1817 ETS SCIENTIA ARTES LIBRARY VERITAS OF THE UNIVERSITY OF MICHIGAN SERLERIBUS Ս. TUE BOR ...A SI QUÆRIS-PENINSULAM AMOENAM CIRCUMSPICE S.30.310.S.O.S.SI MUSEUM OP ZOOLOGY IN MEMORY OF Max MINOR PEET SURGEON AND ORNITHOLOGIST Bird Division Mus. ct Zool, Univ. of Mich: Jz. Shuvale Max M. Peet. Museums Cage 365 1868c V. Cay from die Freiend THE VARIATION OF ANIMALS AND PLANTS UNDER DOMESTICATION. BY CHARLES DARWIN, M.A., F.R.S., &c. AUTHORIZED EDITION, WITH A PREFACE BY PROFESSOR ASA GRAY. IN TWO VOLUMES. VOL. I. With Yllustrations. NEW-YORK: ORANGE JUDD & COMPANY, 2 45 BROADWAY. Entered, according to Act of Congress, in the year 1868, by ORANGE JUDD & COMPANY, In the Clerk's Office of the District Court of the United States for the Southern District of New York. AUTHOR'S PREFACE TO THE AMERICAN EDITION. An edition of this book was reprinted immediately after its first publication, and I thus had the opportu- nity of inserting various corrections and some important additions. These are included in the present American edition, together with some new corrections. It is a great gratification to me that my work should be thought worthy of republication in the United States, which con- tains so large a body of intelligent readers. The details given in the first volume will probably be too numerous and minute for most readers; but they appeared to me worth publishing, as different persons might be interested in different classes of animals and plants; and the facts taken together shew in the clearest manner how largely organic beings vary when subjected to domestication. I venture to call the reader's attention to the chapter on Pangenesis. The view there propounded is simply hypo- thetical, but it has appeared to me, and I have the satis- faction to know that it has likewise thus appeared to some capable judges in England, to be no small gain to seize on a material bond, by which the various forms of reproduction, inheritance, development, etc., can be con- nected together. We thus get rid of such vague terms as spermatic force, the vivification of the ovule, sexual potentiality, and the diffusion of mysterious essences or properties from either parent, or from both, to the child. Whatever may be thought of the conclusions at which I have arrived on various points, I hope that the student will find my work of use, as giving to him a larger body of methodically arranged facts on certain subjects than can be found, as I believe, in any other work. CHARLES DARWIN. Down BROMLEY, KENT, March 28, 1868. ADDITIONS AND CORRECTIONS. PUBLISHERS' NOTE TO THE READER.—The first English edition of this work was taken up at once, and a second called for. In the reprint Mr. Darwin made a number of changes and correc- tions, and sent us the advance sheets containing them. He also has given us a number of manuscript corrections which do not even appear in the latest English reprint. If the reader will mark the passages indicated below, he will have his copy revised up to the author's latest views. These corrections, as well as Mr. Darwin's preface, were received after the book was printed ; and we were obliged, by force of circumstances, to insert both in extra pages. CORRECTIONS TO VOL. I. Page 86, and wherever Sus Indica occurs, read Sus Indicus. Page 104, 16 lines from top. Instead of " It has been found in England associated with the remains of the elephant and rhino- ceros," read “It apparently did not exist in England before the Neolithic period, though a greater age was formerly assigned to it." Page 104, 2d line from bottom. After B. longifrons add, " and according to Mr. Boyd Dawkins is identical with it." Page 104, foot-note 40. Strike out reference to Owen, British Mammalia, and insert “Mr. Boyd Dawkins on the British Fossil Oxen, Journal of the Geol. Soc. Aug. 1867, p. 182." Page 127, 2d line from bottom. For “during the early stone period," read " during the early part of the Neolithic period.” Page 200, foot-note 35. Strike out that part of the note begin- ning "but it is stated," and ending with "than in the female. . Page 223, 12 lines from top. For (Dendrocygna viduata) read (Anas moschata). Page 351, 18 lines from top. After word “strain” insert “ Again, Mr. T. Jenner Wier informs me that a peacock at Blackheath, whilst young, was white, but as it became older it assumed the cha- racter of the black-shouldered variety ; both its parents were com- mon peacocks. Here we have six distinct cases," etc. Page 352, 9 lines from top. For "as it did to Sir R. Heron, to pre- ponderate strongly in favour," read "evidence seems to me to be decisive in favour of the black-shouldered," etc. Page 355, 8 lines from top. For "by naturalists," read “ by some naturalists." Page 475, 19 lines from bottom. Insert, after "no success, Dr. Hildebrand informs me, in a letter dated Jan. 2d, 1868, that he has recently succeeded with the potato. He removed all the eyes from a white, smooth-skinned potato, and all from a red, scaly po- tato, and inserted them reciprocally into each other. From these eyes he raised only two plants; and of the tubers formed by them two were red and scaly at one end, and white and smooth-skinned at the other; the middle part being white with red streaks. Hence the possibility of a graft hybrid may be looked at as established." ADDITIONS AND CORRECTIONS. 11 Mr. Darwin states that this case of Dr. Hildebrand has modified his belief in the possibility of making a graft hybrid.--PUB.] Page 475, 18 lines from bottom. After instance known to me,” insert “(with the exception of the case just given)." Page 476, 13 lines from bottom. Strike out all of the sentence after "above described." Page 480. To foot-note 126 add : " Dr. Hildebrand, of Bonn, in a letter dated Jan. 2, 1868, informs me that he has recently crossed yellow and red maize and obtained the same results as Dr. Sovi, with the important addition, that in one case the axis which sup- ports the seeds was stained of a brownish color ; Dr. Hildebrand also gives me some striking cases with respect to the apple-tree, like those recorded further on. These valuable facts will soon be recorded in the 'Bot. Zeitung.' Page 485. Add to foot-note: "Dr. Bowerbank has given us the following striking case :- A black, hairless Barbary bitch was first impregnated by a mongrel spaniel with long brown hair, and she produced five puppies, three of which were hairless and two cov- ered with short brown hair. The next time she was put to a full black, hairless Barbary dog ; but the mischief had been implanted in the mother, and again about half the litter looked like pure Barbarys, and the other half like the short-haired progeny of the first father." Page 486, 5 lines from bottom. For " There is a considerable but insufficient body of evidence," read " There is sufficient evidence." CORRECTIONS TO VOL. II. Page 25. To the paragraph ending with "operated on," add "since the publication of the first edition of this work, I have re- ceived an account of another instance of the regrowth of a super- numerary digit." Page 32, 5 lines from bottom. For “ 73" insert “ 72." Page 56, 2d paragraph. After "always produced," add "I hear from Mr. Blyth that the hybrids from the canary and goldfinch al- most invariably have streaked feathers on their backs; and this streaking must be derived from the aboriginal wild canary." Page 88, 14 lines from top. For“ (Tadnora Ægyptiuca),” read " (Anser Ægyptiacus)." Page 170, 6 lines from top. After " P. edulis," insert “ In a third instance, however, P. quadrangularis fruited freely, when arti- ficially fertilized with its own pollen.” Page 184, 5 lines from top. Erase all of the sentence after "tur. key," and add "and fowl are kept and bred by various remote tribes." Page 221, 2d line from bottom. Strike out all the sentence after "result," and insert "so the same thing occurs with trimorphic plants, for instance, the mid-styled form of Lythrum salicariu could be illegitimately fertilized with the greatest ease by pollen from the longer stamens of the short-styled form, and yielded many seeds, but the latter form did not yield a single seed when fertilized by the longer stamens of the mid-styled form.' Page 341, 342, and wherever " Lucaze Duthiers” occurs, read " La- caze," and alter the same in the index. iv ADDITIONS AND CORRECTIONS. 22 Page 428, 3d line from bottom. Strike out all of the sentence after "amputation," and insert "how it comes that organic beings identical in every respect are habitually produced by such widely different processes as budding and true seminal generation." Page 431, 11 lines from bottom. After "nature," add "and in the case of Daphnia, Sir J. Lubbock first showed that ova and pseud-ova are identical in structure. Page 431, foot-note 5. For Cecydomyide" read " Cecidomyde." Page 437, paragraph Graft-hybrids. In the 2d line of the paragraph, cut out after Cytisus adami and make it read “ Cytisus adami, it was shown that, after the tissues of two plants," etc. In the sixth line of paragraph, for "are intimately united," read "have become intimately united.” In the Sth line, “it is certain," should read “it is also certain." The closing sentence of the para- graph, “Should it ever be proved," etc., is to be modified to read, The possibility of the production of hybridized buds by the union of two distinctive vegetative tissues is an important fact, as it shows us that sexual and asexual production are essentially the same: for the power," etc. Page 442, bottom line. For "inserted into the eye,” read “inserted into the ear of an ox, lived for eight years, and acquired, according to Prof. Mantegazza, a weight of 396 grammes, and the astonishing length of 24 centimetres, or about 9 English inches; so that the head of the ox appeared to bear three horns." Page 443. For foot-note 22, substitute" Degli innesti animali, etc. Milano, 1865, p. 51, Tab. 3." Page 449, 5th line from top. Strike out the sentence beginning “Nearly similar views," and insert " Views in some respects similar have been propounded, as I find by other authors." Page 453, 3d line from bottom. For * 4,872,000," read “ 6,867, 840. Page 453. Cancel the foot-note 34, as far as the word “Harmer," and insert "Mr. F. Buckland carefully calculated, by weighing, the above number of eggs in a codfish ; see · Land and Water,' 1868, P. 62. In a previous instance he found the number to be 4,872,000." Page 463, 17 lines from top. Strike out the paragraph be- ginning "It was shown," and substitute the following: “As by our hypothesis budding or fission differs from seminal generation only in the manner in which the gemmules are first aggregated, we can understand the possibility of the formation of graft-hybrids, and these graft-hybrids, which combine the character of the two forms of which the tissues have become united, connect in the closest and most interesting manner gemmation and sexual reproduction." Page 518, 16 lines from top. "Anas moschata," add “i., p. 223" Page 522. After “Bowen, Prof.," insert - BOWERBANK, DR., on the effects of a first impregnation, i., p. 485.” Page 530. Dendrocygna viduata, strike out reference to vol. i. Page 539. After After “HILDEBRAND, DR.," insert "on graft hybrids with the potato, i., p. 475. On the influence of the pollen on the mother plant, i., p. 480." Page 550. Under * Owen, Prof. R.," strike out reference to Bos longifrons. Page 562. For " Sus Indica" read “Sus Indicus." PREFACE TO THE AMERICAN EDITION. This work is here reprinted from the English edi- tion, under an arrangement with the author, upon the recommendation of the subscriber. It is a perfect trea- sury of facts relative to domesticated animals and some of the more important cultivated plants; of the princi- ples which govern the production, improvement, and preservation of breeds and races; of the laws of inheri- tance, upon which all origination of improved varieties depends; of the ill effects of breeding in-and-in, neces- sary though this be to the full development and perpetu- ation of a choice race or breed, and of the good effects of an occasional cross, by which, rightly managed, a breed may be invigorated or improved. These and various kindred subjects are discussed scientifically, with rare ability, acuteness, and impartiality, by one who has de- voted most of his life to this class of inquiries, and who discusses them in a way and style equally interesting and instructive to the professional naturalist or phy- siologist and to the general reader. To the intelligent agriculturist and breeder, these volumes will be especi- ally valuable, and it is in the interest of such practical men and amateurs that they are here reprinted. iy PREFACE. The subject is, of course, connected with the theory which has made Mr. Darwin's name so famous; a theory which, extending the application and range of these facts into past ages, regards the present species of plants and animals as older and stronger-marked varie- ties, originated under a natural selection of the sorts best adapted to the circumstances and conditions of each place and time, in a way which may fairly be compared with the development of our domesticated animals and plants under artificial selection and care. It was the study of domesticated races that suggested the theory. Whether that stand or fall, the facts in respect to breeds and races, which are here so faithfully collected and discuss- ed, are none the worse for having served as the basis of ingenious speculations; and they have an interest of their own, irrespective of all such theories, as well as a practical importance which should commend them to general attention. The curious speculations toward the close of the second volume, upon the way in which peculiarities may be supposed to be transmitted from parents to offspring, or from grandparents to a second or later generation and the like, are entirely independent of the Darwinian theory. The English edition being quite beyond the reach of the majority of readers in this country, the publishers of The American Agriculturist have done well in mak- ing these volumes generally accessible. A. GRAY. CAMBRIDGE, MASS., March, 1868. CONTENTS OF VOLUME I. INTRODUCTION · Page 11 CHAPTER I. DOMESTIC DOGS AND CATS. ANCIENT VARIETIES OF THE DOG RESEMBLANCE OF DOMESTIC DOGS IN VARIOUS COUNTRIES TO NATIVE CANINE SPECIES - ANIMALS NOT AC- QUAINTED WITH MAN AT FIRST FEARLESS — DOGS RESEMBLING WOLVES AND JACKALS - HABIT OF BARKING ACQUIRED AND LOST FERAL DOGS -TAN-COLOURED EYE-SPOTS — PERIOD OF GESTATION OFFENSIVE ODOUR FERTILITY OF THE RACES WHEN CROSSED DIFFERENCES IN THE SEV- ERAL RACES IN PART DUE TO DESCENT FROM DISTINCT SPECIES DIF- FERENCES IN THE SKULL AND TEETH - DIFFERENCES IN THE BODY, IN CONSTITUTION FEW IMPORTANT DIFFERENCES HAVE BEEN FIXED BY SELECTION DIRECT ACTION OF CLIMATE — WATER-DOGS WITH PALMATED FEET -HISTORY OF THE CHANGES WHICH CERTAIN ENGLISH RACES OF THE DOG HAVE GRADUALLY UNDERGONE THROUGH SELECTION - EXTINC- TION OF THE LESS IMPROVED SUB-BREEDS. CATS, CROSSED WITH SEVERAL SPECIES — DIFFERENT BREEDS FOUND ONLY IN SEPARATED COUNTRIES - DIRECT EFFECTS OF THE CONDITIONS OF LIFE - FERAL CATS - INDIVIDUAL VARIABILITY .. 27 CHAPTER II. HORSES AND ASSES. HORSE. —DIFFERENCES IN THE BREEDS — INDIVIDUAL VARIABILITY OF - DIRECT EFFECTS OF THE CONDITIONS OF LIFE CAN WITHSTAND NUCH COLD BREEDS MUCH MODIFIED BY SELECTION COLOURS OF THE HORSE DAPPLING DARK STRIPES ON THE SPINE, LEGS, SHOULDERS, AND FOREHEAD — DUN-COLOURED HORSES MOST FREQUENTLY STRIPED STRIPES PROBABLY DUE TO REVERSION TO THE PRIMITIVE STATE OF THE HORSE. ASSES. BREEDS OF — COLOUR OF -LEG- AND SHOULDER- STRIPES —— SHOULDER-STRIPES SOMETIMES ABSENT, SOMETIMES FORKED 66 VI CONTENTS. CHAPTER III. PIGS — CATTLE - SHEEP - GOATS. PIGS BELONG TO TWO DISTINCT TYPES, SUS SCROFA AND INDICA - TORF- SCHWEIN JAPAN PIG FERTILITY OF CROSSED PIGS - CHANGES IN THE SKULL OF THE HIGHLY CULTIVATED RACES CONVERGENCE OF CHARACTER - GESTATION - SOLID-HOOFED SWINE - CURIOUS APPENDA GES TO THE JAWS - DECREASE IN SIZE OF THE TUSKS - YOUNG PIGS LONGI- TUDINALLY STRIPED FERAL PIGS CROSSED BREEDS. CATTLE. -- ZEBU A DISTINCT SPECIES - EUROPEAN CATTLE PROBABLY DE- SCENDED FROM THREE WILD FORMS - ALL THE RACES NOW FERTILE TOGETHER BRITISH PARK CATTLE - ON THE COLOUR OF THE ABO- RIGINAL SPECIES CONSTITUTIONAL DIFFERENCES - SOUTH AFRICAN RACES SOUTH AMERICAN RACES – NIATA CATTLE - ORIGIN OF THE VARIOUS RACES OF CATTLE. SHEEP.- REMARKABLE RACES OF — VARIATIONS ATTACHED TO THE MALE SEX — ADAPTATIONS TO VARIOUS CONDITIONS GESTATION OF - CHANGES IN THE WOOL SEMI-MONSTROUS BREEDS. GOATS. - REMARKABLE VARIATIONS OF .. 85 CHAPTER IV. DOMESTIC RABBITS. DOMESTIC RABBITS DESCENDED FROM THE COMMON WILD RABBIT - - ANCIENT DOMESTICATION ANCIENT SELECTION LARGE LOP-EARED RABBITS - VARIOUS BREEDS FLUCTUATING CHARACTERS ORIGIN OF THE HIMA- LAYAN BREED CURIOUS CASE OF INHERITANCE - FERAL RABBITS IN JAMAICA AND THE FALKLAND ISLANDS - PORTO SANTO FERAL RABBITS OSTEOLOGICAL CHARACTERS SKULL SKULL OF HALF-LOP RABBITS VARIATIONS IN THE SKULL ANALOGOUS TO DIFFERENCES IN DIFFER- ENT SPECIES OF HARES · VERTEBRA STERNUM SCAPULA - EFFECTS OF USE AND DISUSE ON THE PROPORTIONS OF THE LIMBS AND BODY CAPACITY OF THE SKULL AND REDUCED SIZE OF THE BRAIN - SUMMARY ON THE MODIFICATIONS OF DOMESTICATED RABBITS .. .. 130 CHAPTER V. DOMESTIC PIGEONS. ENUMERATION AND DESCRIPTION OF THE SEVERAL BREEDS INDIVIDUAL VARIABILITY — VARIATIONS OF A REMARKABLE NATURE OSTEOLOGICAL CHARACTERS: SKULL, LOWER JAW, NUMBER OF VERTEBRÆ CORRELA- TION OF GROWTH: TONGUE WITH BEAK, EYELIDS AND NOSTRILS WITH CONTENTS. vii WATTLED SKIN – NUMBER OF WING-FEATHERS, AND LENGTH OF WING COLOUR AND DOWN WEBBED AND FEATHERED FEET - ON THE EF- FECTS OF DISUSE-LENGTH OF FEET IN CORRELATION WITH LENGTH OF BEAK —LENGTH OF STERNUM, SCAPULA, AND FURCULA — LENGTH OF WINGS SUMMARY ON THE POINTS OF DIFFERENCE IN THE SEVERAL BREEDS .. 163 CHAPTER VI. PIGEONS-continued. ON THE ABORIGINAL PARENT-STOCK OF THE SEVERAL DOMESTIC RACES - HABITS OF LIFE — WILD RACES OF THE ROCK-PIGEON DOVECOT PIGEONS PROOFS OF THE DESCENT OF THE SEVERAL RACES FROM COLUMBA LIVIA -- FERTILITY OF THE RACES WHEN CROSSED REVERSION TO THE PLUMAGE OF THE WILD ROCK-PIGEON CIRCUMSTANCES FAVOURABLE TO THE FORMATION OF THE RACES ANTIQUITY AND HISTORY OF THE PRINCIPAL RACES - - MANNER OF THEIR FORMATION SELECTION UN- CONSCIOUS SELECTION CARE TAKEN BY FANCIERS IN SELECTING THEIR BIRDS SLIGHTLY DIFFERENT STRAINS GRADUALLY CHANGE INTO WELL- MARKED BREEDS — EXTINCTION OF INTERMEDIATE FORMS — CERTAIN BREEDS REMAIN PERMANENT, WHILST OTHERS CHANGE - SUMMARY .. 221 CHAPTER VII. FOWLS. BRIEF DESCRIPTIONS OF THE CHIEF BREEDS ARGUMENTS IN FAVOUR OF THEIR DESCENT FROM SEVERAL SPECIES - ARGUMENTS IN FAVOUR OF ALL THE BREEDS HAVING DESCENDED FROM GALLUS BANKIVA --- REVER- SION TO THE PARENT-STOCK IN COLOUR - ANALOGOUS VARIATIONS ANCIENT HISTORY OF THE FOWL EXTERNAL DIFFERENCES BETWEEN THE SEVERAL BREEDS - EGGS - CHICKENS SECONDARY SEXUAL CHA- RACTERS WING- AND TAIL- FEATHERS, VOICE, DISPOSITION, ETC. OSTEOLOGICAL DIFFERENCES IN THE SKULL, VERTEBRÆ, ETC. — EF- FECTS OF USE AND DISUSE OF CERTAIN PARTS CORRELATION OF GROWTH .. 273 CHAPTER VIII. DUCKS -- GOOSE - PEACOCK - TURKEY - GUINEA-FOWL- CANARY-BIRD - GOLD-FISH --- HIVE-BEES -- SILK-MOTHS. DUCKS, SEVERAL BREEDS OF — PROGRESS OF DOMESTICATION ---ORIGIN OF, FROM THE COMMON WILD-DUCK DIFFERENCES IN THE DIFFERENT viii CONTENTS. BREEDS – OSTEOLOGICAL DIFFERENCES — EFFECTS OF USE AND DIS- USE ON THE LIMB-BONES. GOOSE, ANCIENTLY DOMESTICATED — LITTLE VARIATION OF+SEBASTAPOL BREED. PEACOCK, ORIGIN OF BLACK-SHOULDERED BREED. TURKEY, BREEDS OF — CROSSED WITH THE UNITED STATES SPECIES EFFECTS OF CLIMATE ON. GUINEA-FOWL, CANARY-BIRD, GOLD-FISH, HIVE-BEES. SILK-MOTHS, SPECIES AND BREEDS OF — ANCIENTLY DOMESTICATED CARE IN THEIR SELECTION DIFFERENCES IN THE DIFFERENT RACES IN THE EGG, CATERPILLAR, AND COCOON STATES — INHERITANCE OF CHARACTERS IMPERFECT WINGS - LOST INSTINCTS — CORRELATED CHA- RACTERS 333 CHAPTER IX. CULTIVATED PLANTS: CEREAL AND CULINARY PLANTS. PRELIMINARY REMARKS ON THE NUMBER AND PARENTAGE OF CUL- TIVATED PLANTS FIRST STEPS IN CULTIVATION GEOGRAPHICAL DIS- TRIBUTION OF CULTIVATED PLANTS. CEREALIA.— DOUBTS ON THE NUMBER OF SPECIES. - WHEAT : VARI- ETIES OF - INDIVIDUAL VARIABILITY - CHANGED HABITS SELECTION ANCIENT HISTORY OF THE VARIETIES. MAIZE: GREAT VARIATION OF DIRECT ACTION OF CLIMATE ON. CULINARY PLANTS.- CABBAGES: VARIETIES OF, IN FOLIAGE AND STEMS, BUT NOT IN OTHER PARTS PARENTAGE OF — OTHER SPECIES OF BRASSICA. - PEAS: AMOUNT OF DIFFERENCE IN THE SEVERAL KINDS, CHIEFLY IN THE PODS AND SEED — SOME VARIETIES CONSTANT, SOME HIGHLY VARIABLE DO NOT INTER CROSS. BEANS. — POTATOES : NUMEROUS VARIETIES OF — DIFFERING LITTLE, EXCEPT IN THE TUBERS CHARACTERS INHERITED 368 CHAPTER X. PLANTS continued — FRUITS - ORNAMENTAL TREES — FLOW- ERS. FRUITS. - GRAPES - VARY IN ODD AND TRIFLING PARTICULARS. MULBERRY. • THE ORANGE GROUP - SINGULAR RESULTS FROM CROSS- ING. PEACH AND NECTARINE BUD-VARIATION - ANALOGOUS VARI- ATION -- - RELATION TO THE ALMOND. APRICOT. - PLUS — VARI- ATION IN THEIR STONES. CHERRIES SINGULAR VARIETIES OF. APPLE. PEAR. - STRAWBERRY INTERBLENDING OF THE ORIGINAL CONTENTS. ix FORMS. - GOOSEBERRY STEADY INCREASE IN SIZE OF THE FRUIT — VARIETIES OF. – WALNUT. - NUT. - CUCURBITACEOUS PLANTS - WONDERFUL VARIATION OF. ORNAMENTAL TREES THEIR VARIATION IN DEGREE AND KIND - ASH-TREE SCOTCH-FIR HAWTHORN. FLOWERS — MULTIPLE ORIGIN OF MANY KINDS - VARIATION IN CON- STITUTIONAL PECULIARITIES - KIND OF VARIATION. · ROSES - SEVE- RAL SPECIES CULTIVATED. PANSY. DAHLIA. HYACINTH, HISTORY AND VARIATION OF 400 CHAPTER XI. ON BUD-VARIATION, AND ON CERTAIN ANOMALOUS MODES OF REPRODUCTION AND VARIATION. BUD-VARIATIONS IN THE PEACH, PLUM, CHERRY, VINE, GOOSEBERRY, CUR- RANT, AND BANANA, AS SHOWN BY THE MODIFIED FRUIT - IN FLOW- ERS: CAMELLIAS, AZALEAS, CHRYSANTHEMUMS, ROSES, ETC. - ON THE RUNNING OF THE COLOUR IN CARNATIONS BUD-VARIATIONS IN LEAVES VARIATIONS BY SUCKERS, TUBERS, AND BULBS — ON THE BREAKING OF TULIPS BUD-VARIATIONS GRADUATE INTO CHANGES CONSEQUENT ON CHANGED CONDITIONS OF LIFE - CYTISUS ADAMI, ITS ORIGIN AND TRANS- FORMATION - ON THE UNION OF TWO DIFFERENT EMBRYOS IN ONE SEED THE TRIFACIAL ORANGE - ON REVERSION BY BUDS IN HY- BRIDS AND MONGRELS ON THE PRODUCTION OF MODIFIED BUDS BY THE GRAFTING OF ONE VARIETY OR SPECIES ON ANOTHER — ON THE DIRECT OR IMMEDIATE ACTION OF FOREIGN POLLEN ON THE MOTHER- PLANT — ON THE EFFECTS IN FEMALE ANIMALS OF A FIRST IMPREGNA- TION ON THE SUBSEQUENT OFFSPRING - CONCLUSION AND SUMMARY 448 LIST OF ILLUSTRATIONS. .. PAGE 1. DUN DEVONSHIRE PONY, WITH SHOULDER, SPINAL, AND LEG STRIPES.. .. 75 2. HEAD OF JAPAN OR MASKED PIG.. .. 90 3. HEAD OF WILD BOAR, AND OF “GOLDEN DAYS," A PIG OF THE YORKSHIRE LARGE BREED 93 4. OLD IRISH PIG, WITH JAW-APPENDAGES 97 5. HALF-LOP RABBIT .. 136 6. SKULL OF WILD RABBIT . 147 7. SKULL OF LARGE LOP-EARED RABBIT 117 . Х CONTENTS. . 148 . .. 168 . .. .. 8. PART OF ZYGOMATIC ARCH, SHOWING THE PROJECTING END OF THE MALAR-BONE, AND THE AUDITORY MEATUS, OF RAB- BITS 148 9. POSTERIOR END OF SKULL, SHOWING THE INTER-PARIETAL BONE OF RABBITS 10. OCCIPITAL FORAMEN OF RABBITS 148 11. SKULL OF HALF-LOP RABBIT 149 12. ATLAS VERTEBRÆ OF RABBITS .. 151 13. THIRD CERVICAL VERTEBRÆ OF RABBITS .. 152 14. DORSAL VERTEBRÆ, FROM SIXTH TO TENTH INCLUSIVE, OF RAB- BITS 153 15. TERMINAL BONE OF STERNUM OF RABBITS 154 16. ACROMION OF SCAPULA OF RABBITS . 154 17. THE ROCK-PIGEON, OR COLUMBA LIVIA 18. ENGLISH POUTER 170 19. ENGLISH CARRIER 174 20. ENGLISH BARB .. . 180 21. ENGLISH FANTAIL . 182 22. AFRICAN OWL .. . 185 23. SHORT-FACED ENGLISH TUMBLER . 188 24. SKULLS OF PIGEONS, VIEWED LATERALLY . 201 25. LOWER JAWS OF PIGEONS, SEEN FROM ABOVE 202 26. SKULL OF RUNT, SEEN FROM ABOVE 203 27. LATERAL VIEW OF JAWS OF PIGEONS 203 28. SCAPULÆ OF PIGEONS. 206 29. FURCULÆ OF PIGEONS .. 206 30. SPANISH FOWL 274 31. HAMBURGI FOWL .. . 277 32. POLISII FOWL .. 279 33. OCCIPITAL FORAMEN OF THE SKULLS OF FOWLS .. 316 34. SKULLS OF FOWLS, VIEWED FROM ABOVE, A LITTLE OBLIQUELY 316 35. LONGITUDINAL SECTIONS OF SKULLS OF FOWLS, VIEWED LAT- ERALLY .. .. . 318 36. SKULL OF HORNED FOWL, VIEWED FROM ABOVE, A LITTLE OBLIQUELY .... .. 320 37. SIXTH CERVICAL VERTEBRÆ OF FOWLS, VIEWED LATERALLY.. 323 38. EXTREMITY OF THE FURCULA OF FOWLS, VIEWED LATERALLY 324 39. SKULLS OF DUCKS, VIEWED LATERALLY, REDUCED TO TWO THIRDS OF THE NATURAL SIZE 340 40. CERVICAL VERTEBRÆ OF DUCKS, OF NATURAL SIZE .. 342 41. PODS OF THE COMMON PEA 395 42. PEACH AND ALMOND STONES, OF NATURAL SIZE, VIEWED EDGE- WAYS .. 406 43. PLUM STONES, OF NATURAL SIZE, VIEWED LATERALLY 416 THE VARIATION OF ANIMALS AND PLANTS UNDER DOMESTICATION. INTRODUCTION. The object of this work is not to describe all the many races of animals which have been domesticated by man, and of the plants which have been cultivated by him; even if I possessed the requisite knowledge, so gigantic an undertaking would be here superfluous. It is my in- tention to give under the head of each species only such facts as I have been able to collect or observe, showing the amount and nature of the changes which animals and plants have undergone whilst under man's dominion, or which bear on the general principles of variation. In one case alone, namely, in that of the domestic pigeon, I will describe fully all the chief races, their history, the amount and nature of their differences, and the probable steps by which they have been formed. I have selected this case, because, as we shall hereafter see, the materials are better than in any other; and one case fully describ- ed will in fact illustrate all others. But I shall also de- scribe domesticated rabbits, fowls, and ducks, with con- siderable.fulness. The subjects discussed in this volume are so connected that it is not a little difficult to decide how they can be 12 INTRODUCTION. best arranged. I have determined in the first part to give, under the heads of the various animals and plants, a large body of facts, some of which may at first appear but little related to our subject, and to devote the latter part, to general discussions. Whenever I have found it necessary to give numerou details, in support of any proposition or conclusion, small type has been used. The reader will, I think, find this plan a convenience, for, if he does not doubt the conclusion or care about the de- tails, he can easily pass them over; yet I may be permit- ted to say that some of the discussions thus printed deserve attention, at least from the professed naturalist. It may be useful to those who have read nothing about Natural Selection, if I here give a brief sketch of the whole subject and of its bearing on the origin of spe- cies. This is the more desirable, as it is impossible in the present work to avoid many allusions to questions which will be fully discussed in future volumes. From a remote period, in all parts of the world, man has subjected many animals and plants to domestication or culture. Man has no power of altering the absolute conditions of life; he cannot change the climate of any country; he adds no new element to the soil; but he can remove an animal or plant from one climate or soil to another, and give it food on which it did not subsist in its natural state. It is an error to speak of man “tam- pering with nature” and causing variability. If organic beings had not possessed an inherent tendency to vary, man could have done nothing. He unintentionally ex- poses his animals and plants to various conditions of life, 1 To any one who has attentively read my Origin of Species' this Introduction will be superfluous. As I stated in that work that I should soon publish the facts on which the conclusions given in it were founded, I here beg permission to remark that the great delay in publish- ing this first work has been caused by continued ill-health. 2 M. Pouchet has recently (Plurality of Races,' Eng. Translat., 1864, p. 83, &c.) insisted that variation under do- mestication throws no light on the natu- ral modification of species. I cannot perceive the force of his arguments, or, to speak more accurately, of his asser- tions to this effect. NATURAL SELECTION. 13 and variability supervenes, which he cannot even prevent or check. Consider the simple case of a plant which has been cultivated during a long time in its native country, and which consequently has not been subjected to any change of climate. It has been protected to a certain extent from the competing roots of plants of other kinds ; it has generally been grown in manured soil, but proba- bly not richer than that of many an alluvial flat; and lastly, it has been exposed to changes in its conditions, being grown sometimes in one district and sometimes in another, in different soils. Under such circumstances, scarcely a plant can be named, though cultivated in the rudest manner, which has not given birth to several va- rieties. It can hardly be maintained that during the many changes which this earth has undergone, and during the natural migrations of plants from one land or island to another, tenanted by different species, that such plants will not often have been subjected to changes in their conditions analogous to those which almost inevi- tably cause cultivated plants to vary. No doubt man selects varying individuals, sows their seeds, and again selects their varying offspring. But the initial variation on which man works, and without which he can do noth- ing, is caused by slight changes in the conditions of life, which must often have occurred under nature. Man, therefore, may be said to have been trying an experiment on a gigantic scale; and it is an experiment which na- ture during the long lapse of time has incessantly tried. Hence it follows that the principles of domestication are important for us. The main result is that organic beings thus treated have varied largely, and the variations have been inherited. This has apparently been one chief cause of the belief long held by some few naturalists that spe- cies in a state of nature undergo change. I shall in this volume treat, as fully as my inaterials permit, the whole subject of variation under domestica- tion. We may thus hope to obtain some light, little 14 INTRODUCTION. though it be, on the causes of variability,ấon the laws which govern it, such as the direct action of climate and food, the effects of use and disuse, and of correlation of growth,—and on the amount of change to which domes- ticated organisms are liable. We shall learn something on the laws of inheritance, on the effects of crossing dif- ferent breeds, and on that sterility which often supervenes when organic beings are removed from their natural con- ditions of life, and likewise when they are too closely interbred. During this investigation we shall see that the principle of Selection is all important. Although man does not cause variability and cannot even prevent it, he can select, preserve, and accumulate the variations given to him by the hand of nature in any way which he chooses; and thus he can certainly produce a great result. Selection may be followed either methodically and inten- tionally, or unconsciously and unintentionally. Man may select and preserve each successive variation, with the distinct intention of improving and altering a breed, in accordance with a preconceived idea ; and by thus adding up variations, often so slight as to be imperceptible by an uneducated eye, he has effected wonderful changes and improvements. It can, also, be clearly shown that man, without any intention or thought of improving the breed, by preserving in each successive generation the indivi- duals which he prizes most, and by destroying the worth- less individuals, slowly, though surely, induces great changes. As the will of man thus comes into play, we can understand how it is that domesticated breeds show adaptation to his wants and pleasures. We can further understand how it is that domestic races of animals and cultivated races of plants often exhibit an abnormal cha- racter, as compared with natural species; for they have been modified not for their own benefit, but for that of man. In a second work I shall discuss the variability of or- ganic beings in a state of nature; namely, the individual NATURAL SELECTION, 15 races. differences presented by animals and plants, and those slightly greater and generally inherited differences which are ranked by naturalists as varieties or geographical We shall see how difficult, or rather how impos- sible it often is, to distinguish between races and sub- species, as the less well-marked forms have sometimes been denominated; and again between sub species and true species. I shall further attempt to show that it is the common and widely ranging, or, as they may be called, the dominant species, which most frequently vary; and that it is the large and flourishing genera which in- clude the greatest number of varying species. Varieties, as we shall see, may justly be called incipient species. But it may be urged, granting that organic beings in a state of nature present some varieties,—that their organi- zation is in some slight degree plastic; granting that many animals and plants have varied greatly under do- mestication, and that man by his power of selection has gone on accumulating such variations until he has made strongly marked and firmly inherited races; granting all this, how, it may be asked, have species arisen in a state of nature? The differences between natural varieties are slight; whereas the differences are considerable between the species of the same genus, and great between the species of distinct genera. How do these lesser differ- ences become augmented into the greater difference? How do varieties, or as I have called them incipient species, become converted into true and well-defined species? How. has each new species been adapted to the surrounding physical conditions, and to the other forms of life on which it in any way depends? We see on every side of us innumerable adaptations and contri- vances, which have justly excited in the mind of every observer the highest admiration. There is, for instance, a fly (Cecidomyia)' which deposits its eggs within the Léon Dufour in 'Annales des Scienc. Nat.' (3rd series, Zoolog.), tom. v. p. 6. 16 INTRODUCTION. stamens of a Scrophularia, and secretes a poison which produces a gall, on which the larva feeds; but there is another insect (Misocampus) which deposits its eggs within the body of the larva within the gall, and is thus nourished by its living prey; so that here a hymenopte- rous insect depends on a dipterous insect, and this de- pends on its power of producing a monstrous growth in a particular organ of a particular plant. So it is, in a more or less plainly marked manner, in thousands and tens of thousands of cases, with the lowest as well as with the highest productions of nature. This problem of the conversion of varieties into species, --that is, the augmentation of the slight differences cha- racteristic of varieties into the greater differences charae- teristic of species and genera, including the admirable adaptations of each being to its complex organic and in- organic conditions of life,—will form the main subject of my second work. We shall therein see that all organic beings, without exception, tend to increase at so high a ratio, that no district, no station, not even the whole sur- face of the land or the whole ocean, would hold the pro- geny of a single pair after a certain number of genera- tions. The inevitable result is an ever-recurrent Strug- gle for Existence. It has truly been said that all nature is at war; the strongest ultimately prevail, the weakest fail; and we well know that myriads of forms have dis- appeared from the face of the earth. If then organic beings in a state of nature vary even in a slight degree, owing to changes in the surrounding conditions, of which we have abundant geological evidence, or from any other cause; if, in the long course of ages, inheritable varia- tions ever arise in any way advantageous to any being under its excessively complex and changing relations of and it would be a strange fact if beneficial varia- tions did never arise, seeing how many have arisen which man has taken advantage of for his own profit or pleasure; if then these contingencies ever occur, and I do not see life; NATURAL SELECTION. 17 how the probability of their occurrence can be doubted, then the severe and often-recurrent struggle for existence will determine that those variations, however slight, which are favourable shall be preserved or selected, and those which are unfavourable shall be destroyed. This preservation, during the battle for life, of varieties which possess any advantage in structure, constitution, or instinct, I have called Natural Selection; and Mr. Herbert Spencer has well expressed the same idea by the Survival of the Fittest. The term "natural selection” is in some respects a bad one, as it seems to imply conscious choice; but this will be disregarded after a little familiar- ity. No one objects to chemists speaking of “elective affinity;” and certainly an acid has no more choice in combining with a base, than the conditions of life have in determining whether or not a new form be selected or preserved. The term is so far a good one as it brings into connection the production of domestic races by man's power of selection, and the natural preservation of varie- ties and species in a state of nature. For brevity sake I sometimes speak of natural selection as an intelligent power ;-in the same way as astronomers speak of the at- traction of gravity as ruling the movements of the planets, or as agriculturists speak of man making domestic races by his power of selection. In the one case, as in the other, selection does nothing without variability, and this de- pends in some manner on the action of the surrounding circumstances on the organism. I have, also, often per- sonified the word Nature; for I have found it difficult to avoid this ambiguity; but I mean by nature only the ag- gregate action and product of many natural laws,--and by laws only the ascertained sequence of events. In the chapter devoted to natural selection I shall show from experiment and from a multitude of facts, that the greatest amount of life can be supported on each spot by great diversification or divergence in the structure and constitution of its inhabitants. We shall, 18 INTRODUCTION. . also, see that the continued production of new forms through natural selection, which implies that each new variety has some advantage over others, almost inevita- bly leads to the extermination of the older and less im- proved forms. These latter are almost necessarily inter- mediate in structure as well as in descent between the last-produced forms and their original parent-species. Now, if we suppose a species to produce two or more varieties, and these in the course of time to produce other varieties, the principle of good being derived from diversification of structure will generally lead to the preservation of the most divergent varieties; thus the lesser differences characteristic of varieties come to be augmented into the greater differences characteristic of species, and, by the extermination of the older inter mediate forms, new species come to be distinctly defined objects. Thus, also, we shall see how it is that organic beings can be classed by what is called a natural method in distinct groups-species under genera, and genera under families. As all the inhabitants of each country may be said, owing to their high rate of reproduction, to be striving to increase in numbers; as each form is related to many other forms in the struggle for life,—for destroy any one and its place will be seized by others; as every part of the organization occasionally varies in some slight de- gree, and as natural selection acts exclusively by the preservation of variations which are advantageous under the excessively complex conditions to which each being is exposed, no limit exists to the number, singularity, and perfection of the contrivances and co-adaptations which may thus be produced. An animal or a plant may thus slowly become related in its structure and habits in the most intricate manner to many other animals and plants, and to the physical conditions of its home. Variations in the organization will in some cases be aided by habit, or by the use and disuse of parts, and they will be gov- NATURAL SELECTION. -19 erned by the direct action of the surrounding physical conditions and by correlation of growth. On the principles here briefly sketched out, there is no innate or necessary tendency in each being to its own advancement in the scale of organization. We are almost compelled to look at the specialization or differentiation of parts or organs for different functions as the best or even sole standard of advancement; for by such division of labour each function of body and mind is better performed. And, as natural selection acts exclusively through the preservation of profitable modifications of structure, and as the conditions of life in each area gen- erally become more and more complex, from the increas- ing number of different forms which inhabit it and from most of these forms acquiring a more and more perfect structure, we may confidently believe, that, on the whole, organization advances. Nevertheless a very simple form fitted for very simple conditions of life might remain for indefinite ages unaltered or unimproved; for what would it profit an infusorial animalcule, for instance, or an intestinal worm, to become highly organized ? Members of a high group might even become, and this apparently has occurred, fitted for simpler conditions of life; and in this case natural selection would tend to simplify or de- grade the organization, for complicated mechanism for simple actions would be useless or even disadvanta- geous. In a second work, after treating of the Variation of organisms in a state of nature, of the Struggle for Exist- ence and the principle of Natural Selection, I shall dis- cuss the difficulties which are opposed to the theory. These difficulties may be classed under the following heads :—the apparent impossibility in some cases of a very simple organ graduating by small steps into a highly perfect organ; the marvellous facts of Instinct; the whole question of Hybridity; and, lastly, the ab- sence, at the present time and in our geological forma- 20 INTRODUCTION. tions, of innumerable links connecting all allied species. Although some of these difficulties are of great weight, we shall see that many of them are explicable on the theory of natural selection, and are otherwise inexplica- ble. In scientific investigations it is permitted to invent any hypothesis, and if it explains various large and independent classes of facts it rises to the rank of a well-grounded theory. The undulations of the ether and even its existence are hypothetical, yet every one now admits the undulatory theory of light. The principle of natural selection may be looked at as a mere hypoth- esis, but rendered in some degree probable by what we positively know of the variability of organic beings in a state of nature,—by what we positively know of the struggle for existence, and the consequent almost inev- itable preservation of favourable variations,—and from the analogical formation of domestic races. Now this hypothesis may be tested, and this seems to me the only fair and legitimate manner of considering the whole question, -by trying whether it explains several large and independent classes of facts; such as the geological succession of organic beings, their distribution in past and present times, and their mutual affinities and homol- ogies. If the principle of natural selection does explain these and other large bodies of facts, it ought to be re- ceived. On the ordinary view of each species having been independently created, we gain no scientific expla- nation of any one of these facts. We can only say that it has so pleased the Creator to command that the past and present inhabitants of the world should appear in a certain order and in certain areas; that He has impressed on them the most extraordinary resemblances, and has classed them in groups subordinate to groups. But by such statements we gain no new knowledge; we do not connect together facts and laws; we explain nothing. NATURAL SELECTION. 21 In a third work I shall try the principle of natural se- lection by seeing how far it will give a fair explanation of the several classes of facts just alluded to. It was the consideration of these facts which first led me to take up the present subject. When I visited, during the voyage of H.M.S. Beagle, the Galapagos Archipelago, situated in the Pacific Ocean about 500 miles from the shore of South America, I found myself surrounded by peculiar species of birds, reptiles, and plants, existing nowhere else in the world. Yet they nearly all bore an American stamp. In the song of the mocking-thrush, in the harsh cry of the carrion-hawk, in the great candlestick-like opuntias, I clearly perceived the neighbourhood of Ame- rica, though the islands were separated by so many miles of ocean from the mainland, and differed much from it in their geological constitution and climate. Still more surprising was the fact that most of the inhabitants of each separate island in this small archipelago were speci- fically different, though most closely related to each other. The archipelago, with its innumerable craters and bare streams of lava, appeared to be of recent origin; and thus I fancied myself brought near to the very act of creation. I often asked myself how these many peculiar animals and plants had been produced: the simplest answer seemed to be that the inhabitants of the several islands had descended from each other, undergoing modification in the course of their descent; and that all the inhabitants of the archipelago had descended from those of the near- est land, namely America, whence colonists would na- turally have been derived. But it long remained to me an inexplicable problem how the necessary degree of modification could have been effected, and it would have thus remained for ever, had I not studied domestic productions, and thus acquired a just idea of the power of selection. As soon as I had fully realized this idea, I saw, on reading Malthus on Population, that Natural Selection was the inevitable result of the rapid increase 22 INTRODUCTION. of all organic beings; for I was prepared to appreciate the struggle for existence by having long studied the habits of animals. Before visiting the Galapagos I had collected many animals whilst travelling from north to south on both sides of America, and everywhere, under conditions of life as different as it is possible to conceive, American forms were met with-species replacing species of the same peculiar genera. Thus it was when the Cordilleras were ascended, or the thick tropical forests penetrated, or the fresh waters of America searched. Subsequently I visited other countries, which in all the conditions of life were incomparably more like to parts of South America, than the different parts of that continent were to each other; yet in these countries, as in Australia or Southern Africa, the traveller cannot fail to be struck with the en- tire difference of their productions. Again the reflection was forced on me that community of descent from the early inhabitants or colonists of South America would alone explain the wide prevalence of American types of structure throughout that immense area. To exhume with one's own hands the bones of extinct and gigantic quadrupeds brings the whole question of the succession of species vividly before one's mind; and I had found in South America great pieces of tessellated armour exactly like, but on a magnificent scale, that corering the pigmy armadillo; I had found great teeth like those of the living sloth, and bones like those of the cavy. An analogous succession of allied forms had been previously observed in Australia. Here then we see the prevalence, as if by descent, in time as in space, of the same types in the same areas; and in neither case does the similarity of the conditions by any means seem sufficient to account for the similarity of the forms of life. It is notorious that the fossil remains of closely consecutive formations are closely allied in structure, and we can at once understand the fact if they are likewise closely allied by descent. NATURAL SELECTION. 23 The succession of the many distinct species of the same genus throughout the long series of geological formations seems to have been unbroken or continuous. New spe- cies come in gradually one by one. Ancient and extinct forms of life often show combined or intermediate cha- racters, like the words of a dead language with respect to its several offshoots or living tongues. All these and other such facts seemed to me to point to descent with modification as the method of production of new groups of species. The innumerable past and present inhabitants of the world are connected together by the most singular and complex affinities, and can be classed in groups under groups, in the same manner as varieties can be classed under species and sub-varieties under varieties, but with much higher grades of difference. It will be seen in my third work that these complex affinities and the rules for classification receive a rational explanation on the prin- ciple of descent, together with modifications acquired through natural selection, entailing divergence of cha- racter and the extinction of intermediate forms. How inexplicable is the similar pattern of the hand of a man, the foot of a dog, the wing of a bat, the flipper of a seal, on the doctrine of independent acts of creation ! how simply explained on the principle of the natural selection of successive slight variations in the diverging descendants from a single progenitor ! So it is, if we look to the structure of an individual animal or plant, when we see the fore and hind limbs, the skull and ver- tebræ, the jaws and legs of a crab, the petals, stamens, and pistils of a flower, built on the same type or pat- tern. During the many changes to which in the course of time all organic beings have been subjected, certain organs or parts have occasionally become at first of lit- tle use and ultimately superfluous; and the retention of such parts in a rudimentary and utterly useless condition can, on the descent-theory, be simply understood. On 24 INTRODUCTION. the principle of modifications being inherited at the same age in the child, at which each successive varia- tion first appeared in the parent, we shall see why rudi- mentary parts and organs are generally well developed in the individual at a very early age. On the same prin- ciple of inheritance at corresponding ages, and on the principle of variations not generally supervening at a very early period of embryonic growth (and both these principles can be shown to be probable from direct evi- dence), that most wonderful fact in the whole round of natural history, namely, the similarity of members of the same great class in their embryonic condition,-the em- bryo, for instance, of a mammal, bird, reptile, and fish being barely distinguishable, — becomes simply intelli- gible. It is the consideration and explanation of such facts as these which has convinced me that the theory of descent with modification by means of natural selection is in the main true. These facts have as yet received no explana- tion on the theory of independent Creations; they can- not be grouped together under one point of view, but each has to be considered as an ultimate fact. As the first origin of life on this earth, as well as the continued life of each individual, is at present quite beyond the scope of science, I do not wish to lay much stress on the greater simplicity of the view of a few forms, or of only one form, having been originally created, instead of innumerable miraculous creations having been necessary at innumerable periods; though this more simple view accords well with Maupertuis's philosophical axiom“ of least action." In considering how far the theory of natural selection may be extended, -that is, in determining from how many progenitors the inhabitants of the world have descended, we may conelude that at least all the members of the same class have descended from a sin- gle ancestor. A number of organic beings are included NATURAL SELECTION. 25 in the same class, because they present, independently of their habits of life, the same fundamental type of structure, and because they graduate into each other. Moreover, members of the same class can in most cases be shown to be closely alike at an early embryonic age. These facts can be explained on the belief of their de- scent from a common form ; therefore it may be safely admitted that all the members of the same class have descended from one progenitor. But as the members of quite distinct classes have something in common in structure and much in common in constitution, analogy and the simplicity of the view would lead us one step further, and to infer as probable that all living creatures have descended from a single prototype. I hope that the reader will pause before coming to any final and hostile conclusion on the theory of natural se- lection. It is the facts and views to be hereafter given which have convinced me of the truth of the theory. The reader may consult my Origin of Species,' for a general sketch of the whole subject; but in that work he has to take many statements on trust. In consider- ing the theory of natural selection, he will assuredly meet with weighty difficulties, but these difficulties re- late chiefly to subjects—such as the degree of perfec- tion of the geological record, the means of distribution, the possibility of transitions in organs, &c.-on which we are confessedly ignorant; nor do we know how ig- norant we are. If we are much more ignorant than is generally supposed, most of these difficulties wholly dis- appear. Let the reader reflect on the difficulty of look- ing at whole classes of facts from a new point of view. Let him observe how slowly, but surely, the noble views of Lyell on the gradual changes now in progress on the earth's surface have been accepted as sufficient to ac- count for all that we see in its past history. The pre- sent action of natural selection may seem more or less probable; but I believe in the truth of the theory, be- 2. 26 INTRODUCTION. cause it collects under one point of view, and gives a rational explanation of, many apparently independent classes of facts. 4 In treating the several subjects in- cluded in the present and succeeding works I have continually been led to ask for information from many zoolo- gists, botanists, geologists, breeders of animals, and horticulturists, and I have invariably received from them the most generous assistance. Without such aid I could have effected little. I have re- peatedly applied for information and specimens to foreigners, and to British merchants and officers of the Govern- ment residing in distant lands, and, with the rarest exceptions, I have re- ceived prompt, open-handed, and valu- able assistance. I cannot express too strongly my obligations to the many persons who have assisted me, and who, I am convinced, would be equal- ly willing to assist others in any scien- tific investigation, CHAP. I. 27 DOGS: THEIR PARENTAGE. CHAPTER I. DOMESTIC DOGS AND CATS ANCIENT VARIETIES OF THE DOG - RESEMBLANCE OF DOMESTIC DOGS IN VARIOUS COUNTRIES TO NATIVE CANINE SPECIES -- ANI- MALS NOT ACQUAINTED WITH MAN AT FIRST FEARLESS — DOGS RESEMBLING WOLVES AND JACKALS -HABIT OF BARKING AC- QUIRED AND LOST — FERAL DOGS — TAN-COLOURED EYE-SPOTS - PERIOD OF GESTATION - OFFENSIVE ODOUR – FERTILITY OF THE RACES WHEN CROSSED DIFFERENCES IN THE SEVERAL RACES IN PART DUE TO DESCENT FROM DISTINCT SPECIES -- DIFFERENCES IN THE SKULL AND TEETH DIFFERENCES IN THE BODY, IN CON- STITUTION - FEW IMPORTANT DIFFERENCES HAVE BEEN FIXED BY SELECTION - DIRECT ACTION OF CLIMATE - WATER-DOGS WITH PALMATED FEET HISTORY OF THE CHANGES WHICH CERTAIN ENGLISH RACES OF THE DOG HAVE GRADUALLY UNDERGONE THROUGH SELECTION - EXTINCTION OF THE LESS IMPROVED SUB- BREEDS. CATS, CROSSED WITH SEVERAL SPECIES -- DIFFERENT BREEDS FOUND ONLY IN SEPARATED COUNTRIES DIRECT EFFECTS OF THE CONDITIONS OF LIFE - FERAL CATS — INDIVIDUAL VARIA BILITY, The first and chief point of interest in this chapter is, whether the numerous domesticated varieties of the dog have descended from a single wild species, or from several. Some authors believe that all have descended from the wolf, or from the jackal, or from an unknown and extinct species. Others again believe, and this of late has been the favourite tenet, that they have descended from several species, extinct and recent, more or less commingled to- gether. We shall probably never be able to as 28 CHAP. I. DOGS. their origin with certainty. Paleontology' does not throw much light on the question, owing, on the one hand, to the close similarity of the skulls of extinct as well as living wolves and jackals, and owing on the other hand to the great dissimilarity of the skulls of the several breeds of the domestic dogs. It seems, however, that remains have been found in the later tertiary deposits more like those of a large dog than of a wolf, which favours the belief of De Blainville that our dogs are the descendants of a single extinct species. On the other hand, some authors go so far as to assert that every chief domestic breed must have had its wild prototype. This latter view is extremely improbable; it allows nothing for variation; it passes over the almost monstrous charac- ter of some of the breeds; and it almost necessarily as- sumes, that a large number of species have become extinct since man domesticated the dog; whereas we plainly see that the members of the dog-family are extirpated by human agency with much difficulty; even so recently as 1710 the wolf existed in so small an island as Ireland. The reasons which have led various authors to infer that our dogs have descended from more than one wild species are as follows. Firstly, the great difference be- 1 Owen, British Fossil Mammals,' p. 129 to 133. Pictet's Traité de Pal.,' 1853, tom. i. p. 202. De Blainville, in his Ostéographie, Canidæ,' p. 142, has largely discussed the whole subject and concludes that the extinct parent of all domesticated dogs came nearest to the wolf in organization, and to the jackal in habits. 2 Pallas, I believe, originated this doc- trine in Act. Acad. St. Petersburgh,' 1780, Part ii. Ehrenberg has advocated it, as may be seen in De Blainville's Ostéographie,' p. 79. It has been carried to an extreme extent by Col. Hamilton Smith in the Naturalist Library,' vol. ix. and x. Mr. W. C. Martin adopts it in his excellent History of the Dog,' 1815; as does Dr. Morton, as well as Nott and Gliddon, in the United States. Prof. Low, in his 'Domesticated Animals,' 1845, P. 666, comes to this same conclusion. No one has argued on this side with more clearness and force than the late James Wilson, of Edinburgh, in various papers read before the Highland Agricultural and Wernerian Societies. Isidor Geof- froy St. Hilaire (Hist. Nat. Gén.,' 1860, tom. iii. p. 107), though he believes that most dogs have descended from the jack- al, yet inclines to the belief that some are descended from the wolf. Prof. Gervais (Hist. Nat. Mamm.,'1855, tom. ii. p. 69), referring to the view that all the domestic races are the modified descendants of a species, after a long discussion, says, "Cette opinion est, suivant nous du moins, la moins probable." CHAP. I. 29 THEIR PARENTAGE. tween the several breeds; but this will appear of com- paratively little weight, after we shall have seen how great are the differences between the several races of various domesticated animals which certainly have de- scended from a single parent-form. Secondly, the more important fact that, at the most anciently known histori- cal periods, several breeds of the dog existed, very unlike each other, and closely resembling or identical with breeds still alive. We will briefly run back through the historical records. The materials are remarkably deficient between the four- teenth century and the Roman classical period. At this earlier period various breeds, namely hounds, house-dogs, lapdogs, &c., existed; but as Dr. Walther has remarked it is impossible to recognise the greater number with any certainty. Youatt, however, gives a drawing of a beau- tiful sculpture of two greyhound puppies from the Villa of Antoninus. On an Assyrian monument, about 640 B.C., an enormous mastiff is figured ; and according to Sir H. Rawlinson (as I was informed at the British Museum), similar dogs are still imported into this same country. I have looked through the magnificent works of Lepsius and Rosellini, and on the monuments from the fourth to the twelfth dynasties (i.e. from about 3400 B.C. to 2100 B.C.) several varieties of the dog are represented; most of them are allied to greyhounds; at the later of these periods a dog resembling a hound is figured, with droop- ing ears, but with a longer back and more pointed head 3 Berjeau, The Varieties of the Dog; in old Sculptures and Pictures, 1863. Der Hund,' von Dr. F. L. Walther, s. 48, Giessen, 1817: this author seems care- fully to have studied all classical works on the subject. See also 'Volz, Beiträge zur Kulturgeschichte,' Leipzig, 1852, s. 115. Youаtt on the Dog,' 1815, p. 6. A very full history is given by De Blainville in his Ostéographie, Canidae. 4 I have seen drawings of this dog from the tomb of the son of Esar Had- don, and clay models in the British Mu- seum. Nott and Gliddon, in their Types of Mankind,' 1854, p. 393, give a copy of these drawings. This dog has been called a Thibetan mastiff, but Mr. H. A. Oldfield, who is familiar with the so-called Thibet mastiff, and has examin- ed the drawings in the British Museum, informs me that he considers them dif- ferent. 30 CHAP. I. DOGS. than in our hounds. There is, also, a turnspit, with short and crooked legs, closely resembling the existing variety; but this kind of monstrosity is so common with various animals, as with the ancon sheep, and even, according to Rengger, with jaguars in Paraguay, that it would be rash to look at the monumental animal as the parent of all our turnspits: Colonel Sykes also has described an Indian Pariah dog as presenting the same monstrous character. The most ancient dog represented on the Egyptian mo- numents is one of the most singular; it resembles a grey- hound, but has long pointed ears and a short curled tail: a closely allied variety still exists in Northern Africa ; for Mr. E. Vernon Harcourt states that the Arab boar-hound is “an eccentric hieroglyphic animal, such as Cheops once hunted with, somewhat resembling the rough Scotch deer-hound; their tails are curled tight round on their backs, and their ears stick out at right angles." With this most ancient variety a pariah-like dog coexisted. We thus see that, at a period between four and five thousand years ago, various breeds, viz. pariah dogs, greyhounds, common hounds, mastiffs, house-dogs, lap- dogs, and turnspits, existed, more or less closely resem- bling our present breeds. But there is not sufficient evidence that any of these ancient dogs belonged to the same idential sub-varieties with our present dogs. As long as man was believed to have existed on this earth only about 6000 years, this fact of the great diversity of the breeds at so early a period was an argument of much weight that they had proceeded from several wild sources, for there would not have been sufficient time for 5 Proc. Zoolog. Soc.,' July 12th, 1831. & Sporting in Algeria,' p. 51. 7 Berjeau gives fac-similes of the Egyptian drawings. Mr. C. L. Martin, in his "History of the Dog,' 1845, copies several figures from the Egyptian monu- ments, and speaks with much confidence with respect to their identity with still living dogs. Messrs. Nott and Gliddon (Types of Mankind,' 1854, p. 388) give still more numerous figures. Mr. Glid- don asserts that a curl-tailed greyhound, like that represented on the most ancient monuments, is common in Borneo; but the Rajah, Sir J. Brooke, informs me that no such dog exists there. CHAP. I. 31 THEIR PARENTAGE. their divergence and modification. But now that we know, from the discovery of flint tools embedded with the remains of extinct animals in districts which have since undergone great geographical changes, that man has existed for an incomparably longer period, and bear- ing in mind that the most barbarous nations possess do- mestic dogs, the argument from insufficient time falls away greatly in value. Long before the period of any historical record the dog was domesticated in Europe. In the Danish Middens of the Neolithic or Newer Stone period, bones of a canine animal are imbedded, and Steenstrup ingeniously argues that these belonged to a domestic dog; for a very large proportion of the bones of birds preserved in the refuse, consists of long bones, which it was found on trial dogs cannot devour. This ancient dog was succeeded in Den- mark during the Bronze period by a larger kind, present- ing certain differences, and this again during the Iron period, by a still larger kind. In Switzerland we hear from Prof. Rütimeyer, that during the Neolithic period a domesticated dog of middle size existed, which in its skull was about equally remote from the wolf and jackal, and partook of the characters of our hounds and setters or spaniels (Jagdhund und Wachtelhund). Rütimeyer insists strongly on the constancy of form during a very long period of time of this the most ancient known dog. During the Bronze period a larger dog appeared, and this closely resembled in its jaw a dog of the same age in Denmark. Remains of two notably distinct varieties of the dog were found by Schmerling in a cave; 10 but their age cannot be positively determined. The existence of a single race, remarkably constant in 8 These, and the following facts on the Danish remains, are taken from M. Mor- lot's most interesting memoir in 'Soc. Vaudoise des Sc. Nat.,' tom. vi., 1860, pp. 281, 299, 320. 9 Die Fauna der Pfahlbauten,' 1861, s. 117, 162. 10 De Blainville, Ostéographie, Ca- nidæ, 32 CHAP. I. DOGS. form during the whole Neolithic period, is an interesting fact in contrast with what we see of the changes which the races underwent during the period of the successive Egyptian monuments, and in contrast with our existing dogs. The character of this animal during the Neolithic period, as given by Rütimeyer, supports De Blainville's view that our varieties have descended from an unknown and extinct form. But we should not forget that we know nothing with respect to the antiquity of man in the warmer parts of the world. The succession of the differ- ent kinds of dogs in Switzerland and Denmark is thought to be due to the immigration of conquering tribes bring- ing with them their dogs; and this view accords with the belief that different wild canine animals were domes- ticated in different regions. Independently of the im- migration of new races of man, we know from the wide- spread presence of bronze, composed of an alloy of tin, how much commerce there must have been throughout Europe at an extremely remote period, and dogs would then probably have been bartered. At the present time, amongst the savages of the interior of Guiana, the Taruma Indians are considered the best trainers of dogs, and pos- sess a large breed, which they barter at a high price with other tribes. 11 The main argument in favour of the several breeds of the dog being the descendants of distinct wild stocks, is their resemblance in various countries to distinct species still existing there. It must, however, be admitted that the comparison between the wild and domesticated ani- mal has been made but in few cases with sufficient exact- ness. Before entering on details, it will be well to show that there is no a priori difficulty in the belief that seve- ral canine species have been domesticated; for there is much difficulty in this respect with some other domestic 11 Sir R. Schomburgk has given me information on this head. See also Journal of R. Geograph. Soc.,' vol. xiii., 1843, p. 65. CHAP. I. 33 THEIR PARENTAGE. quadrupeds and birds. Members of the dog family in- habit nearly the whole world; and several species agree pretty closely in habits and structure with our several domesticated dogs. Mr. Galton has shown how fond savages are of keeping and taming animals of all kinds. Social animals are the most easily subjugated by man, and several species of Canidæ hunt in packs. It deserves notice, as bearing on other animals as well as on the dog, that at an extremely ancient period, when man first en- tered any country, the animals living there would have felt no instinctive or inherited fear of him, and would consequently have been tamed far more easily than at present. For instance, when the Falkland Islands were first visited by man, the large wolf-like dog (Canis an- tarcticus) fearlessly came to meet Byron's sailors, who, mistaking this ignorant curiosity for ferocity, ran into the water to avoid them: even recently a man, by hold- ing a piece of meat in one hand and a knife in the other, could sometimes stick them at night. On an island in the Sea of Aral, when first discovered by Butakoff, the saigak antelopes, which are “generally very timid and watchful, did not fly from us, but on the contrary looked at us with a sort of curiosity." So, again, on the shores of the Mau- ritius, the manatee was not at first in the least afraid of man, and thus it has been in several quarters of the world with seals and the morse. I have elsewhere shown 13 how slowly the native birds of several islands have acquired and inherited a salutary dread of man: at the Galapagos Archipelago I pushed with the muzzle of my gun hawks from a branch, and held out a pitcher of water for other birds to alight on and drink. Quadrupeds and birds which have seldom been disturbed by man, dread him 12 Domestication of Animals :' Eth- nological Soc., Dec. 22nd, 1863. 13 Journal of Researches,' &c., 1845, p. 393. With respect to Canis antarc. ticus, see p. 193. For the case of the an- telope, see 'Journal Royal Geograph. Soc.,' vol. xxiii. p. 94. 34 CHAP, I. DOGS. no more than do our English birds the cows or horses grazing in the fields. It is a more important consideration that several canine species evince (as will be shown in a future chapter) no strong repugnance or inability to breed under confinement; and the incapacity to breed under confinement is one of the commonest bars to domestication. Lastly, savages set the highest value, as we shall see in the chapter on Selection, on dogs: even half-tamed animals are highly useful to them : the Indians of North America cross their half-wild dogs with wolves, and thus render them even wilder than before, but bolder: the savages of Guiana catch and partially tame and use the whelps of two wild species of Canis, as do the savages of Australia those of the wild Dingo. Mr. Philip King informs me that he once trained a wild Dingo puppy to drive cattle, and found it very useful. From these several considerations we see that there is no difficulty in believing that man might have domesticated various canine species in differ- ent countries. It would indeed have been a strange fact if one species alone had been domesticated throughout the world. We will now enter into details. The accurate and sa- gacious Richardson says, " The resemblance between the Northern American wolves (Canis lupus, var. occidenta- lis) and the domestic dogs of the Indians is so great that the size and strength of the wolf seems to be the only difference. I have more than once mistaken a band of wolves for the dogs of a party of Indians; and the howl of the animals of both species is prolonged so exactly in the same key that even the practised ear of the Indian fails at times to discriminate them.” He adds that the more northern Esquimaux dogs are not only extremely like the grey wolves of the Arctic circle in form and colour, but also nearly equal them in size. Dr. Kane has often seen in his teams of sledge-dogs the oblique eye (a character on which some naturalists lay great stress), the CHAP. I. 35 THEIR PARENTAGE. drooping tail, and scared look of the wolf. In disposi- tion the Esquimaux dogs differ little from wolves, and, according to Dr. Hayes, they are capable of no attach- ment to man, and are so savage, that when hungry they will attack even their masters. According to Kane they readily become feral. Their affinity is so close with wolves that they frequently cross with them, and the Indians take the whelps of wolves" to improve the breed of their dogs.” The half-bred wolves sometimes (Lamare- Picquot) cannot be tamed, “though this case is rare;" but they do not become thoroughly well broken in till the second or third generation. These facts show that there can be but little, if any, sterility between the Esquimaux dog and the wolf, for otherwise they would not be used to improve the breed. As Dr. Hayes says of these dogs, “reclaimed wolves they doubtless are." 14 North America is inhabited by a second kind of wolf, the prairie-wolf (Canis latrans), which is now looked at by all naturalists as specifically distinct from the com- mon wolf; and is, according to Mr. J. K. Lord, in some respects intermediate in habits between a wolf and a fox. Sir J. Richardson, after describing the Hare Indian dog, which differs in many respects from the Esquimaux dog, says, “It bears the same relation to the prairie wolf that the Esquimaux dog does to the great grey wolf." He could, in fact, detect no marked difference between them; and Messrs. Nott and Gliddon give additional details showing their close resemblance. The dogs derived from 14 The authorities for the foregoing statements are as follow :-Richardson, in Fauna Boreali-Americana,' 1829, pp. 64, 75; Dr. Kane, 'Arctic Explorations, 1856, vol. i. pp. 398, 455; Dr. Hayes, Arctic Boat Journey,' 1860, p. 167. Franklin's Narrative,' vol. i. p. 269, gives the case of three whelps of a black wolf being carried away by the Indians. Parry, Richardson, and others, give ac- counts of wolves and dogs naturally cross- ing in the eastern parts of North Ameri- ca. Seeman, in his 'Voyage of H.M.S. Herald,' 1853, vol. ii. p. 26, says the wolf is often caught by the Esquimaux for the purpose of crossing with their dogs, and thus adding to their size and strength. M. Lamare-Picquot, in 'Bull, de la. Soc. d'Acclimat.,' tom. vii., 1860, p. 148, gives a good account of the half-bred Esqui- maux dogs. 36 CHAP. I. DOGS. the above two aboriginal sources cross together and with the wild wolves, at least with the C. occidentalis, and with European dogs. In Florida, according to Bartram, the black wolf-dog of the Indians differs in nothing from the wolves of that country except in barking. 16 Turning to the southern parts of the New World, Columbus found two kinds of dogs in the West Indies; and Fernandez 16 describes three in Mexico: some of these native dogs were dumb—that is, did not bark. In Guiana it has been known since the time of Buffon that the natives cross their dogs with an aboriginal species, apparently the Canis cancrivorus. Sir R. Schomburgk, who has so carefully explored these regions, writes to me, “I have been repeatedly told by the Arawaak Indians, who reside near the coast, that they cross their dogs with a wild species to improve the breed, and individual dogs have been shown to me which certainly resembled the C. cancrivorus much more than the common breed. It is but seldom that the Indians keep the C. cancrivorus for domestic purposes, nor is the Ai, another species of wild dog, and which I consider to be identical with the Dusi- cyon silvestris of H. Smith, now much used by the Are- cunas for the purpose of hunting. The dogs of the Taruma Indians are quite distinct, and resemble Buffon's St. Domingo greyhound.” It thus appears that the natives of Guiana have partially domesticated two abo- riginal species, and still cross their dogs with them; these two species belong to a quite different type from the North American and European wolves. A careful observ- 15 Fauna Boreali-Americana, 1829, pp. 73, 78, 80. Nott and Gliddon, 'Types of Mankind,' p. 383. The naturalist and traveller Bartram is quoted by Hamilton Smith, in 'Nat. Hist. Lib.,' vol. x. p. 156. A Mexican domestic dog seems also to resemble a wild dog of the same country; but this may be the prairie-wolf. Another capable judge, Mr. J. K. Lord (The Naturalist in Vancouver Island,' 1866, vol. ii. p. 218), says that the Indian dog of the Spokans, near the Rocky Moun- tains, " is beyond all question nothing more than a tamed Cayote or prairie- wolf," or Canis latrans. 16 I quote this from Mr. R. Hill's excellent account of the Alco or domes- tic dog of Mexico, in Gosse's Natural- ist's Sojourn in Jamaica,' 1851, p. 329. CHAP. I. 37 THEIR PARENTAGE. er, Rengger," gives reasons for believing that a hairless dog was domesticated when America was first visited by Europeans: some of these dogs in Paraguay are still dumb, and Tschudi 18 states that they suffer from cold in the Cordillera. This naked dog is, however, quite distinct from that found preserved in the ancient Peruvian burial- places, and described by Tschudi, under the name of Canis Ingo, as withstanding cold well and as barking. It is not known whether these two distinct kinds of dog are the descendants of native species, and it might be argued that when man first migrated into America he brought with him from the Asiatic continent dogs which had not learned to bark; but this view does not seem probable, as the natives along the line of their march from the north reclaimed, as we have seen, at least two N. Ameri- can species of Canidæ. Turning to the Old World, some European dogs closely resemble the wolf; thus the shepherd dog of the plains of Hungary is white or reddish brown, has a sharp nose, short, erect ears, shaggy coat, and bushy tail, and so much resembles a wolf that Mr. Paget, who gives this descrip- tion, says he has known a Hungarian mistake a wolf for one of his own dogs. Jeitteles, also, remarks on the close similarity of the Hungarian dog and wolf. Shep- herd dogs in Italy must anciently have closely resembled wolves, for Columella (vii. 12) advises that white dogs be kept, adding, "pastor album probat, ne pro lupo canem feriat.” Several accounts have been given of dogs and wolves crossing naturally; and Pliny asserts that the Gauls tied their female dogs in the woods that they might cross with wolves. The European wolf differs 17 Naturgeschichte der Saeugethiere von Paraguay,' 1830, s. 151. 18 Quoted in Humboldt's 'Aspects of Nature,' Eng. transl., vol. i. p. 108. 19 Paget's Travels in Hungary and Transylvania,' vol. i. p. 501. Jeitteles, Fauna Hungariæ Superioris,' 1962, s. 13. See Pliny, Hist. of the World' (Eng. transl.), 8th book, ch. xl., about the Gauls crossing their dogs. See also Aristotle, Hist. Animal.' lib. viii. c. 28. For good evidence about wolves and dogs naturally crossing near the 38 CHAP. I. DOGS. slightly from that of North America, and has been ranked by many naturalists as a distinct species. The common wolf of India is also by some esteemed as a third species, and here again we find a marked resemblance between the pariah dogs of certain districts of India and the Indian wolf.20 With respect to Jackals, Isidore Geoffroy Saint Hi- laire 21 says that not one constant difference can be pointed out between their structure and that of the smaller races of dogs. They agree closely in habits: jackals, when tamed and called by their master, wag their tails, crouch, and throw themselves on their backs; they smell at the tails of dogs, and void their urine sideways. A number of excellent naturalists, from the time of Güldenstädt to that of Ehrenberg, Hemprich, and Cretzschmar, have expressed themselves in the strongest terms with respect to the resemblance of the half-domestic dogs of Asia and Egypt to jackals. M. Nordmann, for instance, says, “Les chiens d’Awhasie ressemblent étonnamment à des chacals.” Ehrenberg 2 asserts that the domestic dogs of Lower Egypt, and certain mummied dogs, have for their wild type a species of wolf (C. lupaster) of the country; whereas the domestic dogs of Nubia and certain other mummied dogs have the closest relation to a wild species of the same country, viz. C. sabbar, which is only a form of the common jackal. Pallas asserts that jackals and dogs sometimes naturally cross in the East; and a case is Pyrenees, see M. Mauduyt, 'Du Loup et de ses Races,' Poitiers, 1851 ; also Pallas, in Acta Acad. St. Petersburgh,' 1780, part ii. p. 94. 20 I give this on excellent authority, namely, Mr. Blyth (under the signature of Zoophilus), in the 'Indian Sporting Review,' Oct. 1856, p. 134. Mr. Blyth states that he was struck with the resemblance between a brush-tailed race of pariah-dogs, north-west of Cawn pore, and the Indian wolf. He gives corro- borative evidence with respect to the dogs of the valley of the Nerbudda. 21 For numerous and interesting de- tails on the resemblance of dogs and jackals, see Isid. Geoffroy St. Hilaire, * Hist. Nat. Gén.,' 1860, tom. iii. p. 101. See also Hist. Nat. des Mammifères, par Prof. Gervais, 1855, tom. ii. p. 60. 22 Güldenstädt, 'Nov. Comment. Acad. Petrop.,' tom. xx., pro anno 1775, p. 449. 23 Quoted by De Blainville in his Ostéographie, Canidæ,' pp. 79, 98. CHAP. I. 39 THEIR PARENTAGE. on record in Algeria. The greater number of naturalists divide the jackals of Asia and Africa into several species, but some few rank them all as one. I may add that the domestic dogs on the coast of Gui- nea are foxlike animals, and are dumb. On the east coast of Africa, between lat. 4° and 6° south, and about ten days' journey in the interior, a semi-domestic dog, as the Rev. S. Erhardt informs me, is kept, which the na- tives assert is derived from a similar wild animal. Lich- tenstein 26 says that the dogs of the Bosjemans present a striking resemblance even in colour (excepting the black stripe down the back) with the C. mesomelas of South Africa. Mr. E. Layard informs me that he has seen a Caffre dog which closely resembled an Esquimaux dog. In Australia the Dingo is both domesticated and wild; though this animal may have been introduced aboriginally by man, yet it must be considered as almost an endemic form, for its remains have been found in a similar state of preservation and associated with extinct mammals, so that its introduction must have been ancient.27 From this resemblance in several countries of the half- domesticated dogs to the wild species still living there, ---from the facility with which they can often be crossed together,-from even half-tamed animals being so much valued by savages,-and from the other circumstances previously remarked on which favour their domestication, it is highly probable that the domestic dogs of the world have descended from two good species of wolf (viz. C. lupus and C. latrans), and from two or three other doubt- 24 See Pallas, in . Act. Acad. St. Pe- tersburgh,' 1780, part ii. p. 91. For Algeria, see Isid. Geoffroy St. Hilaire, Hist. Nat. Gén.,' tom. iii. p. 177. In both countries it is the male jackal which pairs with female domestic dogs. 25 John Barbut's 'Description of the Coast of Guinea in 1746.' 26 Travels in South Africa,' vol. ii. p. 272. 27 Selwyn, Geology of Victoria ; 'Jour- nal of Geolog. Soc.,' vol. xiv., 1855, p. 536, and vol. xvi., 1860, p. 148; and Prof. M'Coy, in 'Annals and Mag. of Nat. Hist.' (3rd series), vol. ix., 1862, p. 147. The Dingo differs from the dogs of the central Polynesian islands. Dieffenbach remarks ('Travels,' vol. ii. p. 45) that the native New Zealand dog also differs from the Dingo. 40 CHAP. I. DOGS. 28 ful species of wolves (namely, the European, Indian, and North African forms); from at least one or two South American canine species; from several races or species of the jackal; and perhaps from one or more extinct spe- cies. Those authors who attribute great influence to the action of climate by itself may thus account for the re- semblance of the domesticated dogs and native animals in the same countries; but I know of no facts supporting the belief in so powerful an action of climate. It cannot be objected to the view of several canine species having been anciently domesticated, that these animals are tamed with difficulty: facts have been already given on this head, but I may add that the young of the Canus primævus of India were tamed by Mr. Hodgson, and became as sensible to caresses, and manifested as much intelligence, as any sporting dog of the same age. There is not much difference, as we have already shown and shall immediately further see, in habits between the domestic dogs of the North American Indians and the wolves of that country, or between the Eastern pariah dogs and jackals, or between the dogs which have run wild in various countries and the several natural species of the family. The habit of barking, however, which is almost universal with domesticated dogs, and which does not characterise a single natural species of the family, seems an exception; but this habit is soon lost and soon reacquired. The case of the wild dogs on the island of Juan Fernandez having become dumb has often been quoted, and there is reason to believe 2' that the dumb- ness ensued in the course of thirty-three years; on the other hand, dogs taken from this island by Ulloa slowly reacquired the habit of barking. The Mackenzie-river 28 Proceedings Zoolog. Soc.,'1833, p. - History Nat. Mamm.,' tom. ii. p. 61. 112. See, also, on the taming of the With respect to the aguara of Paraguay, common wolf, L. Lloyd, Scandinavian see Rengger's work. Adventures,' vol. i. p. 460, 1854. With 29 Roulin, in 'Mém. présent. par di- respect to the jackal, see Prof. Gervais, vers Savans,' tom, vi. p. 341. CHAP. I. 41 THEIR PARENTAGE. dogs, of the Canis latrans type, when brought to Eng- land, never learned to bark properly; but one born in the Zoological Gardens 50 made his voice sound as loud- ly as any other dog of the same age and size.” Accord- ing to Professor Nillson, a wolf-whelp reared by a bitch barks. I. Geoffroy Saint Hilaire exhibited a jackal which barked with the same tone as any common dog. An interesting account has been given by Mr. G. Clarke 33 of some dogs run wild on Juan de Nova, in the Indian Ocean; "they had entirely lost the faculty of barking; they had no inclination for the company of other dogs, nor did they acquire their voice," during a captivity of several months. On the island they “congregate in vast packs, and catch sea-birds with as much address as foxes could display.” The feral dogs of La Plata have not become dumb; they are of large size, hunt single or in packs, and burrow holes for their young. In these ha- bits the feral dogs of La Plata resemble wolves and jackals; both of which hunt either singly or in packs, and burrow holes. These feral dogs have not become uniform in colour on Juan Fernandez, Juan de Nova, or La Plata.36 In Cuba the feral dogs are described by Poeppig as nearly all mouse-coloured, with short ears and light-blue eyes. In St. Domingo, Col. Ham. Smith says that the feral dogs are very large, like greyhounds, of a uniform pale blue-ash, with small ears, and large light- brown eyes. Even the wild Dingo, though so anciently 37 32 30 Martin, History of the Dog,' p. 14. 31 Quoted by L. Lloyd in 'Field Sports of North of Europe,' vol. i. p. 387. Quatrefages, Soc. d'Acclimat.,' May 11th, 1863, p. 7. Discours, Exposition des Races Ca- nines,' 1865, p. 3. 35 With respect to wolves burrowing holes, see Richardson, 'Fauna Boreali- Americana,' p. 64; and Bechstein, Na- turgesch. Deutchlands,' b. i. s. 617. 33 Annals and Mag. of Nat. Hist.,' vol. xv., 1845, p. 140. 34 Azara, Voyages dans l'Amér. Mé- rid.,' tom. i. p. 381 ; his account is fully confirmed by Rengger. Quatrefages gives an account of a bitch brought from Jerusalem to France which bur- rowed a hole and littered in it. See 36 See Poeppig, 'Reise in Chile,' b.i. s. 290; Mr. G. Clarke, as above; and Rengger, s. 155. 37 Dogs, Nat. Library,' vol. x. p. 121: an endemic South American dog seems also to have become feral in this island. See Gosse's Jamaica,' p. 340. 42 CHAP. I. DOGS. naturalised in Australia,“ varies considerably in colour," as I am informed by Mr. P. P. King: a half-bred Dingo reared in England 38 showed signs of wishing to bur- l'OW. From the several foregoing facts we see that reversion in the feral state gives no indication of the colour or size of the aboriginal parent-species. One fact, however, with respect to the colouring of domestic dogs, I at one time hoped might have thrown some light on their origin; and it is worth giving, as showing how colouring follows laws, even in so anciently and thoroughly domesticated an animal as the dog. Black dogs with tan-coloured feet, whatever breed they may belong to, almost invariably have a tan coloured spot on the upper and inner corners of each eye, and their lips are generally thus coloured. I have seen only two exceptions to this rule, namely, in a spaniel and terrier. Dogs of a light-brown colour often have a lighter, yellowish-brown spot over the eyes ; sometimes the spot is white, and in a mongrel terrier the spot was black. Mr. Waring kindly examined for me a stud of fifteen grey- hounds in Suffolk: eleven of them were black, or black and white, or brindled, and these had no eye-spots; but three were red and one slaty-blue, and these four had dark-coloured spots over their eyes. Although the spots thus sometimes differ in colour, they strongly tend to be tan-coloured ; this is proved by my having seen four spaniels, a setter, two Yorkshire shepherd dogs, a large mon- grel, and some fox-hounds, coloured black and white, with not a trace of tan-colour, excepting the spots over the eyes, and some- times a little on the feet. These latter cases, and many others, show plainly that the colour of the feet and the eye-spots are in some way correlated. I have noticed; in various breeds, every gra- dation, from the whole face being tan-coloured, to a complete ring round the eyes, to a minute spot over the inner and upper corners. The spots occur in various sub-breeds of terriers and spaniels; in setters; in hounds of various kinds, including the turnspit-like German badger-hound ; in shepherd dogs; in a mongrel, of which neither parent had the spots; in one pure bulldog, though the spots were in this case almost white; and in greyhounds - but true black- and-tan greyhounds are excessively rare; nevertheless I have been assured by Mr. Warwick, that one ran at the Caledonian Champion meeting of April, 1860, and was marked precisely like a black- and-tan terrier.” Mr. Swinhoe at my request looked at the dogs 38 Low, 'Domesticated Animals,' p. 650. CHAP. I. 43 THEIR PARENTAGE. in China, at Amoy, and he soon noticed a brown dog with yellow spots over the eyes. Colonel H. Smith 39 figures the magnificent black mastiff of Thibet with a tan-coloured stripe over the eyes, feet, and chaps; and what is more singular, he figures the Alco, or native domestic dog of Mexico, as black and white, with narrow tan-coloured rings round the eyes; at the Exhibition of dogs in London, May, 1863, a so-called forest-dog from North-West Mexico was shown, which had pale tan-coloured spots over the eyes. The occurrence of these tan-coloured spots in dogs of such extremely different breeds, living in various parts of the world, makes the fact highly remarkable. We shall hereafter see, especially in the chapter on Pigeons, that coloured marks are strongly inherited, and that they often aid us in discovering the primitive forms of our domestic races. Hence, if any wild canine species had distinctly exhibited the tan-coloured spots over the eyes, it might have been argued that this was the pa- rent-form of nearly all our domestic races. But after looking at many coloured plates, and through the whole collection of skins in the British Museum, I can find no species thus marked. It is no doubt possible that some extinct species was thus coloured. On the other hand, in looking at the various species, there seems to be a tol- erably plain correlation between tan-coloured legs and face; and less frequently between black legs and a black face; and this gene- ral rule of colouring explains to a certain extent the above-given cases of correlation between the eye-spots and the colour of the feet. Moreover, some jackals and foxes have a trace of a white ring round their eyes, as in 0. mesomelas, C. aureus, and (judging from Colonel Ham. Smith's drawing) in C. alopex and C. thaleb. Other species have a trace of a black line over the corners of the eyes, as in C. variega- tus, cinereo-variegatus, and fulvus, and the wild Dingo. Hence I am inclined to conclude that a tendency for tan-coloured spots to ap- pear over the eyes in the various breeds of dogs, is analogous to the case observed by Desmarest, namely, that when any white appears on a dog the tip of the tail is always white," de manière à rappeler la tache terminale de même couleur, qui caractérise la plupart des Canidés sauvages." 40 It has been objected that our domestic dogs cannot be descended from wolves or jackals, because their periods of gestation are different. The supposed difference rests 89 The Naturalist Library,' Dogs, vol. x. pp. 4, 19. 40 Quoted by Prof. Gervais Hist. Nat. Mamm.,' tom. ii. p. 66. 44 CHAP. I. DOGS. on statements made by Buffon, Gilibert, Bechstein, and others; but these are now known to be erroneous; and the period is found to agree in the wolf, jackal, and dog, as closely as could be expected, for it is often in some de- gree variable." Tessier, who has closely attended to this subject, allows a difference of four days in the gestation of the dog. The Rev. W. D. Fox has given me three carefully recorded cases of retrievers, in which the bitch was put only once to the dog; and not counting this day, but counting that of parturition, the periods were fifty- ninė, sixty-two, and sixty-seven days. The average pe- riod is sixty-three days; but Bellingeri states that this holds good only with large dogs; and that for small races it is from sixty to sixty-three days; Mr. Eyton of Eyton, who has had much experience with dogs, also informs me that the time is apt to be longer with large than with small dogs. F. Cuvier has objected that the jackal would not have been domesticated on account of its offensive smell; but savages are not sensitive in this respect. The degree of odour, also, differs in the different kinds of jackal; 42 and Colonel H. Smith makes a sectional division of the group with one character dependent on not being offensive. On the other hand, dogs—for instance, rough and smooth ter- riers---differ much in this respect; and M. Godron states that the hairless so-called Turkish dog is more odoriferous 41 J. Hunter shows that the long pe- riod of seventy-three days given by Buf- fon is easily explained by the bitch hav- ing received the dog many times during a period of sixteen days ("Phil, Trans- act.,' 1787, p. 253). Hunter found that the gestation of a mongrel from wolf and dog ("Phil. Transact.,' 1789, p. 160) ap- parently was sixty-three days, for she received the dog more than once. The period of a mongrel dog and jackal was fifty-nine days. Fred. Cuvier found the period of gestation of the wolf to be ("Dict. Class d'Hist. Nat.,' tom. iv. p. 8) two months and a few days, which agrees with the dog. Isid. G. St. Hilaire, who has discussed the whole subject, and from whom I quote Bellingeri, states (Hist. Nat. Gén.,' tom. iii. p. 112) that in the Jardin des Plantes the period of the jackal has been found to be from sixty to sixty-three days, exactly as with the dog. 42 See Isid. Geoffroy St. Hilaire, 'Hist. Nat. Gén.,' tom. iii. p. 112, on the odour of jackals. Col. Ham. Smith, in 'Nat. Hist. Lib.,' vol. x. p. 289. CHAP. I. 45 THEIR PARENTAGE. than other dogs. Isidore Geoffroy * gave to a dog the same odour as that from a jackal by feeding it on raw flesh. The belief that our dogs are descended from wolves, jackals, South American Canidæ, and other species sug- gests a far more important difficulty. These animals in their undomesticated state, judging from a widely-spread analogy, would have been in some degree sterile if inter- crossed ; and such sterility will be admitted as almost cer- tain by all those who believe that the lessened fertility of crossed forms is an infallible criterion of specific distinct- ness. Anyhow these animals keep distinct in the countries which they inhabit in common. On the other hand, all domestic dogs, which are here supposed to be descended from several distinct species, are, as far as is known, mu- tually fertile together. But, as Broca has well remarked, the fertility of successive generations of mongrel dogs has never been scrutinised with that care which is thought indispensable when species are crossed. The few facts leading to the conclusion that the sexual feelings and re- productive powers differ in the several races of the dog when crossed are (passing over mere size as rendering pro- pagation difficult) as follows: the Mexican Alco 45 appa- rently dislikes dogs of other kinds, but this perhaps is not strictly a sexual feeling; the hairless endemic deg of Par- aguay, according to Rengger, mixes less with the Euro- pean races than these do with each other; the Spitz-dog in Germany is said to receive the fox more readily than do other breeds; and Dr. Hodgkin states that a female Dingo in England attracted the male wild foxes. If these latter statements can be trusted, they prove some degree 48 Quoted by Quatrefages in Bull. Soc. d'Acclimat.,' May 11th, 1863. 14 Journal de la Physiologie,' tom. ii. guay,' s. 153. With respect to Spitz dogs, see Bechstein's Naturgesch. Deutschlands,' 1801, b. i. s. 638. With respect to Dr. Hodgkin's statement made before Brit. Assoc., see "The Zoologist, vol. iv., for 1845-46, p. 1097. p. 355. 45 See Mr. R. Hill's excellent account of this breed in Gosse's 'Jamaica,' p. 838; Rengger's 'Saeugethiere von Para- 46 CAAP. I. DOGS. of sexual difference in the breeds of the dog. But the fact remains that our domestic dogs, differing so widely as they do in external structure, are far more fertile together than we have reason to believe their supposed wild parents would have been. Pallas assumes 46 that a long course of domestication eliminates that sterility which the parent- species would have exhibited if only lately captured ; no distinct facts are recorded in support of this hypothesis ; but the evidence seems to me so strong (independently of the evidence derived from other domesticated animals) in favour of our domestic dogs having descended from seve- ral wild stocks, that I am led to admit the truth of this hypothesis. There is another and closely allied difficulty consequent on the doctrine of the descent of our domestic dogs from several wild species, namely, that they do not stem to be perfectly fertile with their supposed parents. But the experiment has not been quite fairly tried; the Hungarian dog, for instance, which in external appearance so closely resembles the European wolf, ought to be crossed with this wolf; and the pariah-dogs of India with Indian wolves and jackals; and so in other cases. That the sterility is very slight between certain dogs and wolves and other Canidæ is shown by savages taking the trouble to cross them. Buffon got four successive generations from the wolf and dog, and the mongrels were perfectly fertile together. 47 But more lately M. Flourens states positively as the result of his numerous experiments that hybrids from the wolf and dog, crossed inter se, become sterile at the third generation, and those from the jackal and dog at the fourth generation.48 But these animals were closely confined; and many wild animals, as we 46 Acta Acad. St. Petersburgh,' 1780, part ii. pp. 84, 100. 47 M. Broca has shown (Journal de Physiologie,' tom. ii. p. 353) that Buffon's experiments have been often misrepre- sented. Broca has collected (pp. 390-395) many facts on the fertility of crossed dogs, wolves, and jackals. 48 De la Longévité Humaine,' par M. Flourens, 1855, p. 143. Mr. Blyth says (Indian Sporting Review,' vol. ii. p. 137) that he has seen in India several hybrids CHAP. I. 47 THEIR PARENTAGE. shall see in a future chapter, are rendered by confinement in some degree or even utterly sterile. The Dingo, which breeds freely in Australia with our imported dogs, would not breed though repeatedly crossed in the Jardin des Plantes. 49 Some hounds from Central Africa, brought home by Major Denham, never bred in the Tower of Lon- don; and a similar tendency to sterility might be trans- mitted to the hybrid offspring of a wild animal. Moreover, it appears that in M. Flourens' experiments the hybrids were closely bred in and in for three or four generations; but this circumstance, although it would almost certainly increase the tendency to sterility, would hardly account for the final result, even though aided by close confine- ment, unless there had been some original tendency to lessened fertility. Several years ago I saw confined in the Zoological Gardens of London a female hybrid from an English dog and jackal, which even in this the first gene- ration was so sterile that, as I was assured by her keeper, she did not fully exhibit her proper periods; but this case, from the numerous instances of fertile hybrids from these two animals, was certainly exceptional. In almost all ex- periments on the crossing of animals there are so many causes of doubt, that it is extremely difficult to come to any positive conclusion. It would, however, appear, that those who believe that our dogs are descended from several species will have not only to admit that their offspring after a long course of domestication generally lose all tendency to sterility when crossed together; but that between certain breeds of dogs and some of their supposed aboriginal parents a certain degree of sterility has been retained or possibly even acquired. from the pariah-dog and jackal; and be- tween one of these hybrids and a terrier. The experiments of Hunter on the jackal are well known. See also Isid. Geoffroy St. Hilaire, Hist. Nat. Gén.,' tom. iii. p. 217, who speaks of the hybrid offspring of the jackal as perfectly fertile for three generations. 49 On authority of F. Cuvier, quoted in Bronn's Geschichte der Natur, ' B. ii. s. 164. 50 W. C. L. Martin, History of the Dog,' 1845, p. 203. Mr. Philip P. King, after ample opportunities of observation, informs me that the Dingo and European dogs often cross in Australia. 48 CHAP. L. DOGS. Notwithstanding the difficulties in regard to fertility given in the last two paragraphs, when we reflect on the inherent improbability of man having domesticated throughout the world one single species alone of so widely distributed, so easily tamed, and so useful a group as the Canidæ; when we reflect on the extreme antiquity of the different breeds; and especially when we reflect on the close similarity, both in external struc- ture and habits, between the domestic dogs of various countries and the wild species still inhabiting these same countries, the balance of evidence is strongly in favour of the multiple origin of our dogs. Differences between the several Breeds of the Dog.-If the several breeds have descended from several wild stocks, their difference can obviously in part be explained by that of their parent-species. For instance, the form of the greyhound may be partly accounted for by descent from some such animal as the slim Abyssinian Canis si- mensis, with its elongated muzzle; that of the larger dogs from the larger wolves, and the smaller and slighter dogs from jackals: and thus perhaps we may account for certain constitutional and climatal differences. But it would be a great error to suppose that there has not been in addition a large amount of variation. The inter- crossing of the several aboriginal wild stocks, and of the subsequently formed races, has probably increased the total number of breeds, and, as we shall presently see, has greatly modified some of them. But we cannot ex- plain by crossing the origin of such extreme forms as thoroughbred greyhounds, bloodhounds, bulldogs, Blen- heim spaniels, terriers, pugs, &c., unless we believe that forms equally or more strongly characterised in these different respects once existed in nature. But hardly any 61 Rüppel, 'Neue Wirbelthiere von fine animal in the British Museum Abyssinien,' 1835-40 ; Mammif.' s. 39. 52 Even Pallas admits this: see Act pl. xiv. There is a specimen of this Acad. St. Petersburgh,' 1780, p. 93. CHAP. I. 49 DIFFERENCES OF BREEDS. one has been bold enough to suppose that such unnatural form:s ever did or could exist in a wild state. When compared with all known members of the family of Ca- nidæ they betray a distinct and abnormal origin. No instance is on record of such dogs as bloodhounds, spaniels, true greyhounds having been kept by savages: they are the product of long-continued civilization. The number of breeds and sub-breeds of the dog is great : Youatt, for instance, describes twelve kinds of greyhounds. I will not at tempt to enumerate or describe the varieties, for we cannot discri- minate how much of their difference is due to variation, and how much to descent from different aboriginal stocks. But it may be worth while briefly to mention some points. Commencing with the skull, Cuvier has admitted 63 that in form the differences are "plus fortes que celles d'aucunes espèces sauvages d'un même genre na- turel.” The proportions of the different bones; the curvature of the lower jaw, the position of the condyles with respect to the plane of the teeth (on which F. Cuvier founded his classification), and in mastiffs the shape of its posterior branch; the shape of the zygoma- tic arch, and of the temporal fossæ; the position of the occiput-all vary considerably. The dog has properly six pairs of molar teeth in the upper jaw, and seven in the lower; but several naturalists have seen not rarely an additional pair in the upper jaw ; 55 and Pro- fessor Gervais says that there are dogs" qui ont sept paires de dents supérieures et huit inférieures." De Blainville 56 has given full par- ticulars on the frequency of these deviations in the number of the teeth, and has shown that it is not always the same tooth which is supernumerary. In short-muzzled races, according to H. Müller, 57 the molar teeth stand obliquely, whilst in long-muzzled races they are placed longitudinally, with open spaces between them. The naked, so-called Egyptian or Turkish dog is extremely deficient in its teeth, _sometimes having none except one molar on each side; 53 Quoted by I. Geoffroy, Hist. Nat. Gén.,' tom. iii. p. 453. 54 F. Cuvier, in 'Annales du Muséum,' tom. xviii. p. 337; Godron, De l'Espèce, tom, i. p. 342; and Col. Ham. Smith, in Naturalist's Library,' vol. ix. p. 101. 56 Isid. Geoffroy Saint Hilaire, Hist. des Anomalies,' 1832, tom. i. p. 660. Gervais, Hist. Nat. des Mammifères, tom. ii., 1855, p. 66. De Blainville, ("Os- téographie, Canidæ,' p.137) has also seen an extra molar on both sides. 56 Ostéographie, Canidæ,' p. 137. 57 Würzburger, 'Medecin. Zeitschrift, 1860, B. i. s. 265. 58 Mr. Yarrell, in Proc. Zoolog. Soc.,' Oct. 8th, 1833. Mr. Waterhouse showed me a skull of one of these dogs, which had only a single molar on each side and some imperfect incisors. 3 50 CHAP. I. DOGS. but this, though characteristic of the breed, must be considered as a monstrosity. M. Girard,59 who seems to have attended closely to the subject, says that the period of the appearance of the permanent teeth differs in different dogs, being earlier in large dogs; thus the mastiff assumes its adult teeth in four or five months, whilst in the spaniel the period is sometimes more than seven or eight months. With respect to minor differences little need be said. Isidore Geoffroy has shown 60 that in size some dogs are six times as long (the tail being excluded) as others; and that the height relatively to the length of the body varies from between one to two, and one to nearly four. In the Scotch deer-hound there is a striking and remarkable difference in the size of the male and female.61 Every one knows how the ears vary in size in different breeds, and with their great development their muscles become atrophied. Certain breeds of dogs are described as having a deep furrow between the nostrils and lips. The caudal vertebræ, according to F. Cuvier, on whose authority the two last statements rest, vary in number; and the tail in shepherd dogs is almost absent. The mammæ vary from seven to ten in number: Daubenton, having examined twenty-one dogs, found eight with five mamme on each side; eight with four on each side; and the others with an unequal number on the two sides.62 Dogs have properly five toes in front and four behind, but a fifth toe is often added ; and F. Cuvier states that, when a fifth toe is present, a fourth cuneiform bone is developed ; and, in this case, sometimes the great cuneiform bone is raised, and gives on its inner side a large articular surface to the astragalus; so that even the relative connection of the bones, the most constant of all cha- racters, varies. These modifications, however, in the feet of dogs are not important, because they ought to be ranked, as De Blain- ville has shown,63 as monstrosities. Nevertheless they are interest- ing from being correlated with the size of the body, for they occur much more frequently with mastiffs and other large breeds than with small dogs. Closely allied varieties, however, sometimes differ in this respect; thus Mr. Hodgson states that the black-and-tan Lassa variety of the Thibet mastiff has the fifth digit, whilst the Mustang sub-variety is not thus characterised. The extent to 59 Quoted in The Veterinary,' Lon- don, vol. viii. p. 415. 60 Hist. Nat. Général,' tom. iii. p. 448. 61 W. Scrope, 'Art of Deer-Stalking,' 63 De Blainville, Ostéographie Cani- dæ,' p. 134. F. Cuvier, Annales du Muséum,' tom. xviii. p. 342. In regard to mastiffs, see Col. Ham. Smith, Nat. Lib.,' vol. x. p. 218. For the Thibet mas- tiff, see Mr. Hodgson in Journal of As. Soc. of Bengal,' vol. i., 1832, p. 342. p. 354. 62 Quoted by Col. Ham. Smith in 'Na- uralist's Library,' vol. x, p. 79. CHAP. I. 51 DIFFERENCES OF BREEDS. which the skin is developed between the toes varies much; but we shall return to this point. The degree to which the various breeds differ in the perfection of their senses, dispositions, and inherited habits is notorious to every one. The breeds present some consti- tutional differences: the pulse, says Youatt, 64 varies materially according to the breed, as well as to the size of the animal.” Dif- ferent breeds of dogs are subject in different degrees to various dis- eases. They certainly become adapted to different climates under which they have long existed. It is notorious that most of our best European breeds deteriorate in India. The Rev. R Everest 66 be- lieves that no one has succeeded in keeping the Newfoundland dog long alive in India; so it is, according to Lichtenstein,67 even at the Cape of Good Hope. "The Thibet mastiff degenerates on the plains of India, and can live only on the mountains.68 Lloyd "' asserts that our bloodhounds and bulldogs have been tried, and cannot withstand the cold of the northern European forests. Seeing in how many characters the races of the dog differ from each other, and remembering Cuvier's admis- sion that their skulls differ more than do those of the species of genus, and bearing in mind how closely the bones of wolves, jackals, foxes, and other Canidæ agree, it is remarkable that we meet with the statement, repeated over and over again, that the races of the dog differ in no important characters. A highly competent judge, Prof. Gervais, º admits, “ si l'on prenait sans contrôle les altérations dont chacun de ces organes est susceptible, on pourrait croire qu'il y a entre les chiens domestiques des différences plus grandes que celles qui séparent ailleurs les espèces, quelquefois même les genres.” Some of the differences above enumerated any natural na. 64 The Dog,' 1845, p. 156. With re- spect to diseases, Youatt asserts (p. 167) that the Italian greyhound is strongly subject" to polypi in the matrix or vagi- The spaniel and pug (p. 182) are most liable to bronchocele. The liability to distemper (p. 232) is extremely differ- ent in different breeds On the distem- per, see also Col. Hutchinson on 'Dog Breaking,' 1850, p. 279. 65 See Youаtt on the Dog, p. 15; "The Veterinary,' London, vol. xi. p. 235. 68 6Journal of As. Soc. of Bengal,' vol. iii. p. 19. 67 Travels,' vol. ii. p. 15. 68 Hodgson, in 'Journal of As. Soc. of Bengal,' vol. i. p. 342. 69 Field Sports of the North of Eu- rope,' vol. ii. p. 165. 70 Hist. Nat. des Mammif.,'1855, tom: ii. pp. 66, 67. 52 CHAP. I. DOGS. are in one respect of comparatively little value, for they are not characteristic of distinct breeds: no one pretends that such is the case with the additional molar teeth or with the number of mammæ ; the additional digit is generally present with mastiffs, and some of the more important dif- ferences in the skull and lower jaw are more or less cha- racteristic of various breeds. But we must not forget that the predominant power of selection has not been applied in any of these cases; we have variability in important parts, but the differences have not been fixed by selection. Man cares for the form and fleetness of his greyhounds, for the size of his mastiffs, for the strength of the jaw in his bulldogs, &c.; but he cares nothing about the num- ber of their molar teeth or mammæ or digits; nor do we know that differences in these organs are correlated with, or owe their development to differences in other parts of the body about which man does care. Those who have attended to the subject of selection will admit that, na- ture having given variability, man, if he so chose, could fix five toes to the hinder feet of certain breeds of dogs, as certainly as to the feet of his Dorking-fowls: he could probably fix, but with much more difficulty, an addition- al pair of molar teeth in either jaw, in the same way as he has given additional horns to certain breeds of sheep; if he wished to produce a toothless breed of dogs, having the so-called Turkish dog with its imperfect teeth to work on, he could probably do so, for he has succeeded in mak- ing hornless breeds of cattle and sheep. With respect to the precise causes and steps by which the several races of dogs have come to differ so greatly from each other, we are, as in most other cases, profound- ly ignorant. We may attribute part of the difference in external form and constitution to inheritance from dis- tinct wild stocks, that is to changes effected under nature before domestication. We must attribute something to the crossing of the several domestic and natural races. I shall, however, soon recur to the crossing of races. We CHAP. I. 53 MEANS OF MODIFICATION. have already seen how often savages cross their dogs with wild native species; and Pennant gives a curious account" of the manner in which Fochabers, in Scotland, was stocked with a multitude of curs of a most wolf- ish aspect” from a single hybrid-wolf brought into that district. It would appear that climate to a certain extent di- rectly modifies the forms of dogs. We have lately seen that several of our English breeds cannot live in India, and it is positively asserted that when bred there for a few generations they degenerate not only in their men- tal faculties, but in form. Captain Williamson," who carefully attended to this subject, states that "hounds are the most rapid in their decline;"" "greyhounds and pointers, also, rapidly decline." But spaniels, after eight or nine generations, and without a cross from Europe, are as good as their ancestors. Dr. Falconer informs me that bulldogs, which have been known, when first brought into the country, to pin down even an elephant by its trunk, not only fall off after two or three generations in pluck and ferocity, but lose the under-hung character of their lower jaws; their muzzles become finer and their bodies lighter. English dogs imported into India are so valuable that probably due care has been taken to pre- vent their crossing with native dogs ; so that the de- terioration cannot be thus accounted for. The Rev. R. Everest informs me that he obtained a pair of setters, born in India, which perfectly resembled their Scotch parents: he raised several litters from them in Delhi, taking the most stringent precautions to prevent a cross, but he never succeeded, though this was only the second generation in India, in obtaining a single young dog like its parents in size or make; their nostrils were more con- tracted, their noses more pointed, their size inferior, and 71 History of Quadrupeds,' 1793, vol. 1. p. 238. 72 Oriental Field Sports,' quoted by Youatt, The Dog,' p. 15. 54 CHAP. I. DOGS. their limbs more slender. This remarkable tendency to rapid deterioration in European dogs subjected to the climate of India, may perhaps partly be accounted for by the tendency to reversion to a primordial condition which many animals exhibit, as we shall see in a future chapter, when exposed to new conditions of life. Some of the peculiarities characteristic of the several breeds of the dog have probably arisen suddenly, and, though strictly inherited, may be called monstrosities; for instance, the shape of the legs and body in the turn- spit of Europe and India ; the shape of the head and the under-hanging jaw in the bull and pug-dog, so alike in this one respect and so unlike in all others. A peculiarity suddenly arising, and therefore in one sense deserving to be called a monstrosity, may, however, be increased and fixed by man's selection. We can hardly doubt that long-continued training, as with the greyhound in cours- ing hares, as with water-dogs in swimming—and the want of exercise, in the case of lap-dogs-must have pro- duced some direct effect on their structure and instincts. But we shall immediately see that the most potent cause of change has probably been the selection, both methodi- eal and unconscious, of slight individual differences,-the latter kind of selection resulting from the occasional pre- servation, during hundreds of generations, of those indi- vidual dogs which were the most useful to man for cer- tain purposes and under certain conditions of life. In a future chapter on Selection I shall show that even bar- barians attend closely to the qualities of their dogs. This unconscious selection by man would be aided by a kind of natural selection; for the dogs of savages have partly to gain their own subsistence; for instance, in Australia, as we hear from Mr. Nind,“ the dogs are sometimes com- pelled by want to leave their masters and provide for themselves; but in a few days they generally return. 73 Quoted by Mr. Galton, 'Domestication of Animals,' p. 13. CHAP. I. 55 MEANS OF MODIFICATION. And we may infer that dogs of different shapes, sizes, and habits, would have the best chance of surviving un- der different circumstances,-on open, sterile plains, where they have to run down their own prey,-on rocky coasts, where they have to feed on crabs and fish left in the tidal pools, as in the case of New Guinea and Tierra del Fuego. In this latter country, as I am informed by Mr. Bridges, the Catechist to the Mission, the dogs turn over the stones on the shore to catch the crustaceans which lie beneath, and they are clever enough to knock off the shell-fish at a first blow;" for if this be not done, shell-fish are well known to have an almost invincible power of adhesion. It has already been remarked that dogs differ in the degree to which their feet are webbed. In dogs of the Newfoundland breed, which are eminently aquatic in their habits, the skin, according to Isidore Geoffroy, extends to the third phalanges, whilst in ordinary dog's it extends only to the second. In two Newfoundland dogs which I examined, when the toes were stretched apart and viewed on the under side, the skin extended in a nearly straight line between the outer margins of the balls of the toes; whereas, in two terriers of distinct sub-breeds, the skin viewed in the same manner was deeply scooped out. In Canada there is a dog which is peculiar to the country and common there, and this has “half-webbed feet and is fond of the water.” 76 English otter-hounds are said to have webbed feet; a friend ex- amined for me the feet of two, in comparison with the feet of some harriers and bloodhounds; he found the skin variable in extent in all, but more developed in the otter than in the other hounds. As aquatic animals which belong to quite different orders have webbed feet, there can be no doubt that this structure would be ser- 74 Hist. Nat. Gén.,' tom. iii. p. 450. 75 Mr. Greenhow on the Canadian Dog, in Loudon's 'Mag. of Nat. Hist.,' vol vi. 1833, p. 511. 78 See Mr. C. O. Groom-Napier on the webbing of the bind feet of Otter-hounds in Land and Water,' Oct. 13th, 1866, p. 270. 56 CHAP. I. DOGS. viceable to dogs that frequent the water. We may confi- dently infer that no man ever Selected his water-dogs by the extent to which the skin was developed between their toes; but what he does, is to preserve and breed from those individuals which hunt best in the water, or best retrieve wounded game, and thus he unconsciously selects dogs with feet slightly better webbed. Man thus closely imitates Natural Selection. We have an excellent illustration of this same process in North America, where, according to Sir J. Richardson," all the wolves, foxes, and aboriginal domestic dogs have their feet broader than in the corresponding species of the Old World, and “well calculated for running on the snow.' Now, in these Arctic regions, the life or death of every animal will often depend on its success in hunting over the snow when softened; and this will in part depend on the feet being broad; yet they must not be so broad as to interfere with the activity of the animal when the ground is sticky, or with its power of burrowing holes or with other habits of life. As changes in domestic breeds which take place so slowly as not to be noticed at any period, whether due to the selection of individual variations or of differences re- sulting from crosses, are most important in understand- ing the origin of our domestic productions, and likewise in throwing indirect light on the changes effected under nature, I will give in detail such cases as I have been able to collect. Lawrence, who paid particular atten- tion to the history of the foxhound, writing in 1829, says that between eighty and ninety years before an entirely new foxhound was raised through the breeder's art,” the ears of the old southern hound being reduced, the bone and bulk lightened, the waist increased in length, and the stature somewhat added to. It is believed that this 77 Fauna Boreali-Americana,' 1829, 78 The Horse in all his Varieties, &c., 1829, pp. 230, 234. P. 62. CHAP. I. 57 MEANS OF MODIFICATION. was effected by a cross with the greyhound. With re- spect to this latter dog, Youаtt 79 who is generally cau- tious in his statements, says that the greyhound within the last fifty years, that is before the commencement of the present century, "assumed a somewhat different character from that which he once possessed. He is now distinguished by a beautiful symmetry of form, of which he could not once boast, and he has even superior speed to that which he formerly exhibited. He is no longer used to struggle with deer, but contends with his fellows over a shorter and speedier course." An able writer 80 believes that our English greyhounds are the descend- ants, progressively improved, of the large rough grey- hounds which existed in Scotland so early as the third century. A cross at some former period with the Italian greyhound has been suspected; but this seems hardly probable, considering the feebleness of this latter breed. Lord Orford, as is well known, crossed his famous grey- hounds, which failed in courage, with a bulldog-this breed being chosen from being deficient in the power of scent; “after the sixth or seventh generation,” says Youatt, "there was not a vestige left of the form of the bulldog, but his courage and indomitable perseverance remained." Youatt infers, from a comparison of an old picture of King Charles's spaniels with the living dog, that “the breed of the present day is materially altered for the 'worse :" the muzzle has become shorter, the forehead more prominent, and the eyes larger: the changes in this case have probably been due to simple selection. The setter, as this author remarks in another place, "is evi- dently the large spaniel improved to his present peculiar size and beauty, and taught another way of marking his game. If the form of the dog were not sufficiently satis- 79 The Dog,' 1845, pp. 31, 35; with 80 In the Encyclop. of Rural Sports,' respect to King Charles's spaniel, p. 45; p. 557. for the setter, p. 90. 58 CHAP. I. DOGS. factory on this point, we might have recourse to history :") he then refers to a document dated 1685 bearing on this subject, and adds that the pure Irish setter shows no signs of a cross with the pointer, which some authors suspect has been the case with the English setter. Another writer 81 remarks that, if the mastiff and English bulldog had formerly been as distinct as they are at the present time (i.e. 1828), so accurate an observer as the poet Gay (who was the author of 'Rural Sports' in 1711) would have spoken in his Fable of the Bull and the Bulldog, and not of the Bull and the Mastiff. There can be no doubt that the fancy bulldogs of the present day, now that they are not used for bull-baiting, have become greatly reduced in size, without any express intention on the part of the breeder. Our pointers are certainly descended from a Spanish breed, as even their names, Don, Ponto, Carlos, &c., would show: it is said that they were not known in England before the Revolution in 1688; 82 but the breed since its introduction has been much modified, for Mr. Borrow, who is a sportsman and knows Spain intimately well, informs me that he has not seen in that country any breed “corresponding in figure with the English pointer; but there are genuine pointers near Xeres which have been imported by English gentlemen.” A nearly parallel case is offered by the Newfoundland dog, which was cer- tainly brought into England from that country, but which has since been so much modified that, as several writers have observed, it does not now closely resemble any ex- isting native dog in Newfoundland.83 These several cases of slow and gradual changes in our English dogs possess some interest; for though the changes have generally, but not invariably, been caused 81 The Farrier,' 1829, vol. i. p. 337. 82 See Col. Hamilton Smith on the an- tiquity of the Pointer, in Naturalist's Library,' vol. x. p. 196. 83 The Newfoundland dog is believed to have originated from a cross between the Esquimaux dog and a large French hound. See Dr. Hodgkin, Brit Assoc.,' 1844; Bechstein's 'Naturgesch. Deutsch- lands, Band i. s. 574; Naturalist's Library,' vol. x. p. 132; also Mr. Jukes' Excursion in and about Newfoundland.' CHAP. I. 59 DOMESTIC CATS: THEIR PARENTAGE. by one or two crosses with a distinct breed, yet we may feel sure, from the well-known extreme variability of crossed breeds, that rigorous and long-continued selection must have been practised, in order to improve them in a definite manner. As soon as any strain or family became slightly improved or better adapted to altered circum- stances, it would tend to supplant the older and less im- proved strains. For instance, as soon as the old foxhound was improved by a cross with the greyhound, or by sim- ple selection, and assumed its present character-and the change was probably required by the increased fleetness of our hunters-it rapidly spread throughout the country, and is now everywhere nearly uniform. But the process of improvement is still going on, for every one tries to improve his strain by occasionally procuring dogs from the best kennels. Through this process of gradual substi- tution the old English hound has been lost; and so it has been with the old Irish greyhound and apparently with the old English bulldog. But the extinction of former breeds is apparently aided by another cause; for when- ever a breed is kept in scanty numbers, as at present with the bloodhound, it is reared with difficulty, and this ap- parently is due to the evil effects of long-continued close interbreeding. As several breeds of the dog have been slightly but sensibly modified within so short a period as the last one or two centuries, by the selection of the best individual dogs, modified in many cases by crosses with other breeds; and as we shall hereafter see that the breed- ing of dogs was attended to in ancient times, as it still is by savages, we may conclude that we have in selection, even if only occasionally practised, a potent means of modification. DOMESTIC CATS. Cats have been domesticated in the East from an ancient period; Mr. Blyth informs me that they are mentioned in a Sanskrit writing 2000 years old, and in Egypt their 60 CHAP. I. DOMESTIC CATS. antiquity is known to be even greater, as shown by mon- umental drawings and their mummied bodies. These mummies, according to De Blainville, 64 who has particu- larly studied the subject, belong to no less than three species, namely, F. caligulata, bubastes, and chaus. The two former species are said to be still found, both wild and domesticated, in parts of Egypt. F. caligulata presents a difference in the first inferior milk molar tooth, as compared with the domestic cats of Europe, which makes De Blainville conclude that it is not one of the parent-forms of our cats. Several naturalists, as Pallas, Temminck, Blyth, believe that domestic cats are the de- scendants of several species commingled : it is certain that cats cross readily with various wild species, and it would appear that the character of the domestic breeds has, at least in some cases, been thus affected. Sir W. Jardine has no doubt that, “in the north of Scotland, there has been occasional crossing with our native species (F. sylvestris), and that the result of these crosses has been kept in our houses. I have seen,” he adds,“ many cats very closely resembling the wild cat, and one or two that could scarcely be distinguished from it.” Mr. Blyth® remarks on this passage, “but such cats are never seen in the southern parts of England ; still, as compared with any Indian tame cat, the affinity of the ordinary British cat to F. sylvestris is manifest; and due I suspect to frequent intermixture at a time when the tame cat was first introduced into Britain and continued rare, while the wild species was far more abundant than at present.” In Hungary, Jeitteles was assured on trustworthy authority that a wild male cat crossed with 86 84 De Blainville, Ostéographie, Felis,' p. 65, on the character of F. caligulata, pp. 85, 89, 90, 175, on the other mum- mied species. He quotes Ehrenberg on F. maniculata being mummied. 85 Asiatic Soc. of Calcutta; Curator's Report, Aug. 1856. The passage from Sir W. Jardine is quoted from this Re- port. Mr. Blyth, who has especially at- tended to the wild and domestic cats of India, has given in this Report a very interesting discussion on their origin. 88 Fauna Hungariæ Sup.,' 1862, s. 12. CHAP. I. 61 THEIR VARIATION. a female domestic cat, and that the hybrids long lived in a domesticated state. In Algiers the domestic cat has crossed with the wild cat (F. Lybica) of that country. 87 In South Africa, as Mr. E. Layard informs me, the do- mestic cat intermingles freely with the wild F. caffra; he has seen a pair of hybrids which were quite tame and particularly attached to the lady who brought them up; and Mr. Fry has found that these hybrids are fertile. In India the domestic cat, according to Mr. Blyth, has cross- ed with four Indian species. With respect to one of these species, F. chaus, an excellent observer, Sir W. Elliot, informs me that he once killed, near Madras, a wild brood, which were evidently hybrids from the do- mestic cat; these young animals had a thick lynx-like tail and the broad brown bar on the inside of the fore- arm characteristic of F. chaus. Sir W. Elliot adds that he has often observed this same mark on the forearms of domestic cats in India. Mr. Blyth states that domestic cats coloured nearly like F. chaus, but not resembling that species in shape, abound in Bengal; he adds,“ such a colouration is utterly unknown in European cats, and the proper tabby markings (pale streaks on a black ground, peculiarly and symmetrically disposed) so com- mon in English cats, are never seen in those of India.” Dr. D. Short has assured Mr. Blythe' that at Hansi hy- brids between the common cat and F. ornata (or tor- quata) occur, “and that many of the domestic cats of that part of India were undistinguishable from the wild F. ornata.” Azara states, but only on the authority of the inhabitants, that in Paraguay the cat has crossed with two native species. From these several cases we see that in Europe, Asia, Africa, and America, the com- mon cat, which lives a freer life than most other domesti- cated animals, has crossed with various wild species; 87 Isid. Geoffroy Saint Hilaire, Hist. Nat. Gén., ' tom. iii. p. 177. 88 Proc. Zoolog. Soc., ' 1863, p. 184. 62 CHAP. I. DOMESTIC CATS. and that in some instances the crossing has been suffi- ciently frequent to affect the character of the breed. Whether domestic cats have descended from several distinct species, or have only been modified by occa- sional crosses, their fertility, as far as is known, is unim- paired. The large Angora or Persian cat is the most dis- tinct in structure and habits of all the domestic breeds; and is believed by Pallas, but on no distinct evidence, to be descended from the F. manul of middle Asia; but I am assured by Mr. Blyth that this cat breeds freely with Indian cats, which, as we have already seen, have appa- rently been much crossed with F. chaus. In England half-bred Angora cats are perfectly fertile with the com- mon cat; I do not know whether the half-breeds are fer- tile one with another; but as they are common in some parts of Europe, any marked degree of sterility could hardly fail to have been noticed. Within the same country we do not meet with distinct races of the cat, as we do of dogs and of most other domestic animals; though the cats of the same country present a considerable amount of fluctuating variability. The explanation obviously is that, from their nocturnal and rambling habits, indiscriminate crossing cannot with- out much trouble be prevented. Selection cannot be brought into play to produce distinct breeds, or to keep those distinct which have been imported from foreign lands. On the other hand, in islands and in countries completely separated from each other, we meet with breeds more or less distinct; and these cases are worth giving as showing that the scarcity of distinct races in the same country is not caused by a deficiency of varia- bility in the animal. The tailless cats of the Isle of Man are said to differ from common cats not only in the want of a tail, but in the greater length of their hind legs, in the size of their heads, and in habits. The Creole cat of Antigua, as I am informed by Mr. Nicholson, is smaller, and has a more elongated head, than the British cat. In CHAP. I. 63 THEIR VARIATION. Ceylon, as Mr. Thwaites writes to me, every one at first notices the different appearance of the native cat from the English animal; it is of small size, with closely lying hairs; its head is small, with a receding forehead; but the ears are large and sharp; altogether it has what is there called a “low-caste" appearance. Rengger 80 says that the domestic cat, which has been bred for 300 years in Paraguay, presents a striking difference from the Eu- ropean cat; it is smaller by a fourth, has a more lanky body, its hair is short, shining, scanty, and lies close, especially on the tail: he adds that the change has been less at Ascension, the capital of Paraguay, owing to the continual crossing with newly imported cats; and this fact well illustrates the importance of separation. The conditions of life in Paraguay appear not to be highly favourable to the cat, for, though they have run half- wild, they do not become thoroughly feral, like so many other European animals. In another part of South Ame- rica, according to Roulin,'' the introduced cat has lost the habit of uttering its hideous nocturnal howl. The Rev. W. D. Fox purchased a cat in Portsmouth, which he was told came from the coast of Guinea ; its skin was black and wrinkled, fur bluish-grey and short, its ears rather bare, legs long, and whole aspect peculiar. This negro cat was fertile with common cats. On the posite coast of Africa, at Mombas, Captain Owen, R.N.,01 states that all the cats are covered with short stiff hair instead of fur: he gives a curious account of a cat from Algoa Bay, which had been kept for some time on board and could be identified with certainty; this animal was left for only eight weeks at Mombas, but during that short period it “underwent a complete metamorphosis, “having parted with its sandy-coloured fur.'' ” A cat op- 89 Saeugethiere von Paraguay,' 1830, s. 212. 90 Mem. présentés par divers Sa- vans: Acad. Roy. des Sciences,' tom. vi. p. 346. Gomara first noticed this fact in 1554. 91 Narrative of Voyages,' vol. ii. p. 150. 64 CHAP. I. DOMESTIC CATS. from the Cape of Good Hope has been described by Desmarest as remarkable from a red stripe extending along the whole length of its back. Throughout an im- mense area, namely, the Malayan archipelago, Siam, Pe- gu, and Burmah, all the cats have truncated tails about half the proper length, often with a sort of knot at the end. In the Caroline archipelago the cats have very long legs, and are of a reddish-yellow colour." In China a breed has drooping ears. At Tobolsk, according to Gmelin, there is a red-coloured breed. In Asia, also, we find the well-known Angora or Persian breed. The domestic cat has run wild in several countries, and everywhere assumes, as far as can be judged by the short recorded descriptions a uniform character. Near Mal- donado, in La Plata, I shot one which seemed perfectly wild; it was carefully examined by Mr. Waterhouse, 94 who found nothing remarkable in it, excepting its great size. In New Zealand, according to Dieffenbach, the feral cats assume a streaky grey colour like that of wild cats; and this is the case with the half-wild cats of the Scotch Highlands. We have seen that distant countries possess distinct do- mestic races of the cat. The difference may be in part due to descent from several aboriginal species, or at least to crosses with them. In some cases, as in Paraguay, Mombas, and Antigua, the differences seem due to the direct action of different conditions of life. In other cases some slight effect may possibly be attributed to natural selection, as cats in many cases have largely to support themselves and to escape diverse dangers. But man, owing to the difficulty of pairing cats, has done nothing by methodi- cal selection ; and probably very little by unintentional p. 308. 92 J. Crawfurd, 'Descript. Dict. of the Indian Islands,' p. 255. The Madagas- car cat is said to have a twisted tail : see Desmarest, in 'Encyclop. Nat. Mamm.,' 1820, p. 233, for some of the other breeds. 03 Admiral Lutké's Voyage, vol. iii. 94 'Zoology of the Voyage of the Bea- gle, Mammalia,' p. 20. Dieffenbach, Travels in New Zealand,' vol. ii. p. 185. Ch. St. John, 'Wild Sports of the High- lands,' 1846, p. 40. CHAP. I. 65 THEIR VARIATION. selection; though in each litter he generally saves the prettiest, and values most a good breed of mouse or rat- catchers. Those cats which have a strong tendency to prowl after game, generally get destroyed by traps. As cats are so much petted, a breed bearing the same rela- tion to other cats, that lapdogs bear to larger dogs, would have been much valued ; and if selection could have been applied, we should certainly have had many breeds in each long-civilized country, for there is plenty of variabil- ity to work upon. We see in this country considerable diversity in size, some in the proportions of the body, and extreme variabili- ty in colouring. I have only lately attended to this subject, but have already heard of some singular cases of varia- tion; one of a cat born in the West Indies toothless, and remaining so all its life. Mr. Tegetmeier has shown me the skull of a female cat with its canines so much devel- oped that they protruded uncovered beyond the lips; the tooth with the fang being .95, and the part projecting from the gum 6 of an inch in length. I have heard of a family of six-toed cats. The tail varies greatly in length; I have seen a cat which always carried its tail flat on its back when pleased. The ears vary in shape, and certain strains, in England, inherit a pencil-like tuft of hairs, above a quarter of an inch in length, on the tips of their ears; and this same peculiarity, according to Mr. Blyth, characterises some cats in India. The great variability in the length of the tail and the lynx-like tufts of hairs on the ears are apparently analogous to differences in certain wild species of the genus. A much more important dif- ference, according to Daubenton, is that the intestines of domestic cats are wider, and a third longer, than in wild cats of the same size; and this apparently has been caused by their less strictly carnivorous diet. 95 Quoted by Isid. Geoffroy, 'Hist. Nat. Gén.,' tom. iii. p. 427. 66 CHAP. II, HORSES. CHAPTER II. HORSES AND ASSES. HORSE. DIFFERENCES IN THE BREEDS INDIVIDUAL VARIA- BILITY OF DIRECT EFFECTS OF THE CONDITIONS OF LIFE CAN WITHSTAND MUCH COLD — BREEDS MUCH MODIFIED BY SE- LECTION - COLOURS OF THE HORSE - DAPPLING - DARK STRIPES ON THE SPINE, LEGS, SHOULDERS, AND FOREHEAD - DUN-COLOUR- ED HORSES MOST FREQUENTLY STRIPED STRIPES PROBABLY DUE TO REVERSION TO THE PRIMITIVE STATE OF THE HORSE. ASSES. -BREEDS OF COLOUR OF — LEG- AND SHOULDER-STRIPES SHOULDER-STRIPES SOMETIMES ABSENT, SOMETIMES FORKED. The history of the Horse is lost in antiquity. Remains of this animal in a domesticated condition have been found in the Swiss lake-dwellings, belonging to the lat- ter part of the Stone period. At the present time the number of breeds is great, as may be seen by consulting any treatise on the Horse. Looking only to the native ponies of Great Britain, those of the Shetland Isles, Wales, the New Forest, and Devonshire are distinguish- able; and so it is with each separate island in the great Malay archipelago. Some of the breeds present great differences in size, shape of ears, length of mane, pro- 1 Rütimeyer, 'Fauna der Pfahlbauten,' 1861, s. 122. 2 See Youаtt on the Horse: J. Law- rence on the Horse, 1829 : W. C. L. Mar- tin, History of the Horse,' 1845 : Col. Ham. Smith, in Naturalist's Library, Horses,' 1841, vol. xii. : Prof. Veith, 'Die Naturgesch. Haussäugethiere,' 1856. 3 Crawfurd, 'Descript. Dict. of Indian Islands, 1856, p. 153. * There are many different breeds, every island har- ing at least one peculiar to it." Thus in Sumatra there are at least two breeds ; in Achin and Batubara one; in Java sev- eral breeds; one in Bali, Lomboc, Sum- bawa (one of the best breels), Tambora, Bima, Gunung-api, Celebes, Sumba, and Philippines. Other breeds are specified by Zollinger in the Journal of the In- dian Archipelago,' vol. v. p. 343, &c. CHAP. II. 67 THEIR VARIATION. portions of the body, form of the withers and hind quar- ters, and especially in the head. Compare the race-horse, dray-horse, and a Shetland pony in size, configuration, and disposition; and see how much greater the difference is than between the six or seven other living species of genus Equus. Of individual variations not known to characterise particular breeds, and not great or injurious enough to be called monstrosities, I have not collected many cases. Mr. G. Brown, of the Cirencester Agricultural College, who has particularly attended to the dentition of our do- mestic animals, writes to me that he has "several times noticed eight permanent incisors instead of six in the jaw.” Male horses alone properly have canines, but they are occasionally found in the mare, though of small size. The number of ribs is properly eighteen, but Youatt. asserts that not unfrequently there are nineteen on each side, the additional one being always the poste- rior rib. I have seen several notices of variations in the bones of the leg; thus Mr. Price speaks of an addition- al bone in the hock, and of certain abnormal appearances between the tibia and astragalus, as quite common in Irish horses, and not due to disease. Horses have often been observed, according to M. Gaudry,' to possess a trapezium and a rudiment of a fifth metacarpal bone, so that “one sees appearing by monstrosity, in the foot of the horse, structures which normally exist in the foot of the Hipparion,”-an allied and extinct animal. In vari- ous countries horn-like projections have been observed on the frontal bones of the horse: in one case described by Mr. Percival they arose about two inches above the orbital processes, and were “very like those in a calf from five to six months old," being from half to three- 4 The Horse,' &c., by John Lawrence, 1829, p. 14. 5 The Veterinary,' London, vol, v. p. 543. 6 Proc. Veterinary Assoc., in The Ve- terirary,' vol. xiii. p. 42. 7 Bulletin de la Soc. Géolog.,' tom. xxii., 1866, p. 22. 68 CHAP. II. HORSES. quarters of an inch in length.Azara has described two cases in South America in which the projections were between three and four inches in length: other in- stances have occurred in Spain. That there has been much inherited variation in the horse cannot be doubted, when we reflect on the number of the breeds existing throughout the world or even within the same country, and when we know that they have largely increased in number since the earliest known records. Even in so fleeting a character as co- lour, Hofacker found that, out of two hundred and six- teen cases in which horses of the same colour were paired, only eleven pairs produced foals of a quite different co- lour. As Professor Low 11 has remarked, the English race-horse offers the best possible evidence of inheritance. The pedigree of a race-horse is of more value in judging of its probable success than its appearance : King He- gained in prizes 201,5051. sterling, and begot 497 winners; "Eclipse" begot 334 winners. Whether the whole amount of difference between the various breeds be due to variation is doubtful. From the fertility of the most distinct breeds when crossed, nat- uralists have generally looked at all the breeds as having descended from a single species. Few will agree with Colonel H. Smith, who believes that they have descend- ed from no less than five primitive and differently colour- ed stocks, But as several species and varieties of the rod” 13 8 Mr. Percival, of the Enniskillen Dra- goons, in 'The Veterinary,' vol. i. p. 224: see Azara, 'Des Quadrupèdes du Para- guay,' tom. ii. p. 313. The French trans- lator of Azara refers to other cases men- tioned by Huzard as occurring in Spain. 9 Godron, 'De l'Espèce,' tom. i. p. 378. 10 'Ueber die Eigenschafter,' &c., 1828, s. 10. 11 Domesticated Animals of the Brit- ish Islands,' pp. 527, 532. In all the ve- terinary treatises and papers which I have read, the writers insist in the strongest terms on the inheritance by the horse of all good and bad tendencies and qualities. Perhaps the principle of inheritance is not really stronger in the horse than in any other animal; but, from its value, the tendency has been more carefully observed. 12 Andrew Knight crossed breeds so different in size as a dray-horse and Nor- wegian pony ; see A. Walker on Inter- marriage,' 1838, p. 205. 13 Naturalist's Library,' Horses, vol. xii. p. 208. CHAP. II. 69 THEIR VARIATION. horse existed 14 during the later tertiary periods, and as Rütimeyer found differences in the size and form of the skull in the earliest known domesticated horses, 16 we ought not to feel sure that all our breeds have descended from a single species. As we see that the savages of North and South America easily reclaim the feral horses, there is no improbability in savages in various quarters of the world having domesticated more than one native species or natural race. No aboriginal or truly wild horse is positively known now to exist; for it is thought by some authors that the wild horses of the East are escaped domestic animals. 16 If our domestic breeds have descend- ed from several species or natural races, these apparently have all become extinct in the wild state. With our present knowledge, the common view that all have de- scended from a single species is, perhaps, the most probable. With respect to the causes of the modifications which horses have undergone, the conditions of life seem to produce a considerable direct effect. Mr. D. Forbes, who has had excellent opportunities of comparing the horses of Spain with those of South America, informs me that the borses of Chile, which have lived under nearly the same conditions as their progenitors in Andalusia, remain unaltered, whilst the Pampas horses and the Puno ponies are considerably modified. There can be no doubt that horses become greatly reduced in size and altered in ap- pearance by living on mountains and islands; and this apparently is due to want of nutritious or varied food. Every one knows how small and rugged the ponies are on the Northern islands and on the mountains of Europe. Corsica and Sardinia have their native ponies; and there 14 Gervais, Hist. Nat. Mamm.,' tom. ii. p. 143. Owen, British Fossil Mam- mals,' p. 353. 15 Kenntniss der fossilen Pferde,' 1863, s. 131 16 Mr. W. C. L. Martin (The Horse,' 1845, p. 34), in arguing against the belief that the wild Eastern horses are merely feral, has remarked on the improbability of man in ancient times having extirpated a species in a region where it can now exist in numbers. 70 CHAP. II. HORSES. were," or still are, on some islands on the coast of Virgi- nia, ponies like those of the Shetland Islands, which are believed to have originated through exposure to unfa- vourable conditions. The Puno ponies, which inhabit the lofty regions of the Cordillera, are, as I hear from Mr. D. Forbes, strange little creatures, very unlike their Spanish progenitors. Further south, in the Falkland Islands, the offspring of the horses imported in 1764 have already so much deteriorated in size 18 and strength that they are unfitted for catching wild cattle with the lasso; so that fresh horses have to be brought for this purpose from La Plata at a great expense. The reduced size of the horses bred on both southern and northern islands, and on sev- eral mountain-chains, can hardly have been caused by the cold, as a similar reduction has occurred on the Virginian and Mediterranean islands. The horse can withstand in- tense cold, for wild troops live on the plains of Siberia under lat. 56°,10 and aboriginally the horse must have in- habited countries annually covered with snow, for he long retains the instinct of scraping it away to get at the herb- age beneath. . The wild tarpans in the East have this in- stinct; and, as I am informed by Admiral Sulivan, this is likewise the case with the horses which have run wild on the Falkland Islands; now this is the more remarkable as the progenitors of these horses could not have followed this instinct during many generations in La Plata : the wild cattle of the Falklands never scrape away the snow, and perish when the ground is long covered. In the northern parts of America the horses, descended from those introduced by the Spanish conquerors of Mexico, have the same habit, as have the native bisons, but not so the cattle introduced from Europe.20 17 Transact. Maryland Academy,' vol. i. part i. p. 28. 18 Mr. Mackinnon on The Falkland Islands,' p. 25. The average height of the Falkland horses is said to be 14 hands 2 inches. See also my 'Journal of Researches.' 19 Pallas, Act. Acad. St. Peters- burgh,' 1777, part ii. p. 265. With re- spect to the tarpans scraping away the snow, see Col. Hamilton Smith in Nat. Lib.,' vol. xii. p. 165. 20 Franklin's 'Narrative,' vol. i. p. 87; note by Sir J. Richardson. CHAP. II. 71 THEIR COLOURS AND STRIPES. 22 The horse can flourish under intense heat as well as under intense cold, for he is known to come to the high- est perfection, though not attaining a large size, in Arabia and northern Africa. Much humidity is apparently more injurious to the horse than heat or cold. In the Falk- land Islands, horses suffer much from the dampness; and this same circumstance may perhaps partly account for the singular fact that to the eastward of the Bay of Ben- gal, over an enormous and humid area, in Ava, Pegu, Siam, the Malayan archipelago, the Loo Choo Islands, and a large part of China, no full-sized horse is found. When we advance as far eastward as Japan, the horse reacquires his full size.? With most of our domesticated animals, some breeds are kept on account of their curiosity or beauty; but the horse is valued almost solely for its utility. Hence semi- monstrous breeds are not preserved; and probably all the existing breeds have been slowly formed either by the direct action of the conditions of life, or through the se- lection of individual differences. No doubt semi-mon- strous breeds might have been formed; thus Mr. Water- ton records as the case of a mare which produced succes- sively three foals without tails, so that a tailless race might have been formed like the tailless races of dogs and cats. A Russian breed of horses is said to have frizzled hair, and Azara 24 relates that in Paraguay horses are oc- casionally born, but are generally destroyed, with hair like that on the head of a negro; and this peculiarity is transmitted even to half-breeds: it is a curious case of correlation that such horses have short manes and tails, 21 Mr. J. H. Moor, Notices of the In- dian Archipelago :' Singapore, 1887, p. 189. A pony from Java was sent ('Athe- næum,' 1842, p. 718) to the Queen only 28 inches in height. For the Loo Choo Islands, see Beechey's Voyage,' 4th edit. vol. i. p. 499. 22 J. Crawford, 'History of the Horse;' Journal of Royal United Service Institu- tion,' vol. iv. Essays on Natural History,' 2nd series, p. 161. "Quadrupèdes du Paraguay,' tom. ii. p. 333. 234 24 4 72 CHAP. II. HORSES. and their hoofs are of a peculiar shape like those of a mule. It is scarcely possible to doubt that the long-continued selection of qualities serviceable to man has been the chief agent in the formation of the several breeds of the horse. Look at a dray-horse, and see how well adapted he is to draw heavy weights, and how unlike in appear- ance to any allied wild animal. The English race-horse is known to have proceeded from the commingled blood of Arabs, Turks, and Barbs; but selection and training have together made him a very different animal from his parent-stocks. As a writer in India, who evidently knows the pure Arab well, asks, who now, “looking at our present breed of race-horses, could have conceived that they were the result of the union of the Arab horse and African mare?” The improvement is so marked that in running for the Goodwood Cup “the first descendants of Arabian, Turkish, and Persian horses, are allowed a dis- count of 18 lbs. weight; and when both parents are of these countries a discount of 36 lbs.25. It is notorious that the Arabs have long been as careful about the pedi- gree of their horses as we are, and this implies great and continued care in breeding. Seeing what has been done in England by careful breeding, can we doubt that the Arabs must likewise have produced during the course of centuries a marked effect on the qualities of their horses? But we may go much farther back in time, for in the most ancient known book, the Bible, we hear of studs carefully kept for breeding, and of horses imported at high prices from various countries. We may therefore conclude 26 p. 181. 25 Prof. Low, 'Domesticated Animals, p. 546. With respect to the writer in In- dia, see 'India Sporting Review, vol. ii. As Lawrence has remarked ("The Horse,' p. 9), "perhaps no in- stance has ever occurred of a three-part bred horse (i.e. a horse, one of whose grand-parents was of impure blood) sav- ing his distance in running two miles with thoroughbred racers.” Some few instances are on record of seven-eighths racers having been successful. 26 Prof. Gervais (in his Hist. Nat. Mamm.,' tom. ii. p. 144) has collected many facts on this head. For instance, Solomon (Kings, b.i.ch. x. v. 28) bought horses in Egypt at a high price. CHAP. II. 73 THEIR COLOURS AND STRIPES. that, whether or not the various existing breeds of the horse have proceeded from one or more aboriginal stocks, yet that a great amount of change has resulted from the direct action of the conditions of life, and probably a still greater amount from the long-continued selection by man of slight individual differences. With several domesticated quadrupeds and birds, cer- tain coloured marks are either strongly inherited or tend to reappear after having long been lost. As this subject will hereafter be seen to be of importance, I will give a full account of the colouring of horses. All English breeds, however unlike in size and appearance, and sev- eral of those in India and the Malay archipelago, present a similar range and diversity of colour. The English race-horse, however, is said a' never to be dun-coloured ; but as dun and cream-coloured horses are considered by the Arabs as worthless, “and fit only for Jews to ride," these tints may have been removed by long-continued selection. Horses of every colour, and of such widely different kinds as dray-horses, cobs, and ponies, are all occasionally dappled, in the same manner as is so con- spicuous with grey horses. This fact does not throw any clear light on the colouring of the aboriginal horse, but is a case of analogous variation, for even asses are sometimes dappled, and I have seen, in the British Museum, a hybrid from the ass and zebra dappled on its hinder quarters. By the expression analogous variation (and it is one that I shall often have occasion to use) I mean a variation occurring in a species or vari- ety which resembles a normal character in another and 9 28 27 The Field,' July 13th, 1861, p. 42. 28 E. Vernon Harcourt, Sporting in Algeria,' p. 26. 29 I state this from my own observa- tions made during several years on the colours of horses. I have seen cream-co- loured, light-dun and mouse-dun horses dappled, which I mention because it has been stated (Martin, History of the Horse,' p. 134) that duns are never dap- pled. Martin (p. 205) refers to dap- pled asses. In The Farrier' (London, 1828, pp. 453, 455) there are some good remarks on the dappling of horses; and likewise in Col, Hamilton Smith on The Horse.' 4 74 CHAP. II. HORSES. distinct species or variety. Analogous variations may arise, as will be explained in a future chapter, from two or more forms with a similar constitution having been exposed to similar conditions,-or from one of two forms having reacquired through reversion a character inherited by the other form from their common progenitor, -or from both forms having reverted to the same ancestral character. We shall immediately see that horses oc- casionally exhibit a tendency to become striped over a large part of their bodies; and as we know that stripes readily pass into spots and cloudy marks in the varieties of the domestic cat and in several feline species-even the cubs of the uniformly-coloured lion being spotted with dark marks on a lighter ground—we may suspect that the dappling of the horse, which has been noticed by some authors with surprise, is a modification or vestige of a tendency to become striped. This tendency in the horse to become striped is in several respects an interesting fact. Horses of all colours, of the most diverse breeds, in various parts of the world, often have a dark stripe ex- tending along the spine, from the mane to the tail ; but this is so common that I need enter into no particulars.30 Occasionally horses are transversely barred on the legs, chiefly on the under side; and more rarely they have a distinct stripe on the shoulder, like that on the shoulder of the ass, or a broad dark patch repre- senting a stripe. Before entering on any details I must premise that the term dun-coloured is vague, and includes three groups of colour, viz. that between cream-colour and reddish brown, which graduates into light-bay or light-chesnut-this, I believe, is often called fallow-dun ; secondly, leaden or slate-colour or mouse-dun, which graduates into an ash-colour; and, lastly, dark-dun, between brown and black. In England I have examined a rather large, lightly- built, fallow-dun Devonshire pony (fig. 1), with a conspicuous stripe along the back, with light transverse stripes on the under sides of its front legs, and with four parallel stripes on each shoulder. 30 Some details are given in 'The Far- rier; '1828, pp. 452, 455. One of the least ponies I ever saw, of the colour of a mouse, had a conspicuous spinal stripe. A small Indian chesnut pony had the same stripe, as had a remarkably heavy chesnut cart-horse. Race-horses often have the spinal stripe. CHAP. II. 75 THEIR COLOURS AND STRIPES. . Fig. 1.-Dun Devonshire Pony, with shoulder, spinal, and leg stripes. Of these four stripes the posterior one was very minute and faint; the anterior one, on the other hand, was long and broad, but in- terrupted in the middle, and truncated at its lower extremity, with the anterior angle produced into a long tapering point. I mention this latter fact because the shoulder-stripe of the ass occasionally presents exactly the same appearance. I have had an outline and description sent to me of a small, purely-bred, light fallow-dun Welch pony, with a spinal stripe, a single transverse stripe on each leg, and three shoulder-stripes ; the posterior stripe corresponding with that on the shoulder of the ass was the longest, whilst the two anterior parallel stripes, arising from the mane, decreased in length, in a reversed manner as compared with the shoulder-stripes on the above-described Devonshire pony. I have seen a bright fallow-dun, strong cob, with its front legs transversely barred on the under sides in the most conspicuous manner; also a dark-leaden mouse-coloured pony with similar leg stripes, but much less conspi- cuous; also a bright fallow-dun colt, fully three-parts thoroughbred, with very plain transverse stripes on the legs; also a chesnut-dun cart-horse with a conspicuous spinal stripe, with distinct traces of shoulder-stripes, but none on the legs; I could add other cases. My son made a sketch for me of a large, heavy, Belgian cart-horse, of a fallow-dun, with a conspicuous spinal stripe, traces of leg. stripes, and with two parallel (three inches apart) stripes about seven or eight inches in length on both shoulders. I have seen another rather light cart-horse, of a dirty dark cream-colour, with striped legs, and on one shoulder a large ill-defined dark cloudy 76 CHAP. II. HORSES. patch, and on the opposite shoulder two parallel faint stripes. All the cases yet mentioned are duns of various tints; but Mr. W. W. Edwards has seen a nearly thoroughbred chesnut horse which had the spinal stripe, and distinct bars on the legs; and I have seen two bay carriage-horses with black spinal stripes; one of these horses had on each shoulder a light shoulder-stripe, and the other had a broad black ill-defined stripe, running obliquely half-way down each shoulder; neither had leg-stripes. The most interesting case which I have met with occurred in a colt of my own breeding. A bay mare (descended from a dark-brown Flemish mare by a light grey Turcoman horse) was put to Hercules, a thoroughbred dark bay, whose sire (Kingston) and dam were both bays. The colt ultimately turned out brown; but when only a fort- night old it was a dirty bay, shaded with mouse-grey, and in parts with a yellowish tint: it had only a trace of the spinal stripe, with a few obscure transverse bars on the legs; but almost the whole body was marked with very narrow dark stripes, in most parts so obscure as to be visible only in certain lights, like the stripes which may be seen on black kittens. These stripes were distinct on the hind-quarters, where they diverged from the spine, and pointed a little forwards; many of them as they diverged from the spine be- came a little branched, exactly in the same manner as in some zebrine species. The stripes were plainest on the forehead between the ears, where they formed a set of pointed arches, one under the other, decreasing in size downwards towards the muzzle ; exactly similar marks may be seen on the forehead of the quagga and Burchell's zebra. When this foal was two or three months old all the stripes entirely disappeared. I have seen similar marks on the forehead of a fully grown, fallow-dun, cob-like horse, having a con- spicuous spinal stripe, and with its front legs well barred. In Norway the colour of the native horse or pony is dun, varying from almost cream-colour to dark mouse-dun ; and an animal is not considered purely bred unless it has the spinal and leg stripes.31 In one part of the country my son estimated that about a third of the ponies had striped legs; he counted seven stripes on the fore-legs and two on the hind-legs of one pony ; only a few of them exhibit- ed traces of shoulder-stripes; but I have heard of a cob imported from Norway which had the shoulder as well as the other stripes well developed. Colonel Ham. Smith 82 alludes to dun-horses with 81 I have received information, through the kindness of the Consul-General, Mr. J. R. Crowe, from Prof. Boeck, Rasck, and Esmarck, on the colours of the Norwegian ponies. See, also, The Field,' 1861, p. 431. 32 Col. Ham. Smith, Nat. Lib.,' vol, xii. p. 275. CEAP. II. 77 THEIR COLOURS AND STRIPES. the spinal stripe in the Sierras of Spain ; and the horses originally derived from Spain, in some parts of South America, are now duns. Sir W. Elliot informs me that he inspected a herd of 300 South American horses imported into Madras, and many of these had transverse stripes on the legs and short shoulder-stripes; the most strongly marked individual, of which a coloured drawing was sent me, was a mouse-dun, with the shoulder-stripes slightly forked. In the North-Western parts of India striped horses of more than one breed are apparently commoner than in any other part of the world ; and I have received information respecting them from sev- eral officers, especially from Colonel Poole, Colonel Curtis, Major Campbell, Brigadier St. John, and others. The Katty war horses are often fifteen or sixteen hands in height, and are well but lightly built. They are of all colours, but the several kinds of duns pre- vail ; and these are so generally striped, that a horse without stripes is not considered pure. Colonel Poole believes that all the duns have the spinal stripe, the leg-stripes are generally present, and he thinks that about half the horses have the shoulder-stripe; this stripe is sometimes double or treble on both shoulders. Colonel Poole has often seen stripes on the cheeks and sides of the nose. He has seen stripes on the grey and bay Kattywars when first foaled, but they soon faded away. I have received other accounts of cream- coloured, bay, brown, and grey Kattywar horses being striped. Eastward of India, the Shan (north of Burmah) ponies, as I am in- formed by Mr. Blyth, have spinal, leg, and shoulder stripes. Sir W. Elliot informs me that he saw two bay Pegu ponies with leg- stripes. Burmese and Javanese ponies are frequently dun-coloured, and have the three kinds of stripes, " in the same degree as in Eng- land.” 33 Mr. Swinhoe informs me that he examined two light-dun ponies of two Chinese breeds, viz. those of Shanghai and Amoy ; both had the spinal stripe, and the latter an indistinct shoulder-stripe. We thus see that in all parts of the world breeds of the horse as different as possible, when of a dun-colour (including under this term a wide range of tint from cream to dusky black), and rarely when of bay, grey, and chesnut shades, have the several above- specified stripes. Horses which are of a yellow colour with white mane and tail, and which are sometimes called duns, I have never seen with stripes. 34 From reasons which will be apparent in the chapter on Reversion, 33 Mr. G. Clark, in Annal and Mag. of Nat. History,' 2nd series, vol. ii., 1848, p. 363. Mr. Wallace informs me that he saw in Java a dun and clay-coloured horse with spinal and leg stripes. 34 See, also, on this point, The Field,' July 27th, 1861, p. 91. 78 CHAP. II. HORSES. I have endeavoured, but with poor success, to discover whether duns, which are so much oftener striped than other coloured horses, are ever produced from the crossing of two horses, neither of which are duns. Most persons to whom I have applied believe that one parent must be a dun; and it is generally asserted, that, when this is the case, the dun-colour and the stripes are strongly inherited.35 One case has fallen under my own observation of a foal from a black mare by a bay horse, which when fully grown was a dark fallow- dun and had a narrow but plain spinal stripe. Hofacker 36 gives two instances of mouse-duns (Mausrapp) being produced from two parents of different colours and neither duns. I have also endeavoured with little success to find out whether the stripes are generally plainer or less plain in the foal than in the adult horse. Colonel Poole informs me that, as he believes, "the stripes are plainest when the colt is first foaled; they then become less and less distinct till after the first coat is shed, when they come out as strongly as before ; but certainly often fade away as the age of the horse increases.” Two other accounts confirm this fading of the stripes in old horses in India. One writer, on the other hand, states that colts are often born without stripes, but that they appear as the colt grows older. Three authorities affirm that in Norway the stripes are less plain in the foal than in the adult. Perhaps there is no fixed rule. In the case described by me of the young foal which was narrowly striped over nearly all its body, there was no doubt about the early and complete disappearance of the stripes. Mr. W. W. Edwards examined for me twenty-two foals of race- horses, and twelve had the spinal stripe more or less plain ; this fact, and some other accounts which I have received, lead me to believe that the spinal stripe often disappears in the English race- horse when old. On the whole I infer that the stripes are generally plainest in the foal, and tend to disappear in old age. The stripes are variable in colour, but are always dark- er than the rest of the body. They do not by any means always coexist on the different parts of the body: the legs may be striped without any shoulder-stripe, or the converse case, which is rarer, may occur; but I have never heard of either shoulder or leg-stripes without the spinal stripe. The latter is by far the commonest of all the stripes, as might have been expected, as it character- 35 "The Field,' 1861, pp. 431, 493, 545. 36 Ueber die Eigenschaften,' &c., 1828, s. 13, 14. CHAP. II. 79 THEIR COLOURS AND STRIPES. ises the other seven or eight species of the genus. It is remarkable that so trifling a character as the shoulder- stripe being double or triple should occur in such different breeds as Welch and Devonshire ponies, the Shan pony, heavy cart-horses, light South American horses, and the lanky Kattywar breed. Colonel Hamilton Smith be- lieves that one of his five supposed primitive stocks was dun-coloured and striped; and that the stripes in all the other breeds result from ancient crosses with this one primitive dun; but it is extremely improbable that differ- ent breeds living in such distant quarters of the worla should all have been crossed with any one aboriginally distinct stock. Nor have we any reason to believe that the effects of a cross at a very remote period could be propagated for so many generations as is implied on this view. With respect to the primitive colour of the horse hav- ing been dun, Colonel Hamilton Smith " has collected a large body of evidence showing that this tint was com- mon in the East as far back as the time of Alexander, and that the wild horses of Western Asia and Eastern Europe now are, or recently were, of various shades of dun. It seems that not very long ago a wild breed of dun-coloured horses with a spinal stripe was preserved in the royal parks in Prussia. I hear from Hungary that the inhabitants of that country look at the duns with a spinal stripe as the aboriginal stock, and so it is in Nor- way. Dun-coloured ponies are not rare in the mountain- ous parts of Devonshire, Wales, and Scotland, where the aboriginal breed would have had the best chance of being preserved. In South America in the time of Azara, when the horse had been feral for about 250 years, 90 out of 37 Naturalist's Library,' vol. xii. (1841), pp. 109, 156 to 163, 280, 281. Cream-colour, passing into Isabella (i.e. the colour of the dirty linen of Queen Isabella), seems to have been common in ancient times. See also Pallas's ac- count of the wild horses of the East, who speaks of dun and brown as the preva- lent colours. 80 CHAP. II. HORSES. 100 horses were “bai-châtains," and the remaining ten were “zains,” and not more than one in 2000 black. Zain is generally translated as dark without any white; but as Azara speaks of mules being “zain-clair," I suspect that zain must have meant dun-coloured. In some parts of the world feral horses show a strong tendency to be- 38 come roans. In the following chapters on the Pigeon we shall see that in pure breeds of various colours, when a blue bird is occasionally produced, certain black marks invariably appear on the wings and tail; so again, when variously coloured breeds are crossed, blue birds with the same black marks are frequently produced. We shall further see that these facts are explained by, and afford strong evidence in favour of, the view that all the breeds are descended from the rock-pigeon, or Columba livia, which is thus coloured and marked. But the appearance of the stripes on the various breeds of the horse, when of a dun- colour, does not afford nearly such good evidence of their descent from a single primitive stock as in the case of the pigeon; because no certainly wild horse is known as a standard of comparison; because the stripes when they do appear are variable in character; because there is far from sufficient evidence of the appearance of the stripes from the crossing of distinct breeds; and lastly, because all the species of the genus Equus have the spinal stripe, and several have shoulder and leg stripes. Nevertheless the similarity in the most distinct breeds in their general range of colour, in their dappling, and in the occasional 38 Azara, 'Quadrupèdes du Paraguay,' tom. ii. p. 307; for the colour of mules, see p. 350. In North America, Catlin, (vol. ii. p. 57) describes the wild horses, believed to have descended from the Spanish horses of Mexico, as of all col- ours, ack, grey, roan, and roan pied with sorrel. F. Michaux (Travels in North America,' Eng translat., p. 235) describes two wild horses from Mexico as roan. In the Falkland Islands, where the horse has been feral only between 60 and 70 years, I was told that roans and iron-greys were the prevalent colours. These several facts show that horses do not generally revert to any uniform colour. CHAP. II. 81 ASSES. appearance, especially in duns, of leg-stripes and of double or triple shoulder-stripes, taken together, indicate the probability of the descent of all the existing races from a single, dun-coloured, more or less striped, primitive stock, to which our horses still occasionally revert. THE Ass. 39 Four species of Asses, besides three of zebras, have been described by naturalists; but there can now be little doubt that our domesticated animal is descended from one alone, namely, the Asinus tæniopus of Abyssinia. The Ass is sometimes advanced as an instance of an ani- mal domesticated, as we know by the Old Testament, from an ancient period, which has varied only in a very slight degree. But this is by no means strictly true; for in Syria alone there are four breeds;49 first, a light and graceful animal, with an agreeable gait, used by ladies ; secondly, an Arab breed reserved exclusively for the sad- dle; thirdly, a stouter animal used for ploughing and va- rious purposes ; and lastly, the large Damascus breed, with a peculiarly long body and ears. In this country, and generally in Central Europe, though the ass is by no means uniform in appearance, it has not given rise to dis- tinct breeds like those of the horse. This may probably be accounted for by the animal being kept chiefly by poor persons, who do not rear large numbers, nor carefully match and select the young For, as we shall see in a future chapter, the ass can with ease be greatly improved in size and strength by careful selection, combined no doubt with good food; and we may infer that all its other cha- racters would be equally amenable to selection. The small size of the ass in England and Northern Europe is apparently due far more to want of care in breeding than 89 Dr. Sclater, in 'Proc. Zoolog. Soc.,' 1862, p. 164. 40 W. C. Martin, History of the Horse,' 1845, p. 207. 82 CHAP. II. ASSES > 41 to cold; for in Western India, where the ass is used as a beast of burden by some of the lower castes, it is not much larger than a Newfoundland dog," being generally not more than from twenty to thirty inches high." The ass varies greatly in colour; and its legs, especially the fore-legs, both in England and other countries—for instance, in China—are occasionally barred transversely more plainly than those of dun-coloured horses. With the horse the occasional appearance of leg-stripes was ac- counted for, through the principle of reversion, by the supposition that the primitive horse was thus striped ; with the ass we may confidently advance this explanation, for the parent-form, the A. toniopus, is known to be barred, though only in a slight degree, across the legs. The stripes are believed to occur most frequently and to be plainest on the legs of the domestic ass during early youth, as is apparently likewise the case with the horse. The shoulder-stripe, which is so eminently characteristic of the species, is nevertheless variable in breadth, length, and manner of termination. I have measured a shoulder- stripe four times as broad as another; and some more than twice as long as others. In one light-grey ass the shoul- der-stripe was only six inches in length, and as thin as a piece of string; and in other animal of the same colour there was only a dusky shade representing a stripe. I have heard of three white asses, not albinoes, with no trace of shoulder or spinal stripes ; and I have seen nine other asses with no shoulder-stripe, and some of them had no spinal stripe. Three of the nine were light-greys, one a dark-grey, another grey passing into reddish-roan, and the others were brown, two being tinted on parts of their bodies with a reddish or bay-shade. Hence we may 41 Col. Sykes' Cat. of Mammalia, Proc. Zoolog. Soc.,' July 12th, 1831. Williamson, Oriental Field Sports,' vol, ii., quoted by Martin, p. 206. 42 Blyth, in Charlesworth's Mag. of Nat. Hist.,' vol. iv., 1840, p. 83. I have also been assured by a breeder that this is the case. 43 One case is given by Martin, The Horse,' p. 205. CHAP. II. 83 THEIR COLOURS AND STRIPES. 44 conclude that, if grey and reddish-brown asses had been steadily selected and bred from the shoulder-stripe would have been almost as generally and as completely lost as in the case of the horse. The shoulder-stripe on the ass is sometimes double, and Mr. Blyth has seen even three or four parallel stripes. I have observed in ten cases shoulder-stripes abruptly truncated at the lower end, with the anterior angle pro- duced into a tapering point, precisely as has been figured in the dun Devonshire pony. I have seen three cases of the terminal portion abruptly and angularly bent; and two cases of a distinct though slight forking. In Syria, Dr. Hooker and his party observed for me no less than five instances of the shoulder-stripe being plainly forked over the fore leg. In the common mule it is likewise sometimes forked. When I first noticed the forking and angular bending of the shoulder-stripe, I had seen enough of the stripes in the various equine species to feel con- vinced that even a character so unimportant as this had a distinct meaning, and was thus led to attend to the subject. I now find that in the Asinus Burchellii and quagga, the stripe which corresponds with the shoulder- stripe of the ass, as well as some of the stripes on the neck, bifurcate, and that some of those near the shoulder have their extremities angularly bent backwards. The forking and angular bending of the stripes on the shoul- ders apparently stand in relation with the changed direc- tion of the nearly upright stripes on the sides of the body and neck to the transverse bars on the legs. Finally we see that the presence of shoulder, leg, and spinal stripes in the horse,—their occasional absence in the ass,—the oc- currence of double and triple shoulder-stripes in both ani- mals, and the similar manner in which these stripes termi- nate at their lower extremities,--are all cases of analogous 44 Journal As. Soc. of Bengal,' vol. xxviii. 1860, p. 231. Martin on the Horse, p. 205. 84 CHAP. II. ASSES. variation in the horse and ass. These cases are probably not due to similar conditions acting on similar constitu- tions, but to a partial reversion in colour to the common progenitor of these two species, as well as of the other species of the genus. We shall hereafter have to return to this subject, and discuss it more fully. CHAP. III. 85 DOMESTIC PIGS. CHAPTER III. PIGS -- CATTLE - SHEEP - GOATS. PIGS BELONG TO TWO DISTINCT TYPES, SUS SCRÓFA AND INDICA — TORF-SCHWEIN - JAPAN PIG — FERTILITY OF CROSSED PIGS CHANGES IN THE SKULL OF THE HIGHLY CULTIVATED RACES CONVERGENCE OF CHARACTER GESTATION SOLID-HOOFED SWINE - CURIOUS APPENDAGES TO THE JAWS-DECREASE IN SIZE OF THE TUSKS-YOUNG PIGS LONGITUDINALLY STRIPED - - FERAL PIGS - CROSSED BREEDS. CATTLE. - ZEBU A DISTINCT SPECIES — EUROPEAN CATTLE PRO- BABLY DESCENDED FROM THREE WILD FORMS - ALL THE RACES NOW FERTILE TOGETHER — BRITISH PARK CATTLE — ON THE CO- LOUR OF THE ABORIGINAL SPECIES — CONSTITUTIONAL DIFFER- ENCES - SOUTH AFRICAN RACES SOUTH AMERICAN RACES NIATA CATTLE — ORIGIN OF THE VARIOUS RACES OF CATTLE. SHEEP. - REMARKABLE RACES OF — VARIATIONS ATTACHED TO THE MALE SEX - ADAPTATIONS TO VARIOUS CONDITIONS - GES- TATION OF — CHANGES IN THE WOOL -- SEMI-MONSTROUS BREEDS. GOATS. — REMARKABLE VARIATIONS OF. The breeds of the pig have recently been more closely studied, though much still remains to be done, than those of almost any other domesticated animal. This has been effected by Hermann von Nathusius in two admirable works, especially in the later one on the Skulls of the several races, and by Rütimeyer in his celebrated Fauna of the ancient Swiss lake-dwellings.' Nathusius has shown that all the known breeds may be divided in two great groups: one resembling in all important re- 1 Hermann von Nathusius, 'Die Racen des Schweines, 'Berlin, 1860; and 'Vor- studien fur Geschichte,' &c., 'Schweine- schädel,' Berlin, 1864. Rütimeyer, "Die Fauna der Pfahlbauten,' Basel, 1861. 86 CHAP. III. DOMESTIC PIGS. spects and no doubt descended from the common wild boar; so that this may be called the Sus scrofa group. The other group. differs in several important and con- stant osteological characters; its wild parent-form is unknown; the name given to it by Nathusius, accord- ing to the law of priority, is Sus Indica of Pallas. This name must now be followed, though an unfortunate one, as the wild aboriginal does not inhabit India, and the best- known domesticated breeds have been imported from Siam and China. Firstly, the Sus scrofa breeds, or those resembling the common wild boar. These still exist, according to Na- thusius (Schweineschädel, s. 75), in various parts of cen- tral and northern Europe; formerly every kingdom, and almost every province in Britain, possessed its own na- tive breed; but these are now everywhere rapidly disap- pearing, being replaced by improved breeds crossed with the S. Indica form. The skull in the breeds of the S. scrofa type resembles, in all important respects, that of the European wild boar; but it has become (Schweine- schädel, s. 63-68) higher and broader relatively to its length; and the hinder part is more upright. The dif- ferences, however, are all variable in degree. The breeds which thus resemble S. scrofa in their essential skull- characters differ conspicuously from each other in other respects, as in the length of the ears and legs, curvature of the ribs, colour, hairiness, size and proportions of the body. The wild Sus scrofa has a wide range, namely, Europe, North Africa, as identified by osteological characters by Rütimeyer, and Hindostan, as similarly identified by Na- thusius. But the wild boars inhabiting these several coun- tries differ so much from each other in external characters, that they have been ranked by some naturalists as speci- 2 Nathusius, Die Racen des Schweines, Berlin, 1860. An excellent appendix is given with references to published and trustworthy drawings of the breeds of each country. CHAP. III. 87 THEIR PARENTAGE. fically distinct. Even within Hindostan these animals, according to Mr. Blyth, form very distinct races in the different districts; in the N. Western provinces, as I am informed by the Rev. R. Everest, the boar never exceeds 36 inches in height, whilst in Bengal one has been mea- sured 44 inches in height. In Europe, Northern Africa, and Hindostan, domestic pigs have been known to cross with the wild native species; and in Hindostan an ac- curate observer, Sir Walter Elliot, after describing the differences between wild Indian and wild German boars, remarks that “the same differences are perceptible in the domesticated individuals of the two countries." We may therefore conclude that the breeds of the Sus scrofa type have either descended from, or been modified by cross- ing with, forms which may be ranked as geographical races, but which are, according to some naturalists, dis- tinct species. Pigs of the Sus Indica type are best known to Eng- lishmen under the form of the Chinese breed. The skull of S. Indica, as described by Nathusius, differs from that of S. scrofa in several minor respects, as in its greater breadth and in some details in the teeth; but chiefly in the shortness of the lachrymal bones, in the greater width of the fore part of the palate-bones, and in the divergence of the premolar teeth. It deserves especial notice that these latter characters are not gained, even in the least degree, by the domesticated forms of S. scrofa. After reading the remarks and descriptions given by Nathu- sius, it seems to me to be merely playing with words to doubt whether S. Indica ought to be ranked as a spe- cies; for the above-specified differences are more strongly 3 For Europe, see Bechstein, Natur- gesch. Deutschlands,' 1801, b. i., s. 505. Several accounts have been published on the fertility of the offspring from wild and tame swine. See Burdach's Physiology,' and Godron, De l'Es- pèce,' tom. i. p. 370. For Africa, Bull. de la Soc. d'Acclimat.,' tom. iv. p. 389. For India, see Nathusius, Schweine- schädel,' s. 148. 4 Sir W. Elliot, Catalogue of Mamma- lia, Madras Journal of Lit. and Sci- ence,' vol. x. p. 219. 88. CHAP. III. DOMESTIC PIGS. marked than any that can be pointed out between, for instance, the fox and the wolf, or the ass and the horse. As already stated, S. Indica is not known in a wild state; but its domesticated forms, according to Nathusius, come near to S. vittatus of Java and some allied species. A pig found wild in the Aru islands (Schweineschädel, s. 169) is apparently identical with S. Indica ; but it is doubtful whether this is a truly native animal. The do- mesticated breeds of China, Cochin-China, and Siam be- long to this type. The Roman or Neapolitan breed, the Andalusian, the Hungarian, and the “Krause " swine of Nathusius, inhabiting south-eastern Europe and Turkey, and having fine curly hair, and the small Swiss "Bündt- nerschwein” of Rütimeyer, all agree in their more impor- tant skull characters with S. Indica, and, as is supposed, have all been largely crossed with this form. Pigs of this type have existed during a long period on the shores of the Mediterranean, for a figure (Schweineschädel, s. 142) closely resembling the existing Neapolitan pig has been found in the buried city of Herculaneum. Rütimeyer has made the remarkable discovery that there lived contemporaneously in Switzerland, during the later Stone or Neolithic period, two domesticated forms, the S. scrofa, and the S. scrofa palustris or Torfschwein. Rütimeyer perceived that the latter approached the East- ern breeds, and, according to Nathusius, it certainly be- longs to the S. Indica group; but Rütimeyer has subse- quently shown that it differs in some well-marked cha- racters. This author was formerly convinced that his Torfschwein existed as a wild animal during the first part of the Stone period, and was domesticated during a later part of the same period. Nathusius, whilst he fully admits the curious fact first observed by Rüti- meyer, that the bones of domesticated and wild animals can be distinguished by their different aspect, yet, from 5 Pfahlbauten,' s. 163 et passim. CHAP. III. 89 THEIR PARENTAGE. special difficulties in the case of the bones of the pig (Schweineschädel, s. 147), is not convinced of the truth of this conclusion; and Rütimeyer himself seems now to feel some doubt. As the Torfschwein was domesticated at so early a period, and as its remains have been found in several parts of Europe, belonging to various historic and prehistoric ages, and as closely allied forms still exist in Hungary and on the shores of the Mediterra- nean, one is led to suspect that the wild s. Indica for- merly ranged from Europe to China, in the same manner as S. scrofa now ranges from Europe to Hindostan. Or, as Rütimeyer apparently suspects, a third allied species may formerly have lived in Europe and Eastern Asia. Several breeds, differing in the proportions of the body, in the length of the ears, in the nature of the hair, in co- lour, &c., come under the S. Indica type. Nor is this surprising, considering how ancient the domestication of this form has been both in Europe and in China. In this latter country the date is believed by an eminent Chinese scholar' to go back at least 4900 years from the present time. This same scholar alludes to the existence of many local varieties of the pig in China; and at the present time the Chinese take extraordinary pains in feed- ing and tending their pigs, not even allowing them to walk from place to place. Hence the Chinese breed, as Nathusius has remarked, displays in an eminent degree the characters of a highly-cultivated race, and hence, no doubt, its high value in the improvement of our Euro- pean breeds. Nathusius makes a remarkable statement (Schweineschädel, s. 138), that the infusion of the band, or even of the cath, part of the blood of S. Indica into a breed of S. scrofa, is sufficient plainly to modify the skull of the latter species. This singular fact may perhaps be 8 See Rütimeyer's Neue Beitrage, .... Torfschweine, Verh. Naturfor. Gesell. in Basel, iv. i., 1865, s. 139. 7 Stan. Julien, quoted by De Blain- ville, Ostéographie, p. 163. 8 Richardson, 'Pigs, their Origin,' &c., p. 26. 9. Die Racen des Schweines,' s. 47, 64. 90 CHAP. III. DOMESTIC PIGS. accounted for by several of the chief distinctive charac- ters of S. Indica, such as the shortness of the lachrymal bones, etc., being common to several of the species of the genus; for in crosses the characters which are common to many species apparently tend to be prepotent over those appertaining to only a few species. The Japan pig (S. pliciceps of Gray), which has been recently exhibited in the Zoological Gardens, has an ex- traordinary appearance from its short head, broad fore- and rose, great fleshy ears, and deeply furrowed skin. The following woodcut is copied from that given by Mr. Fig. 2.-Head of Japan or Masked Pig. (Copied from Mr. Bartlett's paper in Proc. Zoolog. Soc, 1861, p. 263.) Bartlett. Not only is the face furrowed, but thick folds 10 Proc. Zoolog. Soc.,'1861, p. 263. CHAP. III. 91 THEIR VARIATION. of skin, which are harder than the other parts, almost like the plates on the Indian rhinoceros, hang about the shoulders and rump. It is coloured black, with white feet, and breeds true. That it has long been domesticated there can be little doubt; and this might have been in- ferred even from the fact that its young are not longitu- dinally striped; for this is a character common to all the species included within the genus Sus and the allied gen- era whilst in their natural state.Dr. Gray 12 has de- scribed the skull of this animal, which he ranks not only as a distinct species, but places it in a distinct section of the genus. Nathusius, however, after his careful study of the whole group, states positively (Schweineschädel, s. 153-158) that the skull in all essential characters closely resembles that of the short-eared Chinese breed of the S. Indica type. Hence Nathusius considers the Japan pig as only a domesticated variety of S. Indica : if this really be the case, it is a wonderful instance of the amount of modification which can be effected under domestication. Formerly there existed in the central islands of the Pa- cific Ocean a singular breed of pigs. These are described by the Rev. D. Tyerman and G. Bennett 13 as of small size, hump-backed, with a disproportionately long head, with short ears turned backwards, with a bushy tail not more than two inches in length, placed as if it grew from the back. Within half a century after the introduction into these islands of European and Chinese pigs, the native breed, according to the above authors became almost completely lost by being repeatedly crossed with them. Secluded islands, as might have been expected, seem fa- vourable for the production or retention of peculiar breeds; thus, in the Orkney Islands, the hogs have been described as very small, with erect and sharp ears, and “with an 11 Sclater, in 'Proc. Zoolog. Soc.,' Feb. 26th, 1861. 12 Proc. Zoolog. Soc.,' 1962, p. 13. 13 Journal of Voyages and Travels from 1921 to 1829,' vol. i. p. 300. 92 CHAP. III. DOMESTIC PIGS. appearance altogether different from the hogs brought from the south.” 14 Seeing how different the Chinese pigs belonging to the Sus Indica type, are in their osteological characters and in external appearance from the pigs of the S. scrofa type, so that they must be considered specifically distinct, it is a fact well deserving attention, that Chinese and com- mon pigs have been repeatedly crossed in various manners, with unimpaired fertility. One great breeder who had used pure Chinese pigs assured me that the fertility of the half-breeds inter se and of their recrossed progeny was actually increased; and this is the general belief of agri- culturists. Again, the Japan pig or S. pliciceps of Gray is so distinct in appearance from all common pigs, that it stretches one's belief to the utmost to admit that it is simply a domestic variety; yet this breed has been found perfectly fertile with the Berkshire breed; and Mr. Eyton informs me that he paired a half-bred brother and sister and found them quite fertile together. The modifications of the skull in the most highly cul- tivated races are wonderful. To appreciate the amount of change, Nathusius' work, with its excellent figures, should be studied. The whole of the exterior of the skull in all its parts has been altered; the hinder surface, in- stead of sloping backwards, is directed forwards, entail- ing many changes in other parts; the front of the head is deeply concave; the orbits have a different shape; the auditory meatus has a different direction and shape; the incisors of the upper and lower jaws do not touch each other, and they stand in both jaws above the plane of the molars; the canines of the upper jaw stand in front of those of the lower jaw, and this is a remarkable anomaly: the articular surfaces of the occipital condyles are so greatly changed in shape, that, as Nathusius remarks (s. 14 Rev. G. Low, 'Fauna Orcadensis,' p. 10. See also Dr. Hibbert's account of the pig of the Shetland Islands. CHAP. III. 93 THEIR VARIATION. 133), no naturalist, seeing this important part of the skull by itself, would suppose that it belonged to the genus Sus. These and various other modifications, as Nathusius observes, can hardly be considered as monstrosities, for they are not injuri- ous, and are strictly inherited. The whole head is much shortened ;' thus, whilst in common breeds its length to that of the body is as 1 to 6, in the cultur-races” the proportion is as 1 to 9, and even recently as 1 to 11.15 The fol- lowing woodcut 16 of the head of a wild boar and of a sow from a photograph of the the Yorkshire Large Breed, may aid in showing how greatly the head in a highly cultivated race has been modi- fied and shortened. Nathusius has Fig. 3.-Head of Wild Boar, and of “Golden Days," well discussed the a pig of the Yorkshire Large Breed; the latter causes of the re- from a photograph. (Copied from Sidney's edit. markable changes of The Pig,' by Youatt.) 15 Die Racen des Schweines,' s. 70. 16 These woodcuts are copied from en- gravings given in Mr. S. Sidney's excel- lent edition of The Pig,' by Youatt. See pp. 1, 16, 19. 94 CHAP. II. DOMESTIC PIGS. 17 in the skull and shape of the body which the highly cul- tivated races have undergone. These modifications oc- cur chiefly in the pure and crossed races of the S. Indica type; but their commencement may be clearly detected in the slightly improved breeds of the S. scrofa type." Nathusius states positively (s. 99, 103), as the result of common experience and of his experiments, that rich and abundant food, given during youth, tends by some direct action to make the head broader and shorter; and that poor food works a contrary result. He lays much stress on the fact that all wild and semi-domesticated pigs, in ploughing up the ground with their muzzles, have, whilst young, to exert the powerful muscles fixed to the hinder part of the head. In highly cultivated races this habit is no longer followed, and consequently the back of the skull becomes modified in shape, entailing other changes in other parts. There can hardly be a doubt that so great a change in habits would affect the skull; but it seems rather doubtful how far this will account for the greatly reduced length of the skull and for its concave front. It is well known (Nathu- sius himself advancing many cases, s. 104) that there is a strong tendency in many domestic animals—in bull- and pug-dogs, in the niata cattle, in sheep, in Polish fowls, short-faced tumbler pigeons, and in one variety of the carp—for the bones of the face to become greatly shortened. In the case of the dog, as H. Müller has shown, this seems caused by an abnormal state of the pri- mordial cartilage. We may, however, readily admit that abundant and rich food supplied during many generations would give an inherited tendency to increased size of body, and that, from disuse, the limbs would become finer and shorter, 18 We shall in a future chapter also see that the skull and limbs are apparently in some manner cor- 17 Schweineschädel,' s. 74, 135. 18 Nathusius, ' Die Racen des Schweines,' s. 71. CHAP. III. 95 THEIR VARIATION. related, so that any change in the one tends to affect the other. Nathusius has remarked, and the observation is an interesting one, that the peculiar form of the skull and body in the most highly cultivated races is not charac- teristic of any one race, but is common to all when im- proved up to the same standard. Thus the large-bodied, long-eared, English breeds with a convex back, and the small-bodied, short-eared, Chinese breeds with a concave back, when bred to the same state of perfection, nearly resemble each other in the form of the head and body. This result, it appears, is partly due to similar causes of change acting on the several races, and partly to man breeding the pig for one sole purpose, namely, for the greatest amount of flesh and fat; so that selection has always tended towards one and the same end. With most domestic animals the result of selection has been divergence of character, here it has been convergence. The nature of the food supplied during many genera- tions has apparently affected the length of the intestines; for, according to Cuvier,° their length to that of the body in the wild boar is as 9 to 1,-in the common domestic boar as 13.5 to 1,--and in the Siam breed as 16 to 1. In this latter breed the greater length may be due either to descent from a distinct species or to more ancient domes- tication. The number of mammæ vary, as does the pe- riod of gestation. The latest authority says 21 that “the period averages from 17 to 20 weeks,” but I think there must be some error in this statement: in M. Tessier's observations on 25 sows it varied from 109 to 123 days. The Rev. W. D. Fox has given me ten carefully recorded cases with well-bred pigs, in which the period varied from 101 to 116 days. According to Nathusius the period is 19 19 Die Racen des Schweines,' s. 47. Schweineschädel,' s. 104. Compare, also, the figures of the old Irisd and the improved Irish breeds in Richardson on The Pig,' 1847. 20 Quoted by Isid. Geoffroy, 'Hist. Nat. Gén.,' tom. iii. p. 441. 21 S. Sidney, The Pig,' p. 61. 96 CHAP. III DOMESTIC PIGS. shortest in the races which come early to maturity; but in these latter the course of development does not appear to be actually shortened, for the young animal is born, judging from the state of the skull, less fully developed, or in a more embryonic condition,22 than in the case of common swine, which arrive at maturity at a later age. In the highly cultivated and early matured races, the teeth, also, are developed earlier. The difference in the number of the vertebræ and ribs in different kinds of pigs, as observed by Mr. Eyton," and as given in the following table, has often been quoted. The African sow probably belongs to the S. scrofa type; and Mr. Eyton informs me that, since the publication of his paper, cross-bred animals from the African and English races were found by Lord Hill to be perfectly fertile. 29 English Long-legged Male. African Female. Chinese Male. French Wild Boar, Domestic from Cu- Boar, from vier. Cuvier. 14 15 6 13 6 15 4 14 5 Dorsal vertebræ.. Lumbar .. Dorsal and lum-? bar together .. Sacral .. 21 5 19 5 19 4 19 4 19 4. Total number) of vertebræ .. 26 24 23 23 23 Some semi-monstrous breeds deserve notice. From the time of Aristotle to the present time solid-hoofed swine have occasionally been observed in various parts of the world. Although this peculiarity is strongly inherited, 92 Schweineschädel,' s. 2, 20. 29 Proc. Zoolog. Soc.,' 1837, p. 23. I have not given the caudal vertebræ, as Mr. Eyton says some might possibly have been lost. I have added together the dorsal and lumbar vertebræ, owing to Prof. Owen's remarks ('Journal Linn. Soc.,' vol. ii. p. 28) on the difference between dorsal and lumbar vertebræ depending only on the development of the ribs. Nevertheless the difference in the number of the ribs in pigs de rves notice. CHAP. III. 97 THEIR VARIATION. it is hardly probable that all the animals with solid hoofs have descended from the same parents; it is more proba- ble that the same peculiarity has reappeared at various times and places. Dr. Struthers has lately described and figured as the structure of the feet; in both front and hind feet the distal phalanges of the two greater toes are re- presented by a single, great, hoof-bearing phalanx ; and in the front feet, the middle phalanges are represented by a bone which is single towards the lower end, but bears two separate articulations towards the upper end. From other accounts it appears that an intermediate toe is likewise sometimes superadded. Another curious anomaly is offered by the appendages, described by M. Eudes-Deslongchamps as often character- izing the Normandy pigs. These appendages are always attached to the same spot, to the corners of the jaw; they are cylindrical, about three inches in length, covered with bristles, and with a pencil of bristles rising out of a sinus on one side: they have a cartilaginous centre, with two Fig. 4.-Old Irish Pig, with jaw-appendages. (Copied from H. D. Richardson on Pigs.) 24 'Edinburgh New Philosoph. Journal,' April, 1863. See also De Blainville's 'Os- téographie,'p. 123, for various authorities on this subject. 5 98 CHAP. III. DOMESTIC PIGS. small longitudinal muscles; they occur either symmetri- cally on both sides of the face or on one side alone. Richardson figures them on the gaunt old “ Irish Grey- hound pig;” and Nathusius states that they occasionally appear in all the long-eared races, but are not strictly in- herited, for they occur or fail in animals of the same lit- ter. 25 As no wild pigs are known to have analogous ap- pendages, we have at present no reason to suppose that their appearance is due to reversion; and if this be so, we are forced to admit that somewhat complex, though apparently useless, structures may be suddenly developed without the aid of selection. This case perhaps throws some light on the manner of appearance of the hideous fleshy protuberances, though of an essentially different nature from the above-described appendages, on the cheeks of the wart-hog or Phacocherus Africanus. It is a remarkable fact that the boars of all domesti- cated breeds have much shorter tusks than wild boars. Many facts show that with all animals the state of the hair is much affected by exposure to, or protection from, climate; and as we see that the state of the hair and teeth are correlated in Turkish dogs (other analogous facts will be hereafter given), may we not venture to surmise that the reduction of the tusks in the domestic boar is related to his coat of bristles being diminished from living under shelter ? On the other hand, as we shall immediately see, the tusks and bristles reappear with feral boars, which are no longer protected from the weather. It is not surprising that the tusks should be more affected than the other teeth ; as parts developed to serve as secondary sexual characters are always liable to much variation. It is a well-known fact that the young of wild Euro- 25 Eudes-Deslongchamps, Mémoires de la Soc. Linn. de Normandie,' vol. vii., 1842, p. 41. Richardson, Pigs, their Ori- gin, &c.,' 1547, p. 30. Nathusius, 'Die Racen des Schweines,' 1860, s. 54. CHAP. III. 99 THEIR VARIATION. pean and Indian pigs 26 for the first six months, are longi- tudinally banded with light-coloured stripes. This cha- racter generally disappears under domestication. The Turkish domestic pigs, however, have striped young, as have those of Westphalia, “whatever may be their hue;" 27 whether these latter pigs belong to the same curly- haired race with the Turkish swine, I do not know. The pigs which have run wild in Jamaica and the semi-feral pigs of New Granada, both those which are black and those which are black with a white band across the sto- mach, often extending over the back, have resumed this aboriginal character and produce longitudinally-striped young. This is likewise the case, at least occasionally, with the neglected pigs in the Zambesi settlement on the coast of Africa. The common belief that all domesticated animals, when they run wild, revert completely to the character of their parent-stock, is chiefly founded, as far as I can discover, on feral pigs. But even in this case the belief is not 28 26 D. Johnson's Sketches of Indian Field Sports,' p. 272. Mr. Crawfurd informs me that the same fact holds good with the wild pigs of the Malay peninsula. 27 For Turkish pigs, see Desmarest, Mammalogie,' 1820, p. 391. For those of Westphalia, see Richardson's Pigs, their Origin,' &c., 1817, p. 41. 28 With respect to the several fore- going and following statements on feral pigs, see Roulin, in "Mém. présentés par divers Savans à l'Acad.,' &c., Paris, tom. vi., 1835, p. 326. It should be observed that his account does not apply to truly feral pigs; but to pigs long introduced into the country and living in a half- wild state. For the truly feral pigs of Jamaica, see Gosse's 'Sojourn in Ja- maica,' 1851, p. 386; and Col. Hamilton Smith, in "Nat. Library,' vol. ix. p. 93. With respect to Africa, sce Livingstone's "Expedition to the Zambesi,' 1865, p. 153. The most precise statement with respect to the tusks of the West Indian feral boars is by P. Labat (quoted by Roulin); but this author attributes the state of these pigs to descent from a do- mestic stock which he saw in Spain. Admiral Sulivan, R.N., had ample op- portunities of observing the wild pigs on Eagle Islet in the Falklands; and he informs me that they resembled wild boars with bristly ridged backs and large tusks. The pigs which have run wild in the province of Buenos Ayres (Reng- ger, Säugethiere,' s. 331) have not re- verted to the wild type. De Blainville (Ostéographie,' p. 132) refers to two skulls of domestic pigs sent from Pata- gonia by Al. d'Orbigny, and he states that they have the occipital elevation of the wild European boar, but that the head altogether is "plus courte et plus ramassée." He refers, also, to the skin of a feral pig from North America, and says, “il ressemble tout à fait à un petit sanglier, mais il est presque tout noir, et peut-être un peu plus ramassé dans ses formes." 100 CHAP. III. DOMESTIC PIGS. grounded on sufficient evidence; for the two main types of S. scrofa and Indica have never been distinguished in a feral state. The young, as we have just seen, reac- quire their longitudinal stripes, and the boars invariably reassume their tusks. They revert also in the general shape of their bodies, and in the length of their legs and muzzles, to the state of the wild animal, as might have been expected from the amount of exercise which they are compelled to take in search of food. In Jamaica the feral pigs do not acquire the full size of the European wild boar, “never attaining a greater height than 20 inches at the shoulder.” In various countries they reas- sume their original bristly covering, but in different degrees, dependent on the climate ; thus, according to Roulin, the semi-feral pigs in the hot valleys of New Granada are very scantily clothed; whereas, on the Pa- ramos, at the height of 7000 to 8000 feet, they acquire a thick covering of wool lying under the bristles, like that on the truly wild pigs of France. These pigs on the Paramos are small and stunted. The wild boar of India is said to have the bristles at the end of its tail arranged like the plumes of an arrow, whilst the European boar has a simple tuft; and it is a curious fact that many, but not all, of the feral pigs in Jamaica, derived from a Span- ish stock, have a plumed tail. With respect to colour, feral pigs generally revert to that of the wild boar; but in certain parts of S. America, as we have seen, some of the semi-feral pigs have a curious white band across their stomachs; and in certain other hot places the pigs are red, and this colour has likewise occasionally been ob- served in the feral pigs of Jamaica. From these several facts we see that with pigs when feral there is a strong tendency to revert to the wild type; but that this ten- 29 29 Gosse's 'Jamaica,' p. 386, with a quotation from Williamson's Oriental Field Sports.' Also Col. Hamilton Smith, in "Naturalist's Library,' vol. ix. p. 94. CHAP. III. 101 CATTLE: THEIR PARENTAGE. dency is largely governed by the nature of the climate, amount of exercise, and other causes of change to which they have been subjected. The last point worth notice is that we have unusually good evidence of breeds of pigs now keeping perfectly true, which have been formed by the crossing of several distinct breeds. The Improved Essex pigs, for instance, breed very true; but there is no doubt that they largely owe their present excellent qualities to crosses originally made by Lord Western with the Neapolitan race, and to subsequent crosses with the Berkshire breed (this also having been improved by Neapolitan crosses), and like- wise, probably, with the Sussex breed. In breeds thus formed by complex crosses, the most careful and unre- mitting selection during many generations has been found to be indispensable. Chiefly in consequence of so much crossing, some well-known breeds have undergone rapid changes; thus, according to Nathusius, *1 the Berkshire breed of 1780 is quite different from that of 1810; and since this latter period, at least two distinct forms have borne the same name. CATTLE. DOMESTIC cattle are almost certainly the descendants of more than one wild form, in the same manner as has been shown to be the case with our dogs and pigs. Natural- ists have generally made two main divisions of cattle; the humped kinds inhabiting tropical countries, called in India Zebus, to which the specific name of Bos Indicus has been given; and the common non-humped cattle, generally in- cluded under the name of Bos taurus. The humped cattle were domesticated, as may be seen on the Egyptian monu- ments, at least as early as the twelfth dynasty, that is 2100 B.C. They differ from common cattle in various 30 S. Sidney's edition of 'Youаtt on the Pig,'1860, pp. 7, 26, 27, 29, 30. 31 Schweineschädel,' s. 140. 102 CHAP. III. CATTLE. osteological characters, even in a greater degree, accord- ing to Rütimeyer,2 than do the fossil species of Europe, namely Bos primigenius, longifrons, and frontosus, from each other. They differ, also, as Mr. Blyth," who has particularly attended to this subject, remarks, in general configuration, in the shape of their ears, in the point where the dewlap commences, in the typical curvature of their horns, in their manner of carrying their heads when at rest, in their ordinary variations of colour, espe- cially in the frequent presence of “nilgau-like markings on their feet," and "in the one being born with teeth pro- truding through the jaws, and the other not so." They have different habits, and their voice is entirely different. The humped cattle in India “seldom seek shade, and never go into the water and there stand knee-deep, like the cattle of Europe.” They have run wild in parts of Oude and Rohilound, and can maintain themselves in a region infested by tigers. They have given rise to many races differing greatly in size, in the presence of one or two humps, in length of horns, and other respects. Mr. Blyth sums up emphatically that the humped and hump- less cattle must be considered as distinct species. When we consider the number of points in external structure and habits, independently of their important osteological differences, in which they differ from each other; and that many of these points are not likely to have been affected by domestication, there can hardly be a doubt, notwithstanding the adverse opinion of some naturalists, that the humped and non-humped cattle must be ranked as specifically distinct. 32 Die Fauna der Pfahlbauten,'1861, s. 109, 149, 222. See also Geoffroy Saint Hilaire, in 'Mém. du Mus. d'Hist. Nat,' tom. x. p. 172; and his son Isidore, in Hist. Nat. Gén.,' tom. iii. p. 69. Vasey, in his Delineations of the Ox Tribe, 1851, p. 127, says the zebu has four, and the common ox five, sacral vertebræ. Mr. Hodgson found the ribs either thir- teen or fourteen in number; see a note in Indian Field,' 1858, p. 62. 33 The Indian Field,' 1858, p. 74, where Mr. Blyth gives his authorities with respect to the feral humped cattle. Pickering, also, in his 'Races of Man,' 1850, p. 274, notices the peculiar cha- racter of the grunt-like voice of the hump- ed cattle. CHAP. III. 103 THEIR PARENTAGE. The European breeds of humpless cattle are numerous. Professor Low enumerates 19 British breeds, only a few of which are identical with those on the Continent. Even the small Channel islands of Guernsey, Jersey, and Alderney, possess their own sub-breeds ; 34 and these again differ from the cattle of the other British islands, such as Anglesea, and the western isles of Scotland. Desmarest, who paid attention to the subject, describes 15 French races, excluding sub-varieties and those im- ported from other countries. In other parts of Europe there are several distinct races, such as the pale-coloured Hungarian cattle, with their light and free step, and their enormous horns sometimes measuring above five feet from tip to tip:85 the Podolian cattle are remarkable from the height of their forequarters. In the most recent work on Cattle,sº engravings are given of fifty-five European breeds; it is, however, probable that several of these differ very little from each other, or are merely syno- nyms. It must not be supposed that numerous breeds of cattle exist only in long-civilized countries, for we shall presently see that several kinds are kept by the savages of Southern Africa. With respect to the parentage of the several European breeds, we already know much from Nilsson's Memoir, 7 and more especially from Rütimeyer's Pfahlbauten' and succeeding works. Two or three specimens or forms of Bos, closely allied to still living domestic races, have been found fossil in the more recent tertiary deposits of Europe. Following Rütimeyer, we have :- Bos primigenius.—This magnificent, well-known species was do- mesticated in Switzerland during the Neolithic period; even at this early period it varied a little, having apparently been crossed with other races. Some of the larger races on the Continent, as the 34 Mr. H. E. Marquand, in The Times,' June 23rd, 1856. 35 Vasey, “Delineations of the Ox Tribe,' p. 124. Brace's 'Hungary,' 1851, p. 94. The Hungarian cattle descend, according to Rütimeyer ("Zahmen. Europ. Rindes., 1866, s. 13), from Bos prime- genius. 36 Moll and Gayot, ‘La Connaissance Gén. du Boeuf, Paris, 1860. Fig. 82 is that of the Podolian breed. 87 A translation appeared in three parts in the 'Annals and Mag. of Nat. Hist.,' 2nd series, vol. iv., 1849. 104 CHAP. III. CATTLE. 39 Friesland, &c., and the Pembroke race in England, closely resemble in essential structure B. primigenius, and no doubt are its descen- dants. This is likewise the opinion of Nilsson. Bos primigenius existed as a wild animal in Cæsar's time, and is now semi-wild, though much degenerated in size, in the park of Chillingham; for I am informed by Professor Rütimeyer, to whom Lord Tankerville sent a skull, that the Chillingham cattle are less altered from the true primigenius type than any other known breed. 38 Bos trochoceros.- This form is not included in the three species above mentioned, for it is now considered by Rütimeyer to be the female of an early domesticated form of B. primigenius, and as the progenitor of his frontosus race. I may add that specific names have been given to four other fossil oxen, now believed to be iden- tical with B. primigenius. Bos longifrons (or brachyceros) of Owen.—This very distinct spe. cies was of small size, and had a short body with fine legs. It has been found in England associated with the remains of the elephant and rhinoceros.40 It was the commonest form in a domesticated condition in Switzerland during the earliest part of the Neolithic period. It was domesticated in England during the Roman period, and supplied food to the Roman legionaries. 41 Some remains have been found in Ireland in certain crannoges, of which the dates are believed to be from 843–933 A.D.42 Professor Owen 43 thinks it pro- bable that the Welsh and Highland cattle are descended from this form ; as likewise is the case, according to Rütimeyer, with some of the existing Swiss breeds. These latter are of different shades of colour from light-grey to blackish-brown, with a lighter stripe along the spine, but they have no pure white marks. The cattle of North Wales and the Highlands, on the other hand, are generally black or dark-coloured. Bos frontosus of Nilsson.-This species is allied to B. longifrons, but in the opinion of some good judges is distinct from it. Both co- existed in Scania during the same late geological period,14 and both 38 See, also, Rütimeyer's Beitrage pal. Gesch, der Wiederkauer,' Basel, 1865, s. 54. 39 Pictet's Paléontologie,' tom. i. p. 865 (2nd edit.) With respect to B. tro- choceros, see Rütimeyer's 'Zahmen Eu- rop. Rindes,' 1866, s. 26. 40 Owen, British Fossil Mammals, 1846, p. 510. 41 British Pleistocene Mammalia,' by W. B. Dawkins and W. A. Sandford, 1866, p. xv. 42 W. R. Wilde, An Essay on the Animal Remains, &c., Royal Irish Aca- demy,' 1860, p. 29. Also Proc. of R. Irish Academy,' 1858, p. 48. 43 Lecture: Royal Institution of G. Britain,' May 2nd, 1856, p. 4. British Fossil Mammals,' p. 513. 44 Nilsson, in Annals and Mag. of Nat. Hist.,' 1849, vol. iv. p. 354. CHAP. III. 105 THEIR PARENTAGE. have been found in the Irish crannoges.45 Nilsson believes that his B. frontosus may be the parent of the mountain cattle of Norway, which have a high protuberance on the skull between the base of the horns. As Professor Owen believes that the Scotch Highland cattle are descended from his B. longifrons, it is worth notice that a capa- ble judge 46 has remarked that he saw no cattle in Norway like the Highland breed, but that they more nearly resembled the Devon- shire breed. Hence we see that three forms or species of Bos, ori- ginally inhabitants of Europe, have been domesticated; but there is no improbability in this fact, for the genus Bos readily yields to domestication. Besides these three species and the zebu, the yak, the gayal, and the arni "7 (not to mention the buffalo or genus Bubalus) have been domesticated; making altogether seven species of Bos. The zebu and the three European species are now extinct in a wild state, for the cattle of the B. primige- nius type in the British parks can hardly be considered as truly wild. Although certain races of cattle, domes- ticated at a very ancient period in Europe, are the de- scendants of the three above-named fossil species, yet it does not follow that they were here first domesticated. Those who place much reliance on philology argue that our cattle were imported from the East.48 But as races of men invading any country would probably give their own names to the breeds of cattle which they might there find domesticated, the argument seems inconclu- sive. There is indirect evidence that our cattle are the descendants of species which originally inhabited a tem- perate or cold climate, but not a land long covered with snow; for our cattle, as we have seen in the chapter on Horses, apparently have not the instinct of scraping away the snow to get at the herbage beneath. No one 45 See W. R. Wilde, ut supra; and Mr. Blyth, in Proc. Irish Academy,' March 5th, 1864. 46 Laing's Tour in Norway,' p. 110. 47 Isid. Geoffroy St. Hilaire, Hist. Nat. Gén.,' tom. iii. p. 96. 48 Idem, tom. iii. pp. 82, 91. 106 CHAP. III CATTLE. could behold the magnificent wild bulls on the bleak Falkland Islands in the southern hemisphere, and doubt about the climate being admirably suited to them. Azara has remarked that in the temperate regions of La Plata the cows conceive when two years old, whilst in the much hotter country of Paraguay they do not con- ceive till three years old; “from which fact," as he adds, “one may conclude that cattle do not succeed so well in warm countries."' 49 The above-named three fossil forms of Bos have been ranked by nearly all palæontologists as distinct species; and it would not be reasonable to change their denomina- tion simply because they are now found to be the parents of several domesticated races. But what is of most im- portance for us, as showing that they deserve to be rank- ed as species, is that they co-existed in different parts of Europe during the same period, and yet kept distinct. Their domesticated descendants, on the other hand, if not separated, cross with the utmost freedom and become commingled. The several European breeds have so often been crossed, both intentionally and unintentionally, that, if any sterility ensued from such unions, it would certain- ly have been detected. As zebus inhabit a distant and much hotter region, and as they differ in so many charac- ters from our European cattle, I have taken pains to ascertain whether the two forms are fertile when crossed. The late Lord Powis imported some zebus and crossed them with common cattle in Shropshire; and I was as- sured by his steward that the cross-bred animals were perfectly fertile with both parent-stocks. Mr. Blyth in- forms me that in India hybrids, with various proportions of either blood, are quite fertile; and this can hardly fail to be known, for in some districts so the two species are allowed to breed freely together. Most of the cattle 49 Quadrupèdes du Paraguay,' tom. ii. p. 360. 60 Walther, 'Das Rindvieb,' 1817, s. 80. CHAP. IIL 107 CROSSED SPECIES FERTILE. which were first introduced into Tasmania were humped, so that at one time thousands of crossed animals existed there; and Mr. B. O'Neile Wilson, M.A., writes to me from Tasmania that he has never heard of any sterility having been observed. He himself formerly possessed a herd of such crossed cattle, and all were perfectly fertile; so much so, that he cannot remember even a single cow failing to calve. These several facts afford an important confirmation of the Pallasian doctrine that the descen- dants of species which when first domesticated would if crossed probably have been in some degree sterile, become perfectly fertile after a long course of domestication. In a future chapter we shall see that this doctrine throws much light on the difficult subject of Hybridism. I have alluded to the cattle in Chillingham Park, which, according to Rütimeyer, have been very little changed from the Bos primigenius type. This park is so ancient that it is referred to in a record of the year 1220. The cattle in their instincts and habits are truly wild. They are white, with the inside of the ears reddish brown, eyes rimmed with black, muzzles brown, hoofs black, and horns white tipped with black. Within a period of thirty-three years about a dozen calves were born with “brown and blue spots upon the cheeks or necks; but these, together with any defective animals, were always destroyed. “Ac- cording to Bewick, about the year 1770 some calves ap- peared with black ears; but these were also destroyed by the keeper, and black ears have not since reappeared. The wild white cattle in the Duke of Hamilton's park, where I have heard of the birth of a black calf, are said by Lord Tankerville to be inferior to those at Chilling- ham. The cattle kept until the year 1780 by the Duke of Queensberry, but now extinct, had their ears, muzzle, and orbits of the eyes black. Those which have existed from time immemorial at Chartley closely resemble the cattle at Chillingham, but are larger, “ with some small differ- ence in the colour of the ears.” “They frequently tend to 108 CHAP. III. CATTLE. become entirely black; and a singular superstition pre- vails in the vicinity that, when a black calf is born, some calamity impends over the noble house of Ferrers. All the black calves are destroyed." The cattle at Burton Constable in Yorkshire, now extinct, had ears, muzzle, and the tip of the tail black. Those at Gisburne, also in Yorkshire, are said by Bewick to have been sometimes without dark muzzles, with the inside alone of the ears brown; and they are elsewhere said to have been low in stature and hornless. 51 The several above-specified differences in the park-cat- tle, slight though they be, are worth recording, as they show that animals living nearly in a state of nature, and exposed to nearly uniform conditions, if not allowed to roam freely and to cross with other herds, do not keep as uniform as truly wild animals. For the preservation of a uniform character, even within the same park, a certain degree of selection—that is, the destruction of the dark- coloured calves—is apparently necessary. The cattle in all the parks are white; but, from the oc- casional appearance of dark-coloured calves, it is ex- tremely doubtful whether the aboriginal Bos primigenius was wbite. The following facts, however, show that there is a strong, though not invariable, tendency in wild or escaped cattle, under widely different conditions of life, to become white with coloured ears. If the old writers Boethius and Leslie 52 can be trusted, the wild cattle of Scotland were white and furnished with a great mane; but the colour of their ears is not mentioned. 51 I am much indebted to the present Earl of Tankerville for information about his wild cattle; and for the skull which was sent to Prof. Rütimeyer. The fullest account of the Chillingham cattle is given by Mr. Hindmarsh, together with a let- ter by the late Lord Tankerville, in 'An- nals and Mag. of Nat. Hist.,' vol. ii., 1839, p. 274. See Bewick, 'Quadrupeds, 2nd edit., 1791, p. 35, note. With respect to those of the Duke of Queensberry, see Pennant's Tour in Scotland,'p. 109. For those of Chartley, see Low's Domesti- cated Animals of Britain,' 1845, p. 238. For those of Gisburne, see Bewick's Quadrupeds, and Encyclop. of Rural Sports,' p. 101. 52 Boethius was born in 1470; 'An- nals and Mag. of Nat. Hist.,' vol. ii., 1839, p. 281; and vol, iv., 1849, p. 424. CHAP. III 109 PARK-CATTLE. The primæval forest formerly extended across the whole country from Chillingham to Hamilton, and Sir Walter Scott used to maintain that the cattle still preserved in these two parks, at the two extremities of the forest, were remnants of its original inhabitants; and this view certainly seems probable. In Wales,6during the tenth century, some of the cattle are described as being white with red ears. Four hundred cattle thus coloured were sent to King John; and an early record speaks of a hun- dred cattle with red ears having been demanded as a compensation for some offence, but, if the cattle were of a dark or black colour, one hundred and fifty were to be presented. The black cattle of North Wales appa- rently belong, as we have seen, to the small longifrons type: and as the alternative was offered of either 150 dark cattle, or 100 white cattle with red ears, we may presume that the latter were the larger beasts, and pro- bably belonged to the primigenius type. Youаtt has remarked that at the present day, whenever cattle of the short-horn breed are white, the extremities of their ears are more or less tinged with red. The cattle which have run wild on the Pampas, in Texas, and in two parts of Africa, have become of nearly uniform dark brownish-red.54 On the Ladrone Islands, in the Pacific Ocean, immense herds of cattle, which were wild in the year 1741, are described as “milk-white, except their ears, which are generally black.” 65 The Falkland Islands, situated far south, with all the con- ditions of life as different as it is possible to conceive from those of the Ladrones, offer a more interesting case. Cattle have run wild there during eighty or ninety years; 53 Youatton Cattle, 1834, p. 48: See also p. 242, on short-horn cattle. Bell, in his British Quadrupeds,' p. 423, states that, after long attending to the subject, he has found that white cattle invariably have coloured ears. 54 Azara, 'Des Quadrupèdes du Para- guay,' tom. ii. p. 361. Azara quotes Buf- fon for the feral cattle of Africa. For Texas, see 'Times,' Feb. 18th, 1846. 65 Anson's Voyage. See Kerr and Porter's Collection,' vol. xii. p. 103. 110 CHAP. III. CATTLE. and in the southern districts the animals are mostly white, with their feet, or whole heads, or only their ears black; but my informant, Admiral Sulivan, who long resided on these islands, does not believe that they are ever purely white. So that in these two archipelagos we see that the cattle tend to become white with coloured ears. In other parts of the Falkland Islands other co- lours prevail: near Port Pleasant brown is the common tint'; round Mount Usborne, about half the animals in some of the herds were lead or mouse-coloured, which elsewhere is an unusual tint. These latter cattle, though generally inhabiting high land, breed about a month earlier than the other cattle; and this circumstance would aid in keeping them distinct and in perpetuating this pe- culiar colour. It is worth recalling to mind that blue or lead-coloured marks have occasionally appeared on the white cattle of Chillingham. So plainly different were the colours of the wild herds in different parts of the Falkland Islands, that in hunting them, as Admiral Suli- van informs me, white spots in one district, and dark spots in another district, were always looked out for on the distant hills. In the intermediate districts interme- diate colours prevailed. Whatever the cause may be, this tendency in the wild cattle of the Falkland Islands, which are all descended from a few brought from La Plata, to break up into herds of three different colours, is an interesting fact. Returning to the several British breeds, the conspicuous difference in general appearance between Short-horns, Long-horns (now rarely seen), Herefords, Highland cattle, Alderneys, &c., must be familiar to every one. A large part of the difference, no doubt, may be due to descent from primordially distinct species; but we may feel sure that there has been in addition a considerable amount of variation. Even during the Neolithic period, 66 See also Mr. Mackinnon's pamphlet on the Falkland Islands, p. 24. CHAP. III. 111 THEIR VARIATION. the domestic cattle were not actually identical with the aboriginal species. Within recent times most of the breeds have been modified by careful and methodical selection. How strongly the characters thus acquired are inherited, may be inferred from the prices realised by the improved breeds; even at the first sale of Col- ling's Short-horns, eleven bulls reached an average of 2141., and lately Short-horn bulls have been sold for a thousand guineas, and have been exported to all quarters of the world. Some constitutional differences may be here noticed. The Short-horns arrive at maturity far earlier than the wilder breeds, such as those of Wales or the Highlands. This fact has been shown in an interesting manner by Mr. Simonds,67 who has given a table of the average period of their dentition, which proves that there is a difference of no less than six months in the appearance of the per- manent incisors. The period of gestation, from observa- tions made by Tessier on 1131 cows, varies to the extent of eighty-one days; and what is more interesting, M. Lefour affirms “ that the period of gestation is longer in the large German cattle than in the smaller breeds.” 58 With respect to the period of conception, it seems certain that Alderney and Zetland cows often become pregnant earlier than other breeds. Lastly, as four fully-deve- loped mammæ is a generic character in the genus Bos, it is worth notice that with our domestic cows the two rudimentary mammæ often become fairly well developed and yield milk. As numerous breeds are generally found only in long- civilized countries, it may be well to show that in some countries inhabited by barbarous races, who are frequently 60 57 The Age of the Ox, Sheep, Pig,' &c., by Prof. James Simonds, published by order of the Royal Agricult. Soc. 68 Ann. Agricult. France,' April, 1887, as quoted in The Veterinary,' vol. xii. p. 725. I quote Tessier's obser- vations from Youаtt on Cattle, p. 527. 59 The Veterinary,' vol. viii. p. 681, and vol. x. p. 268. Low's Domest. Animals of Great Britain,' p. 297. 60 Mr. Ogilby, in Proc. Zoolog. Soc.,' 1836, p. 138, and 1810, p. 4. 112 CHAP. III. CATTLE. at war with each other and therefore have little free com- munication, several distinct breeds of cattle now exist or formerly existed. At the Cape of Good Hope Leguat observed, in the year 1720, three kinds. At the present day various travellers have noticed the differences in the breeds in Southern Africa. Sir Andrew Smith several years ago remarked to me that the cattle possessed by the different tribes of Caffres, though living near each other under the same latitude and in the same kind of country, yet differed, and he expressed much surprise at the fact. Mr. Andersson has described 62 the Damara, Bechuana, and Namaqua cattle; and he informs me in a letter that the cattle north of Lake Ngami are likewise different, as Mr. Galton has heard is the case with the cattle of Benguela. The Namaqua cattle in size and shape nearly resemble European cattle, and have short stout horns and large hoofs. The Damara cattle are very peculiar, being big-boned, with slender legs and small hard feet; their tails are adorned with a tuft of long bushy hair nearly touching the ground, and their horns are extraordinarily large. The Bechuana cattle have even larger horns, and there is now a skull in London with the two horns 8 ft. 81 in. long, as measured in a straight line from tip to tip, and no less than 13 ft. 5 in., as measured along their curvature! Mr. Andersson in his letter to me says that, though he will not venture to describe the differences between the breeds belonging to the many different sub-tribes, yet such certainly exist, as shown by the wonderful facility with which the natives discrimi- nate them. That many breeds of cattle have originated through variation, independently of descent from distinct species, we may infer from what we see in South America, where the genus Bos was not endemic, and where the cattle 61 Leguat's Voyage, quoted by Vasey in his Delineations of the Ox-tribe,' p. 182. 62 Travels in South Africa,' pp. 317, 336. CHAP. III. 113 THEIR VARIATION. 63 which now exist in such vast numbers are the descend- ants of a few imported from Spain and Portugal. In Columbia, Roulin describes two peculiar breeds, namely, pelones, with extremely thin and fine hair, and calongos, absolutely naked. According to Castelnau there are two races in Brazil, one like European cattle, the other different, with remarkable horns. In Paraguay, Azara describes a breed which certainly originated in S. America called chivos, “because they have straight ver- tical horns, conical, and very large at the base.” He likewise describes a dwarf race in Corrientes, with short legs and a body larger than usual. Cattle without horns, and others with reversed hair, have also originated in Paraguay. Another monstrous breed, called niatas or natas, of which I saw two small herds on the northern bank of the Plata, is so remarkable as to deserve a fuller descrip- tion. This breed bears the same relation to other breeds, as bull or pug dogs do to other dogs, or as improved pigs, according to H. von Nathusius, do to common pigs. Rütimeyer believes that these cattle belong to the primigenius type. The forehead is very short and broad, with the nasal end of the skull, together with the whole plane of the upper molar-teeth, curved upwards. The lower jaw projects beyond the upper, and has a corresponding upward curvature. It is an interesting fact that an almost similar conformation characterizes, as I have been informed by Dr. Falconer, the extinct and 63 Mém. de l'Institut présent. par not form a distinct race. Prof. Wyman, divers Savans,' tom. vi., 1835, p. 333. of Cambridge, United States, informs me For Brazil, see Comptes Rendus,' June that the common cod-fish presents a 15th, 1846. See Azara, Quadrupèdes similar monstrosity, called by the fisher- du Paraguay,' tom. ii. pp. 359, 361. men the “bulldog cod." Prof. Wyman 64 Schweineschädel,' 1864, s. 104.. also concluded, after making numerous Nathusius states that the form of skull inquiries in La Plata, that the niata characteristic of the niata cattle occa- cattle transmit their peculiarities or form sionally appears in European cattle ; but he is mistaken, as we shall hereafter 65 Ueber Art des Zahmen Europ. Rin- see, in supposing that these cattle do des, 1866. s. 28. a race. 114 CHAP. III. CATTLE. gigantic Sivatherium of India, and is not known in any other ruminant. The upper lip is much drawn back, the nostrils are seated high up and are widely open, the eyes project outwards, and the horns are large. In walking the head is carried low, and the neck is short. The hind legs appear to be longer, compared with the front legs, than is usual. The exposed incisor teeth, the short head and upturned nostrils, give these cattle the most ludi- crous, self-confident air of defiance. The skull which I presented to the College of Surgeons has been thus de- scribed by Professor Owen : 66“ It is remarkable from the stunted development of the nasals, premaxillaries, and fore-part of the lower jaw, which is unusually curved up- wards to come into contact with the premaxillaries. The nasal bones are about one-third the ordinary length, but retain almost their normal breadth. The triangular vacui- ty is left between them, the frontal and lachrymal, which latter bone articulates with the premaxillary, and thus excludes the maxillary from any junction with the nasal.” So that even the connexion of some of the bones is chang- ed. Other differences might be added: thus the plane of the condyles is somewhat modified, and the terminal edge of the premaxillaries forms an arch. In fact, on compari- son with the skull of a common ox, scarcely a single bone presents the same exact shape, and the whole skull has a wonderfully different appearance. The first brief published notice of this race was by Azara, between the years 1783-96; but Don F. Muniz, of Luxan, who has kindly collected information for me, states that about 1760 these cattle were kept as curiosi- ties near Buenos Ayres. Their origin is not positively known, but they must have originated subsequently to the year 1552, when cattle were first introduced. Signor Muniz informs me that the breed is believed to have ori- 86 Descriptive Cat. of Ost. Collect. of College of Surgeons,' 1553 p. 624. Vasey, in his "Delineations of the Ox-tribe! has given a figure of this skull; and I sent a photograph of it to Prof. Rüti- meyer. CHAP. III. 115 CAUSES OF VARIATION. ginated with the Indians southward of the Plata. Even to this day those reared near the Plata show their less civilized nature in being fiercer than common cattle, and in the cow, if visited too often, easily deserting her first calf. The breed is very true, and a niata bull and cow invariably produce niata calves. The breed has already lasted at least a century. A niata bull crossed with a common cow, and the reverse cross, yield offspring hav- ing an intermediate character, but with the niata cha- racter strongly displayed. According to Signor Muniz, there is the clearest evidence, contrary to the common belief of agriculturists in analogous cases, that the niata cow when crossed with a common bull transmits her pe- culiarities more strongly than does the niata bull when crossed with a common cow. When the pasture is toler- ably long, these cattle feed as well as common cattle with their tongue and palate; but during the great droughts, when so many animals perish on the Pampas, the niata breed lies under a great disadvantage, and would, if not attended to become extinct; for the common cattle, like horses, are able just to keep alive by browsing on the twigs of trees and on reeds with their lips: this the nia- tas cannot so well do, as their lips do not join, and hence they are found to perish before the common cattle. This strikes me as a good illustration of how little we are able to judge from the ordinary habits of an animal, on what circumstances, occurring only at long intervals of time, its rarity or extinction may depend. It shows us, also, how natural selection would have determined the rejec- tion of the niata modification had it arisen in a state of nature. Having described the semi-monstrous niata breed, I may allude to a white bull, said to have been brought from Africa, which was exhibited in London in 1829, and which has been well figured by Mr. Harvey. It had a 67 Loudon's Magazine of Nat. Hist.,' vol. i. 1929, p. 113. Separate figures are given of the animal, its hoofs, eye, and dewlap. 116 CEAP. III. CATTLE. hump, and was furnished with a mane. The dewlap was peculiar, being divided between its forelegs into parallel divisions. Its lateral hoofs were annually shed, and grew to the length of five or six inches. The eye was very peculiar, being remarkably prominent, and “resem- bled a cup and ball, thus enabling the animal to see on all sides with equal ease; the pupil was small and oval, or rather a parallelogram with the ends cut off, and ly- ing transversely across the ball.” A new and strange breed might probably have been formed by careful breed- ing and selection from this animal. I have often speculated on the probable causes through which each separate district in Great Britain came to pos- sess in former times its own peculiar breed of cattle; and the question is, perhaps, even more perplexing in the case of Southern Africa. We now know that the differences may be in part attributed to descent from distinct spe- cies; but this will not suffice. Have the slight differ- ences in climate and in the nature of the pasture, in the different districts of Britain, directly induced correspond- ing differences in the cattle? We have seen that the semi-wild cattle in the several British parks are not iden- tical in colouring or size, and that some degree of selection has been requisite to keep them true. It is almost cer- tain that abundant food given during many generations directly affects the size of a breed. That climate di- rectly affects the thickness of the skin and the hair is likewise certain; thus Roulin asserts 69 that the hides of the feral cattle on the hot Llanos "are always much less heavy than those of the cattle raised on the high plat- form of Bogota; and that these hides yield in weight and in thickness of hair to those of the cattle which have run wild on the lofty Paramos." The same difference has been observed in the hides of the cattle reared on the 68 88 Low, 'Domesticated Animals of the British Isles,' p. 264. 69 Mém. de l'Institut présent. par di- vers Savans,' tom. vi., 1835, p. 382. CHAP. III. 117 CAUSES OF VARIATION. . bleak Falkland Islands and on the temperate Pampas. Low has remarked 10 that the cattle which inhabit the more humid parts of Britain have longer hair and thicker skins than other British cattle; and the hair and horns are so closely related to each other, that, as we shall see in a future chapter, they are apt to vary together; thus climate might indirectly affect, through the skin, the form and size of the horns. When we compare highly improved stall-fed cattle with the wilder breeds, or com- pare mountain and lowland breeds, we cannot doubt that an active life, leading to the free use of the limbs and lungs, affects the shape and proportions of the whole body. It is probable that some breeds, such as the semi- monstrous niata cattle, and some peculiarities, such as being hornless, &c., have appeared suddenly from what we may call a spontaneous variation ; but even in this case a rude kind of selection is necessary, and the ani- mals thus characterized must be at least partially sepa- rated from others. This degree of care, however, has sometimes been taken even in little-civilized districts, where we should least have expected it, as in the case of the niata, chivo, and hornless cattle in S. America. That methodical selection has done wonders within a recent period in modifying our cattle, no one doubts. During the process of methodical selection it has occa- sionally happened that deviations of structure, more strongly pronounced than mere individual differences, yet by no means deserving to be called monstrosities, have been taken advantage of: thus the famous Long- horn Bull, Shakespeare, though of the pure Canley stock, "scarcely inherited a single point of the long-horned breed, his horns excepted ; 7 yet in the hands of Mr. Fow- ler, this bull greatly improved his race. We have also reason to believe that selection, carried on so far uncon- 70 Idem, pp. 304, 368, &c. 71 Youаtt on Cattle, p. 193. A full ac- count of this bull is taken from Mar- shall. 118 CHAP. III. CATTLE. sciously that there was at no one time any distinct intention to improve or change the breed, has in the course of time modified most of our cattle; for by this process, aided by more abundant food, all the lowland British breeds have increased greatly in size and in early maturity since the reign of Henry VII." It should never be forgotten that many animals have to be annually slaughtered; so that each owner must determine which shall be killed and which preserved for breeding. In every district, as You- att has remarked, there is a prejudice in favor of the na- tive breed; so that animals possessing qualities, whatever they may be, which are most valued in each district, will be oftenest preserved ; and this unmethodical selection assuredly will in the long run affect the character of the whole breed. But it may be asked, can this rude kind of selection have been practised by barbarians such as those of southern Africa ? In a future chapter on Selection we shall see that this has certainly occurred to some extent. Therefore, looking to the origin of the many breeds of cattle which formerly inhabited the several districts of Britain, I conclude that, although slight differences in the nature of the climate, food, &c., as well as changed habits of life, aided by correlation of growth, and the occasional appearance from unknown causes of considerable devia- tions of structure, have all probably played their parts; yet that the occasional preservation in each district of those individual animals which were most valued by each own- er has perhaps been even more effective in the production of the several British breeds. As soon as two or more breeds had once been formed in any district, or when new breeds descended from distinct species were intro- duced, their crossing, especially if aided by some selec- tion, will have multiplied the number and modified the characters of the older breeds. 72 Youаtt on Cattle, p. 116. Lord Spencer has written on this same subject. CHAP. III. 119 SHEEP. THEIR VARIATION. SHEEP. I SHALL treat this subject briefly. Most authors look at our domestic sheep as descended from several distinct species; but how many still exist is doubtful. Mr. Blyth believes that there are in the whole world fourteen spe- cies, one of which, the Corsican moufflon, he concludes (as I am informed by him) to be the parent of the small- er, short-tailed breeds, with crescent-shaped horns, such as the old Highland sheep. The larger, long-tailed breeds, having horns with a double flexure, such as the Dorsets, merinos, &c., he believes to be descended from an un- known and extinct species. M. Gervais makes six species of Ovis ;* but concludes that our domestic sheep form a distinct genus, now completely extinct. A German na- turalist74 believes that our sheep descend from ten abo- riginally distinct species, of which only one is still living in a wild state! Another ingenious observer, though not a naturalist, with a bold defiance of everything known on geographical distribution, infers that the sheep of Great Britain alone are the descendants of eleven en- demic British forms! Under such a hopeless state of doubt it would be useless for my purpose to give a de- tailed account of the several breeds; but a few remarks may be added. Sheep have been domesticated from a very ancient pe- riod. Rütimeyer 78 found in the Swiss lake-dwellings the remains of a small breed, with thin and tall legs, and with horns like those of a goat: this race differs somewhat from any one now known. Almost every country has its 73 Blyth on the genus Ovis, in An- 74 Dr. L. Fitzinger, 'Ueber die Racen nals and Mag. of Nat. History,' vol. vii., des Zahmen Schafes,' 1860, s. 86. 1841, p. 261 : with respect to the parent- 75 J. Anderson, Recreations in Agri- age of the breeds, see Mr. Blyth's excel- culture and Natural History,' vol. ii. p. lent articles in 'Land and Water,' 1867, 164. pp. 134, 156. Gervais, Hist. Nat. des 78 Pfahlbauten,' s. 127, 193. Mammifères,' 1855, tom. ii, p. 191. 120 CHAP. III. SHEEP. 78 own peculiar breed; and many countries have many breeds differing greatly from each other. One of the most strongly marked races is an Eastern one with a long tail, including, according to Pallas, twenty vertebræ, and so loaded with fat, that, from being esteemed a delicacy, it is sometimes placed on a truck which is dragged about by the living animal. These sheep, though ranked by Fitzinger as a distinct aboriginal form, seem to bear in their drooping ears the stamp of long domestication. This is likewise the case with those sheep which have two great masses of fat on the rump, with the tail in a rudi- mentary condition. The Angola variety of the long-tailed race has curious masses of fat on the back of the head and beneath the jaws." Mr. Hodgson in an admirable paper on the sheep of the Himalaya infers from the distribution of the several races, “ that this caudal augmentation in most of its phases is an instance of degeneracy in these pre-eminently Alpine animals.” The horns present an endless diversity in character; being, especially in the female sex, not rarely absent, or, on the other hand, amounting to four or even eight in number. The horns, when numerous, arise from a crest on the frontal bone, which is elevated in a peculiar manner. It is remarkable that multiplicity of horns “is generally accompanied by great length and coarseness of the fleece.” 79 This corre- lation, however, is not invariable; for I am informed by Mr. D. Forbes, that the Spanish sheep in Chile resemble, in fleece and in all other characters, their parent merino- race, except that instead of a pair they generally bear four horns. The existence of a pair of mamma is a generic character in the genus Ovis as well as in several allied forms; nevertheless, as Mr. Hodgson has remarked, “this character is not absolutely constant even among the true and proper sheep: for I have more than once met with 77 Youаtt on Sheep, p. 120. 78 Journal of the Asiatic Soc. of Ben. gal,' vol. xvi. pp. 1007, 1016. 79 Youаtt on Sheep, pp. 142-169. CHAP. III. 121 THEIR VARIATION. Cágias (a sub-Himalayan domestic race) possessed of four teats.” 80 This case is the more remarkable as, when any part or organ is present in reduced number in comparison with the same part in allied groups, it usually is subject to little variation. The presence of interdigital pits has likewise been considered as a generic distinction in sheep; but Isidore Geoffroy 81 has shown that these pits or pouch- es are absent in some breeds. In sheep there is a strong tendency for characters, which have apparently been acquired under domestica- tion, to become attached either exclusively to the male sex, or to be more highly developed in this than in the other sex. Thus in many breeds the horns are deficient in the ewe, though this likewise occurs occasionally with the female of the wild musmon. In the rams of the Wallachian breed “the horns spring almost perpendicu- larly from the frontal bone, and then take a beautiful spiral form; in the ewes they protrude nearly at right angles from the head, and then become twisted in a singular manner. Mr. Hodgson states that the extra- ordinarily arched nose or chaffron, which is so highly developed in several foreign breeds, is characteristic of the ram alone, and apparently is the result of domestica- I hear from Mr. Blyth that the accumulation of fat in the fat-tailed sheep of the plains of India is greater in the male than in the female; and Fitzinger 84 remarks that the mane in the African maned race is far more developed in the ram than in the ewe. Different races of sheep, like cattle, present constitu- tional differences. Thus the improved breeds arrive at maturity at an early age, as has been well shown by Mr. Simonds through their early average period of dentition. The several races have become adapted to different kinds tion.83 80 Journal Asiat. Soc. of Bengal,' vol. xvi., 1847, p. 1015. 81 Hist. Nat. Gén.,' tom. iii. p. 435. 82 Youаtt on Sheep, p. 138. 83 Journal Asiat. Soc. of Bengal.' vol. xvi., 1847, pp. 1015, 1016. 84 Racen des Zahmen Schafes,' s. 77. 3 6 122 CHAP. III. SHEEP. of pasture and climate: for instance, no one can rear Leicester sheep on mountainous regions, where Cheviots flourish. As Youаtt has remarked, “in all the different districts of Great Britain we find various breeds of sheep beautifully adapted to the locality which they occupy. No one knows their origin; they are indigenous to the soil, climate, pasturage, and the locality on which they graze; they seem to have been formed for it and by it." 85 Marshall relates 86 that a flock of heavy Lincolnshire and light Norfolk sheep which had been bred together in a large sheep-walk, part of which was low, rich, and moist, and another part high and dry, with benty grass, when turned out, regularly separated from each other; the heavy sheep drawing off to the rich soil, and the lighter sheep to their own soil; so that “whilst there was plenty of grass the two breeds kept themselves as distinct as rooks and pigeons.” Numerous sheep from various parts of the world have been brought during a long course of years to the Zoological Gardens of London; but as Youatt, who attended the animals as a veterinary surgeon, remarks, “few or none die of the rot, but they are phthisical; not one of them from a torrid climate lasts out the second year, and when they die their lungs are tuberculated.” B7 Even in certain parts of England it has been found impossible to keep certain breeds of sheep; thus on a farm on the banks of the Ouse, the Leicester sheep were so rapidly destroyed by pleuritis 88. that the owner could not keep them ; the coarser-skinned sheep never being affected. The period of gestation was formerly thought to be so analterable à character, that a supposed difference be- tween the wolf and the dog in this respect was esteemed 85 Rural Economy of Norfolk,' vol. ii. p. 136. 86 Youаtt on Sheep, p. 312. On same subject, see excellent remarks in 'Gar- dner's Chronicle,' 1858, p. 368. For ex- periments in crossing Cheviot sheep with Leicesters, see Youatt, p. 325. 87 Youаtt on Sheep, note, p. 491. 88 The Veterinary,' vol. X., p. 217. CHAP. III. 123 THEIR VARIATION. a sure sign of specific distinction; but we have seen that the period is shorter in the improved breeds of the pig, and in the larger breeds of the ox, than in other breeds of these two animals. And now we know, on the excel- Jent authority of Hermann von Nathusius,eº that Merino and Southdown sheep, when both have long been kept under exactly the same conditions, differ in their average period of gestation, as is seen in the following Table : 2 Merinos Southdowns Half-bred Merinos and Southdowns & blood of Southdown } 용 ​150-3 days. 144.2 146.3 145.5 144.2 > In this graduated difference, in these cross-bred animals having different proportions of Southdown blood, we see how strictly the two periods of gestation have been trans- mitted. Nathusius remarks that, as Southdowns grow with remarkable rapidity after birth, it is not surprising that their fætal development should have been shortened. It is of course possible that the difference in these two breeds may be due to their descent from distinct parent- species; but as the early maturity of the Southdowns has long been carefully attended to by breeders, the differ- ence is more probably the result of such attention. Lastly, the fecundity of the several breeds differs much; some generally producing twins or even triplets at a birth, of which fact the curious Shangai sheep (with their trunca- ted and rudimentary ears, and great Roman noses), lately exhibited in the Zoological Gardens, offer a remarkable instance. Sheep are perhaps more readily affected by the direct action of the conditions of life to which they have been exposed than almost any other domestic animal. AC- cording to Pallas, and more recently according to Erman, 89 A translation of his paper is given in 'Bull. Soc. Imp. d'Acclimat.,' tom. ix., 1862, p. 723. 124 CHAP. III. SHEEP. the fat-tailed Kirghisian sheep, when bred for a few gen- erations in Russia, degenerate, and the mass of fat dwin- dles away,“ the scanty and bitter herbage of the steppes seems so essential to their development.” Pallas makes an analogous statement with respect to one of the Crimean breeds. Burnes states that the Karakool breed, which produces a fine, curled, black, and valuable fleece, when removed from its own canton near Bokhara to Persia, or to other quarters, loses its peculiar fleece. In all such cases, however, it may be that a change of any kind in the con- ditions of life causes variability and consequent loss of character, and not that certain conditions are necessary for the development of certain characters. Great heat, however, seems to act directly on the fleece: several accounts have been published of the change which sheep imported from Europe undergo in the West Indies. Dr. Nicholson of Antigua informs me that, after the third generation, the wool disappears from the whole body, except over the loins; and the animal then appears like a goat with a dirty door-mat on its back. A similar change is said to take place on the west coast of Africa.°1 On the other hand, many wool-bearing sheep live on the hot plains of India. Roulin asserts that in the lower and heated valleys of the Cordillera, if the lambs are sheared as soon as the wool has grown to a certain thickness, all goes on afterwards as usual; but if not sheared, the wool detaches itself in flakes, and short shining hair like that on a goat is produced ever afterwards. This curious re- sult seems merely to be an exaggerated tendency natural 90 Erman's Travels in Siberia' (Eng. trans.), vol. i. p. 228. For Pallas on the fat-tailed sheep, I quote from Anderson's account of the Sheep of Russia,' 1794, p. 34. With respect to the Crimean sheep, see Pallas' Travels' (Eng. trans.), vol. ii. p. 454. For the Karakool sheep, see Burnes' Travels in Bokhara,' vol. iii. p. 151. 91 See Report of the Directors of the Sierra Leone Company, as quoted in White's Gradation of Man,' p. 95. With respect to the change which sheep un- dergo in the West Indies, see also Dr. Davy, in 'Edin. New. Phil. Journal,'Jan. 1852. For the statement made by Roulin, see Mém. de l'Institut présent. par di- vers Savans,' tom. vi., 1835, p. 347. CHAP III. 125 CAUSES OF VARIATION. to the Merino breed, for as a great authority, namely, Lord Somerville, remarks," the wool of our Merino sheep after shear-time is hard and coarse to such a degree as to render it almost impossible to suppose that the same ani- mal could bear wool so opposite in quality, compared to that which has been clipped from it: as the cold weather advances, the fleeces recover their soft quality.” As in sheep of all breeds the fleece naturally consists of longer and coarser hair covering shorter and softer wool, the change which it often undergoes in hot climates is proba- bly merely a case of unequal development; for even with those sheep which like goats are covered with hair, a small quantity of underlying wool may always be found.º2 In the wild mountain-sheep (Ovis montana) of North America there is an annual analogous change of coat; “the wool begins to drop out in early spring, leaving in its place a coat of hair resembling that of the elk, a . change of pelage quite different in character from the or- dinary thickening of the coat or hair, common to all furred animals in winter,-for instance, in the horse, the cow, &c., which shed their winter coat in the spring." A slight difference in climate or pasture sometimes slightly affects the fleece, as has been observed even in different districts in England, and as is well shown by the great softness of the wool brought from Southern Australia. But it should be observed, as Youatt repeat- edly insists, that the tendency to change may generally be counteracted by careful selection. M. Lasterye, after discussing this subject, sums up as follows: follows: “The preser- vation of the Merino race in its utmost purity at the Cape of Good Hope, in the marshes of Holland, and under the rigorous climate of Sweden, furnishes an additional sup- 7 93 92 Youаtt on Sheep, p. 69, where Lord Somerville is quoted. See p. 117, on the presence of wool under the hair. With respect to the fleeces of Australian sheep, p. 185. On selection counteracting any tendency to change, see pp. 70, 117, 120, 168. 93 Audubon and Bachman,' The Quad- rupeds of North America,' 1846, vol. v. p. 365. 126 CHAP. III. SHEEP. 94 port of this my unalterable principle, that fine-wooled sheep may be kept wherever industrious men and intelli- gent breeders exist.' That methodical selection has effected great changes in several breeds of sheep no one, who knows anything on the subject, entertains a doubt. The case of the South- downs, as improved by Ellman, offers perhaps the most striking instance. Unconscious or occasional selection has likewise slowly produced a great effect, as we shall see in the chapters on Selection. That crossing has large- ly modified some breeds, no one who will study what has been written on this subject-for instance, Mr. Spooner's paper-will dispute; but to produce uniformity in a crossed breed, careful selection and “rigorous weeding," as this author expresses it, are indispensable.' In some few instances new breeds have suddenly ori- ginated; thus, in 1791, a ram-lamb was born in Massachu- setts, having short crooked legs and a long back, like a turnspit-dog. From this one lamb the otter or ancon semi-monstrous breed was raised; as these sheep could not leap over the fences, it was thought that they would be valuable; but they have been supplanted by merinos, and thus exterminated. These sheep are remarkable from transmitting their character so truly that Colonel Hum- phreys never heard of “but one questionable case of an ancon ram and ewe not producing ancon offspring. When they are crossed with other breeds the offspring, with rare exceptions, instead of being intermediate in character, perfectly resemble either parent; and this has occurred even in the case of twins. Lastly, “the ancons have been observed to keep together, separating them- selves from the rest of the flock when put into enclosures with other sheep.” A more interesting case has been recorded in the Re- 94 Journal of R. Agricult. Soc of Eng- land,' vol. xx., part ii. W. C. Spooner on Cross-Breeding. 95 Philosoph. Transactions,' London, 1813, p. 88. CHAP. III. 127 GOATS. port of the Juries for the Great Exhibition (1851), namely, the production of a merino ram-lamb on the Mauchamp farm, in 1828, which was remarkable for its long, smooth, straight, and silky wool. By the year 1833 M. Graux had raised rams enough to serve his whole flock, and after a few more years he was able to sell stock of his new breed. So peculiar and valuable is the wool, that it sells at 25 per cent. above the best merino wool: even the fleeces of half-bred animals are valuable, and are known in France as the "Mauchamp-merino." It is interesting, as showing how generally any marked deviation of struc- ture is accompanied by other deviations, that the first ram and his immediate offspring were of small size, with large heads, long necks, narrow chests, and long flanks; but these blemishes were removed by judicious crosses and selection. The long smooth wool was also correlated with smooth horns; and as horns and hair are homolo- gous structures, we can understand the meaning of this correlation. If the Mauchamp and ancon breeds had originated a century or two ago, we should have had no record of their birth; and many a naturalist would no doubt have insisted, especially in the case of the Mau- champ race, that they had each descended from, or been crossed with, some unknown aboriginal form. GOATS. FROM the recent researches of M. Brandt, most natural- ists now believe that all our goats are descended from the Capra ægagrus of the mountains of Asia, possibly mingled with the allied Indian species C. Falconeri of India.98 In Switzerland, during the early Stone period, the domestic goat was commoner than the sheep; and 96 Isidore Geoffroy St. Hilaire, Hist. Nat. Générale,' tom. iii. p. 87. Mr. Blyth ('Land and Water, 1867, p. 37) has arrived at a similar conclusion, but he thinks that certain Eastern races may perhaps be in part descended from the Asiatic markhor. 128 CHAP. III. GOATS. this very ancient race differed in no respect from that now common in Switzerland. At the present time, the many races found in several parts of the world differ greatly from each other; nevertheless, as far as they have been tried, they are all quite fertile when crossed. So numerous are the breeds, that Mr. G. Clark a has described eight distinct kinds imported into the one island of Mauritius. The ears of one kind were enor- mously developed, being, as measured by Mr. Clark, no less than 19 inches in length and 4 inches in breadth. As with cattle, the mamme of those breeds which are regularly milked become greatly developed; and, as Mr. Clark remarks, “it is not rare to see their teats touching the ground." The following cases are worth notice as presenting unusual points of variation. According to Godron,100 the mamme differ greatly in shape in different breeds, being elongated in the common goat, hemisphe- rical in the Angora race, and bilobed and divergent in the goats of Syria and Nubia. According to this same author, the males of certain breeds have lost their usual offensive odour. In one of the Indian breeds the males and females have horns of widely-different shapes ; in some breeds the females are destitute of horns. 102 The presence of interdigital pits or glands on all four feet has been thought to characterise the genus Ovis, and their absence to be characteristic of the genus Capra ; but Mr. Hodgson has found that they exist in the front 101 and 97 Rütimeyer, Pfahlbauten,' s. 127. 98 Godron, De l'Espèce,' tom. i. p. 402. 99 Annals and Mag. of Nat. History, vol. ii. (2nd series), 1848, p. 363. 100 De l'Espèce,' tom. i. p. 406. Mr. Clark also refers to differences in the shape of the mammæ. Godron states that in the Nubian race the scrotum is divided into two lobes; and Mr. Clark gives a ludicrous proof of this fact, for he saw in the Mauritius a male goat of the Muscat breed purchased at a high price for a female in full milk. These differences in the scrotum are probably not due to descent from distinct species; for Mr. Clark states that this part varies much in form. 101 Mr. Clark, 'Annals and Mag. of Nat. Hist.,' vol. ii. (2nd series), 1848, P. 361. 102 Desmarest, 'Encyclop. Méthod. Mammalogie,' p. 450. CHAP. III. 129 GOATS. 103 feet of the majority of Himalayan goats." Mr. Hodg- son measured the intestines in two goats of the Dúgú race, and he found that the proportional length of the great and small intestines differed considerably. In one of these goats the cæcum was thirteen inches, and in the other no less than thirty-six inches in length! 103 Journal of Asiatic Soc. of Bengal,' vol. xvi., 1847, pp. 1020, 1025. 130 CHAP. IV. DOMESTIC RABBITS. CHAPTER IV. DOMESTIC RABBITS. DOMESTIC RABBITS DESCENDED FROM THE COMMON WILD RAB- BIT — ANCIENT DOMESTICATION - ANCIENT SELECTION - LARGE LOP-EARED RABBITS — VARIOUS BREEDS - FLUCTUATING CIA- RACTERS ORIGIN OF THE HIMALAYAN BREED — CURIOUS CASE OF INHERITANCE — FERAL RABBITS IN JAMAICA AND THE FALK- LAND ISLANDS — PORTO SANTO FERAL RABBITS — OSTEOLOGICAL CHARACTERS - - SKULL- SKULL OF HALF-LOP RABBITS - VARIA- TIONS IN THE SKULL ANALOGOUS TO DIFFERENCES IN DIFFER- ENT SPECIES OF HARES — VERTEBRÆSTERNUM — SCAPULA EFFECTS OF USE AND DISUSE ON THE PROPORTIONS OF THE LIMBS AND BODY - CAPACITY OF THE SKULL AND REDUCED SIZE OF THE BRAIN SUMMARY ON THE MODIFICATIONS OF DOMESTICATED RABBITS. All naturalists, with, as far as I know, a single exception, believe that the several domestic breeds of the rabbit are descended from the common wild species; I shall there- fore describe them more carefully than in the previous cases. Professor Gervais ? states that the true wild rab- bit is smaller than the domestic; its proportions are not absolutely the same; its tail is smaller; its ears are shorter and more thickly clothed with hair; and these characters, without speaking of colour, are so many indications OP- posed to the opinion which unites these animals under the same specific denomination." Few naturalists will agree with this author that such slight differences are sufficient to separate as distinct species the wild and domestic rab- bit. How extraordinary it would be, if close confinement, 1 M. P. Gervais, Hist. Nat. des Mammifères,' tom. i., 1834, p. 288. CHAP. IV. 131 THEIR PARENTAGE. perfect tameness, unnatural food, and careful breeding, all prolonged during many generations, had not produced at least some effect! The tame rabbit has been domesticated from an ancient period. Confucius ranges rabbits among animals worthy to be sacrificed to the gods, and, as he prescribes their multiplication, they were probably at this early period domesticated in China. They are mentioned by several of the classical writers. In 1631 Gervaise Markham writes, “You shall not, as in other cattell, looke to their shape, but to their richnesse, onely elect your buckes, the largest and goodliest conies you can get; and for the richnesse of the skin, that is accounted the richest which hath the equallest mixture of blacke and white haire together, yet the blacke rather shadowing the white; the furre should be thicke, deepe, smooth, and shining; they are of body much fatter and larger, and, when another skin is worth two or three pence, they are worth two shillings. From this full description we see that silver-grey rabbits existed in England at this period; and, what is far more important, we see that the breeding or selection of rabbits was then carefully attended to. Al- drovandi, in 1637, describes, on the authority of several old writers (as Scaliger, in 1557), rabbits of various co- lours, some “like a hare," and he adds that P. Valerianus (who died a very old man in 1558) saw at Verona rabbits four times bigger than ours.? From this fact of the rabbit having been domesticated at an ancient period, we must look to the northern hemi- sphere of the Old World, and to the warmer temperate re- gions alone, for the aboriginal parent-form; for the rabbit cannot live without protection in countries as cold as Swe- den, and, though it has run wild in the tropical island of Jamaica, it has never greatly multiplied there. It now ex- 2 U. Aldrovandi, 'De Quadrupedibus studied the subject in Cottage Garden- digitatis,' 1637, p. 383. For Confucius er,' Jan. 22nd, 1861, p. 250. and G. Markham, see a writer who has 132 CHAP. IV. DOMESTIC RABBITS. ists, and has long existed, in the warmer temperate parts of Europe, for fossil remains have been found in several countries. The domestic rabbit readily becomes feral in these same countries, and when variously coloured kinds are turned out they generally revert to the ordinary grey colour. The wild rabbits, if taken young, can be domes- ticated, though the process is generally very troublesome.” The various domestic races are often crossed, and are be- lieved to be perfectly fertile together, and a perfect gra- dation can be shown to exist from the largest domestic kinds, having enormously developed ears, to the common wild kind. The parent-form must have been a burrowing animal, a habit not common, as far as I can discover, to any other species in the large genus Lepus. Only one wild species is known with certainty to exist in Europe; but the rabbit (if it be a true rabbit) from Mount Sinai, and likewise that from Algeria, present slight differences, and these forms have been considered by some authors as specifically distinct. But such slight differences would aid us little in explaining the more considerable differences characteristic of the several domestic races. If the latter are the descendants of two or more closely allied species, all, excepting the common rabbit, have been exterminated in a wild state; and this is very improbable, seeing with what pertinacity this animal holds its ground. From these several reasons we may infer with safety that all the domes- tic breeds are the descendants of the common wild spe- cies. But from what we hear of the late marvellous suc- cess in rearing hybrids between the hare and rabbit," it is 3 Owen, 'British Fossil Mammals,' p. 212. 4 Bechstein, Naturgesch. Deutsch- lands,' 1801, b. i. p. 1183. I have re- ceived similar accounts with respect to England and Scotland. 5 Pigeons and Rabbits,' by E. S. De- lamer, 1854, p. 133. Sir J. Sebright (Ob- servations on Instinct, 1836, p. 10) speaks most strongly on the difficulty. But this difficulty is not invariable, as I have received two accounts of perfect success in taming and breeding from the wild rabbit. See also Dr. P. Broca, in Journal de la Physiologie,' tom. ii. p. 368. 6 Gervais, Hist. Nat. des Mammi- fères,' tom. i. p. 292. 7 See Dr. P. Broca's interesting me- moir on this subject in Brown-Sequard's Journ. de Phys.,' vol. ii. p. 367. CHAP. IV. 133 THEIR VARIATION. possible, though not probable, from the great difficulty in making the first cross, that some of the larger races, which are coloured like the hare, may have been modified by crosses with this animal. Nevertheless, the chief dif- ferences in the skeletons of the several domestic breeds cannot, as we shall presently see, have been derived from a cross with the hare. There are many breeds which transmit their characters more or less truly. Every one has seen the enormous lop-eared rabbits exhibited at our shows; various allied sub-breeds are reared on the Continent, such as the so- called Andalusian, which is said to have a large head with a round forehead, and to attain a greater size than any other kind; another large Paris breed is named the Rouennais, and has a square head; the so-called Pa- tagonian rabbit has remarkably short ears and a large round head. Although I have not seen all these breeds, I feel some doubt about there being any marked difference in the shape of their skulls. English lop-eared rabbits often weigh 8 lbs. or 10 lbs., and one has been exhibited weighing 18 lbs. ; whereas a full-sized wild rabbit weighs only about 31 lbs. The head or skull in all the large lop- eared rabbits examined by me is much longer relatively to its breadth than in the wild rabbit. Many of them have loose transverse folds of skin or dewlaps beneath the throat, which can be pulled out so as to reach nearly to the ends of the jaws. Their ears are prodigiously develop- ed, and hang down on each side of their faces. A rabbit has been exhibited with its two ears, measured from the tip of one to the tip of the other, 22 inches in length, and each ear was 53 inches in breadth. In a common wild rabbit I found that the length of the two ears, from tip to tip, was 75 inches, and the breadth only 13 inch. The great weight of the body in the larger rabbits, and the 8 They are briefly described in the 'Journal of Horticulture,' May 7th, 1861, p. 108. 134 CHAP. IV. DOMESTIC RABBITS. immense development of their ears, are the qualities which win prizes, and have been carefully selected. The hare-coloured, or, as it is sometimes called, the Bel- gian rabbit, differs in nothing except colour from the other large breeds; but Mr. J. Young, of Southampton, a great breeder of this kind, informs me that the females, in all the specimens examined by him, had only six mam- mæ; and this certainly was the case with two females which came into my possession. Mr. B. P. Brent, how- ever, assures me that the number is variable with other domestic rabbits. The common wild rabbit always has ten mammæ. The Angora rabbit is remarkable from the length and fineness of its fur, which even on the soles of the feet is of considerable length. This breed is the only one which differs in its mental qualities, for it is said to be much more sociable than other rabbits, and the male shows no wish to destroy its young' Two live rabbits were brought to me from Moscow, of about the size of the wild species, but with long soft fur, different from that of the Angora. These Moscow rabbits had pink eyes and were snow-white, excepting the ears, two spots near the nose, the upper and under surface of the tail, and the hinder tarsi, which were blackish-brown. In short, they were coloured nearly like the so-called Hima- layan rabbits, presently to be described, and differed from them only in the character of their fur. There are two other breeds which come true to colour, but differ in no other respect, namely silver-greys and chinchillas. Lastly, the Nicard or Dutch rabbit may be mentioned, which varies in colour, and is remarkable from its small size, some specimens weighing only 14 lb. ; rabbits of this breed make excellent nurses for other and more delicate kinds.":10 Certain characters are remarkably fluctuating, or are 10 9 Journal of Horticulture,' 1861, p. 880. Journal of Horticulture,' May 28th, 1861, p. 169. CHAP. IV. 135 THEIR VARIATION. وو very feebly transmitted by domestic rabbits: thus, one breeder tells me that with the smaller kinds he has hardly ever raised a whole litter of the same colour: with the large lop-eared breeds “it is impossible,” says a great judge, 11 “ to breed true to colour, but by judicious cross- ing a great deal may be done towards it. The fancier should know how his does are bred, that is, the colour of their parents.” Nevertheless, certain colours, as we shall presently see, are transmitted truly. The dewlap is not strictly inherited. Lop-eared rabbits, with their ears hanging flat down on each side of the face, do not trans- mit this character at all truly. Mr. Delamer remarks that, “ with fancy rabbits, when both the parents are per- fectly formed, have model ears, and are handsomely marked, their progeny do not invariably turn out the same.” When one parent, or even both, are oar-laps, that is, have their ears sticking out at right angles, or when one parent or both are half-lops, that is, have only one ear dependent, there is nearly as good a chance of the pro- geny having both ears full-lop, as if both parents had been thus characterized. But I am informed, if both pa- rents have upright ears, there is hardly a chance of a full- lop. In some half-lops the ear that hangs down is broader and longer than the upright ear; so that we have the unusual case of a want of symmetry on the two sides. This difference in the position and size of the two ears probably indicates that the lopping of the ear results from its great length and weight, favored no doubt by the weakness of the muscles consequent on disuse. An- derson 1 mentions a breed having only a single ear; and Professor Gervais another breed which is destitute of ears. 12 11 Journal of Horticulture, 1861, p. 327. With respect to the ears, 802 Delamer on 'Pigeons and Rabbits,'1854, p. 141 ; also "Poultry Chronicle,' vol. ii. p. 499, and ditto for 1854, p. 586. 12 Delamer, 'Pigeons and Rabbits,' p. 136. See also Journal of Horticulture,' 1861, p. 375. 13 An Account of the different kinds of Sheep in the Russian Dominions, 1794, p. 39. 136 CHAP. IV. DOMESTIC RABBITS. Fig. 5.-Half-lop Rabbit. (Copied from E. S. Delamer's work.) The origin of the Himalayan breed (sometimes called Chinese, or Polish, or Russian) is so curious, both in itself, and as throwing some light on the complex laws of in- heritance, that it is worth giving in detail. These pretty rabbits are white, except their ears, nose, all four feet, and the upper side of tail, which are all brownish-black; but as they have red eyes, they may be considered as albinoes. I have received several accounts of their breeding per- fectly true. From their symmetrical marks, they were at first ranked as specifically distinct, and were provision- ally named L. nigripes.14 Some good observers thought that they could detect a difference in their habits, and stoutly maintained that they formed a new species. Their origin is now well known. A writer, in 1857, stated that he had produced Himalayan rabbits in the following man- ner. But it is first necessary briefly to describe two other breeds: silver-greys or silver-sprigs generally have black 14 Proc. Zoolog. Soc.,' June 23rd, 1857, p. 159. 15 Cottage Gardener,' 1857, p. 141. CHAP. IV. 137 THE HIMALAYAN BREED. heads and legs, and their fine grey fur is interspersed with numerous black and white long hairs. They breed perfect- ly true, and have long been kept in warrens. When they escape and cross with common rabbits, the product, as I hear from Mr. Wyrley Birch, of Wretham Hall, is not a mixture of the two colours, but about half take after the one parent, and the other half after the other parent. Sec- ondly, chinchillas or tame silver-greys (I will use the for- mer name) have short, paler, mouse or slate-coloured fur, interspersed with long, blackish, slate-coloured, and white hairs. 16 These rabbits breed perfectly true. Now, the writer above referred to had a breed of chinchillas which had been crossed with the common black rabbit, and their offspring were either blacks or chinchillas. These latter were again crossed with other chinchillas (which had also been crossed with silver-greys), and from this complicated cross Himalayan rabbits were raised. From these and other similar statements, Mr. Bartlett was led to make a careful trial in the Zoological Gardens, and he found that by simply crossing silver-greys with chinchillas he could always produce some few Himalayans; and the lat- ter, notwithstanding their sudden origin, if kept separate, bred perfectly true. The Himalayans, when first born, are quite white, and are then true albinoes; but in the course of a few months they gradually assume their dark ears, nose, feet, and tail. Occasionally, however, as I am informed by Mr. W. A. Wooler and the Rev. W. D. Fox, the young are born of a very pale grey colour, and specimens of such fur were sent me by the former gentleman. The grey tint, how- ever, disappears as the animal comes to maturity. So that with these Himalayans there is a tendency, strictly confined to early youth, to revert to the colour of the adult silver-grey parent-stock. Silver-greys and chin- 16 Journal of Horticulture,' April 9th, 1861, p. 35. 17 Mr. Bartlett, in Proc. Zoolog. Soc.,' 1861, p. 40. 138 CHAP. IV. DOMESTIC RABBITS. chillas, on the other hand, present a remarkable contrast in their colour whilst quite young, for they are born perfectly black, but soon assume their characteristic grey or silver tints. The same thing occurs with grey horses, which, as long as they are foals, are generally of a nearly black colour, but soon become grey, and get whiter and whiter as they grow older. Hence the usual rule is that Himalayans are born white and afterwards become in certain parts of their bodies dark-coloured ; whilst silver-greys are born black and afterwards become sprinkled with white. Exceptions, however, and of a directly opposite nature, occasionally occur in both cases. For young silver-greys are sometimes born in warrens, as I hear from Mr. W. Birch, of a cream-colour, but these young animals ultimately become black. The Himalayans, on the other hand, sometimes produce, as is stated by an experienced amateur,18 a single black young one in a litter; but such, before two months elapse, become perfectly white. To sum up the whole curious 'case : wild silver-greys may be considered as black rabbits which become grey at an early period of life. When they are crossed with common rabbits, the offspring are said not to have blended colours, but to take after either parent; and in this respect they resemble black and albino varieties of most quadrupeds, which often transmit their colours in this same manner. When they are crossed with chin- chillas, that is, with a paler sub-variety, the young are at first pure albinoes, but soon become dark-coloured in certain parts of their bodies, and are then called Hima- layans. The young Himalayans, however, are sometimes at first either pale grey or completely black, in either case changing after to white. In a future chapter I shall advance a large body of facts showing that, when 18 Phenomenon in Himalayan Rabbits,' in Journal of Horticulture, ' 1865, Jan. 27th, p. 102. CHAP. IV. 139 FERAL RABBITS. two varieties are crossed both of which differ in colour from their parent-stock, there is a strong tendency in the young to revert to the aboriginal colour; and what is very remarkable, this reversion occasionally supervenes, not before birth, but during the growth of the animal. Hence, if it could be shown that silver-greys and chin- chillas were the offspring of a cross between a black and albino variety with the colours intimately blended-a supposition in itself not improbable, and supported by the circumstance of silver-greys in warrens sometimes producing creamy-white young, which ultimately become black—then all the above-given paradoxical facts on the changes of colour in silver-greys and in their descendants the Himalayans would come under the law of reversion, supervening at different periods of growth and in differ- ent degrees, either to the original black or to the ori- ginal albino parent-variety. It is, also, remarkable that Himalayans, though produced so suddenly, breed true. But as, whilst young, they are albinoes, the case falls under a very general rule; for albinism is well known to be strongly inherited, as with white mice and many other quadrupeds, and even with white flowers. But why, it may be asked, do the ears, tail, nose, and feet, and no other part of the body, revert to a black colour? This apparently depends on a law, which generally holds good, namely, that characters com- mon to many species of a genus-and this, in fact, implies long inheritance in common from the ancient progenitor of the genus—are found to resist variation, or to reappear if lost, more persistently than the characters which are con- fined to the separate species. Now, in the genus Lepus, a large majority of the species have their ears and the upper surface of the tail tinted black; but the persistence of these marks is best seen in those species which in win- ter become white: thus, in Scotland the L. variabilis 19 19 G. R. Waterhouse, Natural History of Mammalia: Rodents,' 1846, pp. 52, 60, 105. 140 CHAP. IV. DOMESTIC RABBITS. in its winter dress has a shade of colour on its nose, and the tips of its ears are black: in the L. tibetanus the ears are black, the upper surface of the tail greyish black, and the soles of the feet brown: in L. glacialis the winter fur is pure white, except the soles of the feet and the points of the ears. Even in the variously-coloured fancy rabbits we may often observe a tendency in these same parts to be more darkly tinted than the rest of the body. Thus, as it seems to me, the appearance of the several coloured marks on the Himalayan rabbit, as it grows old, is ren- dered intelligible. I may add a nearly analogous case: fancy rabbits very often have a white star on their fore- heads; and the common English hare, whilst young, gen- erally has, as I have myself observed, a similar white star on its forehead. When variously coloured rabbits are set free in Europe, and are thus placed under their natural conditions, they generally revert to the aboriginal grey colour; this may be in part due to the tendency in all crossed animals, as lately observed, to revert to their primordial state. But this tendency does not always prevail; thus silver-grey rabbits are kept in warrens, and remain true though liv- ing almost in a state of nature; but a warren must not be stocked with both silver-greys and common rabbits; otherwise “in a few years there will be none but common greys surviving." When rabbits run wild in foreign countries, under different conditions of life, they by no means always revert to their aboriginal colour. In Ja- maica the feral rabbits are described as “slate-coloured, deeply tinted with sprinklings of white on the neck, on the shoulders, and on the back; softening off to blue- white under the breast and belly.”21 But in this tropi- 9 20 20 Delamer on Pigeons and Rabbits,' p. 114. 21 Gosse's Sojourn in Jamaica,' 1851, p. 441, as described by an excellent ob- server, Mr. R. Hill. This is the only known case in which rabbits have be- come feral in a hot country. They can be kept, however, at Loanda (see Living- stone's Travels,' p. 407). In parts c: India, as I am informed by Mr. Blyth, they breed well. CHAP. IV, 141 FERAL RABBITS. cal island the conditions were not favourable to their increase, and they never spread widely; and, as I hear from Mr. R. Hill, owing to a great fire which occurred in the woods, they have now become extinct. Rabbits during many years have run wild in the Falkland Islands; they are abundant in certain parts, but do not spread ex- tensively. Most of them are of the common grey colour; a few, as I am informed by Admiral Sulivan, are hare- coloured, and many are black, often with nearly symme- trical white marks on their faces. Hence, M. Lesson described the black variety as a distinct species, under the name of Lepus magellanicus, but this, as I have elsewhere shown, is an error. 22 Within recent times the sealers have stocked some of the small outlying islets in the Falkland group with rabbits; and on Pebble Islet, as I hear from Admiral Sulivan, a large proportion are bare- coloured, whereas on Rabbit Islet a large proportion are of a bluish colour which is not elsewhere seen. How the rabbits were coloured which were turned out on these islets is not known. The rabbits which have become feral on the island of Porto Santo, near Madeira, deserve a fuller account. In 1418 or 1419, J. Gonzales Zarco happened to have a female rabbit on board which had produced young during the voyage, and he turned them all out on the island. These animals soon increased so rapidly, that they became a nuisance, and actually caused the aban- donment of the settlement. Thirty-seven years subse- quently, Cada Mosto describes them as innumerable ; nor is this surprising, as the island was not inhabited by any beast of prey or by any terrestrial mammal. We do not know the character of the mother-rabbit; but we have 22 Darwin's Journal of Researches, p. 193; and 'Zoology of the Voyage of the Beagle : Mammalia,' p. 92. 23 Kerr's Collection of Voyages,' vol. ii. p. 177; p. 205 for Cada Mosto. Ac- cording to a work published in Lisbon in 1717, entitled Historia Insulana,' written by a Jesuit, the rabbits were turned out in 1420. Some authors be- lieve that the island was discovered in 1413. 142 CHAP. IV. DOMESTIC RABBITS. every reason to believe that it was the common domesti- cated kind. The Spanish peninsula, whence Zarco sailed, is known to have abounded with the common wild spe- cies at the most remote historical period. As these rab- bits were taken on board for food, it is improbable that they should have been of any peculiar breed. That the breed was well domesticated is shown by the doe having littered during the voyage. Mr. Wollaston, at my re- quest, brought home two of these feral rabbits in spirits of wine; and, subsequently, Mr. W. Haywood sent to me three more specimens in brine, and two alive. These seven specimens, though caught at different periods, closely resembled each other. They were full grown, as shown by the state of their bonés. Although the condi- tions of life in Porto Santo are evidently highly favour- able to rabbits, as proved by their extraordinarily rapid increase, yet they differ conspicuously in their small size from the wild English rabbit. Four English rabbits, measured from the incisors to the anus, varied between 17 and 17 inches in length; whilst two of the Porto Santo rabbits were only 141 and 15 inches in length. But the decrease in size is best shown by weight; four wild English rabbits averaged 3 lb. 5 oz., whilst one of the Porto Santo rabbits, which had lived for four years in the Zoological Gardens, but had become thin, weighed only 1 lb. 9 oz. A fairer test is afforded by the compari- son of the well-cleaned limb-bones of a P. Santo rabbit killed on the island with the same bones of a wild English rabbit of average size, and they differed in the propor- tion of rather less than five to nine. So that the Porto Santo rabbits have decreased nearly three inches in length, and almost half in weight of body. The head has not 24 24 Something of the same kind has oc- curred on the island of Lipari, where, according to Spallanzani (Voyage dans les deux Siciles,' quoted by Godron sur l'Espèce, p. 364), a countryman turned out some rabbits which multiplied pro- digiously, but, says Spallanzani, "les lapins de l'ile de Lipari sont plus petits que ceux qu'on élève en domesticité." CHAP. IV. 143 FERAL RABBITS. decreased in length proportionally with the body; and the capacity of the brain-case is, as we shall hereafter see, singularly variable. I prepared four skulls, and these resembled each other more closely than do generally the skulls of wild English rabbits; but the only difference in structure which they presented was that the supra-orbital processes of the frontal bones were narrower. In colour the Porto Santo rabbit differs considerably from the common rabbit; the upper surface is redder, and is rarely interspersed with any black or black-tipped hairs. The throat and certain parts of the under surface, instead of being pure white, are generally pale grey or leaden colour. But the most remarkable difference is in the ears and tail; I have examined many fresh English rabbits, and the large collection of skins in the British Museum from various countries, and all have the upper surface of the tail and the tips of the ears clothed with blackish- grey fur; and this is given in most works as one of the specific characters of the rabbit. Now in the seven Porto Santo rabbits the upper surface of the tail was reddish- brown, and the tips of the ears had no trace of the black edging. But here we meet with a singular circumstance: in June, 1861, I examined two of these rabbits recently sent to the Zoological Gardens, and their tails and ears were coloured as just described; but when one of their dead bodies was sent to me in February, 1865, the ears were plainly edged, and the upper surface of the tail was covered, with blackish-grey fur, and the whole body was much less red; so that under the English climate this individual rabbit had recovered the proper colour of its fur in rather less than four years! The two little Porto Santo rabbits, whilst alive in the Zoological Gardens, had a remarkably different appear- ance from the common kind. They were extraordinarily wild and active, so that many persons exclaimed on seeing them that they were more like large rats than rabbits. They were nocturnal to an unusual degree in their habits, 144 CHAP. IV. DOMESTIC RABBITS. and their wildness was never in the least subdued ; so • that the superintendent, Mr. Bartlett, assured me that he had never had a wilder animal under his charge. This is a singular fact, considering that they are descended from a domesticated breed; I was so much surprised at it, that I requested Mr. Haywood to make inquiries on the spot, whether they were much hunted by the inhabi. tants, or persecuted by hawks, or cats, or other animals; but this is not the case, and no cause can be assigned for their wildness. They live on the central, higher rocky land and near the sea-cliffs, and, being exceedingly shy and timid, seldom appear in the lower and cultivated districts. They are said to produce from four to six young at a birth, and their breeding season is in July and August. Lastly, and this is a highly remarkable fact, Mr. Bartlett could never succeed in getting these two rabbits, which were both males, to associate or breed with the females of several breeds which were repeatedly placed with them. If the history of these Porto Santo rabbits had not been known, most naturalists, on observing their much reduced size, their reddish colour above and grey beneath, with neither tail nor ears tipped with black, would have ranked them as a distinct species. They would have been strongly confirmed in this view by seeing them alive in the Zoo- logical Gardens, and hearing that they refused to couple with other rabbits. Yet this rabbit, which there can be little doubt would thus have been ranked as a distinct species, has certainly originated since the year 1420. Fi- nally, from the three cases of the rabbits which have run wild in Porto Santo, Jamaica, and the Falkland Islands, we see that these animals do not, under new conditions of life, revert to or retain their aboriginal character, as is so generally asserted to be the case by most authors. Chap. IV. DIFFERENCES IN THEIR SKELETONS. 145 Osteological Characters. When we remember, on the one hand, how frequently it is stated that important parts of the structure never vary; and, on the other hand, on what small differences in the skeleton fossil species have often been founded, the variability of the skull and of some other bones in the domesticated rabbit well deserves attention. It must not be supposed that the more important differences imme- diately to be described strictly characterise any one breed; all that can be said is, that they are generally pre- sent in certain breeds. We should bear in mind that selec- tion has not been applied to fix any character in the skel- eton, and that the animals have not had to support them- selves under uniform habits of life. We cannot account for most of the differences in the skeleton; but we shall see that the increased size of the body, due to careful nurture and continued selection, has affected the head in a particular manner. Even the elongation and lopping of the ears have influenced in a small degree the form of the whole skull. The want of exercise has apparently modified the proportional length of the limbs in compari- son with the body. As a standard of comparison, I prepared skeletons of two wild rab- bits from Kent, one from the Shetland Islands, and one from Antrim in Ireland. As all the bones in these four specimens from such dis- tant localities closely resembled each other, presenting scarcely any appreciable difference, it may be concluded that the bones of the wild rabbit are generally uniform in character. Skull.--I have carefully examined skulls of ten large lop-eared fan- cy rabbits, and of five common domestic rabbits, which latter differ from the lop-eared only in not having such large bodies or ears, yet both larger than in the wild rabbit. First for the ten lop-eared rab- bits: in all these the skull is remarkably elongated in comparison with its breadth. In a wild rabbit the length was 3.15 inches, in a large fancy rabbit 4:30; whilst the breadth of the cranium enclosing the brain was in both almost exactly the same. Even by taking as the standard of comparison the widest part of the zygomatic arch, the 7 146 CHAP. IV DOMESTIC RABBITS. skulls of the lop-eared are proportionally to their breadth three- quarters of an inch too long. The depth of the head has increased almost in the same proportion with the length; it is the breadth alone which has not increased. The parietal and occipital bones en- closing the brain are less arched, both in a longitudinal and trans- verse line, than in the wild rabbit, so that the shape of the cranium is somewhat different. The surface is rougher, less cleanly sculp- tured, and the lines of sutures are more prominent. Although the skulls of the large lop-eared rabbits in comparison with those of the wild rabbit are much elongated relatively to their breadth, yet, relatively to the size of body, they are far from elon- gated. The lop-eared rabbits which I examined were, though not fat, more than twice as heavy as the wild specimens; but the skull was very far from being twice as long. Even if we take the fairer stand- ard of the length of body, from the nose to the anus, the skull is not on an average as long as it ought to be by a third of an inch. In the small feral P. Santo rabbit, on the other hand, the head rela- tively to the length of the body is about a quarter of an inch too long This elongation of the skull relatively to its breadth, I find a uni- versal character, not only with the large lop-eared rabbits, but in all the artificial breeds; as is well seen in the skull of the Angora. I was at first much surprised at the fact, and could not imagine why domestication should produce this uniform result; but the explana- tion seems to lie in the circumstance that during a number of gen- erations the artificial races have been closely confined, and have had little occasion to exert either their senses, or intellect, or voluntary muscles; consequently the brain, as we shall presently more fully see, has not increased relatively with the size of body. As the brain has not increased, the bony case enclosing it has not increased, and this has evidently affected through correlation the breadth of the entire skull from end to end. In all the skulls of the large lop-eared rabbits, the supra-orbital plates or processes of the frontal bones are much broader than in the wild rabbit, and they generally project more upwards. In the zygomatic arch the posterior or projecting point of the malar-bone is broader and blunter; and in the specimen, fig. 8; it is so in a remarkable degree. This point approaches nearer to the auditory meatus than in the wild rabbit, as may be best seen in fig. 8; but this circumstance mainly depends on the changed direction of the meatus. The inter-parietal bone (see fig. 9) differs much in shape in the several skulls; generally it is more oval, or has a greater width in the line of the longitudinal axis of the skull, than in the Chap. IV. DIFFERENCES IN THEIR SKELETONS. 147 ( ERSTIN LASSEN DUNDW Fig. 6.-Skull of Wild Rabbit, of mataral size. Fig. 7.—Skull of large Lop-eared Rabbit, of natu- ral size. wild rabbit. The posterior margin of "the square raised plat- form" 25 of the occiput, instead of being truncated, or projecting slightly as in the wild rabbit, is in most lop-eared rabbits pointed, 25 Waterhouse, Nat. Hist. Mammalia,' pol. ii. p. 36. 148 CHAP. IV. DOMESTIC RABBITS. as in fig. 9, C. The paramas- toids relatively to the size of the skull are generally much thicker than in the wild rab- bit. The occipital foramen (fig. 10) presents some remarkable differences: in the wild rabbit, the lower edge between the condyles is considerably and almost angularly hollowed out, and the upper edge is deeply and squarely notched; hence the longitudinal axis exceeds the transverse axis. In the Fig. 8.- Part of Zygomatic Arch, showing skulls of the lop-eared rabbits the projecting end of the malar bone, and the transverse axis exceeds the the auditory meatus : of natural size. Upper figure, Wild Rabbit. Lower figure, longitudinal; for in none of Lop-eared, hare-coloured Rabbit. these skulls was the lower edge between the condyles so deeply hollowed out; in five of them there was no upper square notch, in three there was a trace of the notch, and in two alone it was well A B C developed. These differ- ences in the shape of the foramen are remarkable, considering that it gives passage to so important a structure as the spinal marrow, though appa- Fig. 9.-Posterior end of Skull, of natural size, rently the outline of the showing the inter-parietal bone. A. Wild Rabbit. latter is not affected by B. Feral Rabbit from island of P. Santo, near the shape of the passage. Madeira. C. Large Lop-eared Rabbit. In all the skulls of the large lop-eared rabbits, the bony auditory meatus is conspicuously larger than in the wild rabbit. In a skull 4.3 inches in length, and which barely exceeded А in breadth the skull of a wild rabbit (which was 3.15 inches in length), the longer diameter of the meatus was exactly twice as great. The ori- Fig. 10.-Occipital Foramen of natural size, in- fice is more compressed, A. Wild Rabbit; B. Large Lop-eared Rabbit. and its margin on the B CHAP. IV. DIFFERENCES IN THEIR SKELETONS. 149 side nearest the skull stands up higher than the outer side. The whole meatus is directed more forwards. As in breeding lop-eared rabbits the length of the ears, and their consequent lopping and ly- ing flat on the face, are the chief points of excellence, there can hardly be a doubt that the great change in the size, form, and direction of the bony meatus, rela- tively to this same part in the wild rabbit, is due to the continued selection of individuals having larger and larger ears. The influ- ence of the external ear on the bony meatus is well shown in the skulls (I have examined three) of half-lops (see fig. 5), in which one ear stands upright, and the other and longer ear hang's down; for in these skulls there was a plain difference in the form and direction of the bony meatus on the two sides. But it is a much more interesting fact, that the changed direction and increased size of the bony meatus have slightly affect- ed on the same side the structure of the whole skull. I here give a drawing of the skull of a half-lop; and it Fig. 11.-Skull of natural size of Half-lop Rab- may be observed that the bit, showing the different direction of the au- suture between the parietal ditory meatus on the two sides, and the con- and frontal bones does not sequent general distortion of the skull. The run strictly at right angles left ear of the animal (or right side of the fig- ure) lopped forwards. to the longitudinal axis of the skull; the left frontal bone projects beyond the right one; both the posterior and anterior margins of the left zygomatic arch on the side of the lopping ear stand a little in advance of the corresponding bones on the opposite side. Even the lower jaw is affected, and the condyles are not quite 150 CHAP. IV. DOMESTIC RABBITS. symmetrical, that on the left standing a little in advance of that on the right. This seems to me a remarkable case of correlation of growth. Who would have surmised that by keeping an animal during many generations under confinement, and so leading to the disuse of the muscles of the ears, and by continually selecting indi- viduals with the longest and largest ears, he would thus indirectly have affected almost every suture in the skull and the form of the lower jaw ! In the large lop-eared rabbits the only difference in the lower jaw, in comparison with that of the wild rabbit, is that the posterior margin of the ascending ramus is broader and more infected. The teeth in neither jaw present any difference, except that the small incisors, beneath the large ones, are proportionally a little longer. The mo- lar teeth have increased in size proportionally with the increased width of the skull, measured across the zygomatic arch, and not proportionally with its increased length. The inner line of the sockets of the molar teeth in the upper jaw of the wild rabbit forms a perfectly straight line; but in some of the largest skulls of the lop-eared this line was plainly bowed inwards. In one specimen there was an additional molar tooth on each side of the upper jaw, between the molars and premolars; but these two teeth did not correspond in size; and as no rodent has seven molars, this is merely a monstrosity, though a curious one. The five other skulls of common domestic rabbits, some of which approach in size the above-described largest skulls, whilst the others exceed but little those of the wild rabbit, are only worth notice as presenting a perfect gradation in all the above-specified differences between the skulls of the largest lop-eared and wild rabbits. In all, however, the supra-orbital plates are rather larger, and in all the auditory meatus is larger, in conformity with the increased size of the external ears, than in the wild rabbit. The lower notch in the oc- cipital foramen in some was not so deep as in the wild, but in all five skulls the upper notch was well developed. The skull of the Angora rabbit, like the latter five skulls, is inter- mediate in general proportions, and in most other characters, between those of the largest lop-eared and wild rabbits. It presents only one singular character: though considerably longer than the skull of the wild, the breadth measured within the posterior supra-orbital fissures is nearly a third less than in the wild. The skulls of the silver-grey and chinchilla and Himalayan rabbits are more elongated than in the wild, with broader supra-orbital plates, but differ little in any other respect, excepting that the upper and lower notches of the occipital foramen are not so deep or so well developed. The skull of the Moscow rabbit scarcely differs in any respect from that of the Chap. IV. DIFFERENCES IN THEIR SKELETONS. 151 wild rabbit. In the Porto Santo feral rabits the supra-orbital plates are generally narrower and more pointed than in our wild rabbits. As some of the largest lop-eared rabbits of which I prepared skele- tons were coloured almost like hares, and as these latter animals and rabbits have, as it is affirmed, been recently crossed in France, it might be thought that some of the above-described characters had been derived from a cross at a remote period with the hare. Consequently I examined skulls of the hare, but no light could thus be thrown on the peculiarities of the skulls of the larger rabbits. It is, however, an interesting fact, as illustrating the law that varieties of one species often assume the characters of other species of the same genus, that I found, on comparing the skulls of ten species of hares in the British Museum, that they differed from each other chiefly in the very same points in which domestic rabbits vary,- namely, in general proportions, in the form and size of the supra- orbital plates, in the form of the free end of the malar bone, and in the line of suture separating the occipital and frontal bones. More- over two eminently variable characters in the domestic rabbit, namely, the outline of the occipital foramen and the shape of the "raised platform ” of the occiput, were likewise variable in two instances in the same species of hare. Vertebrae.-The number is uni- a form in all the skeletons which I have examined, with two excep- tions, namely, in one of the small feral Porto Santo rabbits and in one of the largest lop-eared kinds; both of these had as usual seven cervical, twelve dorsal with ribs, but, in- stead of seven lumbar, both had eight lumbar vertebre. This is re- markable, as Gervais gives seven as the number for the whole genus Lepus. The caudal vertebræ appa- rently differ by two or three, but I 7 did not attend to them, and they Fig. 12. — Atlas Vertebræ, of natural are difficult to count with certainty. size; inferior surface viewed ob- In the first cervical vertebra, liquely. Upper figure, Wild Rabbit. or atlas, the anterior margin of Lower figure, Hare-coloured, large the neural arch varies a little in Lop-eared Rabbit. a, supra-median, atlantoid process; 6, infra-median wild specimens, being either nearly process. smooth, or furnished with a small supra-median atlantoid process; I have figured a specimen with the largest process (a) which I have seen; but it will be observed how 152 CHAP. IV. DOMESTIC RABBITS. inferior this is in size and different in shape to that in a large lop- eared rabbit. In the latter, the infra-median process (6) is also pro- portionally much thicker and longer. The alæ are a little squarer in outline. Third cervical vertebra.-In the wild rabbit (fig. 13, A a) this vertebra, viewed on the inferior surface, has a transverse process, which is directed obliquely backwards, and consists of a single pointed bar; in the fourth vertebra this process is slightly forked in the middle. In the large lop-eared rabbits this process (B a) is forked in the third vertebra, as in the fourth of the wild rabbit. But the third cervical vertebræ of the wild and lop- eared (A , B b) rabbits А. B differ more conspicuous- ly when their anterior articular surfaces are compared ; for the ex- tremities of the antero- dorsal processes in the wild rabbit are simply rounded, whilst in the lop-eared they are trifid, a a with a deep central pit. The canal for the spinal marrow in the lop-eared (B b is more elongated Fig. 13.-Third Cervical Vertebra, of natural in a transverse direction size, of-A. Wild Rabbit; B. Hare-coloured, large, Lop-eared Rabbit. a, a, inferior sur- than in the wild rabbit; face; 6, 6, anterior articular surfaces. and the passages for the arteries are of a slightly different shape. These several differences in this vertebra seem to me well deserving attention. First dorsal vertebra.--Its neural spine varies in length in the wild rabbit ; being sometimes very short, but generally more than half as long as that of the second dorsal; but I have seen it in two large lop-eared rabbits three-fourths of the length of that of the second dorsal vertebra. Ninth and tenth dorsal vertebra.- In the wild rabbit the neural spine of the ninth vertebra is just perceptibly thicker than that of the eighth; and the neural spine of the tenth is plainly thicker and shorter than those of all the anterior vertebræ. In the large lop- eared rabbits the neural spines of the tenth, ninth, eighth, and even in a slight degree that of the seventh vertebra, are very much thick- er, and of somewhat different shape, in comparison with those of the wild rabbit. So that this part of the vertebral column differs con- siderably in appearance from the same part in the wild rabbit, and CHAP. IV. DIFFERENCES IN THEIR SKELETONS. 153 А closely resembles in an interesting manner these same vertebræ in some species of hares. In the Angora, Chinchilla, and Himalayan rabbits, the neural spines of the eighth and ninth ver- tebræ are in a slight degree thicker than in the wild. On the other hand, in one of the feral Porto San- to rabbits, B which in most of its characters deviates in an exactly орро- site manner to Fig. 14.- Dorsal Vertebræ, from sixth to tenth inclusive, of what the large natural size, viewed laterally. A. Wild Rabbit. B. Large, Hare-coloured, so called Spanish Rabbit. lop-eared rab- bits do from the common wild rabbit, the neural spines of the ninth and tenth vertebræ were not at all larger than those of the several anterior vertebræ. In this same Porto Santo specimen there was no trace in the ninth vertebra of the anterior lateral processes (see woodcut 14), which are plainly developed in all British wild rabbits, and still more plainly developed in the large lop-eared rabbits. In a half- wild rabbit from Sandon Park,26 a hæmal spine was moderately well developed on the under side of the twelfth dorsal vertebra, and I have seen this in no other specimen. Lumbar vertebra.--I have stated that in two cases there were eight instead of seven lumbar vertebræ. The third lumbar ver- tebra in one skeleton of a wild British rabbit, and in one of the Porto Santo feral rabbits, had a hæmal spine; whilst in four skele- tons of large lop-eared rabbits, and in the Himalayan rabbit, this same vertebra had a well-developed hæmal spine. 26 These rabbits have run wild for a considerable time in Sandon Park, and in other places in Staffordshire and Shropshire. They originated, as I have been informed by the gamekeeper, from variously-coloured domestic rabbits which had been turned out. They vary in colour; but many are symmetrically coloured, being white with a streak along the spine, and with the ears and certain marks about the head of a blackish-grey tint. They have rather longer bodies than common rabbits. 154 CHAP. IV. DOMESTIC RABBITS. Pelvis.-In four wild specimens this bone was almost absolutely identical in shape; but in several domesticated breeds shades of differences could be distinguished. In the large lop-eared rabbits the whole upper part of the ilium is straighter, or less splayed out- wards, than in the wild rabbit ; and the tuberosity on the inner lip of the anterior and upper part of the ilium is proportionally more prominent. Sternum.-The posterior end of the posterior sternal bone in the wild rabbit (fig. 15, A) is thin and slightly enlarged ; in some of the large lop-eared rabbits (B) it is much more enlarged towards the extremity; whilst in other specimens (C) it keeps nearly of the same breadth from end to end, but is much-thicker at the extremity. A B C A B Fig. 15.- Terminal bone of Sternum, of natural size. A. Wild Rabbit. B. Hare- coloured, Lop-eared Rabbit. C. Hare-coloured, Spanish Rabbit. (N.B.-The left- hand angle of the upper articular extremity of B was broken, and has been accidentally thus repre- sented.) 0 D Fig. 16.- Acromion of Scapula, of natural size. A. Wild Rabbit. B, C, D. Large, Lop-eared Rabbits. Scapula.—The acromion sends out a rectangular bar, ending in an oblique knob, which latter in the wild rabbit (fig. 16, A) varies a little in shape and size, as does the apex of the acromion in sharp- ness, and the part just below the rectangular bar in breadth. But the variations in these respects in the wild rabbit are very slight; whilst in the large lop-eared rabbits they are considerable. Thus in some specimens (B) the oblique terminal knob is developed into a short bar, forming an obtuse angle with the rectangular bar. In another specimen (C) these two unequal bars form nearly a straight line. The apex of the acromion varies much in breadth and sharp- ness, as may be seen by comparing figs. B, C, and D. CHAP. IV. EFFECTS OF USE AND DISUSE. . 155 Limbs.In these I could detect no variation; but the bones of the feet were too troublesome to compare with much care, I have now described all the differences in the skele- tons which I have observed. It is impossible not to be struck with the high degree of variability or plasticity of many of the bones. We see how erroneous the often- repeated statement is, that only the crests of the bones which give attachment to muscles vary in shape, and that only parts of slight importance become modified under domestication. No one will say, for instance, that the occipital foramen, or the atlas, or the third cervical vetebra is a part of slight importance. If the several vertebræ of the wild and lop-eared rabbits, of which figures have been given, had been found fossil, palæonto- logists would have declared without hesitation that they had belonged to distinct species. The effects of the use and disuse of parts.-In the large lop- eared rabbits the relative proportional lengths of the bones of the same leg, and of the front and hind legs compared with each other, have remained nearly the same as in the wild rabbit; but in weight, the bones of the hind legs apparently have not increased in due proportion with the front legs. The weight of the whole ody in the large rabbits examined by me was from twice to twice and a half as great as that of the wild rabbit; and the weight of the bones of the front and hind limbs taken together (excluding the feet, on account of the difficulty of perfectly cleaning so many small bones) has increased in the large lop-eared rabbits in nearly the same proportion ; consequently in due proportion to the weight of body which they have to support. If we take the length of the body as the standard of comparison, the limbs of the large rabbits have not increased in length in due proportion by one inch, or by one inch and a half. Again, if we take as the standard of compari- son the length of the skull, which, as we have before seen, has not increased in length in due proportion to the length of the body, the limbs will be found to be, proportionally with those of the wild rab- bit, from half to three-quarters of an inch too short. Hence, what- ever standard of comparison be taken, the limb bones of the large lop-eared rabbits have not increased in length, though they have in weight, in full proportion to the other parts of the frame; and this, 156 CHAP. IV. DOMESTIC RABBITS. I presume, may be accounted for by the inactive life which during many generations they have spent. Nor has the scapula increased in length in due proportion to the increased length of the body. The capacity of the osseous case of the brain is a more interesting point, to which I was led to attend by finding, as previously stated, that with all domesticated rabbits the length of the skull relatively to its breadth has greatly increased in comparison with that of the wild rabbit. If we had possessed a large number of domesticated rabbits of nearly the same size with the wild rabbit, it would have been a simple task to have measured and compared the capacities of their skulls. But this is not the case; almost all the domestic breeds have larger bodies than wild rabbits, and the lop-eared kinds are more than double their weight. As a small animal has to exert its senses, intellect, and instincts equally with a large animal, we ought not by any means to expect an animal twice or thrice as large as another to have a brain of double or treble the size.27 Now, after weighing the bodies of four wild rabbits, and of four large but not fattened lop-eared rabbits, I find that on an average the wild are to the lop-eared in weight as 1 to 2:17; in average length of body as 1 to 1.41; whilst in capacity of skull (measured as hereafter to be described) they are only as 1 to 1'15. Hence we see that the capacity of the skull, and consequently the size of the brain, has in- creased but little relatively to the increased size of the body; and this fact explains the narrowness of the skull relatively to its length in all domestic rabbits. In the upper half of the following table I have given the mea- surements of the skulls of ten wild rabbits; and in the lower half of eleven thoroughly domesticated kinds. As these rabbits differ so greatly in size, it is necessary to have some standard by which to compare the capacities of their skulls. I have selected the length of skull as the best standard, for in the larger rabbits it has not, as already stated, increased in length so much as the body; but as the skull, like every other part, varies in length, neither it nor any other part affords a perfect standard. In the first column of figures the extreme length of the skull is given in inches and decimals. I am aware that these measurements pretend to greater accuracy than is possible; but I have found it the least trouble to record the exact length which the compass gave. The second and third columns give the length and weight of body, whenever these measurements have been made. The fourth column 27 See Prof. Owen's remarks on this &c.,' read before Brit. Association, 1862; subject in his paper on the 'Zoological with respect to Birds, see 'Proc. Zoolog. Significance of the Brain, &c., of Man, Soc. Jan. 11th, 1848, p. 8. CHAP. IV. 157 EFFECTS OF USE AND DISUSE. gives the capacity of the skull by the weight of small shot with which the skulls had been filled; but it is not pretended that these weights are accurate within a few grains. In the fifth column the capacity is given which the skull ought to have had by calculation, according to the length of skull, in comparison with that of the wild rabbit No. 1 ; in the sixth column the difference between the actual and calculated capacities, and in the seventh the percentage of increase or decrease, are given. For instance, as the wild rabbit No. 5 has a shorter and lighter body than the wild rabbit No. 1, we might have expected that its skull would have had less capacity; the actual capacity, as expressed by the weight of shot, is 875 grains, which is 97 grains less than that of the first rabbit. But comparing these two rabbits by the length of their skulls, we see that in No. 1 the skull is 3.15 inches in length, and in No. 5 2.96 inches in length ; according to this ratio, the brain of No.5 ought to have had a capacity of 913 grains of shot, which is above the actual capacity, but only by 38 grains. Or, to put the case in another way (as in column VII), the brain of this small rabbit, No. 5, for every 100 grains of weight is only 4 per cent. too light that is, it ought, according to the standard rabbit No. 1, to have been 4 per cent. heavier. I have taken the rabbit No. 1 as the standard of compari- son because, of the skulls having a full average length, this has the least capacity; so that it is the least favourable to the result which I wish to show, namely, that the brain in all long-domesti- cated rabbits has decreased in size, either actually, or relatively to the length of the head and body, in comparison with the brain of the wild rabbit. Had I taken the Irish rabbit, No. 3, as the stan- dard, the following results would have been somewhat more striking Turning to the Table: the first four wild rabbits have skulls of the same length, and these differ but little in capacity. The Sandon rabbit (No. 4) is interesting, as, though now wild, it is known to be descended from a domesticated breed, as is still shown by its pecu- liar colouring and longer body; nevertheless the skull has recovered its normal length and full capacity. The next three rabbits are wild, but of small size, and they all have skulls with slightly les- sened capacities. The three Porto Santo feral rabbits (Nos. 8 to 10) offer a perplexing case; their bodies are greatly reduced in size, as in a lesser degree are their skulls in length and in actual capacity, in comparison with the skulls of wild English rabbits. But when we compare the capacities of the skull in the three Porto Santo rabbits, we observe a surprising difference, which does not stand in any relation to the slight difference in the length of their skulls, nor, as I believe, to any difference in the size of their bodies; but I 158 CHAP. IV DOMESTIC RABBITS. neglected to weigh separately their bodies. I can hardly suppose that the medullary matter of the brain in these three rabbits, living under similar conditions, can differ as much as is indicated by the proportional difference of capacity in their skulls ; nor do I know whether it is possible that one brain may contain considerably more fluid than another. Hence I can throw no light on this case. Looking to the lower half of the Table, which gives the measure- ments of domesticated rabbits, we see that in all the capacity of the skull is less, but in very various degrees, than might have been anticipated according to the length of their skulls, relatively to that of the wild rabbit No. 1. In line 22 the average measurements of seven large lop-eared rabbits are given. Now the question arises, has the average capacity of the skull in these seven large rabbits increased as much as might have been expected from their greatly increased size of body. We may endeavour to answer this question in two ways: in the upper half of the Table we have measurements of the skulls of six small wild rabbits (Nos. 5 to 10), and we find that on an average the skulls are in length 18 of an inch shorter, and in capacity 91 grains less, than the average length and capacity of the three first wild rabbits on the list. The seven large lop-eared rabbits, on an average, have skulls 4:11 inches in length, and 1136 grains in capacity; so that these skulls have in- creased in length more than five times as much as the skulls of the six small wild rabbits have decreased in length; hence we might have expected that the skulls of the large lop-eared rabbits would have increased in capacity five times as much as the skulls of the six small rabbits have decreased in capacity; and this would have given an average increased capacity of 455 grains, whilst the real average increase is only 155 grains. Again, the large lop-eared rabbits have bodies of nearly the same weight and size as the com- mon hare, but their heads are longer; consequently, if the lop- eared rabbits had been wild, it might have been expected that their skulls would have had nearly the same capacity as that of the skull of the hare. But this is far from being the case ; for the average capacity of the two hare-skulls (Nos. 23, 24) is so much larger than the average capacity of the seven lop-eared skulls, that the latter would have to be increased 21 per cent. to come up to the standard of the hare 28 28 This standard is apparently consi- derably too low, for Dr. Crisp. Proc. Zoolog. Soc.,'1861, p. 56) gives 210 grains as the actual weight of the brain of a hare which weighed 7 lbs., and 125 grains as the weight of the brain of a rabbit which weighed 3 lbs. 5 oz., that is, the same weight as the rabbit No. 1 in my list. Now the contents of the skull of rabbit No. 1 in shot is in my CHAP. IV. 159 EFFECTS OF USE AND DISUSE. I have previously remarked that, if we had possessed many do- mestic rabbits of the same average size with the wild rabbit, it would have been easy to compare the capacity of their skulls. Now the Himalayan, Moscow, and Angora rabbits (Nos. 11, 12, 13 of Table) are only a little larger in body, and have skulls only a little longer, than the wild animal, and we see that the actual ca- pacity of their skulls is less than in the wild animal, and considera- bly less by calculation (column 7), according to the difference in the length of their skulls. The narrowness of the brain-case in these three rabbits could be plainly seen and proved by external measure- ment. The Chinchilla rabbit (No. 14) is a considerably larger ani- mal than the wild rabbit, yet the capacity of its skull only slightly exceeds that of the wild rabbit. The Angora rabbit, No. 13, offers the most remarkable case; this animal in its pure white colour and length of silky fur bears the stamp of long domesticity. It has a considerably longer head and body than the wild rabbit, but the actual capacity of its skull is less than that of even the little wild Porto Santo rabbits. By the standard of the length of skull the capacity (see column 7) is only half of what it ought to have been! I kept this individual animal alive, and it was not unhealthy nor idiotic. This case of the Angora rabbit so much surprised me, that I repeated all the measurements and found them correct. I have also compared the capacity of the skull of the Angora with that of the wild rabbit by other standards, namely, by the length and weight of the body, and by the weight of the limb-bones; but by all these standards the brain appears to be much too small, though in a less degree when the standard of the limb-bones was used ; and this latter circumstance may probably be accounted for by the limbs of this anciently domesticated breed having become much reduced in weight, from its long-continued inactive life. Hence I infer that in the Angora breed, which is said to differ from other breeds in being quieter and more social, the capacity of the skull has really undergone a remarkable amount of reduction. From the several facts above given,-namely, firstly, that the actual capacity of the skull in the Himalayan, Moscow, and Angora breeds, is less than in the wild rabbit, though they are in all their dimensions rather larger animals; secondly, that the capacity of the skull table 972 grains; and according to Dr. Crisp's ratio of 125 to 210, the skull of the hare ought to have contained 1682 grains of shot, instead of only in the largest hare in my table) 1455 grains. 160 CHAP. IV. DOMESTIC RABBITS. I. II. Name of Breed. WILD AND SEMI-WILD RABBITS Length Length of Body of from Skull. Incisors III. IV. Capacity of Weight Skull of mea- whole sured by Small Shot. V. VI. Capacity, calculated Difference according to between Length of actual and Skull rela- calculated tively to that capacities of No.1. of Skulls. VII. Showing how much per cent. the Brain, by calcu- lation, according to the length of the Skull, is too light or too heavy, rela- tively to the Brain of the Wild Rabbit No. 1. to Anus. Body. grains. grains. inches. 17.4 18.5 17.0 lbs. ozs. grains. 3 5 972 979 992 977 2 14 875 918 2 11 938 893 756 835 828 73 15.5 913 950 910 873 879 1910 888 38 32 28 20 123 75 60 S[2 per cent. too heavy in comparison with No. 1.] 4 per cent. too light. 3 3 too heavy. 2 16 too light. 9 7 . 97 inches. 1. Wild rabbit, Kent 3.15 2. Shetland Islands 3.15 3. Ireland 3.15 4. Domestic rabbit, run wild, Sandon 3.15 5. Wild, common variety, small specimen, Kent 2.96 6. Wild, fawn-coloured variety, Scotland 3:1 7. Silver-grey, small specimen, Thetford warren 2.95 8. Feral rabbit, Porto Santo 2.83 9 2.85 10. 2.95 Average of the three Porto Santo rabbits 2.88 DOMESTIC RABBITS. 11. Himalayan 3.5 12. Moscow 3.25 13. Angora 3.5 14. Chinchilla 3.65 15. Large lop-eared 4.1 16. 4:1 17. 4.07 18. 19. 20. 4.25 21. Large hare-coloured 3.86 22. Average of above seven large lop-eared rabbits 4:11 23. Hare (L. timidus) English specimen 3.61 24. German specimen 3.82 12 3 8 3 1 12 24 9 20.5 17.0 19.5 22.0 24.5 25.0 54 13 18 9 7 0 7 13 963 803 697 995 1065 1153 1037 1208 1232 1124 1131 1136 1080 1002 1080 1126 1265 1265 1255 1265 1326 1311 1191 1268 117 199 383 131 200 112 218 57 94 187 60 132 21 73 4:1 4.3 25.0 7 4 4 7 16 5 11 24.0 24.62 6 14 7 4 7 7 0 0 1315 1455 19 CHAP. IV. 161 EFFECTS OF USE AND DISUSE. of the large lop-eared rabbits has not been increased in nearly the same ratio as the capacity of the skull of the smaller wild rabbits has been decreased; and third- ly, that the capacity of the skull in these same large lop- eared rabbits is very inferior to that of the hare, an ani- mal of nearly the same size, I conclude, notwithstand- ing the remarkable differences in capacity in the skulls of the small P. Santo rabbits, and likewise in the large lop-eared kinds, that in all long-domesticated rabbits the brain has either by no means increased in due propor- tion with the increased length of the head and increased size of the body, or that it has actually decreased in size, relatively to what would have occurred had these animals lived in a state of nature. When we remember that rabbits, from having been domesticated and closely confined during many generations, cannot have exerted their intellect, instincts, senses, and voluntary move- ments, either in escaping from various dangers or in searching for food, we may conclude that their brains will have been feebly exercised, and consequently have suffered in development. We thus see that the most im- portant and complicated organ in the whole organization is subject to the law of decrease in size from disuse. Finally, let us sum up the more important modifica- tions which domestic rabbits have undergone, together with their causes as far as we can obscurely see them. By the supply of abundant and nutritious food, together with little exercise, and by the continued selection of the heaviest individuals, the weight of the larger breeds has been more than doubled. The bones of the limbs have increased in weight (but the hind legs less than the front legs), in due proportion with the increased weight of body; but in length they have not increased in due proportion, and this may have been caused by the want of proper exercise. With the increased size of the body the third cervical vertebra has assumed characters proper to the fourth cervical; and the eighth and ninth dorsal 162 CHAP. IV. DOMESTIC RABBITS. vertebræ have similarly assumed characters proper to the tenth and posterior vertebræ. The skull in the larger breeds has increased in length, but not in due proportion with the increased length of body; the brain has not duly increased in dimensions, or has even ac- tually decreased, and consequently the bony case for the brain has remained narrow, and by correlation has affected the bones of the face and the entire length of the skull. The skull has thus acquired its characteristic narrowness. From unknown causes the supra-orbital pro- cesses of the frontal bones and the free end of the malar bones have increased in breadth; and in the larger breeds the occipital foramen is generally much less deeply notched than in wild rabbits. Certain parts of the sca- pula and the terminal sternal bones have become highly variable in shape. The ears have been increased enormous- ly in length and breadth through continued selection; their weight, conjoined probably with the disuse of their muscles, has caused them to lop downwards; and this has affected the position and form of the bony auditory meatus; and this again, by correlation, the position in a slight degree of almost every bone in the upper part of the skull, and even the position of the condyles of the lower jaw. CHAP. V. PIGEONS: DESCRIPTION OF BREEDS. 163 CHAPTER V. DOMESTIC PIGEONS. ENUMERATION AND DESCRIPTION OF THE SEVERAL BREEDS IN- DIVIDUAL VARIABILITY VARIATIONS OF A REMARKABLE NA- TURE OSTEOLOGICAL CHARACTERS: SKULL, LOWER JAW, NUM- BER OF VERTEBRÆ- CORRELATION OF GROWTH : TONGUE WITH BEAK, EYELIDS AND NOSTRILS WITH WATTLED SKIN — NUMBER OF WING-FEATHERS, AND LENGTH OF WING- - COLOUR AND DOWN WEBBED AND FEATHERED FEET - ON THE EFFECTS OF DISUSE -LENGTH OF FEET IN CORRELATION WITH LENGTH OF BEAK - LENGTH OF STERNUM, SCAPULA, AND FERCULA — LENGTH OF WINGS — SUMMARY ON THE POINTS OF DIFFERENCE IN THE SEVERAL BREEDS. I HAVE been led to study domestic pigeons with particu- lar care, because the evidence that all the domestic races have descended from one known source is far clearer than with any other anciently domesticated animal. Secondly, because many treatises in several languages, some of them old, have been written on the pigeon, so that we are enabled to trace the history of several breeds. And lastly, because, from causes which we can partly understand, the amount of variation has been ex- traordinarily great. The details will often be tediously minute; but no one who really wants to understand the progress of change in domestic animals will regret this; and no one who has kept pigeons and has marked the great difference between the breeds and the trueness with which most of them propagate their kind, will think this care superfluous. Notwithstanding the clear evidence 164 CHAP. V. DOMESTIC PIGEONS. that all the breeds are the descendants of a single species, I could not persuade myself until some years had passed that the whole amount of difference between them had arisen since man first domesticated the wild rock-pigeon. I have kept alive all the most distinct breeds, which I could procure in England or from the Continent; and have prepared skeletons of all. I have received skins from Persia, and a large number from India and other quarters of the world. Since my admission into two of the Lon- don pigeon-clubs, I have received the kindest assistance from many of the most eminent amateurs.? The races of the Pigeon which can be distinguished, and which breed true, are very numerous. MM. Boitard and Corbié º describe in detail 122 kinds; and I could add several European kinds not known to them. In India, judging from the skins sent me, there are many breeds unknown here; and Sir W. Elliot informs me that a col- lection imported by an Indian merchant into Madras 1 The Hon. C. Murray has sent me some very valuable specimens from Per- sia; and H.M. Consul, Mr. Keith Ab- bott, has given me information on the pigeons of the same country. I am deeply indebted to Sir Walter Elliot for an immense collection of skins from Madras, with much information regard- ing them. Mr. Blyth has freely com- municated to me his stores of knowledge on this and all other related subjects. The Rajah Sir James Brooke sent me specimens from Borneo, as has H.M. Consul, Mr. Swinhoe, from Amoy in China, and Dr. Daniell from the west coast of Africa. 2 Mr. B. P. Brent, well known for his various contributions to poultry litera- ture, has aided me in every way during several years; so has Mr. Tegetmeier, with unwearied kindness. This latter gentleman, who is well known for his works on poultry, and who has largely bred pigeons, has looked over this and the following chapters. Mr. Bult for- merly showed me his unrivalled collec- tion of Pouters, and gave me specimens. I had access to Mr. Wicking's collection, which contained a greater assortment of many kinds than could anywhere else be seen; and he has always aided me with specimens and information given in the freest manner. Mr. Haynes and Mr. Corker have given me specimens of their magnificent Carriers. To Mr. Har- rison Weir I am likewise indebted. Nor must I by any means pass over the as- sistance received from Mr. J. M. Eaton, Mr. Baker, Mr. Evans, and Mr. J. Baily, jun., of Mount-street-to the latter gen- tlemen I have been indebted for some valuable specimens. To all these gen- tlemen I beg permission to return my sincere and cordial thanks. 3 'Les Pigeons de Volière et de Co- lombier,' Paris, 1824. During forty-five years the sole occupation of M. Corbié was the care of the pigeons belonging to the Duchess of Berry. CHAP. V. 165 DESCRIPTION OF BREEDS. from Cairo and Constantinople included several kinds unknown in India. I have no doubt that there exist considerably above 150 kinds which breed true and have been separately named. But of these the far greater number differ from each other only in unimportant cha- racters. Such differences will be here entirely passed over, and I shall confine myself to the more important points of structure. That many important differences exist we shall presently see. I have looked through the magnificent collection of the Columbidæ in the British Museum, and, with the exception of a few forms (such as the Didunculus, Calænas, Goura, &c.), I do not hesitate to affirm that some domestic races of the rock-pigeon differ fully as much from each other in external charac- ters as do the most distinct natural genera. We may look in vain through the 288 known species * for a beak so small and conical as that of the short-faced tumbler; for one so broad and short as that of the barb; for one so long, straight, and narrow, with its enormous wattles, as that of the English carrier; for an expanded upraised tail like that of the fantail; or for an esophagus like that of the pouter. I do not for a moment pretend that the domestic races differ from each other in their whole or- ganisation as much as the more distinct natural genera. I refer only to external characters, on which, however, it must be confessed that most genera of birds have been founded. When, in a future chapter, we discuss the prin- ciple of selection as followed by man, we shall clearly see why the differences between the domestic races are almost always confined to external, or at least to exter- nally visible, characters. Owing to the amount and gradations of difference be- tween the several breeds, I have found it indispensable in the following classification to rank them under Groups, 4 Coup d'oeil sur l'Ordre des Pi- geons,' par Prince C. L. Bonaparte, Pa- ris, 1855. This author makes 288 spe- cies, ranked under 85 genera, 166 CHAP. V. DOMESTIC PIGEONS. . Races, and Sub-races; to which varieties and sub-varie- ties, all strictly inheriting their proper characters, must often be added. Even with the individuals of the same sub-variety, when long kept by different fanciers, differ- ent strains can sometimes be recognised. There can be no doubt that, if well-characterized forms of the several Races had been found wild, all would have been ranked as distinct species, and several of them would certainly have been placed by ornithologists in distinct genera. A good classification of the various domestic breeds is ex- tremely difficult, owing to the manner in which many of the forms graduate into each other; but it is curious how exactly the same difficulties are encountered, and the same rules have to be followed, as in the classification of any natural but difficult group of organic beings. An “artificial classification” might be followed which would present fewer difficulties than a “natural classification;" but then it would interrupt many plain affinities. Ex- treme forms can readily be defined ; but intermediate and troublesome forms often destroy our definitions. Forms which may be called “aberrant” must sometimes be included within groups to which they do not accurate- ly belong. Characters of all kinds must be used; but as with birds in a state of nature, those afforded by the beak are the best and most readily appreciated. It is not pos- sible to weigh the importance of all the characters which have to be used so as to make the groups and sub-groups of equal value. Lastly, a group may contain only one race, and another and less distinctly defined group may contain several races and sub-races, and in this case it is difficult, as in the classification of natural species, to avoid placing too high a value on characters which are common to a large number of forms. In my measurements I have never trusted to the eye; and when speaking of a part being large or small, I always refer to the wild rock-pigeon (Columba livia) CHAP. V. 167 DESCRIPTION OF BREEDS. as the standard of comparison. The measurements are given in decimals of an inch." I will now give a brief description of all the principal breeds. The following diagram may aid the reader in learning their names and seeing their affinities. The rock-pigeon, or Columba livia (including under this name two or three closely allied sub-species or geographical races, hereafter to be described), may be confidently viewed, as we shall see in the next chapter, as the com- mon parent-form. The names in italics on the right-hand side of the table show us the most distinct breeds, or those which have undergone the greatest amount of modifica- tion. The lengths of the dotted lines rudely represent the degree of distinctness of each breed from the parent- stock, and the names placed under each other in the col- umns show the more or less closely connecting links. The distances of the dotted lines from each other approximate- ly represent the amount of difference between the seve- ral breeds. 23 5 As I so often refer to the size of the measurements of two wild birds, kindly C. livia, or rock-pigeon, it may be con- sent me by Dr. Edmondstone from the venient to give the mean between the Shetland Islands :- Inches. Length from feathered base of beak to end of tail 14.25 to oil-gland 9:5 from tip of beak to end of tail 15.02 of tail feathers 4.62 from tip to tip of wing 26.75 of folded wing... 9.25 Beak.-Length from tip of beak to feathered base -77 Thickness, measured vertically at further end of nostrils -23 Breadth, measured at same place .. -16 Feet.-Length from end of middle toe (without claw) to distal end of tibia 2.77 Length from end of middle toe to end of hind toe (without claws).. .. 2:02 Weight 1474 ounces. 168 CHAP. V DOMESTIC PIGEONS. Fig. 17.- The Rock-pigeon, or Columba livia.. Pigeons. The parent-form of all domesticated 6 This drawing was made from a dead bird. The six following figures were drawn with great care by Mr. Luke Wells from living birds selected by Mr. Teget- meier. It may be confidently asserted that the characters of the six breeds which have been figured are not in the least exaggerated. CHAP. V. 169 DESCRIPTION OF BREEDS. COLUMBA LIVIA OR ROCK-PIGEON. GROUP I. GROUP II. GROUP III. GROUP IV. 1. 2. 3. 4. 5. 6. 7. SUB- GROUPS. 8. 10. 11. 9. SUB- GROUPS. ......... Kali-Par Persian Tumbler ..Murassa Lotan Tumbler Bussorah Common Tumbler Bagadotten Scanderoon Tronfo German P. Lille P. Dragon Dutch P. Java Fantail Pigeon Cygne Turbit. Nun. Laugher. Spot. Trumpeter. Swallow. English Frill-back. Dove-cot pigeon. English Pouter. Runt. English Carrier Jacobin. Barb. Fantail. African Short Indian Orol. faced Frill- Tumbler. back. 00 170 CAAP. V. DOMESTIC PIGEONS. en Fig. 18.-English Pouter. GROUP I. This group includes a single race, that of the Pouters. If the most strongly marked sub-race be taken, namely, the Improved English Pouter, this is perhaps the most distinct of all domesticated pigeons. CHAP. V. 171 DESCRIPTION OF BREEDS. RACE I. -POUTER PIGEONS. (Kropf-tauben, German, Grosses-gorges, or boulans, French.) Esophagus of great size, barely separated from the crop, often inflated. Body and legs elongated. Beak of moderate dimensions. Sub-race I.-The improved English Pouter, when its crop is fully inflated, presents a truly astonishing appearance. The habit of slightly inflating the crop is common to all domestic pigeons, but is carried to an extreme in the Pouter. The crop does not differ, ex- cept in size, from that of other pigeons; but is less plainly separated by an oblique construction from the cesophagus. The diameter of the upper part of the oesophagus is immense, even close up to the head. The beak in one bird which I possessed was almost com- pletely buried when the oesophagus was fully expanded. The males, especially when excited, pout more than the females, and they glory in exercising this power. If a bird will not, to use the technical ex- pression, "play,” the fancier, as I have witnessed, by taking the beak into his mouth, blows him up like a balloon; and the bird, then puffed up with wind and pride, struts about, retaining his magnifi- cent size as long as he can. Pouters often take flight with their crops inflated ; and after one of my birds had swallowed a good meal of peas and water, as he flew up in order to disgorge them and thus feed his nearly fledged young, I have heard the peas rattling in his inflated crop as if in a bladder. When flying they often strike the backs of their wings together, and thus make a clapping noise. Pouters stand remarkably upright, and their bodies are thin and elongated. In connexion with this form of body, the ribs are gene- rally broader and the vertebræ more numerous than in other breeds. From their manner of standing their legs appear longer than they really are, though in proportion with those of C. livia, the legs and feet are actually longer. The wings appear much elongated, but by measurement, in relation to the length of body, this is not the case. The beak likewise appears longer, but it is in fact a little shorter (about .03 of an inch), proportionally with the size of the body, and relatively to the beak of the rock-pigeon. The Pouter, though not bulky, is a large bird ; I measured one which was 341 inches from tip to tip of wing, and 19 inches from tip of beak to end of tail. In a wild rock-pigeon from the Shetland Islands the same measurements gave only 283 and 141. There are many sub-varieties of the Pouter of different colours, but these I pass over. 172 CHAP. V. DOMESTIC PIGEONS. Sub-race II. Dutch Pouter. This seems to be the parent-form of our improved English Pouters. I kept a pair, but I suspect that they were not pure birds. They are smaller than English Pouters, and less well developed in all their characters. Neumeister" says that the wings are crossed over the tail, and do not reach to its ex- tremity. Sub-race III. The Lille Pouter.—I know this breed only from description. It approaches in general form the Dutch Pouter, but the inflated oesophagus assumes a spherical form, as if the pigeon had swallowed a large orange, which had stuck close under the beak. This inflated ball is represented as rising to a level with the crown of the head. The middle toe alone is feathered. A variety of this sub-race, called the claquant, is described by MM. Boitard and Corbié ; it pouts but little, and is characterised by the habit of violently hitting its wings together over its back,-a habit which the English Pouter has in a slight degree. Sub-race IV. Common German Pouter.--I know this bird only from the figures and description given by the accurate Neumeister, one of the few writers on pigeons who, as I have found, may be al- ways trusted. This sub-race seems considerably different. The up- per part of the oesophagus is much less distended. The bird stands less upright. The feet are not feathered, and the legs and beak are shorter. In these respects there is an approach in form to the com- mon rock-pigeon. The tail-feathers are very long, yet the tips of the closed wings extend beyond the end of the tail; and the length of the wings, from tip to tip, and of the body, is greater than in the English Pouter. GROUP II. This group includes three Races, namely, Carriers, Runts, and Barbs, which are manifestly allied to each other Indeed, certain carriers and runts pass into each other by such insensible gradations that an arbitrary line has to be drawn between them. Carriers also graduate through foreign breeds into the rock-pigeon. Yet, if well- characterised Carriers and Barbs (see figs. 19 and 20) had existed as wild species, no ornithologist would have placed them in the same genus with each other or with the rock- 7. Das Ganze der Taubenzucht:' Wei- mar, 1887, pl. 11 and 12. 8 Boitard and Corbié, 'Les Pigeons,' &c., 177, pl. 6. CHAP. V. 173 DESCRIPTION OF BREEDS. pigeon. This group may, as a general rule, be recognised by the beak being long, with the skin over the nostrils swollen and often carunculated or wattled, and with that round the eyes bare and likewise carunculated. The mouth is very wide, and the feet are large. Nevertheless the Barb, which must be classed in this same group, has a very short beak, and some runts have very little bare skin round their eyes. RACE II. —CARRIERS. (Türkische Taube: Pigeons Turcs : Dragons.) Beak elongated, narrow, pointed ; eyes surrounded by much naked, generally carunculated skin; neck and body elongated. Sub-race I. The English Carrier.—This is a fine bird, of large size, close feathered, generally dark-coloured, with an elongated neck. The beak is attenuated and of wonderful length: in one specimen it was 14 inch in length from the feathered base to the tip; therefore nearly twice as long as that of the rock-pigeon, which measured only 77. Whenever I compare proportionally any part in the carrier and rock-pigeon, I take the length of the body from the base of the beak to the end of the tail as the standard of compari- son; and according to this standard, the beak in one Carrier was nearly half an inch longer than in the rock-pigeon. The upper mandible is often slightly arched. The tongue is very long. The development of the carunculated skin or wattle round the eyes, over the nostrils, and on the lower mandible is prodigious. The eyelids, measured longitudinally, were in some specimens exactly twice as long as in the rock-pigeon. The external orifice or furrow of the nostrils was also twice as long. The open mouth in its widest part was in one case 75 of an inch in width, whereas in the rock-pigeon it is only about 4 of an inch. This great width of mouth is shown in the skeleton by the reflexed edges of the ramus of the lower jaw. The head is flat on the summit and narrow between the orbits. The feet are large and coarse; the length, as measured from end of hind toe to end of middle toe (without the claws), was in two specimens 2.6 inches; and this, proportionally with the rock-pigeon, is an ex- cess of nearly a quarter of an inch. One very fine Carrier measured 314 inches from tip to tip of wing. Birds of this sub-race are too valuable to be flown as carriers. 174 CHAP. V. DOMESTIC PIGEONS. Sub-race II. Dragons ; Persian Carriers.—The English Dragon differs from the improved English Carrier in being smaller in all its dimensions, and in having less wattle round the eyes and over Fig. 19.- English Carrier. the nostrils, and none on the lower mandible. Sir W. Elliot sent me from Madras a Bagdad Carrier (sometimes called khandési), the name of which shows its Persian origin; it would be considered CHAP. V. 175 DESCRIPTION OF BREEDS. here a very poor Dragon; the body was of the size of the rock- pigeon, with the beak a little longer, namely, 1 inch from the tip to the feathered base. The skin round the eyes was only slightly wattled, whilst that over the nostrils was fairly wattled. The Hon. C. Murray, also, sent me two Carriers direct from Persia ; these had nearly the same character as the Madras bird, being about as large as the rock-pigeon, but the beak in one specimen was as much as 1.15 in length; the skin over the nostrils was only moderately, and that round the eyes scarcely at all wattled. Sub-race III. Bagadotten-Tauben of Neumeister (Pavdotten or Hocker-Tauben).--I owe to the kindness of Mr. Baily, jun., a dead specimen of this singular breed imported from Germany. It is certainly allied to the Runts; nevertheless, from its close affinity with Carriers, it will be convenient here to describe it. The beak is long, and is hooked or bowed downwards in a highly remarkable manner, as will be seen in the woodcut to be hereafter given when I treat of the skeleton. The eyes are surrounded by a wide space of bright red skin, which, as well as that over the nostrils, is mode- rately wattled. The breast-bone is remarkably protuberant, being abruptly bowed outwards. The feet and tarsi are of great length, larger than in first-rate English Carriers. The whole bird is of large size, but in proportion to the size of the body the feathers of the wing and tail are short; a wild-rock pigeon of considerably less size, had tail-feathers 4:6 inches in length, whereas in the large Bagadotten these feathers were scarcely over 41 inches in length. Riedel º remarks that it is a very silent bird. Sub-race IV. Bussorah Carrier.-Two specimens were sent me by Sir W. Elliot from Madras, one in spirits and the other skinned. The name shows its Persian origin. It is much valued in India, and is considered as a distinct breed from the Bagdad Carrier, which forms my second sub-race. At first I suspected that these two sub-races might have been recently formed by crosses with other breeds, though the estimation in which they are held renders this improbable; but in a Persian treatise, 10 believed to have been written about 100 years ago, the Bagdad and Bussorah breeds are described as distinct. The Bussorah Carrier is of about the same size with the wild roek-pigeon. The shape of the beak, with some little carunculated skin over the nostrils,-the much elongated eyelids,—the broad mouth measured internally,—the narrow head, - the feet proportionally a little longer than in the rock-pigeon,--and 9 Die Taubenzucht,' Ulm, 1924, s. 42. 10 This treatise was written by Sayzid Mohammed Musari, who died in 1770: I owe to the great kindness of Sir W. Elliot a translation of this curious treatise. 176 CHAP. V. DOMESTIC PIGEONS. the general appearance, all show that this bird is an undoubted Carrier; yet in one specimen the beak was of exactly the same length as in the rock-pigeon. In the other specimen the beak (as well as the opening of the nostrils) was only a very little longer, viz. by .08 of an inch. Although there was a considerable space of bare and slightly carunculated skin round the eyes, that over the nostrils was only in a slight degree rugose. Sir W. Elliot informs me that in the living bird the eye seems remarkably large and prominent, and the same fact is noticed in the Persian treatise; but the bony orbit is barely larger than that in the rock-pigeon. Amongst the several breeds sent to me from Madras by Sir W. Elliot there is a pair of the Kala Par, black birds with the beak slightly elongated, with the skin over the nostrils rather full, and with a little naked skin round the eyes. This breed seems more closely allied to the Carrier than to any other breed, being nearly intermediate between the Bussorah Carrier and the rock-pigeon. The names applied in different parts of Europe and in India to the several kinds of Carriers all point to Persia or the surrounding countries as the source of this Race. And it deserves especial notice that, even if we neglect the Kala Par as of doubtful origin, we get a series broken by very small steps, from the rock-pigeon, through the Bussorah, which sometimes has a beak not at all longer than that of the rock-pigeon and with the naked skin round the eyes and over the nostrils very slightly swollen and carunculated, through the Bagdad sub-race and Dragons, to our improved English Carriers, which present so marvellous a difference from the rock-pigeon or Columba livia. RACE III.—RUNTS. (Scanderoons: Die Florentiner-Taube and Hinkel-Taube of Neumeister: Pigeon Bagadais, Pigeon Romain.) Beak long, massive ; body of great size. Inextricable confusion reigns in the classification, affinities, and naming of Runts. Several characters which are generally pretty constant in other pigeons, such as the length of the wings, tail, legs, and neck, and the amount of naked skin round the eyes, are excessively variable in Runts. When the naked skin over the nostrils and round the eyes is considerably developed and wattled, and when the size of body is not very great, Runts graduate in so insensible a manner into Carriers, that the distinction is quite arbi- trary. This fact is likewise shown by the names given to them in different parts of Europe. Nevertheless, taking the most distinct CHAP. V. 177 DESCRIPTION OF BREEDS. forms, at least five sub-races (some of them including well-marked varieties) can be distinguished, which differ in such important points of structure, that they would be considered as good species in a state of nature. Sub-race I. Scanderoon of English writers (Die Florentiner and Hinkel-Taube of Neumeister). -Birds of this sub-race, of which I kept one alive and have since seen two others, differ from the Baga- dotten of Neumeister only in not having the beak nearly so much curved downwards, and in the naked skin round the eyes and over the nostrils being hardly at all wattled. Nevertheless I have felt myself compelled to place the Bagadotten in Race II., or that of the Carriers, and the present bird in Race III., or that of the Runts. The Scanderoon has a very short, narrow, and elevated tail ; wings extremely short, so that the first primary feathers were not longer than those of a small tumbler pigeon! Neck long, much bowed ; breast-bone prominent. Beak long, being 1.15 inch from tip to feathered base; vertically thick; slightly curved downwards. The skin over the nostrils swollen, not wattled; naked skin round the eyes, broad, slightly carunculated. Legs long, feet very large. . Skin of neck bright red, often showing a naked medial line, with a naked red patch at the distant end of the radius of the wing. My bird, as measured from the base of the beak to the root of the tail, was fully 2 inches longer than the rock-pigeon ; yet the tail itself was only four inches in length, whereas in the rock-pigeon, which is a much smaller bird, the tail is 45 inches in length. The Hinkel or Florentiner-Taube of Neumeister (Table XIII., fig. 1) agrees with the above description in all the specified characters (for the beak is not mentioned), except that Neumeister expressly says that the neck is short, whereas in my Scanderoon it was re- markably long and bowed ; so that the Hinkel forms a well-marked variety Sub-race II. Pigeon Cygne and Pigeon Bagadais of Boitard and Corbié (Scanderoon of French writers).—I kept two of these birds alive, imported from France. They differed from the first sub-race or true Scanderoon in the much greater length of the wing and tail, in the beak not being so long, and in the skin about the head being more carunculated. The skin of the neck is red; but the naked patches on the wings are absent. One of my birds measured 381 inches from tip to tip of wing. By taking the length of the body as the standard of comparison, the two wings were no less than 5 inches longer than those of the rock-pigeon! The tail was 61 inches in length, and therefore 21 inches longer than that of the Scande- roon,-a bird of nearly the same size. The beak is longer, thicker, and broader than in the rock-pigeon, proportionally with the size 178 CHAP. V. DOMESTIC PIGEONS. of body. The eyelids, nostrils, and internal gape of mouth are all proportionally very large, as in Carriers. The foot, from the end of the middle to end of hind toe, was actually 2.85 inches in length, which is an excess of 32 of an inch over the foot of the rock-pigeon, relatively to the size of the two birds. Sub-race III. Spanish and Roman Runts.—I am not sure that I am right in placing these Runts in a distinct sub-race; yet, if we take well-characterized birds, there can be no doubt of the propriety of the separation. They are heavy, massive birds, with shorter necks, legs, and beaks than in the foregoing races. The skin over the nostrils is swollen, but not carunculated; the naked skin round the eyes is not very wide, and only slightly carunculated ; and I have seen a fine so-called Spanish Runt with hardly any naked skin round the eyes. Of the two varieties to be seen in England, one, which is the rarer, has very long wings and tail, and agrees pretty chosely with the last sub-race; the other, with shorter wings and tail, is apparently the Pigeon Romain ordinaire of Boitard and Corbie. These Runts are apt to tremble like Fantails. They are bad flyers. A few years ago Mr. Gulliver 11 exhibited a Runt which weighed 1 lb. 14 oz.; and, as I am informed by Mr. Tegetmeier, two Runts from the south of France were lately exhibited at the Crystal Palace, each of which weighed 2 lbs. 24 oz. A very fine rock-pigeon from the Shetland Islands weighed only 141 oz. Sub-race IV. Tronfo of Aldrovandi (Leghorn Runt ?).—In Aldro- vandi's work published in 1600 there is a coarse woodcut of a great Italian pigeon, with an elevated tail, short legs, massive body, and with the beak short and thick. I had imagined that this latter character, so abnormal in the group, was merely a false representa- tion from bad drawing; but Moore, in his work published in 1735, says that he possessed a Leghorn Runt of which "the beak was very short for so large a bird." In other respects Moore's bird re- sembled the first sub-race of Scanderoon, for it had a long bowed neck, long legs, short beak, and elevated tail, and not much wattle about the head. So that Aldrovandi's and Moore's birds must have formed distinct varieties, both of which seem to be now extinct in Europe. Sir W. Elliot, however, informs me that he has seen in Madras a short-beaked Runt imported from Cairo. Sub-race V. Murassa (adorned Pigeon) of Madras.-Skins of these handsome chequered birds were sent me from Madras by Sir W. Elliot. They are rather larger than the largest rock-pigeon, with longer and more massive beaks. The skin over the nostrils is 11 Poultry Chronicle,' vol. ii. p. 573. CHAP. V. 179 DESCRIPTION OF BREEDS. rather full and very slightly carunculated, and they have some naked skin round the eyes : feet large. This breed is intermediate between the rock-pigeon and a very poor variety of Runt or Car- rier. From these several descriptions we see that with Runts, as with Carriers, we have a fine gradation from the rock-pigeon (with the Tronfo diverging as a distinct branch) to our largest and most mas- sive Runts. But the chain of affinities, and many points of resem- blance, between Runts and Carriers, make me believe that these two races have not descended by independent lines from the rock- pigeon, but from some common parent, as represented in the Table, which had already acquired a moderately long beak, with slightly swollen skin over the nostrils, and with some slightly carunculated naked skin round the eyes. RACE IV.—BARBS. (Indische-Taube: Pigeons Polonais.) Beak short, broad, deep; naked skin round, the eyes, broad and carunculated ; skin over nostrils slightly swollen. Misled by the extraordinary shortness and form of the beak, I did not at first perceive the near affinity of this Race to that of Carriers until the fact was pointed out to me by Mr. Brent. Subsequently, after examining the Bussorah Carrier, I saw that no very great amount of modification would be requisite to convert it into a Barb. This view of the affinity of Barbs to Carriers is supported by the analogical difference between the short and long-beaked Runts; and still more strongly by the fact that young Barbs and Dragons, within 24 hours after being hatched, resemble each other more closely than do young pigeons of other and equally distinct breeds. At this early age, the length of beak, the swollen skin over the ra- ther open nostrils, the gape of the mouth, and the size of the feet, are the same in both; although these parts afterwards become widely different. We thus see that embryology (as the comparison of very young animals may perhaps be called) comes into play in the classification of domestic varieties, as with species in a state of nature. Fanciers, with some truth, compare the head and beak of the Barb to that of a bullfinch. The Barb, if found in a state of nature, would certainly have been placed in a new genus formed for its re- ception. The body is a little larger than that of the rock-pigeon, but the beak is more than 2 of an inch shorter ; although shorter, 180 CHAP. V. DOMESTIC PIGEONS. FTY. 20.-English Barb. it is both vertically and horizontally thicker. From the outward flexure of the rami of the lower jaw, the mouth internally is very CHAP. V. 181 DESCRIPTION OF BREEDS. broad, in the proportion of .6 to 4 to that of the rock-pigeon. The whole head is broad. The skin over the nostrils is swollen, but not carunculated, except slightly in first-rate birds when old; whilst the naked skin round the eye is broad and much carunculated. It is sometimes so much developed, that a bird belonging to Mr. Harri- son Weir could hardly see to pick up food from the ground. The eyelids in one specimen were nearly twice as long as those of the rock-pigeon. The feet are coarse and strong, but proportionally rather shorter than in the rock-pigeon. The plumage is generally dark and uniform. Barbs, in short, may be called short-beaked Car- riers, bearing the same relation to Carriers that the Tronfo of Aldro- vandi does to the common Runt. GROUP III. This group is artificial, and includes a heterogeneous collection of distinct forms. It may be defined by the beak in well-characterised specimens of the several races, being shorter than in the rock-pigeon, and by the skin round the eyes not being much developed. RACE V.-FANTAILS. Sub-race I. European Fantails (Pfauen-Taube ; Trembleurs). Tail expanded, directed upwards, formed of many feathers; oil-gland aborted; body and beak rather short. The normal number of tail-feathers in the genus Columba is 12; but Fantails have from only 12 (as has been asserted) up to, ac- cording to MM. Boitard and Corbié, 42. I have counted in one of my own birds 33, and at Calcutta Mr. Blyth 12 has counted in an im- perfect tail 34 feathers. In Madras, as I am informed by Sir W. Elliot, 32 is the standard number; but in England number is much less valued than the position and expansion of the tail. The feath- ers are arranged in an irregular double row; their permanent ex- pansion, like a fan, and their upward direction, are more remarkable characters than their increased number. The tail is capable of the same movements as in other pigeons, and can be depressed so as to sweep the ground. It arises from a more expanded basis than in other pigeons; and in three skeletons there were one or two extra coccygeal vertebræ. I have examined many specimens of various 12 Annals and Mag. of Nat. History,' vol. xix., 1847, p. 105. 182 CHAP. V. DOMESTIC PIGEONS. I'ig. 21.-English Fantail. colours from different countries, and there was no trace of the oil- gland; this is a curious case of abortion.13 The neck is thin and 13 This gland occurs in most birds; but Nitzsch (in his 'Pterylographie,' 1810, p. 55) states that it is absent in two species of Columba, in several species of CHAP. V. 183 DESCRIPTION OF BREEDS. bowed backwards. The breast is broad and protuberant. The feet are small. The carriage of the bird is very different from that of other pigeons; in good birds the head touches the tail-feathers, which consequently often become crumpled. They habitually trem- ble much; and their necks have an extraordinary, apparently con- vulsive, backward and forward movement. Good birds walk in a singular manner, as if their small feet were stiff. Owing to their large tails, they fly badly on a windy day. The dark-coloured vari- eties are generally larger than white Fantails. Although between the best and common Fantails, now existing in England, there is a vast difference in the position and size of the tail, in the carriage of the head and neck, in the convulsive move- ments of the neck, in the manner of walking, and in the breadth of the breast, the differences so graduate away, that it is impossi- ble to make more than one sub-race. Moore, however, an excellent old authority, 14 says, that in 1735 there were two sorts of broad- tailed shakers (i.e. fantails), "one having a neck much longer and more slender than the other;" and I am informed by Mr. B. P. Brent that there is an existing German Fantail with a thicker and shorter beak. Sub-race II. Java Fantail.-Mr. Swinhoe sent me from Amoy, in China, the skin of a Fantail belonging to a breed known to have been imported from Java. It was coloured in a peculiar manner, unlike any European Fantail, and, for a fantail, had a remarkably short beak. Athough a good bird of the kind, it had only 14 tail- feathers; but Mr. Swinhoe has counted in other birds of this breed from 18 to 24 tail-feathers. From a rough sketch sent to me, it is evident that the tail is not so much expanded or so much upraised as in even second-rate European Fantails. The bird shakes its neck like our Fantails. It had a well-developed oil-gland. Fantails were known in India, as we shall hereafter see, before the year 1600 ; and we may suspect that in the Java Fantail we see the breed in its earlier and less improved condition. Psittacus, in some species of Otis, and in most or all birds of the Ostrich family. It can hardly be an accidental coinci- dence that the two species of Columba, which are destitute of an oil-gland, have an unusual number of tail-feathers, namely 16, and in this respect resemble Fantails. 14 See the two excellent editions pub- lished by Mr.J. M. Eaton in 1852 and 1859, entitled 'A Treatise on Fancy Pigeons. 184 CHAP. V. DOMESTIC PIGEONS. RACE VI.-TURBIT AND OWL. (Möven-Taube: Pigeons à cravate.) Feathers divergent along the front of the neck and breast; beak very short, vertically rather thick ; oesopha gus somewhat enlarged. Turbits and Owls differ from each other slightly in the shape of the head, in the former having a crest, and in the curvature of the beak, but they may be here conveniently grouped together. These pretty birds, some of which are very small, can be recognised at once by the feathers irregularly diverging, like a frill, along the front of the neck, in the same manner, but in a less degree, as along the back of the neck in the Jacobin. This bird has the remarkable habit of continually and momentarily inflating the upper part of the oesophagus, which causes a movement in the frill. When the oesophagus of a dead bird was inflated, it was seen to be larger than in other breeds, and not so distinctly separated from the crop. The Pouter inflates both its true crop and oesophagus; the Turbit inflates in a much less degree the oesophagus alone. The beak of the Turbit is very short, being 28 of an inch shorter than that of the rock-pigeon, proportionally with the size of their bodies; and in some owls brought by Mr. E. Vernon Harcourt from Tunis, it was even shorter. The beak is vertically thicker, and perhaps a little broader, in proportion to that of the rock-pigeon. RACE VII.-TUMBLERS. (Tümmler, or Burzel-Tauben: Culbutants.) During flight, tumble backwards ; body generally small ; beak generally short, sometimes excessively short and conical. This Race may be divided into four sub-races, namely, Persian, Lotan, Common, and Short-faced Tumblers. These sub-races in- clude many varieties which breed true. I have examined eight skeletons of various kinds of Tumblers: excepting in one imperfect and doubtful specimen, the ribs are only seven in number, whereas the rock-pigeon has eight ribs. Sub-race I. Persian Tumblers.--I have received a pair direct from Persia, from the Hon. C. Murray. They were rather smaller birds than the wild rock-pigeon, being about the size of the common CHAP. V. 185 DESCRIPTION OF BREEDS. dovecot-pigeon, white and mottled, slightly feathered on the feet, with the beak just perceptibly shorter than in the rock-pigeon. H.M. Fig. 22.--African Owl. 1. fiue Consul, Mr. Keith Abbott, informs me that the difference in the length of beak is so slight, that only practised Persian fanciers can 186 CHAP. V. DOMESTIC PIGEONS. distinguish these Tumblers from the common pigeon of the country. He informs me that they fly in flocks high up in the air and tumble well. Some of them occasionally appear to become giddy and tum- ble to the ground, in which respect they resemble some of our Tumblers. Sub-race II. Lotan, or Lowtun : Indian Ground Tumblers. These birds present one of the most remarkable inherited habits or instincts which have ever been recorded. The specimens sent to me from Madras by Sir. W. Elliot are white, slightly feathered on the feet, with the feathers on the head reversed ; and they are rather smaller than the rock or dovecot pigeon. The beak is proportion- ally only slightly shorter and rather thinner than in the rock-pigeon. These birds when gently shaken and placed on the ground immedi- ately begin tumbling head over heels, and they continue thus to tumble until taken up and soothed,—the ceremony being generally to blow in their faces, as in recovering a person from a state of hypnotism or mesmerism. It is asserted that they will continue to roll over till they die, if not taken up. There is abundant evidence with respect to these remarkable peculiarities; but what makes the case the more worthy of attention is, that the habit has been strictly inherited since before the year 1600, for the breed is distinctly de- scribed in the 'Ayeen Akbery.'15 Mr. Evans kept a pair in London, imported by Captain Vigne; and he assures me that he has seen them tumble in the air, as well as in the manner above described on the ground. Sir W. Elliot, however, writes to me from Madras, that he is informed that they tumble exclusively on the ground, or at a very small height above it. He also mentions another sub- variety, called the Kalmi Lotan, which begins to roll over if only touched on the neck with a rod or wand. Sub-race III. Common English Tumblers.—These birds have ex- actly the same habits as the Persian Tumbler, but tumble better. The English bird is rather smaller than the Persian, and the beak is plainly shorter. Compared with the rock-pigeon, and proportion- ally with the size of body, the beak is from 15 to nearly 2 of an inch shorter, but it is not thinner. There are several varieties of the common Tumbler, namely, Baldheads, Beards, and Dutch Rollers. I have kept the latter alive; they have differently shaped heads, 15 English translation, by F. Gladwin, 4th edition, vol. i. The habit of the Lo- tan is also described in the Persian trea- tise before alluded to, published about 100 years ago : at this date the Lotans were generally white and crested as at present. Mr. Blyth describes these birds in 'Annals and Mag. of Nat. Hist.,' vol. xiv., 1847, p. 104: he says that they "may be seen at any of the Calcutta bird-dealers." CHAP. V. 187 DESCRIPTION OF BREEDS. longer necks, and are feather-footed. They tumble to an extraor- dinary degree; as Mr. Brent remarks, 16 "Every few seconds over they "go; one, two, or three summersaults at a time. Here and there a bird “ gives a very quick and rapid spin, revolving like a wheel, though they sometimes lose their balance, and make a rather ungraceful "fall, in which they occasionally hurt themselves by striking some "object." From Madras I have received several specimens of the common Tumbler of India, differing slightly from each other in the length of their beaks. Mr. Brent sent me a dead specimen of a "House-tumbler," 17 which is a Scotch variety, not differing in gen- eral appearance and form of beak from the common Tumbler. Mr. Brent states that these birds generally begin to tumble" almost as soon as they can well fly; at three months old they tumble well, but still “fly strong; at five or six months they tumble excessively; and in “the second year they mostly give up flying, on account of their "tumbling so much and so close to the ground. Some fly round with “the flock, throwing a clean summersault every few yards, till they are obliged to settle from giddiness and exhaustion. These are "called Air Tumblers, and they commonly throw from twenty to “thirty summersaults in a minute, each clear and clean. I have one red cock that I have on two or three occasions timed by my watch "and counted forty summersaults in the minute. Others tumble differently. At first they throw a single summersault, then it is “double, till it becomes a continuous roll, which puts an end to fly- "ing, for if they fly a few yards over they go, and roll till they reach the ground. Thus I had one kill herself, and another broke “his leg. Many of them turn over only a few inches from the ground, "and will tumble two or three times in flying across their loft. These "are called House-Tumblers, from tumbling in the house. The act “of tumbling seems to be one over which they have no control, an "involuntary movement which they seem to try to prevent. I have "seen a bird sometimes in his struggles fly a yard or two straight upwards, the impulse forcing him backwards while he struggles "to go forwards. If suddenly startled, or in a strange place, they “seem less able to fly than if quiet in their accustomed loft.” These House-tumblers differ from the Lotan or Ground Tumbler of India, in not requiring to be shaken in order to begin tumbling. The breed has probably been formed merely by selecting the best com- -16 Journal of Horticulture,' Oct. 22, 1861, p. 76. 17 See the account of the House-tum- blers kept at Glasgow, in the Cottage Gardener,'1858, p. 285. Also Mr. Brent's paper, Journal of Horticulture,'1861, p. 76. 188 CHAP. V. DOMESTIC PIGEONS. Fig. 23.-Short-faced English Tumbler. mon Tumblers, though it is possible that they may have been crossed at some former period with Lotans. CHAP. V. 189 DESCRIPTION OF BREEDS. Sub-race IV. Short-faced Tumblers. These are marvellous birds and are the glory and pride of many fanciers. In their extremely short, sharp, and conical beaks, with the skin over the nostrils but little developed, they almost depart from the type of the Columbidæ. Their heads are nearly globular and upright in front, so that some fanciers say 18 " the head should resemble a cherry with a barley- corn stuck in it." These are the smallest kind of pigeons. Mr. Es quilant possessed a blue Baldhead, two years old, which when alive weighed, before feeding-time, only 6 oz. 5 drs. ; two others each weighed 7 oz. We have seen that a wild rock-pigeon weighed 14 oz. 2 drs, and a Runt 34 oz. 4 drs. Short-faced Tumblers have a remarkably erect carriage, with prominent breasts, drooping wings, and very small feet. The length of the beak from the tip to the feathered base was in one good bird only 4 of an inch ; in a wild rock-pigeon it was exactly double this length. As these Tumblers have shorter bodies than the wild rock-pigeons, they ought of course to have shorter beaks; but proportionally with the size of the body, the beak is 28 of an inch too short. So, again, the feet of this bird were actually .45 shorter, and proportionally .21 of an inch shorter, than the feet of the rock-pigeon. The middle toe has only twelve or thirteen, instead of fourteen or fifteen scutellæ. The primary wing- feathers are not rarely only nine instead of ten in number. The im- proved short-faced Tumblers have almost lost the power of tum- bling; but there are several authentic accounts of their occasionally tumbling There are several sub-varieties, such as Baldheads, Beards, Mottles, and Almonds; the latter are remarkable from not acquiring the perfectly-coloured plumage until they have moulted three or four times. There is good reason to believe that most of these sub-varieties, some of which breed truly, have arisen since the publication of Moore's treatise in 1735.19 Finally, in regard to the whole group of Tumblers, it is impossi- ble to conceive a more perfect gradation than I have now lying be- fore me, from the rock-pigeon, through Persian, Lotan, and Common Tumblers, up to the marvellous short-faced birds; which latter, no ornithologist, judging from mere external structure, would place in the same genus with the rock-pigeon. The differences between the successive steps in this series are not greater than those which may be observed between common dovecot-pigeons (C. livia) brought from different countries. 18 J. M. Eaton's Treatise on Pigeons,' 1852, p. 9. 19 J. M. Eaton's Treatise, edit. 1858, p. 76, 190 CHAP. V. DOMESTIC PIGEONS. RACE VIII.-INDIAN FRILL-BACK. Beak very short; feathers reversed. A specimen of this bird, in spirits, was sent to me from Madras by Sir W. Elliot. It is wholly different from the Frill-back often exhibited in England. It is a smallish bird, about the size of the common Tumbler, but has a beak in all its proportions like our short-faced Tumblers. The beak, measured from the tip to the feathered base, was only '46 of an inch in length. The feathers over the whole body are reversed or curl backwards. Had this bird occurred in Europe, I should have thought it only a monstrous variety of our improved Tumbler; but as short-faced Tumblers are not known in India, I think it must rank as a distinct breed. Proba- bly this is the breed seen by Hasselquist in 1757 at Cairo, and said to have been imported from India. RACE IX. JACOBIN. (Zopf or Perücken-Taube: Non- nains.) Feathers of the neck forming a hood; wings and tail long; beak moderately short. This pigeon can at once be recognised by its hood, almost enclos- ing the head and meeting in front of the neck. The hood seems to be merely an exaggeration of the crest of reversed feathers on the back of the head, which is common to many sub-varieties, and which in the Latz-taube 20 is in a nearly intermediate state between a hood and a crest. The feathers of the hood are elongated. Both the wings and tail are likewise much elongated ; thus the folded wing of the Jacobin, though a somewhat smaller bird, is fully 17 inch longer than in the rock-pigeon. Taking the length of the body without the tail as the standard of comparison, the folded wing, proportionally with the wings of the rock-pigeon, is 24 inches too long, and the two wings, from tip to tip, 51 inches too long. In disposition this bird is singularly quiet, seldom fying or moving about, as Bechstein and Riedel have likewise remarked in Ger- many. The latter author also notices the length of the wings and tail. The beak is nearly 2 of an inch shorter in proportion to the size of the body than in the rock-pigeon; but the internal gape of the mouth is considerably wider. 21 20 Neumeister, Taubenzucht,' Tab. 4, fig. i. 21 Riedel, Die Taubenzucht,' 1824, S. 26. Bechstein, Naturgeschichte Deutsch. lands,' Band iv. s. 36, 1795. CAP. V. 191 DESCRIPTION OF BREEDS. GROUP IV. The birds of this group may be characterised by their resemblance in all important points of structure, espe- cially in the beak, to the rock-pigeon. The Trumpeter forms the only well-marked race. Of the numerous other sub-races and varieties I shall specify only a few of the most distinct, which I have myself seen and kept alive. RACE X.-TRUMPETER. (Trommel-Taube; Pigeon tam- bour; glougou.) A tuft of feathers at the base of the beak curling for- ward ; feet much feathered ; voice very peculiar ; size ex- ceeding that of the rock-pigeon. This is a well- marked breed, with a peculiar voice, wholly unlike that of any other pigeon. The coo is rapidly repeated, and is con- tinued for several minutes; hence their name of Trumpeters. They are also characterised by a tuft of elongated feathers, which curls forward over the base of the beak, and which is possessed by no other breed. Their feet are so heavily feathered, that they almost appear like little wings. They are larger birds than the rock- pigeon, but their beak is of very nearly the same proportional size. Their feet are rather small. This breed was perfectly characterised in Moore's time, in 1735. Mr. Brent says that two varieties exist, which differ in size. RACE XI.-Scarcely differing in structure from the wild Columba livia. Sub-race I. Laughers. Size less than the Rock-pigeon ; voice very peculiar.-As this bird agrees in nearly all its proportions with the rock-pigeon, though of smaller size, I should not have thought it worthy of mention, had it not been for its peculiar voice--a cha- racter supposed seldom to vary with birds. Although the voice of the Laugher is very different from that of the Trumpeter, yet one of my Trumpeters used to utter a single note like that of the Laugher. I have kept two varieties of Laughers, which differed only in one variety being turn-crowned; the smooth-headed kind, for which I am indebted to the kindness of Mr. Brent, besides its peculiar note, used to coo in a singular and pleasing manner, which, 192 CHAP. V. DOMESTIC PIGEONS. independently, struck both Mr. Brent and myself as resembling that of the turtle dove. Both varieties come from Arabia. This breed was known by Moore in 1735. A pigeon which seems to say Yak- roo is mentioned in 1600 in the 'Ayeen Akbery,' and is probably the same breed. Sir W. Elliot has also sent me from Madras a pigeon called Yahui, said to have come from Mecca, which does not differ in appearance from the Laugher; it has “a deep melancholy voice, like Yahu, often repeated.” Yalu, yahu, means Oh God, Oh God; and Sayzid Mohammed Musari, in the treatise written about 100 years ago, says that these birds "are not flown, because they repeat the name of the Most High God." Mr. Keith Abbott, however, in- forms me that the common pigeon is called Yahoo in Persia. Sub-race II. Common Frill-back (Die Strupp-Taube). Beak rather longer than in the Rock-pigeon ; feathers reversed.--This is a con- siderably larger bird than the rock-pigeon, and with the beak, pro- portionally with the size of body, a little (viz. by .04 of an inch) longer. The feathers, especially on the wing-coverts, have their points curled upwards or backwards. Sub-race III. Nuns (Pigeons-coquilles).-— These elegant birds are smaller than the rock-pigeon. The beak is actually 17, and pro- portionally with the size of the body 1 of an inch shorter than in the rock-pigeons, although of the same thickness. In young birds the scutellæ on the tarsi and toes are generally of a leaden-black colour; and this is a remarkable character (though observed in a lesser degree in some other breeds), as the colour of the legs in the adult state is subject to very little variation in any breed. I have on two or three occasions counted thirteen or fourteen feathers in the tail ; this likewise occurs in the barely distinct breed called Helmets. Nuns are symmetrically coloured, with the head, primary wing-feathers, tail, and tail-coverts of the same colour, namely, black or red, and with the rest of the body white. This breed has retained the same character since Aldrovandi wrote in 1600. I have received from Madras almost similarly colored birds. Sub-race IV. Spots (Die Blass-Taube: Pigeons heurtés).—These birds are a very little larger than the rock-pigeon, with the beak a trace smaller in all its dimensions, and with the feet decidedly smaller. They are symmetrically coloured, with a spot on the fore- head, with the tail and tail-coverts of the same colour, the rest of the body being white. This breed existed in 1676,22 and in 1735 Moore remarks that they breed truly, as is the case at the present day. Sub-race V. Stallows.—These birds, as measured from tip to tip 22 Willoughby's 'Ornithology,' edited by Ray. CHAP. V. 193 DESCRIPTION OF BREEDS. of wing, or from the end of the beak to the end of the tail, exceed in size the rock-pigeon ; but their bodies are much less bulky; their feet and legs are likewise smaller. The beak is of about the same length, but rather slighter. Altogether their general appearance is considerably different from that of the rock-pigeon. Their heads and wings are of the same colour, the rest of the body being white. Their flight is said to be peculiar. This seems to be a modern breed, which, however, originated before the year 1795 in Germany. for it is described by Bechstein. Besides the several breeds now described, three or four other very distinct kinds existed lately, or perhaps still exist, in Germany and France. Firstly, the Karmeliten, or Carme Pigeon, which I have not seen; it is described as of small size with very short legs, and with an extremely short beak. Secondly, the Finnikin, which is now extinct in England. It had, according to Moore's 23 treatise, pub- lished in 1735, a tuft of feathers on the hinder part of the head, which ran down its back not unlike a horse's mane. “When it is salacious it rises over the hen and turns round three or four times, flapping its wings, then reverses and turns as many times the other way." The Turner, on the other hand, when it "plays to the female, turns only one way." Whether these extraordinary state ments may be trusted I know not; but the inheritance of any habit may be believed, after what we have seen with respect to the Ground-tumbler of India. MM. Boitard and Corbié describe a pi. geon 24 which has the singular habit of sailing for a considerable time through the air, without flapping its wings, like a bird of prey. The confusion is inextricable, from the time of Aldrovandi in 1600 to the present day, in the accounts published of the Draijers, Smiters, Finnikins, Turners, Claquers, &c., which are all remarkable from their manner of flight. Mr. Brent informs me that he has seen one of these breeds in Germany with its wing-feathers injured from having been so often struck together, but he did not see it flying. An old stuffed face of a Finnikin in the British Museum presents no well-marked character. Thirdly, a singular pigeon with a forked tail is mentioned in some treatises; and as Bechstein 25 briefly describes and figures this bird, with a tail" having completely the structure of that of the house-swallow," it must once have existed, for Bechstein was far too good a naturalist to have confounded any distinct species with the domestic pigeon. Lastly, an extraordinary pigeon imported from Belgium has lately been exhibited at the 23 J. M. Eaton's edition (1858) of Moore, p. 98. 24 Pigeon Patu Plongeur. Les Pi- geons,' &c., p. 165. 25 Naturgesch, Deutschlands, Band iv. s. 47. 9 194 CHAP, V. DOMESTIC PIGEONS, Philoperisteron Society in London,26 which “conjoins the colour of an archangel with the head of an owl or barb, its most striking peculiarity being the extraordinary length of the tail and wing- feathers, the latter crossing beyond the tail, and giving to the bird the appearance of a gigantic swift (Cypselus), or long-winged hawk." Mr. Tegetmeier informs me that this bird weighed only 10 ounces, but in length was 154 inches from tip of beak to end of tail, and 321 inches from tip to tip of wing ; now the wild rock- pigeon weighs 141 ounces, and measures from tip of beak to end of tail 15 inches, and from tip to tip of wing only 264 inches. I have now described all the domestic pigeons known to me, and have added a few others on reliable authority. I have classed them under four Groups, in order to mark their affinities and degrees of difference; but the third group is artificial. The kinds examined by me form eleven races, which include several sub-races; and even these latter present differences that would certainly have been thought of specific value if observed in a state of nature. The sub-races likewise include many strictly in- herited varieties; so that altogether there must exist, as previously stated, above 150 kinds which can be dis- tinguished, though generally by characters of extremely slight importance. Many of the genera of the Colum- bidæ, which are admitted by ornithologists, do not dif- fer in any great degree from each other; taking this into consideration, there can be no doubt that several of the most strongly characterised domestic forms, if found wild, would have been placed in at least five new gene- ra. Thus, a new genus would have been formed for the reception of the improved English Pouter: a second genus for Carriers and Runts; and this would have been a wide or comprehensive genus, for it would have ad- mitted common Spanish Runts without any wattle, short- beaked Runts like the Tronfo, and the improved English Carrier: a third genus would have been formed for the Barb: a fourth for the Fantail: and lastly, a fifth for the 26 Mr, W. B. Tegetmeier, Journal of Horticulture,' Jan. 20th, 1863, p. 58. CAP. V. 195 DESCRIPTION OF BREEDS. short-beaked, not-wattled pigeons, such as Turbits and short-faced Tumblers. The remaining domestic forms might have been included in the same genus with the wild rock-pigeon. Individual Variability; Variations of a remarkable nature. The differences which we have as yet considered are characteristic of distinct breeds; but there are other dif- ferences, either confined to individual birds, or often ob- served in certain breeds but not characteristic of them. These individual differences are of importance, as they might in most cases be secured and accumulated by man's power of selection; and thus an existing breed might be greatly modified or a new one formed. Fanciers notice and select only those slight differences which are exter- nally visible; but the whole organisation is so tied to- gether by correlation of growth, that a change in one part is frequently accompanied by other changes. For our purpose, modifications of all kinds are equally im- portant, and, if affecting a part which does not common- ly vary, are of more importance than a modification in some conspicuous part. At the present day any visible deviation of character in a well-established breed is re- jected as a blemish; but it by no means follows that at an early period, before well-marked breeds had been formed, such deviations would have been rejected; on the contrary, they would have been eagerly preserved as presenting a novelty, and would then have been slowly augmented, as we shall hereafter more clearly see, by the process of unconscious selection. I have made numerous measurements of the various parts of the body in the several breeds, and have hardly ever found them quite the same in birds of the same breed, -the differences being greater than we commonly meet with in wild species. To begin with the primary feathers of the wing and tail ; but I may first mention, as some readers may not be aware of the fact, that the number of the 196 CHAP. V. DOMESTIC PIGEONS. primary wing and tail feathers in wild birds is generally constant, and characterises, not only whole genera, but even whole families. When the tail-feathers are unusually numerous, as for instance in the swan, they are apt to be variable in number; but this does not apply to the several species and genera of the Columbidæ, which never (as far as I can hear) have less than twelve or more than sixteen tail-feathers; and these numbers characterise, with rare ex- ception, whole sub-families.27 The wild rock-pigeon has twelve tail- feathers. With Fantails, as we have seen, the number varies from fourteen to forty-two. In two young birds in the same nest I counted twenty-two and twenty-seven feathers. Pouters are very liable to have additional tail-feathers, and I have seen on several oc- casions fourteen or fifteen in my own birds. Mr. Bult had a speci- men, examined by Mr. Yarrell, with seventeen tail-feathers. I had a Nun with thirteen, and another with fourteen tail-feathers; and in a Helmet, a breed barely distinguishable from the Nun, I have counted fifteen, and have heard of other such instances. On the other hand, Mr. Brent possessed a Dragon, which during its whole life nover had more than ten tail-feathers; and one of my Dragons, de- scended from Mr. Brent's, had only eleven. I have seen a Baldhead- Tumbler with only ten ; and Mr. Brent had an Air-Tumbler with the same number, but another with fourteen tail-feathers. Two of these latter Tumblers, bred by Mr. Brent, were remarkable,-one from having the two central tail-feathers a little divergent, and the other from having the two outer feathers longer by three-eighths of an inch than the others; so that in both cases the tail exhibited a tendency, but in different ways, to become forked. And this shows us how a swallow-tailed breed, like that described by Bechstein, might have been formed by careful selection. With respect to the primary wing-feathers, the number in the Co- lumbidæ, as far as I can find out, is always nine or ten. In the rock- pigeon it is ten; but I have seen no less than eight short-faced Tumblers with only nine primaries, and the occurrence of this number has been noticed by fanciers, owing to ten flight feathers of a white colour being one of the points in Short-faced Baldhead- Tumblers. Mr. Brent, however, had an Air-Tumbler (not short- faced) which had in both wings eleven primaries. Mr. Corker, the eminent breeder of prize Carriers, assures me that some of his birds 27 Coup-d'oeil sur l'Ordre des Pigeons, par C. L. Bonaparte (Comptes Rendus), 1954-55. Mr. Blyth, in ' Annals of Nat. Hist.,' vol. xix., 1847, p. 41, mentions, as a very singular fact, that of the two species of Ectopistes, which are nearly allied to each other, one should have fourteen tail-feathers, while the other, the passenger pigeon of North America, should possess but the usual number- twelve." CHAP. V. 197 INDIVIDUAL VARIABILITY. had eleven primaries in both wings. I have seen eleven in one wing in two Pouters. I have been assured by three fanciers that they have seen twelve in Scanderoons; but as Neumeister asserts that in the allied Florence Runt the middle flight-feather is often double, the number twelve may have been caused by two of the ten primaries having each two shafts to a single feather. The second- ary wing-feathers are difficult to count, but the number seems to vary from twelve to fifteen. The length of the wing and tail rela- tively to the body, and of the wings to the tail, certainly varies; I have especially noticed this in Jacobins. In Mr. Bult's magnificent collection of Pouters, the wings and tail varied greatly in length; and were sometimes so much elongated that the birds could hardly play upright. In the relative length of the few first primaries I have observed only a slight degree of variability. Mr. Brent in- forms me that he has observed the shape of the first feather to vary very slightly. But the variation in these latter points is extremely slight compared with what may often be observed in the natural species of the Columbidæ. In the beak I have observed very considerable differences in birds of the same breed, as in carefully bred Jacobins and Trumpeters. In Carriers there is often a conspicuous difference in the degree of attenuation and curvature of the beak. So it is indeed in many breeds: thus I had two strains of black Barbs, which evidently dif- fered in the curvature of the upper mandible. In width of mouth I have found a great difference in two swallows. In Fantails of first- rate merit I have seen some birds with much longer and thinner necks than in others. Other analogous facts could be given. We have seen that the oil-gland is aborted in all Fantails (with the ex- ception of the sub-race from Java), and, I may add, so hereditary is this tendency to abortion, that some, although not all, of the mon- grels from the Fantail and Pouter had no oil-gland ; in one Swallow out of many which I have examined, and in two Nuns, there was no oil-gland. The number of the scutellæ on the toes often varies in the same breed, and sometimes even differs on the two feet of the same indi- vidual; the Shetland rock-pigeon has fifteen on the middle, and six on the hinder toe; whereas I have seen a Runt with sixteen on the middle, and eight on the hind toe ; and a short-faced Tumbler with only twelve and five on these same toes. The rock-pigeon has no sensible amount of skin between its toes; but I possessed a Spot and a Nun with the skin extending for a space of a quarter of an inch from the fork, between the two inner toes. On the other hand, as will hereafter be more fully shown, pigeons with feathered feet very generally have the bases of their outer toes connected by skin. I 198 CHAP. V. DOMESTIC PIGEONS. had a red Tumbler, which had a coo unlike that of its fellows, ap- proaching in tone to that of the Laugher: this bird had the habit, to a degree which I never saw equalled in any other pigeon, of often walking with its wings raised and arched in an elegant manner. I need say nothing on the great variability, in almost every breed, in size of body, in colour, in the feathering of the feet, and in the feathers on the back of the head being reversed. But I may men- tion a remarkable Tumbler 28 exhibited at the Crystal Palace, which had an irregular crest of feathers on its head, somewhat like the tuft on the head of the Polish fowl. Mr. Bult reared by accident a hen Jacobin with the feathers on the thigh so long as to reach the ground, and a cock having, but in a lesser degree, the same pecu- liarity: from these two birds he bred others similarly characterised, which were exhibited at the Philoperisteron Club. I bred a mon- grel pigeon which had fibrous feathers, and the wing and tail- feathers so short and imperfect that the bird could not fly even a foot in height. There are many singular and inherited peculiarities in the plumage of pigeons: thus Almond-Tumblers do not acquire their perfect mottled feathers until they have moulted three or four times: the Kite-Tumbler is at first brindled black and red with a barred appearance, but when “it throws its nest feathers it becomes almost black, generally with a bluish tail, and a reddish colour on the inner webs of the primary wing feathers." 29 Neu- meister describes a breed of a black colour with white bars on the wing and a white crescent-shaped mark on the breast; these marks are generally rusty-red before the first moult, but after the third or fourth moult they undergo a change; the wing-feathers and the crown of the head likewise then become white or grey,s It is an important fact, and I believe there is hardly an exception to the rule, that the especial characters for which each breed is valued are eminently variable: thus, in the Fantail, the number and direction of the tail-feath- ers, the carriage of the body, and the degree of trembling 28 Described and figured in the Poul- try Chronicle,' vol. iii., 1855, p. 82. 29 The Pigeon Book,' by Mr. B. P. Brent, 1859, p. 41. 30 Die Staarhälsige Taube, Das Ganze, &c.,' s. 21, tab. i. fig. 4. CHAP. V. 199 SINGULAR VARIATIONS. are all highly variable points; in Pouters, the degree to which they pout, and the shape of their inflated crops; in the Carrier, the length, narrowness, and curvature of the beak, and the amount of wattle; in Short-faced Tumblers, the shortness of the beak, the prominence of the forehead, and general carriage, and in the Almond Tumbler the colour of the plumage; in common Tumblers, the manner of tumbling; in the Barb, the breadth and shortness of the beak and the amount of eye-wattle; in Runts, the size of body; in Turbits, the frill; and lastly in Trumpet- ers, the cooing, as well as the size of the tuft of feathers over the nostrils. These, which are the distinctive and selected characters of the several breeds, are all eminently variable. There is another interesting fact with respect to the character of the different breeds, namely, that they are often most strongly displayed in the male bird. In Car- riers, when the males and females are exhibited in sepa- rate pens, the wattle is plainly seen to be much more de- veloped in the males, though I have seen a hen Carrier belonging to Mr. Haynes heavily wattled. Mr. Teget- meier informs me that, in twenty Barbs in Mr. P. H. Jones's possession, the males had generally the largest eye-wattles; Mr. Esquilant also believes in this rule, but Mr. H. Weir, a first-rate judge, entertains some doubt on the subject. Male Pouters distend their crops to a much greater size than do the females; I have, however, seen a hen in the possession of Mr. Evans which pouted excel- lently; but this is an unusual circumstance. Mr. Harri- son Weir, a successful breeder of prize Fantails, informs me that his cock birds often have a greater number of tail-feathers than the hens. Mr. Eaton asserts 92 that, if a cock and hen Tumbler were of equal merit, the hen would be worth double the money; and as pigeons al- 31 A Treatise on the Almond Tum- bler,' by J. M. Eaton, 1852, p. 8, et pas- sim. 32 A Treatise, &c., p. 10. 200 CHAP. V. DOMESTIC PIGEONS. 33 ways pair, so that an equal number of both sexes is ne- cessary for reproduction, this seems to show that high merit is rarer in the female than in the male. In the de- velopment of the frill in Turbits, of the hood in Jacobins, of the tuft in Trumpeters, of tumbling in Tumblers, there is no difference between the males and females. I may here add a rather different case, namely, the existence in France of a wine-coloured variety of the Pouter, in which the male is generally chequered with black, whilst the female is never so chequered. Dr. Chapuis also re- marks 34 that in certain light-coloured pigeons the males have their feathers striated with black, and these striæ increase in size at each moult, so that the male ultimately becomes spotted with black. With Carriers, the wattle, both on the beak and round the eyes, and with Barbs that round the eyes, goes on increasing with age. This augmentation of character with advancing age, and more especially the difference between the males and females in the above-mentioned several respects, are highly re- markable facts, for there is no sensible difference at any age between the two sexes in the aboriginal rock-pigeon; and rarely any such difference throughout the whole fam- ily of the Columbidæ.36 Osteological Characters. In the skeletons of the various breeds there is much variability; and though certain differences occur frequent- ly, and others rarely, in certain breeds, yet none can be 33 Boitard and Corbié, 'Les Pigeons, &c., 1824, p. 173. 34 'Le Pigeon Voyageur Belge,' 1865, p. 87. 35 Prof. A. Newton (Proc. Zoolog. Soc.,' 1865, p. 716) remarks that he knows no species which presents any re- markable sexual distinction ; but it is stated "Naturalist's Library, Birds,' vol. ix. p. 117) that the excrescence at the base of the beak in the Carpophaga oceanica is sexual: this, if correct, is an interesting point of analogy with the male Carrier, which has the wattle at the base of its beak so much more developed than in the female. Mr. Wallace informs me that in the sub-family of the Treronidæ the sexes often differ in vividness of colour. CHAP. V. 201 OSTEOLOGICAL DIFFERENCES. A said to be absolutely characteristic of any breed. Con- sidering that strongly marked domestic races have been formed chiefly by man's power of selection, we ought not to expect to find great and constant differences in the skeleton; for fanciers can neither see, nor do they care for, modifications of structure in the internal framework. Nor ought we to ex- pect changes in the skeletons from changed habits of life; as every facili- ty is given to the most distinct breeds to follow the same habits, and the much modified races allowed to wander abroad and B are never с D Fig. 24.—Skulls of Pigeons, viewed laterally, of natural size. A. Wild Rock- pigeon, Columba livia. B. Short-faced Tumbler. C. English Carrier. D. Bagadotten Carrier. procure their own food in various ways. Moreover, I 202 CHAP. V. DOMESTIC PIGEONS. find, on comparing the skeletons of Columba livia, oenas, palumbus, and turtur, which are ranked by all systema- tists in two or three distinct though allied genera, that the differences are extremely slight, certainly less than between the skeletons of some of the most distinct do- mestic breeds. How far the skeleton of the wild rock- pigeon is constant I have no means of judging, as I have examined only two. Skull.—The individual bones, especially those at the base, do not differ in shape. But the whole skull, in its proportions, outline, and relative direction of the bones, differs greatly in some of the breeds, as may be seen by comparing the figures of (A) the wild rock-pigeon, (B) the short-faced tumbler, (C) the English carrier, and (D) the Bagadotten carrier (of Neumeister), all drawn of the natural size and viewed laterally. In the carrier, besides the elongation of the bones of the face, the space between the orbits is proportionally a little narrower than in the rock-pigeon. In the Bagadotten the upper mandible is remarkably arched, and the premaxillary bones are pro- portionally broader. In the short-faced tumbler the skull is more globular; all the bones of the face are much shortened, and the front of the skull and descending nasal bones are almost perpendicular; the maxillo-jugal arch and premaxillary bones form an almost straight line; the space between the prominent edges of the eye-orbits is А B Fig. 25-Lower jaws, seen from above, of natural size. A. Rock-pigeon. B. Runt. C. Barb. CHAP. V. 203 OSTEOLOGICAL DIFFERENCES. depressed. In the barb the premaxillary bones are much short- ened, and their anterior portion is thicker than in the rock-pigeon, as is the lower part of the nasal bone. In two nuns the ascending branches of the premaxillaries, near their tips, were somewhat at- tenuated, and in these birds, as well as in some others, for instance in the spot, the occipital crest over the foramen was considerably more prominent than in the rock-pigeon. In the lower jaw, the articular surface is proportionally smaller in many breeds than in the rock-pigeon; and the vertical diameter more especially of the outer part of the articular surface is consid- ably shorter. May not this be accounted for by the lessened use of the jaws, owing to nutritious food having been given during a long period to all highly improved pigeons? In runts, carriers, and barbs (and in a lesser degree in several breeds), the whole side A B Fig. 27.- Lateral view of jaws, of natural size. A. Rock-pigeon. B. Short-faced Tumbler. C. Bagadotten Carrier. of the jaw near the articular end is bent inwards in a highly remarkable manner; and the superior margin of the ramus, be- yond the middle, is reflexed in an equally Fig. 26.-Skull of Runt, seen remarkable manner, as may be seen in the from above, of natural size, accompanying figures, in comparison with showing the reflexed mar- the jaw of the rock-pigeon. This reflexion gin of the distal portion of of the upper margin of the lower jaw is the lower jaw. plainly connected with the singularly wide gape of the mouth, as has been described in runts, carriers, and barbs. The reflexion is well shown in fig. 26 of the head of a runt seen from above; here a wide open space may be observed on each 204 CHAP. V. DOMESTIC PIGEONS. side, between the edges of the lower jaw and of the premaxillary bones. In the rock-pigeon, and in several domestic breeds, the edges of the lower jaw on each side come close up to the premaxil- lary bones, so that no open space is left. The degree of downward curvature of the distal half of the lower jaw also differs to an ex- traordinary degree in some breeds, as may be seen in the drawings (fig. A) of the rock-pigeon, (B) of the short-faced tumbler, and (C) of the Bagadotten carrier of Neumeister. In some runts the symphy- sis of the lower jaw is remarkably solid. No one would readily have believed that jaws differing so greatly in the several above- specified points could have belonged to the same species. Vertebra. All the breeds have twelve cervical vertebræ.36 But in a Bussorah carrier from India, the twelfth vertebra carried a small rib, a quarter of an inch in length, with a perfect double arti- culation, The dorsal vertebræ are always eight. In the rock-pigeon all eight bear ribs; the eighth rib being very thin, and the seventh having no process. In pouters all the ribs are extremely broad, and, in three out of four skeletons examined by me, the eighth rib was twice or even thrice as broad as in the rock-pigeon; and the seventh pair had distinct processes. In many breeds there are only seven ribs, as in seven out of eight skeletons of various tumblers, and in several ske- letons of fantails, turbits, and nuns. In all these breeds the seventh pair was very small, and was destitute of processes, in which respect it differed from the same rib in the rock-pigeon. In one tumbler, and in the Bussorah carrier, even the sixth pair had no process. The hypapophysis of the second dorsal vertebra varies much in de- velopment; being sometimes (as in several, but not all tumblers) nearly as prominent as that of the third dorsal vertebra; and the two hypapophyses together tend to form an ossified arch. The de- velopment of the arch, formed by the hypapophyses of the third and fourth dorsal vertebra, also varies considerably, as does the size of the hypapophysis of the fifth vertebra. The rock-pigeon has twelve sacral vertebrae ; but these vary in number, relative size, and distinctness in the different breeds. In pouters, with their elongated bodies, there are thirteen or even four- teen, and, as we shall immediately see, an additional number of caudal vertebræ. In runts and carriers there is generally the pro- per number, namely twelve; but in one runt, and in the Bussorah 36 I am not sure that I have designa- ted the different kinds of vertebræ cor- rectly; but I observe that different ana- tomists follow in this respect different rules, and, as I use the same terms in the comparison of all the skeletons, this, I hope, will not signify. CHAP. V. 205 OSTEOLOGICAL DIFFERENCES. carrier, there were only eleven. In tumblers there are either eleven, twelve, or thirt en sacral vertebræ. The caudal vertebra are seven in number in the rock-pigeon. In fantails, which have their tails so largely developed, there are either eight or nine, and apparently in one case ten, and they are a little longer than in the rock-pigeon, and their shape varies considerably. Pouters, also, have eight or nine caudal vertebra. I have seen eight in a nun and jacobin, Tumblers, though such small birds, always have the normal number seven ; as have carriers, with one excep- tion, in which there were only six. The following table will serve as a summary, and will show the most remarkable deviations in the number of the vertebræ and ribs which I have observed :- Rock Pigeon. Pouter, from Mr. Bult. Tumbler, Dutch Roller. Bussorah Carrier, Cervical Vertebræ 12 12 12 12 The 12th bore a small rib. Dorsal Vertebræ 8 8 8. 8 Ribs .. 8 8 7 7 The 6th pair with The 6th and The 6th and 7th The 6th and processes, the 7th 7th pair with pair without 7th pair pair without a processes. processes. without pro- process. cesses, Sacral Vertebræ 12 14 11 11 Caudal Vertebræ 7 8 or 9 7 7 Total Vertebrae 39 42 or 43 38 38 The pelvis differs very little in any breed. The anterior margin of the ilium, however, is sometimes a little more equally rounded on both sides than in the rock-pigeon. The ischium is also frequently rather more elongated. The obturator-notch is sometimes, as in many tumblers, less developed than in the rock-pigeon. The ridges on the ilium are very prominent in most runts. In the bones of the extremities I could detect no difference, except in their proportional lengths; for instance, the metatarsus in a pout- er was 1.65 inch, and in a short-faced tumbler only .95 in length; and this is a greater difference than would naturally follow from their differently-sized bodies; but long legs in the pouter, and small feet in the tumbler, are selected points. In some pouters the scapula is rather straighter, and in some tumblers it is straighter, with the apex less elongated, than in the rock-pigeon: in the woodcut, fig. 28, the scapulæ of the rock-pigeon (A), and of a short-faced tumbler 206 CHAP. V. DOMESTIC PIGEONS. B er. B (B), are given. The processes at the sum- mit of the coracoid, which receive the ex- tremities of the furcula, form a more perfect cavity in some tum- blers than in the rock-pigeon : in pouters these pro- cesses are larger A and differently shaped, and the ex- terior angle of the extremity of the coracoid, which is articulated to the A sternum, is squar- B Fig. 28. -Scapulæ, of natu- ral size. A. Rock-pigeon. The two arms of B. Short-faced Tumbler. the furcula in pout- ers diverge less, proportionally to their length, than in the rock-pigeon ; and the symphysis is more so- lid and pointed. In fantails the degree of di- vergence of the two arms varies in a remark- С able manner. In fig. 29, B and c represent the furculæ of two fantails; and it will be seen that the divergence in B is rather less even than in the furcula of the short-faced, small-sized tumbler (A); whereas the diver- gence in c equals that in a rock-pigeon, or in the pouter (D), though the latter is a much larger bird. The extremities of the furcu- la, where articulated to the coracoids, vary considerably in outline. In the sternum the differences in form are slight, except in the size and outline of the perforations, which, both in the larger and lesser sized breeds, are sometimes small. These perforations, also, are sometimes eith- er nearly circular, or elongated, as is often the case with carriers. The posterior perfo- rations occasionally are not complete, being Fig. 29.-Furculæ, of natu- left open posteriorly. The marginal apophy- ral size. A. Short-faced ses forming the anterior perforations vary Tumbler. B and C. Fan- tails. D. Pouter. greatly in development. The degree of D CHAP. V. 207 CORRELATION OF GROWTH. convexity of the posterior part of the sternum differs much, being sometimes almost perfectly flat. The manubrium is rather more prominent in some individuals than in others, and the pore imme- diately under it varies greatly in size. Correlation of Growth.—By this term I mean that the whole organisation is so connected, that when one part varies, other parts vary; but which of two correlated variations ought to be looked at as the cause and which as the effect, or whether both result from some common cause, we can seldom or never tell. The point of interest for us is that, when fanciers, by the continued selection of slight variations, have largely modified one part, they often unintentionally produce other modifications. For instance, the beak is readily acted on by selection, and, with its increased or diminished length, the tongue in- creases or diminishes, but not in due proportion; for, in a barb and short-faced tumbler, both of which have very short beaks, the tongue, taking the rock-pigeon as the standard of comparison, was proportionally not shorten- ed enough, whilst in two carriers and in a runt the tongue, proportionally with the beak, was not lengthened enough. Thus, in a first-rate English carrier, in which the beak from the tip to the feathered base was exactly thrice as long asin a first-rate short-faced tumbler, the tongue was only a little more than twice as long. But the tongue varies in length independently of the beak: thus, in a carrier with a beak 1.2 inch in length, the tongue was •67 in length; whilst in a runt which equalled the carrier in length of body and in stretch of wings from tip to tip, the beak was .92 whilst the tongue was •73 of an inch in length, so that the tongue was actually longer than in the carrier with its long beak. The tongue of the runt was also very broad at the root. Of two runts, one had its beak longer by *23 of an inch, whilst its tongue was shorter by '14 than in the other. With the increased or diminished length of the beak the length of the slit forming the external orifice of the 208 CHAP. V. DOMESTIC PIGEONS. nostrils varies, but not in due proportion, for, taking the rock-pigeon as the standard, the orifice in a short-faced tumbler was not shortened in due proportion with its very short beak. On the other hand (and this could not have been anticipated), the orifice in three English carriers, in the Bagadotten carrier, and in a runt (pigeon cygne), was longer by above the tenth of an inch than would follow from the length of the beak proportionally with that of the rock-pigeon. In one carrier the orifice of the nostrils was thrice as long as in the rock-pigeon, though in body and length of beak this bird was not nearly double the size of the rock-pigeon. This greatly increased length of the orifice of the nostrils seems to stand partly in cor- relation with the enlargement of the wattled skin on the upper mandible and over the nostrils; and this is a cha- racter which is selected by fanciers. So again, the broad, naked, and wattled skin round the eyes of carriers and barbs is a selected character; and in obvious correlation with this, the eyelids measured longitudinally, are pro- portionally more than double the length of those of the rock-pigeon. The great difference (see woodcut No. 27) in the cur- vature of the lower jaw in the rock-pigeon, the tumbler, and Bagadotten carrier, stands in obvious relation to the curvature of the upper jaw, and more especially to the an- gle formed by the maxillo-jugal arch with the premaxil- lary bones. But in carriers, runts, and barbs the singu- lar reflexion of the upper margin of the middle part of the lower jaw (see woodcut No. 25) is not strictly correlated with the width or divergence (as may be clearly seen in woodcut No. 26) of the premaxillary bones, but with the breadth of the horny and soft parts of the upper mandible, which are always overlapped by the edges of the lower mandible. In pouters, the elongation of the body is a selected cha- racter, and the ribs, as we have seen, have generally be- come very broad, with the seventh pair furnished with CHAP. V. 209 CORRELATION OF GROWTH. processes; the sacral and caudal vertebræ have been aug- mented in number; the sternum has likewise increased in length (but not in the depth of the crest) by 4 of an inch more than would follow from the greater bulk of the body in comparison with that of the rock-pigeon. In fantails, the length and number of the caudal vertebræ have in- creased. Hence, during the gradual progress of varia- tion and selection, the internal bony frame-work and the external shape of the body have been, to a certain extent, modified in a correlated manner. Although the wings and tail often vary in length in- dependently of each other, it is scarcely possible to doubt that they generally tend to become elongated or short- ened in correlation. This is well seen in jacobins, and still more plainly in runts, some varieties of which have their wings and tail of great length, whilst others have both very short. With jacobins, the remarkable length of the tail and wing-feathers is not a character which is intentionally selected by fanciers; but fanciers have been trying for centuries, at least since the year 1600, to in- crease the length of the reversed feathers on the neck, so that the hood may more completely enclose the head; and it may be suspected that the increased length of the wing and tail-feathers stands in correlation with the in- creased length of the neck-feathers. Short-faced tumblers have short wings in nearly due proportion with the re- duced size of their bodies; but it is remarkable, seeing that the number of the primary wing-feathers is a con- stant character in most birds, that these tumblers gene- rally have only nine instead of ten primaries. I have myself observed this in eight birds; and the Original Columbarian Society $reduced the standard for bald-head tumblers from ten to nine white flight-feathers, thinking it unfair that a bird which had only nine feathers should be disqualified for a prize because it had not ten white 37 J. M. Eaton's Treatise, edit. 1858, p. 78. 210 CHAP. V. DOMESTIC PIGEONS. flight-feathers. On the other hand, in carriers and runts, which have large bodies and long wings, eleven primary feathers have occasionally been observed. Mr. Tegetmeier has informed me of a curious and in- explicable case of correlation, namely, that young pigeons of all breeds, which when mature become white, yellow, silver, (i.e. extremely pale blue), or dun-coloured, are born almost naked; whereas other coloured pigeons are born well clothed with down. Mr. Esquilant, however, has observed that young dun carriers are not so bare as young dun barbs and tumblers. Mr. Tegetmeier has seen two young birds in the same nest, produced from differently coloured parents, which differed greatly in the degree to which they were at first clothed with down. I have observed another case of correlation which at first sight appears quite inexplicable, but on which, as we shall see in a future chapter, some light can be thrown by the law of homologous parts varying in the same manner. The case is, that, when the feet are much feathered, the roots of the feathers are connected by a web of skin, and apparently in correlation with this the two outer toes become connected for a considerable space by skin. I have observed this in very many specimens of pouters, trumpeters, swallows, roller-tumblers (like- wise observed in this breed by Mr. Brent), and in a lesser degree in other feather-footed pigeons. The feet of the smaller and larger breeds are of course much smaller or larger than those of the rock-pigeon; but the scutellæ or scales covering the toes and tarsi have not only decreased or increased in size, but likewise in number. To give a single instance, I have counted eight scutellä on the hind toe of a runt, and only five on that of a short-faced tumbler. With birds in a state of nature the number of the scutellæ on the feet is usually a constant character. The length of the feet and the length of the beak apparently stand in correlation; but CHAP. V. 211 ON THE EFFECTS OF DISUSE. as disuse apparently has affected the size of the feet, this case may come under the following discussion. On the Effects of Disuse. In the following discussion on the relative proportions of the feet, sternum, furcula, scapulæ, and wings, I may premise, in order to give some confidence to the reader, that my ineasurements were all made in the same manner, and that all the measurements of the external parts were made without the least inten- tion of applying them to the following purpose. I measured most of the birds which came into my possession, from the feathered base of the beak (the length of beak itself being so variable) to the end of the tail, and to the oil-gland, but unfortu- nately (except in a few cases) not to the root of the tail ; I measured each bird from the extreme tip to tip of wing; and the length of the terminal folded part of the wing, from the extremity of the primaries to the joint of the radius. I measured the feet without the claws, from the end of the middle toe to the end of the hind toe; and the tarsus together with the middle toe. I have taken in every case the mean measurement of two wild rock-pigeons from the Shetland Islands, as the standard of comparison. The following table shows the actual length of the feet in each bird ; and the difference between the length which the feet ought to have had according to the size of body of each, in comparison with the size of body and length of feet of the rock-pigeon, calculated (with a few specified exceptions) by the standard of the length of the body from the base of the beak to the oil-gland. I have preferred this standard, owing to the variability of the length of tail. But I have made similar calculations, taking as the standard the length from tip to tip of wing, and likewise in most cases from the base of the beak to the end of the tail; and the result has always been closely similar. To give an example: the first bird in the table, being a short-faced tumbler, is much smaller than the rock-pigeon, and would naturally have shorter feet; but it is found on calculation to have feet too short by 11 of an inch, in comparison with the feet of the rock-pigeon, relatively to the size of the body in these two birds, as measured from the base of beak to the oil-gland. So again, when this same tumbler and the rock-pigeon were compared by the length of their wings, or by the extreme length of their bodies, the feet of the tumbler were likewise found to be too short in very nearly the same proportion. I am well aware that the measure- 212 CHAP. V. DOMESTIC PIGEONS. ments pretend to greater accuracy than is possible, but it was less trouble to write down the actual measurements given by the com- passes in each case than an approximation. TABLE I. Pigeons with their beaks generally shorter than that of the Rock- pigeon, proportionally with the size of their bodies. Name of Breed. Actual length of Feet. Difference between actual and calculated length of feet, in proportion to length of feet and size of body in the Rock-pigeon. Wild rock-pigeon (mean measure- ment).. 2.02 Too short by Too long by . . 1:57 1.60 1.75 Short-faced Tumbler, bald-head.. almond .. Tumbler, red magpie red common (by standard to end of tail) common bald-head roller .. Turbit 1.85 Jacobin Trumpeter, white mottled.. Fantail (by standard to end of tail).. 0.11 0.16 0.19 0.07 0:18 0.06 0.17 0.01 0.15 0.02 0:06 0.18 0.15 0.15 0.0 0.19 0.03 0.02 0.16 0.03 0.0 1.85 1.80 1.5 1.80 1.84 1.90 2:02 1.95 1.85 1.95 1.95 1.80 2.10 1.82 1.65 2.00 2.00 1.90 1.90 1.85 2.00 2.42 2 30 2.17 crested var. Indian Frill-back English Frill back Nun.. Laugher Barb 0.03 Spot 0:02 . 0.07 0.18 Swallow, red blue Pouter German. Bussorah Carrier 0.03 0.11 0.09 0.09 Number of specimens .. 28 22 5 CHAP. V. 213 ON THE EFFECTS OF DISUSE. TABLE II. Pigeons with their beaks longer than that of the Rock-pigeon, proportionally with the size of their bodies. Name of Breed. Actual length Difference between actual and calculated length of feet, in proportion to length of feet and size of body in the Rock-pigeon. of Feet. Wild rock-pigeon (mean measurement) 2:02 Too short Too long by by Carrier .. 2.60 2.60 2.40 2.25 2.80 2.80 2.85 2.75 Dragon Bagadotten Carrier Scanderoon, white Pigeon cygne Runt 0.31 0.25 0-21 0.06 0.56 0:37 0.29 0.27 . . Number of specimens 8. 8 In these two tables we see in the first column the actual length of the feet in thirty-six birds belonging to various breeds, and in the. two other columes we see by how much the feet are too short or too long, according to the size of bird, in comparison with the rock-pi- geon. In the first table twenty-two specimens have their feet too short, on an average by a little above the tenth of an inch (viz. 107); and five specimens have their feet on an average a very little too long, namely, by :07 of an inch. But some of these latter and ex- ceptional cases can be explained; for instance, with pouters the legs and feet are selected for length, and thus any natural tendency to a diminution in the length of the feet will have been counteracted. In the swallow and barb, when the calculation was made on any standard of comparison excepting the one above used (viz. length of body from base of beak to oil-gland), the feet were found to be too small. in the second table we have eight birds, with their beaks much longer than in the rock pigeon, both actually and proportionally with the size of body, and their feet are in an equally marked manner longer, namely, in proportion, on an average by .29 of an inch. I should here state that in Table I. there are a few partial exceptions to the beak being proportionally shorter than in the rock-pigeon: 214 CHAP. V. DOMESTIC PIGEONS. 38 thus the beak of the English frill-back is just perceptibly longer, and that of the Bussorah carrier of the same length or slightly longer, than in the rock-pigeon. The beaks of spots, swallows, and laugh- ers are only a very little shorter, or of the same proportional length, but slenderer. Nevertheless, these two tables, taken conjointly, in- dicate pretty plainly some kind of correlation between the length of the beak and the size of the feet. Breeders of cattle and horses believe that there is an analogous connection between the length of the limbs and head; they assert that a race-horse with the head of a dray-horse, or a greyhound with the head of a bulldog, would be a monstrous production. As fancy pigeons are generally kept in small aviaries, and are abundantly supplied with food, they must walk about much less than the wild rock-pigeon; and it.may be ad- mitted as highly probable that the reduction in the size of the feet in the twenty-two birds in the first table has been caused by disuse, and that this reduction has acted by correlation on the beaks of the great majority of the birds in Table I. When, on the other hand, the beak has been much elongated, by the continued selection of successive slight increments of length, the feet by correlation have likewise become much elongated in comparison with those of the wild rock-pigeon, notwithstanding their lessened use. As I had taken measures from the end of the middle toe to the heel of the tarsus in the rock-pigeon and in the above thirty-six birds, I have made calculations analogous with those above given, and the result is the same,-namely, that in the short-beaked breeds, with equally few exceptions as in the former case, the middle toe con- jointly with the tarsus has decreased in length; whereas in the long- beaked breeds it has increased in length, though not quite so uni- formly as in the former case, for the leg in some varieties of the runt varies much in length. As fancy pigeons are generally confined in aviaries of moderate size, and as even when not confined they do not search for their own food, they must during many generations have used their wings in- comparably less than the wild rock-pigeon. Hence it seemed to me probable that all the parts of the skeleton subservient to flight would be found to be reduced in size. With respect to the sternum, I have carefully measured its extreme length in twelve birds of dif- ferent breeds, and in two wild rock-pigeons from the Shetland Is- lands. For the proportional comparison I have tried with all twelve birds three standards of measurement, namely the length from the 38 In an analogous, but converse man- ner, certain natural groups of the Colum- bidæ, from being more terrestrial in their habits than other allied groups, have larger ſeet. See Prince Bonaparte's 'Coup. d'oeil sur l'Ordre des Pigeons.' CHAP. V. 215 ON THE EFFECTS OF DISUSE. . base of the beak to the oil-gland, to the end of the tail, and from the extreme tip to tip of wings. The result has been in each case nearly the same, the sternum being invariably found to be shorter than the wild rock-pigeon. I will give only a single table, as calculated by the standard from the base of the beak to the oil-gland; for the re- sult in this case is nearly the mean between the result obtained by the two other standards. Length of Sternum. Name of Breed. Actual Too Length. Short by Inches. Name of Breed. Actual Too Length. Short by Inches. Wild Rock-pigeon Pied Scanderoon Bagadotten Carrier Dragon Carrier Short-faced Tumbler 2.55 2.80 2.80 2.45 2.75 2:05 0.60 0:17 0.41 0.35 0.28 Barb.. Nun German Pouter Jacobin English Frill-back Swallow 2.35 2.27 2.36 2.33 2.40 2.45 0.34 0.15 0.51 0.22 0.43 0.17 This table shows that in these twelve breeds the sternum is on an average one-third of an inch (exactly 332) shorter than in the rock- pigeon, proportionally with the size of their bodies ; so that the sternum has been reduced by between one-seventh and one-eighth of its entire length; and this is a considerable reduction. I have also measured in twenty-one birds, including the above dozen, the prominence of the crest of the sternum relatively to its length, independently of the size of the body. In two of the twenty-one birds the crest was prominent in the same relative de- gree as in the rock pigeon ; in seven it was more prominent; but in five out of these seven, namely, in a fantail, two scanderoons, and two English carriers, this greater prominence may to a certain extent be explained, as a prominent breast is admired and selected by fanciers; in the remaining twelve birds the prominence was less. Hence it follows that the crest exhibits a slight, though uncertain, tendency to become reduced in prominence in a greater degree than does the length of the sternum relatively to the size of body in comparison with the rock-pigeon. I have measured the length of the scapula in nine different large and small-sized breeds, and in all the scapula is proportionally shorter taking the same standard as before) than in the wild rock- pigeon. The reduction in length on an average is very nearly one- fifth of an inch, or about one-ninth of the length of the scapula in the rock-pigeon. The arms of the furcula in all the specimens which I compared, diverged less, proportionally with the size of body, than in the 216 CHAP. V. DOMESTIC PIGEONS. rock-pigeon ; and the whole furcula was proportionally shorter. Thus in a runt, which measured from tip to tip of wings 384 inches, the furcula was only a very little longer (with the arms hardly more divergent) than in a rock-pigeon which measured from tip to tip 26 inches. In a barb, which in all its measurements was a little larger than the same rock-pigeon, the furcula was a quarter of an inch shorter. In a pouter, the furcula had not been lengthened propor- tionally with the increased length of the body. In a short-faced tumbler, which measured from tip to tip of wings 24 inches, there- fore only 24 inches less than the rock-pigeon, the furcula was barely two thirds of the length of that of the rock-pigeon. We thus clearly see that the sternum, scapulæ, and furcula are all reduced in proportional length; but when we turn to the wings we find what at first appears a wholly different and unexpected result. I may here re- mark that I have not picked out specimens, but have used every measurement made by me. Taking the length from the base of beak to the end of the tail as the standard of comparison, I find that, out of thirty-five birds of various breeds, twenty-five have wings of greater, and ten have them of less proportional length, than in the rock-pigeon. But from the frequently corre- lated length of the tail and wing-feathers, it is better to take as the standard of comparison the length from the base of the beak to the oil-gland; and by this standard, out of twenty-six of the same birds which had been thus measured, twenty-one had wings too long, and only five had them too short. In the twenty-one birds the wings ex- ceeded in length those of the rock-pigeon, on an average, by 13 inch ; whilst in the five birds they were less in length by only •8 of an inch. As I was much surprised that the wings of closely confined birds should thus so frequently have been increased in length, it occurred to me that it might be solely due to the greater length of the wing-feathers; for this certainly is the case with the jacobin, which has wings of unusual length. As in al- most every case I had measured the folded wings, I sub- tracted the length of this terminal part from that of the CHAP. V. 217 ON THE EFFECTS OF DISUSE. expanded wings, and thus I obtained, with a moderate degree of accuracy, the length of the wings from the ends of the two radii, answering from wrist to wrist in our arms. The wings, thus measured in the same twenty- five birds, now gave a widely different result; for they were proportionally with those of the rock-pigeon too short in seventeen birds, and in only eight too long. Of these eight birds, five were long-beaked, and this fact perhaps indicates that there is some correlation between the length of the beak and the length of the bones of the wings, in the same manner as with the feet and tarsi. The shortening of the humerus and radius in the seven- teen birds may probably be attributed to disuse, as in the case of the scapulæ and furcula to which the wing-bones are attached ;-the lengthening of the wing-feathers, and consequently the expansion of the wings from tip to tip, being, on the other hand, as completely independent of use and disuse as is the growth of the hair or wool on our long-haired dogs or long-woolled sheep. To sum up: we may confidently admit that the length of the sternum, and frequently the prominence of its crest, the length of the scapulæ and furcula, have all been reduced in size in comparison with the same parts in the rock-pigeon. And I presume that this may be safely at- tributed to disuse or lessened exercise. The wings, as measured from the ends of the radii, have likewise been generally reduced in length; but, owing to the increased growth of the wing-feathers, the wings, from tip to tip, are commonly longer than in the rock-pigeon. The feet, as well as the tarsi conjointly with the middle toe, have likewise in most cases become reduced ; and this it is probable has been caused by their lessened use; but 39 It perhaps deserves notice that be- sides these five birds two of the eight were barbs, which, as I have shown, must be classed in the same group with the long-beaked carriers and runts. Barbs may properly be called short- beaked carriers. It would, therefore, appear as if, during the reduction of their beaks, their wings had retained a little of that excess of length which is characteristic of their nearest relations and progenitors. 10 218 CHAP. V. DOMESTIC PIGEONS. the existence of some sort of correlation between the feet and beak is shown more plainly than the effects of disuse. We have also some faint indication of a similar correlation between the main bones of the wing and the beak. Summary on the Points of Difference between the several Domestic Races, and between the individual Birds.—The beak, together with the bones of the face, differ remarkably in length, breadth, shape, and curva- ture. The skull differs in shape, and greatly in the angle formed by the union of the premaxillary, nasal, and maxillo-jugal bones. The curvature of the lower jaw and the reflexion of its upper margin, as well as the gape of the mouth, differ in a highly remarkable manner. The tongue varies much in length, both independently and in correlation with the length of the beak. The development of the naked, wattled skin over the nostrils and round the eyes varies in an extreme degree. The eyelids and the external orifices of the nostrils vary in length, and are to a certain extent correlated with the degree of development of the wattle. The size and form of the esophagus and crop, and their capacity for in- flation, differ immensely. The length of the neck varies. With the varying shape of the body, the breadth and number of the ribs, the presence of processes, the number of the sacral vertebra, and the length of the sternum, all vary. The number and size of the coccygeal verte- bræ vary, apparently in correlation with the increased size of the tail. The size and shape of the perforations in the sternum, and the size and divergence of the arms of the furcula, differ. The oil-gland varies in develop- ment, and is sometimes quite aborted. The direction and length of certain feathers have been much modified, as in the hood of the Jacobin and the frill of the Turbit. The wing and tail feathers generally vary in length to- gether, but sometimes independently of each other and of the size of the body. The number and position of the CHAP, V. 219 SUMMARY OF DIFFERENCES. tail-feathers vary to an unparalleled degree. The primary and secondary wing-feathers occasionally vary in num. ber, apparently in correlation with the length of the wing. The length of the leg and the size of the feet, and, in connection with the latter, the number of the scutellæ, all vary. A web of skin sometimes connects the bases of the two inner toes, and almost invariably the two outer toes when the feet are feathered. The size of the body differs greatly: a runt has been known to weigh more than five times as much as a short- faced tumbler. The eggs differ in size and shape. Ac- cording to Parmentier, some races use much straw in building their nests, and others use little; but I cannot hear of any recent corroboration of this statement. The length of time required for hatching the eggs is uniform in all the breeds. The period at which the characteristic plumage of some breeds is acquired, and at which cer- tain changes of colour supervene, differs. The degree to which the young birds are clothed with down when first hatched is different, and is correlated in a singular manner with the future colour of the plumage. The manner of flight, and certain inherited movements, such as clapping the wings, tumbling either in the air or on the ground, and the manner of courting the female, pre- sent the most singular differences. In disposition the several races differ. Some races are very silent; others coo in a highly peculiar manner. Although many different races have kept true in cha- racter during several centuries, as we shall hereafter more fully see, yet there is far more individual variability in the truest breeds than in birds in a state of nature. There is hardly any exception to the rule that those cha- racters vary most which are now most valued and at- tended to by fanciers, and which consequently are now being improved by continued selection. This is indi- 40 Temminck, 'Hist. Nat. Gén. des Pigeons et des Gallinacés,' tom. 1., 1813, p. 170. 220 CHAP. V. DOMESTIC PIGEONS, rectly admitted by fanciers when they complain that it is much more difficult to breed high fancy pigeons up to the proper standard of excellence than the so-called toy pigeons, which differ from each other merely in colour; for particular colours when once acquired are not liable to continued improvement or augmentation. Some characters become attached, from quite unknown causes, more strongly to the male than to the female sex; so that we have, in certain races, a tendency to- wards the appearance of secondary sexual characters." of which the aboriginal rock-pigeon displays not a trace. 41 This term was used by John Hunter for such differences in structure between the males and females, as are not di- rectly connected with the act of repro- duction, as the tail of the peacock, the horns of deer, &c. CHAP, VI, 221 THEIR PARENTAGE. CHAPTER VI. 9 PIGEONS-continued. ON THE ABORIGINAL PARENT-STOCK OF THE SEVERAL DOMESTIC RACES HABITS OF LIFE WILD RACES OF THE ROCK-PIGEON DOVECOT-PIGEONS - PROOFS OF THE DESCENT OF THE SEV- ERAL RACES FROM COLUMBA LIVIA - FERTILITY OF THE RACES WHEN CROSSED - REVERSION TO THE PLUMAGE OF THE WILD ROCK-PIGEON CIRCUMSTANCES FAVOURABLE TO THE FORMATION OF THE RACES — ANTIQUITY AND HISTORY OF THE PRINCIPAL RACES — MANNER OF THEIR FORMATION --SELEC- TION - UNCONSCIOUS SELECTION -CARE TAKEN BY FANCIERS IN SELECTING THEIR BIRDS - SLIGHTLY DIFFERENT STRAINS GRADUALLY CHANGE INTO WELL-MARKED BREEDS - EXTINCTION OF INTERMEDIATE FORMS — CERTAIN BREEDS REMAIN PERMA- NENT, WHILST OTHERS CHANGE — SUMMARY. The differences described in the last chapter between the eleven chief domestic races and between individual birds of the same race, would be of little significance, if they had not all descended from a single wild stock. The question of their origin is therefore of fundamental importance, and must be discussed at considerable length. No one will think this superfluous who considers the great amount of difference between the races, who knows how ancient many of them are, and how truly they breed at the present day. Fanciers almost unanimously believe that the different races are descended from sev- eral wild stocks, whereas most naturalists believe that all are descended from the Columba livia or rock pigeon. Temminck has well observed, and Mr. Gould has 1 Temminck, Hist. Nat. Gén, des Pigeons,' &c., tom. i. p. 191. 222 CHAP. VI. DOMESTIC PIGEONS. made the same remark to me, that the aboriginal parent must have been a species which roosted and built its nest on rocks; and I may add that it must have been a social bird. For all the domestic races are highly social, and none are known to build or habitually to roost on trees. The awkward manner in which some pigeons, kept by me in a summer-house near an old walnut-tree, occasion- ally alighted on the barer branches, was evident. Nev- ertheless, Mr. R. Scot Skirving informs me that he often saw crowds of pigeons in Upper Egypt settling on the low trees, but not on the palms, in preference to the mud hovels of the natives. In India Mr. Blyth® has been assured that the wild C. livia, var. intermedia, some- times roosts in trees. I may here give a curious instance of compulsion leading to changed habits: the banks of the Nile above lat. 28° 30' are perpendicular for a long distance, so that when the river is full the pigeons cannot alight on the shore to drink, and Mr. Skirying repeat- edly saw whole flocks settle on the water, and drink whilst they floated down the stream. These flocks seen from a distance resembled flocks of gulls on the surface of the sea. If any domestic race had descended from a species which was not social, or which built its nest or roosted in trees," the sharp eyes of fanciers would assuredly have de- tected some vestige of so different an aboriginal habit. For we have reason to believe that aboriginal habits are long retained under domestication. Thus with the com- 2 I have heard through Sir C. Lyell from Miss Buckley, that some half-bred carriers kept during many years near London regularly settled by day on some adjoining trees, and, after being dis- turbed in their loft by their young being taken, roosted on them at night. 3. Annals and Mag. of Nat. Hist.,' 2nd ser., vol. xx., 1857, p. 509; and in a late volume of the Journal of the Asiatic Society. 4 In works written on the pigeon by fanciers I have sometimes observed the mistaken belief expressed that the spe- cies which naturalists call ground-pi- geons (in contradistinction to arboreal pigeons) do not perch and build on trees. In these same works wild spe- cies resembling the chief domestic races are often said to exist in various parts of the world, but such species are quite unknown to naturalists. CHAP, VI. 223 THEIR PARENTAGE. mon ass we see signs of its original desert life in its strong dislike to cross the smallest stream of water, and in its pleasure in rolling in the dust. The same strong dislike to cross a stream is common to the camel, which has been domesticated from a very ancient period. Young pigs, though so tame, sometimes squat when frightened, and thus try to conceal themselves even on an open and bare place. Young turkeys, and occasionally even young fowls, when the hen gives the danger-cry, run away and try to hide themselves, like young partridges or pheasants, in order that their mother may take flight, of which she has lost the power. The musk-duck (Den- drocygna viduata) in its native country often perches and roosts on trees,' and our domesticated musk-ducks, though such sluggish birds, “are fond of perching on the tops of barns, walls, &c., and, if allowed to spend the night in the hen-house, the female will generally go to roost by the side of the hens, but the drake is too heavy to mount thither with ease. We know that the dog, however well and regularly fed, often buries, like the fox, any su- perflous food; and we see him turning round and round on a carpet, as if to trample down grass to form a bed; we see him on bare pavements scratching backwards as if to throw earth over his excrement, although, as I be- lieve, this is never effected even where there is earth. In the delight with which lambs and kids crowd together and frisk on the smallest hillock, we see a vestige of their former alpine habits. We have therefore good reason to believe that all the domestic races of the pigeon are descended either from some one or from several species which both roosted and built their rests on rocks, and were social in disposition. As only five or six wild species with these habits and making any near approach in structure to the domes- 96 6 Sir R. Schomburgk, in Journal R. Geograph. Soc.,' vol. xiii. 1944, p. 32. 6 Rev. E. S. Dixon, 'Ornamental Poul- try,' 1848, pp. 63, 66. 224 CHAP. VI. DOMESTIC PIGEONS. ticated pigeon are known to exist, I will enumerate them. Firstly, the Columba leuconota resembles certain domestic varie- ties in its plumage, with the one marked and never-failing difference of a white band which crosses the tail at some distance from the ex- tremity. This species, moreover, inhabits the Himalaya, close to the limit of perpetual snow; and therefore, as Mr. Blyth has re- marked, is not likely to have been the parent of our domestic breeds, which thrive in the hottest countries. Secondly, the C. rupestris, of Central Asia, which is intermediate between the C. leuconota and livia ; but has nearly the same coloured tail with the former species. Thirdly, the Columba littoralis builds and roosts, according to Tem- minck, on rocks in the Malayan archipelago; it is white, excepting parts of the wing and the tip of the tail, which are black ; its legs are livid-coloured, and this is a character not observed in any adult domestic pigeon ; but I need not have mentioned this species or the closely-allied C. luctuosa, as they in fact belong to the genus Carpo- phaga. Fourthly, Columba Guinea, which ranges from Guinea 8 to the Cape of Good Hope, and roosts either on trees or rocks, according to the nature of the country. This species belongs to the genus Strictonas of Reichenbach, but is closely allied to true Columba ; it is to some extent coloured like certain domestic races, and has been said to be domesticated in Abyssinia ; but Mr. Mansfield Parkyns, who collected the birds of that country and knows the species, informs me that this is a mistake. Moreover the C. Guinea is characterized by the feathers of the neck having peculiar notched tips,-a charac- ter not observed in any domestic race. Fifthly, the Columba anas of Europe, which roosts on trees, and builds its nest in holes, either in trees or the ground; this species, as far as external characters go, might be the parent of several domestic races; but, though it crosses readily with the true rock-pigeon, the offspring, as we shall pre- sently see, are sterile hybrids, and of such sterility there is not a trace when the domestic races are intercrossed. It should also be observed that if we were to admit, against all probability, that any of the foregoing five or six species were the parents of some of our domestic pigeons, not the least light would be thrown on the chief differences between the eleven most strongly-marked races. We now come to the best known rock-pigeon, the Columba livia, 7 Proc. Zoolog. Soc., 1859, p. 400. 8 Temminck, Hist. Nat. Gén, des Pigeons,' tom. i.; also "Les Pigeons,' par Mad. Knip and Temminck. Bona- parte however, in his 'Coup-d'ail,' be- lieves that two closely allied species are confounded together under this name. The C. leucocephal of the West Indies is stated by Temminck to be a rock- pigeon; but I am informed by Mr. Gosse that this is an error. CHAP. VI. 225 THEIR PARENTAGE. which is often designated in Europe pre-eminently as the Rock-pi- geon, and which naturalists believe to be the parent of all the do- mesticated breeds. This bird agrees in every essential character with the breeds which have been only slightly modified. It differs from all other species in being of a slaty-blue colour, with two black bars on the wings, and with the croup (or loins) white. Occasion- ally birds are seen in Faroe and the Hebrides with the black bars replaced by two or three black spots; this form has been named by Brehm ° C. amalice, but this species has not been admitted as distinct by other ornithologists. Graba 10 even found a difference between the wing-bars of the same bird in Faroe. Another and rather mor distinct form is either truly wild or has become feral on the cliffs of England, and was doubtfully named by Mr. Blyth" as C. affinis, but is now no longer considered by him as a distinct species. C. af- finis is rather smaller than the rock-pigeon of the Scottish islands, and has a very different appearance owing to the wing-coverts being chequered with black, with similar marks often extending over the back. The chequering consists of a large black spot on the two sides, but chiefly on the outer side, of each feather. The wing. bars in the true rock-pigeon and in the chequered variety are, in fact, due to similar though larger spots symmetrically crossing the secondary wing-feather and the larger coverts. Hence the chequering arises merely from an extension of these marks to other parts of the plumage. Chequered birds are not confined to the coasts of Eng- land; for they were found by Graba at Faroe; and W. Thompson says that at Islay fully half the wild rock-pigeons were chequered. Colonel King, of Hythe, stocked his dovecot with young wild birds which he himself procured from nests at the Orkney Islands; and several specimens, kindly sent to me by him, were all plainly chequered. As we thus see that chequered birds occur mingled with the true rock-pigeon at three distinct sites, namely, Faroe, the Ork- ney Islands, and Islay, no importance can be attached to this natu- ral variation in the plumage. Prince C. L. Bonaparte, 13 a great divider of species, enumerates, with a mark of interrogation, as distinct from C. livia, the C. turri- cola of Italy, the C. rupestris of Daouria, and the C. Schimperi of Abyssinia ; but these birds differ from C. livia in characters of the 12 Handbuch der Naturgesch. Vogel Deutschlands.' 10 Tagebuch Reise nach Färo,' 1830, 8. 62. ing. 12 Natural History of Ireland,' Birds, vol.ii. (1850), p. 11. For Graba, see pre- vious reference. 13 Coup-d'oeil sur l'Ordre des Pi- ons,' Comptes Rendus, 1854-55. 11 Annals and Mag. of Nat. Hist.,' vol. xix., 1847, p. 102. This excellent paper on pigeons is well worth consult 226 CHAP, VÍ. DOMESTIC PIGEONS. most trifling value. In the British Museum there is a chequered pigeon, probably the C. Schimperi of Bonaparte, from Abyssinia. To these may be added the C.gymnocyclus of G. R. Gray from W. Africa, which is slightly more distinct, and has rather more naked skin round the eyes than the rock pigeon ; but from information given me by Dr. Daniell, it is doubtful whether this is a wild bird, for dovecot pigeons (which I have examined) are kept on the coast of Guinea. The wild rock-pigeon of India (C. intermedia of Strickland) has been more generally accepted as a distinct species. It chiefly dif- fers in the croup being blue instead of snow-white; but as Mr. Blyth informs me, the tint varies, being sometimes albescent. When this form is domesticated chequered birds appear, just as occurs in Europe with the truly wild C. livia. Moreover we shall immediate- ly have proof that the blue and white croup is a highly variable character; and Bechstein 14 asserts that with dovecot-pigeons in Germany this is the most variable of all the characters of the plu- mage. Hence it may be concluded that C. intermedia cannot be ranked as specifically distinct from C. livia. In Madeira there is a rock-pigeon which a few ornithologists have suspected to be distinct from C.livia. I have examined numer- ous specimens collected by Mr. E. V. Harcourt and Mr. Mason. They are rather smaller than the rock-pigeon from the Shetland Islands, and their beaks are plainly thinner, but the thickness of the beak varied in the several specimens. In plumage there is remarkable diversity ; some specimens are identical in every feather (I speak after actual comparison) with the rock-pigeon of the Shet- land Islands; others are chequered, like C. affinis from the cliffs of England, but generally to a greater degree, being almost black over the whole back; others are identical with the so-called C. intermedia of India in the degree of blueness of the croup; whilst others have this part very pale or very dark blue, and are likewise chequered. So much variability raises a strong suspicion that these birds are domestic pigeons which have become feral. From these facts it can hardly be doubted that C. Tiria, affinis, in- termedia, and the forms marked with an interrogation by Bonaparte, ought all to be included under a single species. But it is quite im- material whether or not they are thus ranked, and whether some one of these forms or all are the progenitors of the various domestic kinds, as far as any light is thus thrown on the differences between the more strongly-marked races. That common dovecot-pigeons, 14 Naturgesch, Deutschlands,' Band iv., 1795, s. 14. CHAP. VI. 227 THEIR PARENTAGE. which are kept in various parts of the world, are descended from one or from several of the above-mentioned wild varieties of C. livia, no one who compares them will doubt. But before making a few remarks on dovecot-pigeons, it should be stated that the wild rock- pigeon has been found easy to tame in several countries. We have seen that Colonel King at Hythe stocked his dovecot more than twenty years ago with young wild birds taken at the Orkney Is- lands, and since this time they have greatly multiplied. The accu- rate Macgillivray 15 asserts that he completely tamed a wild rock- pigeon in the Hebrides; and several accounts are on record of these pigeons having bred in dovecots in the Shetland Islands. In India, as Captain Hutton informs me, the wild rock-pigeon is easily tamed, and breeds readily with the domestic kind; and Mr. Blyth 16 asserts that wild birds come frequently to the dovecots and mingle freely with their inhabitants. In the ancient 'Ayeen Akbery' it is writ- ten that, if a few wild pigeons be taken, "they are speedily joined by a thousand others of their kind.” Dovecot-pigeons are those which are kept in dovecots in a semi- domesticated state; for no special care is taken of them, and they procure their own food, except during the severest weather. In England, and, judging from MM. Boitard and Corbie's work, in France, the common dovecot-pigeon exactly resembles the chequered variety of C. livia, but I have seen dovecots brought from York- shire, without any trace of chequering, like the wild rock-pigeon of the Shetland Islands. The chequered dovecots from the Orkney Islands, after having been domesticated by Colonel King for more than twenty years, differed slightly from each other in the darkness (f their plumage, and in the thickness of their beaks; the thinnest beak being rather thicker than the thickest one in the Madeira birds. In Germany, according to Bechstein, the common dovecot- pigeon is not chequered. In India they often become chequered, and sometimes pied with white; the croup also, as I am informed by Mr. Blyth, 'becomes nearly white. I have received from Sir J. Brooke some dovecot-pigeons, which originally came from the S. Natunas Islands in the Malay archipelago, and which had been 15 History of British Birds,' vol. i. pp. 275-284. Mr. Andrew Duncan tamed a rock-pigeon in the Shetland Islands. Mr. James Barclay, and Mr. Smith of Uyea Sound, both say that the wild rock-pi. geon can be easily tamed; and the for- mer gentleman asserts that the tame birds breed four times a year. Dr. Law- rence Edmondstone informs me that a wild rock-pigeon came and settled in his dovecot in Balta Sound in the Shetland Islands, and bred with his pigeons; he has also given me other instances of the wild rock-pigeon having been taken young and breeding in captivity. 16. Annals and Mag. of Nat. History, vol. xix., 1847, p. 103, and vol. for 1857, p. 512. 228 CHAP, VI. DOMESTIC PIGEONS. crossed with the Singapore dovecots; they were small, and the dark- est variety was extremely like the dark chequered variety with a blue croup from Madeira; but the beak was not so thin, though decidedly thinner than in the rock-pigeon from the Shetland Islands. A dovecot-pigeon sent to me by Mr. Swinhoe from Foochow, in China, was likewise rather small, but differed in no other respect. I have also received, through the kindness of Dr. Daniell, four liv. ing dovecot-pigeons from Sierra Leone ; 17 these were fully as large as the Shetland rock-pigeon, with even bulkier bodies. In plumage some of them were identical with the Shetland rock-pigeon, but with the metallic tints apparently rather more brilliant; others had a blue croup and resembled the chequered variety of C. intermedia of India, and some were so much chequered as to be nearly black. In these four birds the beak differed slightly in length, but in all it was decidedly shorter, more massive, and stronger than in the wild rock-pigeon from the Shetland Islands, or in the English dovecot. When the beaks of these African pigeons were compared with the thinnest beaks of the wild Madeira specimens, the contrast was great; the former being fully one-third thicker in a vertical direc- tion than the latter; so that any one at first would have felt inclined to rank these birds as specifically distinct; yet so perfectly gradua- ted a series could be formed between the above-mentioned varieties, that it was obviously impossible to separate them. To sum up: the wild Columba livia, including under this name C. affinis, intermedia, and the other still more closely-affined geographical races, has a vast range from the southern coast of Norway and the Faroe Islands to the shores of the Mediterranean, to Madeira and the Ca- nary Islands, to Abyssinia, India, and Japan. It varies greatly in plumage, being in many places chequered with black, and having either a white or blue croup or loins; it varies also slightly in the size of the beak and body. Dovecot-pigeons, which no one disputes are descended from one or more of the above wild forms, present a sim- ilar but greater range of variation in plumage, in the size of body, and in the length and thickness of the beak. 17 Domestic pigeons of the common kind are mentioned as being pretty nu- merous in John Barbut's Description of the Coast of Guinea,' (9.215), publish- ed in 1746; they are said, in accordance with the name which they bear, to have been imported. CHAP. VI. 229 THEIR PARENTAGE. There seems to be some relation between the croup being blue or white, and the temperature of the country inhab- ited by both wild and dovecot-pigeons; for nearly all the dovecot-pigeons in the northern parts of Europe have a white croup, like that of the wild European rock-pigeon ; and nearly all the dovecot-pigeons of India have a blue croup like that of the wild C. intermedia of India. As in various countries the wild rock-pigeon has been found easy to tame, it seems extremely probable that the dove- cot-pigeons throughout the world are the descendants of at least two and perhaps more wild stocks, but these, as we have just seen, cannot be ranked as specifically distinct. With respect to the variation of C. livia, we may without fear of contradiction go one step further. Those pigeon-fanciers who believe that all the chief races, such as Carriers, Pouters, Fantails, &c., are descended from distinct aboriginal stocks, yet admit that the so-called toy-pigeons, which differ from the rock-pigeon in little except in colour, are descended from this bird. By toy- pigeons are meant such birds as Spots, Nuns, Helmets, Swallows, Priests, Monks, Porcelains, Swabians, Arch- angels, Breasts, Shields, and others in Europe, and many others in India. It would indeed be as puerile to sup- pose that all these birds are descended frorn so many distinct wild stocks as to suppose this to be the case with the many varieties of the gooseberry, heartsease, or dahlia. Yet these pigeons all breed true, and many of them present sub-varieties which likewise truly trans- mit their character. They differ greatly from each other and from the rock-pigeon in plumage, slightly in size and proportions of body, in size of feet, and in the length and thickness of their beaks. They differ from each other in these respects more than do dovecot- pigeons. Although we may safely admit that the latter, which vary slightly, and that the toy-pigeons, which vary in a greater degree in accordance with their more highly- domesticated condition, are descended from C. livia, in- 230 CHAP, VÌ. DOMESTIC PIGEONS. cluding under this name the above-enumerated wild geo- graphical races; yet the question becomes far more difficult when we consider the eleven principal races, most of which have been so profoundly modified. It can, however, be shown, by indirect evidence of a perfectly conclusive nature, that these principal races are not de- scended from so many wild stocks; and if this be once admitted, few will dispute that they are the descendants of C. livia, which agrees with them so closely in habits and in most characters, which varies in a state of nature, and which has certainly undergone a considerable amount of variation, as in the toy-pigeons. We shall moreover presently see how eminently favourable circumstances have been for a great amount of modification in the more carefully tended breeds. The reasons for concluding that the several principal races have not descended from so many aboriginal and unknown stocks may be grouped under the following six heads : -Firstly, if the eleven chief races have not arisen from the variation of some one species, together with its geographical races, they must be descended from several extremely distinct aboriginal species; for no amount of crossing between only six or seven wild forms could pro- duce races so distinct as pouters, carriers, runts, fantails, turbits, short-faced tumblers, jacobines, and trumpeters. How could crossing produce, for instance, a pouter or a fantail, unless the two supposed aboriginal parents pos- sessed the remarkable characters of these breeds? I am aware that some naturalists, following Pallas, believe that crossing gives a strong tendency to variation, inde- pendently of the characters inherited from either parent. They believe that it would be easier to raise a pouter or fantail pigeon from crossing two distinct species, neither of which possessed the characters of these races, than from any single species. I can find few facts in support of this doctrine, and believe in it only to a limited degree; but in a future chapter I shall have to recur to this sub- CHAP. VI. 231 THEIR PARENTAGE. ject. For our present purpose the point is not material. The question which concerns us is, whether or not many new and important characters have arisen since man first domesticated the pigeon. On the ordinary view, varia- bility is due to changed conditions of life; on the Palla- sian doctrine, variability, or the appearance of new cha- racters, is due to some mysterious effect from the crossing of two species, neither of which possess the characters in question. In some few instances it is credible, though for several reasons not probable, that well-marked races have been formed by crossing; for instance, a barb might perhaps have been formed by a cross between a long-beak- ed carrier, having large eye-wattles, and some short-beak- ed pigeon. That many races have been in some degree modified by crossing, and that certain varieties which are distinguished only by peculiar tints have arisen from crosses between differently-coloured varieties, may be ad- mitted as almost certain. On the doctrine, therefore, that the chief races owe their differences to their descent from distinct species, we must admit that at least eight or nine, or more probably a dozen species, all having the same habit of breeding and roosting on rocks and living in society, either now exist somewhere, or formerly exist- ed but have become extinct as wild birds. Considering how carefully wild pigeons have been collected through- out the world, and what conspicuous birds they are, es- pecially when frequenting rocks, it is extremely impro- bable that eight or nine species, which were long ago domesticated and therefore must have inhabited some anciently known country, should still exist in the wild state and be unknown to ornithologists. The hypothesis that such species formerly existed, but have become extinct, is in some slight degree more pro- bable. But the extinction of so many species within the historical period is a bold hypothesis, seeing how little influence man has had in exterminating the common rock-pigeon, which agrees in all its habits of life with the 232 CHAP. VÌ. DOMESTIC PIGEONS. domestic races. The C. livia now exists and flourishes on the small northern islands of Faroe, on many islands off the coast of Scotland, on Sardinia and the shores of the Mediterranean, and in the centre of India. Fanciers have sometimes imagined that the several supposed pa- rent-species were originally confined to small islands, and thus might readily have been exterminated; but the facts just given do not favour the probability of their extinction, even on small islands. Nor is it probable, from what is known of the distribution of birds, that the islands near Europe should have been inhabited by peculiar species of pigeons; and if we assume that distant oceanic islands were the homes of the supposed parent-species, we must remember that ancient voyages were tediously slow, and that ships were then ill-pro- vided with fresh food, so that it would not have been easy to bring home living birds. I have said ancient voyages, for nearly all the races of the pigeon were known before the year 1600, so that the supposed wild species must have been captured and domesticated before that date. Secondly.-The doctrine that the chief domestic races have descended from several aboriginal species, implies that several species were formerly so thoroughly domes- ticated as to breed readily when confined. Although it is easy to tame most wild birds, experience shows us that it is difficult to get them to breed freely under con- finement; although it must be owned that this is less difficult with pigeons than with most other birds. Dur- ing the last two or three hundred years, many birds have been kept in aviaries, but hardly one has been added to our list of thoroughly reclaimed species; yet on the above doctrine we must admit that in ancient times nearly a dozen kinds of pigeons, now unknown in the wild state, were thoroughly domesticated. Thirdly.-Most of our domesticated animals have run wild in various parts of the world; but birds, owing CHAP. VI. 233 THEIR PARENTAGE. apparently to their partial loss of the power of flight, less often than quadrupeds. Nevertheless I have met with accounts showing that the common fowl has become feral in South America and perhaps in West Africa, and on several islands: the turkey was at one time almost feral on the banks of the Parana ; and the Guinea-fowl has become perfectly wild at Ascension and in Jamaica. In this latter island the peacock, also, “has become a maroon bird." The common duck wanders from its home and becomes almost wild in Norfolk. Hybrids between the common and musk-duck which have become wild have been shot in North America, Belgium, and near the Caspian Sea. The goose is said to have run wild in La Plata. The common dovecot-pigeon has be- come wild at Juan Fernandez, Norfolk Island, Ascension, probably at Madeira, on the shores of Scotland, and, as is asserted, on the banks of the Hudson in North Ame- rica.18 But how different is the case, when we turn to the eleven chief domestic races of the pigeon, which are supposed by some authors to be descended from so many distinct species ! no one has ever pretended that any one of these races has been found wild in any quarter of the world; yet they have been transported to all countries, and some of them must have been carried back to their native homes. On the view that all the races are the 18 With respect to feral pigeons-for American Ornithology,' and Selys- Juan Fernandez, see Bertero in Annal. Longchamp's 'Hybrides dans la Famille des Sc. Nat.,' tom xxi. p. 351. For Nor- des Anatides. For the goose, Isidore folk Island, sce Rev. E. S. Dixon in the Geoffroy St. Hilaire, Hist. Nat. Gén.,' Dovecote,' 1851, p. 14, on the authority tom. iii. p. 498. For guinea-fowls, see of Mr. Gould, For Ascension I rely on Gosse's 'Naturalist's Sojourn in Jamai- MS. information given me by Mr. Layard. ca,' p. 124; and his 'Birds of Jamaica' For the banks of the Hudson, see Blyth for fuller particulars. I say the wild in 'Annals of Nat. Hist.,' vol. xx., 1857, Guinea-fowl in Ascension. For the pea- p. 511. For Scotland, see Macgillivray, cock, see 'A Week at Port Royal,' by a British Birds, vol. i. p. 275; also competent authority, Mr. R. Hill, p. 42. Thompson's Nat. History of Ireland, For the turkey I rely on oral informa- Birds,' vol. ii. p. 11. For ducks, see Rev. tion; I ascertained that they were not E. S. Dixon, Ornamental Poultry,' 1817, Curassows. With respect to fowls I For the feral hybrids of the will give the references in the next common and musk-ducks, see Audubon's chapter. p. 122. 234 CHAP, VỊ. DOMESTIC PIGEONS. . product of variation, we can understand why they have not become feral, for the great amount of modification which they have undergone shows how long and how thoroughly they have been domesticated; and this would unfit them for a wild life. Fourthly.—If it be assumed that the characteristic dif- ferences between the various domestic races are due to descent from several aboriginal species, we must con- clude that man chose for domestication in ancient times, either intentionally or by chance, a most abnormal set of pigeons; for that species resembling such birds as pouters, fantails, carriers, barbs, short-faced tumblers, turbits, &c., would be in the highest degree abnormal, as compared with all the existing members of the great pigeon-family, cannot be doubted. Thus we should have to believe that man not only formerly succeeded in thoroughly domesticating several highly abnormal spe- cies, but that these same species have since all become extinct, or are at least now unknown. This double acci- dent is so extremely improbable that the assumed exist- ence of so many abnormal species would require to be supported by the strongest evidence. On the other hand, if all the races are descended from C. livia, we can un- derstand, as will hereafter be more fully explained, how any slight deviation in structure which first appeared would continually be augmented by the preservation of the most strongly marked individuals; and as the power of selection would be applied according to man's fancy, and not for the bird's own good, the accumulated amount of deviation would certainly be of an abnormal nature in comparison with the structure of pigeons living in a state of nature. I have already alluded to the remarkable fact, that the characteristic differences between the chief domestic races are eminently variable: we see this plainly in the great difference in the number of the tail-feathers in the fantail, in the development of the crop in pouters, in the CHAP. VI, 235 THEIR PARENTAGE. length of the beak in tumblers, in the state of the wattle in carriers, &c. If these characters are the result of suc- cessive variations added together by selection, we can understand why they should be so variable: for these are the very parts which have varied since the domesti- cation of the pigeon, and therefore would be likely still to vary; these variations moreover have been recently, and are still being accumulated by man's selection; therefore they have not as yet become firmly fixed. Fifthly. All the domestic races pair readily together, and, what is equally important, their mongrel offspring are perfectly fertile. To ascertain this fact I made many experiments, which are given in the note below; and recently Mr. Tegetmeier has made similar experiments with the same result. 19 The accurate Neumeister serts that when dovecots are crossed with pigeons of any 20 as- 19 I have drawn out a long table of the various crosses made by fanciers between the several domestic breeds, but I do not think it worth pub- lishing. I have myself made for this special purpose many crosses, and all were perfectly fertile. I have united in one bird five of the most distinct races, and with patience I might un- doubtedly have thus united all. The case of five distinct breeds being blended together with unimpaired fertility is important, because Gärtner has shown that it is a very general, though not, as he thought, universal rule, that com- plex crosses between several species are excessively sterile. I have met with only two or three cases of reported sterility in the offspring of certain races when crossed. Von Pistor (Das Ganze der Feld-taubenzucht,' 1831, S. 15) asserts that the mongrels from barbs and fantails are sterile: I have proved this to be erroneous, not only by cross- ing these hybrids with several other hybrids of the same parentage, but by the more severe test of pairing brother and sister hybrids inter se, and they were perfectly fertile. Temminck has stated (Hist. Nat. Gén. des Pigeons,' tom. i. p. 197) that the turbit or owl will not cross readily with other breeds: but my turbits crossed, when left free, with almond tumblers and with trumpeters; the same thing has occurred (Rev. E. S. Dixon, The Dovecot,' p. 107) between turbits and dovecots and nuns. I have crossed turbits with barbs, as has M. Boitard (p. 31), who says the hybrids were very fertile. Hybrids from a turbit and fantail have been known to breed inter se (Riedel, Taubenzucht, s. 25, and Bechstein, Naturgesch. Deutsch.' B. iv. s. 44). Turbits (Riedel, s. 26) have been crossed with pouters and with jacobins, and with a hybrid jacobin- trumpeter (Riedel, s. 27). The latter author has, however, made some vague statements (s. 22) on the sterility of turbits when crossed with certain other crossed breeds. But I have little doubt that the Rev. E. S. Dixon's explanation of such statements is correct, viz. that individual birds both with turbits and other breeds are occasionalls sterile. 20 Das Ganze der Taubenzucht,' s. 18. 236 CHAP. VI. DOMESTIC PIGEONS. other breed, the mongrels are extremely fertile and hardy. MM. Boitard and Corbié - affirm, after their great experience, that with crossed pigeons the more distinct the breeds, the more productive are their mongrel off- spring. I admit that the doctrine first broached by Pallas is highly probable, if not actually proved, namely, that closely allied species, which in a state of nature or when first captured would have been in some degree sterile when crossed, lose this sterility after a long course of domestication; yet when we consider the great differ- ence between such races as pouters, carriers, runts, fan- tails, turbits, tumblers, &c., the fact of their perfect, or even increased, fertility when intercrossed in the most complicated manner becomes a strong argument in favour of their having all descended from a single species. This argument is rendered much stronger when we hear (I append in a note 22 all the cases which I have collected) 21 "Les Pigeons,' &c., p. 35. 22 Domestic pigeons pair readily with the allied C. oenas (Bechstein, Natur- gesch. Deutschlands,' B. iv. s. 3); and Mr. Brent has made the same cross seve- ral times in England, but the young were very apt to die at about ten days old; one hybrid which he reared (from C. oenas and a male Antwerp carrier) pair- ed with a dragon, but never laid eggs. Bechstein further states (s. 26) that the domestic pigeon will cross with C. pa- lumbus, Turtur risoria, and T. vulga- ris, but nothing is said of the fertility of the hybrids, and this would have been mentioned had the fact been ascertained. In the Zoological Gardens (MS. report to me from Mr. James Hunt) a male hybrid from Turtur vulgaris and a domestic pigeon "paired with several different species of pigeons and doves, but none of the eggs were good." Hybrids from C. oenas and gymnophthalmos were sterile. In Loudon's Mag. of Nat. Hist.' vol. vii. 1834, p. 154, it is said that a male hybrid (from Turtur vulgaris male, and the cream-coloured T. risoria female) paired during two years with a fe- male T. risoria, and the latter laid many eggs, but all were sterile." MM. Boitard and Corbié ("Les Pigeons,' p. 235) state that the hybrids from these two turtle- doves are invariably sterile both inter se and with either pure parent. The ex- periment was tried by M. Corbié "avec une espèce d'obstination;" and likewise by M. Manduyt, and by M. Vieillot. Tem- minck also found the hybrids from these two species quite barren. Therefore, when Bechstein (Naturgesch. Vogel. Deutschlands,' B. 4, s. 101) asserts that the hybrids from these two turtle doves propagate inter se equally well with pure species, and when a writer in the 'Field' newspaper (in a letter dated Nov. 10th, 1858) makes a similar assertion, it would appear that there must be some mistake; though what the mistake is I know not, as Bechstein at least must have known the white variety of T. risoria: it would be an unparalleled fact if the same two species sometimes produced extremely fertile, and sometimes extremely barren, offspring. In the MS. report from the Zoological Gardens it is said that hybrids from Turtur vulgaris and suratensis, CHAP. VI. 237 THEIR PARENTAGE. that hardly a single well-ascertained instance is known of hybrids between two true species of pigeons being fer- tile, inter se, or even when crossed with one of their pure parents. Sixthly.--Excluding certain important characteristic differences, the chief races agree most closely both with each other and with C. livia in all other respects. As previously observed, all are eminently sociable; all dis- like to perch or roost, and refuse to build in trees; all lay two eggs, and this is not a universal rule with the Columbida; all, as far as I can hear, require the same time for hatching their eggs; all can endure the same great range of climate; all prefer the same food, and are passionately fond of salt; all exhibit (with the asserted exception of the finnikin and turner, which do not differ much in any other character) the same peculiar gestures when courting the females; and all (with the exception of trumpeters and laughers, which likewise do not differ much in any other character) coo in the same peculiar manner, unlike the voice of any other wild pigeon. All the co- loured breeds display the same peculiar metallic tints on the breast, a character far from general with pigeons. Each race presents nearly the same range of variation in colour; and in most of the races we have the same singu- lar correlation between the development of down in the young and the future colour of plumage. All have the proportional length of their toes, and of their primary wing-feathers, nearly the same, - characters which are apt to differ in the several members of the Columbidæ. and from T. vulgaris and Ectopistes mi- gratorius, were sterile. Two of the latter male hybrids paired with their pure pa- rents, viz. Turtur vulgaris and the Ectopistes, and likewise with T. risoria and with Columba oenas, and many eggs were produced, but all were barren. At Paris, hybrids have been raised (Isid. Geoffroy Saint Hilaire, Hist. Nat. Géné- rale,' tom. iii. p. 180) from Turtur auri- tus with T. cambayensis and with T. suratensis, but nothing is said of their fertility. At the Zoological Gardens of London the Goura coronata and victo- rice produced a hybrid, which paired with the pure G.coronata, and laid seve- ral eggs, but these proved barren. In 1860 Columba gymnophthalmos and maculosa produced hybrids in these same gardens. 238 CHAP. VI. DOMESTIC PIGEONS. In those races which present some remarkable deviation of structure, such as the tail of fantails, crop of pouters, beak of carriers and tumblers, &c., the other parts re- main nearly unaltered. Now every naturalist will admit that it would be scarcely possible to pick out a dozen natural species in any Family, which should agree closely in habits and in general structure, and yet should differ greatly in a few characters alone. This fact is explicable through the doctrine of natural selection; for each suc- cessive modification of structure in each natural species is preserved, solely because it is of service; and such modifications when largely accumulated imply a great change in the habits of life, and this will almost certainly lead to other changes of structure throughout the whole organisation. On the other hand, if the several races of the pigeon have been produced by man through selection and variation, we can readily understand how it is that they should still all resemble each other in habits and in those many characters which man has not cared to modi- fy, whilst they differ to so prodigious a degree in those parts which have struck his eye or pleased his fancy. Besides the points above enumerated, in which all the domestic races resemble C. livia and each other, there is one which deserves special notice. The wild rock-pigeon is of a slaty-blue colour; the wings are crossed by two black bars; the croup varies in colour, being generally white in the pigeon of Europe, and blue in that of India ; the tail has a black bar close to the end, and the outer webs of the outer tail-feathers are edged with white, ex- cept near the tips. These combined characters are not found in any wild pigeon besides C. livia. I have looked carefully through the great collection of pigeons in the British Museum, and I find that a dark bar at the end of the tail is common; that the white edging to the outer tail-feathers is not rare; but that the white croup is ex- tremely rare, and the two black bars on the wings occur in no other pigeon, excepting the alpine C. leuconota and CHAP. VI. 239 THEIR REVERSION IN COLOUR. C. rupestris of Asia. Now if we turn to the domestic races, it is highly remarkable, as an eminent fancier, Mr. Wicking, observed to me, that, whenever a blue bird ap- pears in any race, the wings almost invariably show the double black bars.23 The primary wing-feathers may be white or black, and the whole body may be of any colour, but if the wing-coverts alone are blue, the two black bars surely appear. I have myself seen, or acquired trust- worthy evidence, as given below, 24 of blue birds with black bars on the wing, with the croup either white or very pale or dark blue, with the tail having a terminal black bar, and with the outer feathers externally edged with white or very pale coloured, in the following races, sures 23 There is one exception to the rule, namely in a sub-variety of the swallow of German origin, which is figured by Neumeister, and was shown to me by Mr. Wicking. This bird is blue, but has not the black wing-bars; for our object, however, in tracing the descent of the chief races, this exception signi- fies the less as the swallow approaches closely in structure to c. livia. In many sub-varieties, the black bars are replaced by bars of various colours. The figures given by Neumeister are sufficient to show that, if the wings alone are blue, the black wing-bars appear. 24 I have observed blue birds with all the above mentioned marks in the fol- lowing races, which seemed to be per- fectly pure, and were shown at various exhibitions. Pouters, with the double black wing-bars, with white croup, dark bar to end of tail, and white edging to outer tail-feathers. Turbits, with all these same characters. Fantails, with the same; but the group in some was bluish or pure blue: Mr. Wicking bred blue fantails from two black birds. Carriers (including the Bagadotten of Neumei- ster), with all the marks: two birds which I examined had white, and two had blue croups; the white edging to the outer tail-feathers was not present in all. Mr. Corker, a great breeder, as- me that, if black carriers are matched for many successive genera- tions, the offspring become first ash- coloured, and then blue with black wing-bars. Runts of the elongated breed had the same marks, but the croup was pale blue; the outer tail- feathers had white edges. Neumeister figures the great Florence Runt of a blue colour with black bars. Jacobins are very rarely blue, but I have received authentic accounts of at least two in- stances of the blue variety with black bars having appeared in England: blue jacobins were bred by Mr. Brent from two black birds. I have seen common tumblers, both Indian and English, and short-faced tumblers, of a blue colour, with black wing-bars, with the black bar at the end of the tail, and with the outer tail-feathers edged with white; the croup in all was blue, or extremely pale blue, never absolutely white. Blue barbs and trumpeters seem to be ex- cessively rare; but Neumeister, who may be implicitly trusted, figures blue varieties of both, with black wing-bars. Mr. Brent informs me that he has seen a blue barb; and Mr. H. Weir, as I am informed by Mr. Tegetmeier, once bred a silver (which means very pale blue) barb from two yellow birds. 240 CHAP. VI. DOMESTIC PIGEONS. which, as I carefully observed in each case, appeared to be perfectly pure: namely, in Pouters, Fantails, Tumblers, Jacobins, Turbits, Barbs, Carriers, Runts of three dis- tinct varieties, Trumpeters, Swallows, and in many other toy-pigeons, which, as being closely allied to C. livia, are not worth enumerating. Thus we see that, in purely- bred races of every kind known in Europe, blue birds oc- casionally appear having all the marks which charac- terise C. livia, and which concur in no other wild species. Mr. Blyth, also, has made the same observation with re- spect to the various domestic races known in India. Certain variations in the plumage are equally common in the wild C. livia, in dovecot-pigeons, and in all the most highly modified races. Thus, in all, the croup varies from white to blue, being most frequently white in Eu- rope, and very generally blue in India.25 We have seen that the wild C. livia in Europe, and dovecots in all parts of the world, often have the upper wing-coverts chequered with black; and all the most distinct races, when blue, are occasionally chequered in precisely the same manner. Thus I have seen Pouters, Fantails, Carriers, Turbits, Tumblers (Indian and English), Swallows, Bald-pates, and other toy-pigeons blue and chequered; and Mr. Es- quilant has seen a chequered Runt. I bred from two pure blue Tumblers a chequered bird. The facts hitherto given refer to the occasional appear- ance in pure races of blue birds with black wing-bars, and likewise of blue and chequered birds; but it will now be seen that when two birds belonging to distinct races are crossed, neither of which have, nor probably 25 Mr. Blyth informs me that all the domestic races in India have the croup blue; but this is not invariable, for I possess a very pale blue Simmali pigeon with the croup perfectly wbite, sent to me by Sir W. Elliot from Madras. A slaty-blue and chequered Nakshi pigeon has some white feathers on the croup alone. In some other Indian pigeons there were a few white feathers confined to the croup, and I have noticed the same fact in a carrier from Persia. The Java fantail (imported into Amoy, and thence sent me) has a perfectly white croup. CHAP. VI, 241 THEIR REVERSION IN COLOUR. . have had during many generations, a trace of blue in their plumage, or a trace of wing-bars and the other cha- racteristic marks, they very frequently produce mongrel offspring of a blue colour, sometimes chequered, with black wing-bars, &c.; or if not of a blue colour, yet with the several characteristic marks more or less plainly de- veloped. I was led to investigate this subject from MM. Boitard and Corbié 24 having asserted that from crosses between certain breeds it is rare to get anything but bi- sets or dovecot-pigeons, which, as we know, are blue birds with the usual characteristic marks. We shall hereafter see that this subject possesses, independently of our pre- sent object, considerable interest, so that I will give the results of my own trials in full. I selected for experiment races which, when pure, very seldom produce birds of a blue colour, or have bars on their wings and tail. The nun is white, with the head, tail, and primary wing-feathers black; it is a breed which was established as long ago as the year 1600. I crossed a male nun with a female red common tumbler, which latter variety gen- erally breeds true. Thus neither parent had a trace of blue in the plumage, or of bars on the wing and tail. I should premise that common tumblers are rarely blue in England. From the above cross I reared several young: one was red over the whole back, but with the tail as blue as that of the rock-pigeon; the terminal bar, how. ever, was absent, but the outer feathers were edged with white: a second and third nearly resembled the first, but the tail in both presented a trace of the bar at the end: a fourth was brownish, and the wings showed a trace of the double bar: a fifth was pale blue over the whole breast, back, croup, and tail, but the neck and primary wing-feathers were reddish; the wings presented two dis- tinct bars of a red colour; the tail was not barred, but the outer feathers were edged with white. I crossed this 26 Les Pigeons,' &c., p. 37. 11 242 CHAP. VI. DOMESTIC PIGEONS. last curiously colored bird with a black mongrel of com- plicated descent, namely, from a black barb, a spot, and almond tumbler, so that the two young birds produced from this cross included the blood of five varieties, none of which had a trace of blue, or of wing and tail bars : one of the two young birds was brownish-black, with black wing-bars; the other was reddish-dun, with red- dish wing-bars, paler than the rest of the body, with the croup pale blue, the tail bluish, with a trace of the termi- nal bar. Mr. Eaton 27 matched two short-faced tumblers, name- ly, a splash cock and kite hen (neither of which are blue or barred), and from the first nest he got a perfect blue bird, and from the second a silver or pale blue bird, both of which, in accordance with all analogy, no doubt pre- sented the usual characteristic marks. I crossed two male black barbs with two female red spots. These latter have the whole body and wings white, with a spot on the forehead, the tail and tail-cov- erts red; the race existed as least as long ago as 16976, and now breeds perfectly true, as was known to be the case in the year 1735.28 Barbs alle uniformly-colored birds, with rarely even a trace of bars on the wing or tail; they are known to breed very true. The mongrels thus raised were black or nearly black, or dark or pale brown, sometimes slightly piebald with white: of these birds no less than six presented double wing-bars; in two the bars were conspicuous and quite black; in seven some white feathers appeared on the croup; and in two or three there was a trace of the terminal bar to the tail, but in none were the outer tail-feathers edged with white. I crossed black barbs (of two excellent strains) with purely-bred, snow-white fantails. The mongrels were generally quite black, with a few of the primary wing 27 Treatise on Pigeons,'1858p. 145. 28 J. Moore's Columbarium,' 1735, in J. M. Eaton's edition, 1852, p. 71, CHAP. VI. 243 THEIR REVERSION IN COLOUR. and tail-feathers white: others were dark reddish-brown, and others snow-white: none had a trace of wing-bars or of the white croup. I then paired together two of these mongrels, namely, a brown and black bird, and their offspring displayed wing-bars, faint, but of a darker brown than the rest of body. In a second brood from the same parents a brown bird was produced, with seve- ral white feathers confined to the croup. . I crossed a male dun dragon belonging to a family which had been dun-coloured without wing-bars during several generations, with a uniform red barb (bred from two black barbs); and the offspring presented decided but faint traces of wing-bars. I crossed a uniform red male runt with a white trumpeter; and the offspring had a slaty-blue tail, with a bar at the end, and with the outer feathers edged with white. I also crossed a female black and white chequered trumpeter (of a different strain from the last) with a male almond-tumbler, neither of which exhibited a trace of blue, or of the white croup, or of the bar at end of tail: nor is it probable that the progenitors of these two birds had for many generations exhibited any of these characters, for I have never even heard of a blue trumpeter in this country, and my al- mond-tumbler was purely bred; yet the tail of this mongrel was bluish, with a broad black bar at the end, and the croup was perfectly white. It It may be observed in several of these cases, that the tail first shows a ten- dency to become by reversion blue; and this fact of the persistency of colour in the tail and tail-coverts will surprise no one who has attended to the crossing of pigeons. 29 I could give numerous examples; two will suffice. A mongrel, whose four grandparents were a white turbit, white trumpeter, white fantail, and blue pouter, was white all over, except a very few feathers about the head and on the wings, but the whole tail and tail-coverts were dark bluish-grey. Another mon- grel, whose four grandparents were a red runt, white trumpeter, white fantail, and the same blue pouter, was pure white all over, except the tail and upper tail-coverts, which were pale fawn, and except the faintest trace of double wing. bars of the same pale fawn tint, 244 CHAP. VI. DOMESTIC PIGEONS. The last case which I will give is the most curious. I paired a mongrel female barb-fantail with a mongrel male barb-spot; neither of which mongrels had the least blue about them. Let it be remembered that blue barbs are excessively rare; that spots, as has been already stated, were perfectly characterized in the year 1676, and breed perfectly true; this likewise is the case with white fantails, so much so that I have never heard of white fantails throwing any other colour. Neverthe- less the offspring from the above two mongrels was of exactly the same blue tint as that of the wild rock-pigeon from the Shetland Islands over the whole back and wings; the double black wing-bars were equally conspicuous; the tail was exactly alike in all its characters, and the croup was pure white; the head, however, was tinted with a shade of red, evidently derived from the spot, and was of a paler blue than in the rock-pigeon, as was the stomach. So that two black barbs, a red spot, and a white fantail, as the four purely-bred grandparents, pro- duced a bird of the same general blue colour, together with every characteristic mark, as in the wild Columba livia. . With respect to crossed breeds frequently producing blue birds chequered with black, and resembling in all respects both the dovecot-pigeon and the chequered wild variety of the rock-pigeon, the statement before referred to by MM. Boitard and Corbié would almost suffice; but I will give three instances of the appearance of such birds from crosses in which one alone of the pa- rents or great-grandparents was blue, but not chequered. I crossed a male blue turbit with a snow-white trumpet- er, and the following year with a dark, leaden-brown, short-faced tumbler; the offspring from the first cross were as perfectly chequered as any dovecot-pigeon; and from the second, so much so as to be nearly as black as the most darkly chequered rock-pigeon from Madeira. Another bird, whose great-grandparents were a white CHAP, VI. 245 THEIR REVERSION IN COLOUR. If we trumpeter, a white fantail, a white red-spot, a red runt, and a blue pouter, was slaty-blue and chequered exactly like a dovecot-pigeon. I may here add a remark made to me by Mr. Wicking, who has had more experience than any other person in England in breeding pigeons of various colours: namely, that when a blue, or a blue and chequered bird, having black wing-bars, once appears in any race and is allowed to breed, these characters are so strongly transmitted that it is extremely difficult to eradicate them. What, then, are we to conclude from this tendency in all the chief domestic races, both when purely bred and more especially when intercrossed, to produce offspring of a blue colour, with the same characteristic marks, vary- ing in the same manner, as in Columba livia? admit that these races have all descended from C. livia, no breeder will doubt that the occasional appearance of blue birds thus characterised is accounted for on the well- known principle of “throwing back” or reversion. Why crossing should give so strong a tendency to reversion, we do not with certainty know; but abundant evidence of this fact will be given in the following chapters. It is probable that I might have bred even for a century pure black barbs, spots, nuns, white fantails, trumpeters, &c., without obtaining a single blue or barred bird; yet by crossing these breeds I reared in the first and second gen- eration, during the course of only three or four years, a considerable number of young birds, more or less plainly coloured blue, and with most of the characteristic marks. When black and white, or black and red birds, are crossed, it would appear that a slight tendency exists in both pa- rents to produce blue offspring, and that this, when com- bined, overpowers the separate tendency in either parent to produce black, or white, or red offspring. If we reject the belief that all the races of the pigeon are the modified descendants of C. livia, and suppose that they are descended from several aboriginal stocks, then 246 CAAP. VI. DOMESTIC PIGEONS. we must choose between the three following assumptions: firstly, that at least eight or nine species formerly existed which were aboriginally coloured in various ways, but have since varied in so exactly the same manner as to assume the colouring of C. livia ; but this assumption throws not the least light on the appearance of such col- ours and marks when the races are crossed. Or secondly, we may assume that the aboriginal species were all col- oured blue, and had the wing-bars and other characteristic marks of C. livia,-a supposition which is highly im- probable, as besides this one species no existing member of the Columbidæ presents these combined characters; and it would not be possible to find any other instance of several species identical in plumage, yet as different in important points of structure as are pouters, fantails, car- riers, tumblers, &c. Or lastly, we may assume that all the races, whether descended from C.livia or from several aboriginal species, although they have been bred with so much care and are so highly valued by fanciers, have all been crossed within a dozen or score of generations with C. livia, and have thus acquired their tendency to produce blue birds with the several characteristic marks. I have said that it must be assumed that each race has been cross- ed with C. livia within a dozen, or, at the utmost, within a score of generations; for there is no reason to believe that crossed offspring ever revert to one of their ances- tors when removed by a greater number of generations. In a breed which has been crossed only once, the tendency to reversion will naturally become less and less in the suc- ceeding generations, as in each there will be less and less of the blood of the foreign breed; but when there has been no cross with a distinct breed, and there is a tendency in both parents to revert to some long-lost character, this tendency, for all that we can see to the contrary, may be transmitted undiminished for an indefinite number of generations. These two distinct cases of reversion are CHAP. VI. THEIR REVERSION IN COLOUR. 247 often confounded together by those who have written on inheritance. Considering, on the one hand, the improbability of the three assumptions which have just been discussed, and, on the other hand, how simply the facts are explained on the principle of reversion, we may conclude that the occa- sional appearance in all the races, both when purely bred and more especially when crossed, of blue birds, some- times chequered, with double wing-bars, with white or blue croups, with a bar at the end of the tail, and with the outer tail-feathers edged with white, affords an argument of the greatest weight in favour of the view that all are descended from Columba livia, including under this name the three or four wild varieties or sub-species before enu- merated. To sum up the six foregoing arguments, which are opposed to the belief that the chief domestic races are the descendants of at least eight or nine or perhaps a dozen species; for the crossing of any less number would not yield the characteristic differences between the seve- ral races. Firstly, the improbability that so many spe- cies should still exist somewhere, but be unknown to ornithologists, or that they should have become within the historical period extinct, although man has had so little influence in exterminating the wild C. livia. Secondly, the improbability of man in former times having thoroughly domesticated and rendered fertile under confinement so many species. Thirdly, these sup- posed species having nowhere become feral. Fourthly, the extraordinary fact that man should, intentionally or by chance, have chosen for domestication several species, extremely abnormal.in character; and furthermore, the points of structure which render these supposed species so abnormal being now highly variable. Fifthly, the fact of all the races, though differing in many important points of structure, producing perfectly fertile mongrels; whilst all the hybrids which have been produced between 248 CHIP. VI. DOMESTIC PIGEONS. even closely allied species in the pigeon-family are sterile. Sixthly, the remarkable statements just given on the tendency in all the races, both when purely bred and when crossed, to revert in numerous minute details of colouring to the character of the wild rock-pigeon, and to vary in a similar manner. To these arguments may be added the extreme improbability that a number of species formerly existed, which differed greatly from each other in some few points, but which resembled each other as closely as do the domestic races in other points of structure, in voice, and in all their habits of life. When these several facts and arguments are fairly taken into consideration, it would require an overwhelming amount of evidence to make us admit that the chief domestic races are descended from several aboriginal stocks; and of such evidence there is absolutely none. The belief that the chief domestic races are descended from several wild stocks no doubt has arisen from the apparent improbability of such great modifications of structure having been effected since man first domesti- cated the rock-pigeon. Nor am I surprised at any degree of hesitation in admitting their common origin: formerly, when I went into my aviaries and watched such birds as pouters, carriers, barbs, fantails, and short-faced tumblers, &c., I could not persuade myself that they had all descended from the same wild stock, and that man had consequently in one sense created these remarkable modi- fications. Therefore I have argued the question of their origin at great, and, as some will think, superfluous length. Finally, in favour of the belief that all the races are descended from a single stock, we have in Columbia livia a still existing and widely distributed species, which can be and has been domesticated in various countries. This species agrees in most points of structure and in all its habits of life, as well as occasionally in every detail of plumage, with the several domestic races. It breeds CHAP. VI. 249 FORMATION OF RACES. freely with them, and produces fertile offspring. It varies in a state of nature, sº and still more so when semi- domesticated, as shown by comparing the Sierra Leone pigeons with those of India, or with those which appa- rently have run wild in Madeira. It has undergone a still greater amount of variation in the case of the numerous toy-pigeons, which no one supposes to be descended from distinct species; yet some of these toy- pigeons have transmitted their character truly for centu- ries. Why, then, should we hesitate to believe in that greater amount of variation which is necessary for the production of the eleven chief races? It should be borne in mind that in two of the most strongly-marked races, namely, carriers and short-faced tumblers, the extreme forms can be connected with the parent-species by gradu- ated differences not greater than those which may be observed between the dovecot-pigeons inhabiting differ- ent countries, or between the various kinds of toy- pigeons,-gradations which must certainly be attributed to variation. That circumstances have been eminently favourable for the modification of the pigeon through variation and selection will now be shown. The earliest record, as has been pointed out to me by Professor Lepsius, of pigeons in a domesticated condition, occurs in the fifth Egyptian dynasty, about 3000 B.C. ; 31 but Mr. Birch, of the British Museum, informs me that the pigeon appears in a bill of fare in the previous dynasty. Domestic pigeons are mentioned in Genesis, Leviticus, and Isaiah. In the 32 30 It deserves notice, as bearing on the general subject of variation, that not only C. livia presents several wild forms, re- garded by some naturalists as species and by others as sub-species or as mere varieties, but that the species of several allied genera are in the same predica- ment. This is the case, as Mr. Blyth has remarked to me, with Treron, Palum- bus, and Turtur. 81 Denkmaler,' Abth. ii. Bl. 70. 32 The Dovecote,' by the Rev. E. S. Dixon, 1851, pp. 11-13. Adolphe Pictet (in his 'Les Origines Indo-Européennes,' 1859, p. 399) states that there are in the ancient Sanscrit language between 25 and 30 names for the pigeon, and other 15 or 16 Persian names; none of these are common to the European languages. This fact indicates the antiquity of the domestication in the East of the pigeon. 11* 250 CHAP. VI. DOMESTIC PIGEONS. time of the Romans, as we hear from Pliny,'' immense prices were given for pigeons; “nay, they are come to this pass, that they can reckon up their pedigree and race.” In India, about the year 1600, pigeons were much, valued by Akber Khan: 20,000 birds were carried about with the court, and the merchants brought valuable collections. “The monarchs of Iran and Turan sent him some very rare breeds. His Majesty," says the courtly historian, "by crossing the breeds, which method was never practised before, has improved them astonish- ingly." 1934 Akber Khan possessed seventeen distinct kinds, eight of which were valuable for beauty alone. At about this same period of 1600 the Dutch, according to Aldro- vandi, were as eager about pigeons as the Romans had formerly been. The breeds which were kept during the fifteenth century in Europe and in India apparently dif- fered from each other. Tavernier, in his Travels in 1677, speaks, as does Chardin in 1735; of the vast number of pigeon-houses in Persia; and the former remarks that, as Christians were not permitted to keep pigeons, some of the vulgar actually turned Mahometans for this sole purpose. The Emperor of Morocco had his favourite keeper of pigeons, as is mentioned in Moore's treatise, published 1737. In England, from the time of Willughby in 1678 to the present day, as well as in Germany and in France, numerous treatises have been published on the pigeon. In India, about a hundred years ago, a Persian treatise was written; and the writer thought it no light affair, for he begins with a solemn invocation, "in the name of God, the gracious and merciful.” Many large towns, in Europe and the United States, now have their societies of devoted pigeon-fanciers: at present there are three such societies in London. In India, as I hear from Mr. Blyth, the inhabitants of Delhi and of some other 83 English translation, 1601, book x. ch. xxxvii. 34 'Ayeen Akbery,' translated by F. Gladvin, 4to. edit., vol. i. p. 270. CHAP. VI. 251 FORMATION OF RACES. great cities are eager fanciers. Mr. Layard informs me that most of the known breeds are kept in Ceylon. In China, according to Mr. Swinhoe of Amoy, and Dr. Lockhart of Shangai, carriers, fantails, tumblers, and other varieties are reared with care, especially by the bonzes or priests. The Chinese fasten a kind of whistle to the tail-feathers of their pigeons, and as the flock wheels through the air they produce a sweet sound. In Egypt the late Abbas Pacha was a great fancier of fantails. Many pigeons are kept at Cairo and Constanti- nople, and these have lately been imported by native merchants, as I hear from Sir W. Elliot, into Southern India, and sold at high prices. The foregoing statements show in how many countries, and during how long a period, many men have been pas- sionately devoted to the breeding of pigeons. Hear how an enthusiastic fancier at the present day writes: “If it were possible for noblemen and gentlemen to know the amazing amount of solace and pleasure derived from Almond Tumblers, when they begin to understand their properties, I should think that scarce any nobleman or gentleman would be without their aviaries of Almond Tumblers." 35 The pleasure thus taken is of paramount importance, as it leads amateurs carefully to note and preserve each slight deviation of structure which strikes their fancy. Pigeons are often closely confined during their whole lives; they do not partake of their naturally varied diet; they have often been transported from one climate to another; and all these changes in their condi- tions of life would be likely to cause variability. Pigeons have been domesticated for nearly 5000 years, and have been kept in many places, so that the numbers reared under domestication must have been enormous; and this is another circumstance of high importance, for it obvi- ously favours the chance of rare modifications of structure 35 J. M. Eaton, Treatise on the Almond Tumbler,' 1851; Preface, p. vi. 252 CHAP, VI. DOMESTIC PIGEONS. occasionally appearing. Slight variations of all kinds would almost certainly be observed, and, if valued, would, owing to the following circumstances, be preserved and propagated with unusual facility. Pigeons, differently from any other domesticated animal, can easily be mated for life, and, though kept with other pigeons, they rarely prove unfaithful to each other. Even when the male does break his marriage vow, he does not permanently desert his mate. I have bred in the same aviaries many pigeons of different kinds, and never reared a single bird of an impure strain. Hence a fancier can with the great- est ease select and match his birds. He will also soon see the good results of his care; for pigeons breed with extraordinary rapidity. He may freely reject inferior birds, as they serve at an early age as excellent food. To sum up, pigeons are easily kept, paired, and selected; vast numbers have been reared; great zeal in breeding them has been shown by many men in various countries; and this would lead to their close discrimination, and to a strong desire to exhibit some novelty, or to surpass other fanciers in the excellence of already established breeds. 36 History of the principal Races of the Pigeon. Before discussing the means and steps by which the chief races have been formed, it will be advisable to give some historical details, for more is known of the history of the pigeon, little though this be, than of any other domesticated animal. Some of the cases are in- teresting as proving how long domestic varieties may be propagated with exactly the same or nearly the same characters; and other cases are still more interesting as showing how slowly but steadily races have been greatly modified during successive generations. In the last chapter I stated that Trumpeters and Laughers, both so remark- able for their voices, seem to have been perfectly characterized in 1735 ; and Laughers were apparently known in India before the year 1600. Spots in 1676, and Nuns in the time of Aldrovandi, be- fore 1600, were coloured exactly as they now are. Common Tum- 36 As, in the following discussion I state that this chapter was completed in often speak of the present time, I should the year 1855. CEAP. VI. HISTORY OF THE PRINCIPAL RACES. - 253 blers and Ground Tumblers exhibited in India, before the year 1600, the same extraordinary peculiarities of flight as at the present day, for they are well described in the 'Ayeen Akbery. These breeds may all have existed for a much longer period ; we know only that they were perfectly characterized at the dates above given. The average length of life of the domestic pigeon is probably about five or six years; if so, some of these races have retained their character perfectly for at least forty or fifty generations. Pouters.—These birds, as far as a very short description serves for comparison, appear to have been well characterized in Aldrovandi's time, 37 before the year 1600. Length of body and length of leg are at the present time the two chief points of excellence. In 1735 Moore said (see Mr. J. M. Eaton's edition)-and Moore was a first- rate fancier—that he once saw a bird with a body 20 inches in length, " though 17 or 18 inches is reckoned a very good length;" and he has seen the legs very nearly 7 inches in length, yet a leg 6 or 68 long “must be allowed to be a very good one." Mr. Bult, the most successful breeder of Pouters in the world, informs me that at pre- sent (1858) the standard length of the body is not less than 18 inches; but he has measured one bird 19 inches in length, and has heard of 20 and 22 inches, but doubts the truth of these latter statements. The standard length of the leg is now 7 inches, but Mr. Bult has recently measured two of his own birds with legs 71 long. So that in the 123 years which have elapsed since 1735 there has been hardly any increase in the standard length of the body ; 17 or 18 inches was formerly reckoned a very good length, and now 18 inches is the minimum standard ; but the length of leg seems to have increased, as Moore never saw one quite 7 inches long; now the standard is 7, and two of Mr. Bult's birds measured 74 inches in length. The ex- tremely slight improvement in Pouters, except in the length of the leg, during the last 123 years, may be partly accounted for by the neglect which they suffered, as I am informed by Mr. Bult, until within the last 20 or 30 years. About 1765 38 there was a change of fashion, stouter and more feathered legs being preferred to thin and nearly naked legs. Fantails.-The first notice of the existence of this breed is in In- dia, before the year 1600, as given in the 'Ayeen Akbery ;' date, judging from Aldrovandi, the breed was unknown in Europe. In 1677 Willughby speaks of a Fantail with 26 tail-feathers; in 37 Ornithologie,' 1600, vol. ii. p. 360. 38 A Treatise on Domestic Pigeons,' dedicated to Mr. Mayor, 1765. Preface, 39 Mr. Blyth has given a translation of part of the 'Ayeen Akbery' in An- nals and Mag. of Nat. Hist.,' vol. xix., 1847, p. 104. P. xiv. 254 CHAP. VI. DOMESTIC PIGEONS. 1735 Moore saw one with 36 feathers; and in 1824 MM. Boitard and Corbié assert that in France birds can easily be found with 42 tail- feathers. In England, the number of the tail-feathers is not at present so much regarded as their upward direction and expansion. The general carriage of the bird is likewise now much regarded. • The old descriptions do not suffice to show whether in these latter respects there has been much improvement; but if fantails had formerly existed with their heads and tails touching each other, as at the present time, the fact would almost certainly have been noticed. The Fantails which are now found in India probably show the state of the race, as far as carriage is concerned, at the date of their introduction into Europe; and some, said to have been brought from Calcutta, which I kept alive, were in a marked manner in- ferior to our exhibition birds. The Java Fantail shows the same difference in carriage; and although Mr. Swinhoe has counted 18 and 24 tail-feathers in his birds, a first-rate specimen sent to me had only 14 tail-feathers. Jacobins. This breed existed before 1600, but the hood, judging from the figure given by Aldrovandi, did not enclose the head nearly so perfectly as at present: nor was the head then white; nor were the wings and tail so long, but this last character might have been overlooked by the rude artist. In Moore's time, in 1735, the Jacobin was considered the smallest kind of pigeon, and the bill is said to be very short. Hence either the Jacobin, or the other kinds with which it was then compared, must have been since considerably modified; for Moore's description (and it must be remembered that he was a first-rate judge) is clearly not applicable, as far as size of body and length of beak are concerned, to our present Jacobins. In 1795, judging from Bechstein, the breed had assumed its present character. Turbits.—It has generally been supposed by the older writers on pigeons, that the Turbit is the Cortbeck of Aldrovandi; but if this be the case, it is an extraordinary fact that the characteristic frill should not have been noticed. The beak, moreover, of the Cortbeck is described as closely resembling that of the Jacobin, which shows a change in the one or the other race. The Turbit, with its characteristic frill and bearing its present name, is described by Willughby in 1677; and the bill is said to be like that of the bull- finch,-a good comparison, but now more strictly applicable to the beak of the Barb. The sub-breed called the Owl was well known in Moore's time, in 1735. Tumblers.—Common Tumblers, as well as Ground Tumblers, perfect as far as tumbling is concerned, existed in India before the year 1600; and at this period diversified modes of flight, such as CHAP. VI. HISTORY OF THE PRINCIPAL RACES. 255 flying at night, the ascent to a great height, and manner of descent, seem to have been much attended to, as at the present time, in India. Belon 40 in 1555 saw in Paphlagonia what he describes as "a very new thing, viz. pigeons which flew so high in the air that they were lost to view, but returned to their pigeon-house without separating." This manner of flight is characteristic of our present Tumblers, but it is clear that Belon would have mentioned the act of tumbling if the pigeons described by him had tumbled. Tumblers were not known in Europe in 1600, as they are not mentioned by Aldrovandi, who discusses the flight of pigeons. They are briefly alluded to by Willughby, in 1687, as small pigeons "which show like footballs in the air.” The short-faced race did not exist at this period, as Wil- lughby could not have overlooked birds so remarkable for their small size and short beaks. We can even trace some of the steps by which this race has been produced. Moore in 1735 enumerates correctly the chief points of excellence, but does not give any de- scription of the several sub-breeds; and from this fact Mr. Eaton in- fers 41 that the short-faced Tumbler had not then come to full per- fection. Moore even speaks of the Jacobin as being the smallest pigeon. Thirty years afterwards, in 1765, in the Treatise dedicated to Mayor, short-faced Almond Tumblers are fully described, but the author, an excellent fancier, expressly states in his Preface (p. xiv.) that," from great care and expense in breeding them, they have arrived to so great perfection and are so different from what they were 20 or 30 years past, that an old fancier would have condemned them for no other reason than because they are not like what used to be thought good when he was in the fancy before.” Hence it would appear that there was a rather sudden change in the charac- ter of the short-faced Tumbler at about this period; and there is reason to suspect that a dwarfed and half-monstrous bird, the parent- form of the several short-faced sub-breeds, then appeared. I suspect this because short-faced Tumblers are born with their beaks (ascer- tained by careful measurement) as short, proportionally with the size of their bodies, as in the adult bird ; and in this respect they differ greatly from all other breeds, which slowly acquire during growth their various characteristic qualities. Since the year 1765 there has been some change in one of the chief characters of the short-faced Tumbler, namely, in the length of the beak. Fanciers measure the "head and beak” from the tip. of the beak to the front corner of the eyeball. About the year 1765 40 L'Hist. de la Nature des Oiseaux,' p. 314. 41 Treatise on Pigeons,' 1852, p. 64. 256 CHAP. VI. DOMESTIC PIGEONS. a "head and beak” was considered good,42 which, measured in the usual manner, was of an inch in length; now it ought not to ex- ceed of an inch ; "it is however possible," as Mr. Eaton candidly confesses, " for a bird to be considered as pleasant or neat even at of an inch, but exceeding that length it must be looked upon as un- worthy of attention." Mr. Eaton states that he has never seen in the course of his life more than two or three birds with the "head and beak” not exceeding half an inch in length; "still I believe in the course of a few years that the head and beak will be shortened, and that balf-inch birds will not be considered so great a curiosity as at the present time.” That Mr. Eaton's opinion deserves atten- tion cannot be doubted, considering his success in winning prizes at our exhibitions. Finally in regard to the Tumbler it may be con- cluded from the facts above given that it was originally introduced into Europe, probably first into England, from the East; and that it then resembled our common English Tumbler, or more probably the Persian or Indian Tumbler, with a beak only just perceptibly shorter than that of the common dovecot-pigeon. With respect to the short-faced Tumbler, which is not known to exist in the East, there can hardly be a doubt that the whole wonderful change in the size of the head, beak, body, and feet, and in general carriage, has been produced during the last two centuries by continued selection, aided probably by the birth of a semi-monstrous bird somewhere about the year 1750 Runts. Of their history little can be said. In the time of Pliny the pigeons of Campania were the largest known; and from this fact alone some authors assert that they were Runts. In Aldrovandi's time, in 1600, two sub-breeds existed ; but one of them, the short- beaked, is now extinct in Europe. Barbs.-Notwithstanding statements to the contrary, it seems to me impossible to recognise the barb in Aldrovandi's descriptions and figures; four breeds, however existed in the year 1600 which were evidently allied both to Barbs and Carriers. To show how difficult it is to recognise some of the breeds described by Aldrovandi, I will give the different opinions in regard to the above four kinds, named by him C. Indica, Cretensis, Gutturosa, and Persica. Willughby thought that the Columba Indica was a Turbit, but the eminent fancier Mr. Brent believes that it was an inferior Barb: C. Cretensis, with a short beak and a swelling on the upper mandible, cannot be recognised: C. (falsely called) gutturosa, which from its rostrum, breve, crassum, et tuberosum seems to me to come nearest to the 42 J. M. Eaton's Treatise on the Tumbler,' 1851. Compare p. V. of Pre- Breeding and Managing of the Almond face, p. 9, and p. 32. Chap. VI. HISTORY OF THE PRINCIPAL RACES. 257 Barb, Mr. Brent believes to be a Carrier; and lastly, the C. Persica et Turcica, Mr. Brent thinks, and I quite concur with him, was a short-beaked Carrier with very little wattle. In 1687 the Barb was known in England, and Willughby describes the beak as like that of the Turbit; but it is not credible that his Barb should have had a beak like that of our present birds, for so accurate an observer could not have overlooked its great breadth. English Carrier.- We may look in vain in Aldrovandi's work for any bird resembling our prize Carriers ; the C. Persica et Turcica of this author comes the nearest, but is said to have had a short thick beak; therefore it must have approached in character a Barb, and have differed greatly from our Carriers. In Willughby's time, in 1677, we can clearly recognise the Carrier, but he adds," the bill is not short, but of a moderate length," a description which no one would apply to our present Carriers, so conspicuous for the extra- ordinary length of their beaks. The old names given in Europe to the Carrier, and the several names now in use in India, indicate that Carriers-originally came from Persia; and Willughby's de- scription would perfectly apply to the Bussorah Carrier as it now exists in Madras. In later times we can partially trace the progress of change in our English Carriers : Moore in 1735 says "an inch and a half is reckoned a long beak, though there are very good Carriers that are found not to exceed an inch and a quarter.” These birds must have resembled, or perhaps been a little superior to, the Carriers previously described, which are now found in Persia. In England at the present day “there are," as Mr. Eaton 43 states, “beaks that would measure (from edge of eye to tip of beak) one inch and three-quarters, and some few even two inches in length." From these historical details we see that nearly all the chief domestic races existed before the year 1600. Some remarkable only for colour appear to have been identical with our present breeds, some were nearly the same, some considerably different, and some have since become extinct. Several breeds, such as Finnikins and Turners, the swallow-tailed pigeon of Bechstein and the Carme- lite, seem both to have originated and to have disap- peared within this same period. Any one now visiting a well stocked English aviary would certainly pick out 43 Treatise on Pigeons,' 1852, p. 41. 258 CHAP. VÌ DOMESTIC PIGEONS. as the most distinct kinds, the massive Runt, the Carrier with its wonderfully elongated beak and great wattles, the Barb with its short broad beak and eye-wattles, the short-faced Tumbler with its small conical beak, the Pouter with its great crop, long legs and body, the Fan- tail with its upraised, widely-expanded, well-feathered tail, the Turbit with its frill and short blunt beak, and the Jacobin with its hood. Now, if this same person could have viewed the pigeons kept before 1600 by Akber Khan in India and by Aldrovandi in Europe, he would have seen the Jacobin with a less perfect hood; the Tur- bit apparently without its frill; the Pouter with shorter legs, and in every way less remarkable—that is, if Aldro- vandi's Pouter resembled the old German kind; the Fan- tail would have been far less singular in appearance, and would have had much fewer feathers in its tail ; he would have seen excellent flying Tumblers, but he would in vain have looked for the marvellous short-faced breeds ; he would have seen birds allied to barbs, but it is ex- tremely doubtful whether he would have met with our actual Barbs; and lastly, he would have found Carriers with beaks and wattle incomparably less developed than in our English Carriers. He might have classed most of the breeds in the same groups as at present; but the differences between the groups were then far less strong- ly pronounced than at present. In short, the several breeds had at this early period not diverged in so great a degree from their aboriginal common parent, the wild rock-pigeon. Manner of Formation of the chief Races. We will now consider more closely the probable steps by which the chief races have been formed. As long as pigeons are kept semi-domesticated in dovecots in their native country, without any care in selecting and match- ing them, they are liable to little more variation than the CHAP. VI. 259 FORMATION OF CHIEF RACES. wild C. livia, namely, in the wings becoming chequered with black, in the croup being blue or white, and in the size of the body. When, however, dovecot-pigeons are transported into diversified countries, such as Sierra Leone, the Malay archipelago, and Madeira (where the wild C. livia is not known to exist), they are exposed to new conditions of life; and apparently in consequence they vary in a somewhat greater degree. When closely confined, either for the pleasure of watching them, or to prevent their straying, they must be exposed, even under their native climate, to considerably different conditions ; for they cannot obtain their natural diversity of food ; and, what is probably more important, they are abun- dantly fed, whilst debarred from taking much exercise. Under these circumstances we might expect to find, from the analogy of all other domesticated animals, a greater amount of individual variability than with the wild pigeon; and this is the case. The want o exercise ap- parently tends to reduce the size of the feet and organs of flight; and then, from the law of correlation of growth, the beak apparently becomes affected. From what we now see occasionally taking place in our aviaries, we may conclude that sudden variations or sports, such as the appearance of a crest of feathers on the head, of feathered feet, of a new shade of colour, of an additional feather in the tail or wing, would occur at rare intervals during the many centuries which have elapsed since the pigeon was first domesticated. At the present day such sports” are generally rejected as blemishes; and there is so much mystery in the breeding of pigeons that, if a valuable sport did occur, its history would often be concealed. Before the last hundred and fifty years, there is hardly a chance of the history of any such sport hav- ing been recorded. But it by no means follows from this that such sports in former times, when the pigeon had undergone much less variation, would have been re- jected. We are profoundly ignorant of the cause of 260 CHAP. VI. DOMESTIC PIGEONS. each sudden and apparently spontaneous variation, as well as of the infinitely numerous shades of difference between the birds of the same family. But in a future chapter we shall see that all such variations appear to be the indirect result of changes of some kind in the con- ditions of life. Hence, after a long course of domestication, we might expect to see in the pigeon much individual variability, and occasional sudden variations, as well as slight modi- fications from the lessened use of certain parts, together with the effects of correlation of growth. But without selection all this would produce only a trifling or no re- sult; for without such aid differences of all kinds would, from the two following causes, soon disappear. In a healthy and vigorous lot of pigeons many more young birds are killed for food or die than are reared to matu- rity; so that an individual having any peculiar character, if not selected, would run a good chance of being destroy- ed, and if not destroyed, the peculiarity in question would almost certainly be obliterated by free intercrossing. It might, however, occasionally happen that the same varia- • tion repeatedly occurred, owing to the action of peculiar and uniform conditions of life, and in this case it would pre- vail independently of selection. But when selection is brought into play all is changed; for this is the foundation- stone in the formation of new races; and with the pigeon, circumstances, as we have already seen, are eminently fa- vourable for selection. When a bird presenting some conspicuous variation has been preserved, and its offspring have been selected, carefully matched, and again propa- gated, and so onwards during successive generations, the principle is so obvious that nothing more need be said about it. This may be called methodical selection, for the breeder has a distinct object in view, namely, to pre- serve some character which has actually appeared; or to create some improvement already pictured in his mind. Another form of selection has hardly been noticed by CHAP. VI. 261 FORMATION OF CHIEF RACES. those authors who have discussed this subject, but is even more important. This form may be called unconscious selection, for the breeder selects his birds unconsciously, unintentionally, and without method, yet he surely though slowly produces a great result. I refer to the effects which follow from each fancier at first procuring and afterwards rearing as good birds as he can, according to his skill, and according to the standard of excellence at each suc- cessive period. He does not wish permanently to modify the breed; he does not look to the distant future, or speculate on the final result of the slow accumulation dur- ing many generations of successive slight changes: he is content if he possesses a good stock, and more than con- tent if he can beat his rivals. The fancier in the time of Aldrovandi, when in the year 1600 he admired his own jacobins, pouters, or carriers, never reflected what their descendants in the year 1860 would become; he would have been astonished could he have seen our jacobins, our improved English carriers, and our pouters; he would probably have denied that they were the descendants of his own once admired stock, and he would perhaps not have valued them, for no other reason, as was written in 1765, “than because they were not like what used to be thought good when he was in the fancy.” No one will attribute the lengthened beak of the carrier, the shorten- ed beak of the short-faced tumbler, the lengthened leg of the pouter, the more perfectly-enclosed hood of the jacobin, &c.,-changes effected since the time of Aldro- vandi, or even since a much later period, -to the direct and immediate action of the conditions of life. For these several races have been modified in various and even in directly opposite ways, though kept under the same cli- mate and treated in all respects in as nearly uniform a manner as possible. Each slight change in the length or shortness of the beak, in the length of leg, &c., has no doubt been indirectly and remotely caused by some change in the conditions to which the bird has been subjected, 262 CHAP. VI. DOMESTIC PIGEONS. but we must attribute the final result, as is manifest in those cases of which we have any historical record, to the continued selection and accumulation of many slight suc- cessive variations. The action of unconscious selection, as far as pigeons are concerned, depends on a universal principle in human nature, namely, on our rivalry, and desire to outdo our neighbours. We see this in every fleeting fashion, even in our dress, and it leads the fancier to endeavour to ex- aggerate every peculiarity in his breeds. A great autho- rity on pigeons 44 says, “Fanciers do not and will not ad- mire a medium standard, that is, half and half, which is neither here nor there, but admire extremes.” After re- marking that the fancier of short-faced beard tumblers wishes for a very short beak, and that the fancier of long- faced beard tumblers wishes for a very long beak, he says, with respect to one of intermediate length, “Don't deceive yourself. Do you suppose for a moment the short or the long-faced fancier would accept such a bird as a gift ? Certainly not; the short-faced fancier could see no beauty in it; the long-faced fancier would swear there was no use in it, &c.” In these comical passages, written seriously, we see the principle which has ever guided fan- ciers, and has led to such great modifications in all the domestic races which are valued solely for their beauty or curiosity. Fashions in pigeon-breeding endure for long periods; we cannot change the structure of a bird as quickly as we can the fashion of our dress. In the time of Aldro- vandi, no doubt the more the pouter inflated his crop, the more he was valued. Nevertheless, fashions do to a cer- tain extent change; first one point of structure and then another is attended to; or different breeds are admired at different times and in different countries. As the author just quoted remarks, “the fancy ebbs and flows; a tho- 44 Eaton's "Treatise on Pigeons,' 1858, p. 86. CHAP. VI. 263 FORMATION OF CHIEF RACES. rough fancier now-a-days never stoops to breed toy-birds;" yet these very “toys” are now most carefully bred in Germany. Breeds which at the present time are highly valued in India are considered worthless in England. No doubt, when breeds are neglected, they degenerate; still we may believe that, as long as they are kept under the same conditions of life, characters once gained will be partially retained for a long time, and may form the starting-point for a future course of selection. Let it not be objected to this view of the action of un- conscious selection that fanciers would not observe or care for extremely slight differences. Those alone who have associated with fanciers can be thoroughly aware of their accurate powers of discrimination acquired by long practice, and of the care and labour which they bestow on their birds. I have known a fancier deliberately study his birds day after day to settle which to match together and which to reject. Observe how difficult the subject appears to one of the most eminent and experienced fan- ciers. Mr. Eaton, the winner of many prizes, says, “I would here particularly guard you against keeping too great a variety of pigeons, otherwise you will know a lit- tle about all the kinds, but nothing about one as it ought to be known.” “It is possible there may be a few fan- ciers that have a good general knowledge of the several fancy pigeons, but there are many who labour under the delusion of supposing they know what they do not." Speaking exclusively of one sub-variety of one race, namely, the short-faced almond tumbler, and after saying that some fanciers sacrifice every property to obtain a good head and beak, and that other fanciers sacrifice everything for plumage, he remarks: “Some young fan- ciers who are over covetous go in for all the five proper- ties at once, and they have their reward by getting nothing." In India, as I hear from Mr. Blyth, pigeons are likewise selected and matched with the greatest care. But we must not judge of the slight differences which 264 CHAP. VI. DOMESTIC PIGEONS. would have been valued in ancient days, by those which are now valued after the formation of many races, each with its own standard of perfection, kept uniform by our numerous Exhibitions. The ambition of the most ener- getic fancier may be fully satisfied by the difficulty of ex- celling other fanciers in the breeds already established, without trying to form a new one. A difficulty with respect to the power of selection will perhaps already have occurred to the reader, namely, what could have led fanciers first to attempt to make such singular breeds as pouters, fantails, carriers, &c. ? But it is this very difficulty which the principle of un- conscious selection removes. Undoubtedly no fancier ever did intentionally make such an attempt. All that we need suppose is that a variation occurred sufficiently marked to catch the discriminating eye of some ancient fancier, and then unconscious selection carried on for many generations, that is, the wish of succeeding fanciers to excel their rivals, would do the rest. In the case of the fantail we may suppose that the first progenitor of the breed had a tail only slightly erected, as may now be seen in certain runts, with some increase in the number of the tail-feathers, as now occasionally occurs with nuns. In the case of the pouter we may suppose that some bird inflated its crop a little more than other pigeons, as is now the case in a slight degree with the esophagus of the turbit. We do not in the least know the origin of the common tumbler, but we may suppose that a bird was born with some affection of the brain, leading it to make somersaults in the air, and the diffi- culty in this case is lessened, as we know that, before the year 1600, in India, pigeons remarkable for their diversified manner of flight were much valued, and by 45 See Neumeister's figure of the Florence runt, tab. 13, in "Das Ganze der Tau- benzucht.' CHAP, VI. FORMATION OF CHIEF RACES. 265 the order of the Emperor Akber Khan were sedulously trained and carefully matched. In the foregoing cases we have supposed that a sudden variation, conspicuous enough to catch a fancier's eye, first appeared; but even this degree of abruptness in the process of variation is not necessary for the formation of a new breed. When the same kind of pigeon has been kept pure, and has been bred during a long period by two or more fanciers, slight differences in the strain can often be recognised. Thus I have seen first-rate jacobins in one man's possession which certainly differed slightly in several characters from those kept by another. I pos- sessed some excellent barbs descended from a pair which had won a prize, and another lot descended from a stock formerly kept by that famous fancier Sir John Sebright, and these plainly differed in the form of the beak; but the differences were so slight, that they could hardly be described by words. Again, the common English and Dutch tumbler differ in a somewhat greater degree, both in length of beak and shape of head. What first caused these slight differences cannot be explained any more than why one man has a long nose and another a short In the strains long kept distinct by different fan- ciers, such differences are so common that they cannot be accounted for by the accident of the birds first chosen for breeding having been originally as different as they The explanation no doubt lies in selection of a slightly different nature having been applied in each case; for no two fanciers have exactly the same taste, and consequently no two, in choosing and carefully matching their birds, prefer or select exactly the same. As each man naturally admires his own birds, he goes on continually exaggerating by selection whatever slight peculiarities they may possess. This will more especially happen with fanciers living in different countries, who do not compare their stocks and aim at a common stand- ard of perfection. Thus, when a mere strain has once 12 one. now are. 266 CHAP. VI. DOMESTIC PIGEONS. been formed, unconscious selection steadily tends to augment the amount of difference, and thus converts the strain into a sub-breed, and this ultimately into a well- marked breed or race. The principle of correlation of growth should never be lost sight of. Most pigeons have small feet, apparently caused by their lessened use, and from correlation, as it would appear, their beaks have likewise become reduced in length. The beak is a conspicuous organ, and, as soon as it had thus become perceptibly shortened, fanciers would almost certainly strive to reduce it still more by the continued selection of birds with the shortest beaks ; whilst at the same time other fanciers, as we know has actually been the case, would, in other sub-breeds, strive to increase its length. With the increased length of the beak, the tongue would become greatly lengthened, as would the eyelids with the increased development of the eye-wattles; with the reduced or increased size of the feet the number of the scatellæ would vary; with the length of the wing the number of the primary wing- feathers would differ; and with the increased length of the body in the pouter the number of the sacral vertebræ would be augmented. These important and correlated differences of structure do not invariably characterise any breed; but if they had been attended to and selected with as much care as the more conspicuous external differences, there can hardly be a doubt that they would have been rendered constant. Fanciers could assuredly have made a race of tumblers with nine instead of ten primary wing-feathers, seeing how often the number nine appears without any wish on their part, and indeed in the case of the-white-winged varieties in opposition to their wish. In a similar manner, if the vertebra had been visible and had been attended to by fanciers, as- suredly an additional number might easily have been fixed in the pouter. If these latter characters had once been rendered constant we should never have suspected CHAP. VI. 267 FORMATION OF CHIEF RACES. that they had at first been highly variable, or that they had arisen from correlation, in the one case with the shortness of the wings, and in the other case with the length of the body. In order to understand how the chief domestic races have become distinctly separated from each other, it is important to bear in mind, that fanciers constantly try to breed from the best birds, and consequently that those which are inferior in the requisite qualities are in each generation neglected; so that after a time the less im- proved parent-stocks and many subsequently formed intermediate grades become extinct. This has occurred in the case of the pouter, turbit, and trumpeter, for these highly improved breeds are now left without any links closely connecting them either with each other or with the aboriginal rock-pigeon. In other countries, indeed, where the same care has not been applied, or where the same fashion has not prevailed, the earlier forms may long remain unaltered or altered only in a slight degree, and we are thus sometimes enabled to recover the connecting links. This is the case in Persia and India with the tum- bler and carrier, which there differ but slightly from the rock-pigeon in the proportions of their beaks. So again in Java, the fantail sometimes has only fourteen caudal feathers, and the tail is much less elevated and expanded than in our improved birds; so that the Java bird forms a link between a first-rate fantail and the rock-pigeon. Occasionally a breed may be retained for some particu- lar quality in a nearly unaltered condition in the same country, together with highly modified offshoots or sub- breeds, which are valued for some distinct property. We see this exemplified in England, where the common tum- bler, which is valued only for its flight, does not differ much from its parent-form, the Eastern tumbler; whereas the short-faced tumbler has been prodigiously modified, from being valued, not for its flight, but for other quali- ties. But the common-flying tumbler of Europe has 268 CHAP. VI. DOMESTIC PIGEONS. already begun to branch out into slightly different sub- breeds, such as the common English tumbler, the Dutch roller, the Glasgow house-tumbler, and the long-faced beard tumbler, &c.; and in the course of centuries, unless fashions greatly change, these sub-breeds will diverge through the slow and insensible process of uncon- scious selection, and become modified, in a greater and greater degree. After a time the perfectly graduated links, which now connect all these sub-breeds together, will be lost, for there would be no object and much diffi- culty in retaining such a host of intermediate sub-varie- ties. The principle of divergence, together with the extinc- tion of the many previously existing intermediate forms, is so important for understanding the origin of domestic races, as well as of species in a state of nature, that I will enlarge a little more on this subject. Our third main group includes carriers, barbs, and runts, which are plainly related to each other, yet wonderfully distinct in several important characters. According to the view given in the last chapter, these three races have probably de- scended from an unknown race having an intermediate cha- racter and this from the rock-pigeon. Their characteristic differences are believed to be due to different breeders having at an early period admired different points of structure; and then, on the acknowledged principle of admiring extremes, having gone on breeding, without any thought of the future, as good birds as they could, - carrier-fanciers preferring long beaks with much wat- tle,-barb-fanciers preferring short thick beaks with much eye-wattle,—and runt-fanciers not caring about the beak or wattle, but only for the size and weight of the body. This process will have led to the neglect and final extinction of the earlier, inferior, and intermediate birds; and thus it has come to pass, that in Europe these three races are now so extraordinarily distinct from each other. But in the East, whence they were originally brought, CHAP. VI. 269 FORMATION OF CHIEF RACES. . the fashion has been different, and we there see breeds which connect the highly modified English carrier with the rock-pigeon, and others which to a certain extent connect carriers and runts. Looking back to the time of Aldrovandi, we find that there existed in Europe, before the year 1600, four breeds which were closely allied to carriers and barbs, but which competent au- thorities cannot now identify with our present barbs and carriers; nor can Aldrovandi's runts be identified with our present runts. These four breeds certainly did not differ from each other nearly so much as do our existing English carriers, barbs, and runts. All this is exactly what might have been anticipated. If we could collect all the pigeons which have ever lived, from before the time of the Romans to the present day, we should be able to group them in several lines, diverging from the parent rock-pigeon. Each line would consist of almost insensible steps, occasionally broken by some slightly greater variation or sport, and each would culminate in one of our present highly modified forms. Of the many former connecting links, some would be found to have become absolutely extinct without having left any issue, whilst others though extinct would be seen to be the progenitors of the existing races. I have heard it remarked as a strange circumstance that we occasionally hear of the local or complete ex- tinction of domestic races, whilst we hear nothing of their origin. How, it has been asked, can these losses be com- pensated, and more than compensated, for we know that with almost all domesticated animals the races have largely increased in number since the time of the Romans? But on the view here given, we can understand this apparent contradiction. The extinction of a race within historical times is an event likely to be noticed; but its gradual and scarcely sensible modification through unconscious selection, and its subsequent divergence, either in the same or more commonly in distant countries, into two or 270 CHAP. VI. DOMESTIC PIGEONS. more strains, and their gradual conversion into sub-breeds, and these into well-marked breeds, are events which would rarely be noticed. The death of a tree, that has attained gigantio dimensions, is recorded; the slow growth of smaller trees and their increase in number excite no attention. In accordance with the belief of the great power of selection, and of the little direct power of changed con- ditions of life, except in causing general variability or plasticity of organisation, it is not surprising that dovecot- pigeons have remained unaltered from time immemorial; and that some toy-pigeons, which differ in little else besides colour from the dovecot-pigeon, have retained the same character for several centuries. For when one of these toy-pigeons had once become beautifully and sym- metrically coloured,—when, for instance, a Spot had been produced with the crown of its head, its tail, and tail- coverts of a uniform colour, the rest of the body being snow-white, no alteration or improvement would be desired. On the other hand, it is not surprising that during this same interval of time our highly-bred pigeons have undergone an astonishing amount of change; for in regard to them there is no defined limit to the wish of the fancier, and there is no known limit to the variability of their characters. What is there to stop the fancier desiring to give to his carrier a longer and longer beak, or to his tumbler a shorter and shorter beak? nor has the extreme limit of variability in the beak, if there be any such limit, as yet been reached. Notwithstanding the great improvement effected within recent times in the short-faced almond tumbler, Mr. Eaton remarks, “the field is still as open for fresh competitors as it was one hundred years ago; years ago;” but this is perhaps an exaggerated assertion, for the young of all highly improved fancy birds are extremely liable to disease and death. I have heard it objected that the formation of the several domestic races of the pigeon throws no light on CHAP. VI. 271 FORMATION OF CHIEF RACES. the origin of the wild species of the Columbidæ, because their differences are not of the same nature. The domestic races for instance do not differ, or differ hardly at all, in the relative lengths and shapes of the primary wing-feathers, in the relative length of the hind toe, or in habits of life, as in roosting and building in trees. But the above objection shows how completely the principle of selection has been misunderstood. It is not likely that characters selected by the caprice of man should resemble differences preserved under natural conditions, either from being of direct service to each species, or from standing in correlation with other modified and serviceable struc- tures. Until man selects birds differing in the relative length of the wing-feathers or toes, &c., no sensible change in these parts should be expected. Nor could man do anything unless these parts happened to vary under domestication: I do not positively assert that this is the case, although I have seen traces of such variability in the wing-feathers, and certainly in the tail-feathers. It would be a strange fact if the relative length of the hind toe should never vary, seeing how variable the foot is both in size and in the number of the scutellæ. With respect to the domestic races not roosting or building in trees, it is obvious that fanciers would never attend to or select such changes in habits; but we have seen that the pigeons in Egypt, which do not for some reason like settling on the low mud hovels of the natives, are led, apparently by compulsion, to perch in crowds on the trees. We may even affirm that, if our domestic races had become greatly modified in any of the above specified respects, and it could be shown that fanciers had never attended to such points, or that they did not stand in correlation with other selected characters, the fact, on the principles advocated in this chapter, would have offered a serious difficulty. Let us briefly sum up the last two chapters on the pigeon. We may conclude with confidence that all the 272 CHAP, VI. DOMESTIC PIGEONS. domestic races, notwithstanding their great amount of difference, are descended from the Columba livia, includ- ing under this name certain wild races. But the differ- ences between these latter forms throw no light whatever on the characters which distinguish the domestic races. In each breed or sub-breed the individual birds are more variable than birds in a state of nature; and occasional- ly they vary in a sudden and strongly-marked manner. This plasticity of organisation apparently results from changed conditions of life. Disuse has reduced certain parts of the body. Correlation of growth so ties the or- ganisation together, that when one part varies other parts vary at the same time. When several breeds have once been formed, their intercrossing aids the progress of modi- fication, and has even produced new sub-breeds. But as, in the construction of a building, mere stones or bricks are of little avail without the builder's art, so, in the pro- duction of new races, selection has been the presiding power. Fanciers can act by selection on excessively slight individual differences, as well as on those greater differences which are called sports. Selection is followed methodically when the fancier tries to improve and modi- fy a breed according to a prefixed standard of excellence; or he acts unmethodically and unconsciously, by merely trying to rear as good birds as he can, without any wish or intention to alter the breed. The progress of selection almost inevitably leads to the neglect and ultimate extinc- tion of the earlier and less improved forms, as well as of many intermediate links in each long line of descent, Thus it has come to pass that most of our present races are so marvellously distinct from each other, and from the aboriginal rock-pigeon. CHAP. VII. 273 FOWLS. . CHAPTER VII. FOWLS. BRIEF DESCRIPTIONS OF THE CHIEF BREEDS ARGUMENTS IN FA- VOUR OF THEIR DESCENT FROM SEVERAL SPECIES ARGUMENTS IN FAVOUR OF ALL THE BREEDS HAVING DESCENDED FROM GAL- LUS BANKIVA-KEVERSION TO THE PARENT-STOCK IN COLOUR ANALOGOUS VARIATIONS - ANCIENT HISTORY OF THE FOWL-EX- TERNAL DIFFERENCES BETWEEN THE SEVERAL BREEDS — EGGS CHICKENS SECONDARY SEXUAL CHARACTERS - WING- AND TAIL-FEATHERS, VOICE, DISPOSITION, ETC. OSTEOLOGICAL DIF- FERENCES IN THE SKULL, VERTEBRÆ, ETC. — EFFECTS OF USE AND DISUSE ON CERTAIN PARTS — CORRELATION OF GROWTH. As some naturalists may not be familiar with the chief breeds of the fowl, it will be advisable to give a con- densed description of them. From what I have read and seen of specimens brought from several quarters of the world, I believe that most of the chief kinds have been imported into England, but many sub-breeds are proba- bly still here unknown. The following discussion on the origin of the various breeds and on their characteristic differences does not pretend to completeness, but may be of some interest to the naturalist. The classification of the breeds cannot, as far as I can see, be made natural. 1 I have drawn up this brief synopsis from various sources, but chiefly from information given me by Mr. Tegetmeier. This gentleman has kindly looked through the whole of this chapter, and from his well-known knowledge, the statements here given may be fully trust- ed. Mr. Tegetmeier has likewise assist- ed me in every possible way in obtaining for me information and specimens. I must not let this opportunity pass with- out expressing my cordial thanks to Mr. B. P. Brent, a well-known writer on poul- try, for indefatigable assistance and the gift of many specimens. 12* 274 CHAP. VII. FOWLS. They differ from each other in different degrees, and do not afford characters in subordination to each other, by which they can be ranked in group under group. They seem all to have diverged by independent and different Fig. 50.-Spanish Fowl. roads from a single type. Each chief breed includes dif- ferently coloured sub-varieties, most of which can be truly propagated, but it would be superfluous to describe them. I have classed the various crested fowls as sub-breeds under the Polish fowl; but I have great doubts whether CHAP. VII. 275 DESCRIPTION OF BREEDS. this is a natural arrangement, showing true affinity or blood relationship. It is scarcely possible to avoid laying stress on the commonness of a breed ; and if certain for- eign sub-breeds had been largely kept in this country they would perhaps have been raised to the rank of main- breeds. Several breeds are abnormal in character; that is, they differ in certain points from all wild Gallinaceous birds. At first I made a division of the breeds into nor- mal and abnormal, but the result was wholly unsatisfac- tory. 1. GAME BREED.—This may be considered as the typical breed, as it deviates only slightly from the wild Gallus bankiva, or, as per- haps more correctly named, ferrugineus. Beak strong; comb single and upright. Spurs long and sharp. Feathers closely adpressed to the body. Tail with the normal number of 14 feathers. Eggs often pale-buff. Disposition indomitably courageous, exhibited even in the hens and chickens. An unusual number of differently col- oured varieties exist, such as black and brown-breasted reds, duck- wings, blacks, whites, piles, &c., with their legs of various colours. 2. MALAY BREED.—Body of great size, with head, neck, and legs elongated; carriage erect; tail small, sloping downwards, generally formed of 16 feathers; comb and wattle small; ear-lobe and face red ; skin yellowish ; feathers closely adpressed to the body; neck- hackles short, narrow, and hard: Eggs often pale buff. Chickens feather late. Disposition savage. Of Eastern origin. 3. COCHIN, OR SHANGAI BREED.-Size great; wing-feathers short, arched, much hidden in the soft downy plumage ; barely capable of flight ; tail short, generally formed of 16 feathers, developed at a late period in the young males; legs thick, feathered ; spurs short, thick; nail of middle toe flat and broad; an additional toe not rarely developed ; skin yellowish. Comb and wattle well devel- oped. Skull with deep medial furrow; occipital foramen, sub- triangular, vertically elongated. Voice peculiar. Eggs rough, buff- coloured. Disposition extremely quiet. Of Chinese origin. 4. DORKING BREED.—Size great; body square, compact ; feet with an additional toe; comb well developed, but varies much in form ; wattles well developed ; colour of plumage various. Skull remarkably broad between the orbits. Of English origin. The white Dorking may be considered as a distinct sub-breed, being a less massive bird. 5. SPANISH BREED.—Tall, with stately carriage; tarsi long: comb 276 CHAP. VII. FOWLS. single, deeply serrated, of immense size; wattles largely developed ; the large ear-lobes and sides of face white. Plumage black glossed with green. Do not incubate. Tender in constitution, the comb being often injured by frost. Eggs white, smooth, of large size. Chickens feather late, but the young cocks show their masculine characters, and crow at an early age. Of Mediterranean origin. The Andalusians may be ranked as a sub-breed: they are of a slaty blue colour, and their chickens are well feathered. A smaller, short-legged Dutch sub-breed has been described by some authors as distinct. 6. HAMBURGH BREED (fig. 31).-Size moderate ; comb flat, pro- duced backwards, covered with numerous small points; wattle of moderate dimensions; ear-lobe white; legs blueish, thin. Do not incubate. Skull, with the tips of the ascending branches of the premaxillary and with the nasal bones standing a little separate from each other; anterior margin of the frontal bones less de- pressed than usual. There are two sub-breeds; the spangled Hamburgh, of English origin, with the tips of the feathers marked with a dark spot; and the pencilled Hamburgh, of Dutch origin, with dark transverse lines across each feather, and with the body rather smaller. Both these sub-breeds include gold and silver varieties, as well as some other sub-varieties. Black Hamburghs have been produced by a cross with the Spanish breed. 7. CRESTED OR POLISH BREED (fig. 32).-Head with a large, rounded crest of feathers, supported on a hemispherical protube- rance of the frontal bones, which includes the anterior part of the brain. The ascending branches of the premaxillary bones and the inner nasal processes are much shortened. The orifice of the nos- trils raised and crescentic. Beak short. Comb absent, or small and of crescentic shape; wattles either present or replaced by a beard. like tuft of feathers. Legs leaden-blue. Sexual differences appear late in life. Do not incubate. There are several beautiful varieties which differ in colour and slightly in other respects. The following sub-breeds agree in having a crest, more or less developed, with the comb, when present, of crescentic shape. The skull presents nearly the same remarkable peculiarities of structure as in the true Polish fowl. Sub-breed (a) Sultans.-A Turkish breed, resembling white Polish fowls, with a large crest and beard, with short and well-feathered legs. The tail is furnished with additional sickle feathers. Do not incubate 2 2 The best account of Sultans is by Miss Watts in The Poultry Yard,' 1856, p. 79. I owe to Mr. Brent's kindness the examination of some specimens of this breed. CHAP. VII. 277 DESCRIPTION OF BREEDS. Sub-breed (6) Ptarmigans.-An inferior breed closely allied to the last, white, rather small, legs much feathered, with the crest pointed ; comb small, cupped ; wattles small. Fig. 31.-Hamburgh Fowl. Sub-breed (c) Ghoondooks.—Another Turkish breed having an ex- traordinary appearance; black and tailless; crest and beard large; legs feathered. The inner processes of the two nasal bones come into contact with each other, owing to the complete absorption of the ascending branches of the premaxillaries. I have seen an allied, white, tailless breed from Turkey. Sub-breed (d) Crève-cour.-A French breed of large size, barely capable of flight, with short black legs, head crested, comb produced into two points or horns, sometimes a little branched like the horns of a stag; both beard and wattles present. Eggs large. Disposi- tion quiet. 3 A good description with figures is given of this sub-breed in the Journal of Hor- ticulture,' June 10th, 1862, p. 206. 278 CHAP. VII. FOWLS. Sub-breed (e) Horned fowl.—With a small crest; comb produced into two great points, supported on two bony protuberances. Sub-breed (f) Houdan.- A French breed ; of moderate size, short- legged with five toes, wings well developed ; plumage invariably mottled with black, white, and straw-yellow; head furnished with a crest, and a triple comb placed transversely; both wattles and beard present. Sub-breed (9) Guelderlands.- No comb, head said to be surmoun- ted by a longitudinal crest of soft velvety feathers; nostrils said to be crescentic; wattles well developed ; legs feathered ; colour black. From North America. The Breda fowl seems to be closely allied to the Guelderland. 8. BANTAM BREED. — Originally from Japan, characterized by small size alone; carriage bold and erect. There are several sub- breeds, such as the Cochin, Game, and Sebright Bantams, some of which have been recently formed by various crosses. The Black Bantam has a differently shaped skull, with the occipital foramen like that of the Cochin fowl. 9. RUMP-LESS FOWLs.-- These are so variable in character that they hardly deserve to be called a breed. Any one who will exam- ine the caudal vertebrae will see how monstrous the breed is. 10. CREEPERS OR JUMPERS.-These are characterized by an al- most monstrous shortness of legs, so that they move by jumping rather than by walking; they are said not to scratch up the ground. I have examined a Burmese variety, which had a skull of rather un- usual shape. 11. FRIZZLED OR CAFFRE FOWLS.-Not uncommon in India, with the feathers curling backwards, and with the primary feathers of the wing and tail imperfect; periosteum of bones black. 12. SILK FOWLS.-Feathers silky, with the primary wing and tail- feathers imperfect; skin and periosteum of bones black; comb and wattles dark leaden-blue; ear lappets tinged with blue; legs thin, often furnished with an additional toe. Size rather small. 13. SOOTY FOWLs. - An Indian breed, of a white colour stained with soot, with black skin and periosteum. The hens alone are thus characterized. From this synopsis we see that the several breeds differ 4 A description, with figures, is given of this breed in Journal of Horticul- ture,' June 3rd, 1862, p. 186. Some writers describe the comb as two-horned. 6 Mr. Crawfurd, 'Descript. Dict of the Indian Islands,' p. 113. Bantams are mentioned in an ancient native Japanese Encyclopædia, as I am informed by Mr. Birch of the British Museum. 8 Ornamental and Domestic Poul- try,' 1848. CHAP. VII. 279 DESCRIPTION OF BREEDS. considerably, and they would have been nearly as inter esting for us as pigeons, if there had been equally good Fig. 32.-Polish Fowl. evidence that all had descended from one parent-species. Most fanciers believe that they are descended from sev- eral primitive stocks. The Rev. E. S. Dixon" argues strongly on this side of the question; and one fancier even denounces the opposite conclusion by asking, “Do we not perceive pervading this spirit, the spirit of the Ornamental and Domestic Poultry,' 1848. 280 CHAP. VII, FOWLS. Deist?” Most naturalists, with the exception of a few, such as Temminck, believe that all the breeds have pro- ceeded from a single species; but authority on such a point goes for little. Fanciers look to all parts of the world as the possible sources of their unknown stocks ; thus ignoring the laws of geographical distribution. They know well that the several kinds breed truly even in colour. They assert, but, as we shall see, on very weak grounds, that most of the breeds are extremely ancient. They are strongly impressed with the great difference between the chief kinds, and they ask with force, can dif- ferences in climate, food, or treatment have produced birds so different as the black stately Spanish, the dimi- nutive elegant Bantam, the heavy Cochin with its many peculiarities, and the Polish fowl with its great top-knot and protuberant skull? But fanciers, whilst admitting and even overrating the effects of crossing the various breeds, do not sufficiently regard the probability of the occasional birth, during the course of centuries, of birds with abnormal and hereditary peculiarities; they overlook the effects of correlation of growth of the long-continued use and disuse of parts, and of some direct result from changed food and climate, though on this latter head I have found no sufficient evidence; and lastly, they all, as far as I know, entirely overlook the all-important sub- ject of unconscious or unmethodical selection, though they are well aware that their birds differ individually, and that by selecting the best birds for a few generations they can improve their stocks. An amateur writes 8 as follows. “The fact that poul- try' have until lately received but little attention at the hands of the fancier, and been entirely confined to the domains of the producer for the market, would alone suggest the improbability of that constant and unremit- ting attention having been observed in breeding, which 8 Ferguson's Illustrated Series of Rare and Prize Poultry,' 1854, p. vi., Preface. CIAP. VII. 281 THEIR PARENTAGE. is requisite to the consummating, in the offspring of any two birds, transmittable forms no texhibited by the pa- rents.” This at first sight appears true. But in a future chapter on Selection, abundant facts will be given show- ing not only that careful breeding, but that actual selec- tion was practised during ancient periods, and by barely civilised races of man. In the case of the fowl I can ad- duce no direct facts showing that selection was ancient- ly practised; but the Romans at the commencement of the Christian era kept six or seven breeds, and Columella “particularly recommends as the best, those sorts that have five toes and white ears.” In the fifteenth century several breeds were known and described in Europe; and in China, at nearly the same period, seven kinds were named. A more striking case is that at present, in one of the Philippine Islands, the semi-barbarous inhabitants have distinct native names for no less than nine sub- breeds of the Game Fowl.º Azara, who wrote towards the close of the last century, states that in the interior parts of South America, where I should not have ex- pected that the least care would have been taken of poultry, a black-skinned and black-boned breed is kept, m being considered fertile and its flesh good for sick persons. Now every one who has kept poultry knows how impossible it is to keep several breeds distinct unless the utmost care be taken in separating the sexes. Will it then be pretended that those persons who in ancient times and in semi-civilised countries took pains to keep the breeds distinct, and who therefore valued them, would not occasionally have destroyed inferior birds and occasionally have preserved their best birds? This is all that is required. It is not pretended that any one in an- 9 Rev. E. S. Dixon, in his Ornamen- tal Poultry,' p. 203, gives an account of Columella's work. 10 Mr. Crawfurd On the Relation of the Domesticated Animals to Civiliza- tion,' separately printed, p. 6; first read before the Brit. Assoc. at Oxford, 1869. 11 Quadrupèdes du Paraguay,' tom. ii. p. 324. 282 CHAP. VII. FOWLS. cient times intended to form a new breed, or to modify an old breed according to some ideal standard of excel- lence. He who cared for poultry would merely wish to obtain, and afterwards to rear, the best birds which he could ; but this occasional preservation of the best birds would in the course of time modify the breed, as surely, though by no means as rapidly, as does methodical selec- tion at the present day. If one person out of a hundred or out of a thousand attended to the breeding of his birds, this would be sufficient; for the birds thus tended would soon become superior to others, and would form a new strain; and this strain would, as explained in the last chapter, slowly have its characteristic differences augmented, and at last be converted into a new sub- breed or breed. But breeds .would often be for a time neglected and would deteriorate; they would, however, partially retain their character, and afterwards might again come into fashion and be raised to a standard of perfection higher than their former standard ; as has ac- tually occurred quite recently with Polish fowls. If, how- ever, a breed were utterly neglected, it would become extinct, as has recently happened with one of the Polish sub-breeds. Whenever in the course of past centuries a bird appeared with some slight abnormal structure, such as with a lark-like crest on its head, it would probably often have been preserved from that love of novelty which leads some persons in England to keep rumpless fowls, and others in India to keep frizzled fowls. And after a time any such abnormal appearance would be carefully preserved, from being esteemed a sign of the purity and excellence of the breed; for on this principle the Romans eighteen centuries ago valued the fifth toe and the white ear-lobe in their fowls. Thus from the occasional appearance of abnormal cha- racters, though at first only slight in degree; from the effects of the use and the disuse of parts; possibly from the direct effects of changed climate and food; from cor- Crap. VII. 283 THEIR PARENTAGE. relation of growth; from occasional reversions to old and long-lost characters; from the crossing of breeds, when more than one had once been formed; but, above all, from unconscious selection carried on during many generations, there is no insuperable difficulty, to the best of my judgment, in believing that all the breeds have descended from some one parent-source. Can any sin- gle species be named from which we may reasonably suppose that all have descended? The Gallus bankiva apparently fulfils every requirement. I have already given as fair an account as I could of the arguments in favour of the multiple origin of the several breeds; and now I will give those in favour of their common descent from G. bankiva. But it will be convenient first briefly to describe all the known species of Gallus. The G. Sonneratii does not range into the north- ern parts of India ; according to Colonel Sykes,12 it presents at dif- ferent heights on the Ghauts, two strongly marked varieties, perhaps deserving to be called species. It was at one time thought to be the primitive stock of all our domestic breeds, and this shows that it closely approaches the common fowl in general structure; but its hackles partially consist of highly peculiar, horny laminæ, trans- versely banded with three colours; and I have met with no au- thentic account of any such character having been observed in any domestic breed.13 This species also differs greatly from the com- mon fowl, in the comb being finely serrated, and in the loins being destitute of true hackles. Its voice is utterly different. It crosses readily in India with domestic hens; and Mr. Blyth 14 raised nearly 100 hybrid chickens; but they were tender and mostly died whilst young. Those which were reared were absolutely sterile when crossed inter se or with either parent. At the Zoological Gardens, however, some hybrids of the same parentage were not quite so sterile: Mr. Dixon, as he informed me, made, with Mr. Yarrell's aid, particular inquiries on this subject, and was assured that out 12 'Proc. Zoloog. Soc. 1832, p. 151. 13 I have examined the feathers of some hybrids raised in the Zoological Garders between the male G. Son- neratii and a red game-hen, and these feathers exhibited the true character of those of G. Sonneratii, except that the horny laminæ were much smaller. 14 See also an excellent letter on the Poultry of India, by Mr. Blyth, in Gardener's Chronicle,' 1851, p. 619. 284 CHAP. VII. FOWLS. of 50 eggs only five or six chickens were reared. Some, however, of these half-bred birds were crossed with one of their parents, namely, a Bantam, and produced a few extremely feeble chickens. Mr. Dixon also procured some of these same birds and crossed them in several ways, but all were more or less infertile. Nearly similar experiments have recently been tried on a great scale in the Zoolo- gical Gardens with almost the same result.16 Out of 500 eggs, , raised from various first crosses and hybrids, between G. Sonneratii, bankiva, and varius, only 12 chickens were reared, and of these only three were the product of hybrids inter se. From these facts, and from the above-mentioned strongly-marked differences in structure between the domestic fowl and G. Sonneratii, we may reject this latter species as the parent of any domestic breed. Ceylon possesses a fowl peculiar to the island, viz. G. Stanleyic; this species approaches so closely (except in the colouring of the comb) to the domestic fowl, that Messrs. E. Layard and Kellaert 16 would have considered it, as they inform me, as one of the parent- stocks, had it not been for its singularly different voice. This bird, like the last, crosses readily with tame hens, and even visits solitary farms and ravishes them. Two hybrids, a male and female, thus produced, were found by Mr. Mitford to be quite sterile: both in- herited the peculiar voice of G. Stanleyii. This species, then, may in all probability be rejected as one of the primitive stocks of the domestic fowl. Java and the islands eastward as far as Flores are inhabited by G. varius (or furcatus), which differs in so many characters-green plumage, unserrated comb, and single median wattle—that no one supposes it to have been the parent of any one of our breeds; yet, as I am informed by Mr. Crawfurd, 17 hybrids are commonly raised between the male G. varius and the common hen, and are kept for their great beauty, but are invariably sterile; this, how- ever, was not the case with some bred in the Zoological Gardens. These hybrids were at one time thought to be specifically distinct, and were named G. aneus. Mr. Blyth and others believe that the G. Temminckile (of which the history is not known) is a similar hybrid. Sir J. Brooke sent me some skins of domestic fowls from Borneo, and across the tail of one of these, as Mr, Tegetmeier ob- served, there were transverse blue bands like those which he had 15 Mr. S. J. Salter, in Natural His- 17 See also Mr. Crawfurd's Descrip- tory Review,' April, 1863, p. 276. tive Dict. of the Indian Islands,' 1856, 16 See also Mr. Layard's paper in p. 113. Annals and Mag. of Nat. History, 18 Described by Mr. G. R. Gray, 2nd series, vol. xiv. p. 62. Proc. Zoolog. Soc.', 1949, p. 62. CPAP. VII. 285 THEIR PARENTAGE. seen on the tail-feathers of hybrids from G. varius, reared in the Zoological Gardens. This fact apparently indicates that some of the fowls of Borneo have been slightly affected by crosses with G. varius, but the case may possibly be one of analogous variation. I may just allude to the G. giganteus, so often referred to in works on poultry as a wild species; but Marsden, the first describer, speaks of it as a tame breed; and the specimen in the British Museum evidently has the aspect of a domestic variety. The last species to be mentioned, namely, Gallus bankiva, has a much wider geographical range than the three previous species; it inhabits Northern India as far west as Sinde, and ascends the Hi- malaya to a height of 4000 ft.; it inhabits Burmah, the Malay pe- ninsula, the Indo-Chinese countries, the Philippine Islands, and the Malayan archipelago as far eastward as Timor. This species varies considerably in the wild state. Mr. Blyth informs me that the speci- mens, both male and female, brought from near the Himalaya, are rather paler coloured than those from other parts of India; whilst those from the Malay peninsula and Java are brighter coloured than the Indian birds. I have seen specimens from these countries, and the difference of tint in the hackles was conspicuous. The Malayan hens were a shade redder on the breast and neck than the Indian hens. The Malayan males generally had a red ear-lappet, instead of a white one as in India ; but Mr. Blyth has seen one Indian specimen without the white ear-lappet. The legs are leaden blue in the Indi- an, whereas they show some tendency to be yellowish in the Malayan and Javan specimens. In the former Mr. Blyth finds the tarsus re- markably variable in length. According to Temminck 20 the Timor specimens differ as a local race from that of Java. These several wild varieties have not as yet been ranked as distinct species; if they should, as is not unlikely, be hereafter thus ranked, the cir- cumstance would be quite immaterial as far as the parentage and dif- ferences of our domestic breeds are concerned. The wild G. bankiva agrees most closely with the black-breasted red Game-breed, in co- louring and in all other respects, except in being smaller, and in the tail being carried more horizontally. But the manner in which the tail is carried is highly variable in many of our breeds, for, as Mr. Brent informs me, the tail slopes much in the Malays, is erect in the Games and some other breeds, and is more than erect in Dork- ings, Bantams, &c. There is one other difference, namely, that in 19 The passage from Marsden is given by Mr. Dixon in his 'Poultry Book,' p. 176. No ornithologist now ranks this bird as a distinct species. 20 Coup-d'oeil général sur l'Inde Archipélagique,' tom. iii. (1849), p. 177; see also Mr. Blyth in Indian Sporting Review,' vol. ii. p. 5, 1856. 286 CHAP. VII. FOWLS. G. bankiva, according to Mr. Blyth, the neck-hackles when first moulted are replaced during two or three months, not by other hackles, as with our domestic poultry, but by short blackish feath- ers.21 Mr. Brent, however, has remarked that these black feathers remain in the wild bird after the development of the lower hackles, and appear in the domestic bird at the same time with them ; so that the only difference is that the lower hackles are replaced more slowly in the wild than in the tame bird; but as confinement is known sometimes to affect the masculine plumage, this slight dif- ference cannot be considered of any importance. It is a significant fact that the voice of both the male and female G. banliva closely re- sembles, as Mr. Blyth and others have noted, the voice of both sexes of the common domestic fowl; but the last note of the crow of the wild bird is rather less prolonged. Captain Hutton, well known for his researches into the natural history of India, informs me that he has seen several crossed fowls from the wild species and the Chinese bantam ; these crossed fowls bred freely with bantams, but unfortu- nately were not crossed inter se. Captain Hutton reared chickens from the eggs of the Gallus bankiva ; and these, though at first very wild, afterwards became so tame that they would crowd round his feet. He did not succeed in rearing them to maturity; but, as he remarks, “no wild gallinaceous bird thrives well at first on hard grain.” Mr. Blyth also found much difficulty in keeping G.bankiva in confinement. In the Philippine Islands, however, the natives must succeed better, as they keep wild cocks to fight with their do- mestic game-birds.22 Sir Walter Elliot informs me that the hen of a native domestic breed of Pegu is undistinguishable from the hen of the wild G. bankioa, and the natives constantly catch wild cocks by taking tame cocks to fight with them in the woods.23 Mr. Craw- furd remarks that from etymology it might be argued that the fowl was first domesticated by the Malays and Javanese 24 It is also a curious fact, of which I have been assured by Mr. Blyth, that wild specimens of the Gallus bankiva, bronght from the countries east of the Bay of Bengal, are far more easily tamed than those of India ; nor is this an unparalleled fact, for, as Humboldt long ago remarked, the same species sometimes evinces a more tameable disposition in one country than in another. If we suppose that the G. bankiva was first tamed in Malaya and afterwards imported into India, we 21 Mr. Blyth, in 'Annals and Mag. of Nat. Hist.,' 2nd ser., vol. i. (1848), p. 455. 22 Crawfurd. Desc. Dict. of Indian Islands,' 1856, 112. 23 In Burmah, as I hear from Mr. Blyth, the wild and tame poultry con- stantly cross together, and irregular transitional forms may be seen. 24 Idem, p. 113. CHAP. VII, 287 THEIR PARENTAGE. can understand an observation made to me by Mr. Blyth, that the domestic fowls of India do not resemble the wild G. bankiva more closely than do those of Europe. 25 From the extremely close resemblance in colour, general structure, and especially in voice, between Gallus bankiva and the Game fowl; from their fertility, as far as this has been ascertained, when crossed; from the possibility of the wild species being tamed, and from its varying in the wild state, we may confidently look at it as the pa- rent of the most typical of all the domestic breeds, namely, the Game-fowl. It is a significant fact, that almost all the naturalists in India, namely, Sir W. Elliot, Mr. S. N. Ward, Mr. Layard, Mr. J. C. Jerdon, and Mr. Blyth, who are familiar with G. bankiva, believe that it is the parent of most or all our domestic breeds. But even if it be admitted that G. bankiva is the parent of the Game breed, yet it may be urged that other wild species have been the parents of the other domestic breeds; and that these species still exist, though unknown, in some coun- try, or have become extinct. The extinction, however, of several species of fowls, is an improbable hypothesis, seeing that the four known species have not become ex- tinct in the most anciently and thickly peopled regions of the East. There is, in fact, only one kind of domesticated bird, namely, the Chinese goose or Anser cygnoides; of which the wild parent-form is said to be still unknown, or extinct. For the discovery of new, or the rediscovery of old species of Gallus, we must not look, as fanciers often look, to the whole world. The larger gallinaceous birds, as Mr. Blyth has remarked,20 generally have a re- stricted range; we see this well illustrated in India, where the genus Gallus inhabits the base of the Himalaya, and 25 Mr. Jerdon, in the 'Madras Journ. of Lit. and Science,' vol. xxii. p. 2, speaking of G. bankiva, says, "unques- tionably the origin of most of the va- rieties of our common fowls." For Mr. Blyth, see his excellent article in Gar. dener's Chron. 1851, p. 619; and in Annals and Mag. of Nat. Hist.,' vol. xx., 1847, p. 388. 26 Gardener's Chronicle,' 1851, p. 619. 288 CHAP. VII. FOWLS. is succeeded higher up by Gallophasis, and still higher up by Phasianus. Australia, with its islands, is out of the question as the home for unknown species of the genus. It is, also, as improbable that Gallus should in- habit South America 27 as that a humming-bird should be found in the old world. From the character of the other gallinaceous birds of Africa, it is not probable that Gal- lus is an African genus. We need not look to the west- ern parts of Asia, for Messrs. Blyth and Crawfurd, who have attended to this subject, doubt whether Gallus ever existed in a wild state even as far west as Persia. Al- though the earliest Greek writers speak of the fowl as a Persian bird, this probably merely indicates its line of importation. For the discovery of unknown species we must look to India, to the Indo-Chinese countries, and to the northern parts of the Malay Archipelago. The south- ern portion of China is the most likely country; but as Mr. Blyth informs me, skins have been exported from China during a long period, and living birds are largely 27 I have consulted an eminent autho- rity, Mr. Sclater, on this subject, and he thinks that I have not expressed myself too strongly. I am aware that one an- cient author, Acosta, speaks of fowls as having inhabited S. America at the pe- riod of its discovery, and more recently, about 1795, Olivier de Serres speaks of wild fowls in the forests of Guiana; these were probably feral birds. Dr. Daniell tells me, he believes that fowls have become wild on the west coast of Equatorial Africa; they may, however, not be true fowls, but gallinaceous birds belonging to the genus Phasidus. The old voyager Barbut says that poultry are not natural to Guinea. Capt. W. Allen ("Narrative of Niger Expedition,' 1848, vol. ii. p. 42) describes wild fowls on Ilha dos Rollas, an island near St. Thomas's, on the west coast of Africa : the natives informed him that they had escaped from a vessel wrecked there many years ago; they were extremely wild, and had "a cry quite different to that of the domestic fowl," and their ap- pearance was somewhat changed. Hence it is not a little doubtful, notwithstand- ing the statement of the natives, wheth- er these birds really were fowls. That the fowl has become feral on several is- lands is certain. Mr. Fry, a very capa- ble judge, informed Mr. Layard, in a let- ter, that the fowls which have run wild on Ascension “had nearly all got back to their primitive colours, red and black cocks, and smoky-grey hens." But un- fortunately we do not know the colour of the poultry which were turned out. Fowls have become feral on the Nicobar Islands (Blyth in the Indian Field,' 1858, p. 62), and in the Ladrones (An- son's Voyage). Those found in the Pel- lew Islands (Crawfurd) are believed to be feral; and lastly, it is asserted that they have become feral in New Zealand, but whether this is correct I know not. CHAP. VII. 289 THEIR PARENTAGE. kept there in aviaries, so that any native species of Gal- lus would probably have become known. Mr. Birch, of the British Museum, has translated for me passages from a Chinese Encyclopædia published in 1609, but compiled from more ancient documents, in which it is said that fowls are creatures of the West, and were introduced into the East (i.e. China) in a dynasty 1400 B.C. What- ever may be thought of so ancient a date, we see that the Indo-Chinese and Indian regions were formerly consider- ed by the Chinese as the source of the domestic fowl. From these several considerations we must look to the present metropolis of the genus, namely, to the south- eastern parts of Asia, for the discovery of species which were formerly domesticated, but are now unknown in the wild state; and the most experienced ornithologists do not consider it probable that such species will be dis- covered. In considering whether the domestic breeds are de- scended from one species, namely, G. bankiva, or from several, we must not quite overlook, though we must not exaggerate, the importance of the test of fertility. Most of our domestic breeds have been so often crossed, and their mongrels so largely kept, that it is almost certain, if any degree of infertility had existed between them, it would have been detected. On the other hand, the four known species of Gallus when crossed with each other, or when crossed, with the exception of G. bankiva, with the domestic fowl, produce infertile hybrids. Finally, we have not such good evidence with fowls as with pigeons, of all the breeds having descended from a single primitive stock. In both cases the argument of fertility must go for something; in both we have the im- probability of man having succeeded in ancient times in thoroughly domesticating several supposed species,- most of these supposed species being extremely abnormal as compared with their natural allies--all being now either unknown or extinct, though the parent-form of 13 290 CHAP. VII FOWLS. scarcely any other domesticated bird has been lost. But in searching for the supposed parent-stocks of the various breeds of the pigeon, we were enabled to confine our search to species having peculiar habits of life; whilst with fowls there is nothing in their habits in any marked manner distinct from those of other gallinaceous birds. In the case of pigeons, I have shown that purely-bred birds of every race and the crossed offspring of distinct races frequently resemble, or revert to, the wild rock- pigeon in general colour and in each characteristic mark. With fowls we have facts of a similar nature, but less strongly pronounced, which we will now discuss. Reversion and Analogous Variation. — Purely-bred Game, Malay, Cochin, Dorking, Bantam, and, as I hear from Mr. Tegetmeier, Silk fowls, may frequently or occa. sionally be met with, which are almost identical in plu- mage with the wild G. bankiva. This is a fact well de- serving attention, when we reflect that these breeds rank amongst the most distinct. Fowls thus coloured are called by amateurs black-breasted reds. Hamburghs properly have a very different plumage ; nevertheless, as Mr. Tegetmeier informs me, "the great difficulty in breed- ing cocks of the golden-spangled variety is their tenden- cy to have black breasts and red backs." The males of white Bantams and white Cochins, as they come to maturity, often assume a yellowish or saffron tinge; and the longer neck hackles of black bantam cocks, 2 when two or three years old, not uncommonly become ruddy; these latter bantams occasionally “even moult brassy winged, or actually red shouldered.” So that in these several cases we see a plain tendency to reversion to the hues of G. bankiva, even during the lifetime of the indi- vidual bird. With Spanish, Polish, pencilled Hamburgh, silver-spangled Hamburgh fowls, and with some other 28 Mr. Hewitt, in 'The Poultry Book,' by W. B. Teget meier, 1866, p. 248. CHAP. VII. 291 REVERSION AND VARIATION. less common breeds, I have never heard of a black-breast- ed red bird having appeared. From my experience with pigeons, I made the follow- ing crosses. I first killed all my own poultry, no others living near my house, and then procured, by Mr. Teget- meier's assistance, a first-rate black Spanish cock, and hens of the following pure breeds, -white Game, white Cochin, silver-spangled Polish, silver-spangled Hamburgh, silver-pencilled Hamburgh, and white Silk. In none of these breeds is there a trace of red, nor when kept pure have I ever heard of the appearance of a red feather; though such an occurrence would perhaps not be very improbable with white Games and white Cochins. Of the many chickens reared from the above six crosses the majority were black, both in the down and in the first plumage; some were white, and a very few were mottled black and white. In one lot of eleven mixed eggs from the white Game and white Cochin by the black Spanish cock, seven of the chickens were white, and only four black: I mention this fact to show that whiteness of plu- mage is strongly inherited, and that the belief in the pre- potent power in the male to transmit his colour is not always correct. The chickens were hatched in the spring, and in the latter part of August several of the young cocks began to exhibit a change, which with some of them increased during the following years. Thus a young male bird from the silver-spangled Polish hen was in its first plumage coal-black, and combined in its comb, crest, wattle, and beard, the characters of both parents; but when two years old the secondary wing-feathers, became largely and symmetrically marked with white, and wherever in G. bankiva the hackles are red, they were in this bird greenish-black along the shaft, narrowly bordered with brownish-black, and this again broadly bordered with very pale yellowish-brown; so that in general appearance the plumage had become pale-colour- ed instead of black. In this case, with advancing age 292 CHAP. VI. FOWLS. there was a great change, but no reversion to the red colour of G. bankiva. A cock with a regular rose comb derived either from the spangled or pencilled silver Hamburgh was likewise at first quite black; but in less than a year the neck- hackles, as in the last case, became whitish, whilst those on the loins assumed a decided reddish-yellow tint; and here we see the first symptom of reversion; this likewise occurred with some other young cocks, which need not here be described. It has also been recorded” by a breeder, that he crossed two silver-pencilled Hamburgh hens with a Spanish cock, and reared a number of chick- ens, all of which were black, the cocks having golden and the hens brownish hackles; so that in this instance like- wise there was a clear tendency to reversion. Two young cocks from my white Game hen were at first snow white; of these, one subsequently assumed pale orange-coloured hackles, chiefly on the loins, and the other an abundance of fine orange-red hackles on the neck, loins, and upper wing-coverts. Here again we have a more decided, though partial, reversion to the colours of G. bankiva. This second cock was in fact coloured like an inferior “ pile Game cock ;" —now this sub-breed can be produced, as I am informed by Mr. Te- getmeier, by crossing a black-breasted red Game cock with a white Game hen, and the “pile” sub-breed thus pro- duced can afterwards be truly propagated. So that we have the curious fact of the glossy-black Spanish cock and the black-breasted red Game cock when crossed with white Game-hens producing offspring of nearly the same colours. I reared several birds from the white Silk-hen by the Spanish cock: all were coal-black, and all plainly showed their parentage in having blackish combs and bones; none inherited the so-called silky feathers, and the non- 29 Journal of Horticulture," Jan. 14th, 1862, p. 325. CHAP. VII. 293 REVERSION AND VARIATION. inheritance of this character bas been observed by others. The hens never varied in their plumage. As the young cocks grew old, one of them assumed yellowish-white hackles, and thus resembled in a considerable degree the cross from the Hamburgh hen; the other became a gor- geous bird, so much so that an acquaintance had it pre- served and stuffed simply from its beauty. When stalk- ing about it closely resembled the wild Gallus bankiva, but with the red feathers rather darker. On close com- parison one considerable difference presented itself, namely, that the primary and secondary wing-feathers were edged with greenish-black, instead of being edged, as in G.bankiva, with fulvous and red tints. The space, also, across the back, which bears dark-green feathers, was broader, and the comb was blackish. In all other respects, even in trifling details of plumage, there was the closest accordance. Altogether it was a marvellous sight to compare this bird first with G. bankiva, and then with its father, the glossy green-black Spanish cock, and with its diminutive mother, the white Silk hen. This case of reversion is the more extraordinary as the Span- ish breed has long been known to breed true, and no in- stance is on record of its throwing a single red feather. The Silk hen likewise breeds true, and is believed to be ancient, for Aldrovandi, before 1600, alludes probably to this breed, and describes it as covered with wool. It is so peculiar in many characters that some writers have considered it as specifically distinct; yet, as we now see, when crossed with the Spanish fowl, it yields offspring closely resembling the wild G. bankiva. Mr. Tegetmeier has been so kind as to repeat, at my request, the cross between a Spanish cock and Silk hen, and he obtained similar results; for he thus raised, be- sides a black hen, seven cocks, all of which were dark- bodied with more or less orange-red hackles. In the ensuing year he paired the black hen with one of her brothers, and raised three young cocks, all coloured like their father, and a black hen mottled with white. 294 CAP. VII. FOWLS. The hens from the six above-described crosses showed hardly any tendency to revert to the mottled-brown plumage of the female G. bankiva: one hen, however, from the white Cochin, which was at first coal-black, be- came slightly brown or sooty. Several hens, which were for a long time snow-white, acquired as they grew old a few black feathers. A hen from the white Game, which was for a long time entirely black glossed with green, when two years old had some of the primary wing-feathers greyish-white, and a multitude of feathers over her body. narrowly and symmetrically tipped or laced with white. I had expected that some of the chickens whilst covered with down would have assumed the longitudinal stripes so general with gallinaceous birds; but this did not occur in a single instance. Two or three alone were reddish- brown about their heads. I was unfortunate in losing nearly all the white chickens from the first crosses ; so that black prevailed with the grandchildren ; but they were much diversified in colour, some being sooty, others mottled, and one blackish chicken had its feathers oddly tipped and barred with brown. I will here add a few miscellaneous facts connected with reversion, and with the law of analogous variation. This law implies, as stated in a previous chapter, that the varieties of one species frequently mock distinct but allied species; and this fact is explained, according to the views which I maintain, on the principle of allied species having descended from one primitive form. The white Silk fowl with black skin and bones degenerates, as has been observed by Mr. Hewitt and Mr. R. Orton, in our climate; that is, it reverts to the ordinary colour of the common fowl in its skin and bones, due care having been taken to prevent any cross. In Germany 30 30 Die Hühner und Pfauenzucht.' Ulm, 1827, s. 17. For Mr. Hewitt's state- ment with respect to the white Silk fowl, see the Poultry Book,' by W. B. Teget- meier, 1866, p. 222. I am indebted to Mr. Orton for a letter on the same sub- ject. CE:P. VII. 295 REVERSION AND VARIATION. a distinct breed with black bones, and with black, not silky plumage, has likewise been observed to degen- erate. Mr. Tegetmeier informs me that, when distinct breeds are crossed, fowls are frequently produced with their feathers marked or pencilled by narrow transverse lines of a darker colour. This may be in part explained by direct reversion to the parent-form, the Bankiva hen; for this bird has all its upper plumage finely mottled with dark and rufous brown, with the mottling partially and obscurely arranged in transverse lines. But the tendency to pencilling is probably much strengthened by the law of analogous variation, for the bens of some other species of Gallus are much more plainly pencilled, and the hens of many gallinaceous birds belonging to other genera, as the partridge, have pencilled feathers. Mr. Tegetmeier has also remarked to me, that, although with domestic pigeons we have so great a diversity of colouring, we never see either pencilled or spangled feathers; and this fact is intelligible on the law of ana- logous variation, as neither the wild rock-pigeon nor any closely-allied species has such feathers. The frequent appearance of pencilling in crossed birds probably ac- counts for the existence of " cuckoo” sub-breeds in the Game, Polish, Dorking, Cochin, Andalusian, and Bantam breeds. The plumage of these birds is slaty-blue or grey, with each feather transversely barred with darker lines, so as to resemble in some degree the plumage of the cuckoo. It is a singular fact, considering that the male of no species of Gallus is in the least barred, that the cuckco-like plumage has often been transferred to the male, more especially in the cuckoo Dorking; and the fact is all the more singular, as in gold and silver pencilled Hamburghs, in which pencilling is character- istic of the breed, the male is hardly at all pencilled, this kind of plumage being confined to the female. Another case of analogous variation is the occurrence 296 CHAP. VIL FOWLS. of spangled sub-breeds of Hamburgh, Polish, Malay, and Bantam fowls. Spangled feathers have a dark mark, properly crescent-shaped, on their tips; whilst pencilled feathers have several transverse bars. The spangling cannot be due to reversion to G. bankiva; nor does it often follow, as I hear from Mr. Tegetmeier, from cross- ing distinct breeds; but it is a case of analogous varia- tion, for many gallinaceous birds have spangled feathers, -for instance, the common pheasant. Hence spangled breeds are often called “pheasant”-fowls. Another case of analogous variation in several domestic breeds is in- explicable; it is, that the chickens, whilst covered with down, of the black Spanish, black Game, black Polish, and black Bantam, all have white throats and breasts, and often have some white on their wings. The editor of the ‘Poultry Chronicle' 32 remarks that all the breeds which properly have red ear-lappets occasionally produce birds with white ear-lappets. This remark more especial- ly applies to the Game breed, which of all comes nearest to the G. bankiva ; and we have seen that with this species living in a state of nature, the ear-lappets vary in colour, being red in the Malayan countries, and gen- erally, but not invariably, white in India. In concluding this part of my subject I may repeat that there exists one widely-ranging, varying, and com- mon species of Gallus, namely G. bankiva, which can be tamed, produces fertile offspring when crossed with com- mon fowls, and closely resembles in its whole structure, plumage, and voice the Game breed; hence it may be safely ranked as the parent of this, the most typical do- mesticated breed. We have seen that there is much diffi- culty in believing that other, now unknown, species have been the parents of the other domestic breeds. We know p. 260. 31 Dixon, Ornamental and Domestic Poultry,' pp. 253, 324, 335. For game fowls, see Ferguson on Prize Poultry,' 32 Poultry Chronicle,' vol.ii. p. 71. CHAP. VII. 297 REVERSION AND VARIATION. that all the breeds are most closely allied, as shown by their similarity in most points of structure and in habits, and by the analogous manner in which they vary. We have also seen that several of the most distinct breeds occasionally or habitually closely resemble in plumage G. bankiva, and that the crossed offspring of other breeds, which are not thus coloured, show a stronger or weaker tendency to revert to this same plumage. Some of the breeds, which appear the most distinct and the least likely to have proceeded from G. bankiva, such as Polish fowls, with their protuberant and little ossified skulls, and Co- chins, with their imperfect tail and small wings, bearin these characters the plain marks of their artificial origin. We know well that of late years methodical selection has greatly improved and fixed many characters; and we have every reason to believe that unconscious selection, carried on for many generations, will have steadily augmented each new peculiarity and thus have given rise to new breeds. As soon as two or three breeds had once been formed, crossing would come into play in changing their character and in increasing their number. Brahma Poo- tras, according to an account lately published in America, offer a good instance of a breed, lately formed by a cross, which can be truly propagated. The well-known Sebright Bantams offer another and similar instance. Hence it may be concluded that not only the Game-breed but that all our breeds are probably the descendants of the Ma- layan or Indian variety of G. bankiva. If so, this species has varied greatly since it was first domesticated; but there has been ample time, as we shall now show. History of the Fowl.-Rütimeyer found no remains of the fowl in the ancient Swiss lake-dwellings. It is not mentioned in the Old Testament; nor is it figured on the ancient Egyptian monuments.*3 It is not referred to by 83 Dr. Pickering, in his ' Races of Man,' 1850, p. 374, says that the head and neck of a fowl is carried in a Tribute-pro- cession to thoutmousis III. (1445 B.C.); but Mr. Birch of the British Museum doubts whether the figure can be iden- 13* 298 CHAP. VII. FOWLS, Homer or Hesiod (about 900 B.C.); but is mentioned by Theognis and Aristophanes between 400 and 500 B.C. It is figured on some of the Babylonian cylinders, of which Mr. Layard sent me an impression, between the sixth and seventh centuries B.C.; and on the Harpy Tomb in Lycia, about 600 B.C. : so that we may feel pretty confident that the fowl reached Europe somewhere near the sixth century B.C. It had travelled still farther westward by the time of the Christian era, for it was found in Britain by Julius Cæsar. In India it must have been domesticated when the Institutes of Manu were written, that is, according to Sir W. Jones, 1200 B.C., but, according to the later au- thority of Mr. H. Wilson, only 800 B.C., for the domestic fowl is forbidden, whilst the wild is permitted to be eaten. If, as before remarked, we may trust the old Chinese En- cyclopædia, the fowl must have been domesticated several centuries earlier, as it is said to have been introduced from the West into China 1400 B.C. Sufficient materials do not exist for tracing the history of the separate breeds. About the commencement of the Christian era, Columella mentions a five-toed fighting breed, and some provincial breeds; but we know nothing more about them. He also alludes to dwarf fowls; but these cannot have been the same with our Bantams, which, as Mr. Crawfurd has shown, were imported from Japan into Bantam in Java. A dwarf fowl, probably the tified as the head of a fowl. Some cau- tion is necessary with reference to the absence of figures of the fowl on the ancient Egyptian monuments, on account of the strong and widely prevalent pre- judice against this bird. I am informed by the Rev. S. Erhardt that on the east coast of Africa, from 4° to 6° south of the equator, most of the pagan tribes at the present day hold the fowl in a version. The natives of the Pellew Islands would not eat the fowl, nor will the Indians in some parts of S. America. For the an- cient history of the fowl, see also Volz, Beitrage zur Culturgeschichte,' 1852, s. 77; and Isid. Geoffroy St. Hilaire, 'Hist. Nat. Gen.,' tom. iii. p. 61. Mr. Crawfurd has given an admirable history of the fowl in his paper on the Relation of Domesticated Animals to Civilization,' read before the Brit. Assoc. at Oxford in 1860, and since printed separately. I quote from him on the Greek poet The- ognis, and on the Harpy Tomb described by Sir. C. Fellowes. I quote from a letter of Mr. Blyth's with respect to the Insti- tutes of Manu. CHAP. VII. 299 THEIR HISTORY. true Bantam, is referred to in an old Japanese Encyclo- pædia, as I am informed by Mr. Birch. In the Chinese En- cyclopædia, published in 1596, but compiled from various sources, some of high antiquity, seven breeds are mention- ed, including what we should now call jumpers or creepers, and likewise fowls with black feathers, bones, and flesh. In 1600 Aldrovandi describes seven or eight breeds of fowls, and this is the most ancient record from which the age of our European breeds can be inferred. The Gallus Turcicus certainly seems to be a pencilled Hamburgh; but Mr. Brent, a most capable judge, thinks that Aldro- vandi “evidently figured what he happened to see, and not the best of the breed.” Mr. Brent, indeed, considers all Aldrovandi's fowls as of impure breed; but it is a far more probable view that all our breeds since his time have been much improved and modified; for, as he went to the expense of so many figures, he probably would have secured characteristic specimens. The Silk fowl, however, probably then existed in its present state, as did almost certainly the fowl with frizzled or reversed feath- ers. Mr. Dixon 34 considers Aldrovandi's Paduan fowl as a variety of the Polish,” whereas Mr. Brent believes it to have been more nearly allied to the Malay. The ana- tomical peculiarities of the skull of the Polish breed were noticed by P. Borelli in 1656. I may add that in 1737 one Polish sub-breed, viz. the golden spangled, was known; but judging from Albin's description, the comb was then larger, the crest of feathers much smaller, the breast more coarsely spotted, and the stomach and thighs much blacker: a golden-spangled Polish fowl in this condition would now be of no value. Differences in External and Internal Structure between the Breeds : Individual Variability.-Fowls have been exposed to diversified conditions of life, and as we have 34 "Ornamental and Domestic Poul- try,' 1847, p. 185; for passages trans- lated from Columella, see p. 312. For Golden Hamburghs, see Albin's 'Natu. ral History of Birds,'3 vols., with plates, 1731-38. 300 CHAP. VII. FOWLS. just seen there has been ample time for much variability and for the slow action of unconscious selection. As there are good grounds for believing that all the breeds are descended from Gallus bankiva, it will be worth while to describe in some detail the chief points of dif- ference. Beginning with the eggs and chickens, I will pass on to the secondary sexual characters, and then to the differences in external structure and in the skeleton. I enter on the following details chiefly to show how va- riable almost every character has become under domesti- cation. Eggs.- Mr. Dixon remarks 35 that “to every hen belongs an indi- vidual peculiarity in the form, colour, and size of her egg, which never changes during her life-time, so long as she remains in health, and which is as well known to those who are in the habit of taking her produce, as the handwriting of their nearest acquaintance." I believe that this is generally true, and that, if no great number of hens be kept, the eggs of each can almost always be recognised The eggs of differently sized breeds naturally differ much in size; but, apparently, not always in strict relation to the size of the hen : thus the Malay is a larger bird than the Spanish, but generally she produces not such large eggs; white Bantams are said to lay smaller eggs than other Bantams; 36 white Cochins, on the other hand, as I hear from Mr. Tegetmeier, certainly lay larger eggs than buff Cochins. The eggs, however, of the different breeds vary considerably in character; for instance, Mr. Ballance states 37 that his Malay “pullets of last year laid eggs equal in size to those of any duck, and other Malay hens, two or three years old, laid eggs very little larger than a good-sized Bantam's egg. Some were as white as a Spanish hen's egg, and others varied from a light cream-colour to a deep rich buff, or even to a brown." The shape also varies, the two ends being much more equally rounded in Cochins than in Games or Polish. Spanish fowls lay smoother eggs than Cochins, of which the eggs are generally granulated. The shell in this latter breed, and more especially in Malays, is apt to be thicker than in Games or Spanish ; but the Minorcas, a sub- 35 Ornamental and Domestic Poul- try, 1. 152. ever, figures and much information on eggs. See pp: 34 and 235 on the eggs of the Game fowl. 38 Ferguson on Rare Prize Poultry,' p. 297. This writer, I am informed, can- oot generally be trusted. He gives, how- 37 See · Poultry Book,' by Mr. Teget- meier, 1866, pp. 81 and 78. CHAP. VII. DIFFERENCES BETWEEN THE BREEDS. 301 breed of Spanish, are said to lay harder eggs than true Spanish.88 The colour differs considerably,--the Cochins laying buff-coloured eggs; the Malays a paler variable buff; and Games a still paler buff. It would appear that darker-coloured eggs characterise the breeds which have lately come from the East, or are still closely allied to those now living there. The colour of the yolk, according to Ferguson, as well as of the shell, differs slightly in the sub- breeds of the Game, and stands in some degree of correlation with the colour of the plumage. I am also informed by Mr. Brent that dark partridge-coloured Cochin hens lay darker coloured eggs than the other Cochin sub-breeds. The flavour and richness of the egg certainly differ in different breeds. The productiveness of the several breeds is very different. Spanish, Polish, and Hamburgh have lost the incubating instinct. Chickens. - As the young of almost all gallinaceous birds, even of the black curassow and black grouse, whilst covered with down, are longitudinally striped on the back, -of which character, when adult, neither sex retains a trace,-it might have been expected that the chickens of all our domestic fowls would have been simi- larly striped.38 This could, however, hardly have been expected, when the adult plumage in both sexes has undergone so great a change as to be wholly white or black. In white fowls of various breeds the chickens are uniformly yellowish white, passing in the black-boned Silk fowl into bright canary-yellow. This is also generally the case with the chickens of white Cochins, but I hear from Mr. Zurhost that they are sometimes of a buff or oak colour, and that all those of this latter colour, which were watched, turned out males. The chickens of buff Cochins are of a golden-yellow, easily distinguishable from the paler tint of the white Cochins, and are often longitudinally streaked with dark shades: the chickens of silver-cinnamon Cochins are almost always of a buff colour. The chickens of the white Game and white Dorking breeds, when held in particular lights, sometimes exhibit (on the authority of Mr. Brent) faint traces of longitudinal stripes. Fowls which are entirely black, namely Spanish, black Game, black Polish, and black Ban- tams, display a new character, for their chickens have their breasts and throats more or less white, with sometimes a little white else- 98 The Cottage Gardener,' Oct. 1855, p. 13. On the thinness of the eggs of Game-fowls, see Mowbray on Poultry, 7th edit., p. 13. 39 My information, which is very far from perfect, on chickens in the down, is derived chiefly from Mr. Dixon's 'Or- namental and Domestic Poultry.' Mr. B. P. Brent has also communicated to me many facts by letter, as has Mr. Tegetmeier. I will in each case mark my authority by the name within brackets. For the chickens of white Silk-fowls, see Tegetmeier's' Poultry Book,'1566, p. 221. 302 CHAP. VII. FOWLS. where. Spanish chickens also, occasionally (Brent), have, where the down was white, their first true feathers tipped for a time with white. The primordially striped character is retained by the chickens of most of the Game sub-breeds (Brent, Dixon); by Dork- ings; by the partridge and grouse-coloured sub-breeds of Cochins (Brent), but not, as we have seen, by all the other sub-breeds; by the pheasant-Malay (Dixon), but apparently not (at which I am much surprised) by other Malays. The following breeds and sub- breeds are barely, or not at all, longitudinally striped; viz. gold and silver pencilled Hamburghs, which can hardly be distinguished from each other (Brent) in the down, both having a few dark spots on the head and rump, with occasionally a longitudinal stripe (Dixon) on the back of the neck. I have seen only one chicken of the silver-spangled Hamburgh, and this was obscurely striped along the back. Gold-spangled Polish chickens (Tegetmeier) are of a warm russet brown; and silver-spangled Polish chickens are grey, sometimes (Dixon) with dashes of ochre on the head, wings, and breast. Cuckoo and blue-dun fowls (Dixon) are grey in the down. The chickens of Sebright Bantams (Dixon) are uniformly dark brown, whilst those of the brown-breasted red Game Bantam are black, with some white on the throat and breast. From these facts we see that the chickens of the different breeds, and even of the same main breed, differ much in their downy plumage; and, although longitudinal stripes characterise the young of all wild gallinaceous birds, they disappear in several domestic breeds. Perhaps it may be accepted as a general rule that the more the adult plumage differs from that of the adult G. bankiva, the more completely the chickens have lost their proper stripes. With respect to the period of life at which the charac- ters proper to each breed first appear, it is obvious that such structures as additional toes must be formed long before birth. In Polish fowls, the extraordinary protu- berance of the anterior part of the skull is well developed before the chickens come out of the egg;40 but the crest, which is supported on the protuberance, is at first feebly developed, nor does it attain its full size until the second year. The Spanish cock is pre-eminent for his magnifi- cent comb, and this is developed at an unusually early 40 As I hear from Mr. Tegetmeier ; see also Proc. Zoolog. Soc. 1856, p. 366. On the late development of the crest, seo "Poultry Chronicle,' vol. ii. p. 132. CHAP. VII. DIFFERENCES BETWEEN THE BREEDS. 303 age; so that the young males can be distinguished from the females when only a few weeks old, and therefore earlier than in other breeds; they likewise crow very early, namely, when about six weeks old. In the Dutch sub-breed of the Spanish fowl the white ear-lappets are developed earlier than in the common Spanish breed.41 Cochins are characterised by a small tail, and in the young cocks the tail is developed at an unusually late period. Game fowls are notorious for their pugnacity; and the young cocks crow, clap their little wings, and obstinately fight with each other, even whilst under their mother's care.43 “I have often had,” says one author, 44 “whole broods, scarcely feathered, stone-blind from fight- ing; the rival couples moping in corners, and renewing their battles on obtaining the first ray of light.” With the males of all gallinaceous birds the use of their weapons and pugnacity is to fight for the possession of the females; so that the tendency in our Game chickens to fight at an extremely early age is not only useless, but is injurious, as they suffer so much from their wounds. The training for battle during an early period may be natural to the wild Gallus bankiva ; but as man during many generations has gone on selecting the most obsti- nately pugnacious cocks, it is more probable that their pugnacity has been unnaturally increased, and unnatu- rally transferred to the young male chickens. In the same manner, it is probable that the extraordinary de- velopment of the comb in the Spanish cock has been unintentionally transferred to the young cocks; for fanciers would not care whether their young birds had large combs, but would select for breeding the adults which had the finest combs, whether or not developed at 43 Ferguson on Rare and Prize Poultry, p. 261. 41 On these points, see Poultry Chro- nicle,' vol. iii. p. 166; and Tegetmeier's "Poultry Book,' 1866, pp. 105 and 121. 42 Dixon, Ornamental and Domestic Poultry,' p. 273. 44 Mowbray on Poultry, 7th edit. 1834, p. 13. 304 CHAP. VII. FOWLS. an early period. The last point which need here be noticed is that, though the chickens of Spanish and Malay fowls are well covered with down, the true feathers are acquired at an unusually late age; so that for a time the young birds are partially naked, and are liable to suffer from cold. Secondary Sexual Characters.--The two sexes in the parent-form, the Gallus bankiva, differ much in colour. In our domestic breeds the difference is never greater, but is often less, and varies much in degree even in the sub- breeds of the same main breed. Thus in certain Game fowls the difference is as great as in the parent-form, whilst in the black and white sub-breeds there is no dif- ference in plumage. Mr. Brent informs me that he has seen two strains of black-breasted red Games, in which the cocks could not be distinguished, whilst the hens in one were partridge-brown and in the other fawn-brown. A similar case has been observed in the strains of the brown-breasted red Game. The hen of the 66 duck- winged Game" is “extremely beautiful," and differs much from the hens of all the other Game sub-breeds; but generally, as with the blue and grey Game and with some sub-varieties of the pile-game, a moderately close relation may be observed between the males and females in the variation of their plumage. A similar relation is also evident when we compare the several varieties of Cochins. In the two sexes of gold and silver-spangled and of buff Polish fowls, there is much general similarity in the colouring and marks of the whole plumage, ex- cepting of course in the hackles, crest, and beard. In spangled Hamburghs, there is likewise a considerable de- gree of similarity between the two sexes. In pencilled Hamburghs, on the other hand, there is much dissimilar- ity; the pencilling which is characteristic of the hens be- 45 See the full description of the varie- ties of the Game-breed, in Tegetmeier's Poultry Book,' 1866, p. 131. For Cuc- koo Dorkings, p. 97. CHAP. VII. 305 SEXUAL DIFFERENCES. ing almost absent in the males of both the golden and silver varieties. But, as we have already seen, it cannot be given as a general rule that male fowls never have pencilled feathers, for Cuckoo Dorkings are “remarkable from having nearly similar markings in both sexes." It is a singular fact that the males in certain sub-breeds have lost some of their secondary masculine characters, and, from their close resemblance in plumage to the fe- males, are often called hennies. There is much diversity of opinion whether these males are in any degree sterile; that they sometimes are partially sterile seems clear, 46 but this may have been caused by too close interbreeding. That they are not quite sterile, and that the whole case is widely different from that of old females assuming masculine characters, is evident from several of these hen- like sub-breeds having been long propagated. The males and females of gold and silver-laced Sebright Bantams can be barely distinguished from each other, except by their combs, wattles, and spurs, for they are coloured alike, and the males have not hackles, nor the flowiug sickle-like tail-feathers. A hen-tailed sub-breed of Ham- burghs was recently much esteemed. There is also a breed of Game-fowls, in which the males and females re- semble each other so closely that the cocks have often mistaken their hen-feathered opponents in the cock-pit for real hens, and by the mistake have lost their lives. 47 The cocks, though dressed in the feathers of the hen, “ are high-spirited birds, and their courage has been often proved :” an engraving even has been published of one celebrated hen-tailed victor. Mr. Tegetmeier Mr. Tegetmeier 18 has re- corded the remarkable case of a brown-breasted red Game-cock which, after assuming its perfect masculine 46 Mr. Hewitt in Tegetmeier's 'Poultry Bouk,' 186, pp. 246 and 156. For hen- tailed game-cocks, see p. 131. 47 The Field,' April 20th, 1861. The writer says he has seen half-a-dozen cocks thus sacrificed. 48 Proceedings of Zoolog. Soc.' March, 1861, p. 102. The engraving of the hen- tailed cock just alluded to was exhibited at the Society. 306 CHAP. VII. FOWLS. plumage, became hen-feathered in the autumn of the fol- lowing year; but he did not lose voice, spurs, strength, nor productiveness. This bird has now retained the same character during five seasons, and has begot both hen- 'feathered and male-feathered offspring. Mr. Grantley F. Berkeley relates the still more singular case of a cele- brated strain of “polecat Game-fowls," which produced in nearly every brood a single hen-cock. “ The great peculiarity in one of these birds was that he, as the sea- sons succeeded each other, was not always a hen-cock, and not always of the colour called the polecat, which is black. From the polecat and hen-cock feather in one season he moulted to a full male-plumaged black-breasted red, and in the following year he returned to the former feather." 49 I have remarked in my Origin of Species' that sec- ondary sexual characters are apt to differ much in the species of the same genus, and to be unusually variable in the individuals of the species. So it is with the breeds of the fowl, as we have already seen, as far as the colour of plumage is concerned, and so it is with the other secondary sexual characters. Firstly, the comb differs much in the various breeds, and its form is eminently characteristic of each kind, with the exception of the Dorkings, in which the form has not been as yet deter- mined on by fanciers, and fixed by selection. A single, deeply-serrated comb is the typical and most common form. It differs much in size, being immensely develop- ed in Spanish fowls; and in a local breed called Red- caps, it is sometimes "upwards of threc inches in breadth at the front, and more than four inches in length, meas- ured to the end of the peak behind.” 51 In some breeds the comb is double, and when the two ends are cemented 49 The Field,' April 20th, 1861. 50 I am much indebted to Mr. Brent for an account, with sketches, of all the variations of the comb known to him, and likewise with respect to the tail, as presently to be given. 51 The Poultry Book,' by Tegetmeier, 1866, p. 231. CHAP. VII. 307 SEXUAL DIFFERENCES. together it forms a “cup-comb;' in the “rose-comb” it is depressed, covered with small projections, and pro- duced backwards; in the horned and crève-cœur fowl it is produced into two horns; it is triple in the pea-combed Brahmas, short and truncated in the Malays, and absent in the Guelderlands. In the tasselled Game a few long feathers arise from the back of the comb; in many breeds a crest of feathers replaces the comb. The crest, when little developed, arises from a fleshy mass, but, when much developed, from a hemispherical protuberance of the skull. In the best Polish fowls it is so largely de- veloped, that I have seen birds which could hardly pick up their food; and a German writer asserts that they are in consequence liable to be struck by hawks. Mon- strous structures of this kind would thus be suppressed in a state of nature. The wattles, also, vary much in size, being small in Malays and some other breeds; they are replaced in certain Polish sub-breeds by a great tuft of feathers called a beard. The hackles do not differ much in the various breeds, but are short and stiff in Malays, and absent in Hennies. As in some orders of birds the males display extraordi- narily-shaped feathers, such as naked shafts with discs at the end, &c., the following case may be worth giving. In the wild Gallus bankiva and in our domestic fowls, the barbs which arise from each side of the extremities of the hackles are naked or not clothed with barbules, so that they resemble bristles; but Mr. Brent sent me some scapular hackles from a young Birchen Duckwing Game cock, in which the naked barbs became densely reclothed with barbules towards their tips; so that these tips, which were dark coloured with a metallic lustre, were separated from the lower parts by a symmetrically-shaped transparent zone formed of the naked portions of the 62 Die Hühner und Pfauenzucht, 1827, s. 11. 308 CHAP. VII. FOWLS. barbs. Hence the coloured tips appeared like little sepa- rate metallic discs. The sickle-feathers in the tail, of which there are three pair, and which are eminently characteristic of the male sex, differ much in the various breeds. They are scimitar- shaped in some Hamburghs, instead of being long and flow- ing as in the typical breeds. They are extremely short in Cochins, and are not at all developed in Hennies. They are carried, together with the whole tail, erect in Dork- ings and Games; but droop much in Malays and in some Cochins. Sultans are characterized by an additional num. ber of lateral sickle-feathers. The spurs vary much, being placed higher or lower on the shank; being extremely long and sharp in Games, and blunt and short in Cochins. These latter birds seem aware that their spurs are not efficient weapons; for though they occasionally use them, they more frequently fight, as I am informed by Mr. Tegetmeier, by seizing and shaking each other with their beaks. In some Indian Game-cocks, received by Mr. Brent from Germany, there are, as he informs me, three, four, or even five spurs on each leg. Some Dorkings also have two spurs on each leg; 5% and in birds of this breed the spur is often placed almost on the outside of the leg. Double spurs are mentioned in the ancient Chinese Ency- clopædia. Their occurrence may be considered as a case of analogous variation, for some wild gallinaceous birds, for instance, the Polyplectron, have double spurs. Judging from the differences which generally distin- guish the sexes in the Gallinaceæ, certain characters in our domestic fowls appear to have been transferred from the one sex to the other. In all the species (except in Turnix), when there is any conspicuous difference in plu- mage between the male and female, the male is always 53 Poultry Chronicle,' vol. i. p. 595. Mr. Brent has informed me of the same fact. With respect to the position of the spurs in Dorkings, see Cottage Gardener,' Sept. 18th, 1860, p. 350. CHAP. VII, 309 SEXUAL DIFFERENCES. the most beautiful; but in golden-spangled Hamburghs the hen is equally beautiful with the cock, and incompa- rably more beautiful than the hen in any natural species of Gallus; so that here a masculine character has been transferred to the female. On the other hand, in cuckoo Dorkings and in other cuckoo breeds the pencilling, which in Gallus is a female attribute, has been transferred to the male: nor, on the principle of analogous variation, is this transference surprising, as the males in many galli- naceous genera are barred or pencilled. With most of these birds head ornaments of all kinds are more fully developed in the male than in the female ; but in Polish fowls the crest or top-knot, which in the male replaces the comb, is equally developed in both sexes. In certain sub-breeds, which from the hen having a small crest, are called lark-crested," a single upright comb sometimes al- most entirely takes the place of the crest in the male.” 54 From this latter case, and from some facts presently to be given with respect to the protuberance of the skull in Polish fowls, the crest in this breed ought perhaps to be viewed as a feminine character which has been transferred to the male. In the Spanish breed the male, as we know, has an immense comb, and this has been partially transfer- red to the female, for her comb is unusually large, though not upright. In Game-fowls the bold and savage disposi- tion of the male has likewise been largely transferred to the female; 65 and she sometimes even possesses the eminently masculine character of spurs. Many cases are on record of hens being furnished with spurs; and in Germany, ac- cording to Bechstein, the spurs in the Silk-hen are some- times very long. He mentions also another breed simi- larly characterized, in which the hens are excellent.layers, 64 Dixon, Ornamental and Domestic Poultry,' p. 320. 65 Mr. Tegetmeier informs me that Game hens have been found so com- bative, that it is now generally the prac- tice to exhibit each ben in a separate pen. 56 "Naturgeschichte Deutschlands, Band iii. (1793), s. 339, 407. 310 CHAP. VII. FOWLS. but are apt to disturb and break their eggs owing to their spurs. Mr. Layard 67 has given an account of a breed of fowls in Ceylon with black skin, bones, and wattle, but with ordinary feathers, and which cannot be more aptly de- scribed than by comparing them to a white fowl drawn down a sooty chimney; it is, however," adds Mr. Layard, "a remarkable fact that a male bird of the pure sooty variety is almost as rare as a tortoise-shell tom-cat.” Mr. Blyth finds that the same rule holds good with this breed near Calcutta. The males and females, on the other hand, of the black-boned European breed, with silky feathers, do not differ from each other; so that in the one breed black skin and bones, and the same kind of plumage, are common to both sexes, whilst in the other breed these characters are confined to the female sex. At the present day all the breeds of Polish fowls have the great bony protuberance on their skulls, which in- cludes part of the brain and supports the crest, equally developed in both sexes. But formerly in Germany the skull of the hen alone was protuberant: Blumenbach, who particularly attended to abnormal peculiarities in domestic animals, states, in 1813, that this was the case; and Bechstein had previously, in 1793, observed the same fact. This latter author has carefully described the effects of a crest on the skull not only in fowls, but in ducks, geese, and canaries. He states that with fowls, when the crest is not much developed, it is supported on a fatty mass; but when much developed, it is always supported 57 On the Ornithology of Ceylon in Annals and Mag. of Nat. History,' 2nd series, vol. xiv. (1854), p. 63. 58 I quote Blumenbach on the autho- rity of Mr. Tegetmeier, who gives in Proc. Zoolog. Soc.,' Nov. 25th, 1856, a very interesting account of the skets of Polish fowls. Mr. Tegetmeier, knowing of Bechstein's account, dis- puted the accuracy of Blumenbach's statement. For Bechstein, see Natur- geschichte Deutschlands, Band ii. (1793), s. 399, note. I may add that at the first exhibition of poultry at the Zoological Gardens, in May, 1845, I saw some fowls, called Friezland fowls, of which the hens were crested, and the cocks were furnished with a comb. CHAP. VII. 311 EXTERNAL DIFFERENCES. on a bony protuberance of variable size. He well de- scribes the peculiarities of this protuberance, and he at- tended to the effects of the modified shape of the brain on the intellect of these birds, and disputes Pallas' statement that they are stupid. He then expressly states that he never observed this protuberance in male fowls. Hence there can be no doubt that this remarkable character in the skulls of Polish fowls was formerly in Germany con- fined to the female sex, but has now been transferred to the males, and has thus become common to both sexes. External Differences, not connected with the sexes, between the breeds and between individual birds. The size of the body differs greatly. Mr. Tegetmeier has known a Brahma to weigh 17 pounds; a fine Malay cock 10 pounds; whilst a first-rate Sebright Bantam weighs hardly more than 1 pound. During the last 20 years the size of some of our breeds has been largely increased by methodical selection, whilst that of other breeds has been much diminished. We have already seen how greatly colour varies even within the same breed; we know that the wild G. bankiva varies slightly in colour ; we know that colour is varia- ble in all our domestic animals; nevertheless some eminent fanciers have so little faith in variability, that they have actually argued that the chief Game sub-breeds, which differ from each other in nothing but colour, are descended from distinct wild species! Cross- ing often causes strange modifications of colour. Mr. Tegetmeier informs me that when buff and white Cochins are crossed, some of the chickens are almost invariably black. According to Mr. Brent, black and white Cochins occasionally produce chickens of a slaty- blue tint; and this same tint appears, as Mr. Tegetmeier tells me, from crossing white Cochins with black Spanish fowls, or white Dorkings with black Minorcas.59 A good observer 60 states that a first-rate silver-spangled Hamburgh hen gradually lost the mast characteristic qualities of the breed, for the black lacing to her feath- ers disappeared, and her legs changed from leaden-blue to white; but what makes the case remarkable is, that this tendency ran in the blood, for her sister changed in a similar but less strongly 59 Cottage Gardener,' Jan. 3rd, 1860, fore the Dublin Nat. Hist. Soc., quoted in Cottage Gardener,' 1856, p. 161. p. 218. 60 Mr. Williams, in a paper read be- 312 CHAP. VII. FOWLS. marked manner; and chickens produced from this latter hen were at first almost pure white, “but on moulting acquired black collars and some spangled feathers with almost obliterated markings;" so that a new variety arose in this singular manner. The skin in the different breeds differs much in colour, being white in common kinds, yellow in Malays and Cochins, and black in Silk fowls; thus mock- ing, as M. Godron 61 remarks, the three principal types of skin in mankind. The same author adds, that, as different kinds of fowls living in distant and isolated parts of the world have black skin and bones, this colour must have appeared at various times and places. The shape and carriage of the body and the shape of the head dif fer much. The beak varies slightly in length and curvature, but in comparably less than with pigeons. In most crested fowls the nos- trils offer a remarkable peculiarity in being raised with a crescentic outline. The primary wing-feathers are short in Cochins; in a male, which must have been more than twice as heavy as G. bankiva, these feathers were in both birds of the same length. I have count: ed, with Mr. Tegetmeier's aid, the primary wing-feathers in thirteen cocks and hens of various breeds; in four of them, namely in two Hamburghs, a Cochin, and Game Bantam, there were 10, instead of the normal number 9; but in counting these feathers I have followed the practice of fanciers, and have not included the first minute pri mary feather, barely three-quarters of an inch in length. These feathers differ considerably in relative length, the fourth, or the fifth, or the sixth, being the longest ; with the third either equal to, or considerably shorter than the fifth. In wild gallinaceous species the relative length and number of the main wing and tail-feathers are extremely constant. The tail differs much in erectness and size, being small in Malays and very small in Cochins. In thirteen fowls of various breeds which I have examined, five had the normal number of 14 feath. ers, including in this number the two middle sickle-feathers; six others (viz. a Caffre cock, Gold-spangled Polish cock, Cochin hen, Sultan hen, Game hen, and Malay hen) had 16; and two (an old Cochin cock and Malay hen) had 17 feathers. The rumpless fowl has no tail, and in a bird which I kept alive the oil-gland had abort- ed; but this bird, though the.os coccygis was extremely imperfect, had a vestige of a tail with two rather long feathers in the position of the outer caudals. This bird came from a family where, as I was 81 De l'Espèce,' 1859, 442. For the occurrence of black-boned fowls in South America, see Roulin, in Mém. de l'Acad. des Sciences,' tom. vi. p. 351; and Azara, 'Quadrupèdes du Paraguay,' tom. ii. p. 324. A frizzled fowl sent to me from Madras had black bones. CHAP. VII. 313 EXTERNAL DIFFERENCES. told, the breed had kept true for twenty years; but rumpless fowls often produce chickens with tails.62 An eminent physiologist has recently spoken of this breed as a distinct species; had he examined the deformed state of the os coccyx he would never have come to this conclusion; he was probably misled by the statement, which may be found in some works, that tailless fowls are wild in Ceylon; but this statement, as I have been assured by Mr. Layard and Dr. Kellaert, who have so closely studied the birds of Ceylon, is utterly false. The tarsi vary considerably in length, being relatively to the femur considerably longer in the Spanish and Frizzled, and shorter in the Silk and Bantam breeds, than in the wild G. bankiva; but in the latter, as we have seen, the tarsi vary in length. The tarsi are often feathered. The feet in many breeds are furnished with additional toes. Golden-spangled Polish fowls are said 64 to have the skin between their toes much developed ; Mr. Tegetmeier observed this in one bird, but it was not so in one which I exam- ined. In Cochins the middle toe is said 65 to be nearly double the length of the lateral toes, and therefore much longer than in G. bankiva or in other fowls; but this was not the case in two which I examined. The nail of the middle toe in this same breed is sur- prisingly broad and flat, but in a variable degree in two birds which I examined; of this structure in the nail there is only a trace in G. bankiva. The voice differs slightly, as I am informed by Mr. Dixon, in almost every breed. The Malays 66 have a loud, deep, somewhat prolonged crow, but with considerable individual differences. Col- onel Sykes remarks that the domestic Kulm cock in India has not the shrill clear pipe of the English bird, and "his scale of notes appears more limited.” Dr. Hooker was struck with the "pro- longed howling screech" of the cocks in Sikhim.67 The crow of the Cochin is notoriously and ludicrously different from that of the common cock. The disposition of the different breeds is widely different, varying from the savage and defiant temper of the Game- cock to the extremely peaceable temper of the Cochin. The latter, it has been asserted, "graze to a much greater extent than any 62 Mr. Hewitt, in Tegetmeier's Poul- try Book,' 1866, p. 231. 63 Dr. Broca, in Brown-Sequard's Journal de Phys.,' tom. ii. p. 361. 64 Dixon's Ornamental Poultry,' p. 325. 65 Poultry Chronicle,' vol. i. p. 485. Tegetmeier's Poultry Book, 1966, p. 41. On Cochins grazing, idem, p. 46. 66 Ferguson on 'Prize Poultry,' p. 187. 67 Col. Sykes in Proc. Zoolog. Soc.,' 1832, p. 151. Dr. Hooker's Himalayan Journals,' vol. i. p. 314. 14 314 CHAP. VII, FOWLS. other varieties.” The Spanish fowls suffer more from frost than other breeds. Before we pass on to the skeleton, the degree of dis- tinctness of the several breeds from G. bankiva ought to be noticed. Some writers speak of the Spanish as one of the most distinct breeds, and so it is in general aspect; but its characteristic differences are not important. The Malay appears to me more distinct, from its tall stature, small drooping tail with more than fourteen tail-feathers, and from its small comb and wattles; nevertheless one Malay sub-breed is coloured almost exactly like G. ban- kiva. Some authors consider the Polish fowl as very distinct; but this is a semi-monstrous breed, as shown by the protuberant and irregularly perforated skull. The Cochin, with its deeply furrowed frontal bones, peculiarly shaped occipital foramen, short wing-feathers, short tail containing more than fourteen feathers, broad nail to the middle toe, fluffy plumage, rough and dark- coloured eggs, and especially from its peculiar voice, is probably the most distinct of all the breeds. If any one of our breeds has descended from some unknown species, distinct from G. bankiva, it is probably the Cochin; but the balance of evidence does not favour this view. All the characteristic differences of the Cochin breed are more or less variable, and may be detected in a greater or lesser degree in other breeds. One sub-breed is col- oured closely like G. bankiva. The feathered legs, often furnished with an additional toe, the wings incapable of flight, the extremely quiet disposition, indicate a long course of domestication; and these fowls come from China, where we know that plants and animals have been tended from a remote period with extraordinary care, and where consequently we might expect to find profoundly modified domestic races. Osteological Differences. I have examined twenty- seven skeletons and fifty-three skulls of various breeds, including three of G. bankiva: nearly half of these CHAP. VII. 315 OSTEOLOGICAL DIFFERENCES. skulls I owe to the kindness of Mr. Tegetmeier, and three of the skeletons to Mr. Eyton. The Skull differs greatly in size in different breeds, being nearly twice as long in the largest Cochins, but not nearly twice as broad, as in Bantams. The bones at the base, from the occipital foramen to the anterior end (including the quadrates and pterygoids), are absolutely identical in shape in all the skulls. So is the lower jaw. In the forehead slight differences are often perceptible between the males and females, evidently caused by the presence of the comb. In every case I take the skull of G. banjoiva as the standard of com- parison. In four Games, in one Malay hen, in an African cock, in a Frizzled cock from Madras, in two black-boned Silk hens, no differences occur worth notice. In three Spanish cocks, the form of the forehead between the orbits differs considerably; in one it is considerably depressed, whilst in the two others it is rather prominent, with a deep medial furrow; the skull of the hen is smooth. In three skulls of Sebright Bantams the crown is more globular, and slopes more abruptly to the occiput, than in G. ban- kiva. In a Bantam or Jumper from Burmah these same characters are more strongly pronounced, and the supra-occiput is more point- ed. In a black Bantam the skull is not so globular, and the occipital foramen is very large, and has nearly the same sub-triangular out- line presently to be described in Cochins; and in this skull the two ascending branches of the premaxillary are overlapped in a singu- lar manner by the processes of the nasal bone, but, as I have seen only one specimen, some of these differences may be individual. Of Cochins and Brahmas (the latter a crossed race approaching closely to Cochins) I have examined seven skulls; at the point where the ascending branches of the premaxillary rest on the frontal bone the surface is much depressed, and from this depression a deep medial furrow extends backwards to a variable distance; the edges of this fissure are rather prominent, as is the top of the skull behind and over the orbits. These characters are less de- veloped in the hens. The pterygoids, and the processes of the lower jaw, relatively to the size of the head, are broader than in G. bankiva, and this is likewise the case with Dorkings when of large size. The terminal fork of the hyoid bone in Cochins is twice as wide as in G. bankiva, whereas the length of the other hyoid bones is only as three to two. But the most remarkable character is the shape of the occipital foramen: in G. bankiva (A) the breadth in a horizontal line exceeds the height in a vertical line, and the outline is nearly circular; whereas in Cochins (B) the outline is sub-triangular, and the vertical line exceeds the hori- 316 CHAP. VII. FOWLS. zontal line in length. This same form likewise occurs in the black Bantam above referred to, and an approach to it may be seen in some Dorkings, and in a slight degree in certain other breeds. B A Fig. 33.-Occipital Foramen, of natural size. A. Wild Gallus bankiva. B. Cochin Cock. Of Dorkings I have examined three skulls, one belonging to the white sub-breed; the one character deserving notice is the breadth of the frontal bones, which are moderately furrowed in the middle; thus in a skull which was less than once and a half the length of B CUS A Fig. 34.-Skulls of natural size, viewed from above, a little obliquely. A. Wild Gallus bankiva. B. White-crested Polish Cock. CHAP. VII. 317 OSTEOLOGICAL DIFFERENCES. that of G. bankiva, the breadth between the orbits was exactly double. Of Hamburghs I have examined four skulls (male and fe- male) of the pencilled sub-breed, and one (male) of the spangled sub-breed ; the nasal bones stand remarkably wide apart, but in a variable degree; consequently narrow membrane-covered spaces are left between the tips of the two ascending branches of the premaxil- lary bones, which are rather short, and between these branches and the nasal bones. The surface of the frontal bone, on which the branches of the premaxillary rest, is very little depressed. These peculiarities no doubt stand in close relation with the broad flat- tened rose-comb characteristic of the Hamburgh breed. I have examined fourteen skulls of Polish and other crested breeds. Their differences are extraordinary. First for nine skulls of differ- ent sub-breeds of English Polish fowls. The hemispherical protu- berance of the frontal bones 68 may be seen in the accompanying drawings, in which (B) the skull of a white-crested Polish fowl is shown obliquely from above, with the skull (A) of G. bankiva in the same position. In fig. 35 longitudinal sections are given of the skulls of a Polish fowl, and, for comparison, of a Cochin of the same size. The protuberance in all Polish fowls occupies the same posi- tion, but differs much in size. In one of my nine specimens it was extremely slight. The degree to which the protuberance is ossified varies greatly, larger or smaller portions of bone being replaced by membrane. In one specimen there was only a single open pore; generally, there are many variously-shaped open spaces, the bone forming an irregular reticulation. A medial, longitudinal, arched ribbon of bone is generally retained, but in one specimen there was no bone whatever over the whole protuberance, and the skull when cleaned and viewed from above presented the appearance of an open basin. The change in the whole internal form of the skull is sur- prisingly great. The brain is modified in a corresponding manner, as is shown in the two longitudinal sections, which deserve atten- tive consideration. The upper and anterior cavity of the three into which the skull may be divided, is the one which is so greatly modified; it is evidently much larger than in the Cochin skull of the same size, and extends much further beyond the interorbital septum, but laterally is less deep. Whether this cavity is entirely filled by the brain, may be doubted. In the skull of the Cochin 68 See Mr. Tegetmeier's account, with woodcuts, of the skull of Polish fowls, in Proc. Zoolog. Soc.,' Nov. 25th, 1856. For other references, see Isid. Geoffroy Saint Hilaire, Hist. Gén. des Anomalies,' tom. i. p. 237. M. C. Dareste suspects (Re- cherches sur les Conditions de la Vie, &c., Lille, 1863, p. 36) that the protube- rance is not formed by the frontal bones, but by the ossification of the dura mater. 318 CHAP. VII. FOWLS. and of all ordinary fowls a strong internal ridge of bone separates the anterior from the central cavity; but this ridge is entirely ab- sent in the Polish skull here figured. The shape of the central cavity is circular in the Polish, and lengthened in the Cochin skull. А B Fig. 35.–Longitudinal sections of Skull, of natural size, viewed laterally. A. Polish Cock. B. Cochin Cock, selected for comparison with the above from being of nearly the same size. The shape of the posterior cavity, together with the position, size, and number of the pores for the nerves, differ much in these two skulls. A pit deeply penetrating the occipital bone of the Cochin is entirely absent in this Polish skull, whilst in another specimen it was well developed. In this second specimen the whole internal surface of the posterior cavity likewise differs to a certain extent in shape. I made sections of two other skulls,-namely, of a Polish fowl with the protuberance singularly little developed, and of a Sultan in which it was a little more developed ; and when these two skulls were placed between the two above figured (fig. 35), a perfect gradation in the configuration of each part of the internal surface could be traced. In the Polish skull, with a small protu- berance, the ridge between the anterior and middle cavities was CHAP. VII. 319 OSTEOLOGICAL DIFFERENCES. present, but low; and in the Sultan this ridge was replaced by a narrow furrow standing on a broad raised eminence. It may naturally be asked whether these remarkable modifica- tions in the form of the brain affect the intellect of Polish fowls; some writers have stated that they are extremely stupid, but Bech- stein and Mr. Tegetmeier have shown that this is by no means generally the case. Nevertheless Bechstein 69 states that he had a Polish hen which "was crazy, and anxiously wandered about all day long." A hen in my possession was solitary in her habits, and was often so absorbed in reverie that she could be touched ; she was also deficient in the most singular manner in the faculty of finding her way, so that, if she strayed a hundred yards from her feeding-place, she was completely lost, and would then obstinately try to proceed in a wrong direction. I have received other and similar accounts of Polish fowls appearing stupid or half-idiotic.ro To return to the skull. The posterior part, viewed externally, differs little from that of G. bankiva. In most fowls the posterior- lateral process of the frontal bone and the process of the squamosal bone run together and are ossified near their extremities: this union of the two bones, however, is not constant in any breed ; and in eleven out of fourteen skulls of crested breeds, these pro- cesses were quite distinct. These processes, when not united, instead of being inclined anteriorly as in all common breeds, descend at right angles to the lower jaw; and in this case the longer axis of the bony cavity of the ear is likewise more perpen- dicular than in other breeds. When the squamosal process is free, instead of expanding at the tip, it is reduced to an extremely fine and pointed style, of variable length. The pterygoid and quadrate bones present no difference. The palatine bones are a little more curved upwards at their posterior ends. The frontal bones, an- teriorly to the protuberance, are, as in Dorkings, very broad, but in a variable degree. The nasal bones either stand far apart, as in Hamburghs, or almost touch each other, and in one instance were ossified together. Each nasal bone properly sends out in front two long processes of equal lengths, forming a fork; but in all the Polish skulls, except one, the inner process was considerably, but in a variable degree, shortened and somewhat upturned. In all the skulls, except one, the two ascending branches of the premaxillary, instead of running up between the processes of the nasal bones and resting on the ethmoid bone, are much shortened and terminate 69 Naturgeschichte Deutschlands, have received communications to a si- Band iii. (1793), s. 400. milar effect from Messrs. Brent and 70 The Field,' May 11th, 1861. I Tegetmeier. 320 CHAP. VII. FOWLS. in a blunt, somewhat upturned point. In those skulls in which the nasal bones approach quite close to each other or are ossified together, it would be impossible for the ascending branches of the premaxillary to reach the ethmoid and frontal bones; hence we see that even the relative connection of the bones has been changed. Apparently in consequence of the branches of the premaxillary and of the inner processes of the nasal bones being somewhat upturned, the external orifices of the nostrils are upraised and assume a cre- scentic outline. Fig. 36.-Skull of Horned Fowl, of natural size, viewed from above, a little obliquely. (In the possession of Mr. Tegetmeier.) I must still say a few words on some of the foreign Crested breeds. The skull of a crested, rumpless, white Turkish fowl is very slightly protuberant, and but little perforated; the ascending branches of the premaxillary are well developed. In another Tur- kish breed, called Ghoondooks, the skull is considerably protuberant and perforated; the ascending branches of the premaxillary are so much aborted that they project only isth of an inch; and the inner processes of the nasal bone are so completely aborted, that the sur- face where they should have projected is quite smooth. Here then we see these two bones modified to an extreme degree. Of Sultans (another Turkish breed) I examined two skulls; in that of the female the protuberance was much larger than in the male. In both skulls the ascending branches of the premaxillary were very short, and in both the basal portion of the inner processes of the nasal bones were ossified together. These Sultan skulls differed from those of English Polish fowls in the frontal bones, anteriorly to the protuberance, not being broad. The last skull which I need describe is a unique one, lent to me CHAP. VII. 321 OSTEOLOGICAL DIFFERENCES. A series may by Mr. Tegetmeier: it resembles a Polish skull in most of its cha- racters, but has not the great frontal protuberance; it has, however, two rounded knobs of a different nature, which stand more in front, above the lachrymal bones. These curious knobs, into which the brain does not enter, are separated from each other by a deep me- dial furrow; and this is perforated by a few minute pores. The nasal bones stand rather wide apart, with their inner processes, and the ascending branches of the premaxillary, upturned and shortened. The two knobs no doubt supported the two great horn-like pro- jections of the comb. From the foregoing facts we see in how astonishing a manner some of the bones of the skull vary in Crested fowls. The protube- rance may certainly be called in one sense a monstrosity, as being wholly unlike anything observed in nature : but as in ordinary cases it is not injurious to the bird, and as it is strictly inherited, it can hardly in another sense be called a monstrosity. be formed commencing with the black-boned Silk fowl, which has a very small crest with the skull beneath penetrated only by a few minute orifices, but with no other change in its structure, and from this first stage we may proceed to fowls with a moderately large crest, which rests, according to Bechstein, on a fleshy mass, but without any protuberance in the skull. I may add that I have seen a similar fleshy or fibrous mass beneath the tuft of feathers on the head of the Tufted duck; and in this case there was no actual pro- tuberance in the skull, but it had become a little more globular. Lastly, when we come to fowls with a largely developed crest, the skull becomes largely protuberant and is perforated by a multitude of irregular open spaces. The close relation between the crest and the size of the bony protuberance is shown in another way; for Mr. Tegetmeier informs me that if chickens lately hatched be select- ed with a large bony protuberance, when adult they will have a large crest. There can be no doubt that in former times the breed- er of Polish fowls attended solely to the crest, and not to the skull; nevertheless, by increasing the crest, in which he has wonderfully succeeded, he has unintentionally made the skull protuberant to an astonishing degree; and through correlation of growth, he has at the same time affected the form and relative connexion of the pre- maxillary and nasal bones, the shape of the orifice of the nose, the breadth of the frontal bones, the shape of the post-lateral processes of the frontal and squamosal bones, the direction of the axis of the bony cavity of the ear, and lastly the internal configuration of the whole skull together with the shape of the brain. Vertebræ.-In G. bankiva there are fourteen cervical, seven dorsal with ribs, apparently fifteen lumbar and sacral, and six caudal ver- 14* 322 CHAP. VII. FOWLS. tebræ ; 71 but the lumbar and sacral are so much anchylosed that I am not sure of their number, and this makes the comparison of the total number of vertebræ in the several breeds difficult. I have spoken of six caudal vertebre, because the basal one is almost com- pletely anchylosed with the pelvis; but if we consider the number as seven, the caudal vertebræ agree in all the skeletons. The cer- vical vertebræ are, as just stated, in appearance fourteen; but out of twenty-three skeletons in a fit state for examination, in five of them, namely, in two Games, in two pencilled Hamburghs, and in a Polish, the fourteenth vertebra bore ribs, which, though small were perfectly developed with a double articulation. The presence of these little ribs cannot be considered as a fact of much impor- tance, for all the cervical vertebræ bear representatives of ribs; but their development in the fourteenth vertebra reduces the size of the passages in the transverse processes, and makes this vertebra exactly like the first dorsal vertebra. The addition of these little ribs does not affect the fourteenth cervical alone, for properly the ribs of the first true dorsal vertebra are destitute of processes; but in some of the skeletons in which the fourteenth cervical bore little ribs, the first pair of true ribs had well-developed processes. When we know that the sparrow has only nine, and the swan twenty-three cervical vertebræ,72 we need feel no surprise at the number of the cervical vertebræ in the fowl being, as it appears, variable. There are seven dorsal vertebræ bearing ribs; the first dorsal is never anchylosed with the succeeding four, which are generally anchylosed together. In one Sultan fowl, however, the two first dorsal vertebræ were free. In two skeletons, the fifth dorsal was free; generally the sixth is free (as in G. bankiva), but sometimes only at its posterior end, where in contact with the seventh. The seventh dorsal vertebra, in every case excepting in one Spanish cock, was anchylosed with the lumbar vertebræ. So that the degree to which these middle dorsal vertebræ are anchylosed together is variable. Seven is the normal number of true ribs, but in two skeletons of the Sultan fowl (in which the fourteenth cervical vertebra was not furnished with little ribs) there were eight pairs; the eighth pair seemed to be developed on a vertebra corresponding with the first lum- bar in G.bankiva-, the sternal portion of both the seventh and eighth ribs did not reach the sternum. In four skeletons in which ribs 71 It appears that I have not correctly designated the several groups of verte- bræ, for a great authority, Mr. W. K. Parker (Transact. Zoolog. Soc.,' vol. v. p. 198), specifies 16 cervical, 4 dorsal, 15 lumbar, and 6 caudal vertebræ in this genus. But I have used the same terms in all the following descriptions. 72 Macgillivray, 'British Birds,' vol. i. p. 25. CHAP. VII. 323 OSTEOLOGICAL DIFFERENCES. were developed on the fourteenth cervical vertebra, there were, when these cervical ribs are included, eight pairs; but in one Game-cock, in which the fourteenth cervical was furnished with ribs, there were only six pairs of true dorsal ribs; the sixth pair in this case did not have processes, and thus resembled the seventh pair in other skele- tons; in this game-cock, as far as could be judged from the appear- ance of the lumbar vertebræ, a whole dorsal vertebra with its ribs was missing. We thus see that the ribs (whether or not the little pair attached to the fourteenth cervical vertebra be counted) vary from six to eight pair. The sixth pair is frequently not furnished with processes. The sternal portion of the seventh pair is extreme- ly broad in Cochins, and is completely ossified. As previously stated, it is scarcely possible to count the lumbo-sacral vertebræ ; but they certainly do not correspond in shape or number in the several skele- tons. The caudal vertebræ are closely similar in all the skeletons, the only difference being, whether or not the basal one is anchylosed to the pelvis; they hardly vary even in length, not being shorter in Cochins, with their short tail-feathers, than in other breeds; in a Spanish cock, however, the caudal vertebræ were a little elongated. In three rumpless fowls the caudal vertebræ were few in number, and anchylosed together into a misformed mass. In the individual vertebræ the differences in structure are very slight. In the atlas the cavity for the oc- cipital condyle is either ossified into a ring, or is, as in Bankiva, open on its upper B margin. The upper arc of the spinal ca- nal is a little more arched in Cochins, in conformity with the shape of occipital foramen, than in G. bankiva. In several skeletons a difference, but not of much А importance, may be observed, which com- mences at the fourth cervical vertebra, and is greatest at about the sixth, seventh, Fig. 87.—Sixth Cervical Ver- tebra, of natural size, viewed or eighth vertebra; this consists in the laterally. A. Wild Gallus hæmal descending processes being united vankiva. B. Cochin Cock. to the body of the vertebra by a sort of buttress. This structure may be observed in Cochins, Polish, some Hamburghs, and probably other breeds; but is absent, or barely developed, in Game, Dorking, Spanish, Bantam, and several other breeds examined by me. On the dorsal surface of the sixth cervical vertebra in Cochins three prominent points are more strongly de- veloped than in the corresponding vertebra of the Game-fowl or G. bankciva. Pelvis.-- This differs in some few points in the several skeletons. 324 CHAP. VII. - FOWLS. A The anterior margin of the ilium seems at first to vary much in outline, but this is chiefly due to the degree to which the margin in the middle part is ossified to the crest of the spine; the outline, however, does differ in being more truncated in Bantams, and more rounded in certain breeds, as in Cochins. The outline of the ischi- adic foramen differs considerably, being nearly circular in Bantams, instead of egg-shaped as in the Bankiva, and more regularly oval in some skeletons, as in the Spanish. The obturator notch is also much less elongated in some skeletons than in others. The end of the pubic bone presents the greatest difference; being hardly enlarged in the Bankiva; considerably and gradually enlarged in Cochins, and in a lesser degree in some other breeds; and abruptly enlarged in Bantams. In one Bantam this bone extended very little beyond the extremity of the ischium. The whole pelvis in this latter bird differed widely in its proportions, being far broader proportionally to its length than in Bankiva. Sternum.—This bone is generally so much deformed that it is scarcely possible to compare its form strictly in the several breeds. The shape of the triangular ex- tremity of the lateral processes differs considerably, being either almost equilateral or much elon- gated. The front margin of the crest is more or less perpendicu- lar and varies greatly, as does the curvature of the posterior end, and the flatness of the low- er surface. The outline of the manubrial process also varies, being wedge-shaped in the Ban- kiva, and rounded in the Spanish breed. The furcula differs in be- ing more or less arched, and greatly, as may be seen in the accompanying outlines, in the shape of the terminal plate ; but D the shape of this part differed a little in two skeletons of the wild Bankiva. The coracoids Fig. 38.--Extremity of the Furcula, of present no difference worth no- natural size, viewed laterally. A. Wild tice. The scapula varies in shape, Gallus bankiva. B. Spangled Polish being of nearly uniform breadth Fowl. C. Spanish Fowl. D. Dorking in Bankiva, much broader in the Fowl. middle in the Polish fowl, and abruptly narrowed towards the apex in the two Sultan fowls. B CHAP. VII. 325 OSTEOLOGICAL DIFFERENCES. I carefully compared each separate bone of the leg and wing, rela- tively to the same bones in the wild Bankiva, in the following breeds, which I thought were the most likely to differ ; namely, in Cochin, Dorking, Spanish, Polish, Burmese Bantam, Frizzled Indian, and black-boned Silk fowls; and it was truly surprising to see how abso- lutely every process, articulation, and pore agreed, though the bones differed greatly in size. The agreement is far more absolute than in other parts of the skeleton. In stating this, I do not refer to the relative thickness and length of the several bones; for the tarsi va- ried considerably in both these respects. But the other limb-bones varied little even in relative length. Finally, I have not examined a sufficient number of skeletons to say whether any of the foregoing differen- ces except in the skull, are characteristic of the several breeds. Apparently some differences are more common in certain breeds than in others, -as an additional rib to the fourteenth cervical vertebra in Hamburghs and Games, and the breadth of the end of the pubic bone in Cochins. Both skeletons of the Sultan fowl had eight dorsal vertebræ, and the end of the scapula in both was somewhat attenuated. In the skull, the deep medial fur- row in the frontal bones and the vertically elongated oc- cipital foramen seem to be characteristic of Cochins; as is the great breadth of the frontal bones in Dorkings; the separation and open spaces between the tips of the ascending branches of the premaxillaries and nasal bones, as well as the front part of the skull being but little de- pressed, characterise Hamburghs; the globular shape of the posterior part of the skull seems to be characteristic of laced Bantams; and lastly, the protuberance of the skull with the ascending branches of the premaxillaries partially aborted, together with the other differences be- fore specified, are eminently characteristic of Polish and other Crested fowls. But the most striking result of our examination of the skeleton is the great variability of all the bones except those of the extremities. To a certain extent we can understand why the skeleton fluctuates so much in struc- 326 CHAP. VII. FOWLS. ture; fowls have been exposed to unnatural conditions of life, and their whole organisation has thus been render- ed variable; but the breeder is quite indifferent to, and never intentionally selects, any modifications in the ske- leton. External characters, if not attended to by man,- .such as the number of the tail and wing feathers and their relative lengths, which in wild birds are generally constant points,-fluctuate in our domestic fowls in the same manner as the several parts of the skeleton. An additional toe is a "point" in Dorkings, and has become a fixed character, but is variable in Cochins and Silk- fowls. The colour of the plumage and the form of the comb are in most breeds, or even sub-breeds, eminently fixed characters ; but in Dorkings these points have not been attended to, and are variable. When any modifica- tion in the skeleton is related to some external charac- ter which man values, it has been, unintentionally on his part, acted on by selection, and has become more or less fixed. We see this in the wonderful protuberance of the skull, which supports the crest of feathers in Polish fowls, and which by correlation has affected other parts of the skull. We see the same result in the two protuberances which support the horns in the horned fowl, and in the flattened shape of the front of the skull in Hamburghs consequent on their flattened and broad “rose-combs.” We know not in the least whether additional ribs, or the changed outline of the occipital foramen, or the changed form of the scapula, or of the extremity of the furcula, are in any way correlated with other structures, or have arisen from the changed conditions and habits of life to which our fowls have been subjected ; but there is no reason to doubt that these various modifications in the skeleton could be rendered, either by direct selection, or by the selection of correlated structures, as constant and as characteristic of each breed, as are the size and shape of the body, the colour of the plumage, and the form of the comb. CHAP. VII. 327 THE EFFECTS OF DISUSE. Effects of the Disuse of Parts. Judging from the habits of our European gallinaceous birds, Gal- lus bankiva in its native haunts would use its legs and wings more than do our domestic fowls, which rarely fly except to their roosts. The Silk and the Frizzled fowls, from having imperfect wing-feath- ers, cannot fly at all; and there is reason to believe that both these breeds are ancient, so that their progenitors during many genera- tions cannot have flown. The Cochins, also, from their short wings and heavy bodies, can hardly fly up to a low perch. Therefore in these breeds, especially in the two first, a considerable diminution in the wing-bones might have been expected, but this is not the case. In every specimen, after disarticulating and cleaning the bones, I carefully compared the relative length of the two main bones of the wing to each other, and of the two main bones of the leg to each other, with those of G.bankiva, and it was surprising to see (except in the case of the tarsi) how exactly the same relative length had been retained. This fact is curious, from showing how truly the proportions of an organ may be inherited, although not fully exercised during many generations. I then compared in several breeds the length of the femur and tibia with the humerus and ulna and likewise these same bones with those of G.bankiva ; the result was that the wing bones in all the breeds (except the Burinese Jumper, which has unnaturally short legs) are slightly shortened re- latively to the leg-bones; but the decrease is so slight that it may be due to the standard specimen of G. bankiva having accidentally had wings of slightly greater length than usual; so that the measure- ments are not worth giving. But it deserves notice that the Silk and Frizzled fowls, which are quite incapable of flight, had their wings less reduced relatively to their legs than in almost any other breed! We have seen with domesticated pigeons that the bones of the wings are somewhat reduced in length, whilst the primary feathers are rather increased in length, and it is just possible, though not probable, that in the Silk and Frizzled fowls any tendency to decrease in the length of the wing-bones from disuse may have been checked through the law of compensation, by the decreased growth of the wing-feathers, and consequent increased supply of nutriment. The wing-bones, however, in both these breeds, are found to be slightly reduced in length when judged by the standard of the length of the sternum or head, relatively to these same parts in G. bankiva. The actual weight of the main bones of the leg and wing in twelve breeds is given in the two first columns in the following table. The calculated weight of the wing-bones relatively to the 328 CHAP. VII. FOWLS. leg-bones, in comparison with the leg and wing-bones of G.bankiva, are given in the third column,—the weight of the wing-bones in G. bankiva being called a hundred." 73 TABLE I. Names of Breeds. Weight of Wing- bones rela- tively to Actual Actual the Leg- Weight of Weight of Femur and Humerus bones, in compari- Tibia. and Ulna. son with these same bones in G. bankiva. Gallus bankiva .. wild male 1 Cochin .. male 2 Dorking male 3 Spanish (Minorca) male 4 Gold Spangled Polish male 5 Game, black-breasted male 6 Malay female 7 Sultan 8 Indian Frizzled .. .. male 9 Burmese Jumper female 10 Hamburgh (pencilled) male 11 Hamburgh (pencilled) female 12 Silk (black-boned) .. female Grains. 86 311 557 386 306 293 231 189 206 53 157 114 88 Grains. 54 162 248 183 145 143 116 94 88 36 104 77 57 100 83 70 75 75 77 80 79 67 108 106 108 103 .. male In the eight first birds, belonging to distinct breeds, in this table, we see a decided reduction in the weight of the bones of the wing. In the Indian Frizzled fowl, which cannot fly, the reduction is car- ried to the greatest extent, namely, to thirty-three per cent. of their proper proportional weight. In the next four birds, including the Silk-hen, which is incapable of flight, we see that the wings, rela- tively to the legs, are slightly increased in weight; but it should be 73 It may be well to explain how the calculation has been made for the third column. In G. bankiva the leg-bones are to the wing-bones as 86 : 54, or as (neglecting decimals) 100: 62 ;-in Cochins as 311 : 162, or as 100:52 ;-in Dorkings as 557; 248, or as 100: 44; and so on for the other breeds. We thus get the series of 62, 52, 44 for the relative weights of the wing-bcnes in G. bankiva, Cochins, Dorkings, &c. And now tak- ing 100, instead of 62, for the weight of the wing-bones in G. bankiva, we get, by another rule of three, 83 as the weight of the wing-bones in Cochins; 70 in the Dorkings; and so on for the remainder of the third column in the table. CHAP. VII. 329 THE EFFECTS OF DISUSE. observed that, if in these birds the legs had become from any cause reduced in weight, this would give the false appearance of the wings having increased in relative weight. Now a reduction of this na- ture has certainly occurred with the Burmese Jumper, in which the legs are abnormally short, and in the two Hamburghs and Silk fowl, the legs, though not short, are formed of remarkably thin and light bones. I make these statements, not judging by mere eye- sight, but after having calculated the weights of the leg-bones rela- tively to those of G. bankiva, according to the only two standards of comparison which I could use, namely, the relative lengths of the head and sternum ; for I do not know the weight of the body in G. bankiva, which would have been a better standard. According to these standards, the leg-bones in these four fowls are in a marked manner far lighter than in any other breed. It may therefore be concluded that in all cases in which the legs have not been through some unknown cause much reduced in weight, the wing-bones have become reduced in weight relatively to the leg-bones, in comparison with those of G. bankiva. And this reduction of weight may, I ap- prehend, safely be attributed to disuse. To make the foregoing table quite satisfactory, it ought to have been shown that in the eight first birds the leg-bones have not ac- tually increased in weight out of due proportion with the rest of the body; this I cannot show, from not knowing, as already remarked, the weight of the wild Bankiva.74 I am indeed inclined to suspect that the leg-bones in the Dorking, No. 2 in the table, are proportion- ally too heavy; but this bird was a very large one, weighing 7 lb. 2 oz., though very thin. Its leg-bones were more than ten times as heavy as those of the Burmese Jumper! I tried to ascertain the length both of the leg-bones and wing-bones relatively to other parts of the body and skeleton ; but the whole organisation in these birds, which have been so long domesticated, has become so variable, that no certain conclusions could be reached. For instance, the legs of the above Dorking cock were nearly three-quarters of an inch too short relatively to the length of the sternum; and more than three- quarters of an inch too long relatively to the length of the skull, in comparison with these same parts in G. bankiva. In the following Table II. in the two first columns we see in inches and decimals the length of the sternum, and the extreme depth of its crest to which the pectoral muscles are attached. In the third 74 Mr. Blyth (in Annals and Mag. of Nat. Hist.,' 2nd series, vol. i., 1848, p. 456) gives 31 lb. as the weight of a full- grown male G. bankiva; but from what I have seen of the skins and skeletons of various breeds, I cannot believe that my two specimens of G. bankiva could have weighed so much, 330 CHAP. VII. FOWLS. column we have the calculated depth of the crest, relatively to the length of the sternum, in comparison with these same parts in G. bankiva.75 TABLE II. Names of Breeds. Length of Sternum. Depth of Crest, Depth of relatively to the Crest length of the of Sternum, in Sternum. comparison with G. bankiva. .. .. male Gallus bankiva .. male 1 Cochin .. male 2 Dorking .. male 3 Spanish male 4 Polish .. 5 Game .. .. male 6 Malay.. female 7 Sultan 8 Frizzled hen 9 Burmese Jumper .. female 10 Hamburgh .. male 11 Hamburgh female 12 Silk fowl .. .. female Inches. 4:20 5.83 6.95 6:10 5.07 5:55 5:10 4:47 4.25 3:06 5.08 4.55 4:49 Inches. 1:40 1:55 1.97 1.83 1:50 1:55 1:50 1:36 1.20 0.85 1:40 1.26 1:01 100 78 84 90 87 81 87 90 84 81 81 81 66 .. male .. male By looking to the third column we see that in every case the depth of the crest relatively to the length of the sternum, in comparison with G. bankiva, is diminished, generally between 10 and 20 per cent. But the degree of reduction varies much, partly in consequence of the frequently deformed state of the sternum. In the Silk-fowl, which cannot fly, the crest is 34 per cent. less deep than what it ought to have been. This reduction of the crest in all the breeds probably accounts for the great variability, before referred to in the curvature of the furcula, and in the shape of its sternal extremity. Medical men believe that the abnormal form of the spine so com- monly observed in women of the higher ranks results from the at- tached muscles not being fully exercised. So it is with our domes- tic fowls, for they use their pectoral muscles but little, and, out of twenty-five sternums examined by me, three alone were perfectly symmetrical, ten were moderately crooked, and twelve were de- formed to an extreme degree. Finally, we may conclude with respect to the various 75 The third column is calculated on the same principle as explained in the pre- vious foot-note, p. 328. CHAP. VII. 331 CORRELATION OF GROWTH. breeds of the fowl, that the main bones of the wing have probably been shortened in a very slight degree; that they have certainly become lighter relatively to the leg- bones in all the breeds in which these latter bones are not unnaturally short or delicate; and that the crest of the sternum, to which the pectoral muscles are attached, has invariably become less prominent, the whole sternum being also extremely liable to deformity. These results we may attribute to the lessened use of the wings. Correlation of Growth.—I will here sum up the few facts which I have collected on this obscure, but impor- tant, subject. In Cochins and Game-fowls there is some relation between the colour of the plumage and the dark- ness of the egg-shell and even of the yolk. In Sultans the additional sickle-feathers in the tail are apparently related to the general redundancy of the plumage, as shown by the feathered legs, large crest, and beard. In two tailless fowls which I examined the oil-gland was aborted. A large crest of feathers, as Mr. Tegetmeier has remarked, seems always accompanied by a great diminution or almost entire absence of the comb. A large beard is similarly accompanied by diminished or ab- sent wattles. These latter cases apparently come under the law of compensation or balancement of growth. A large beard beneath the lower jaw and a large top-knot on the skull often go together. The comb when of any peculiar shape, as with Horned, Spanish, and Hamburgh fowls, affects in a corresponding manner the underlying skull; and we have seen how wonderfully this is the case with Crested fowls when the crest is largely developed. With the protuberance of the frontal bones the shape of the internal surface of the skull and of the brain is great- ly modified. The presence of a crest influences in some unknown way the development of the ascending branches of the premaxillary bone, and of the inner processes of the nasal bones; and likewise the shape of the external orifice of the nostrils. There is a plain and curious corre- 332 CHAP. VII. FOWLS. lation between a crest of feathers and the imperfectly os- sified condition of the skull. Not only does this hold good with nearly all crested fowls, but likewise with tuft- ed ducks, and as Dr. Günther informs me with tufted geese in Germany. Lastly, the feathers composing the crest in male Polish fowls resemble hackles, and differ greatly in shape from those in the crest of the female. The neck, wing-coverts, and loins in the male bird are properly covered with hackles, and it would appear that feathers of this shape have spread by correlation to the head of the male. This little fact is interesting; because, though both sexes of some wild gallinaceous birds have their heads similarly ornamented, yet there is often a difference in the size and shape of feathers forming their crests. Furthermore there is in some cases, as in the male Gold and in the male Amherst pheasants (P. pictus and Amherstic), a close relation in colour, as well as in structure, between the plumes on the head and on the loins. Hence it would appear that the same law has regulated the state of the feathers on the head and body, both with species living under their natural conditions, and with birds which have varied under domestication. CHAP. VIII. 333 DOMESTIC DUCKS. CHAPTER VIII. DUCKS-GOOSE - PEACOCK_TURKEY_GUINEA-FOWL- CANARY-BIRD-GOLD-FISH – HIVE-BEES — SILK-MOTHS. DUCKS, SEVERAL BREEDS OF — PROGRESS OF DOMESTICATION - ORIGIN OF, FROM THE COMMON WILD-DUCK — DIFFERENCES IN THE DIFFERENT BREEDS - OSTEOLOGICAL DIFFERENCES —EF- FECTS OF USE AND DISUSE ON THE LIMB-BONES. GOOSE, ANCIENTLY DOMESTICATED — LITTLE VARIATION OT — SE- BASTOPOL BREED. PEACOCK, ORIGIN OF BLACK-SHOULDERED BREED. TURKEY, BREEDS OF — CROSSED WITH THE UNITED STATES SPE- CIES — EFFECTS OF CLIMATE ON. GUINEA-FOWL, CANARY-BIRD, GOLD-FISH, HIVE-BEES. SILK-MOTHS, SPECIES AND BREEDS OF — ANCIENTLY DOMESTI- CATED CARE IN THEIR SELECTION - DIFFERENCES IN THE DIFFERENT RACES — IN THE EGG, CATERPILLAR, AND COCOON STATES - INHERITANCE OF CHARACTERS - IMPERFECT WINGS LOST INSTINCTS -- CORRELATED CHARACTERS. I WILL, as in previous cases, first briefly describe the chief domestic breeds of the duck:- BREED 1. Common Domestic Duck.- Varies much in colour and in proportions, and differs in instincts and disposition from the wild- duck. There are several sub-breeds :--(1) The Aylesbury, of great size, white, with pale-yellow beak and legs; abdominal sack largely developed. (2) The Rouen, of great size, coloured like the wild- duck, with green or mottled beak; abdominal sack largely devel- oped. (3) Tufted Duck, with a large top-knot of fine downy feathers, supported on a fleshy mass, with the skull perforated be- neath. The top-knot in a duck which I imported from Holland was two and a half inches in diameter. (4) Labrador (or Canadian, or Buenos Ayres, or East Indian); plumage entirely black; beak 334 CHLAP. VIII. DOMESTIC DUCKS. broader, relatively to its length, than in the wild-duck; eggs slightly tinted with black. This sub-breed perhaps ought to be ranked as a breed; it includes two sub-varieties, one as large as the common domestic duck, which I have kept alive, and the other smaller and often capable of flight. I presume it is this latter sub- variety which has been described in France 2 as flying well, being rather wild, and when cooked having the flavour of the wild-duck ; nevertheless this sub-variety is polygamous, like other domesticated ducks and unlike the wild-duck. These black Labrador ducks breed true; but a case is given by Dr. Turral of the French sub-variety producing young with some white feathers on the head and neck, and with an ochre-coloured patch on the breast. BREED 2. Hook-billed Duck.--This bird presents an extraordinary appearance from the downward curvature of the beak. The head is often tufted. The common colour is white, but some are coloured like wild-ducks. It is an ancient breed, having been noticed in 1676. It shows its prolonged domestication by almost incessantly laying eggs, like the fowls which are called everlasting layers. BREED 3. Call-Duck. Remarkable from its small size, and from the extraordinary loquacity of the female. Beak short. These birds are either white, or coloured like the wild-duck. BREED 4. Penguin Duck. This is the most remarkable of all the breeds, and seems to have originated in the Malayan archipela go. It walks with its body extremely erect, and with its thin neck stretched straight upwards. Beak rather short. Tail upturned, in- cluding only 18 feathers. Femur and metatarsi elongated. Almost all naturalists admit that the several breeds are descended from the common wild duck (Anas bos- chas) ; most fanciers, on the other hand, take as usual a very different view. Unless we deny that domestica- tion, prolonged during centuries, can affect even such unimportant characters as colour, size, and in a slight degree proportional dimensions and mental disposition, 1 Poultry Chronicle' (1854), vol. ii. p. 91, and vol. i. p. 330. 2 Dr. Turral, in 'Bull. Soc. d'Acclimat.,' tom. vii., 1860, p. 541. 3 Willughby's Ornithology,' by Ray, p. 381. This breed is also figured by Albin, in 1734, in his 'Nat. Hist. of Birds,' vol. ii. p. 86. 4 F. Cuvier, in ' Annales du Muséum, tom. ix. p. 128, says that moulting and incubation alone stop these ducks laying. Mr. B. P. Brent makes a similar remark in the Poultry Chronicle, 1855, vol. iii. p. 512 5 Rev. E. S. Dixon, Ornamental and Domestic Poultry' (1848), p. 117. Dr. B. P. Brent, in Poultry Chronicle,' vol.iii. 1855, p. 512. CHAP. VIII. 335 EXTERNAL DIFFERENCES. there is no reason whatever to doubt that the domestic duck is descended from the common wild species, for the one differs from the other in no important character. We have some historical evidence with respect to the period and progress of the domestication of the duck. It was unknown to the ancient Egyptians, to the Jews of the Old Testament, and to the Greeks of the Homeric period. About eighteen centuries ago Columella' and Varro speak of the necessity of keeping ducks in netted enclosures like other wild fowl, so that at this period there was danger of their flying away. Moreover, the plan recommended by Columella to those who might wish to increase their stock of ducks, namely, to collect the eggs of the wild bird and to place them under a hen, shows, as Mr. Dixon remarks, “that the duck had not at this time become a naturalised and prolific inmate of the Roman poultry-yard." The origin of the domestic duck from the wild species is recognised in nearly every lan- guage of Europe, as Aldrovandi long ago remarked, by the same name being applied to both. The wild duck has a wide range from the Himalayas to North America. It crosses readily with the domestic bird, and the crossed offspring are perfectly fertile. Both in North America and Europe the wild duck has been found easy to tame and breed. In Sweden this ex- periment was carefully tried by Tiburtius; he succeeded in rearing wild ducks for three generations, but, though they were treated like common ducks, they did not vary even in a single feather. The young birds suffered from being allowed to swim about in cold water, as is known 6 Crawfurd on the Relation of Domes- ticated Animals to Civilisation,' read be- fore the Brit. Assoc. at Oxford. 7 Dureau de la Malle, in 'Annales des Sciences Nat.,' tom. xvii. p. 164; and tom. xxi. p. 55. Rev. E. S. Dixon, 'Or- namental Poultry,' p. 118. Tame ducks were not known in Aristotle's time, as re- marked by Volz, in his Beiträge zur Kulturgeschichte, 1852, s. 78. 8 I quote this account from 'Die En- ten, Schwanen-zucht, Ulm, 1828, s. 143. See Audubon's Ornithological Biogra- phy,' vol. iii., p. 168, on the taming of ducks on the Mississippi. For the same fact in England, see Mr. Waterton, in 336 CITAP. VIII. DOMESTIC DUCKS. to be the case, though the fact is a strange one, with the young of the common domestic duck. An accurate and well-known observer in England has described in detail his often repeated and successful experiments in domes- ticating the wild duck. Young birds are easily reared from eggs hatched under a bantam; but to succeed it is indispensable not to place the eggs of both the wild and tame duck under the same hen, for in this case “the young wild ducks die off, leaving their more hardy breth- ren in undisturbed possession of their foster-mother's The difference of habit at the onset in the newly- hatched ducklings almost entails such a result to a cer- tainty.” The wild ducklings were from the first quite tame towards those who took care of them as long as they wore the same clothes, and likewise to the dogs and cats of the house. They would even snap with their beaks at the dogs, and drive them away from any spot which they coveted. But they were much alarmed at strange men and dogs. Differently from what occurred in Sweden, Mr. Hewitt found that his young birds al- ways changed and deteriorated in character in the course of two or three generations; notwithstanding that great care was taken to prevent any crossing with tame ducks. After the third generation his birds lost the elegant car- riage of the wild species, and began to acquire the gait of the common duck. They increased in size in each generation, and their legs became less fine. The white collar round the neck of the mallard became broader and less regular, and some of the longer primary wing-feathers became more or less white. When this occurred, Mr. Hewitt always destroyed his old stock and procured fresh eggs from wild nests; so that he never bred the same family for more than five or six generations. His care. Loudon's 'Mag. of Nat. Hist.,' vol. viii. 1835, p. 542; and Mr. St. John, Wild Sports and Nat. Hist. of the Highlands, 1846, p. 129. 9 Mr. E. Hewitt, in 'Journal of Horti- culture,' 1862, p. 773; and 1863, p. 39. CAAP, VIII. 337 EXTERNAL DIFFERENCES. birds continued to pair together, and never became poly- gamous like the common domestic duck. I have given these details, because no other case, as far as I know, has been so carefully recorded by a competent observer of the progress of change in wild birds reared for several generations in a domestic condition. From these considerations there can hardly be a doubt that the wild duck is the parent of the common domestic kind; nor need we look to distinct species for the parent- age of the more distinct breeds, namely, Penguin, Call, Hook-billed, Tufted, and Labrador ducks. I will not re- peat the arguments used in the previous chapters on the improbability of man having in ancient times domesti- cated several species since become unknown or extinct, though ducks are not readily exterminated in the wild state ;-on some of the supposed parent-species having had abnormal characters in comparison with all the other species of the genus, as with hook-billed and penguin ducks ;-on all the breeds, as far as is known, being fer- tile together;10—on all the breeds having the same gene- ral disposition, instinct, &c. But one fact bearing on this question may be noticed: in the great duck family, one species alone, namely, the male of A. boschas, has its four middle tail feathers curled upwardly; now in every one of the above-named domestic breeds these curled feathers exist, and on the supposition that they are de- scended from distinct species, we must assume that man formerly hit upon species all of which had this now uni- que character. Moreover, sub-varieties of each breed are coloured almost exactly like the wild duck, as I have 10 I have met with several statements on the fertility of the several breeds when crossed. Mr. Yarrell assured me that Call and common ducks are per- fectly fertile together. I crossed Hook- billed and common ducks, and a Penguin and Labrador, and the crossed ducks were quite fertile, though they were not bred inter se, so that the experiment was not fully tried. Some half-bred Pen- guins and Labradors were again crossed with Penguins, and subsequently bred by me inter se, and they were extremely fertile. 15 338 CHAP. VIII. DOMESTIC DUCKS. seen with the largest and smallest breeds, namely Rouens and Call-ducks, and, as Mr. Brent states," is the case with Hook-billed ducks. This gentleman, as he informs me, crossed a white Aylesbury drake and a black Labra- dor duck, and some of the ducklings as they grew up assumed the plumage of the wild duck. With respect to Penguins, I have not seen many speci- mens, and none were coloured precisely like the wild duck; but Sir James Brooke sent me three skins from Lombok and Bali, in the Malayan archipelago; the two females were paler and more rufous than the wild duck, and the drake differed in having the whole under and upper 'surface (excepting the neck, tail-coverts, tail, and wings) silver-grey, finely pencilled with dark lines, closely like certain parts of the plumage of the wild mallard. But I found this drake to be identical in every feather with a variety of the common breed procured from a farm-yard in Kent, and I have occasionally elsewhere seen similar specimens. The occurrence of a duck bred under so peculiar a climate as that of the Malayan archi- pelago, where the wild species does not exist, with ex- actly the same plumage as may occasionally be seen in our farm-yards, is a fact worth notice. Nevertheless the climate of the Malayan archipelago apparently does tend to cause the duck to vary much, for Zollinger," speaking of the Penguin breed, says that in Lombok “there is an unusual and very wonderful variety of ducks.” One Pen- guin drake which I kept alive differed from those of which the skins were sent me from Lombok, in having its breast and back partially coloured with chesnut- brown, thus more closely resembling the Mallard. For these several facts, more especially from the drakes of all the breeds having curled tail-feathers, and from certain sub-varieties in each breed occasionally resem- 11 Poultry Chronicle,' 1855, vol. iii. 12 Journal of the Indian Archipelą. go,' vol. v. p. 334. p. 512. CHAP. VIII. 339 EXTERNAL DIFFERENCES. bling in general plumage the wild duck, we may conclude with confidence that all the breeds are descended from A. boschae. I will now notice some of the peculiarities characteristic of the several breeds. The eggs vary in colour; some common ducks laying pale-greenish and others quite white eggs. The eggs which are first laid during each season by the black Labrador duck, are tinted black, as if rubbed with ink. So that with ducks, as with poultry, some degree of correlation exists between the colour of the plumage and the egg-shell. A good observer assured me that one year his Labrador ducks laid almost perfectly white eggs, but that the yolks were this same season dirty olive-green, instead of as usual of a golden yellow, so that the black tint appeared to have passed inwards. Another curious case shows what singular varia- tions sometimes occur and are inherited ; Mr. Hansell 13 relates that he had a common duck which always laid eggs with the yolk of a dark brown colour like melted glue; and the young ducks, hatched from these eggs, laid the same kind of eggs, so that the breed had to be destroyed. The hooked-billed duck has a most remarkable appearance (see fig. of skull, woodcut No. 39); and its peculiar beak has been in- herited at least since the year 1676. This structure is evidently analogous with that described in the Bagadotten carrier pigeon. Mr. Brent 14 says that, when hook-billed ducks are crossed with com- mon ducks,“ many young ones are produced with the upper man- dible shorter than the lower, which not unfrequently causes the death of the bird." A tuft of feathers on the head is by no means a rare occurrence; namely, in the true tufted breed, the hook-billed, the common farmyard duck, and in a duck having no other pecu- liarity which was sent to me from the Malayan archipelago. The tuft is only so far interesting as it affects the skull, which is thus rendered slightly more globular, and is perforated by numerous apertures. Call-ducks are remarkable from their extraordinary loquacity; the drake only hisses like common drakes; nevertheless, when paired with the common duck, he transmits to his female offspring a strong quacking tendency. This loquacity seems at first a surprising character to have been acquired under domestication. 14 Poultry Chronicle,' 1855, vol. iii, 18 The Zoologist,' vols. vii., vüi. (1849-1850), p. 2853. p. 512. 340 CHAP. VIII. DOMESTIC DUCKS. But the voice varies in the different breeds; Mr. Brent 15 says that hook-billed ducks are very loquacious, and that Rouens utter a dull, loud, and monotonous cry, easily distinguishable by an ex- perienced ear." As the loquacity of the Call-duck is highly ser- viceable, these birds being used in decoys, this quality may have been increased by selection. For instance, Colonel Hawker says, if young wild-ducks cannot be got for a decoy," by way of make-shift, select tame birds which are the most clamorous, even if their colour should not be like that of wild ones. 16 It has been falsely asserted thai Call-ducks hatch their eggs in less time than common ducks.17 B A Fig. 39.-Skulls, viewed laterally, reduced to two-thirds of the natural size. A. Wild Duck. B. Hook-billed Duck. The Penguin duck is the most remarkable of all the breeds; the thin neck and body are carried erect; the wings are small; the tail is upturned, and the thigh bones and metatarsi are considerably lengthened in proportion with the same bones in the wild duck. In five specimens examined by me there were only eighteen tail-feathers instead of twenty as in the wild duck; but I have also found only eighteen and nineteen tail-feathers in two Labrador ducks. On the 15 Poultry Chronicle,' vol. iii., 1855, p. 312. With respect to Rouens, see ditto, vol. i., 1854, p. 167. 16 Col. Hawker's Instructions to young Sportsmen,' quoted by Mr. Dixon in his Ornamental Poultry,' p. 125. 17 Cottage Gardener,' April 9th, 1861. CHAP. VIII. DIFFERENCES IN THEIR SKELETONS. 341 middle toe, in three specimens, there were twenty-seven or twenty- eight scutellæ, whereas in two wild ducks there were thirty-one and thirty-two. The Penguin when crossed transmits with much power its peculiar form of body and gait to its offspring; this was manifest with some hybrids raised in the Zoological Gardens, be- tween one of these birds and the Egyptian goose 18 (Tadorna Ægyp- tiaca), and likewise with some mongrels which I raised between the Penguin and Labrador duck. I am not much surprised that some writers have maintained that this breed must be descended from an unknown and distinct species; but from the reasons already assigned, it seems to me far more probable that it is the descend- ant, much modified by domestication under an unnatural chimate, of Anas boschas. Osteological Characters. The skulls of the several different breeds differ from each other and from the skull of the wild duck in very lit- tle except in the proportional length and curvature of the premaxil- laries. These latter bones in the Call-duck are short, and a line drawn from their extremities to the summit of the skull is nearly straight, instead of being concave as in the common duck; so that the skull resembles that of a small goose. In the hook-billed duck (fig. 39) these same bones as well as the lower jaw curve downwards in a most remarkable manner, as represented. In the Labrador duck the premaxillaries are rather broader than in the wild duck ; and in two skulls of this breed the vertical ridges on each side of the supra-occipital bone are very prominent. In the Penguin the pre- maxillaries are relatively shorter than in the wild duck; and the in- ferior points of the paramastoids more prominent. In a Dutch tufted duck, the skull under the enormous tuft was slightly more globular and was perforated by two large apertures; in this skull the lachry- mal bones were produced much further backwards, so as to have a different shape and to nearly touch the post. lat. processes of the frontal bones, thus almost completing the bony orbit of the eye. As the quadrate and pterygoid bones are of such complex shape and stand in relation with so many other bones, I carefully com- pared them in all the principal breeds; but excepting in size they presented no difference. Vertebræ and Ribs.In one skeleton of the Labrador duck there were the usual fifteen cervical vertebræ and the usual nine dorsal vertebræ bearing ribs; in the other skeleton there were fifteen cervical and ten dorsal vertebræ with ribs; nor, as far as could be judged, was 18 These hybrids have been described by M. Selys-Longchamps in the 'Bul- letins (tom. xii. No. 10) Acad. Roy. de Bruxelles.' 342 CHAP. VIII. DOMESTIC DUCKS. this owing merely to a rib having been developed on the first lumbar vertebra ; for in both skeletons the B A lumbar vertebræ agreed perfectly in number, shape, and size with those of the wild duck. In two skeletons of the Call-duck there were fifteen cervical and nine dor- sal vertebra; in a third skeleton D small ribs were attached to the so- o called fifteenth cervical vertebra, making ten pairs of ribs; but these ten ribs do not correspond, or arise from the same vertebrae, with the ten in the above-mentioned Labra- dor duck. In the Call-duck, which Fig. 40.--Cervical Vertebræ, of natural had small ribs attached to the fif- size. A. Eighth cervical vertebra of teenth cervical vertebra, the hæ- Wild Duck, viewed on hæmal sur- mal spines of the thirteenth and face. B. Eighth cervical vertebra of Call Duck, viewed as above. C. fourteenth (cervical) and of the Twelfth cervical vertebra of Wild seventeenth (dorsal) vertebræ cor- Duck, viewed laterally. D. Twelfth responded with the spines on the cervical vertebra of Aylesbury Duck, viewed laterally. fourteenth, fifteenth, and eigh- teenth vertebræ of the wild duck: so that each of these vertebræ had acquired a structure proper to one posterior to it in position. In the twelfth cervical vertebra of this same Call-duck (fig. 40, B), the two branches of the hæmal spine stand much closer together than in the wild duck (A), and the descending hæmal processes are much short- ened. In the Penguin duck the neck from its thinness and erect- ness falsely appears (as ascertained by measurement) to be much elongated, but the cervical and dorsal vertebræ present no differ- ence; the posterior dorsal vertebræ, however, are more completely anchylosed to the pelvis than in the wild duck. The Aylesbury duck has fifteen cervical and ten dorsal vertebræ furnished with ribs, but the same number of lumbar, sacral, and caudal vertebra, as far as could be traced, as in the wild duck. The cervical vertebræ in this same duck (fig. 40, D) were much broader and thicker relatively to their length than in the wild (C); so much so, that I have thought it worth while to give a sketch of the eighth cervical vertebra in these two birds. From the foregoing statements we see that the fif- teenth cervical vertebra occasionally becomes modified into a dorsal vertebra, and when this occurs all the adjoining vertebræ are modi- fied. We also see that an additional dorsal vertebra bearing a rib is CHAP. VIII. 343 EFFECTS OF USE AND DISUSE. occasionally developed, the number of the cervical and lumbar verte- bræ apparently remaining the same as usual. I examined the bony enlargement of the trachea in the males of the Penguin, Call, Hook-billed, Labrador, and Aylesbury breeds; and in all it was identical in shape. The Pelvis is remarkably uniform ; but in the skeleton of the Hook-billed duck the anterior part is much bowed inwards; in the Aylesbury and some other breeds the ischiadic foramen is less elon- gated. In the sternum, furcula, coracoids, and scapula, the differ ences are so slight and so variable as not to be worth notice, except that in two skeletons of the Penguin duck the terminal portion of the scapula was much attenuated. In the bones of the leg and wing no modification in shape could be observed. But in Peguin and Hook-billed ducks, the terminal phalanges of the wing are a little shortened. In the former, the femur and metatarsus (but not the tibia) are considerably lengthened, relatively to the same bones in the wild duck, and to the wing-bones in both birds. This elongation of the leg-bones could be seen whilst the bird was alive, and is no doubt connected with its peculiar up- right manner of walking. In a large Aylesbury duck, on the other hand, the tibia was the only bone of the leg which relatively to the other bones was slightly lengthened. On the effects of the increased and decreased Use of the Limbs.- In all the breeds the bones of the wing (measured separately after having been cleaned) relatively to those of the leg have become slightly shortened, in comparison with the same bones in the wild duck, as may be seen in the following table :- Name of Breed. Length of Femur, Length of Humerus, Tibia, and Meta- Radius, and Meta- tarsus together. carpus together. Or as Wild mallard Aylesbury Tufted (Dutch) Penguin Call Inches. 7:14 8.64 8.25 7.12 6:20 Inches. 9.28 10:43 9.83 8.78 7.77 100 : 129 100 - 120 100 : 119 100 : 123 100 : 125 Length of same Bones. Length of all the Bones of Wing. Inches. Inches. 6.85 Wild duck (another specimen) .. Common domestic duck 10-07 11.26 100: 147 100 : 138 8:15 344 CHAP. VIII. DOMESTIC DUCKS. In the foregoing table we see that, in comparison with the wild duck, the reduction in the length of the bones of the wing, rela- tively to those of the legs, though slight, is universal. The reduc- tion is least in the Call-duck, which has the power and the habit of frequently flying In weight there is a greater relative difference between the bones of the leg and wing, as may be seen in the following table - Name of Breed. Weight of Femur, Tibia, and Metatarsus. Weight of Humerus, Radius, and Metacarpus. Or as Wild mallard Aylesbury Hooked-bill Tufted (Dutch) Penguin Labrador Grains. 54 164 107 111 75 141 Grains. 97 204 160 148 90-5 165 93 100 : 179 100 : 124 100 : 149 100 : 133 100 : 120 100 : 117 100 : 163 Call .. Weight of all the Bones of the Leg and Foot. Weight of all the Bones of the Wing. Grains, Grains. Wild (another speci- 66 115 100 : 173 men) Common domestic duck 127 158 100 : 124 In these domesticated birds, the considerably lessened weight of the bones of the wing (i. e. on an average, twenty-five per cent. of their proper proportional weight), as well as their slightly lessened length, relatively to the leg-bones, might follow, not from any ac- tual decrease in the wing-bones, but from the increased weight and length of the bones of the legs. The first of the two tables on the next page shows that the leg-bones relatively to the weight of the entire skeleton have really increased in weight; but the second table shows that according to the same standard the wing-bones have also really decreased in weight; so that the relative dispro- portion shown in the foregoing tables between the wing and leg- bones, in comparison with those of the wild duck, is partly due to the increase in weight and length of the leg-bones, and partly to the decrease in weight and length of the wing-bones. With respect to the two following tables I may first state that I tested them by taking another skeleton of a wild duck and of a CHAP. VIII. 345 EFFECTS OF USE AND DISUSE. common domestic duck, and by comparing the weight of all the bones of the leg with all those of the wings, and the result was the same. In the first of these tables we see that the leg-bones in each case have increased in actual weight. It might have been expected that, with the increased or decreased weight of the entire skeleton, the leg-bones would have become proportionally heavier or lighter; but their greater weight in all the breeds relatively to the other bones can be accounted for only by these domestic birds having used their legs in walking and standing much more than the wild, for they never fly, and the more artificial breeds rarely swim. In Name of Breed. Weight of entire Skeleton (N. B. One Meta- tarsus and Foot was removed Weight of from each skele- Femur, Tibia, and Metatarsus. ton, as it had been acciden- tally lost in two cases.) Or as Wild mallard Aylesbury Tufted (Dutch) Penguin Call (from Mr. Fox) Grains. 839 1925 1404 871 717 Grains. 54 164 111 75 57 1000 : 64 1000 : 85 1000 : 79 1000 : 86 1000 : 79 Weight of Weight of Skele- Humerus, Ra- ton as above. dius and Ulna, and Metacarpus. Wild mallard Aylesbury Tufted (Dutch) Penguin Call (from Mr. Baker) Call (from Mr. Fox) Grains. 839 1925 1404 871 914 717 Grains. 97 204 148 90 100 92 1000 : 115 1000 : 105 1000 : 105 1000 : 103 1000 : 109 1000 : 129 . . the second table we see, with the exception of one case, a plain re- duction in the weight of the bones of the wing, and this no doubt has resulted from their lessened use. The one exceptional case, namely, in one of the Call-ducks, is in truth no exception, for this bird was constantly in the habit of flying about; and I have seen it day after day rise from my grounds, and fly for a long time in circles of more than a mile in diameter. In this Call-duck there is not only no decrease, but an actual increase in the weight of the wing-bones relatively to those of the wild duck; and this probably 15* 346 CHAP. VIII. DOMESTIC DUCKS. is consequent on the remarkable lightness and thinness of all the bones of the skeleton. Lastly, I weighed the furcula, coracoids, and scapula of a wild duck and of a common domestic duck, and I found that their weight, relatively to that of the whole skeleton, was as one hun- dred in the former to eighty-nine in the latter; this shows that these bones in the domestic duck have been reduced eleven per cent. of their due proportional weight. The prominence of the crest of the sternum, relatively to its length, is also much reduced in all the domestic breeds. These changes have evidently been caused by the lessened use of the wings. It is well known that several birds, belonging to dif- ferent Orders, and inhabiting oceanic islands, have their wings greatly reduced in size and are incapable of flight. I suggested in my Origin of Species' that, as these birds are not persecuted by any enemies, the reduction of their wings has probably been caused by gradual dis- use. Hence, during the earlier stages of the process of reduction, such birds might be expected to resemble in the state of their organs of flight our domesticated ducks. This is the case with the water-hen (Gallinula nesiotis) of Tristan d'Acunha, which “ can flutter a little, but ob- viously uses its legs, and not its wings, as a mode of escape.” Now Mr. Sclater 19 finds in this bird that the wings, sternum, and coracoids, are all reduced in length, and the crest of the sternum in depth, in comparison with the same bones in the European water-hen (G. chloro- pus). On the other hand, the thigh-bones and pelvis are increased in length, the former by four lines, rela- tively to the same bones in the common water-hen. Hence in the skeleton of this natural species nearly the same changes have occurred, only carried a little further, as with our domestic ducks, and in this latter case I pre- sume no one will dispute that they have resulted from the lessened use of the wings and the increased use of the legs. 19 Proc. Zoolog. Soc.,'1861, p. 261. CHAP. VIII. 347 DOMESTIC GOOSE. . THE GOOSE. This bird deserves some notice, as hardly any other an- ciently domesticated bird or quadruped has varied so little. That geese were anciently domesticated we know from certain verses in Homer; and from these birds hav- ing been kept (388 B.c.) in the Capitol at Rome as sacred to Juno, which sacredness implies great antiquity.20 That the goose has varied in some degree, we may infer from naturalists not being unanimous with respect to its wild parent-form; though the difficulty is chiefly due to the existence of three or four closely allied wild European species. A large majority of capable judges are con- vinced that our geese are descended from the wild Grey- lag goose (A. ferus); the young of which can easily be tamed, 22 and are domesticated by the Laplanders. This species, when crossed with the domestic goose, produced in the Zoological Gardens, as I was assured in 1849, per- fectly fertile offspring 2 Yarrell 24 has observed that the lower part of the trachea of the domestic goose is some- times flattened, and that a ring of white feathers sometimes surrounds the base of the beak. These characters seem at first good indications of a cross at some former period with the white-fronted goose (A. albifrons); but the white ring is variable in this latter species, and we must not overlook the law of analogous variation; that is, of one species assuming some of the characters of allied species. As the goose has proved so inflexible in its organization 20 Ceylon,' by Sir J. E. Tennent, 1959, vol. i. p. 485; also J. Crawfurd on the Relation of Domest. Animals to Civilisation, read before Brit. Assoc., 1860. See also Ornamental Poultry,' by Rev. E. S. Dixon, 1848, p. 132. The goose figured on the Egyptian monu- ments seems to have been the Red goose of Egypt. 21 Macgillivray's 'British Birds,' vol. iv. p. 593. 22 Mr. A. Strickland (Annals and Mag. of Nat. Hist.,' 3rd Series, vol. iii. 1859, p. 122) reared some young wild geese, and found them in habits and in all characters identical with the domes- tic goose. 23 See also Hunter's Essays,' edited by Owen, vol. ii. p. 322. 24 Yarrell's British Birds,' vol. iii. p. 142. He refers to the Laplanders domes. ticating the goose. 348 CHAP. VIII. DOMESTIC GOOSE. under long-continued domestication, the amount of varia- tion which can be detected is worth giving. It has in- creased in size and in productiveness; 25 and varies from white to a dusky colour. Several observers 26 have stated that the gander is more frequently white than the goose, and that when old it almost invariably becomes white; but this is not the case with the parent-form, the A. ferus. Here, again, the law of analogous variation may have come into play, as the snow-white male of the Rock- Goose (Bernicla antarctica) standing on the sea-shore by his dusky partner is a sight well known to all those wh have traversed the sounds of Tierra del Fuego and the Falkland Islands. Some geese have topknots; and the skull beneath, as before stated, is perforated. A sub- breed has lately been formed with the feathers reversed at the back of the head and neck.27 The beak varies a little in size, and is of a yellower tint than in the wild species; but its colour and that of the legs are both slightly variable. This latter fact deserves attention, because the colour of the legs and beak is highly ser- viceable in discriminating the several closely allied wild forms.29 At our Shows two breeds are exhibited; viz. the Embden and Toulouse; but they differ in nothing ex- cept colour. Recently a smaller and singular variety has been imported from Sebastopol, with the scapular feathers (as I hear from Mr. Tegetmeier, who sent me specimens) greatly elongated, curled, and even spirally 25 L. Lloyd, Scandinavian Adven- tures,' 1854, vol. ii. p. 413, says that the wild goose lays from five to eight eggs, which is a much fewer number than that laid by our domestic goose. 26 The Rev. L. Jenyns seems first to have made this observation in his Bri- tish Animals.' See also Yarrell, and Dixon in his Ornamental Poultry' (p. 139), and Gardener's Chronicle,' 1857, Zoological Soc., Feb. 1860. 28 W. Thompson, 'Natural Hist. of Ire- land,' 1851, vol. iii. p. 31. The Rev. E. S. Dixon gave me some information on the varying colour of the beak and legs. 29 Mr. A. Strickland, in 'Annals and Mag. of Nat. Hist.,' 3rd series, vol. iii., 1859, p. 122. 30 Poultry Chronicle,' vol. i., 1854, p. 498; vol. iii. p. 210. 31 The Cottage Gardener,' Sept. 4th, 1860, p. 348. P. 45. 27 Mr. Bartlett exhibited the head and neck of a bird thus characterised at the CHAP. VIII. DOMESTIC GOOSE. 349 twisted. The margins of these feathers are rendered plumose by the divergence of the barbs and barbules, so that they resemble in some degree those on the back of the black Australian swan. These feathers are likewise remarkable from the central shaft, which is excessively thin and transparent, being split into fine filaments, which, after running for a space free, sometimes coalesce again. It is a curious fact that these filaments are regularly clothed on each side with fine down or barbules, precisely like those on the proper barbs of the feather. This struc- ture of the feathers is transmitted to half-bred birds. In Gallus sonneratii the barbs and barbules blend to- gether, and form thin horny plates of the same nature with the shaft: in this variety of the goose, the shaft divides into filaments which acquire barbules, and thus resemble true barbs. Although the domestic goose certainly differs some- what from any known wild species, yet the amount of variation which it has undergone, as compared with most domesticated animals, is singularly small. This fact can be partially accounted for by selection not having come largely into play. Birds of all kinds which present many distinct races are valued as pets or ornaments; no one makes a pet of the goose; the name, indeed, in more lan- guages than one, is a term of reproach. The goose is valued for its size and flavour, for the whiteness of its feathers which adds to their value, and for its prolificness and tameness. In all these points the goose differs from the wild parent-form ; and these are the points which have been selected. Even in ancient times the Roman . gourmands valued the liver of the white goose; and Pierre Belon $2 in 1555 speaks of two varieties, one of which was larger, more fecund, and of a better colour than the other; and he expressly states that good mana- 32 L'Hist. de la Nature des Oiseaux,' par P. Belon, 1555, p. 156. With respect to the livers of white geese being prefer- red by the Romans, see Isid. Geoffroy St. Hilaire, Hist. Nat. Gén.,' tom. iii. p. 58. 350 CHAP. VIII. PEACOCK. gers attended to the colour of their goslings, so that they might know which to preserve and select for breeding. THE PEACOCK. This is another bird which has hardly varied under do- mestication, except in sometimes being white or piebald. Mr. Waterhouse carefully compared, as he informs me, skins of the wild Indian and domestic bird, and they were identical in every respect, except that the plumage of the latter was perhaps rather thicker. Whether our birds are descended from those introduced into Europe in the time of Alexander, or have been subsequently imported, is doubtful. They do not breed very freely with us, and are seldom kept in large numbers,-circumstances which would greatly interfere with the gradual selection and formation of new breeds. There is one strange fact with respect to the peacock, namely, the occasional appearance in England of the “japanned” or “ black-shouldered” kind. This form has lately been named on the high authority of Mr. Sclater as a distinct species, viz. Pavo nigripennis, which he be- lieves will hereafter be found wild in some country, but not in India, where it is certainly unknown. These ja- panned birds differ conspicuously from the common pea- cock in the colour of their secondary wing-feathers, sca- pulars, wing-coverts, and thighs; the females are much paler, and the young, as I hear from Mr. Bartlett, like- wise differ. They can be propagated perfectly true. Although they do not resemble the hybrids which have been raised between P. cristatus and muticus, neverthe- less they are in some respects intermediate in character between these two species; and this fact favours, as Mr. Sclater believes, the view that they form a distinct and natural species. 33 33 Mr. Sclater on the black-shouldered peacock of Latham, Proc. Zoolog. Soc.,' April 24th, 1860. CHAP. VIII. 351 РЕАСОСК. On the other hand, Sir R. Heron states 54 that this breed suddenly appeared within his memory in Lord Brownlow's large stock of pied, white, and common pea- cocks. The same thing occurred in Sir J. Trevelyan's flock composed entirely of the common kind, and in Mr. Thornton's stock of common and pied peacocks. It is remarkable that in these two latter instances the black- shouldered kind increased,“ to the extinction of the pre- viously existing breed.” I have also received through Mr. Sclater a statement from Mr. Hudson Gurney that he reared many years ago a pair of black-shouldered pea- cocks from the common kind; and another ornithologist, Prof. A. Newton, states that, five or six years ago, a female bird, in all respects similar to the female of the black-shouldered kind, was produced from a stock of common peacocks in his possession, which during more than twenty years had not been crossed with birds of any other strain. Here we have five distinct cases of japanned birds suddenly appearing in flocks of the com- mon kind kept in England. Better evidence of the first appearance of a new variety could hardly be desired. If we reject this evidence, and believe that the japan- ned peacock is a distinct species, we must suppose in all these cases that the common breed had at some former period been crossed with the supposed P. nigripennis, but had lost every trace of the cross, yet that the birds occasionally produced offspring which suddenly and com- pletely reacquired through reversion the characters of P. nigripennis. I have heard of no other such case in the animal or vegetable kingdom. To perceive the full im- probability of such an occurrence, we may suppose that a breed of dogs had been crossed at some former period with a wolf, but had lost every trace of the wolf-like character, yet that the breed gave birth in five instances in the same country, within no great length of time, to a 34 Proc. Zoolog. Soc.,' April 14th, 1835. 352 CHAP. VIII. TURKEY. wolf perfect in every character; and we must further sup- pose that in two of the cases the newly produced wolves afterwards spontaneously increased to such an extent as to lead to the extinction of the parent breed of dogs. So remarkable a form as the P. nigripennis, when first im- ported, would have realized a large price; it is therefore improbable that it should have been silently introduced and its history subsequently lost. On the whole the evi- dence seems to me, as it did to Sir R. Heron, to prepon- derate strongly in favour of the black-shouldered breed being a variation, induced either by the climate of Eng- land, or by some unknown cause, such as reversion to a primordial and extinct condition of the species. On the view that the black-shouldered peacock is a variety, the case is the most remarkable ever recorded of the abrupt appearance of a new form, which so closely resembles a true species that it has deceived one of the most experi- enced of living ornithologists. THE TURKEY. It seems fairly well established by Mr. Gould, that the turkey, in accordance with the history of its first intro- duction, is descended from a wild Mexican species (Me- leagris Mexicana) which had been already domesticated by the natives before the discovery of America, and which differs specifically, as it is generally thought, from the common wild species of the United States. Some naturalists, however, think that these two forms should be ranked only as well-marked geographical races. How- this may be, the case deserves notice because in the 35 Proc. Zoolog. Soc.,' April 8th, 1856, p. 61. Prof. Baird believes (as quoted in Tegetmeier's Poultry Book,' 1866, p. 269) that our turkeys are de- scended from a West Indian species now extinct. But besides the improbability of a bird having long ago become extinct in these large and luxuriant islands, it appears (as we shall presently see) that the turkey degenerates in India, and this fact indicates that it was not aboriginally an inhabitant of the lowlands of the tropics. CHAP. VIII. 353 TURKEY. United States wild male turkeys sometimes court the domestic hens, which are descended from the Mexican form, “and are generally received by them with great pleasure.” 36 Several accounts bave likewise been pub- lished of young birds, reared in the United States from the eggs of the wild species, crossing and commingling with the common breed. In England, also, this same species has been kept in several parks; from two of which the Rev. W. D. Fox procured birds, and they crossed freely with the common domestic kind, and during many years afterwards, as he informs me, the turkeys in his neighbourhood clearly showed traces of their crossed parentage. We here have an instance of a domestic race being modified by a cross with a distinct species or wild race. F. Michaux 37 suspected in 1802 that the common domestic turkey was not descended from the United States species alone, but likewise from a southern form, and he went so far as to believe that English and French turkeys differed from having different proportions of the blood of the two parent-forms. English turkeys are smaller than either wild form. They have not varied in any great degree; but there are some breeds which can be distinguished-as Norfolks, Suffolks, Whites, and Copper-coloured (or Cambridge), all of which, if precluded from crossing with other breeds, propagate their kind truly. Of these kinds, the most distinct is the small, hardy, dull-black Norfolk turkey, of which the chickens are black, with occasionally white patches about the head. The other breeds scarcely differ except in colour, and their chickens are generally mottled all over with brownish-grey.38 The tuft of hair on the breast, which is proper to the male alone, occasionally appears on the breast of the domesticated female.39 The 38 Audubon's Ornithological Bio- graph.,' vol. i., 1831, pp. 4-13; and Naturalist's Library,' vol. xiv., Birds, rica,' 1802, Eng. translat., p. 217. 38. Ornamental Poultry,' by the Rev. E. S. Dixon, 1848, p. 34. 39 Rev. E. S. Dixon, id., p. 35. P. 138. 37 F. Michaux, Travels in N. Ame- 354 CHAP. VIII. TURKEY. inferior tail-coverts vary in number, and according to a German superstition the hen lays as many eggs as the cock has feathers of this kind.40 In Holland there was formerly, according to Temminck, a beautiful buff-yellow breed, furnished with an ample white topknot. Mr. Wilmot has described 41 a white turkey-cock with a crest formed of " feathers about four inches long, with bare quills, and a tuft of soft white down growing at the end." Many of the young birds whilst young inherited this kind of crest, but afterwards it either fell off or was pecked out by the other birds. This is an interesting case, as with care a new breed might probably have been formed ; and a topknot of this nature would have been to a certain extent analogous to that borne by the males in several allied genera, such as Euplocomus, Lophophorus, and Pavo. Wild turkeys, believed in every instance to have been imported from the United States, have been kept in the parks of Lords Powis, Leicester, Hill, and Derby. The Rev. W. D. Fox procured birds from the two first-named parks, and he informs me that they certainly differed a little from each other in the shape of their bodies and in the barred plumage on their wings. These birds likewise differed from Lord Hill's stock. Some of the latter kept at Oulton by Sir P. Egerton, though precluded from crossing with common turkeys, occasionally produced much paler-coloured birds, and one that was almost white, but not an albino. These half-wild turkeys in thus slightly differing from each other present an analogous case with the wild cattle kept in the several British parks. We must suppose that the differences have re- sulted from the prevention of free intercrossing between birds ranging over a wide area, and from the changed conditions to which they have been exposed in England. 40 Bechstein, Naturgesch. Deutschlands,' B. iii., 1793, s. 309. 41 Gardener's Chronicle,' 1852, p. 699. CHAP. VIII. 355 GUINEA FOWL---CANARY BIRD. 42 In India the climate has apparently wrought a still greater change in the turkey, for it is described by Mr. Blyth as being much degenerated in size, “utterly incapable of rising on the wing," of a black colour, and “with the long pendulous appendages over the beak enormously developed.” THE GUINEA FOWL. The domesticated guinea-fowl is now believed by natural- ists to be descended from the Numida ptilorhynca, which inhabits very hot, and, in parts, extremely arid districts in Eastern Africa; consequently it has been exposed in this country to extremely different conditions of life. Nevertheless it has hardly varied at all, except in the plumage being either paler or darker-coloured. It is a singular fact that this bird varies more in colour in the West Indies and on the Spanish Main, under a hot though humid climate, than in Europe. The guinea-fowl has become thoroughly feral in Jamaica and in St. Domingo, and has diminished in size; the legs are black, whereas the legs of the aboriginal African bird are said to be grey. This small change is worth notice on account of the often- repeated statement that all feral animals invariably revert in every character to their original type. THE CANARY BIRD. As this bird has been recently domesticated, namely, within the last 350 years, its variability deserves no- tice. It has been crossed with nine or ten other species of Fringillidæ, and some of the hybrids are almost com- 42 E. Blyth, in 'Annals and Mag. of Nat. Hist.,' 1847, vol. xx. p. 391. 43 Roulin makes this remark in 'Mem. de divers Savans, l'Acad. des Sciences, tom. vi., 1835, p. 319. Mr. Hill, of Spanish Town, in a letter to me, describes five varieties of the guinea-fowl in Ja- maica. I have seen singular pale-colour- ed varieties imported from Barbadoes and Demerara. 44 For St. Domingo, see M. A. Salle, in Proc. Soc. Zoolog., ' 1857, p. 236. Mr. Hill remarks to me, in his letter, on the colour of the legs of the feral birds in Jamaica. 356 CHAP. VIIL CANARY BIRD. pletely fertile; but we have no evidence that any distinct breed has originated from such crosses. Notwithstand- ing the modern domestication of the canary, many varie- ties have been produced; even before the year 1718 a list of twenty-seven varieties was published in France, 45 and in 1779 a long schedule of the desired qualities was printed by the London Canary Society, so that me- thodical selection has been practised during a consi- derable period. The greater number of the varieties differ only in colour and in the markings of their plu- mage. Some breeds, however, differ in shape, such as the hooped or bowed canaries, and the Belgian canaries with their much elongated bodies. Mr. Brent measured one of the latter and found it eight inches in length, whilst the wild canary is only five and a quarter inches long. There are topknotted canaries, and it is a singular fact, that, if two topknotted birds are matched, the young, instead of having very fine topknots, are generally bald, or even have a wound on their heads. It would ap- pear as if the topknot were due to some morbid con- dition which is increased to an injurious degree when two birds in this state are paired. There is a feather- footed breed, and another with a kind of frill running down the breast. One other character deserves notice from being confined to one period of life and from being strictly inherited at the same period : namely, the wing and tail feathers in prize canaries being black, “but this colour is retained only until the first moult; once moult- ed, the peculiarity ceases. 1948 Canaries differ much in dis- position and character, and in some small degree in song. They produce eggs three or four times during the year. 45 Mr. B. P. Brent, The Canary, British Finches,' &c., pp. 21, 30. 46 Cottage Gardener,' Dec. 11th, 1855, An account is here given of all the varieties. For many measurements of the wild birds, see Mr. E. Vernon Har- court, id., Dec. 25th, 1855, p. 223. 47 Bechstein, Naturgesch. der Stu- benvögel,' 1840, s. 243 ; see s. 252, on the inherited song of Canary-birds. With respect to their baldness, see also W. Kidd's Treatise on Song-Birds.' 48 W. Kidd's Treatise on Song-Birds.' p. 184. p. 18. CHAP. VIII. 357 GOLD-FISH. GOLD-FISH. BESIDES mammals and birds, few animals belonging to the other great classes have been domesticated; but to show that it is an almost universal law that animals, when removed from their natural conditions of life, vary, and that races can be formed when selection is applied, it is necessary to say a few words on gold-fish, bees, and silk-moths. Gold-fish (Cyprinus auratus) were introduced into Europe only two or three centuries ago; but it is be- lieved that they have been kept in confinement from an ancient period in China. Mr. Blyth Mr. Blyth º suspects from the analogous variation of other fishes that golden-coloured fish do not occur in a state of nature. These fishes fre- quently live under the most unnatural conditions, and their variability in colour, size, and in some important points of structure is very great. M. Sauvigny has de- scribed and given coloured drawings of no less than eighty-nine varieties. Many of the varieties, however, such as triple tail-fins, &c., ought to be called monstrosi- ties; but it is difficult to draw any distinct line between a variation and a monstrosity. As gold-fish are kept for ornament or curiosity, and as “the Chinese are just the people to have secluded a chance variety of any kind, and to have matched and paired from it,” 61 we may feel nearly confident that selection has been largely practised in the formation of new breeds. It is however a singular fact that some of the monstrosities or variations are not inherited; for Sir R. Heron 52 kept many of these fishes, and placed all the deformed fishes, namely, those desti- tute of dorsal fins, and those furnished with a double anal fin, or triple tail, in a pond by themselves; but 49 The 'Indian Field,' 1858, p. 255. 50 Yarrell's British Fishes,' vol. i. p. 819. 81 Mr. Blyth, in the Indian Field,' 1958, p. 255. 52 Proc. Zoolog. Soc.,' May 25th, 1842. 358 CHAP. VIII. HIVE-BEES. they did not produce a greater proportion of deform- ed offspring than the perfect fishes.” Passing over an almost infinite diversity of colour, we meet with the most extraordinary modifications of struc- ture. Thus, out of about two dozen specimens bought in London, Mr. Yarrell observed some with the dorsal fin extending along more than half the length of the back; others with this fin reduced to only five or six rays; and one with no dorsal fin. The anal fins are sometimes double, and the tail is often triple. This lat- ter deviation of structure seems generally to occur “at the expense of the whole or part of some other fin;"> 53 but Bory de Saint Vincent 54 saw at Madrid gold-fish furnished with a dorsal fin and a triple tail. One va- riety is characterized by a hump on its back near the head; and the Rev. L. Jenyns has described a most singular variety, imported from China, almost globular in form like a Diodon, with “the fleshy part of the tail as if entirely cut away; the caudal fin being set on a little behind the dorsal and immediately above the anal.” In this fish the anal and caudal fins were double; the anal fin being attached to the body in a vertical line: the eyes also were enormously large and protuberant. HIVE-BEES. BEES have been domesticated from an ancient period ; if indeed their state can be considered one of domestication, for they search for their own food, with the exception of a little generally given to them during the winter. Their habitation is a hive instead of a hole in a tree. Bees, however, have been transported into almost every quarter of the world, so that climate ought to have produced 53 Yarrell's 'British Fishes,' vol. i. p. 319. 64 Dict. Class. d'Hist. Nat.,' tom. v. p. 211. Dr. Gray has described, in 'An- nals and Mag. of Nat. Hist.,' 1860, p. 151, a nearly similar variety, but desti- tute of a dorsal fin. p. 276. 55 Observations in Nat. Hist.,' 1846, CHAP. VIII. 359 HIVE-BEES. whatever direct effect it is capable of producing. It is frequently asserted that the bees in different parts of Great Britain differ in size, colour, and temper; and Godron 6 says that they are generally larger in the south than in other parts of France; it has also been asserted that the little brown bees of High Burgundy, when transported to La Bresse, become large and yellow in the second generation. But these statements require confirmation. As far as size is concerned, it is known that bees produced in very old combs are smaller, owing to the cells having become smaller from the successive old cocoons. The best authorities 57 concur that, with the exception of the Ligurian race or species, presently to be mentioned, distinct breeds do not exist in Britain or on the Continent. There is, however, even in the same stock, some variability in colour. Thus Mr. Wood- bury states 58 that he has several times seen queen bees of the common kind annulated with yellow like Ligurian queens, and the latter dark-coloured like common bees. He has also observed variations in the colour of the drones, without any corresponding difference in the queens or workers of the same hive. The great apiarian Dzierzon, in answer to my queries on this subject, says that in Germany bees of some stocks are decidedly dark, whilst others are remarkable for their yellow colour. Bees also seem to differ in habits in different districts, for Dzierzon adds, “If many stocks with their offspring are more inclined to swarm, whilst others are richer in honey, so that some bee-keepers even distinguish between swarm- ing and honey-gathering bees, this is a habit which has 59 56 De l'Espèce,' 1859, p. 459. With respect to the bees of Burgundy, see M. Gérard, art. 'Espèce,' in Dict. Univers. d'Hist. Nat.' 57 See a discussion on this subject, in answer to a question of mine, in 'Journal of Horticulture,' 1862, pp. 225-242; also Mr. Bevan Fox, in ditto, 1862, p. 284. 58 This excellent observer may be im- plicitly trusted; see Journal of Horti- culture,' July 14th, 1863, p. 39. 59 Journal of Horticulture,' Sept. 9th, 1862, p. 463; see also Herr Kleine on same subject (Nov. 11th, p. 643), who sums up, that, though there is some variability in colour, no constant or per- ceptible differences can be detected in the bees of Germany, 360 CHAP. VIII. HIVE-BEES. become second nature, caused by the customary mode of keeping the bees and the pasturage of the district. For example; what a difference in this respect one may perceive to exist between the bees of the Lüneburg heath and those of this country!".... ......"Removing an old queen and substituting a young one of the current year is here an infallible mode of keeping the strongest stock from swarming and preventing drone-breeding; whilst the same means if adopted in Hanover would certainly be of no avail.” I procured a hive full of dead bees from Jamaica, where they have long been naturalised, and, on carefully comparing them under the microscope with my own bees, I could detect not a trace of dif- ference. This remarkable uniformity in the hive-bee, wherever kept, may probably be accounted for by the great diffi- culty, or rather impossibility, of bringing selection into play by pairing particular queens and drones, for these insects unite only during flight. Nor is there any record, with a single partial exception, of any person having separated and bred from a hive in which the workers presented some appreciable difference. In order to form a new breed, seclusion from other bees would, as we now know, be indispensable; for since the introduction of the Ligurian bee into Germany and England, it has been found that the drones wander at least two miles from their own hives, and often cross with the queens of the common bee. The Ligurian bee, although perfectly fertile when crossed with the common kind, is ranked by most naturalists as a distinct species, whilst by others it is ranked as a natural variety: but this form need not here be noticed, as there is no reason to believe that it is the product of domestication. The Egyptian and some other bees are likewise ranked by Dr. Gerstäcker, 1 but 60 Mr. Woodbury has published seve- ral such accounts in Journal of Horti- culture,' 1861 and 1862. 61 Annals and Mag. of Nat. Hist.,' 3rd series, vol. xi. p. 389. CHAP. VIII. 361 SILK-MOTHS. not by other highly competent judges, as geographical races; and he grounds his conclusion in chief part on the fact that in certain districts, as in the Crimea and Rhodes, the hive-bee varies so much in colour, that the several geographical races can be closely connected by intermediate forms. I have alluded to a single instance of the separation and preservation of a particular stock of bees. Mr. Lowe 62 procured some bees from a cottager a few miles from Edinburgh, and perceived that they differed from the com- mon bee in the hairs on the head and thorax being light- er coloured and more profuse in quantity. From the date of the introduction of the Ligurian bee into Great Britain we may feel sure that these bees had not been crossed with this form. Mr. Lowe propagated this variety, but unfortunately did not separate the stock from his other bees, and after three generations the new character was almost completely lost. Nevertheless, as he adds, “a great number of the bees still retain traces, though faint, of the original colony.” This case shows us what could probably be effected by careful and long-continued selec- tion applied exclusively to the workers, for, as we have seen, queens and drones cannot be selected and paired. SILK-MOTHS. THESE insects are in several respects interesting to us, more especially because they have varied largely at early periods of life, and the variations have been inherited at corresponding periods. As the value of the silk-moth depends entirely on the cocoon, every change in its struc- ture and qualities has been carefully attended to, and races differing much in the cocoon, but hardly at all in the adult state, have been produced. With the races of 82 The Cottage Gardener,' May, 1860, p. 110; and ditto in Journal of Hort..' 1962, p. 242. 16 362 CHAP. VIII. SILK-MOTHS. most other domestic animals, the young resemble each other closely, whilst the adults differ much. It would be useless, even if it were possible, to describe all the many kinds of silk-worms. Several distinct spe- cies exist in India and China which produce useful silk, and some of these are capable of freely crossing with the common silk-moth, as has been recently ascertained in France. Captain Hutton states that throughout the world at least six species have been domesticated ; and he believes that the silk-moths reared in Europe belong to two or three species. This, however, is not the opi- nion of several capable judges who have particularly at- tended to the cultivation of this insect in France; and hardly accords with some facts presently to be given. The common silk-moth (Bombyx mori) was brought to Constantinople in the sixth century, whence it was carried into Italy, and in 1494 into France. Everything has been favourable for the variation of this insect. It is believed to have been domesticated in China as long ago as 2700 B.C. It has been kept under unnatural and diversified conditions of life, and has been transported into many countries. There is reason to believe that the nature of the food given to the caterpillar influences to a certain extent the character of the breed.65 Disuse has apparently aided in checking the development of the wings. But the most important element in the produc- tion of the many now existing, much modified races, no doubt has been the close attention which has long been applied in many countries to every promising variation. The care taken in Europe in the selection of the best co- coons and moths for breeding is notorious, and the pro- 64 69 Transact. Entomolog. Soc.,' 3rd se- ries, vol. iii. pp. 143-173, and pp. 295-331. 64 Godron, 'De l'Espèce,'1859, tom. i. p. 460. The antiquity of the silk-worm in China is given on the authority of Stanislas Julien, 65 See the remarks of Prof. Westwood, General Hearsey, and others, at the meeting of the Entomolog. Soc. of Lon- don, July, 1861. 66 See, for instance, M. A. de Quatre- fage's 'Etudes sur les Maladies actuelles du Ver à Soie,' 1859, p. 101. CHAP. VIII. 363 THEIR DIFFERENCES. duction of eggs is followed as a distinct trade in parts of France. I have made inquiries through Dr. Falconer, and am assured that in India the natives are equally care- ful in the process of selection. In China the production of eggs is confined to certain favourable districts, and the raisers are precluded by law from producing silk, so that their whole attention may be necessarily given up to this one object.º7 The following details on the differences between the several breeds are taken, when not stated to the contrary, from M. Robinet's excellent work,68 which bears every sign of care and large ex- perience. The eggs in the different races vary in colour, in shape (being round, elliptic, or oval), and in size. The eggs laid in June in the south of France, and in July in the central provinces, do not hatch until the following spring; and it is in vain, says M. Robinet, to expose them to a temperature gradually raised, in order that the caterpillar may be quickly developed. Yet occasionally, without any known cause, batches of eggs are produced, which immediately begin to undergo the proper changes, and are hatched in from twenty to thirty days. From these and some other analogous facts it may be concluded that the Trevoltini silkworms of Italy, of which the caterpillars are hatched in from fifteen to twenty days, do not necessarily form, as has been maintained, a distinct species. Although the breeds which live in temperate countries produce eggs which cannot be immediately hatched by artificial heat, yet when they are removed to and reared in a hot country they gra- dually acquire the character of quick development, as in the Trevol- tini races. Caterpillars.—These vary greatly in size and colour. The skin is generally white, sometimes mottled with black or grey, and occasion- ally quite black. The colour, however, as M. Robinet asserts, is not constant, even in perfectly pure breeds; except in the race tigrée, so called from being marked with transverse black stripes. 69 67 My authorities for these statements will be given in the chapter on Selection. 68 Manuel de l'Educateur de Vers à Soie,' 1848. 69 Robinet, idem, pp. 12, 318. I may add that the eggs of N. American silk- worms taken to the Sandwich Islands were very irregularly developed ; and the moths thus raised produced eggs which were even worse in this respect. Some were hatched in ten days, and others not until after the lapse of many months. No doubt a regular early cha- racter would ultimately have been ac- quired. See review in Athenæum,' 1844, p. 329, of J. Jarves' 'Scenes in the Sandwich Islands, 364 CHAP. VIII. SILK-MOTHS. As the general colour of the caterpillar is not correlated with that of the silk, Tº this character is disregarded by cultivators, and has not been fixed by selection. Captain Hutton, in the paper before referred' to, has argued with much force that the dark tiger- like marks, which so frequently appear during the later moults in the caterpillars of various breeds, are due to reversion; for the caterpillars of several allied wild species of Bombyx are marked and coloured in this manner. He separated some caterpillars with the tiger-like marks, and in the succeeding spring (pp. 149, 298) nearly all the caterpillars reared from them were dark-brindled, and the tints became still darker in the third generation. The moths reared from these caterpillars 71 also became darker, and resembled in colouring the wild B. Huttoni. On this view of the tiger like marks being due to reversion, the persistency with which they are transmitted is intelligible. Several years ago Mrs. Whitby took great pains in breeding silk- worms on a large scale, and she informed me that some of her caterpillars had dark eyebrows. This is probably the first step in reversion towards the tiger-like marks, and I was curious to know whether so trifling a character would be inherited ; at my request she separated in 1848 twenty of these caterpillars, and having kept the moths separate, bred from them. Of the many caterpillars thus reared, every one without exception had eyebrows, some darker and more decidedly marked than the others, but all had eyebrows more or less plainly visible.” Black caterpillars occasionally appear amongst those of the common kind, but in so variable a manner, that according to M. Robinet the same race will one year exclusively produce white caterpillars, and the next year many black ones; nevertheless, I have been informed by M. A. Bossi of Geneva, that, if these black caterpillars are separately bred from, they reproduce the same colour ; but the cocoons and moths reared from them do not present any difference. The caterpillar in Europe ordinarily moults four times before passing into the cocoon stage ; but there are races" à trois mues,' and the Trevoltini race likewise moults only thrice. It might have been thought that so important a physiological difference would not have arisen under domestication ; but M. Robinet 72 states that, on the one hand, ordinary caterpillars occasionally spin their cocoons after only three moults, and, on the other hand," presque toutes les races à trois mues, que nous avons expérimentées, ont fait quatre 70 The Art of rearing Silk-worms,' translated from Count Dandolo, 1825, p. 23. 71 Transact. Ent. Soc.,' ut supra, pp. 153, 308. 72 Robinet, idem, p. 817. CHAP. VIII. 365 THEIR DIFFERENCES. mues à la seconde ou à la troisième année, ce qui semble prouver qu'il a suffi de les placer dans des conditions favorables pour leur rendre une faculté qu'elles avaient perdue sous des influences moins favorables." Cocoons.—The caterpillar in changing into the cocoon loses about 50 per cent. of its weight; but the amount of loss differs in differ- ent breeds, and this is of importance to the cultivator. The cocoon in the different races presents characteristic differences; being large or small;-nearly spherical with no constriction, as in the Race de Loriol, or cylindrical with either a deep or slight constric- tion in the middle with the two ends, or with one end alone, more or less pointed. The silk varies in fineness and quality, and in being nearly white, of two tints, or yellow. Generally the colour of the silk is not strictly inherited : but in the chapter on Selection I shall give a curious account how, in the course of sixty- five generations, the number of yellow cocoons in one breed has been reduced in France from one hundred to thirty-five in the thousand. According to Robinet, the white race, called Sina, by careful selection during the last seventy-five years, " est arrivée à un tel état de pureté, qu'on ne voit pas un seul cocon jaune dans des millions de cocons blancs.” 73 Cocoons are sometimes formed, as is well known, entirely destitute of silk, which yet produce moths; unfortunately Mrs. Whitby was prevented by an accident from ascertaining whether this character would prove hereditary. Adult stage.--I can find no account of any constant difference in the moths of the most distinct races. Mrs. Whitby assured me that there was none in the several kinds bred by her; and I have re- ceived a similar statement from the eminent naturalist M. de Qua- trefages. Captain Hutton also says 74 that the moths of all kinds vary much in colour, but in nearly the same inconstant manner. Considering how much the cocoons in the several races differ, this fact is of interest, and may probably be accounted for on the same principle as the fluctuating variability of colour in the caterpillar, namely, that there has been no motive for selecting and perpetuat- ing any particular variation. The males of the wild Bombycidæ "fly swiftly in the day-time and evening, but the females are usually very sluggish and inac- tive." 75 In several moths of this family the females have abortive wings, but no instance is known of the males being incapable of flight, for in this case the species could hardly have been perpetu- 73 Robinet, idem, pp. 306-317. 74 Transact. Ent. Soc. ut supra, p. 817. 75 Stephens' Illustrations, Haustel- lala,' vol.ii. p. 35. See also Capt. Hut- ton, Transact. Ent. Soc.' idem, p. 152. 366 CHAP. VIII. SILK-MOTHS. ated. In the silk-moth both sexes have imperfect, crumpled wings, and are incapable of flight; but still there is a trace of the charac- teristic difference in the two sexes; for though, on comparing a number of males and females, I could detect no difference in the de- velopment of their wings, yet I was assured by Mrs. Whitby that the males of the moths bred by her used their wings more than the females, and could flutter downwards, though never upwards. She also states that, when the females first emerge from the cocoon, their wings are less expanded than those of the male. The degree of imperfection, however, in the wings varies much in different races and under different circumstances; M. Quatrefages76 says that he has seen a number of moths with their wings reduced to a third, fourth, or tenth part of their normal dimensions, and even to mere short straight stumps : "il me semble qu'il y a là un véritable arrêt de développement partiel.” On the other hand, he describes the fe- male moths of the André Jean breed as having "leurs ailes larges et étalées. Un seul présente quelques courbures irrégulières et des plis anomaux." As moths and butterflies of all kinds reared from wild caterpillars under confinement often have crippled wings, the same cause, whatever it may be, has probably acted on silk-moths, but the disuse of their wings during so many generations has, it may be suspected, likewise come into play. The moths of many breeds fail to glue their eggs to the surface on which they are laid," but this proceeds, according to Capt. Hut- ton,78 merely from the glands of the ovipositor being weakened. As with other long-domesticated animals, the instincts of the silk- moth have suffered. The caterpillars, when placed on a mulberry- tree, often commit the strange mistake of devouring the base of the leaf on which they are feeding, and consequently fall down ; but they are capable, according to M. Robinet, 79 of again crawling up the trunk. Even this capacity sometimes fails, for M. Martins 60 placed some caterpillars on a tree, and those which fell were not able to remount and perished of hunger, they were even inca- pable of passing from leaf to leaf. Some of the modifications which the silk-moth has undergone stand in correlation with each other. Thus the eggs of the moths which produce white cocoons and of those which produce yellow co- coons differ slightly in tint. The abdominal feet also of the cater- pillars which yield white cocoons are always white, whilst those 78 Etudes sur les Maladies du Ver à Soie,' 1859, pp. 304, 209. 77 Quatrefages, Etudes,' &c., p. 214 78 Transact. Ent. Soc.,' ut supra, p. 151. 79 Manuel de l'Educateur,' &c., p. 26. 80 Godron, 'De l'Espèce,' p. 462. 6 CHAP. VIII. 367 THEIR DIFFERENCES. which give yellow cocoons are invariably yellow. We have seen that the caterpillars with dark tiger-like stripes produce moths which are more darkly shaded than other moths. It seems well established "2 that in France the caterpillars of the races which pro- duce white silk, and certain black caterpillars, have resisted, better than other races, the disease which has recently devastated the silk- districts. Lastly, the races differ constitutionally, for some do not succeed so well under a temperate climate as others; and a damp soil does not equally injure all the races.83 From these various facts we learn that silk-moths, like the higher animals, vary greatly under long-continued domestication. We learn also the more important fact that variations may occur at various periods of life, and be inherited at corresponding periods. And finally we see that insects are amenable to the great principle of Selection. 81 Quatrefages, 'Etudes,' &c., pp. 12, 209, 214, 82 Robinet, Manuel,' &c., p. 308. 83 Robinet, idem, p. 15. 368 CHAP, IX, PRELIMINARY REMARKS, CHAPTER IX. CULTIVATED PLANTS: CEREAL AND CULINARY PLANTS. PRELIMINARY REMARKS ON THE NUMBER AND PARENTAGE OF CULTIVATED PLANTS — FIRST, STEPS IN CULTIVATION — GEO- GRAPHICAL DISTRIBUTION OF CULTIVATED PLANTS. CEREALIA.— DOUBTS ON THE NUMBER OF SPECIES. WHEAT: VARJETIES OF-INDIVIDUAL VARIABILITY - CHANGED HABITS SELECTION — ANCIENT HISTORY OF THE VARIETIES. MAIZE : GREAT VARIATION OF - DIRECT ACTION OF CLIMATE ON. CULINARY PLANTS. - CABBAGES: VARIETIES OF, IN FOLIAGE AND STEMS, BUT NOT IN OTHER PARTS — PARENTAGE OF OTHER SPECIES OF BRASSICA. PEAS: AMOUNT OF DIFFERENCE IN THE SEVERAL KINDS, CHIEFLY IN THE PODS AND SEED SOME VARIETIES CONSTANT, SOME HIGHLY VARIABLE DO NOT INTER- CROSS. BEANS. -POTATOES : NUMEROUS VARIETIES OF- DIFFERING LITTLE, EXCEPT IN THE TUBERS - CHARACTERS IN- HERITED. I SHALL not enter into so much detail on the variability of cultivated plants, as in the case of domesticated animals. The subject is involved in much difficulty. Botanists have generally neglected cultivated varieties, as beneath their notice. In several cases the wild prototype is un- known or doubtfully known; and in other cases it is hardly possible to distinguish between escaped seedlings and truly wild plants, so that there is no safe standard of comparison by which to judge of any supposed amount of change. Not a few botanists believe that several of our anciently cultivated plants have become so profoundly modified that it is not possible now to recognise their aboriginal parent-forms. Equally perplexing are the CHAP. IX. 369 ON CULTIVATED PLANTS. doubts whether some of them are descended from one species, or from several inextricably commingled by crossing and variation. Variations often pass into, and cannot be distinguished from, monstrosities; and mon- strosities are of little significance for our purpose. Many varieties are propagated solely by grafts, buds, layers, bulbs, &c., and frequently it is not known how far their peculiarities can be transmitted by seminal genera- tion. Nevertheless some facts of value can be gleaned; and other facts will hereafter be incidentally given. One chief object in the two following chapters is to show how generally almost every character in our cultivated plants has become variable. Before entering on details a few general remarks on the origin of cultivated plants may be introduced. M. Alph. de Candolle' in an admirable discussion on this subject, in which he displays a wonderful amount of knowledge, gives a list of 157 of the most useful cultivat- ed plants. Of these he believes that 85 are almost cer- tainly known in their wild state; but on this head other competent judges' entertain great doubts. Of 40 of them, the origin is admitted by M. De Candolle to be doubtful, either from a certain amount of dissimilarity which they present when compared with their nearest allies in a wild state, or from the probability of the latter not being truly wild plants, but seedlings escaped from culture. Of the entire 157, 32 alone are ranked by M. De Candolle as quite unknown in their aboriginal condition. But it should be observed that he does not include in his list several plants which present ill-defined characters, namely, the various forms of pumpkins, millet, sorghum, kidney- bean, dolichos, capsicum, and indigo. Nor does he in- clude flowers; and several of the more anciently culti- 1 Géographie Botanique Raisonnée,' 1855, pp. $10 to 991. 2 Review by Mr. Bentham in 'Hort. Journal,' vol. ix. 1855, p. 133, entitled Historical Notes on Cultivated Plants,' by Dr. A. Targioni-Tozzetti. See also Edinburgh Review,' 1866, p. 510. 16* 370 CHAP. IX. PRELIMINARY REMARKS, vated flowers, such as certain roses, the common Imperial lily, the tuberose, and even the lilac, are said not to be known in the wild state. From the relative numbers above given, and from other arguments of much weight, M. De Candolle concludes that plants have rarely been so much modified by culture that they cannot be identified with their wild prototypes. But on this view, considering that savages probably would not have chosen rare plants for cultivation, that useful plants are generally conspicuous, and that they could not have been the inhabitants of deserts or of re- mote and recently discovered islands, it appears strange to me that so many of our cultivated plants should be still unknown or only doubtfully known in the wild state. If, on the other hand, many of these plants have been profoundly modified by culture, the difficulty disappears. Their extermination during the progress of civilisation would likewise remove the difficulty; but M. De Candolle has shown that this probably has seldom occurred. As soon as a plant became cultivated in any country, the half-civilised inhabitants would no longer have need to search the whole surface of the land for it, and thus lead to its extirpation; and even if this did occur during a famine, dormant seeds would be left in the ground. In tropical countries the wild luxuriance of nature, as was long ago remarked by Humboldt, overpowers the feeble efforts of man. In anciently civilised temperate coun- tries, where the whole face of the land has been greatly changed, it can hardly be doubted that some plants have been exterminated; nevertheless De Candolle has shown that all the plants historically known to have been first cultivated in Europe still exist here in the wild state. MM. Loiseleur-Deslongchamps and De Candolle have 3 Hist. Notes,' as above, by Targioni- Tozzetti. 4 Considérations sur les Céréales,' 1842, p. 87. 'Géographle Bot.,' 1855, p. 930. "Plus on suppose l'agriculture ancienne et remontant à une époque d'ignorance, plus il est probable que les cultivateurs avaient choisi des espèces CHAP. IX. 371 ON CULTIVATED PLANTS. remarked that our cultivated plants, more especially the cereals, must originally have existed in nearly their present state; for otherwise they would not have been noticed and valued as objects of food. But these au- thors apparently have not considered the many accounts given by travellers of the wretched food collected by savages. I have read an account of the savages of Aus- tralia cooking, during a dearth, many vegetables in va- rious ways, in the hopes of rendering them innocuous and more nutritious. Dr. Hooker found the half-starved inhabitants of a village in Sikhim suffering greatly from having eaten arum-roots, which they had pounded and left for several days to ferment, so as partially to destroy their poisonous nature; and he adds that they cooked and ate many other deleterious plants. Sir Andrew Smith informs me that in South Africa a large number of fruits and succulent leaves, and especially roots, are used in times of scarcity. The natives, indeed, know the properties of a long catalogue of plants, some having been found during famines to be eatable, others injurious to health, or even destructive to life. He met a party of Baquanas who, having been expelled by the conquering Zulus, had lived for years on any roots or leaves which afforded some little nutriment, and distended their stom- achs, so as to relieve the pangs of hunger. They looked like walking skeletons, and suffered fearfully from con- stipation. Sir Andrew Smith also informs me that on such occasions the natives observe as a guide for them- selves, what the wild animals, especially baboons and monkeys, eat. From innumerable experiments made through dire necessity by the savages of every land, with the results handed down by tradition, the nutritious, stimulating, and medicinal properties of the most unpromising plants offrant à l'origine même un avantage in- contestable." 6 Dr. Hooker has given me this in- formation. See, also, his Himalayan Journals,' 1854, vol. ii. p. 49. 372 CHAP. IX, PRELIMINARY REMARKS, were probably first discovered. It appears, for instance, at first an inexplicable fact that untutored man, in three distant quarters of the world, should have discovered amongst a host of native plants that the leaves of the tea-plant and mattee, and the berries of the coffee, all included a stimulating and nutritious essence, now known to be chemically the same. We can also see that sav- ages suffering from severe constipation would naturally observe whether any of the roots which they devoured acted as aperients. We probably owe our knowledge of the uses of almost all plants to man having originally existed in a barbarous state, and having been often com- pelied by severe want to try as food almost everything which he could chew and swallow. From what we know of the habits of savages in many quarters of the world, there is no reason to suppose that our cereal plants originally existed in their present state so valuable to man. Let us look to one continent alone, namely, Africa: Barth® states that the slaves over a large part of the central region regularly collect the seeds of a wild grass, the Pennisetum distichum ; in another district he saw women collecting the seeds of a Poa by swinging a sort of basket through the rich mea- dow-land. Near Tete Livingstone observed the natives collecting the seeds of a wild grass; and farther south, as Andersson informs me, the natives largely use the seeds of a grass of about the size of canary-seed, which they boil in water. They eat also the roots of certain reeds, and every one has read of the Bushmen prowling about and digging up with a fire-hardened stake various roots. Similar facts with respect to the collection of seeds of wild grasses in other parts of the world could be given." & Travels in Central Africa,' Eng. translat., vol. i. pp. 529 and 390; vol. ii. pp. 29, 265, 270. Livingstone's Tra- vels,' p. 551. As in both North and South America. Mr. Edgeworth ("Journal Proc. Linn. Soc.,' vol. vi. Bot., 1862, p. 181) states that in the deserts of the Punjab poor women sweep up," by a whisk into straw baskets," the seeds of four genera of CHAP. IX. 373 ON CULTIVATED PLANTS. Accustomed as we are to our excellent vegetables and luscious fruits, we can hardly persuade ourselves that the stringy roots of the wild carrot and parsnip, or the little shoots of the wild asparagus, or crabs, sloes, &c., should ever have been valued; yet, from what we know of the habits of Australian and South African savages, we need feel no doubt on this head. The inhabitants of Switzer- land during the Stone-period largely collected wild crabs, sloes, bullaces, hips of roses, elderberries, beech-mast, and other wild berries and fruit. Jemmy Button, a Fuegian on board the Beagle, remarked to me that the poor and acid black-currants of Tierra del Fuego were too sweet for his taste. The savage inhabitants of each land, having found out by many and hard trials what plants were useful, or could be rendered useful by various cooking processes, would after a time take the first step in cultivation by planting them near their usual abodes. Livingstone states that the savage Batokas sometimes left wild fruit- trees standing in their gardens, and occasionally even planted them, “a practice seen nowhere else amongst the natives.” But Du Chaillu saw a palm and some other wild fruit-trees which had been planted; and these trees were considered private property. The next step in cultivation, and this would require but little fore- thought, would be to sow the seeds of useful plants; and as the soil near the hovels of the natives 10 would often be in some degree manured, improved varieties would sooner or later arise. Or a wild and unusually good variety of a native plant might attract the attention of some wise grasses, namely, of Agrostis, Panicum, Cenchrus, and Pennisetum, as well as the seeds of four other genera belonging to distinct families. 8 Prof. O. Heer, Die Pflanzen der Pfahlbauten, 1865, aus dem Neujahr. Naturforsc. Gesellschaft,' 1866; and Dr. H. Christ, in Rütimeyer's Die Fauna der Pfahlbauten,' 1861, s. 226. 9 Travels,' p. 535. Du Chaillu, 'Ad- ventures in Equatorial Africa,' 1861, p. 445. 10 In Tierra del Fuego the spot where wigwams had formerly stood could be dis- tinguished at a great distance by the bright green tint of the native vegeta- tion. 374 CHAP. IX. PRELIMINARY REMARKS, old savage; and he would transplant it, or sow its seed. That superior varieties of wild fruit-trees occasionally are found is certain, as in the case of the American species of hawthorns, plums, cherries, grapes, and hickories, specified by Professor Asa Gray.1 Downing also refers to certain wild varieties of the hickory, as being “of much larger size and finer flavour than the common species.” I have referred to American fruit-trees, because we are not in this case troubled with doubts whether or not the varieties are seedlings which have escaped from cultiva- tion. Transplanting any superior variety, or sowing its seeds, hardly implies more forethought than might be expected at an early and rude period of civilisation. Even the Australian barbarians “have a law that no plant bearing seeds is to be dug up after it has flowered ;” and Sir G. Grey 12 never saw this law, evidently framed for the preservation of the plant, violated. We see the same spirit in the superstitious belief of the Fuegians, that kill- ing water-fowl whilst very young will be followed by "much rain, snow, blow much.” 13 I may add, as show- ing forethought in the lowest barbarians, that the Fuegians when they find a stranded whale bury large portions in the sand, and during the often-recurrent famines travel from great distances for the remnants of the half-putrid mass. It has often been remarked 14 that we do not owe a single useful plant to Australia or the Cape of Good Hope,-countries abounding to an unparalleled degree with endemic species,—or to New Zealand, or to America south of the Plata; and, according to some authors, not to America northward of Mexico. I do not believe that any edible or valuable plant, except the canary-grass, has 11 American Acad. of Arts and Scien- ces,' April 10th, 1860, p. 413. Downing, The Fruits of America,' 1845, p. 261. 12 Journals of Expeditions in Aus- tralia,' 1841, vol. ii. p. 292. 13 Darwin's Journal of Researches, 1845, p. 215. 14 De Candolle has tabulated the facts in the most interesting manner in his Géographie Bot.,' p. 986. CHAP. IX. 375 ON CULTIVATED PLANTS. been derived from an oceanic or uninhabited island. If nearly all our useful plants, natives of Europe, Asia, and South America, had originally existed in their present condition, the complete absence of similarly useful plants in the great countries just named would indeed be a sur- prising fact. But if these plants have been so greatly modified and improved by culture as no longer closely to resemble any natural species, we can understand why the above-named countries have given us no useful plants, for they were either inhabited by men who did not cultivate the ground at all, as in Australia and the Cape of Good Hope, or who cultivated it very imperfectly, as in some parts of America. These countries do yield plants which are useful to savage man; and Dr. Hooker 15 enumerates no less than 107 such species in Australia alone; but these plants have not been improved, and consequently cannot compete with those which have been cultivated and improved during thousands of years in the civilised world. The case of New Zealand, to which fine island we as yet owe no widely cultivated plant, may seem opposed to this view; for, when first discovered, the natives cultiva- ted several plants; but all inquirers believe, in accord- ance with the traditions of the natives, that the early Polynesian colonists brought with them seeds and roots, as well as the dog, which had all been wisely preserved during their long voyage. The Polynesians are so fre- quently lost on the ocean, that this degree of prudence would occur to any wandering party: hence the early colonists of New Zealand, like the later European colo- nists, would not have had any strong inducement to cul- tivate the aboriginal plants. According to De Candolle we owe thirty-three useful plants to Mexico, Peru, and Chile; nor is this surprising when we remember the civil- ized state of the inhabitants, as shown by the fact of their 15 'Flora of Australia,' Introduction p. ex. 376 CHAP. IX. CEREAL PLANTS. having practised artificial irrigation and made tunnels through hard rocks without the use of iron or gunpow- der, and who, as we shall see in a future chapter, fully recognised, as far as animals were concerned, and there- fore probably in the case of plants, the important princi- ple of selection. We owe some plants to Brazil; and the early voyagers, namely Vespucius and Cabral, describe the country as thickly peopled and cultivated. In North America the natives cultivated maize, pumpkins, gourds, beans, and peas, "all different from ours," and tobacco : and we are hardly justified in assuming that none of our present plants are descended from these North American forms. Had North America been civilized for as long a period, and as thickly peopled, as Asia or Europe, it is probable that the native vines, walnuts, mulberries, crabs, and plums, would have given rise, after a long course of cultivation, to a multitude of varieties, some extremely different from their parent-stocks; and escaped seedlings would have caused in the New, as in the Old World, much perplexity with respect to their specific distinctness and parentage." Cerealia.-I will now enter on details. The cereals cultivated in Europe consist of four genera-wheat, rye, barley, and oats. Of wheat the best modern authorities 18 make four or five, or even seven distinct species; of rye, one; of barley, three; and of oats, two, three, or four species. So that altogether our cereals are ranked by different authors under from ten to fifteen distinct species. These 16 For Canada, see J. Cartier's Voyage in 1534; for Florida, see Narvaez and Ferdinand de Soto's Voyages. As I have consulted these and other old Voyages in more than one general collection of Voyages, I do not give precise references to the pages. See also, for several refer" ences, Asa Gray, in the 'American Jour- nal of Science, vol. xxiv., Nov. 1857, p. 441. For the traditions of the natives of New Zealand, see Crawfurd's 'Grammar and Dict. of the Malay Language,' 1552, 17 See, for example, Mr. Hewett C. Watson's remarks on our wild plums and cherries and crabs: Cybele Britannica,' vol. i. pp. 330, 334, &c. Van Mons (in his 'Arbres Fruitiers,'1835, tom. i. p. 444) declares that he has found the types of all our cultivated varieties in wild seed- lîngs, but then he looks on these seed- lings as so many aboriginal stocks. 18 See A. De Candolle, 'Géograph. Bot.,' 1855, p. 928 et seq. Godron, 'De l'Espèce,' 1859, tom, ii. p. 70; and Metz- ger, Die Getreidearten,' &c., 1841. p. cclx, Chap. IX. 377 WHEAT. have given rise to a multitude of varieties. It is a remarkable fact that botanists are not universally agreed on the aboriginal parent- form of any one cereal plant. For instance, a high authority writes in 1855,19 “We ourselves have no hesitation in stating our convic- tion, as the result of all the most reliable evidence, that none of these Cerealia exist, or have existed, truly wild in their present state, but that all are cultivated varieties of species now growing in great abundance in S. Europe or W. Asia.” On the other hand, Alph. De Candolle 20 has adduced abundantevidence that common wheat (Tri- ticum vulgare) has been found wild in various parts of Asia, where it is not likely to have escaped from cultivation; and there is force in M. Godron's remark, that, supposing these plants to be escaped seedlings, 21 if they have propagated themselves in a wild state for several generations, their continued resemblance to cultivated wheat renders it probable that the latter has retained its aboriginal cha- racter. M. de Candolle insists strongly on the frequent occurrence in the Austrian dominions of rye and of one kind of oats in an ap- parently wild condition. With the exception of these two cases, which however are rather doubtful, and with the exception of two forms of wheat and one of barley, which he believes to have been found truly wild, M. de Candolle does not seem fully satisfied with the other reported discoveries of the parent-forms of our other ce- reals. With respect to oats, according to Mr. Buckman,22 the wild English Avena fatua can be converted by a few years of careful cul- tivation and selection into forms almost identical with two very dis- tinct cultivated races. The whole subject of the origin and specific distinctness of the various cereal plants is a most difficult one; but we shall perhaps be able to judge a little better after considering the amount of variation which wheat has undergone. Metzger describes seven species of wheat, Godron refers to five, and De Candolle to only four. It is not improbable that, besides the kinds known in Europe, other strongly characterised forms exist in 19 Mr. Bentham, in his review, entitled Hist. Notes on cultivated Plants,' by Dr. A. Targioni-Tozzetti, in 'Journal of Hort. Soc.,' vol. ix. (1855), p. 133. 20 'Géograph. Bot.,'p. 928. The whole subject is discussed with admirable full- ness and knowledge. 21 Godron, 'De l'Espèce,' tom. ii. p. 72. A few years ago the excellent, though misinterpreted, observations of M. Fabre led many persons to believe that wheat was a modified descendant of Ægilops ; but M. Godron (tom. i. p. 165) has shown by careful experiments that the first step in the series, viz. Ægilops triticoides, is a hybrid between wheat and Æ. ovata. The frequency with which these hybrids spontaneously arise, and the gradual manner in which the Æ. triticoides, be- comes converted into true wheat, alone leave any doubt on the subject. 22 Report to British Association for 1857, p. 207. 378 CHAP. IX. CEREAL PLANTS. the more distant parts of the world; for Loiseleur-Deslongchamps 23 speaks of three new species or varieties, sent to Europe in 1822 from Chinese Mongolia, which he considers as being there indigenous. Moorcroft 24 also speaks of Hasora wheat in Ladakh as very peculiar. If those botanists are right who believe that at least seven species of wheat originally existed, then the amount of variation in any im- portant character which wheat has undergone under cultivation has been slight; but if only four or a lesser number of species originally existed, then it is evident that varieties so strongly marked have arisen, that they have been considered by capable judges as specifi- cally distinct. But the impossibility of deciding which forms ought to be ranked as species and which as varieties, makes it useless to specify in detail the differences between the various kinds of wheat. Speaking generally, the organs of vegetation differ little ; 25 but some kinds grow close and upright, whilst others spread and trail along the ground. The straw differs in being more or less hollow, and in quality. The ears 28 differ in colour and in shape, being quadrangu- lar, compressed, or nearly cylindrical; and the florets differ in their approximation to each other, in their pubescence, and in being more or less elongated. The presence or absence of barbs is a conspicuous difference, and in certain Gramineæ serves even as a generic cha- racter; 27 although, as remarked by Godron,28 the presence of barbs is variable in certain wild grasses, and especially in those, such as Bromus secalinus and Lolium temulentum, which habitually grow mingled with our cereal crops, and which have thus unintentionally been exposed to culture. The grains differ in size, weight, and col- our; in being more or less downy at one end, in being smooth or wrinkled, in being either nearly globular, oval, or elongated ; and finally in internal texture, being tender or hard, or even almost horny, and in the proportion of gluten which they contain. Nearly all the races or species of wheat vary, as Godron 29 has re- marked, in an exactly parallel manner,—in the seed being downy or glabrous, and in colour,—and in the florets being barbed or not barbed, &c. Those who believe that all the kinds are descended from a single wild species may account for this parallel variation by the inheritance of a similar constitution, and a consequent tendency to vary in the same manner; and those who believe in the general theory of descent with modification may extend this view to the several species of wheat, if such ever existed in a state of nature. 23 Considérations sur les Céréales, 1842-43, p. 29. 24 Travels in the Himalayan Pro- vinces,' &c., 1841, vol. i. p. 224. 25 Col. J. Le Couteur on the Varieties of Wheat,' pp. 23, 79. 26 Loiseleur-Deslongchamps, Consid. sur les Céréales,' p. 11. 27 See an excellent review in Hooker's Journ. of Botany,' vol. viii. p. 82, note. 28 De l'Espèce,' tom. ii. p. 73. 29 Idem, tom. ii. p. 75. CHAP. IX. 379 WHEAT. Although few of the varieties of wheat present any conspicuous difference, their number is great, Dalbret cultivated during thirty years from 150 to 160 kinds, and excepting in the quality of the grain they all kept true: Colonel Le Couteur possessed upwards of 150, and Philippar 322 varieties.30 As wheat is an annual, we thus see how strictly many trifling differences in character are inherited through many generations. Colonel Le Couteur insists strongly on this same fact: in his persevering and successful attempts to raise new varieties by selection, he began by choosing the best ears, but soon found that the grains in the same ear differed so that he was compelled to select them separately; and each grain generally trans- mitted its own character. The great amount of variability in the plants of the same variety is another interesting point, which would never have been detected except by an eye long practised to the work; thus Colonel Le Couteur relates 31 that in a field of his own wheat, which he considered at least as pure as that of any of his neighbours, Professor La Gasca found twenty-three sorts; and Pro- fessor Henslow has observed similar facts. Besides such individual variations, forms sufficiently well marked to be valued and to become widely cultivated sometimes suddenly appear: thus Mr. Sheriff has had the good fortune to raise in his lifetime seven new varieties, which are now extensively grown in many parts of Britain. As in the case of many other plants, some varieties, both old and new, are far more constant in character than others. Colonel Le Couteur was forced to reject some of his new sub-varieties, which he suspected had been produced from a cross, as incorrigibly sportive. With respect to the tendency to vary, Metzger 33 gives from his own experience some interesting facts: he describes three Spanish sub- varieties, more especially one known to be constant in Spain, which in Germany assumed their proper character only during hot sum- mers; another variety kept true only in good land, but after having been cultivated for twenty-five years became more constant. He mentions two other sub-varieties which were at first inconstant, but subsequently became, apparently without any selection, accustomed to their new homes, and retained their proper character. These facts show what small changes in the conditions of life cause varia- 30 For Dalbret and Philippar, see Loiseleur-Deslongchamps, Consid. sur les Céréales,' pp. 45,70. Le Couteur on Wheat, p. 6. 31 Varieties of Wheat,' Introduction, p. vi. Marshall, in his 'Rural Economy of Yorkshire,' vol. ii. p. 9, remarks that "in every field of corn there is as much variety as in a herd of cattle." 32 Gardener's Chron. and Agricult. Gazette,' 1862, p. 963. 33 Getreidearten,' 1811, s. 66, 91, 92, 116, 117. 380 CHAP. IX. CEREAL PLANTS. bility, and they further show that a variety may become habituated to new conditions. One is at first inclined to conclude with Loise. leur-Deslongchamps, that wheat cultivated in the same country is exposed to remarkably uniform conditions ; but manures differ, seed is taken from one soil to another, and what is far more important the plants are exposed as little as possible to struggle with other plants, and are thus enabled to exist under diversified conditions. In a state of nature each plant is confined to that particular station and kind of nutriment which it can seize from the other plants by which it is surrounded. Wheat quickly assumes new habits of life. The summer and winter kinds were classed by Linnæus as distinct species; but M. Monnier 34 has proved that the difference between them is only tem- porary. He sowed winter-wheat in spring, and out of one hundred plants four alone produced ripe seeds; these were sown and resown, and in three years plants were reared which ripened all their seed. Conversely, nearly all the plants raised from summer-wheat, which was sown in autumn, perished from frost; but a few were saved and produced seed, and in three years this summer-variety was con- verted into a winter-variety. Hence it is not surprising that wheat soon becomes to a certain extent acclimatised, and that seed brought from distant countries and sown in Europe vegetates at first, or even for a considerable period,35 differently from our European varieties. In Canada the first settlers, according to Kalm, 36 found their winters too severe for winter-wheat brought from France, and their summers often too short for summer-wheat ; and until they procured summer- wheat from the northern parts of Europe, which succeeded well, they thought that their country was useless for corn crops. It is notorious that the proportion of gluten differs much under different climates. The weight of the grain is also quickly affected by cli- mate: Loiseleur-Deslongchamps 37 sowed near Paris 54 varieties, obtained from the South of France and from the Black Sea, and 52 of these yielded seed from 10 to 40 per cent. heavier than the parent- seed. He then sent these heavier grains back to the South of France, but there they immediately yielded lighter seed. All those who have closely attended to the subject insist on the close adaptation of numerous varieties of wheat to various soils and climates even within the same country ; thus Colonel Le Couteur 38 34 Quoted by Godron, 'De l'Espèce,' vol. ii. p. 74. So it is, according to Metzger ("Getreidearten,' s. 18), with summer and winter barley. 36 Loiseleur-Deslongchamps, Céré- ales,' part ii, p. 224. Le Couteur, p. 70. Many others accounts could be added. 36 Travels in North America,' 1753- 1761, Eng. translat., vol. iii. p. 165. 97 Céréales,' part. ii, pp. 179-183. 38 On the Varieties of Wheat,' Intro- duct., p. vii. See Marshall, See Marshall, Rural CHAP. IX. 381 WHEAT. says, " It is the suitableness of each sort to each soil that will enable the farmer to pay his rent by sowing one variety, where he would be unable to do so by attempting to grow another of a seemingly better sort." This may be in part due to each kind becoming habi- tuated to its conditions of life, as Metzger has shown certainly oc- curs, but it is probably, in main part due to innate differences be- tween the several varieties. Much has been written on the deterioration of wheat; that the qua- lity of the flour, size of grain, time of flowering, and hardiness may be modified by climate and soil, seems nearly certain; but that the whole body of any one sub-variety ever becomes changed into an- other and distinct sub-variety, there is no reason to believe. What apparently does take place, according Le Couteur, 39 is, that some one sub-variety out of the many which may always be detected in the same field is more prolific than the others, and gradually sup- plants the variety which was first sown. With respect to the natural crossing of distinct varieties the evi- dence is conflicting, but preponderates against its frequent occur- ence. Many authors maintain that impregnation takes place in the closed flower, but I am sure from my own observations that this is not the case, at least with those varieties to which I have attended. But as I shall have to discuss this subject in another work, it may be here passed over. In conclusion, all authors admit that numerous varie- ties of wheat have arisen ; but their differences are unim- portant, unless, indeed, some of the so-called species are ranked as varieties. Those who believe that from four to seven wild species of Triticum originally existed in nearly the same condition as at present, rest their belief chiefly on the great antiquity of the several forms. It is an important fact, which we have recently learnt from the admirable researches of Heer, 1 that the inhabitants of Switzerland, even so early as the Neolithic period, culti- Econ. of Yorkshire,' vol. ii. p. 9. With respect to similar cases of adaptation in the varieties of oats, see some interesting papers in the Gardener's Chron. and Agricult. Gazette,' 1850, pp. 204, 219. 99 On the Varieties of Wheat,' p. 59. Mr. Sheriff, and a higher authority can- not be given ("Gard. Chron, and Agri- cult. Gazette,' 1862, p. 963), says, "I have never seen grain which has either been improved or degenerated by cul- tivation, so as to convey the change to the succeeding crop." 40 Alph. De Candolle, 'Géograph. Bot.,' p. 930. 41 'Planzen der Pfahlbauten,' 1866. 382 CHAP. IX. CEREAL PLANTS. vated no less than ten cereal plants, namely, five kinds of wheat, of which at least four are commonly looked at as distinct species, three kinds of barley, a panicum, and a setaria. If it could be shown that at the earliest dawn of agriculture five kinds of wheat and three of barley had been cultivated, we should of course be compelled to look at these forms as distinct species. But, as Heer has re- marked, agriculture even at the period of the lake-habita- tions had already made considerable progress; for, be- sides the ten cereals, peas, poppies, flax, and apparently apples, were cultivated. It may also be inferred, from one variety of wheat being the so-called Egyptian, and from what is known of the native country of the panicum and setaria, as well as from the nature of the weeds which then grew mingled with the crops, that the lake-inhabi- tants either still kept up commercial intercourse with some southern people or had originally proceeded as co- lonists from the South. Loiseleur-Deslongchamps 49 has argued that, if our ce- real plants had been greatly modified by cultivation, the weeds which habitually grow mingled with them would have been equally modified. But this argument shows how completely the principle of selection has been over- looked. That such weeds have not varied, or at least do not vary now in any extreme degree, is the opinion of Mr. H. C. Watson and Professor Asa Gray, as they inform me; but who will pretend to say that they do not vary as much as the individual plants of the same sub-variety of wheat ? We have already seen that pure varieties of wheat, cultivated in the same field, offer many slight va- riations, which can be selected and separately propaga- ted; and that occasionally more strongly pronounced va- riations appear, which, as Mr. Sheriff has proved, are weil worthy of extensive cultivation. Not until equal atten- tion be paid to the variability and selection of weeds, can 42 Les Céréales,' p. 94. CHAP. IX. 383 WHEAT. 43 the argument from their constancy under unintentional culture be of any value. In accordance with the princi- ples of selection we can understand how it is that in the several cultivated varieties of wheat the organs of vege- tation differ so little ; for if a plant with peculiar leaves appeared, it would be neglected unless the grains of corn were at the same time superior in quality or size. The selection of seed-corn was strongly recommended in ancient times by Columella and Celsus; and as Virgil says, "I've seen the largest seeds, tho'view'd with care, Degenerate, unless th' industrious hand Did yearly cull the largest." But whether in ancient times selection was methodically pursued we may well doubt, when we hear how labori- ous the work was found by Le Couteur. Although the principle of selection is so important, yet the little which man has effected, by incessant efforts 44 during thousands of years, in rendering the plants more productive or the grains more nutritious than they were in the time of the old Egyptians, would seem to speak strongly against its efficacy. But we must not forget that at each successive period the state of agriculture and the quantity of manure supplied to the land will have determined the maximum degree of productiveness; for it would be impossible to cultivate a highly productive variety, unless the land con- tained a sufficient supply of the necessary chemical ele- ments. We now know that man was sufficiently civilized to cultivate the ground at an immensely remote period; so that wheat might have been improved long ago up that standard of excellence which was possible under the then existing state of agriculture. One small class of facts supports this view of the slow and gradual improve- ments of our cereals. In the most ancient lake-habita- to 43 Quoted by Le Couteur, p. 16. 44 A, De Candolle, Géograph. Bot.,' p. 982. 384 CHAP. IX. CEREAL PLANTS. 45 tions of Switzerland, when men employed only flint-tools, the most extensively cultivated wheat was a peculiar kind, with remarkably small ears and grains. " Whilst the grains of the modern forms are in section from seven to eight millimètres in length, the larger grains from the lake-habitations are six, seldom seven, and the smaller ones only four. The ear is thus much narrower, and the spikelets stand out more horizontally, than in our present forms." So again with barley, the most ancient and most extensively cultivated kind had small ears, and the grains were “smaller, shorter, and nearer to each other, than in that now grown; without the husk they were 2} lines long, and scarcely 1} broad, whilst those now grown have a length of three lines, and almost the same in breadth." 46 These small-grained varieties of wheat and barley are believed by Heer to be the parent-forms of certain existing allied varieties, which have supplanted their early progenitors. Heer gives an interesting account of the first appear- ance and final disappearance of the several plants which were cultivated in greater or less abundance in Switzer- land during former successive periods, and which gene- rally differed more or less from our existing varieties. The peculiar small-eared and small-grained wheat, al- ready alluded to, was the commonest kind during the Stone period; it lasted down to the Helvetico-Roman age, and then became extinct. A second kind was rare at first, but afterwards became more frequent. A third, the Egyptian wheat (T. turgidum), does not agree exact- ly with any existing variety, and was rare during the Stone period. A fourth kind (T. dicoccum) differs from all known varieties of this form. • A fifth kind (T. mono- coccum) is known to have existed during the Stone pe- 45 O. Heer, Die Pflanzen der Pfahl- bauten,' 1866. The following passage is quoted from Dr. Christ, in 'Die Fauna der Pfahlbauten von Dr. Rütimeyer,' 1861, s. 225. 46 Heer, as quoted by Carl Vogt, 'Lec- tures on Man,' Eng. translat., p. 355. CHAP. IX, 385 MAIZE. riod only by the presence of a single ear. A sixth kind, the common T. spelta, was not introduced into Switzer- land until the Bronze age. Of barley, besides the short- eared and small-grained kind, two others were cultiva- ted, one of which was very scarce, and resembled our present common H. distichum. During the Bronze age rye and oats were introduced; the oat-grains being some- what smaller than those produced by our existing varie- ties. The poppy was largely cultivated during the Stone period, probably for its oil; but the variety which then existed is not now known. A peculiar pea with small seeds lasted from the Stone to the Bronze age, and then be- came extinct; whilst a peculiar bean, likewise having small seeds, came in at the Bronze period and lasted to the time of the Romans. These details sound like the description given by a paleontologist of the mutations in form, of the first appearance, the increasing rarity, and final extinction of fossil species, embedded in the succes- sive stages of a geological formation. Finally, every one must judge for himself whether it is more probable that the several forms of wheat, barley, rye, and oats are descended from between ten and fifteen species, most of which are now either unknown or extinct, or whether they are descended froin between four and eight species, which may have either closely resembled our present cultivated forms, or have been so widely dif- ferent as to escape identification. In this latter case, we must conclude that man cultivated the cereals at an enormously remote period, and that he formerly practised some degree of selection, which in itself is not improbable.. We may, perhaps, further believe that, when wheat was first cultivated, the ears and grains increased quickly in size, in the same manner as the roots of the wild carrot and parsnip are known to increase quickly in bulk under cultivation. Maize : Zea Mays. Botanists are nearly unanimous that all the 17 386 Chap. IX. CEREAL PLANTS. cultivated kinds belong to the same species. It is undoubtedly 47 of American origin, and was grown by the aborigines throughout the continent from New England to Chili. Its cultivation must have been extremely ancient, for Tschudi 18 describes two kinds, now ex- tinct or not known in Peru, which were taken from tombs apparent- ly prior to the dynasty of the Incas. But there is even stronger evi- dence of antiquity, for I found on the coast of Peru 19 heads of maize, together with eighteen species of recent sea-shell, embedded in a beach which had been upraised at least 85 feet above the level of the sea. In accordance with this ancient cultivation, numerous American varieties have arisen. The aboriginal form has not as yet been discovered in the wild state. A peculiar kind,50 in which the grains, instead of being naked, are concealed by husks as much as eleven lines in length, has been stated on insufficient evidence to grow wild in Brazil. It is almost certain that the aboriginal form would have had its grains thus protected ; 51 but the seeds of the Brazilian variety produce, as I hear from Professor Asa Gray, and as is stated in two published accounts, either common or husked maize; and it is not credible that a wild species, when first cultiva- ted, should vary so quickly and in so great a degree. Maize has varied in an extraordinary and conspicuous manner. Metzger,52 who paid particular attention to the cultivation of this plant, makes twelve races (unter-art) with numerous sub-varieties; of the latter some are tolerably constant, others quite inconstant. The different races vary in height from 15-18 feet to only 16-18 inches, as in a dwarf variety described by Bonafous. The whole ear is variable in shape, being long and narrow, or short and thick, or branched. The ear in one variety is more than four times as long as in a dwarf kind. The seeds are arranged in the ear in from six to even twenty rows, or are placed irregularly. The seeds 47 See Alph. De Candolle's long dis- cussion in his 'Géograph. Bot.,' p. 942. With respect to New England, see Silli- man's 'American Journal,' vol. xliv. p. 99. 48 "Travels in Peru,' Eng. translat., p. 177. 49 Geolog. Observ. on S. America, 1846, p. 49. 50 This maize is figured in Bonafous' magnificent work, Hist. Nat. du Mais,' 1836, Pl. v. bis, and in the 'Journal of Hort. Soc.,' vol i., 1846, p. 115, where an account is given of the result of sow- ing the seed. A young Guarany Indian, on seeing this kind of maize, told Au- guste St. Hilaire (see De Candolle, 'Géo- graph. Bot.,' p. 951) that it grew wild in the humid forests of his native land. Mr. Teschemacher, in Proc. ton Soe. Nat. Hist,' Oct. 19th, 1842, gives an ac- count of sowing the seed. 51 Moquin-Tandon, 'Eléments de Té- ratologie,' 1811, p. 126. 52 Die Getreidearten,' 1941, s. 208. I have modified a few of Metzger's state- ments in accordance with those made by Bonafous in his great work, Hist. Nat. du Maïs,' 1836. CHAP. IX. 387 MAIZE. 53 are coloured—white, pale-yellow, orange, red, violet, or elegantly streaked with black; and in the same ear there are sometimes seeds of two colours. In a small collection I found that a single grain of one variety nearly equalled in weight seven grains of another variety. The shape of the seed varies greatly, being very flat, or nearly globular, or oval; broader than long, or longer than broad; without any point, or produced into a sharp tooth, and this tooth is sometimes recurved. One variety (the rugosa of Bonafous) has its seeds curiously wrinkled, giving to the whole ear a singular appearance. Another variety (the cymosa of Bon.) carries its ears so crowded together that it is called maïs à bouquet. The seeds of some varieties contain much glucose instead of starch. Male flowers sometimes appear amongst the female flowers, and Mr. J. Scott has lately observed the rarer case of female flowers on a true male panicle, and likewise hermaphrodite flowers. 54 Azara de- scribes 65 a variety in Paraguay the grains of which are very tender, and he states that several varieties are fitted for being cooked in various ways. The varieties also differ greatly in precocity, and have different powers of resisting dryness and the action of violent wind.58 Some of the foregoing differences would certainly be con- sidered of specific value with plants in a state of nature. Le Comte Ré states that the grains of all the varieties which he cultivated ultimately assumed a yellow colour. But Bonafous 57 found that most of those which he sowed for ten consecutive years kept true to their proper tints; and he adds that in the valleys of the Pyrenees and on the plains of Piedmont a white maize has been cultivated for more than a century, and has undergone no change. The tall kinds grown in southern latitudes, and therefore exposed to great heat, require from six to seven months to ripen their seed; whereas the dwarf kinds, grown in northern and colder climates, require only from three to four months.58 Peter Kalm,59 who par- ticularly attended to this plant says that in the United States, in proceeding from south to north, the plants steadily diminish in bulk. Seeds brought from lat. 37° in Virginia, and sown in lat. 43°-44° in New England, produce plants which will not ripen their seed, or ripen them with the utmost difficulty. So it is with seed carried from New England to lat. 45°-47° in Canada. By taking p. 31. 53 Godron, 'De l'Espèce,' tom. ii. p. 80; Al. De Candolle, idem, p. 951. B4 Transact. Bot. Soc. of Edinburgh, vol. viii. p. 60. 55 Voyages dans l'Amérique Méri- dionale,' tom. i. p. 147. 68 Bonafous' Hist. Nat. du Mais,' 57 Idem, p. 31. 58 Metzger, Getreidearten,'s. 206. 59 Description of Maize,' by P. Kalm, 1752, in Swedish Acts,' vol. iy. I have consulted an old English MS. trang- lation, 388 CHAP. IX. CEREAL PLANTS. great care at first, the southern kinds after some years' culture ripen their seed perfectly in their northern homes, so that this is an ana- logous case with that of the conversion of summer into winter wheat, and conversely. When tall and dwarf maize are planted together, the dwarf kinds are in full flower before the others have produced a single flower; and in Pennsylvania they ripen their seed six weeks earlier than the tall maize. Metzger also mentions a European maize which ripens its seed four weeks earlier than another European kind. With these facts, so plainly showing inherited acclimatisation, we may readily believe Kalm, who states that in North America maize and some other plants have gradually been cultivated further and further northward. All writers agree that to keep the varieties of maize pure they must be planted separately so that they shall not cross. The effects of the climate of Europe on the American varieties is highly remarkable. Metzger obtained seed from various parts of America, and cultivated several kinds in Germany. I will give an abstract of the changes observed 60 in one case, namely, with a tall kind (Breit-korniger mays, Zea altissima) brought from the warmer parts of America. During the first year the plants were twelve feet high, and few seeds were perfected; the lower seeds in the ear kept true to their proper form, but the upper seeds became slightly changed. In the second generation the plants were from nine to ten feet in height, and ripened their seed better; the depression on the outer side of the seed had almost disappeared, and the original beautiful white colour had become duskier. Some of the seeds had even become yellow, and in their now rounded form they approached common European maize. In the third generation nearly all re- semblance to the original and very distinct American parent-form was lost. In the sixth generation this maize perfectly resembled a European variety, described as the second sub-variety of the fifth race. When Metzger published his book, this variety was still cultivated near Heidelberg, and could be distinguished from the common kind only by a somewhat more vigorous growth. Analo- gous results were obtained by the cultivation of another American race, the "white-tooth corn," in which the tooth nearly disappeared even in the second generation. A third race, the “chicken-corn, did not undergo so great a change, but the seeds became less polished and pellucid. These facts afford the most remarkable instance known to me of the direct and prompt action of climate 60 Getreidearten,' s. 208. CHAP. IX. 389 CULINARY PLANTS : CABBAGES. on a plant. It might have been expected that the tall- ness of the stem, the period of the vegetation, and the ripening of the seed, would have been thus affected; but it is a much more surprising fact that the seeds should have undergone so rapid and great a change. As, how- ever, flowers, with their product the seed, are formed by the metamorphosis of the stem and leaves, any modifi- cation in these latter organs would be apt to extend, through correlation, to the organs of fructification. Cabbage (Brassica oleracea).-Every one knows how greatly the various kinds of cabbage differ in appearance. In the island of Jer- sey, from the effects of particular culture and of climate, a stalk has grown to the height of sixteen feet, and “had its spring shoots at the top occupied by a magpie's nest:" the woody stems are not unfrequently from ten to twelve feet in height, and are there used as rafters 61 and as walking-sticks. We are thus reminded that in certain countries plants belonging to the generally herbaceous order of the Cruciferæ are developed into trees. Every one can appreciate the difference between green or red cabbages with great single heads; Brussel-sprouts with numerous little heads; broccolis and cauliflowers with the greater number of their flowers in an aborted condition, incapable of producing seed, and borne in a dense corymb instead of an open panicle; savoys with their blistered and wrinkled leaves; and borecoles and kales, which come nearest to the wild pa- rent-form. There are also various frizzled and laciniated kinds, some of such beautiful colours that Vilmorin in his Catalogue of 1851 enumerates ten varieties, valued solely for ornament, which are propagated by seed. Some kinds are less commonly known, such as the Portuguese Couve Tronchuda, with the ribs of its leaves greatly thickened ; and the Kohlrabi or choux-raves, with their stems enlarged into great turnip-like masses above the ground; and the recently formed new race 62 of choux-raves, already including nine sub-varieties, in which the enlarged part lies beneath the ground like a turnip. Although we see such great differences in the shape, size, colour, arrangement, and manner of growth of the leaves and stem, and of 61 Cabbage Timber,' 'Gardener's Chron., '1556, p. 744, quoted from Hook- er's Journal of Botany,' A walking- stick made from a cabbage-stalk is ex- hibited in the Museum at Kew. 62 Journal de la Soc. Imp. d'Horti- culture,' 1855, p. 254, quoted from "Gar- tenflora,' Ap. 1855. 390 CHAP. IX CULINARY PLANTS. the flower-stems in the broccoli and cauliflower, it is remarkable that the flowers themselves, the seed-pods, and seeds, present ex- tremely slight differences or none at all.63 I compared the flowers of all the principal kinds; those of the Couve Tronchuda are white and rather smaller than in common cabbages; those of the Ports- mouth broccoli have narrower sepals, and smaller, less elongated petals; and in no other cabbage could any difference be detected. With respect to the seed-pods, in the purple Kohlrabi alone, do they differ, being a little longer and narrower than usual. I made a col- lection of the seeds of twenty-eight different kinds, and most of them were undistinguishable; when there was any difference it was ex- cessively slight; thus, the seeds of various broccolis and cauliflow- ers, when seen in mass, are a little redder; those of the early green Ulm savoy are rather smaller; and those of the Breda kail slightly larger than usual, but not larger than the seeds of the wild cabbage from the coast of Wales. What a contrast in the amount of differ- ence is presented if, on the one hand, we compare the leaves and stems of the various kinds of cabbage with their flowers, pods, and seeds, and on the other hand the corresponding parts in the varieties of maize and wheat ! The explanation is obvious; the seeds alone are valued in our cereals, and their variations have been selected ; whereas the seeds, seed-pods, and flowers have been utterly neglect- ed in the cabbage, whilst many useful variations in their leaves and stems have been noticed and preserved from an extremely remote period, for cabbages were cultivated by the old Celts.64 It would be useless to give a classified description 65 of the nume- rous races, sub-races, and varieties of the cabbage; but it may be mentioned that Dr. Lindley has lately proposed 66 a system founded on the state of development of the terminal and lateral leaf-buds, and of the flower-buds. Thus, I. All the leaf-buds active and open, as in the wild-cabbage, kail, &c. II. All the leaf-buds active, but forming heads, as in Brussel-sprouts, &c. III. Terminal leaf-bud alone active, forming a head as in common cabbages, savoys, &c. IV. Terminal leaf-bud alone active and open, with most of the flowers abortive and succulent, as in the cauliflower and broccoli. V. All the leaf-buds active and open, with most of the flowers abor- tive and succulent, as in the sprouting-broccoli. This latter vari- ety is a new one, and bears the same relation to common broccoli, as 63 Godron, De l'Espèce,' tom. ii. p. 52; Metzger, Syst. Beschreibung der Kult. Kohlarten,' 1833, s. 6. 64 Regnier, De l'Economie Publique des Celtes,' 1818, p. 433. 65 See the elder De Candolle, in Transact. of Hort. Soc.,' vol. v.; and Metzger 'Kohlarten,' &c. 68 Gardener's Chronicle,' 1859, p. 992. CHAP. IX. 391 CABBAGES. Brussel-sprouts do to common cabbages; it suddenly appeared in a bed of common broccoli, and was found faithfully to transmit its newly-acquired and remarkable characters. The principal kinds of cabbage existed at least as early as the six- teenth century,67 so that numerous modifications of structure have been inherited for a long period. This fact is the more remarkable as great care must be taken to prevent the crossing of the different kinds. To give one proof of this : I raised 233 seedlings from cab- bages of different kinds, which had purposely been planted near each other, and of the seedlings no less than 155 were plainly deteriora- ted and mongrelized ; nor were the remaining 78 all perfectly true. It may be doubted whether many permanent varieties have been formed by intentional or accidental crosses; for such crossed plants are found to be very inconstant. One kind, however, called “Cot- tager's Kale," has lately been produced by crossing common kale and Brussel-sprouts, recrossed with purple broccoli, 8 and is said to be true, but plants raised by me were not nearly so constant in character as any common cabbage. Although most of the kinds keep true if carefully preserved from crossing, yet the seed-beds must be yearly examined, and a few seedlings are generally found false; but even in this case the force of inheritance is shown, for, as Metzger has remarked 69 when speaking of Brussel-sprouts, the variations generally keep to their "unter art," or main race. But in order that any kind may be truly propagated there must be no great change in the conditions of life; thus cabbages will not form heads in hot coun- tries, and the same thing has been observed with an English variety grown during an extremely warm and damp autumn near Paris.70 Extremely poor soil also affects the characters of certain varieties. Most authors believe that all the races are descended from the wild cabbage found on the western shores of Europe ; but Alph. De Candolle 71 forcibly argues on historical and other grounds that it is more probable that two or three closely allied forms, generally ranked as distinct species, still living in the Mediterranean region, are the parents, now ali commingled together, of the various culti- vated kinds. In the same manner as we have often seen with do- mesticated animals, the supposed multiple origin of the cabbage 67 Alph. De Candolle, 'Géograph. Bot., pp. S12 and 989. 88 Gardener's Chron.,' Feb. 1858, p. 129. 69 Kohlarten,' s. 22. 70 Godron, De l'Espèce,' tom. ii. p. 52; Metzger, 'Kohlarten,' s. 22. 71 Géograph. Bot.,' p. 840. 392 CHAP. IX. CULINARY PLANTS. throws no light on the characteristic differences between the cul- tivated forms. If our cabbages are the descendants of three or four distinct species, every trace of any sterility which may origi- nally have existed between them is now lost, for none of the varieties can be kept distinct without scrupulous care to prevent intercross- ing The other cultivated forms of the genus Brassica are descended, according to the view adopted by Godron and Metzger,"2 from two species, B. napus and rapa; but according to other botanists from three species; whilst others again strongly suspect that all these forms, both wild and cultivated, ought to be ranked as a single species. Brassica napus has given rise to two large groups, name ly, Swedish turnips (by some believed to be of hybrid origin) 73 and Colzas, the seeds of which yield oil. Brassica rapa (of Koch) has also given rise to two races, namely, common turnips and the oil giving rape. The evidence is unusually clear that these latter plants, though so different in external appearance, belong to the same species; for the turnip has been observed by Koch and Go- dron to lose its thick roots in uncultivated soil, and when rape and turnips are sown together they cross to such a degree that scarcely a single plant comes true.74 Metzger by culture converted the bien- nial or winter rape into the annual or summer rape varieties which have been thought by some authors to be specifically distinct.15 In the production of large, fleshy, turnip-like stems, we have a case of analogous variation in three forms which are generally considered as distinct species. But scarcely any modification seems so easily acquired as a succulent enlargement of the stem or root- that is a store of nutriment laid up for the plant's own future use. We see this in our radishes, beet, and in the less generally known "turnip-rooted” celery, and in the finocchio or Italian variety of the common fennel. Mr. Buckman has lately proved by his interesting experiments how quickly the roots of the wild parsnip can be en- larged, as Vilmorin formerly proved in the case of the carrot. 76 72 Godron, De l'Espèce,' tom. ii. p. 51; Metzger, Kohlarten,' s. 10. 73 Gardener's Chron. and Agricult. Gazette,' 1856, p. 729. 74 Gardener's Chron. and Agricult. Gazette,' 1855, p. 730. 75 Metzger, 'Kohlarten,' s. 51. 76 These experiments by Vilmorin have been quoted by many writers. An emi- nent botanist, Prof. Decaisne, has lately expressed doubts on the subject from his own negative results, but these cannot be valued equally with positive results. On the other hand, M. Carrière has lately stated (Gard. Chronicle,' 1865, p. 1154) that he took seed from a wild carrot, growing far from any cultivated land, and even in the first generation the roots of his seedlings differed in being spindle-shaped, longer, softer and less fibrous than those of the wild plant. From these seedlings he raised several distinct varieties. CHAP. IX. 393 PEAS. This latter plant, in its cultivated state, differs in scarcely any character from the wild English species, except in general luxu- riance and in the size and quality of its roots; but in the root ten varieties, differing in colour, shape, and quality, are cultivated in England, and come true by seed. Hence, with the carrot, as in so many other cases, for instance with the numerous varieties and sub-varieties of the radish, that part of the plant which is valued by man, falsely appears alone to have varied. The truth is that variations in this part alone have been selected; and the seedlings inheriting a tendency to vary in the same way, analogous modifica- tions have been again and again selected, until at last a great amount of change has been effected. Pea (Pisum sativum).- Most botanists look at the garden-pea as specifically distinct from the field-pea (P. arvense). The latter ex- ists in a wild state in Southern Europe ; but the aboriginal parent of the garden-pea has been found by one collector alone, as he states, in the Crimea.78 Andrew Knight crossed, as I am inforned by the Rev. A. Fitch, the field-pea with a well-known garden variety, the Prussian pea, and the cross seems to have been perfectly fertile. Dr. Alefeld has recently studied 19 the genus with care, and, after having cultivated about fifty varieties, concludes that they all cer- tainly belong to the same species. It is an interesting fact already alluded to, that, according to 0. Heer, the peas found in the lake habitations of Switzerland of the Stone and Bronze ages, belong to an extinct variety, with exceedingly small seeds, allied to P. ar- vense, or field-pea. The varieties of the cominon garden-pea are numerous, and differ considerably from each other. For compari- son I planted at the same time forty-one English and French varie- ties, and in this one case I will describe minutely their differences. The varieties differ greatly in height.-namely from between 6 and 12 inches to 8 feet, 81—in manner of growth, and in period of matu- rity. Some varieties differ in general aspect even while only two or three inches in height. The stems of the Prussian pea are much branched. The tall kinds have larger leaves than the dwarf kinds, but not in strict proportion to their height:-Hairs' Dwarf Monmouth has very large leaves, and the Pois nain hatif, and the 77 Loudon's Encyclop. of Gardening,' p. 835. 78 Alph. De Candolle, 'Géograph. Bot.,' 960. Mr. Bentham (Hort. Journal,' vol. ix. (1855), p. 141) believes that garden and field peas belong to the same spe- cies, and in this respect he differs from Dr. Targioni. 79 Botanische Zeitung,' 1860, s. 204. 80 Die Pflanzen der Pfahlbauten,' 1866, s. 23. 81 A variety called the Rouncival at- tains this height, as is stated by Mr. Gordon in Transact. Hort. Soc.,' (2nd series), vol. i., 1835, p. 374, from wbich paper I have taken some facts. 394 CHAP. IX. CULINARY PLANTS. moderately tall Blue Prussian, have leaves about two-thirds of the size of the tallest kind. In the Danecroft the leaflets are rather small and a little pointed; in the Queen of Dwarfs rather rounded ; and in the Queen of England broad and large. In these three peas the slight differences in the shape of the leaves are accompanied by slight differences in colour. In the Pois géant sans parchemin, which bears purple flowers, the leaflets in the young plant are edged with red; and in all the peas with purple flowers the stipules are marked with red. In the different varieties, one or two, or several flowers in a small cluster, are borne on the same peduncle ; and this is a difference which with some of the Leguminosa is considered of specific value. In all the varieties the flowers closely resemble each other except in colour and size. They are generally white, sometimes purple, but the colour is inconstant even in the same variety. In Warner's Emperor, which is a tall kind, the flowers are nearly double the size of those of the Pois nain hatif, but Hairs' Dwarf Monmouth, which has large leaves, likewise has large flowers. The calyx in the Victoria Marrow is large, and in Bishop's Long Pod the sepals are rather narrow. In no other kind is there any difference in the flower. The pods and seeds, which with natural species afford such con- stant characters, differ greatly in the cultivated varieties of the pea; and these are the valuable, and consequently the selected parts. Sugar peas, or Pois sans parchemin, are remarkable from their thin pods, which, whilst young, are cooked and eaten whole; and in this group, whichi according to Mr. Gordon includes eleven sub- varieties, it is the pod which differs most : thus, Lewis's Negro- podded pea has a straight, broad, smooth, and dark-purple pod, with the husk not so thin as in the other kinds; the pod of another variety is extremely bowed; that of the Pois géant is much pointed at the extremity; and in the variety " à grands cosses" the peas are seen through the husk in so conspicuous a manner that the pod, especially when dry, can hardly at first be recognised as that of a pea. In the ordinary varieties the pods also differ much in size ;-in colour, that of Woodford's Green Marrow being bright-green when dry, instead of pale brown, and that of the purple-podded pea being expressed by its name;—in smoothness, that of Danecroft being re- markably glossy, whereas that of the Ne plus ultra is rugged ;- in being either nearly cylindrical, or broad and flat ;-in being pointed at the end as in Thurston's Reliance, or much truncated as in the American Dwarf. In the Auvergne pea the whole end of the pod is bowed upwards. In the Queen of the Dwarfs and in Scimitar peas the pod is almost elliptic in shape. I here give drawings of the four most distinct pods produced by the plants cultivated by me. CHAP. IX. 395 PEAS. In the pea itself we have every tint between almost pure white, brown, yellow, and intense green ; in the varieties of the sugar peas I. 11. TIL. IV. a 6 с a Fig. 41.- Pods and Peas. I. Queen of Dwarfs. II. American Dwarf. III. Thurs- ton's Reliance. IV. Pois Géant sans parchemin. a. Dan O'Rourke Pea. 6. Queen of Dwarfs Pea. c. Knight's Tall White Marrow. d. Lewis's Negro Pea. we have these same tints, together with red passing through fine purple into a dark chocolate tint. These colours are either uniform 396 CHAP. IX. CULINARY PLANTS. or distributed in dots, striæ, or moss-like marks; they depend in some cases on the colour of the cotyledons seen through the skin, and in other cases on the outer coats of the pea itself. In the dif- ferent varieties the pods contain, according to Mr. Gordon, from eleven or twelve to only four or five peas. The largest peas are nearly twice as much in diameter as the smallest ; and the latter are not always borne by the most dwarfed kinds. Peas differ much in shape, being smooth and spherical, smooth and oblong, nearly oval in the Queen of Dwarfs, and nearly cubical and crumpled in many of the larger kinds. With respect to the value of the differences between the chief varieties, it cannot be doubted that, if one of the tall Sugar-peas, with purple flowers, thin-skinned pods of an extraordinary shape, including large, dark-purple peas, grew wild by the side of the lowly Queen of the Dwarfs, with white flowers, greyish-green, rounded leaves, scimitar-like pods, containing oblong, smooth, pale- coloured peas, which became mature at a different season; or by the side of one of the gigantic sorts, like the Champion of England, with leaves of great size, pointed pods, and large, green, crumpled, almost cubical peas,-all three kinds would be ranked as indispu- tably distinct species. Andrew Knight 52 has observed that the varieties of peas keep very true, because they are not crossed by insects. As far as the fact of keeping true is concerned, I hear from Mr. Masters of Can- terbury, well known as the originator of several new kinds, that certain varieties have remained constant for a considerable time, - for instance, Knight's Blue Dwarf, which came out about the year 1820.43 But the greater number of varieties have a singularly short existence: thus Loudon remarks 64 that "sorts which were highly approved in 1821, are now, in 1833, nowhere to be found," and on comparing the lists of 1833 with those of 1855, I find that nearly all the varieties have changed. Mr. Masters informs me that the nature of the soil causes some varieties to lose their character. As with other plants, certain varieties can be propagated truly, whilst others show a determined tendency to vary; thus two peas differing in shape, one round and the other wrinkled, were found by Mr. Mas- ters within the same pod, but the plants raised from the wrinkled kind always evinced a strong tendency to produce round peas. Mr. Masters also raised from a plant of another variety four distinct sub-varieties, which bore blue and round, white and round, blue and 82 Phil. Transact.,' 1799, p. 196. 83 Gardener's Magazine,' vol. i., 1826, 84 'Encyclopædia of Gardening,' p. 823. P. 153. CHAP. IX. 397 PEAS. wrinkled, and white and wrinkled peas; and although he sowed these four varieties separately during several successive years, each kind always reproduced all four kinds mixed together! With respect to the varieties not naturally intercrossing, I have ascertained that the pea, which in this respect differs from some other Leguminosæ, is perfectly fertile without the aid of insects. Yet I have seen humble-bees whilst sucking the nectar depress the keel-petals, and become so thickly dusted with pollen, that some could hardly fail to be left on the stigma of the next flower which was visited. I have made inquiries from several great raisers of seed-peas, and I find that but few sow them separately; the majority take no precaution; and it is certain, as I have myself found, that true seed may be saved during at least several generations from distinct varieties growing close together.86 Under these circum- stances, Mr. Fitch raised, as he informs me, one variety for twenty years, which always came true. From the analogy of kidney- beans I should have expected 86 that occasionally, perhaps at long intervals of time, when some slight degree of sterility had supervened from long-continued self-fertilisation, varieties thus growing near each other would have crossed ; and I shall give in the eleventh chapter two cases of distinct varieties which sponta- neously intercrossed, as shown in a manner hereafter to be ex- plained) by the pollen of the one variety having acted directly on the seeds of the other. Whether the incessant supply of new varieties is partly due to such occasional and accidental crosses, and their fleeting existence to changes of fashion; or again, whether the varieties which arise after a long course of continued self-ferti- lisation are weakly and soon perish, I cannot even conjecture. It may, however, be noticed that several of Andrew Knight's varie- ties, which have endured longer than most kinds, were raised towards the close of the last century by artificial crosses; some of them, I believe, were still, in 1860, vigorous; but now, in 1865, a writer, speaking of Knight's four kinds of marrows, says, they have acquired a famous history, but their glory has departed. With respect to Beans (Faba vulgaris), I will say but little. Dr. Alefeld has given 68 short diagnostic characters of forty varieties. Every one who has seen a collection must have been struck with the great difference in shape, thickness, proportional length and 85 See Dr. Anderson to the same effect in the Bath Soc. Agricultural Papers, vol. iv. p. 87. 86 I have published full details of ex- periments on this subject in the Gar- dener's Chronicle,' 1857, Oct. 25th. 87 Gardener's Chronicle, 1865, p. 387. 88 Bonplandia,' x., 1862, s. 348. 398 CHAP. IX. CULINARY PLANTS. breadth, colour, and size which beans present. What a contrast between a Windsor and Horse-bean! As in the case of the pea, our existing varieties were preceded during the Bronze age in Switzerland by a peculiar and now extinct variety producing very small beans.89 Potato (Solanum tuberosum).—There is little doubt about the parentage of this plant; for the cultivated varieties differ extremely little in general appearance from the wild species, which can be recognised in its native land at the first glance.90 The varieties cultivated in Britain are numerous; thus Lawson' gives a descrip- tion of 175 kinds. I planted eighteen kinds in adjoining rows; their stems and leaves differed but little, and in several cases there was as great an amount of difference between the individuals of the same variety as between the different varieties. The flowers vary in size, and in colour between white and purple, but in no other respect, except that in one kind the sepals were somewhat elongated. One strange variety has been described which always produces two sorts of flowers, the first double and sterile, the second single and fertile. The fruit orberries also differ, but only in a slight degree.93 The tubers, on the other hand, present a wonderful amount of diversity. This fact accords with the principle that the valuable and selected parts of all cultivated productions present the greatest amount of modification. They differ much in size and shape, being globular, oval, flattened, kidney-like, or cylindrical. One variety from Peru is described 94 as being quite straight, and at least six inches in length, though no thicker than a man's finger. The eyes or buds differ in form, position, and colour. The manner in which the tubers are arranged on the so-called roots is different; thus in the gurken-kartoffeln they form a pyramid with the apex down- wards, and in another variety they bury themselves deep in the ground. The roots themselves run either near the surface or deep in the ground. The tubers also differ in smoothness and colour, being externally white, red, purple, or almost black, and internally white, yellow, or almost black. They differ in flavour and quality, Chronicle,' 1845, p. 790. 89 0. Heer, Die Pflanzen der Pfahl- bauten,' 1866, s. 22. 90 Darwin, 'Journal of Researches, 1945, p. 285. 91 Synopsis of the vegetable products of Scotland, quoted in Wilson's 'British Farming,' p. 317. 92 Sir G. Mackenzie, in Gardener's 98 Putsche und Vertuch, Versuch einer Monographie der Kartoffeln,'1819, s. 9, 15. See also Dr. Anderson's 'Re- creations in Agriculture,' vol. iv. p. 325. 94. Gardener's Chronicle,' 1862, p. 1052. CHAP. IX. 399 POTATOES. being either waxy or mealy; in their period of maturity, and in their capacity for long preservation. As with many other plants which have been long propagated by bulbs, tubers, cuttings, &c., by which means the same individual is exposed during a length of time to diversified conditions, seedling potatoes generally display innumerable slight differences. Several varieties, even when propagated by tubers, are far from constant, as will be seen in the chapter on Bud-variation. Dr. Anderson 95 procured seed from an Irish purple potato, which grew far from any other kind, so that it could not at least in this generation have been crossed, yet the many seedlings varied in almost every possible respect, so that “scarcely two plants were exactly alike.” Some of the plants which closely resembled each other above ground, pro- duced extremely dissimilar tubers, and some tubers which exter- nally could hardly be distinguished, differed widely in quality when cooked. Even in this case of extreme variability, the parent-stock had some influence on the progeny, for the greater number of the seedlings resembled in some degree the parent Irish potato. Kid- ney potatoes must be ranked amongst the most highly cultivated and artificial races; yet their peculiarities can often be strictly pro- pagated by seed. A great authority, Mr. Rivers, 96 states that "seed- lings from the ash-leaved kidney always bear a strong resemblance to their parent. Seedlings from the fluke-kidney are still more remarkable for their adherence to their parent-stock, for, on closely observing a great number during two seasons, I have not been able to observe the least difference either in earliness, productiveness, or in the size or shape of their tubers." 05 Bath Society Agricult. Papers, vol. v. p. 127. And Recreations in Agriculture,' vol. v. p. 86. 96 Gardener's Chronicle,' 1863, p. 613. 400 CHAP. X. FRUITS. CHAPTER X. PLANTS continued - FRUITS - ORNAMENTAL TREES – FLOWERS. FRUITS. — GRAPES — VARY IN ODD AND TRIFLING PARTICULARS. MULBERRY. THE ORANGE GROUP SINGULAR RESULTS FROM CROSSING. PEACH AND NECTARINE - BUD-VARIATION ANALOGOUS VARIATION RELATION TO THE ALMOND. APRICOT. - PLUMS — VARIATION IN THEIR STONES. CHER- RIES SINGULAR VARIETIES OF. APPLE. PEAR. STRAWBERRY -INTERBLENDING OF THE ORIGINAL FORMS.- GOOSEBERRY STEADY INCREASE IN SIZE OF THE FRUIT VARIETIES OF. WALNUT - NUT. - CUCURBITACEOUS PLANTS - WONDERFUL VARIATION OF. ORNAMENTAL TREES — THEIR VARIATION IN DEGREE AND KIND - ASH-TREE.— SCOTCH-FIR - HAWTHORN. FLOWERS — MULTIPLE ORIGIN OF MANY KINDS — VARIATION IN CONSTITUTIONAL PECULIARITIES · KIND OF VARIATION. ROSES — SEVERAL SPECIES CULTIVATED. PANSY. - DAH- LIA. - HYACINTI — HISTORY AND VARIATION OF. The Vine (Vitis vinifera).—THE best authorities consider all our grapes as the descendants of one species which now grows wild in western Asia, which grew during the Bronze-age wild in Italy,' and which has recently been found fossil in a tufaceous deposit in the south of France. Some authors, however, entertain much doubt about the single parentage of our cultivated varieties, owing to the number of semi-wild forms found in Southern Europe, especially as de- scribed by Clemente, in a forest in Spain ; but as the grape sows 1 Heer, 'Pflanzen der Pfahlbauten,' 1866, s. 28. 2 Alph. De Candolle, 'Géograph. Bot.,' p. 872; Dr. A. Targioni-Tozzetti, in Jour. Hort. Soc.,' vol. ix. p. 133. For the fossil vine found by Dr. G. Planchon, see Nat. Hist. Review,' 1865, April, p. 224. 3 Godron, 'De l'Espèce,' tom. ii. p. 100. CHAP. X. 401 VINES. itself freely in Southern Europe, and as several of the chief kinds transmit their characters by seed, whilst others are extremely variable, the existence of many different escaped forms could hardly fail to occur in countries where this plant has been cultivated from the remotest antiquity. That the vine varies much when propaga- ted by seed, we may infer from the largely increased number of varieties since the earlier historical records. New hot-house varie- ties are produced almost every year; for instance, a golden-coloured variety has been recently raised in England from a black grape without the aid of a cross. Van Mons. reared a multitude of va- rieties from the seed of one vine, which was completely separated from all others, so that there could not, at least in this generation, have been any crossing, and the seedlings presented " les analogues de toutes les sortes," and differed in almost every possible character, both in the fruit and foliage. The cultivated varieties are extremely numerous; Count Odart says that he will not deny that there may exist throughout the world 700 or 800, perhaps even 1000 varieties, but not a third of these have any value. In the Catalogue of fruit cultivated in the Horticul- tural Gardens of London, published in 1842, 99 varieties are enu- merated. Wherever the grape is grown many varieties occur: Pal- las describes 24 in the Crimea, and Burnes mentions 10 in Cabool. The classification of the varieties has much perplexed writers, and Count Odart is reduced to a geographical system ; but I will not enter on this subject, nor on the many and great differences between the varieties. I will merely specify a few curious and trifling pecu- liarities, all taken from Odart's highly esteemed work, for the sake of showing the diversified variability of this plant. Simon has classed grapes into two main divisions, those with downy leaves and those with smooth leaves, but he admits that in one variety, namely the Rebazo, the leaves are either smooth or downy; and Odart (p. 70) states that some varieties have the nerves alone, and other varieties their young leaves, downy, whilst the old ones are smooth. The Pedro-Ximenes grape (Odart, p. 397) presents a peculiarity by which it can be at once recognised amongst a host of other varieties, name- ly, that when the fruit is nearly ripe the nerves of the leaves or even the whole surface becomes yellow. The Barbera d'Asti is well marked by several characters (p. 426), amongst others, “ by some of 4 See an account of M. Vibert's ex- periments, by Alex. Jordan, in Mém. de l'Acad. de Lyon,' tom. ii., 1852, P. 108 6. Gardner's Chronicle,'1864, p. 488. 6 Arbres Fruitiers,' 1936, tom. ii. p. 290. 7 Odart, 'Ampelographie Universelle, 1849. 402 CHAP. X. FRUITS. the leaves, and it is always the lowest on the branches, suddenly be- coming of a dark red colour.” Several authors in classifying grapes have founded their main divisions on the berries being either round or oblong; and Odart admits the value of this character; yet there is one variety, the Maccabeo (p. 71), which often produces small round, and large oblong, berries in the same bunch. Certain grapes called Nebbiolo (p. 429) present a constant character, sufficient for their recognition, namely, “the slight adherence of that part of the pulp which surrounds the seeds to the rest of the berry, when cut through transversely." A Rhenish variety is mentioned (p. 228) which likes a dry soil; the fruit ripens well, but at the moment of maturity, if much rain falls, the berries are apt to rot; on the other hand, the fruit of a Swiss variety (p. 243) is valued for well sustain- ing prolonged humidity. This latter variety sprouts late in the spring, yet matures its fruit early; other varieties (p. 362) have the fault of being too much excited by the April sun, and in consequence suffer from frost. A Styrian variety (p. 254) has brittle foot-stalks, so that the clusters of fruit are often blown off; this variety is said to be particularly attractive to wasps and bees. Other varieties have tough stalks, which resist the wind. Many other variable charac- ters could be given, but the foregoing facts are sufficient to show in how many small structural and constitutional details the vine varies. During the vine disease in France certain whole groups of varieties have suffered far more from mildew than others. Thus “the group of the Chasselas, so rich in varieties, did not afford a sin- gle fortunate exception ;" certain other groups suffered much less; the true old Burgundy, for instance, was comparatively free from disease, and the Carminat likewise resisted the attack. The Ameri- can vines, which belong to a distinct species, entirely escaped the disease in France; and we thus see that those European varieties which best resist the disease must have acquired in a slight degree the same constitutional peculiarities as the American species. White Mulberry (Morus alba).-I mention this plant because it has varied in certain characters, namely, in the texture and quality of the leaves, fitting them to serve as food for the domesticated silk- worm, in a manner not observed with other plants; but this has arisen simply from such variations in the mulberry having been at- tended to, selected, and rendered more or less constant. M. de Qua- trefages' briefly describes six kinds cultivated in one valley in France: of these the amourouso produces excellent leaves, but is 8 M. Bouchardat, in Comptes Ren- dus,' Dec. 1st, 1851, quoted in Garden- er's Chron.,' 1852, p. 435. 9 Etudes sur les Maladies actuelles du Ver à Soie,' 1859, p. 321. CHAP. X. 403 ORANGE GROUP. rapidly being abandoned because it produces much fruit mingled with the leaves: the antofino yields deeply cut leaves of the finest quality, but not in great quantity: the claro is much sought for be- cause the leaves can be easily collected: lastly, the roso bears strong hardy leaves, produced in large quantity, but with the one incon- venience, that they are best adapted for the worms after their fourth moult. MM. Jacquemet-Bonnefont, of Lyon, however, remark in their catalogue (1862) that two sub-varieties have been confounded under the name of the roso, one having leaves too thick for the ca- terpillars, the other being valuable because the leaves can easily be gathered from the branches without the bark being torn. In India the mulberry has also given rise to many varieties. The Indian form is thought by many botanists to be a distinct species; but as Royle remarks,19 so many varieties have been produced by cultivation that it is difficult to ascertain whether they all belong to one species;" they are, as he adds, nearly as numerous as those of the silkworm. The Orange Group.–We here meet with great confusion in the specific distinction and parentage of the several kinds. Gallesio, 11 who almost devoted his life-time to the subject, considers that there are four species, namely, sweet and bitter oranges, lemons, and ci- trons, each of which has given rise to whole groups of varieties, monsters, and supposed hybrids. One high authority 12 believes that these four reputed species are all varieties of the wild Citrus medica, but that the shaddock (Citrus decumana), which is not known in a wild state, is a distinct species; though its distinctness is doubted by another writer “of great authority on such matters," namely, Dr. Buchanan Hamilton. Alph. De Candolle, 18 on the other hand-and there cannot be a more capable judge-advances what he considers sufficient evidence of the orange (he doubts whether the bitter and sweet kinds are specifically distinct), the lemon, and citron, having been found wild, and consequently that they are distinct. He men- tions two other forms caltivated in Japan and Java, which he ranks as undoubted species; he speaks rather more doubtfully about the shaddock, which varies much, and has not been found wild; and finally he considers some forms, such as Adam's apple and the ber- gamotte, as probably hybrids. 10 Productive Resources of India,' p. 130. 11 Traité du Citrus,' 1911. Teoria della Riproduzione Vegetale,' 1816. I quote chiefly from this second work. In 1839 Gallesio published in folio Gli Agrumi dei Giard. Bot. di Firenze,' in which he gives a curious diagram of the supposed relationship of all the forms. 12 Mr. Bentham, Review of Dr. A. Targioni-Tozzetti, 'Journal of Hort. Soc.,' vol. ix. p. 133. Géograph. Bot.,' p. 863. 136 104 CHAP. X FRUITS. I have briefly abstracted these opinions for the sake of showing those who have never attended to such subjects, how perplexed with doubt they are. It would, therefore, be useless for my purpose to give a sketch of the conspicuous differences between the several forms. Besides the ever-recurrent difficulty of determining whether forms found wild are truly aboriginal or are escaped seedlings, many of the forms, which must be ranked as varieties, transmit their cha- racters almost perfectly by seed. Sweet and bitter oranges differ in no important respect except in the flavour of their fruit, but Gallesio 24 is most emphatic that both kinds can be propagated by seed with absolute certainty. Consequently, in accordance with his simple rule, he classes them as distinct species; as he does sweet and bitter almonds, the peach and nectarine, &c. He admits, however, that the soft-shelled pine-tree produces not only soft-shelled but some hard-shelled seedlings, so that a little greater force in the power of inheritance would, according to this rule, raise the soft-shelled pine- tree into the dignity of an aboriginally created species. The posi- tive assertion made by Macfayden 15 that the pips of sweet oranges produce in Jamaica, according to the nature of the soil in which they are sown, either sweet or bitter oranges, is probably an error ; for M. Alph. De Candolle informs me that since the publication of his great work he has received accounts from Guiana, the Antilles, and Mauritius, that in these countries sweet oranges faithfully transmit their character. Gallesio found that the willow-leafed and the Little China oranges reproduced their proper leaves and fruit; but the seedlings were not quite equal in merit to their parents. The red- fleshed orange, on the other hand, fails to reproduce itself. Gallesio also observed that the seeds of several other singular varieties all reproduced trees having a peculiar physiognomy, but partly resem- bling their parent-forms. I can adduce another case: the myrtle- leaved orange is ranked by all authors as a variety, but is very dis- tinct in general aspect: in my father's greenhouse, during many years, it rarely yielded any seed, but at last produced one; and a tree thus raised was identical with the parent-form. Another and more serious difficulty in determining the rank of the several forms is that, according to Gallesio,16 they largely intercross without artificial aid ; thus he positively states that seeds taken from lemon-trees (C. lemonum) growing mingled with the citron (C. me- dica), which is generally considered as a distinct species, produced a graduated series of varieties between these two forms. Again, an 14 Teoria della Riproduzione,' pp. 52-57. 15 Hooker's Bot. Misc.,' vol. i. p. 302 ; vol. ii. p. 111. 16 Teoria della Riproduzione,' p. 53. CHAP. X. 405 ORANGE GROUP. Adam's apple was produced from the seed of a sweet orange, which grew close to lemons and citrons. But such facts hardly aid us in de- termining whether to rank these forms as species or varieties; for it is now known that undoubted species of Verbascum, Cistus, Primula, Salix, &c., frequently cross in a state of nature. If indeed it were proved that plants of the orange tribe raised from these crosses were even partially sterile, it would be a strong argument in favour of their rank as species. Gallesio asserts that this is the case; but he does not distinguish between sterility from hybridism and from the effects of culture; and he almost destroys the force of this state- ment by another, 17 namely, that when he impregnated the flowers of the common orange with the pollen taken from undoubted varie- ties of the orange, monstrous fruits were produced, which included "little pulp, and had no seeds, or imperfect seeds." In this tribe of plants we meet with instances of two highly re- markable facts in vegetable physiology: Gallesio 18 impregnated an orange with pollen from a lemon, and the fruit borne on the mother tree had a raised stripe of peel like that of a lemon both in colour and taste, but the pulp was like that of an orange and included only imperfect seeds. The possibility of pollen from one variety or species directly affecting the fruit produced by another variety or species, is a subject which I shall fully discuss in the following chapter. The second remarkable fact is that two supposed hybrids 19 (for their hybrid nature was not ascertained) between an orange and either a lemon or citron produced, on the same tree, leaves, flowers, and fruit of both pure parent-forms, as well as of a mixed or crossed nature. A bud taken from any one of the branches and grafted on another tree produces either one of the pure kinds or a capricious tree reproducing the three kinds. Whether the sweet lemon, which includes within the same fruit segments of differently flavoured pulp,20 is an analogous case, I know not. But to this subject I shall have to recur. I will conclude by giving from A. Risso 21 a short account of a very singular variety of the common orange. It is the “citrus aurantium fructu variabili," which on the young shoots produces rounded-oval leaves spotted with yellow, borne on petioles with heart-shaped wings; when these leaves fall off, they are succeeded by longer and narrower leaves, with undulated margins, of a pale-green colour 17 Gallesio, Teoria della Riprodu- zione,' p. 69. 18 Gallesio, idem, p. 67. 19 Gallesio, idem, pp. 75, 76. 20 Gardener's Chronicle,' 1841, p. 613. 21 Annales du Muséum,' tom. xx. p. 188. 406 CHAP. X. FRUITS, embroidered with yellow, borne on foot-stalks without wings. The fruit whilst young is pear-shaped, yellow, longitudinally striated, and sweet ; but as it ripens, it becomes spherical, of a reddish-yellow, and bitter. 1 2 3 5 6 7 8 Fig. 42.-Peach and Almond Stones, of natural size, viewed edgeways. 1. Common English Peach. 2. Double, crimson-flowered, Chinese Peach. 3. Chinese Honey Peach. 4. English Almond. 5. Barcelona Almond. 6. Malaga Almond. 7. Soft- shelled French Almond. S. Smyrna Almond. Peach and Nectarine (Amygdalus Persica).—The best authorities are nearly unanimous that the peach has never been found wild, CHAP. X. 407 PEACH AND NECTARINE. It was introduced from Persia into Europe a little before the Chris. tian era, and at this period few varieties existed. Alph. De Can- dolle, 22 from the fact of the peach not having spread from Persia at an earlier period, and from its not having pure Sanscrit or Hebrew names, believes that it is not an aboriginal of Western Asia, but came from the terra incognita of China. The supposition, however, that the peach is a modified almond which acquired its present cha- racter at a comparatively late period, would, I presume, account for these facts; on the same principle that the nectarine, the offspring of the peach, has few native names, and became known in Europe at a still later period. Andrew Knight,23 from finding that a seedling-tree, raised from a sweet almond fertilised by the pollen of a peach, yielded fruit quite like that of a peach, suspected that the peach-tree is a modified al- mond; and in this he has been followed by various authors.24 A first-rate peach, almost globular in shape, formed of soft and sweet pulp, surrounding a hard, much furrowed, and slightly-flattened stone, certainly differs greatly from an almond, with its soft, slight- ly furrowed, much flattened, and elongated stone, protected by a tough, greenish layer of bitter flesh. Mr. Bentham 2 has particular- ly called attention to the stone of the almond being so much more flattened than that of the peach. But in the several varieties of the almond, the stone differs greatly in the degree to which it is com- pressed, in size, shape, strength, and in the depth of the furrows, as may be seen in the accompanying drawings (Nos. 4 to 8) of such kinds as I have been able to collect. With peach-stones also Nos. 1 to 3) the degree of compression and elongation is seen to vary; so that the stone of the Chinese Honey-peach (fig. 3) is much more elongated and compressed than that of the (No. 8) Smyrna almond. Mr. Rivers of Sawbridgeworth, to whom I am indebted for some of the specimens above figured, and who has had such great horticul- tural experience, has called my attention to several varieties which connect the almond and the peach. In France there is a variety called the Peach-almond, which Mr. Rivers formerly cultivated, and which is correctly described in a French catalogue as being oval and 22 Géograph. Bot.' p. 882. 23 Transactions of Hort. Soc.,' vol. iii. p. 1, and vol. iv. p. 369, and note to p. 370. A coloured drawing is given of this hybrid 24 Gardener's Chronicle,' 1856, p. 532. A writer, it may be presumed Dr. Lindley, remarks on the perfect series which may be formed between the al. mond and the peach. Another high au- thority, Mr. Rivers, who has had such wide experience, strongly suspects ("Gar- dener's Chronicle,' 1863, p. 27) that peaches, if left to a state of nature, would in the course of time retrograde into thick- fleshed almonds. 25 Journal of Hort. Soc.,' vol. ix. p. 168. 408 CHAP. X. FRUITS. swollen, with the aspect of a peach, including a hard stone sur-. rounded by a fleshy covering, which is sometimes eatable 26 A re- markable statement by M. Luizet has recently appeared in the 'Re- vue Horticole,' 27 namely, that a Peach-almond, grafted on a peach, bore during 1863 and 1864 almonds alone, but in 1865 bore six peaches and no almonds. M. Carrière, in commenting on this fact, cites the case of a double-flowered almond which, after producing during several years almonds, suddenly bore for two years in suc- cession spherical fleshy peach-like fruits, but in 1865 reverted to its former state and produced large almonds. Again, as I hear from Mr. Rivers, the double-flowering Chinese peaches resemble almonds in their manner of growth and in their flowers; the fruit is much elongated and flattened, with the flesh both bitter and sweet, but not uneatable, and it is said to be of better quality in China. From this stage one small step leads us to such inferior peaches as are occasionally raised from seed. For in- stance, Mr. Rivers sowed a number of peach-stones imported from the United States, where they are collected for raising stocks, and some of the trees raised by him produced peaches which were very like almonds in appearance, being small and hard, with the pulp not softening till very late in the autumn. Van Mons 28 also states that he once raised from a peach-stone a peach having the aspect of a wild tree, with fruit like that of the almond. From inferior peaches, such as these just described, we may pass by small transitions, through clingstones of poor quality, to our best and more melting kinds. From this gradation, from the cases of sudden variation above recorded, and from the fact that the peach has not been found wild, it seems to me by far the most probable view, that the peach is the descendant of the almond, improved and modified in a marvel- lous manner. One fact, however, is opposed to this conclusion. A hybrid, raised by Knight from the sweet almond by the pollen of the peach, pro- duced flowers with little or no pollen, yet bore fruit, having been apparently fertilised by a neighbouring nectarine. Another hybrid from a sweet almond by the pollen of a nectarine produced during the first three years imperfect blossoms, but afterwards perfect flowers with an abundance of pollen. If this slight degree of ste- rility cannot be accounted for by the youth of the trees (and this 26 Whether this is the same variety as one lately mentioned ('Gard. Chron.' 1865, p. 1154) by M. Carrière under the name of Persica intermedia, I know not: this var. is said to be intermediate in nearly all its characters between the almond and peach; it produces during successive years very different kinds of fruit. 27 Quoted in "Gard. Chron.'1866, p. 800. 28 Quoted in Journal de la Soc. Imp. d'Horticulture,' 1855, p. 238. CHAP. X. PEACH AND NECTARINE. 409 often causes lessened fertility), or by the monstrous state of the flowers, or by the conditions to which the trees were exposed, these two cases would afford a strong argument against the peach being the descendant of the almond. Whether or not the peach has proceeded from the almond, it has certainly given rise to nectarines, or smooth peaches, as they are called by the French. Most of the varieties both of the peach and nectarine reproduce themselves truly by seed. Gallesio 29 says he has verified this with respect to eight races of the peach. Mr. Rivers 30 has given some striking instances from his own experience, and it is no- torious that good peaches are constantly raised in North America from seed. Many of the American sub-varieties come true or near- ly true to their kind, such as the white-blossom, several of the yel- low-fruited freestone peaches, the blood clingstone, the heath, and the lemon-clingstone. On the other hand, a clingstone peach has been known to give rise to a freestone. 31 In England it has been noticed that seedlings inherit from their parents flowers of the same size and colour. Some characters, however, contrary to what might have been expected, often are not inherited; such as the presence and form of the glands on the leaves. With respect to nectarines, both cling and freestones are known in North America to reproduce themselves by seed.33 In England the new white nectarine was a seedling of the old white, and Mr. Rivers 34 has recorded several similar cases. From this strong tendency to inheritance, which both peach and nectarine trees exhibit,-from certain slight consti- tutional differences 35 in their nature,--and from the great difference in their fruit both in appearance and flavour, it is not surprising, notwithstanding that the trees differ in no other respects and can- not even be distinguished, as I am informed by Mr. Rivers, whilst young, that they have been ranked by some authors as specifically distinct. Gallesio does not doubt that they are distinct; even Alph. De Candolle does not appear perfectly assured of their specific iden- tity; and an eminent botanist has quite recently 36 maintained that the nectarine "probably constitutes a distinct species. 29 Teoria della Riproduzione Vege- tale,' 1816, p. 86. 30 Gardener's Chronicle,' 1862, p. 1195. 31 Mr. Rivers, Gardener's Chronicle,' 1859, p. 774. 32 Downing, The Fruits of America,' 1845, pp. 475, 489, 492, 494, 496. See also F. Michaux, Travels in N. Ameri- ca' (Eng. translat.), p. 228. For similar cases in France see Godron, De l'Es- pèce,' tom. ii. p. 97. 33 Brickell's 'Nat. Hist, of N. Caro- lina,' p. 102, and Downing's Fruit Trees,' p. 505. 34 Gardener's Chronicle,' 1862, p. 1196. 35 The peach and nectarine do not suc- ceed equally well in the same soil : see Lindley's 'Horticulture,' p. 351. 36 Godron, 'De l'Espèce,' tom. ii. 1859, p. 97. 18 410 CHAP. X. FRUITS. Hence it may be worth while to give all the evidence on the origin of the nectarine. The facts in themselves are curious, and will hereafter have to be referred to when the important subject of bud- variation is discussed. It is asserted 97 that the Boston nectarine was produced from a peach-stone, and this nectarine reproduced itself by seed.38 Mr. Rivers states 39 that from stones of three distinct varie- ties of the peach he raised three varieties of nectarine; and in one of these cases no nectarine grew near the parent peach-tree. In an- other instance Mr. Rivers raised a nectarine from a peach, and in the succeeding generation another nectarine from this nectarine.40 Other such instances have been communicated to me, but they need not be given. Of the converse case, namely, of nectarine-stones yielding peach-trees (both free and clingstones), we have six undoubted in- stances recorded by Mr. Rivers; and in two of these instances the parent nectarines had been seedlings from other nectarines.41 With respect to the more curious case of full-grown peach-trees suddenly producing nectarines by bud-variation (or sports as they are called by gardeners), the evidence is superabundant; there is also good evidence of the same tree producing both peaches and necta- rines, or half and half fruit ;-by this term I mean a fruit with the one-half a perfect peach, and the other half a perfect nectarine. Peter Collinson in 1741 recorded the first case of a peach-tree pro- ducing a nectarine,12 and in 1766 he added two other instances. In the same work, the editor, Sir J. E. Smith, describes the more re- markable case of a tree in Norfolk, which usually bore both perfect nectarines and perfect peaches; but during two seasons some of the fruit were half-and-half in nature. Mr. Salisbury in 1808 43 records six other cases of peach-trees pro- ducing nectarines. Three of the varieties are named; viz., the Al- berge, Belle Chevreuse, and Royal George. This latter tree seldom failed to produce both kinds of fruit. He gives another case of a half-and-half fruit. At Radford in Devonshire 44 a clingstone peach, purchased as the Chancellor, was planted in 1815, and in 1824, after having previous- ly produced peaches alone, bore on one branch twelve nectarines; in 1825 the same branch yielded twenty-six nectarines, and in 1826 1859, p. 774; 1862, p. 1195; 1865, p. 1059; and Journal of Hort.,' 1866, p. 102. 87 Transact. Hort. Soc.,' vol. vi. p. 394. 38 Downing's 'Fruit Trees,' p. 502. 99 Gardener's Chronicle,' 1862, p. 1195. 40 Journal of Horticulture,' Feb. 6th, 1866, p. 102. 41 Mr. Rivers, in Gardener's Chron.,' 42 Correspondence of Linnæus, '1821, pp. 7, 8, 70. 43 Transact. Hort. Soc.,' vol. i. p. 103. 44 Loudon's "Gardener's Mag.,' 1826, vol. i. p. 471. CHAP. X. 411 PEACH AND NECTARINE. thirty-six nectarines together with eighteen peaches. One of the peaches was almost as smooth on one side as a nectarine. The nec- tarines were as dark as, but smaller than, the Elruge. At Beccles a Royal George peach 45 produced a fruit," three parts of it being peach and one part nectarine, quite distinct in appear- ance as well as in flavour.” The lines of division were longitudinal, as represented in the engraving. A nectarine-tree grew five yards from this tree. Professor Chapman states 16 that he has often seen in Virginia very old peach-trees bearing nectarines. A writer in the Gardener's Chronicle' says that a peach-tree planted fifteen years previously 47 produced this year a nectarine between two peaches; a nectarine-tree grew close by. In 1844 48 a Vanguard peach-tree produced, in the midst of its or- dinary fruit, a single red Roman nectarine. Mr. Calver is stated 49 to have raised in the United States a seed- ling peach which produced a mixed crop of both peaches and necta rines. Near Dorking 50 a branch of the Têton de Venus peach, which re- produces itself truly by seed, 51 bore its own fruit "so remarkable for its prominent point, and a nectarine rather smaller but well formed and quite round." The previous cases all refer to peaches suddenly producing nec- tarines, but at Carclew 52 the unique case occurred, of a nectarine- tree, raised twenty years before from seed and never grafted, pro- ducing a fruit half peach and half nectarine; subsequently it bore a perfect peach. To sum up the foregoing facts: we have excellent evidence of peach-stones producing nectarine-trees, and of nectarine-stones pro- ducing peach-trees,-of the same tree bearing peaches and necta- rines,—of peach-trees suddenly producing by bud-variation necta- rines (such nectarines reproducing nectarines by seed), as well as fruit in part nectarine and in part peach,-and lastly of one nec- tarine-tree first bearing half-and-half fruit, and subsequently true peaches. As the peach came into existence before the nectarine, it might have been expected from the law of reversion that nectarines would give birth by bud-variation or by seed to peaches, oftener than peaches to nectarines; but this is by no means the case. p. 53. 45 Loudon's "Gardener's Mag.,' 1828, 49 Phytologist,' vol. iv. p. 299. 50 Gardener's Chron.,'1856, p. 531. 48 Ibid., 1830, p. 597. 51 Godron, 'De l'Espèce,' tom. ii. p. 47 "Gardener's Chronicle,'1841, p. 617. 97. 48 Gardener's Chronicle,'1814, p. 589. 52 Gardener's Chron.,' 1856, p. 531. 412 CHAP. X. FRUITS. Two explanations have been suggested to account for these con- versions. First, that the parent-trees have been in every case hy- brids 53 between the peach and nectarine, and have reverted by bud- variation or by seed to one of their pure parent-forms. This view in itself is not very improbable; for the Mountaineer peach, which was raised by Knight from the red nutmeg peach by pollen of the violette hâtive nectarine, 54 produces peaches, but these are said sometimes to partake of the smoothness and flavour of the necta- rine. But let it be observed that in the previous list no less than six well-known varieties and several other unnamed varieties of the peach have once suddenly produced perfect nectarines by bud-varia- tion; and it would be an extremely rash supposition that all these varieties of the peach, which have been cultivated for years in many districts, and which show not a vestige of a mixed parentage, are, nevertheless, hybrids. A second explanation is, that the fruit of the peach has been directly affected by the pollen of the nectarine: al- though this certainly is possible, it cannot here apply; for we have not a shadow of evidence that a branch which has borne fruit di- resily affected by foreign pollen is so profoundly modified as after- wards to produce buds which continue to yield fruit of the new and modified form. Now it is known that when a bud on a peach-tree has once borne a nectarine the same branch has in several instances gone on during successive years producing nectarines. The Car- clew nectarine, on the other hand, first produced half-and-half fruit, and subsequently pure peaches. Hence we may confidently accept the common view that the nectarine is a variety of the peach, which may be produced either by bud-variation or from seed. In the follow- ing chapter many analogous cases of bud-variation will be given. The varieties of the peach and nectarine run in parallel lines. In both classes the kinds differ from each other in the flesh of the fruit being white, red, or yellow; in being clingstones or freestones; in the flowers being large or small, with certain other characteristic differences; and in the leaves being serrated without glands, or crenated and furnished with globose or reniform glands.55 We can hardly account for this parallelism by supposing that each variety of the nectarine is descended from a corresponding variety of the peach ; for though our nectarines are certainly the descendants of several kinds of peaches, yet a large number are the descendants of other nectarines, and they vary so much when thus reproduced that we can scarcely admit the above explanation. 53 Alph. De Candolle, Géograph. Bot.,' p. 886. 54 Thompson, in Loudon's Encyclop. of Gardening,' p. 911. 55 Catalogue of Fruit in Garden of Hort. Soc.,' 1842, p. 105. CHAP. X. 413 PEACH AND NECTARINE. The varieties of the peach have largely increased in number since the Christian era, when from two to five varieties alone were known ; 56 and the nectarine was unknown. At the present time, , besides many varieties said to exist in China, Downing describes in the United States seventy-nine native and imported varieties of the peach ; and a few years ago Lindley 57 enumerated one hundred and sixty-four varieties of the peach and nectarine grown in England. I have already indicated the chief points of difference between the several varieties. Nectarines, even when produced from distinct kinds of peaches, always possess their own peculiar flavour, and are smooth and small. Clingstone and freestone peaches, which differ in the ripe flesh either firmly adhering to the stone, or easily sepa- rating from it, also differ in the character of the stone itself; that of the freestones or melters being more deeply fissured, with the sides of the fissures smoother than in clingstones. In the various kinds, the flowers differ not only in size, but in the larger flowers the petals are differently shaped, more imbricated, generally red in the centre and pale towards the margin; whereas in the smaller flowers the margins of the petal are usually more darkly coloured. One variety has nearly white flowers. The leaves are more or less serrated, and are either destitute of glands, or have globose or reni form glands; 58 and some few peaches, such as the Brugnon, bear on the same tree both globular and kidney-shaped glands. Ac- cording to Robertson 60 the trees with glandular leaves are liable to blister, but not in any great degree to mildew; whilst the non- glandular trees are more subject to curl, to mildew, and to the attacks of aphides. The varieties differ in the period of their ma- turity, in the fruit keeping well, and in hardiness,—the latter cir- cumstance being especially attended to in the United States. Cer- tain varieties, such as the Bellegarde, stand forcing in hot-houses better than other varieties. The flat-peach of China is the most remarkable of all the varieties; it is so much depressed towards the summit, that the stone is here covered only by roughened skin and not by a fleshy layer.61 Another Chinese variety, called the Honey-peach, is remarkable from the fruit terminating in a long 58 Dr. A. Targioni-Tozzetti, Journal Hort. Soc.,' vol. ix. p. 167. Alph. De Candolle, 'Géograph. Bot.,' p. 885. 57 Transact. Hort. Soc.,' vol. v. p. 554. 58 Loudon's Encyclop, of Gardening,' P. 907. 09 M. Carrière, in "Gard. Chron.,' 1865, p. 1154. 60 Transact. Hort. Soc.,' vol. iii. p. 332. See also "Gardener's Chronicle,' 1865, p. 271, to same effect. Also "Journal of Horticulture,' Sept. 26th, 1865, p. 254. 61 Transact. Hort. Soc.,' vol. iv. p. 512. 414 CHAP. X FRUITS. sharp point; its leaves are glandless and widely dentate.62 The Emperor of Russia peach is a third singular variety, having deeply and doubly serrated leaves; the fruit is deeply cleft with one-half projecting considerably beyond the other; it originated in America, and its seedlings inherit similar leaves.63 The peach has also produced in China a small class of trees valued for ornament, namely the double-flowered; of these five varieties are now known in England, varying from pure white, through rose, to intense crimson.64 One of these varieties, called the camellia-flowered, bears flowers above 21 inches in diameter, whilst those of the fruit-bearing kinds do not at most exceed 11 inch in diameter. The flowers of the double-flowered peaches have the singular property 65 of frequently producing double or treble fruit. Finally, there is good reason to believe that the peach is an almond profoundly modified; but whatever its origin may have been, there can be no doubt that it has yielded during the last eighteen centuries many varieties, some of them strongly character- ised, belonging both to the nectarine and peach form. Apricot (Prunus armeniaca).-It is commonly admitted that this tree is descended from a single species, now found wild in the Cauca- sian region. On this view the varieties deserve notice, because they illustrate differences supposed by some botanists to be of spe- cific value in the almond and plum. The best monograph on the apricot is by Mr. Thompson,67 who describes seventeen varieties. We have seen that peaches and nectarines vary in a strictly parallel manner; and in the apricot, which forms a closely allied genus, we again meet with variations analogous to those of the peach, as well as to those of the plum. The varieties differ considerably in the shape of their leaves, which are either serrated or crenated, some- times with ear-like appendages at their bases, and sometimes with glands on the petioles. The flowers are generally alike, but are small in the Masculine. The fruit varies much in size, shape, and in having the suture little pronounced or absent; in the skin being smooth, or downy as in the orange-apricot; and in the flesh cling- ing to the stone, as in the last-mentioned kind, or in readily sepa- rating from it, as in the Turkey-apricot. In all these differences we see the closest analogy with the varieties of the peach and nectarine. 5 62 Journal of Horticulture,' Sept. 8th, 1863, p. 188. 63 Transact. Hort. Soc.,' vol. vi. p. 412. 64 Gardener's Chronicle, 1857, p. 216. 65 Journal of Hort. Soc.,' vol. ii. p. 283. 68 Alph. De Candolle, Géograph. Bot., p. 879. 67 Transact. Hort. Soc.' (2nd series), vol. i., 1835, p. 56. See also 'Cat. of Fruit in Garden of Hort. Soc.,' 3rd edit., 1842 CHAP. X. 415 APRICOT-PLUMS. 99 68 In the stone we have more important differences, and these in the case of the plum have been esteemed of specific value: in some apricots the stone is almost spherical, in others much flattened, being either sharp in front or blunt at both ends, sometimes channelled along the back, or with a sharp ridge along both margins. In the Moor-park, and generally in the Hemskirke, the stone presents a singular character in being perforated, with a bundle of fibres pass- ing through the perforation from end to end. The most constant and important character, according to Thompson, is whether the kernel is bitter or sweet; yet in this respect we have a graduated difference, for the kernel is very bitter in Shipley's apricot; in the Hemskirke less better than in some other kinds: slightly bitter in the Royal; and “sweet like a hazelaut” in the Breda, Angoumois, and others. In the case of the almond, bitterness has been thought by some high authorities to indicate specific difference. In N. America the Roman apricot endures "cold and unfavourable situations, where no other sort, except the Masculine, will succeed ; and its blossoms bear quite a severe frost without injury. Ac- cording to Mr. Rivers 69 seedling apricots deviate but little from the character of their race: in France the Alberge is constantly repro- duced from seed with but little variation. In Ladakh, according to Moorcroft, 70 ten varieties of the apricot, very different from each other, are cultivated, and all are raised from seed, excepting one, which is budded. Plums (Prunus insititia).–Formerly the sloe, P. spinosa, was thought to be the parent of all our plums; but now this honour is very commonly accorded to P. insititia or the bullace, which is found wild in the Caucasus and N.-Western India, and is natural- ised in England." It is not at all improbable, in accordance with some observations made by Mr. Rivers, 72 that both these forms, which some botanists rank as a single species, may be the parents of our domesticated plums. Another supposed parent-form, the P. domestica, is said to be found wild in the region of the Caucasus. Godron remarks 73 that the cultivated varieties may be divided into two main groups, which he supposes to be descended from two 68 Downing, The Fruits of America,' 1845, p. 157; with respect to the Alberge apricot in France, see p. 153. 89 Gardener's Chronicle, 1863, p. 364. 70 Travels in the Himalayan Pro- ces,' vol. i., 1841, p. 295. 71 See an excellent discussion on this subject in Hewett C. Watson's Cybele Britannica,' vol. iv. p. 80. 72 Gardener's Chronicle,' 1865, p. 27. 73 De l'Espèce,' tom. ii. p. 94. On the parentage of our plums, see also Alph. De Candolle, 'Géograph Bot.,' p. 878. Also Targioni-Tozzetti, 'Journal Hort. Soc.,' vol. ix. p. 164. Also Babing- ton, Manual of Brit. Botany,' 1851, P. 87. 416 CHAP. X. FRUITS. aboriginal stocks; namely, those with oblong fruit and stones pointed at both ends, having narrow separate petals and upright branches; and those with rounded fruit, with stones blunt at both ends, with rounded petals and spreading branches. From what we know of the variability of the flowers in the peach and of the di 1 2 3 4 5 6 7 Fig. 43.-Plum Stones, of natural size, viewed laterally. 1. Bullace Plum. 2. Shrop- shire Damson. 3. Blue Gage. 4. Orleans. 5. Elvas. 6. Denyer's Victoria. 7. Dia- mond. versified manner of growth in our various fruit-trees, it is difficult to lay much weight on these latter characters. With respect to the shape of the fruit, we have conclusive evidence that it is extremely variable: Downing 74 gives outlines of the plums of two seedlings, namely, the red and imperial gages, raised from the greengage; and the fruit of both is more elongated than that of the greengage. The latter has a very blunt broad stone, whereas the stone of the imperial gage is "oval and pointed at both ends." These trees also differ in their manner of growth : "the greengage is a very short- jointed, slow-growing tree, of spreading and rather dwarfish habit;" whilst its offspring, the imperial gage, “grows freely and rises rapidly, and has long dark shoots." The famous Washington 74 "Fruits of America,' pp. 276, 278, 314, 284, 276, 310. Mr. Rivers raised ("Gard. Chron,' 1863, p. 27) from the Prune-pêche, which bears large, round, red plums on stout robust shoots, a seed- ling which bears oval, smaller fruit on shoots that are so slender as to be almost pendulous. CHAP. X. 417 PLUMS. plum bears a globular fruit, but its offspring, the emerald drop, is nearly as much elongated as the most elongated plum figured by Downing, namely, Manning's prune. I have made a small collec- tion of the stones of twenty-five kinds, and they graduate in shape from the bluntest into the sharpest kinds. As characters derived from seeds are generally of high systematic importance, I have thought it worth while to give drawings of the most distinct kinds in my small collection; and they may be seen to differ in a surpris- ing manner in size, outline, thickness, prominence of the ridges, and state of surface. It deserves notice that the shape of the stone is not always strictly correlated with that of the fruit: thus the Washington plum is spherical and depressed at the pole, with a somewhat elongated stone, whilst the fruit of the Goliath is more elongated, but the stone less so, than in the Washington. Again, Denyer's Victoria and Goliath bear fruit closely resembling each other, but their stones are widely different. On the other hand, the Harvest and Black Margate plums are very dissimilar, yet include closely similar stones. The varieties of the plum are numerous, and differ greatly in size, shape, quality, and colour, -being bright yellow, green, almost white, blue, purple, or red. There are some curious varieties, such as the double or Siamese, and the Stoneless plum : in the latter the kernel lies in a roomy cavity surrounded only by the pulp. The climate of North America appears to be singularly favourable for the production of new and good varieties; Downing describes no less than forty, seven of which of first-rate quality have been recent- ly introduced into England.75 Varieties occasionally arise having an innate adaptation for certain soils, almost as strongly pronounc- ed as with natural species growing on the most distinct geological formations; thus in America the imperial gage, differently from al- most all other kinds, "is peculiarily fitted for dry light soils where many sorts drop their fruit," whereas on rich heavy soils the fruit is often insipid.76 My father could never succeed in making the Wine-Sour yield even a moderate crop in a sandy orchard near Shrewsbury, whilst in some parts of the same county and in its na- tive Yorkshire it bears abundantly: one of my relations also re- peatedly tried in vain to grow this variety in a sandy district in Staffordshire. Mr. Rivers has given a number of interesting facts, showing 75 Gardener's Chronicle,'1855, p. 726. 76 Downing's 'Fruit Trees,' p. 278. 77.Gardener's Chronicle,' 1863, p. 27. Sageret, in his 'Pomologie Phys.,' p. 346, enumerates five kinds which can be pro- pagated in France by seed: see also Downing's 'Fruit Trees of America,' p. 305, 312, &c. 418 CHAP. X. FRUITS. how truly many varieties can be propagated by seed. He sowed the stones of twenty bushels of the greengage for the sake of raising stocks, and closely observed the seedlings; "all had the smooth shoots, the prominent buds, and the glossy leaves of the greengage, but the greater number had smaller leaves and thorns." There are two kinds of damson, one the Shropshire with downy shoots, and the other the Kentish with smooth shoots, and these differ but slightly in any other respect: Mr. Rivers sowed some bushels of the Kentish damson, and all the seedlings had smooth shoots, but in some the fruit was oval, in others round or roundish, and in a few the fruit was small, and, except in being sweet, closely resembled that of the wild sloe. Mr. Rivers gives several other striking in- stances of inheritance: thus, he raised eighty thousand seedlings from the common German Quetsche plum, and “not one could be found varying in the least, in foliage or habit.” Similar facts were observed with the Petite Mirabelle plum, yet this latter kind (as well as the Quetsche) is known to have yielded some well-established varieties; but, as Mr. Rivers remarks, they all belong to the same group with the Mirabelle. Cherries (Prunus cerasus, avium, &c).-Botanists believe that our cultivated cherries are descended from one, two, four, or even more wild stocks.78 That there must be at least two parent-species we may infer from the sterility of twenty hybrids raised by Mr. Knight from the morello fertilized by pollen of the Elton cherry; for these hybrids produced in all only five cherries, and one alone of these con- tained a seed." Mr. Thompson 80 has classified the varieties in an apparently natural method in two main groups by characters taken from the flowers, fruit, and leaves; but some varieties which stand widely separate in this classification are quite fertile when crossed ; thus Knight's Early Black cherry is the product of a cross between two such kinds. Mr. Knight states that seedling cherries are more variable than those of any other fruit-tree.81 In the Catalogue of the Horticultural Society for 1842, eighty varieties are enumerated. Some varieties present singular characters: thus the flower of the Cluster cherry includes as many as twelve pistils, of which the majority abort; and they are said generally to produce from two to five or six cherries aggregated together and borne on a single peduncle. In the Ratafia 79 Transact. Hort. Soc.' vol. v., 1824, p. 295. 78 Compare Alph. De Candolle, 'Géo- graph. Bot.,' p. 877; Bentham and Tar- gioni-Tozzetti, in 'Hort. Journal,' vol. ix. p. 163; Godron, 'De l'Espèce,' tom. ii. p. 92. 80 Ibid., second series, vol. i., 1835, p. 248. 81 Ibid., vol. ii. p. 138. CHAP. X. 419 APPLES. cherry several flower-peduncles arise from a common peduncle, up- wards of an inch in length. The fruit of Gascoigne's Heart has its apex produced into a globule or drop: that of the white Hungarian Gean has almost transparent flesh. The Flemish cherry is "a very odd-looking fruit,” much flattened at the summit and base, with the latter deeply furrowed, and borne on a stout very short footstalk. In the Kentish cherry the stone adheres so firmly to the footstalk, that it can be drawn out of the flesh; and this renders the fruit well fitted for drying. The Tobacco-leaved cherry, according to Sageret and Thompson, produces gigantic leaves, more than a foot and sometimes even eighteen inches in length, and half a foot in breadth. The Weeping cherry, on the other hand, is valuable only as an ornament, and, according to Downing, is “a charming little tree with slender weeping branches, clothed with small almost myrtle-like foliage.” There is also a peach-leaved variety. Sageret describes a remarkable variety, le griottier de la Toussaint, which bears at the same time, even as late as September, flowers and fruit of all degrees of maturity. The fruit, which is of inferior quality, is borne on long, very thin footstalks. But the extraordi- nary statement is made that all the leaf-bearing shoots spring from old flower-buds. Lastly, there is an important physiological dis- tinction between those kinds of cherries which bear fruit on young or on old wood; but Sageret positively asserts that a Bigarreau in his garden bore fruit on wood of both ages.82 Apple (Pyrus malus).- The one source of doubt felt by botanists with respect to the parentage of the apple is whether, besides P. malus, two or three other closely allied wild forms, namely, P. acerba and præcox or paradisiaca, do not deserve to be ranked as distinct species. The P. præcox is supposed by some authors 83 to be the parent of the dwarf paradise stock, which, owing to the fibrous roots not penetrating deeply into the ground, is so largely used for grafting ; but the paradise stock, it is asserted, 64 cannot be propa- gated true by seed. The common wild crab varies considerably in 82 These several statements are taken from the four following works, which may, I believe, be trusted. Thompson, in Hort. Transact.,' see above; Sage- ret's 'Pomologie Phys.,' 1830, pp. 358, 364, 367, 379; Catalogue of the Fruit in the Garden of Hort. Soc.,' 1842, pp. 57, 60; Downing, The Fruits of America, 1845, pp. 189, 195, 200. 83 Mr. Lowe states in his Flora of Madeira' (quoted in Gard. Chron., 1862, p. 215) that the P. malus, with its nearly sessile fruit, ranges farther south than the long-stalked P. acerba, which is entirely absent in Madeira, the Cana- ries, and apparently in Portugal. This fact supports the belief that these two forms deserve to be called species. But the characters separating them are of slight importance, and of a kind known to vary in other cultivated fruit-trees. 84 See 'Journ. of Hort. Tour.,' by De- putation of the Caledonian Hort. Soc., 1823, p. 459. 420 CHAF, X. FRUITS. England; but many of the varieties are believed to be escaped seed- lings. Every one knows the great difference in the manner of growth, in the foliage, flowers, and especially in the fruit, between the almost innumerable varieties of the apple. The pips or seeds (as I know by comparison) likewise differ considerably in shape, size, and colour. The fruit is adapted for eating or for cooking in differ- ent ways, and keeps for only a few weeks or for nearly two years. Some few kinds have the fruit covered with a powdery secretion, called bloom, like that on plums; and "it is extremely remarkable that this occurs almost exclusively among varieties cultivated in Russia.?86 Another Russian apple, the white Astracan, possesses the singular property of becoming transparent, when ripe, like some sorts of crabs. The api étoilé has five prominent ridges, hence its name; the api noir is nearly black: the twin cluster pippin often bears fruit joined in pairs.87 The trees of the several sorts differ greatly in their periods of leafing and flowering; in my orchard the Court Pendu Plat produces its leaves so late, that during several springs I have thought it dead. The Tiffin apple scarcely bears a leaf when in full bloom; the Cornish crab, on the other hand, bears so many leaves at this period that the flowers can hardly be seen. In some kinds the fruit ripens in midsummer; in others, late in the autumn. These several differences in leafing, flowering, and fruit- ing, are not at all necessarily correlated ; for, as Andrew Knight has remarked, no one can judge from the early flowering of a new seedling, or from the early shedding or change of colour of the leaves, whether it will mature its fruit early in the season. The varieties differ greatly in constitution. It is notorious that our summers are not hot enough for the Newtown Pippin,90 which is the glory of the orchards near New York; and so it is with seve- ral varieties which we have imported from the Continent. On the other hand, our Court of Wick succeeds well under the severe cli- mate of Canada. The Calville rouge de Micoud occasionally bears two crops during the same year. The Burr Knot is covered with small excrescences, which emit roots so readily that a branch with blossom-buds may be stuck in the ground, and will root and bear 85 H. O. Watson, Cybele Britannica,' vol. i. p. 334. 86 Loudon's "Gardener's Mag.,' vol. vi., 1830, p. 83. vol. iv., 1828, p. 112. 89 The Culture of the Apple,' p. 43. Van Mons makes the same remark on Arbres Fruitiers,' tom. ii., 1836, p. 414. the pear, 87 See Catalogue of Fruit in Garden of Hort. Soc.,' 1812, and Downing's American Fruit Trees.' 88 Loudon's Gardener's Magazine, 90 Lindley's 'Horticulture,' p. 116. See also Knight on the Apple-Tree, in Transact. of Hort. Soc.,' vol. vi. p. 229. CHAP. X. 421 APPLES. a few fruit even during the first year.91 Mr. Rivers has recently de- scribed some seedlings valuable from their roots running near the surface. One of these seedlings was remarkable from its extremely dwarfed size, "forming itself into a bush only a few inches in height." Many varieties are particularly liable to canker in cer- tain soils. But perhaps the strangest constitutional peculiarity is that the Winter Majetin is not attacked by the mealy bug or coccus; Lindley 93 states that in an orchard in Norfolk infested with these 'insects the Majetin was quite free, though the stock on which it was grafted was affected; Knight makes a similar statement with respect to a cider apple, and adds that he only once saw these in- sects just above the stock, but that three days afterwards they en- tirely disappeared; this apple, however, was raised from a cross be- tween the Golden Hervey and the Siberian Crab; and the latter, I believe, is considered by some authors as specifically distinct. The famous St. Valery apple must not be passed over; the flower has a double calyx with ten divisions, and fourteen styles surmounted by conspicuous oblique stigmas, but is destitute of stamens or corolla. The fruit is constricted round the middle, and is formed of five seed- cells, surmounted by nine other cells.94 Not being provided with stamens, the tree requires artificial fertilisation; and the girls of St. Valery annually go to "faire ses pommes,” each marking her own fruit with a ribbon ; and as different pollen is used, the fruit differs, and we here have an instance of the direct action of foreign pollen on the mother-plant. These monstrous apples include, as we have seen, fourteen seed-cells; the pigeon-apple, 95 on the other hand, has only four, instead of, as with all common apples, five cells; and this certainly is a remarkable difference. In the catalogue of apples published in 1842 by the Horticultural Society, 897 varieties are enumerated; but the differences between most of them are of comparatively little interest, as they are not strictly inherited. No one can raise, for instance, from the seed of the Ribston Pippin, a tree of the same kind; and it is said that the “Sister Ribston Pippin" was a white, semi-transparent, sour-fleshed apple, or rather large crab.96 Yet it is a mistake to suppose that with most varieties the characters are not to a certain extent in- 91 Transact. Hort. Soc.,' vol. i., 1812, p. 120. 92 Journal of Horticulture,' March 13th, 1866, p. 194. 93 Transact. Hort. Soc.,' vol. iv. p. 68. For Knight's case, see vol. vi. p. 547. When the coccus first appeared in this country, it is said (vol. ii. p. 163) that it was more injurious to crab-stocks than to the apples grafted on them. 94 Mém. de la Soc. Linn. de Paris, tom. iii., 1825, p. 164; and Seringe, Bulletin Bot.,' 1830, p. 117. 95 Gardener's Chronicle,' 1849, p. 24. 96 R. Thompson, in Gardener's Chron.,' 1850, p. 788. 422 CHAP. X. FRUITS. herited. In two lots of seedlings raised from two well-marked kinds, many worthless, crab-like seedlings will appear, but it is now known that the two lots not only usually differ from each other, but resemble to a certain extent their parents. We see this indeed in the several sub-groups of Russetts, Sweetings, Codlins, Pearmains, Reinettes, &c.,97 which are all believed, and many are known, to be descended from other varieties bearing the same names. Pears (Pyrus communis).-I need say little on this fruit, which varies much in the wild state, and to an extraordinary degree when cultivated, in its fruit, flowers, and foliage. One of the most cele- brated botanists in Europe, M. Decaisne, has carefully studied the many varieties; 98 although he formerly believed that they were de- rived from more than one species, he is now convinced that all be- Iong to one. He has arrived at this conclusion from finding in the several varieties a perfect gradation between the most extreme characters; so perfect is this gradation that he maintains it to be impossible to classify the varieties by any natural method. M. De- caisne raised many seedlings from four distinct kinds, and has care- fully recorded the variations in each. Notwithstanding this ex- treme degree of variability, it is now positively known that many kinds reproduce by seed the leading characters of their race.99 Straroberries (Fragaria).—This fruit is remarkable on account of the number of species which have been cultivated, and from their rapid improvement within the last fifty or sixty years. Let any one compare the fruit of one of the largest varieties exhibited at our Shows with that of the wild wood strawberry, or, which will be a fairer comparison, with the somewhat larger fruit of the wild American Virginian Strawberry, and he will see what prodigies horticulture has effected.100 The number of varieties has likewise increased in a surprisingly rapid manner. Only three kinds were known in France, in 1746, where this fruit was early cultivated. In 1766 five species had been introduced, the same which are now cul- 97 Sageret, Pomologie Physiologique, 1830, p. 263. Downing's 'Fruit Trees, pp. 130, 134, 139, &c. Loudon's Gar- dener's Mag.,' vol viii. p. 317. Alexis Jordan, 'De l'Origine des diverses Vari. étés,' in 'Mém. de l'Acad. Imp. de Lyon,' tom. ii., 1852, pp. 95, 114, Gar- dener's Chronicle,' 1850, pp. 774, 788. 98 Comptes Rendus,' July 6th, 1863. 99 Gardener's Chronicle,' 1856, p. 804; 1857, p. 820; 1862, p. 1195. 100 Most of the largest cultivated strawberries are the descendants of F. grandiflora or Chiloensis, and I have seen no account of these forms in their wild state. Methuen's Scarlet (Down- ing, Fruits,' p. 527) has immense fruit of the largest size," and belongs to the section descended from F. Virginiana; and the fruit of this species, as I hear from Prof. A. Gray, is only a little larger than that of F. vesco, or our common wood strawberry. CHAP. X. 423 STRAWBERRIES. tivated, but only five varieties of Fragaria vesca, with some sub-va- rieties, had been produced. At the present day the varieties of the several species are almost innumerable. The species consist of, firstly, the wood or Alpine cultivated strawberries, descended from F. vesca, a native of Europe and of North America. There are eight wild European varieties, as ranked by Duchesne, of F. vesca, but several of these are considered species by some botanists. Secondly, the green strawberries, descended from the European F. collina, and little cultivated in England. Thirdly, the Hautbois, from the European F. elatior. Fourthly, the Scarlets, descended from F. Virginiana, a native of the whole breadth of North America. Fifthly, the Chili, descended from F. Chiloensis, an inhabitant of the west coast of the temperate parts both of North and South America. Lastly, the Pines or Carolinas (including the old Blacks), which have been ranked by most authors under the name of F. grandiflora as a distinct species, said to inhabit Surinam; but this is a manifest error. This form is considered by the highest autho- rity, M. Gay, to be merely a strongly marked race of F. Chiloensis.101 These five or six forms have been ranked by most botanists as spe- cifically distinct; but this may be doubted, for Andrew Knight,102 who raised no less than 400 crossed strawberries, asserts that the F. Virginiana, Chiloensis and grandiflora "may be made to breed to- gether indiscriminately," and he found, in accordance with the prin- ciple of analogous variation, “that similar varieties could be obtain- ed from the seeds of any one of them." Since Knight's time there is abundant and additional evidence 103 of the extent to which the American forms spontaneously cross. We owe indeed to such crosses most of our choicest existing vari- eties. Knight did not succeed in crossing the European wood- strawberry with the American Scarlet or with the Hautbois. Mr. Williams, of Pitmaston, however, succeeded; but the hybrid off- spring from the Hautbois, though fruiting well, never produced seed, with the exception of a single one, which reproduced the pa- rent hybrid form.104 Major R. Trevor Clarke informs me that he crossed two members of the Pine class (Myatt's B. Queen and Keen's Seedling), with the wood and hautbois, and that in each case he raised only a single seedling; one of these fruited, but was almost 101 Le Fraisier,' par le Comte L. de Lambertye, 1864, p. 50. 102 Transact. Hort. Soc.,' vol. iii. 1820, p. 207. 103 See an account. by Prof. Decaisne, and by others in Gardener's Chronicle, 1862, p. 335, and 1858, p. 172; and Mr. Barnet's paper in 'Hort. Soc. Transact.,' vol. vi., 1826, p. 170. 104 Transact. Hort. Soc.,' vol. V., 1824, p. 294. 9 424 CHAP. X. FRUITS. barren. Mr. W. Smith, of York, has raised similar hybrids with equally poor success. 105 We thus see 106 that the European and American species can with some difficulty be crossed ; but it is improbable that hybrids sufficiently fertile to be worth cultivation will ever be thus produced. This fact is surprising, as these forms structurally are not widely distinct, and are sometimes connected in the districts where they grow wild, as I hear from Professor Asa Gray, by puzzling intermediate forms. The energetic culture of the strawberry is of recent date, and the cultivated varieties can in most cases still be classed under some one of the above five native stocks. As the American strawberries cross so freely and spontaneously, we can hardly doubt that they will ultimately become inextricably confused. We find, indeed, that horticulturists at present disagree under which class to rank some few of the varieties; and a writer in the 'Bon Jardinier' of 1840 remarks that formerly it was possible to class all of them under some one species, but that now this is quite impossible with the American forms, the new English varieties having completely filled up the gaps between them. 107 The blending together of two or more aboriginal forms, which there is every reason to believe has occurred with some of our anciently cultivated productions, we now see actually occurring with our strawberries. The cultivated species offer some variations worth notice. The Black Prince, a seedling from Keen's Imperial (this latter being a seedling of a very white strawberry, the white Carolina), is remark- able from " its peculiar dark and polished surface, and from present- ing an appearance entirely unlike that of any other kind." 108 Al- though the fruit in the different varieties differs so greatly in form, size, colour, and quality, the so-called seed (which corresponds with the whole fruit in the plum), with the exception of being more or less deeply imbedded in the pulp, is, according to De Jonghe,109 ab- solutely the same in all, and this no doubt may be accounted for by the seed being of no value, and consequently not having been subjected to selection. The strawberry is properly three-leaved, but in 1761 Duchesne raised a single-leaved variety of the European wood-strawberry, which Linnæus doubtfully raised to the rank of a species. Seedlings of this variety, like those of most varieties not fixed by long-continued selection, often revert to the ordinary form, 105 'Journal of Horticulture, Dec. S0th, 1862, p. 779. Sec also Mr. Prince to the same effect, idem, 1863, p. 418. 106 For additional evidence see 'Jour- nal of Horticulture, Dec. 9th, 1862, p. 21. 107 'Le Fraisier, par le Comte L. de Lambertye, pp. 221, 230. 108 Transact. Hort. Soc.,' vol. vi., p. 200. 109 Gardener's Chron.,'1858, p. 173. CEAP. X. 425 STRAWBERRIES. or present intermediate states. 110 A variety raised by Mr. Myatt, 111 apparently belonging to one of the American forms, presents a va- riation of an opposite nature, for it has five leaves ; Godron and Lambertye also mention a five-leaved variety of F. collina. The Red Bush Alpine strawberry (one of the F. vesca section does not produce stolons or runners, and this remarkable deviation of structure is reproduced truly by seed. Another sub-variety, the White Bush Alpine, is similarly characterised, but when propagated by seed it often degenerates and produces plants with runners. 112 A strawberry of the American Pine section is also said to make but few runners. 113 Much has been written on the sexes of strawberries; the true Hautbois properly bears the male and female organs on separate plants, 114 and was consequently named by Duchesne dioica; but it frequently produces hermaphrodites; and Lindley, 115 by propagat- ing such plants by runners, at the same time destroying the males, soon raised a self-prolific stock. The other species often 'show a tendency towards an imperfect separation of the sexes, as I have noticed with plants forced in a hot-house. Several English varie- ties, which in this country are free from any such tendency, when cultivated in rich soils under the climate of North America com- monly produce plants with separate sexes. Thus a whole acre of Keen's Seedlings in the United States has been observed to be al- most sterile from the absence of male flowers; but the more general rule is, that the male plants overrun the females. Some members of the Cincinnati Horticultural Society, especially appointed to in- vestigate this subject, report that "few varieties have the flowers perfect in both sexual organs,” &c. The most successful cultivators in Ohio, plant for every seven rows of “pistillata," or female plants, one row of hermaphrodites, which afford pollen for both kinds; but the hermaphrodites, owing to their expenditure in the production of pollen, bear less fruit than the female plants. The varieties differ in constitution. Some of our best English kinds, such as Keen's Seedlings, are too tender for certain parts of North America, where other English and many American varieties succeed perfectly. That splendid fruit, the British Queen, can be cultivated but in few places either in England or France; but this 116 p. 210. 110 Godron, 'De l'Espèce,' tom. i. p. 161. 111 Gardener's Chron.,'1851, p. 440. 112 F. Gloede, in Gardener's Chron.,' 1862, p. 1053 113 Downing's 'Fruits,' p. 532. 114 Barnet, in 'Hort. Transact.,' vol. vi. 115 Gardener's Chron.,' 1847, p. 539. 116 For the several statements with respect to the American strawberries, see Downing, "Fruits,' p. 524; Gardener's Chronicle,' 1843, p. 158; 1847, p. 539; 1861, p. 717. 426 CHAP, X, FRUITS. ") 117 apparently depends more on the nature of the soil than on the cli- mate: a famous gardener says that "no mortal could grow the British Queen at Shrubland Park unless the whole nature of the soil was altered.' La Constantina is one of the hardiest kinds, and can withstand Russian winters, but is easily burnt by the sun, so that it will not succeed in certain soils either in England or the United States. 118 The Filbert Pine Strawberry “requires more water than any other variety; and if the plants once suffer from drought, they will do little or no good afterwards.” 119 Cuthill's Black Prince Strawberry evinces a singular tendency to mildew : no less than six cases have been recorded of this variety suffering severely, whilst other varieties growing close by, and treated in ex- actly the same manner, were not at all infested by this fungus. 120 The time of maturity differs much in the different varieties; some belonging to the wood or alpine section produce a succession of crops throughout the summer. Gooseberry (Ribes grossularia).-No one, I believe, has hitherto doubted that all the cultivated kinds are sprung from the wild plant bearing this name, which is common in Central and Northern Eu- rope; therefore it will be desirable briefly to specify all the points, though not very important, which have varied. If it be admitted that these differences are due to culture, authors perhaps will not be so ready to assume the existence of a large number of unknown wild parent-stocks for our other cultivated plants. The gooseberry is not alluded to by writers of the classical period. Turner men- tions it in 1573, and Parkinson, in 1629, specifies eight varieties; the Catalogue of the Horticultural Society for 1842 gives 149 varie- ties, and the lists of the Lancashire nurserymen are said to include above 300 names.121 In the 'Gooseberry Grower's Register for 1862' I find that 243 distinct varieties have at various periods won prizes ; so that a vast number must have been exhibited. No doubt the difference between many of the varieties is very small; but Mr. Thompson in classifying the fruit for the Horticultural Society found less confusion in the nomenclature of the gooseberry than of any other fruit, and he attributes this " to the great interest which the prize-growers have taken in detecting sorts with wrong names," and 117 Mr. D. Beaton, in Cottage Gar- dener,' 1860, p. 86, See also Cottage Gardener,' 1855, p. 88, and many other authorities. For the Continent, see F. Gloede, in 'Gardener's Chronicle,' 1862, 119 Mr. H. Doubleday in Gardener's Chron.,' 1862, p. 1101. 120 Gardener's Chronicle,' 1854, p. 254. 121 Loudon's Encyclop. of Gardening,' p. 930; and Alph, de Candolle, 'Géo- graph. Bot.,' p. 910. p. 1053. 118 Rev. W. F. Radclyffe, in Journal of Hort.,' March 14, 1865, p. 207. CHAP. X. 427 THE GOOSEBERRY. this shows that all the kinds, numerous as they are, can be recog- nised with certainty. The bushes differ in their manner of growth, being erect, or spread- ing, or pendulous. The periods of leafing and flowering differ both ab- solutely and relatively to each other; thus the Whitesmith produces early flowers, which from not being protected by the foliage, as it is believed, continually fail to produce fruit.122 The leaves vary in size, tint, and in depth of lobes; they are smooth, downy, or hairy on the upper surface. The branches are more or less downy or spinose; "the Hedgehog has probably derived its name from the singular bristly condition of its shoots and fruit." The branches of the wild gooseberry, I may remark, are smooth, with the exception of thorns at the bases of the buds. The thorns themselves are either very small, few and single, or very large and triple; they are sometimes reflexed and much dilated at their bases. In the dif- ferent varieties the fruit varies in abundance, in the period of matu- rity, in hanging until shrivelled, and greatly in size," some sorts having their fruit large during a very early period of growth, whilst others are small until nearly ripe.” The fruit varies also much in colour, being red, yellow, green, and white—the pulp of one dark-red gooseberry being tinged with yellow; in flavour; in being smooth or downy,-few, however, of the Red gooseberries, whilst many of the so-called Whites, are downy; or in being so spinose that one kind is called Henderson's Porcupine. Two kinds acquire when mature a powdery bloom on their fruit. The fruit varies in the thickness and veining of the skin, and, lastly, in shape, being spherical, oblong, oval, or obovate.123 I cultivated fifty-four varieties, and, considering how greatly the fruit differs, it was curious how closely similar the flowers were in all these kinds. In only a few I detected a trace of difference in the size or colour of the corolla. The calyx differed in a rather greater degree, for in some kinds it was much redder than in others; and in one smooth white gooseberry it was unusually red. The calyx also differed in the basal part being smooth or woolly, or covered with glandular hairs. It deserves notice, as being contrary to what might have been expected from the law of correlation, that a smooth red gooseberry had a remarkably hairy calyx. The flowers of the Sportsman are furnished with very large coloured bracteæ; and this is the most singular deviation of structure which 122 Loudon's Gardener's Magazine, vol. iv. 1828, p. 112. 123 The fullest account of the goose- berry is given by Mr. Thompson in Transact. Hort. Soc.,' vol. i., 2nd series, 1835, p. 218, from which most of the fore- going facts are given. 429 CHAP. X. FRUITS. I have observed. These same flowers also varied much in tho number of the petals, and occasionally in the number of the stamens and pistils; so that they were semi-monstrous in structure, yet they produced plenty of fruit. Mr. Thompson remarks that in the Pas- time gooseberry “extra bracts are often attached to the sides of the “fruit."124 The most interesting point in the history of the gooseberry is the steady increase in the size of the fruit. Manchester is the metro- polis of the fanciers, and prizes from five shillings to five or ten pounds are yearly given for the heaviest fruit. The 'Gooseberry Grower's Register' is published annually; the earliest known copy is dated 1786, but it is certain that meetings for the adjudication of prizes were held some years previously. 125. The 'Register' for 1845 gives an account of 171 Gooseberry Shows, held in different places during that year; and this fact shows on how large a scale the cul- ture has been carried on. The fruit of the wild gooseberry is said 126 to weigh about a quarter of an ounce or 5 dwts., that is, 120 grs. ; about the year 1786 gooseberries were exhibited weighing 10 dwts., so that the weight was then doubled ; in 1817 26 dwts. 17 grs. was attained; there was no advance till 1825, when 31 dwts. 16 grs. was reached; in 1830 “ Teazer” weighed 32 dwts. 13 grs.; in 1841 “Wonderful” weighed 32 dwts. 16 grs. ; in 1844 "London" weighed 35 dwts. 12 grs., and in the following year 36 dwts. 16 grs.; and in 1852 in Staffordshire the fruit of this same variety reached the astonishing weight of 37 dwts. 7 grs., or 895 grs. ; that is, be- tween seven and eight times the weight of the wild fruit. I find that a small apple, 64 inches in circumference, has exactly this same weight. The "London" gooseberry (which in 1862 had altogether gained 343 prizes) has, up to the present year of 1864, never reached a greater weight than that attained in 1852. Perhaps the fruit of the gooseberry has now reached the greatest possible weight, unless in the course of time some quite new and distinct variety shall arise. This gradual, and on the whole steady increase of weight from the latter part of the last century to the year 1852, is probably in large part due to improved methods of cultivation, for extreme care is now taken; the branches and roots are trained, composts are 127 127 6 194 Catalogue of Fruits of Hort. Soc. Garden,' 3rd edit. 1842. 125 Mr. Clarkson, of Manchester, on the Culture of the Gooseberry, in Lou- don's Gardener's Magazine,' vol. iv. 1828, p. 452. 126 Downing's Fruits of Amer.,' p. 213. Gardener's Chronicle,' 1944, p. 811, where a table is given; and 1845, p. 819. For the extreme weights gained, see 'Journal of Horticulture,' July 26, 1964, p. 61. CHAP. X. 429 WALNUTS. 128 made, the soil is mulched, and only a few berries are left on each bush; but the increase no doubt is in main part due to the con- tinued selection of seedlings which have been found to be more and more capable of yielding such extraordinary fruit. Assuredly the “Highwayman " in 1817 could not have produced fruit like that of the “Roaring Lion” in 1825; nor could the “Roaring Lion," though it was grown by many persons in many places, gain the supreme triumph achieved in 1852 by the “ London ” Gooseberry. Walnut (Juglans regia).--This tree and the common nut belong to a widely different order from the foregoing fruits, and are there- fore here noticed. The walnut grows wild in the Caucasus and Himalaya, where Dr. Hooker 120 found the fruit of full size, but "as hard as a hickory-nut." In England the walnut presents consider- able differences, in the shape and size of the fruit, in the thickness of the husk, and in the thinness of the shell; this latter quality has given rise to a variety called the thin-shelled, which is valuable, but suffers from the attacks of tom-tits.130 The degree to which the kernel fills the shell varies much. In France there is a variety called the Grape or cluster-walnut, in which the nuts grow in “bunches of ten, fifteen, or even twenty together." There is another variety which bears on the same tree differently shaped leaves, like the heterophyllous hornbeam; this tree is also remarkable from having pendulous branches, and bearing elongated, large, thin- shelled nuts.131 M. Cardan has minutely described 132 some singu- lar physiological peculiarities in the June-leafing variety, which produces its leaves and flowers four or five weeks later, and retains its leaves and fruit in the autumn much longer, than the common varieties; but in August is in exactly the same state with them. These constitutional peculiarities are strictly inherited. Lastly, walnut-trees, which are properly monoicous, sometimes entirely fail to produce male flowers. 133 Nuts (Corylus avellana).—Most botanists rank all the varieties under the same species, the common wild nut.134 The husk, or in- volucre, differs greatly, being extremely short in Barr's Spanish, and extremely long in filberts, in which it is contracted so as to 128 Mr. Saul, of Lancaster, in Loudon's "Gardener's Mag.,' 1829, vol. v. p. 202. Gardener's Mag., vol. iii. 1828, p. 421; 132 Quoted in Gardener's Chronicle,' and vol. x. 1834, p. 42. 1819, p. 101. 129 'Himalayan Journals,' 1854, vol. 133 Gardener's Chronicle,' 1847, pp. ii. p. 334. Moorcroft (Travels,' vol. ii. 541 and 558. p. 146) describes four varieties cultivated 134 The following details are taken in Kashmir. from the Catalogue of Fruits, 1842, in Gardener's Chronicle,' 1850, p. Garden of Hort. Soc., p. 103 ; and from 723. Loudon's Encyclop. of Gardening,' p. 131 Paper translated in Loudon's 943. 130 4 430 CHAP. X. CUCURBITACEOUS PLANTS. prevent the nut falling out. This kind of husk also protects the nut from birds, for titmice (Parus) have been observed 135 to pass over filberts, and attack cobs and common nuts growing in the same orchard. In the purple-filbert the husk is purple, and in the frizzled-filbert it is curiously laciniated; in the red-filbert the pellicle of the kernel is red. The shell is thick in some va- rieties, but is thin in Cosford's-nut, and in one variety is of a blu- ish colour. The nut itself differs much in size and shape, being ovate and compressed in filberts, nearly round and of great size in cobs and Spanish nuts, oblong and longitudinally striated in Cos- ford's, and obtusely four-sided in the Downton Square nut. Cucurbitaceous plants. These plants have been for a long period the opprobrium of botanists; numerous varieties have been ranked as species, and, what happens more rarely, forms which now must be considered as species have been classed as varieties. Owing to the admirable experimental researches of a distinguished botanist, M. Naudin,136 a flood of light has recently been thrown on this group of plants. M. Naudin, during many years, observed and experi- mented on above 1200 living specimens, collected from all quarters of the world. Six species are now recognised in the genus Cucur- bita ; but three alone have been cultivated and concern us, namely, C. maxima and pepo, which include all pumpkins, gourds, squashes, and vegetable marrow, and C. moschata, the water-melon. These three species are not known in a wild state; but Asa Gray 137 gives good reason for believing that some pumpkins are natives of N. America. These three species are closely allied, and have the same general habit, but their innumerable varieties can always be distinguished, according to Naudin, by certain almost fixed characters; and what is still more important, when crossed they yield no seed, or only sterile seed; whilst the varieties spontaneously intercross with the utmost freedom. Naudin insists strongly (p. 15), that, though these three species have varied greatly in many characters, yet it has been in so closely an analogous manner that the varieties can be arranged in almost parallel series, as we have seen with the forms of wheat, with the two main races of the peach, and in other cases. Though some of the varieties are inconstant in character, yet others, when grown separately under uniform conditions of life, are, as Naudin repeatedly (pp. 6, 16, 35) urges, “douées d'une stabilité presque comparable à celle des espèces les mieux caractérisées.” 195 Gardener's Chron., '1860, p. 956. 136 Annales des Sc. Nat. Bot.,' 4th series, vol. vi. 1856, p. 5. 137 "American Journ. of Science,' 2nd ser. vol. xxiv. 1857, p. 442. CHAP. X. 431 CUCURBITACEOUS PLANTS. One variety, l'Orangin (pp. 43, 63), has such prepotency in trans- mitting its character that when crossed with other varieties a vast majority of the seedlings come true. Naudin, referring (p. 47) to C. pepo, says that its races “ne diffèrent des espèces véritables qu'en ce qu'elles peuvent s'allier les unes aux autres par voie d'hybridité, sans que leur descendance perde la faculté de se perpétuer.” If we were to trust to external differences alone, and give up the test of sterility, a multitude of species would have to be formed out of the varieties of these three species of Cucurbita. Many naturalists at the present day lay far too little stress, in my opinion, on the test of sterility; yet it is not improbable that distinct species of plants after a long course of cultivation and variation may have their mutual sterility eliminated, as we have every reason to believe has occurred with domesticated animals. Nor, in the case of plants under cultivation, should we be justified in assuming that varieties never acquire a slight degree of mutual sterility, as we shall more fully see in a future chapter when certain facts are given on the high authority of Gärtner and Kölreuter.138 The forms of C. pepo are classed by Naudin under seven sections, each including subordinate varieties. He considers this plant as probably the most variable in the world. The fruit of one variety (pp. 33, 46) exceeds in volume that of another by more than two thousand fold! When the fruit is of very large size, the number produced is few (p. 45); when of small size, many are produced. No less astonishing (p. 33) is the variation in the shape of the fruit; the typical form apparently is egg-like, but this becomes either drawn out into a cylinder, or shortened into a flat disc. We have also an almost infinite diversity in the colour and state of surface of the fruit, in the hardness both of the shell and of the flesh, and in the taste of the flesh, which is either extremely sweet, farinaceous, or slightly bitter. The seeds also differ in a slight degree in shape, and wonderfully in size (p. 34), namely, from six or seven to more than twenty-five millimètres in length. In the varieties which grow upright or do not run and climb, the tendrils, though useless (p. 31), are either present or are represented by various semi-monstrous organs, or are quite absent. The ten- drils are even absent in some running varieties in which the stems are much elongated. It is a singular fact that (p. 31), in all the varieties with dwarfed stems, the leaves closely resemble each other in shape. 198 Gärtner, 'Bastarderzeugung,'1849, s. 87, and s. 169 with respect to Maize; on Verbascum, idem, ss. 92 and 181 ; also his 'Kenntniss der Befruchtung,' s. 137. With respect to Nicotiana, see Kölreuter, Zweite Forts.,' 1764, s. 53 though this is a somewhat different case. 432 CHAP, X CUCURBITACEOUS PLANTS. Those naturalists who believe in the immutability of species often maintain that, even in the most variable forms, the characters which they consider of specific value are unchangeable. To give an example from a conscientious writer, 139 who, relying on the labours of M. Naudin and referring to the species of Cucurbita, says, "au milieu de toutes les variations du fruit, les tiges, les feuilles, les calices, les corolles, les étamines restent invariables dans chacune d'elles." Yet M. Naudin in describing Cucurbita pepo (p. 30) says, “Ici, d'ailleurs, ce ne sont pas seulement les fruits qui varient, c'est aussi le feuillage et tout le port de la plante. Néan- moins, je crois qu'on la distinguera toujours facilement des deux autres espèces, si l'on veut ne pas perdre de vue les caractères dif- férentiels que je m'efforce de faire ressortir. Ces caractères sont quelquefois peu marqués : il arrive même que plusieurs d'entre eux s'effacent presque entièrement, mais il en reste toujours quelques- uns qui remettent l'observateur sur la voie.” Now let it be noted what a difference, with regard to the immutability of the so-called specific characters, this paragraph produces on the mind, from that above quoted from M. Godron. I will add another remark : naturalists continually assert that no important organ varies; but in saying this they unconsciously argue in a vicious circle; for if an organ, let it be what it may, is highly variable, it is regarded as unimportant, and under a systematic point of view this is quite correct. But as long as constancy is thus taken as the criterion of importance, it will indeed be long before an im- portant organ can be shown to be inconstant. The enlarged form of the stigmas, and their sessile position on the summit of the ovary, must be considered as important characters, and were used by Gas- parini to separate certain pumpkins as a distinct genus; but Naudin says (p. 20) these parts have no constancy, and in the flowers of the Turban varieties of C. maxima they sometimes resume their ordi- nary structure. Again in C. maxima, the carpels (p. 19) which form the Turban project even as much as two-thirds of their length out of the receptacle, and this latter part is thus reduced to a sort of platform ; but this remarkable structure occurs only in certain va- rieties, and graduates into the common form in which the carpels are almost entirely enveloped within the receptacle. In C. moschata the ovarium (p. 50) varies greatly in shape, being oval, nearly sphe- rical, or cylindrical, more or less swollen in the upper part, or con- stricted round the middle, and either straight or curved. When the ovarium is short and oval the interior structure does not differ from 189 De l'Espèce;' par M. Godron, tom. ii. p. 64. CHAP. X. 433 CUCURBITACLOUS PLANTS. that of C. maxima and pepo, but when it is elongated the carpels oc- cupy only the terminal and swollen portion. I may add that in one variety of the cucumber (Cucumis sativus) the fruit regularly con tains five carpels instead of three.140 I presume that it will not be disputed that we here have instances of great variability in organs of the highest physiological importance, and with most plants of the highest classificatory importance. Sageret 141 and Naudin found that the cucumber (C. sativus) could not be crossed with any other species of the genus; therefore no doubt it is specifically distinct from the melon. This will appear to most persons a superfluous statement; yet we hear from Naudin 142 that there is a race of melons, in which the fruit is so like that of the cucumber, "both externally and internally, that it is hardly possible to distinguish the one from the other except by the leaves." The varieties of the melon seem to be endless, for Naudin after six years' study has not come to the end of them: he divides them into ten sections, including numerous sub-varieties which all intercross with perfect ease. 143 Of the forms considered by Naudin to be va- rieties, botanists have made thirty distinct species ! "and they had not the slightest acquaintance with the multitude of new forms which have appeared since their time." Nor is the creation of so many species at all surprising when we consider how strictly their characters are transmitted by seed, and how wonderfully they differ in appearance: "Mira est quidem foliorum et habitus diversitas, sed multo magis fructuum," says Naudin. The fruit is the valuable part, and this, in accordance with the common rule, is the most mo- dified part. Some melons are only as large as small plums, others weigh as much as sixty-six pounds. One variety has a scarlet fruit! Another is not more than an inch in diameter, but some- times more than a yard in length, “twisting about in all directions like a serpent.” It is a singular fact that in this latter variety many parts of the plant, namely, the stems, the footstalks of the female flowers, the middle lobe of the leaves, and especially the ovarium, as well as the mature fruit, all show a strong tendency to become elongated. Several varieties of the melon are interesting from as- suming the characteristic features of distinct species and even of distinct though allied genera: thus the serpent-melon has some re- 140 Naudin, in 'Annal. des Sci. Nat.,' 4th ser. Bot. tom. xi. 1859, p. 28. 141 Mémoire sur les Cucurbitacées, 1826, pp. 6, 24. 142 Flore des Serres,' Oct. 1861, quot- ed in Gardener's Chronicle,' 1861, p. 1135. I have also consulted and taken some facts from M. Naudin's Memoir on Cucumis in Annal. des Sc. Nat.,' 4th series, Bot. tom. xi. 1859, p. 5. 143 See also Sageret's "Mémoire,' p. 7. 19 434 CHAP. X. TREES. semblance to the fruit of Trichosanthes anguina; we have seen that other varieties closely resemble cucumbers; some Egyptian varie- ties have their seeds attached to a portion of the pulp, and this is characteristic of certain wild forms. Lastly, a variety of melon from Algiers is remarkable from announcing its maturity by “a sponta- neous and almost sudden dislocation," when deep cracks suddenly appear, and the fruit falls to pieces; and this occurs with the wild C. momordica. Finally, M. Naudin well remarks that this “extra- ordinary production of races and varieties by a single species, and their permanence when not interfered with by crossing, are pheno- mena well calculated to cause reflection." USEFUL AND ORNAMENTAL TREES. TREES deserve a passing notice on account of the numerous varie- ties which they present, differing in their precocity, in their manner of growth, foliage, and bark. Thus of the common ash (Fraxinus excelsior) the catalogue of Messrs. Lawson of Edinburgh includes twenty-one varieties, some of which differ much in their bark; there is a yellow, a streaked reddish-white, a purple, a wart-barked and a fungous-barked variety. 144 Of hollies no less than eighty-four va- rieties are grown alongside each other in Mr. Paul's nursery, In the case of trees, all the recorded varieties, as far as I can find out, have been suddenly produced by one single act of variation. The length of time required to raise many generations, and the little value set on the fanciful varieties, explains how it is that successive modifications have not been accumulated by selection ; hence, also it follows that we do not here meet with sub-varieties subordinate to varieties, and these again subordinate to higher groups. On the Continent, however, where the forests are more carefully attended to than in England, Alph. De Candolle 146 says that there is not a forester who does not search for seeds from that variety which he esteems the most valuable. Our useful trees have seldom been exposed to any great change of conditions; they have not been richly manured, and the English kinds grow under their proper climate. Yet in examining extensive beds of seedlings in nursery-gardens considerable differences may be generally observed in them; and whilst touring in England I have been surprised at the amount of difference in the appearance of the same species in our hedgerows and woods. But as plants (144 Loudon's Arboretum et Frutice- tum,' vol. ii. p. 1217. 145 Gardener's Chron., ' 1866, p. 1096. 148 "Géograph. Bot.,' p. 1096. CHAP. X. 435 TREES. vary so much in a truly wild state, it would be difficult for even a skilful botanist to pronounce whether, as I believe to be the case, hedgerow trees vary more than those growing in a primeval forest. Trees when planted by man in woods or hedges do not grow where they would naturally be able to hold their place against a host of competitors, and are therefore exposed to conditions not strictly natural: even this slight change would probably suffice to cause seedlings raised from such trees to be variable. Whether or not our half-wild English trees, as a general rule, are more variable than trees growing in their native forests, there can hardly be a doubt that they have yielded a greater number of strongly marked and singular variations of structure. In manner of growth, we have weeping or pendulous varieties of the willow, ash, elm, oak, and yew, and other trees; and this weep- ing habit is sometimes inherited, though in a singularly capricious manner. In the Lombardy poplar, and in certain fastigate or pyra- midal varieties of thorns, junipers, oaks, &c., we have an opposite kind of growth. The Hessian oak,147 which is famous from its fasti- gate habit and size, bears hardly any resemblance in general appear- ance to a common oak; "its acorns are not sure to produce plants of the same habit; some, however, turn out the same as the parent-tree.” Another fastigate oak is said to have been found wild in the Pyrenees, and this is a surprising circumstance; it generally comes so true by seed, that De Candolle considered it as specifically distinct.148 The fastigate Juniper (J. suecica) likewise transmits its character by seed.149 Dr. Falconer informs me that in the Botanic Gardens at Calcutta the great heat causes apple-trees to become fastigate; and we thus see the same result following from the effects of climate and from an innate spontaneous tendency.150 In foliage we have variegated leaves which are often inherited ; dark purple or red leaves, as in the hazel, barberry, and beech, the colour in these two latter trees being sometimes strongly and some- times weakly inherited ; 151 deeply-cut leaves; and leaves covered with prickles, as in the variety of the holly well called ferox, which is said to reproduce itself by seed.152 In fact, nearly all the peculiar varieties evince a tendency, more or less strongly marked, to repro- 147 Gardener's Chron.,' 1842, p. 36. 148 Loudon's Arboretum et Fruti- cetum,' vol. iii. p. 1731. 149 Ibid., vol. iv. p. 2489. 150 Godron ('De l'Espèce,' tom. ii. p. 91) describes four varieties of Robinia remarkable from their manner of growth. 151 Journal of a Horticultural Tour, by Caledonian Hort. Soc.,' 1823, p. 107 Alph. De Candolle, 'Géograph. Bot.,' p. 1083. Verlot, Sur la Production des Variétés,' 1865, p. 55, for the Barberrg. 152 Loudon's Arboretum et Frutice- tum,' vol. ii. p. 508. 436 CHAP. X. TREES. " 155 duce themselves by seed.158 This is to a certain extent the case, ac- cording to Bosc, 154 with three varieties of the elm, namely, the broad- leafed, lime-leafed, and twisted elm, in which latter the fibres of the wood are twisted. Even with the heterophyllous hornbeam (Car- pinus betulus), which bears on each twig leaves of two shapes, "several plants raised from seed all retained the same peculiarity.” I will add only one other remarkable case of variation in foliage, namely, the occurrence of two sub-varieties of the ash with simple instead of pinnated leaves, and which generally transmit their cha- racter by seed. 158 The occurrence, in trees belonging to widely dif- ferent orders, of weeping and fastigate varieties, and of trees bearing deeply cut, variegated, and purple leaves, shows that these deviations of structure must result from some very general physiological laws. Differences in general appearance and foliage, not more strongly marked than those above indicated, have led good observers to rank as distinct species certain forms which are now known to be mere varieties. Thus a plane-tree long cultivated in England was con- sidered by almost every one as a North American species; but is now ascertained by old records, as I am informed by Dr. Hooker, to be a variety. So again the Thuja pendula or filiformis was ranked by such good observers as Lambert, Wallich, and others as a true species; but it is now known that the original plants, five in number, suddenly appeared in a bed of seedlings, raised at Mr. Loddige's nursery, from T. orientalis; and Dr. Hooker has adduced excellent evidence that at Turin seeds of T. pendula have reproduced the parent-form, T. orientalis. 157 Every one must have noticed how certain individual trees regular- ly put forth and shed their leaves earlier or later than others of the same species. There is a famous horse-chesnut in the Tuileries which is named from leafing so much earlier than the others. There is also an oak near Edinburgh, which retains its leaves to a very late period. These differences have been attributed by some authors to the nature of the soil in which the trees grow; but Archbishop Whately grafted an early thorn on a late one, and vice versa, and both grafts kept to their proper periods, which differed by about a fortnight, as if they still grew on their own stocks.168 There is a Cornish variety of the elm which is almost an evergreen, and is so 153 Verlot, Des Variétés,' 1865, p. 92. 154 Loudon's Arboretum et Frutice- tum,' vol. iii. p. 1376. 155 Gardener's Chronicle;' 1841, p. 687. 156 Godron, 'De l'Espèce,' tom. ii. p. 69. In Loudon's Gardener's Mag., vol. xii. 1836, p. 371, a variegated bushy ash is described and figured, as having sim- ple leaves; it originated in Ireland. 157 Gardener's Chron.,' 1861, p. 575. 158 Quoted from Royal Irish Academy in Gardener's Chron.,' 1841, p. 767. CHAP. X. 437 TREES. 159 tender that the shoots are often killed by the frost ; and the varie- ties of the Turkish oak (Q. cerris) may be arranged as deciduous, sub-evergreen, and evergreen. Scotch Fir (Pinus sylvestris).-I ailude to this tree as it bears on the question of the greater variability of our hedgerow trees com- pared with those under strictly natural conditions. A well-informed writer 150 states that the Scotch fir presents few varieties in its na- tive Scotch forests; but that it “varies much in figure and foliage, “and in the size, shape, and colour of its cones, when several gen- "erations have been produced away from its native locality." There is little doubt that the highland and lowland varieties differ in the value of their timber, and that they can be propagated truly by seed; thus justifying Loudon's remark, that " a variety is often of as much importance as a species, and sometimes far more so." 161 I may mention one rather important point in which this tree occa- sionally varies; in the classification of the Coniferæ, sections are founded on whether two, three, or five leaves are included in the same sheath; the Scotch fir has properly only two leaves thus en- closed, but specimens have been observed with groups of three leaves in a sheath. 162 Besides these differences in the semi-culti- vated Scotch fir, there are in several parts of Europe natural or geo- graphical races, which have been ranked by some authors as dis- tinct species. 103 Loudon 164 considers P. pumilio, with its several sub-varieties, as Mughus, nana, &c., which differ much when planted in different soils and only come “tolerably true from seed," as alpine varieties of the Scotch fir; if this were proved to be the case, it would be an interesting fact as showing that dwarfing from long exposure to a severe climate is to a certain extent inherited. The Hawthorn (Crataegus oxycantha) has varied much. Besides endless slighter variations in the form of the leaves, and in the size, hardness, fleshiness, and shape of the berries, Loudon 165 enumerates twenty-nine well-marked varieties. Besides those cultivated for their pretty flowers, there are others with golden-yellow, black, and whitish berries; others with woolly berries, and others with re- curved thorns. Loudon truly remarks that the chief reason why 159 Loudon's Arboretum et Frutice- päischer Pinus-arten von Dr. Christ : tum:' for Elm, see vol. iii. p. 1376; for Flora, 1864.' He shows that in the Ober- Oak, p. 1846. Engadin P. sylvestris and montana are 160 Gardener's Chronicle,' 1849, p. connected by intermediate links. 822. 164 · Arboretum et Fruticetum,' vol. 161 Arboretum et Fruticetum,' vol. iv. iv. pp. 1159 and 2189. 165 Ibid., vol. ii. p. 830; Loudon's 162 Gardener's Chron.,' 1852, p. 693. Gardener's Magazine,' vol. vi, 1830, p. 163 See Beiträge zur Kentniss Euro- 714. p. 2150. 438 CHAP. X. FLOWERS. the hawthorn has yielded more varieties than most other trees, is that curious nurserymen select any remarkable variety out of the immense beds of seedlings which are annually raised for making hedges. The flowers of the Hawthorn usually include from one to three pistils; but in two varieties, named Monogyna and Sibirica, there is only a single pistil; and d’Asso states that the common thorn in Spain is constantly in this state.166 There is also a variety which is apetalous, or has its petals reduced to mere rudiments. The famous Glastonbury thorn flowers and leafs towards the end of December, at which time it bears berries produced from an earlier crop of flowers. 107 It is worth notice that several varieties of the hawthorn, as well as of the lime and juniper, are very distinct in their foliage and habit whilst young, but in the course of thirty or forty years become extremely like each other ; 168 thus reminding us of the well-known fact that the deodar, the cedar of Lebanon, and that of the Atlas, are distinguished with the greatest ease whilst young, but with difficulty when old. FLOWERS I SHALL not for several reasons treat the variability of plants which are cultivated for their flowers alone at any great length. Many of our favourite kinds in their present state are the descendants of two or more species crossed and commingled together, and this circum- stance alone would render it difficult to detect the differences due to variation. For instance, our Roses, Petunias, Calceolarias, Fuchsias, Verbenas, Gladioli, Pelargoniums, &c., certainly have had a multiple origin. A botanist well acquainted with the parent-forms would probably detect some curious structural differences in their crossed and cultivated descendant; and he would certainly observe many new and remarkable constitutional peculiarities. I will give a few instances, all relating to the Pelargonium, and taken chiefly from Mr. Beck, 169 a famous cultivator of this plant: some varieties re. quire more water than others; some are "very impatient of the knife if too greedily used in making cuttings;" some, when potted, scarcely "show a root at the outside of the ball of the earth;" one variety requires a certain amount of confinement in the pot to make it throw up a flower-stem ; some varieties bloom well at the com- mencement of the season, others at the close; one variety is known,170 which will stand "even pine-apple top and bottom heat, 166 Loudon's Arboretum et Frutice- tum,' vol. ii. p. 834. 187 Loudon's Gardener's Mag.,' vol. ix. 1833, p. 123. 168 Ibid., vol. xi. 1835, p. 503. 169 Gardener's Chron.,'1845, p. 623. 170 D. Beaton, in 'Cottage Gardener,' 1860, p. 377. See also Mr. Beck, on the CHAP. X. 439 FLOWERS. without looking any more drawn than if it had stood in a common greenhouse; and Blanche Fleur seems as if made on purpose for growing in winter, like many bulbs, and to rest all summer." These odd constitutional peculiarities would fit a plant when grow- ing in a state of nature for widely different circumstances and climates. Flowers possess little interest under our present point of view, because they have been almost exclusively attended to and selected for their beautiful colours, size, perfect outline, and manner of growth. In these particulars hardly one long-cultivated flower can be named which has not varied greatly. What does a florist care for the shape and structure of the organs of fructification, unless, indeed, they add to the beauty of the flower? When this is the case, flowers become modified in important points; stamens and pistils may be converted into petals, and additional petals may be developed, as in all double flowers. The process of gradual selection by which fiowers have been rendered more and more double, each step in the process of conversion being inherited, has been recorded in several instances. In the so-called double flowers of the Compositæ, the corollas of the central florets are greatly modified, and the modifi. cations are likewise inherited. In the columbine (Aquilegia vulgaris) some of the stamens are converted into petals having the shape of nectaries, one neatly fitting into the other; but in one variety they are converted into simple petals.171 In the hose and hose primulæ, the calyx becomes brightly coloured and enlarged so as to resemble a corolla ; and Mr. W. Wooler informs me that this peculiarity is transmitted; for he crossed a common polyanthus with one having a coloured calyx, 172 and some of the seedlings inherited the coloured calyx during at least six generations. In the "hen-and-chicken” daisy the main flower is surrounded by a brood of small flowers de- veloped from buds in the axils of the scales of the involucre. A wonderful poppy has been described, in which the stamens are con- verted into pistils; and so strictly was this peculiarity inherited that, out of 154 seedlings, one alone reverted to the ordinary and common type.173 of the cock’s-comb (Celosia cristata), which is an annual, there are several races in which the flower-stem is wonderfully “fasciated” or compressed ; and one has been exhibited 174 actually eighteen inches in breadth. Peloric races of Gloxinia speciosa and p. 133. habits of Queen Mab, in Gardener's Chronicle,' 1845, p. 226. 173 Quoted by Alph. de Candolle, 171 Moquin-Tandon, 'Eléments de "Bibl. Univ.,' November, 1862, p. 58. Tératologie,' 1841, p. 213. 174 Knight, Transact. Hort. Soc.,' vol. 172 See also Cottage Gardener, '1860, iv. p. 322. 440 CHAP. X. FLOWERS. Antirrhinum majus can be propagated by seed, and they differ in a wonderful manner from the typical form both in structure and ap- pearance. A much more remarkable modification has been recorded by Sir William and Dr. Hooker 175 in Begonia frigida. This plant properly produces male and female flowers on the same fascicles; and in the female flowers the perianth is superior ; but a plant at Kew produced, besides the ordinary flowers, others which graduated towards a per- fect hermaphrodite structure, and in these flowers the perianth was inferior. To show the importance of this modification under a classi- ficatory point of view, I may quote what Prof. Harvey says, namely, that had it " occurred in a state of nature, and had a botanist col- lected a plant with such flowers, he would not only have placed it in a distinct genus from Begonia, but would probably have con- sidered it as the type of a new natural order.” This modification cannot in one sense be considered as a monstrosity, for analogous structures naturally occur in other orders, as with Saxifragas and Aristolochiaceæ. The interest of the case is largely added to by Mr. C. W. Crocker's observation that seedlings from the normal flowers produced plants which bore, in about the same proportion as the parent-plant, hermaphrodite flowers having inferior perianths. The hermaphrodite flowers fertilised with their own pollen were sterile. If florists had attended to, selected, and propagated by seed other modifications of structure besides those which are beautiful, a host of curious varieties would certainly have been raised; and they would probably have transmitted their characters so truly that the cultivator would have felt aggrieved, as in the case of culinary vegetables, if his whole bed had not presented a uniform appearance. Florists have attended in some instances to the leaves of their plant, and have thus produced the most elegant and symmetrical patterns of white, red, and green, which, as in the case of the pelargonium, are sometimes strictly inherited.176 Any one who will habitually examine highly-cultivated flowers in gardens and greenhouses will observe numerous deviations in structure; but most of these must be ranked as mere monstrosities, and are only so far interesting as showing how plastic the organisation becomes under high cultivation. From 175 Botanical Magazine,' tab. 5160, fig. 4; Dr. Hooker, in *Gardener's Chron.,' 1860, p. 190; Prof. Harvey, in Gardener's Chron.,' 1860, p. 145; Mr. Crocker, in 'Gardener's Chron.,' 1861, Bot.,' p. 1083; 'Gard. Chronicle,' 1861, p. 433. The inheritance of the white and golden zones in Pelargonium largely depends on the nature of the soil. See D. Beaton, in Journal of Horticulture, 1861, p. 64. p. 1092. 176 Alph. de Candolle, 'Géograph. CHAP. X. *441 FLOWERS. this point of view such works as Professor Moquin-Tandon's Téra- tologie' are highly instructive. Roses. These flowers offer an instance of a number of forms generally ranked as species, namely, R. centifolia, gallica, alba, da- mascena, spinosissima, bracteata, Indica, semperflorens, moschata, &c., which have largely varied and been intercrossed. The genus Rosa is a notoriously difficult one, and though some of the above forms are admitted by all botanists to be distinct species, others are doubt- ful; thus, with respect to the British forms, Babington makes seven- teen, and Bentham only five species. The hybrids from some of the most distinct forms—for instance, from R. Indica, fertilised by the pollen of R. centifolia-produce an abundance of seed; I state this on the authority of Mr. Rivers, 177 from whose work I have drawn most of the following statements. As almost all the aboriginal forms brought from different countries have been crossed and re- crossed, it is no wonder that Targioni-Tozzetti, in speaking of the common roses of the Italian gardens, remarks that "the native country and precise form of the wild type of most of them are in- volved in much uncertainty.” 178 Nevertheless Mr. Rivers in refer- ring to R. Indica (p. 68) says that the descendants of each group may generally be recognised by a close observer. The same author often speaks of roses as having been a little hybridised ; but it is evident that in very many cases the differences due to variation and to hybridisation can now only be conjecturally distinguished. The species have varied both by seed and by buds; such modified buds being often called by gardeners sports. In the following chap- ter I shall fully discuss this latter subject, and shall show that bud- variations can be propagated not only by grafting and budding, but often even by seed. Whenever a new rose appears with any pecu- liar character, however produced, if it yields seed, Mr. Rivers (p. 4) fully expects it to become the parent-type of a new family. The tendency to vary is so strong in some kinds, as in the Village Maid (Rivers, p. 16), that when grown in different soils it varies so much in colour that it has been thought to form several distinct kinds. Altogether the number of kinds is very great: thus M. Desportes, in his Catalogue for 1829, enumerates 2562 as cultivated in France; but no doubt a large proportion of these are merely nominal. It would be useless to specify the many points of difference be- tween the various kinds, but some constitutional peculiarities may be mentioned. Several French roses (Rivers, p. 12) will not succeed 178 Journal Hort. Soc.,' vol. ix, 1855, 177 Rose Amateur's Guide,' T. Rivers, 1887, p. 21. p. 182. 19* 442 CHAP. X. FLOWERS. in England; and an excellent horticulturist 179 remarks, that "Even in the same garden you will find that a rose that will do nothing under a south wall will do well under a north one. That is the case with Paul Joseph here. It grows strongly and blooms beautifully close to a north wall. For three years seven plants have done noth- ing under a south wall.” Many roses can be forced,“ many are to- tally unfit for forcing, among which is General Jacqueminot.” 180 From the effects of crossing and variation Mr. Rivers enthusiastically anticipates (p. 87) that the day will come when all our roses, even moss-roses, will have evergreen foliage, brilliant and fragrant flowers, and the habit of blooming from June till November. "A distant view this seems, but perseverance in gardening will yet achieve wonders," as assuredly it has already achieved wonders. It may be worth while briefly to give the well-known history of one class of roses. In 1793 some wild Scotch roses (R. spinosissima) were transplanted into a garden ; 181 and one of these bore flowers slightly tinged with red, from which a plant was raised with semi- monstrous flowers, also tinged with red; seedlings from this flower were semi-double, and by continued selection, in about nine or ten years, eight sub-varieties were raised. In the course of less than twenty years these double Scotch roses had so much increased in number and kind, that twenty-six well-marked varieties, classed in eight sections, were described by Mr. Sabine. In 1841 182 it is said that three hundred varieties could be procured in the nursery-gar- dens near Glasgow; and these are described as blush, crimson, pur- ple, red, marbled, two-coloured, white, and yellow, and as differing much in the size and shape of the flower. Pansy or Heartsease (Viola tricolor, &c.).—The history of this flower seems to be pretty well known; it was grown in Evelyn's garden in 1687; but the varieties were not attended to till 1810– 1812, when Lady Monke, together with Mr. Lee the well-known nurseryman, energetically commenced their culture, and in the course of a few years twenty varieties could be purchased.183 At about the same period, namely in 1813 or 1814, Lord Gambier col- lected some wild plants, and his gardener, Mr. Thomson, cultivated them together with some common garden varieties, and soon effect- ed a great improvement. The first great change was the conversion 179 The Rev. W.F. Radclyffe, in 'Jour- nal of Horticulture,' March 14, 1865, p. 207. 180 Gardener's Chronicle,' 1861, p. 46. 181 Mr. Sabine, in Transact. Hort. Soc.,' vol. iv. p. 285. 182 An Encyclop. of Plants,' by J. O. Loudon, 1841, p. 443. 183 Loudon's Gardener's Magazine, vol. xi. 1835, p. 427; also Journal of Horticulture,' April 14, 1863, p. 275. CHAP. X. 443 FLOWERS. of the dark lines in the centre of the flower into a dark eye or centre, which at that period had never been seen, but is now considered one of the chief requisites of a first-rate flower. In 1835 a book entirely devoted to this flower was published, and four hundred named varieties were on sale. From these circumstances this plant seemed to me worth studying, more especially from the great con- trast between the small, dull, elongated, irregular flowers of the wild pansy, and the beautiful, flat, symmetrical, circular, velvet-like flowers, more than two inches in diameter, magnificently and va- riously coloured, which are exhibited at our shows. But when I came to inquire more closely, I found that, though the varieties were so-modern, yet that much confusion and doubt prevailed about their parentage. Florists believed that the varieties 184 are descended from several wild stocks, namely, V. tricolor, lutea, grandiflora, amana, and Altaica, more or less intercrossed. And when I looked to botanical works to ascertain whether these forms ought to be rank- ed as species, I found equal doubt and confusion. Viola Altaica seems to be a distinct form, but what part it has played in the origin of our varieties I know not; it is said to have been crossed with V. lutea. Viola amana is now looked by all botanists as a natural variety of V. grandiflora ; and this and V. sudetica have been proved to be identical with V. lutea. The latter and V. tricolor (including its admitted variety V. arvensis) are ranked as distinct species by Babington ; and likewise by M. Gay,186 who has paid par- ticular attention to the genus; but the specific distinction between V. lutea and tricolor'is chiefly grounded on the one being strictly and the other not strictly perennial, as well as on some other slight and unimportant differences in the form of the stem and stipules. Bentham unites these two forms; and a high authority on such mat- ters, Mr. H. C. Watson, 187 says 'that, “while V. tricolor passes into V. arvensis on the one side, it approximates so much towards V. lu- tea and V. Curtisii on the other side, that a distinction becomes scarcely more easy between them." Hence, after having carefully compared numerous varieties, I gave up the attempt as too difficult for any one except a professed botanist. Most of the varieties present such inconstant characters, that when grown in poor soil, or when flowering out of their 185 184 Loudon's Gardener's Magazine, vol. viii. p. 575 ; vol. ix. p. 689. 185 Sir J. E. Smith, English Flora,' vol. i. p. 306. H. C. Watson, Cybele Britannica,' vol. i. 1847, p. 181. 186 Quoted from Annales des Sci- ences,' in the Companion to the 'Bot. Mag.,' vol. i. 1835, p. 159. 187 Cybele Britannica,' vol. i. p. 178. See also Dr. Herbert on the changes of colour in transplanted specimens, and on the natural variations of V. grandi- flora, in Transact. Hort. Soc.,' vol. iv. p. 19. 444 CHAP. X. FLOWERS. proper season, they produce differently coloured and much smaller flowers. Cultivators speak of this or that kind as being remarkably constant or true; but by this they do not mean, as in other cases, that the kind transmits its character by seed, but that the individual plant does not change much under culture. The principle of in- heritance, however, does hold good to a certain extent even with the fleeting varieties of the Heartease, for to gain good sorts it is indis- pensable to sow the seed of good sorts. Nevertheless in every large seed-bed a few almost wild seedlings often reappear through rever sion. On comparing the choicest varieties with the nearest allied wild forms, besides the difference in the size, outline, and colour of the flowers, the leaves are seen sometimes to differ in shape, as does the calyx occasionally in the length and breadth of the sepals. The differences in the form of the nectary more especially deserve notice; because characters derived from this organ have been much used in the discrimination of most of the species of Viola. In a large num- ber of flowers compared in 1842 I found that in the greater number the nectary was straight; in others the extremity was a little turned upwards, or downwards, or inwards, so as to be completely hooked ; in others, instead of being hooked, it was first turned rectangularly downwards, and then backwards and upwards; in others the ex- tremity was considerably enlarged ; and lastly, in some the basal part was depressed, becoming, as usual, laterally compressed to- wards the extremity. In a large number of flowers, on the other hand, examined by me in 1856 from a nursery-garden in a different part of England, the nectary hardly varied at all. Now M. Gay says that in certain districts, especially in Auvergne, the nectary of wild V.grandiflora varies in the manner just described. Must we conclude from this that the cultivated varieties first mentioned were all descended from V. grandiflora, and that the second lot, though having the same general appearance, were descended from V. tri- color, of which the nectary, according to M. Gay, is subject to little variation? Or is it not more probable that both these wild forms would be found under other conditions to vary in the same manner and degree, thus showing that they ought not to be ranked as specifically distinct ? The Dahlia has been referred to by almost every author who has written on the variation of plants, because it is believed that all the varieties are descended from a single species, and because all have arisen since 1802 in France, and since 1804 in England.188 Mr. Sabine remarks that "it seems as if some period of cultivation had 188 Salisbury, in Transact. Hort. Soc.,' vol. i. 1912, pp. 84, 92. A semi-double variety was produced in Madrid in 1790. CHAP. X. 445 FLOWERS. been required before the fixed qualities of the native plant gave way and began to sport into those changes which now so delight us.” 189 The flowers have been greatly modified in shape from a flat to a globular form. Anemone and ranunculus-like races, 190 which differ in the form and arrangement of the florets, have arisen ; also dwarfed races, one of which is only eighteen inches in height. The seeds vary much in size. The petals are uniformly coloured or tipped or striped, and present an almost infinite diversity of tints. Seedlings of fourteen different colours 191 have been raised from the same plant; yet, as Mr. Sabine has remarked, "many of the seed- lings follow their parents in colour.” The period of flowering has been considerably hastened, and this has probably been effected by continued selection. Salisbury, writing 1808, says that they then flowered from September to November; in 1828 some new dwarf varieties began flowering in June ; 192 and Mr. Grieve informs me that the dwarf purple Zelinda in his garden is in full bloom by the middle of June and sometimes even earlier. Slight constitutional differences have been observed between certain varieties: thus, some kinds succeed much better in one part of England than in another,193 and it has been noticed that some varieties require much more mois- ture than others. Such flowers as the carnation, common tulip, and hyacinth, which are believed to be descended, each from a single wild form, present innumerable varieties, differing almost exclusively in the size, form, and colour of the flowers. These and some other anciently cultivated plants which have been long propagated by offsets, pipings, bulbs, &c., become so excessively variable, that almost each new plant raised from seed forms a new variety, "all of which to describe particularly," as old Gerarde wrote in 1597,"were to roll Sisyphus's stone, or to number the sands." Hyacinth (Hyacinthus orientalis).-It may, however, be worth while to give a short account of this plant, which was introduced into England in 1596 from the Levant.195 The petals of the original flower, says Mr. Paul, were narrow, wrinkled, pointed, and of a flimsy texture; now they are broad, smooth, solid, and rounded. 194 193 Mr. Wildman, in Gardener's Chron.,' 1843, p. 87. 194 Cottage Gardener,' April 8, 1856, p. 33. 189 Transact. Hort. Soc.,' vol. iii. 1920, p. 225. 190 Loudon's Gardener's Mag.,' vol. vi. 1830, p. 77. 191 Loudon's 'Encyclop. of Garden- ing,' p. 1035. 192 Transact. Hort. Soc.,' vol. i. p. 91 ; and Loudon's Gardener's Mag.,' vol. ii. 1828, p. 179. 195 The best and fullest account of this plant which I have met with is by a famous horticulturist, Mr. Paul of Waltham, in the Gardener's Chronicle,' 1864, p. 342. 446 CHAP. X. FLOWERS. 66 The erectness, breadth, and length of the whole spike, and the size of the flowers, have all increased. The colours have been intensified and diversified. Gerarde, in 1597, enumerates four, and Parkinson, in 1629, eight varieties. Now the varieties are very numerous, and they were still more numerous a century ago. Mr. Paul remarks that "it is interesting to compare the Hyacinths of 1629 with those “of 1864, and to mark the improvement. Two hundred and thirty- “ five years have elapsed since then, and this simple flower serves “well to illustrate the great fact that the original forms of nature “ do not remain fixed and stationary, at least when brought under "cultivation. While looking at the extremes, we must not how- ever forget that there are intermediate stages which are for the “most part lost to us. Nature will sometimes indulge herself with "a leap, but as a rule her march is slow and gradual.” He adds that the cultivator should have "in his mind an ideal of beauty, for “the realisation of which he works with head and hand.” We thus see how clearly Mr. Paul, an eminently successful cultivator of this flower, appreciates the action of methodical selection. In a curious and apparently trustworthy treatise, published at Amsterdam 196 in 1768, it is stated that nearly 2000 sorts were then known; but in 1864 Mr. Paul found only 700 in the largest garden at Haarlem. In this treatise it is said that not an instance is known of any one variety reproducing itself truly by seed: the white kinds, however, now 197 almost always 'yield white hyacinths, and the yel- low kinds come nearly true. The hyacinth is remarkable from hav- ing given rise to varieties with bright blue, pink, and distinctly yellow flowers. These three primary colours do not occur in the varieties of any other species; nor do they often all occur even in the distinct species of the same genus. Although the several kinds of hyacinths differ but slightly from each other except in colour, yet each kind has its own individual character, which can be recognised by a highly educated eye; thus the writer of the Amsterdam trea- tise asserts (p. 43) that some experienced florists, such as the famous G. Voorholm, seldom failed in a collection of above twelve hundred sorts to recognise each variety by the bulb alone! This same writer mentions some few singular variations: for instance, the hyacinth commonly produces six leaves, but there is one kind (p. 35) which scarcely ever has more than three leaves; another never more than five; whilst others regularly produce either seven or eight leaves. A variety, called la Coriphée, invariably produces (p. 116) two flower- 198 Des Jacinthes, de leur Anatomie, Reproduction, et Culture,' Amsterdam, 1768 197 Alph. de Candolle, 'Géograph. Bot.,' p. 1082. CHAP. X. 447 FLOWERS. stems, united together and covered by one skin. The flower-stem in another kind (p. 128) comes out of the ground in a coloured sheath, before the appearance of the leaves, and is consequently lia- ble to suffer from frost. Another variety always pushes a second flower-stem after the first has begun to develop itself. Lastly, white hyacinths with red, purple, or violet centres (p. 129) are the most liable to rot. Thus, the hyacinth, like so many previous plants, when long cultivated and closely watched, is found to offer many singular variations. In the two last chapters I have given in some detail the range of variation, and the history, as far as known, of a considerable number of plants, which have been cul- tivated for various purposes. But some of the most va- riable plants, such as Kidney-beans, Capsicum, Millets, Sorghum, &c., have been passed over; for botanists are not agreed which kinds ought to rank as species and which as varieties; and the wild parent-species are un- known.198 Many plants long cultivated in tropical coun- tries, such as the Banana, have produced numerous varie- ties; but as these have never been described with even moderate care, they also are here passed over. Never- theless a sufficient, and perhaps more than sufficient, num- ber of cases have been given, so that the reader may be enabled to judge for himself on the nature and extent of the variation which cultivated plants have undergone. 198 Alph, de Candolle, Géograph. Bot.,' p. 983. 448 CHAP, XI. BUD-VARIATION CHAPTER XI. ON BUD-VARIATION, AND ON CERTAIN ANOMALOUS MODES OF REPRODUCTION AND VARIATION. BUD-VARIATIONS IN THE PEACH, PLUM, CHIERRY, VINE, GOOSE- BERRY, CURRANT, AND BANANA, AS SHOWN BY THE MODIFIED FRUIT — IN FLOWERS: CAMELLIAS, AZALEAS, CHRYSANTHEMUMS, ROSES, ETC. ON THE RUNNING OF THE COLOUR IN CARNATIONS -BUD-VARIATIONS IN LEAVES - VARIATIONS BY SUCKERS, TU- LERS, AND BULBS — ON THE BREAKING OF TULIPS — BUD-VARIA- TIONS GRADUATE INTO CHANGES CONSEQUENT ON CHANGED CONDITIONS OF LIFE - CYTISUS ADAMI, ITS ORIGIN AND TRANS- FORMATION - ON THE UNION OF TWO DIFFERENT EMBRYOS IN ONE SEED --THE TRIFACIAL ORANGE-ON REVERSION BY BUDS IN HYBRIDS AND MONGRELS - ON THE PRODUCTION OF MODIFIED BUDS BY THE GRAFTING OF ONE VARIETY OR SPECIES ON ANOTHER — ON THE DIRECT OR IMMEDIATE ACTION OF FOREIGN POLLEN ON THE MOTHER-PLANT -- ON THE EFFECTS IN FEMALE ANIMALS OF A FIRST IMPREGNATION ON THE SUBSEQUENT OFF- SPRING - CONCLUSION AND SUMMARY. Tuis chapter will be chiefly devoted to a subject in many respects important, namely, bud-variation. By this term I include all those sudden changes in structure or ap- pearance which occasionally occur in full-grown plants in their flower-buds or leaf-buds. Gardeners call such changes “Sports;" but this, as previously remarked, is an ill-defined expression, as it has often been applied to strongly marked variations in seedling plants. The dif- ference between seminal and bud reproduction is not so great as it at first appears; for each bud is in one sense a new and distinct individual; but such indi- viduals are produced through the formation of various CHAP. XI. 449 FRUIT. kinds of buds without the aid of any special apparatus, whilst fertile seeds are produced by the concourse of the two sexual elements. The modifications which arise through bud-variation can generally be propagated to any extent by grafting, budding, cuttings, bulbs, &c., and occasionally even by seed. Some few of our most beautiful and useful productions have arisen by bud- variation. Bud-variations have as yet been observed only in the vegetable kingdom; but it is probable that if compound animals, such as corals, &c., had been subjected to a long course of domestication, they would have varied by buds; for they resemble plants in many respects. Thus any new or peculiar character presented by a compound animal is propagated by budding, as occurs with differ- ently coloured Hydras, and as Mr. Gosse has shown to be the case with a singular variety of a true coral. Va- rieties of the Hydra have also been grafted on other varieties, and have retained their character. I will in the first place give all the cases of bud-varia- tions which I have been able to collect, and afterwards show their importance. These cases prove that those * authors who, like Pallas, attribute all variability to the crossing either of distinct races, or of individuals belong- ing to the same race but somewhat different from each other, are in error; as are those authors who attribute all variability to the mere act of sexual union. Nor can we account in all cases for the appearance through bud- variation of new characters by the principle of reversion to long-lost characters. He who wishes to judge how far the conditions of life directly cause each particular variation ought to reflect well on the cases immediately to be given. I will commence with bud-variations, as exhibited in the fruit, and then pass on to flowers, and finally to leaves. Peach (Amygdalus Persica).-In the last chapter I gave two 450 СНАР. XI, BUD-VARIATION. cases of a peach-almond and double-flowered almond which sudden- ly produced fruit closely resembling true peaches. I have also recorded many cases of peach-trees producing buds, which, when developed into branches, have yielded nectarines. We have seen that no less than six named and several unnamed varieties of the peach have thus produced several varieties of nectarine. I have shown that it is highly improbable that all these peach-trees, some of which are old varieties, and have been propagated by the mil- lion, are hybrids from the peach and nectarine, and that it is opposed to all analogy to attribute the occasional production of nectarines on peach-trees to the direct action of pollen from some neighbouring nectarine-tree. Several of the cases are highly re- markable, because, firstly, the fruit thus produced has sometimes been in part a nectarine and in part a peach ; secondly, because nectarines thus suddenly produced have reproduced themselves by seed ; and thirdly, because nectarines are produced from peach-trees from seed as well as from buds. The seed of the nectarine, on the other hand, occasionally produces peaches; and we have seen in one instance that a nectarine-tree yielded peaches by bud-variation. As the peach is certainly the oldest or primary variety, the pro- duction of peaches from nectarines, either by seeds or buds, may perhaps be considered as a case of reversion. Certain trees have also been described as indifferently bearing peaches or nectarines, and this may be considered as bud-variation carried to an extreme degree. The grosse mignonne peach at Montreuil produced “from a sport- ing branch” the grosse mignonne tardive, “a most excellent varie- ty," which ripens its fruit a fortnight later than the parent tree, and is equally good. This same peach has likewise produced by bud-variation the early grosse mignonne. Hunt's large tawny nec- tarine originated from Hunt's small tawny nectarine, but not through seminal reproduction."2 Plums.-Mr. Knight states that a tree of the yellow magnum bonum plum, forty years old, which had always borne ordinary fruit, produced a branch which yielded red magnum bonums. Mr. Rivers, of Sawbridgeworth, informs me (Jan. 1863) that a sin- gle tree out of 400 or 500 trees of the Early Prolific plum, which is a purple kind, descended from an old French variety bearing purple fruit, produced when about ten years old bright yellow plums; these differed in no respect except colour from those on 1 Gardener's Chron.,' 1854, p. 821. 2 'Lindley's Guide to Orchard,' as quoted in Gard. Chronicle,' 1852. p. 821. For the Early mignonne peach, see Gardener's Chron.,'1864, p. 1251. 3. Transact. Hort. Soc.,' vol. ii. p. 160. CHAP. XI. 451 FRUIT. the other trees, but were unlike any other known kind of yellow plum. Cherry (Prunus cerasus).—Mr. Knight has recorded (idem) the case of a branch of a May-Duke cherry, which, though certainly never grafted, always produced fruit, ripening later, and more ob- long, than the fruit on the other branches, Another account has been given of two May-Duke cherry-trees in Scotland, with branches bearing oblong, and very fine fruit, which invariably ripened, as in Knight's case, a fortnight later than the other cherries. Grapes (vitis vinifera).—The black or purple Frontignan in one case produced during two successive years (and no doubt perma- nently) spurs which bore white Frontignan grapes. In another case, on the same foot-stalk, the lower berries" were well-coloured black Frontignans; those next the stalk were white, with the ex- ception of one black and one streaked berry;" and altogether there were fifteen black and twelve white berries on the same stalk. In another kind of grape black and amber-coloured berries were pro- duced in the same cluster. Count Odart describes a variety which often bears on the same stalk small round and large oblong ber- ries; though the shape of the berry is generally a fixed character. Here is another striking case given on the excellent authority of M. Carrière :8 "a black Hamburgh grape (Frankenthal) was cut down, and produced three suckers; one of these was layered, and after a time produced much smaller berries, which always ripened at least a fortnight earlier than the others. Of the remaining two suckers, one produced every year fine grapes, whilst the other, although it set an abundance of fruit, matured only a few, and these of inferior quality. Gooseberry (Ribes grossularia).-A remarkable case has been de- scribed by Dr. Lindley of a bush which bore at the same time no less than four kinds of berries, namely, hairy and red,-smooth, small and red-green,-and yellow tinged with buff; the two lat- ter kinds had a different flavour from the red berries, and their seeds were coloured red. Three twigs on this bush grew close together; the first bore three yellow berries and one red; the second twig bore four yellow and one red ; and the third four red and one yellow. Mr. Laxton also informs me that he has seen a 4 See alsoGardener's Chron.,' 1863, p. 27. 5 Gard. Chron.,' 1552, p. 821. 6 Gardener's Chron.,' 1852, p. 629; 1856, p. 643 ; 18€4, p. 986. Other cases are given by Braun, 'Rejuvenescence,' in 'Ray Soc. Bot. Mem.,' 1853, p. 314. 7 'Ampelographie,' &c., 1849, p. 71. 8 Gardener's Chronicle,'1866, p. 970. 9 Gardener's Chronicle, 1855, pp. 597, 612. 452 CHAP. XT BUD-VARIATION. Red Warrington gooseberry bearing both red and yellow fruit on the same branch. Currant (Ribes rubrum).- A bush purchased as the Champagne, which is a variety that bears blush-coloured fruit intermediate be- tween red and white, produced during fourteen years, on separate branches and mingled on the same branch, berries of the red, white, and champagne kinds.20 The suspicion naturally arises that this variety may have originated from a cross between a red and white variety, and that the above transformation may be accounted for by reversion to both parent-forms; but from the foregoing complex case of the gooseberry this view is doubtful. In France, a branch of a red-currant bush, about ten years old, produced near the summit five white berries, and lower down, amongst the red berries, one berry half red and half white. Alexander Braun 12 also has often seen branches bearing red ber- ries on white currants. Pear (Pyrus communis).—Dureau de la Malle states that the flowers on some trees of an ancient variety, the doyenné galeux, were destroyed by frost: other flowers appeared in July, which produced six pears; these exactly resembled in their skin and taste the fruit of a distinct variety, the gros doyenné blanc, but in shape were like the bon-chrétien : it was not ascertained whe- ther this new variety could be propagated by budding or grafting. The same author grafted a bon-chrétien on a quince, and it pro- duced, besides its proper fruit, an apparently new variety, of a peculiar form, with thick and rough skin.13 Apple (Pyrus malus).-In Canada, a tree of the variety called Pound Sweet, produced, 14 between two of its proper fruit, an ap- ple which was well russetted, small in size, different in shape, and with a short peduncle. As no russet apple grew anywhere near, this case apparently cannot be accounted for by the direct action of foreign pollen. I shall hereafter give cases of apple-trees which regularly produce fruit of two kinds, or half-and-half fruit; these trees are generally supposed, and probably with truth, to be of crossed parentage, and that the fruit reverts to both parent-forms. Banana (Musa sapientium).—Sir R. Schomburgk states that he 10. Gardener's Chron.,' 1842, p. 873; 1855, p. 646. In the Chronicle,' 1866, p. 876, Mr. P. Mackenzie states that the bush still continues to bear the three kinds of fruit, although they have not been every year alike." 11 Revue Horticole,' quoted in Gard: Chronicle,' 1844, p. 87. 12 'Rejuvenescence in Nature, Bot. Memoirs Ray Soc.,' 1853, p. 314. 13 Comptes Rendus,' tom. xli., 1855, p. 804. The second case is given on the authority of Gaudichaud, idem, tom. xxxiv., 1852, p. 748. 14 This case is given in the Gard, Chronicle,' 1867, p. 403. CH2P. XI. 453 FLOWERS. saw in St. Domingo a raceme on the Fig Banana which bore towards the base 125 fruits of the proper kind; and these were succeeded, as is usual, higher up the raceme, by barren flowers, and these by 420 fruits, having a widely different appearance, and ripen- ing earlier than the proper fruit. The abnormal fruit closely re- sembled, except in being smaller, that of the Musa Chinensis or Cavendishi, which has generally been ranked as a distinct species. 15 FLOWERS.- Many cases have been recorded of a whole plant, or single branch, or bud, suddenly producing flowers different from the proper type in colour, form, size, doubleness, or other character. Half the flower, or a smaller segment, sometimes changes colour. Camellia. -The myrtle-leaved species (C. myrtifolia), and two or three varieties of the common species, have been known to produce hexagonal and imperfectly quadrangular flowers; and the branches producing such flowers have been propagated by grafting 16 The Pompone variety often bears" four distinguishable kinds of flowers, “the pure white and the red-eyed, which appear promiscuously; the “brindled pink and the rose-coloured, which may be kept separate “with tolerable certainty by grafting from the branches that bear "them.” A branch, also, on an old tree of the rose-coloured variety has been seen to "revert to the pure white colour, an occurrence less “common than the departure from it.” 17 Cratægus oxycantha.— A dark pink hawthorn has been known to throw out a single tuft of pure white blossoms; 18 and Mr. A. Clap- ham, nurseryman, of Bradford, informs me that his father had a deep crimson thorn grafted on a white thorn, which, during several years, always bore, high above the graft, bunches of white, pink, and deep crimson flowers. Azalea Indica is well known often to produce by buds new varie ties. I have myself seen several cases. A plant of Azalea Indica variegata has been exhibited bearing a truss of flowers of A. Ind. Gledstanesii“ as true as could possibly be produced, thus evidencing the origin of that fine variety." On another plant of A. Ind. varic- gata a perfect flower of A. Ind. lateritia was produced; so that both Gledstanesii and lateritia no doubt originally appeared as sporting branches of A. Ind. variegata. Cistus tricuspis.-A seedling of this plant, when some years old, 19 15 Journal of Proc. Linn. Soc.,' vol. ii. Botany, p. 131. 16 Gard. Chronicle,' 1847, p. 207. 17 Herbert, Amaryllidaceæ,' 1838, p. 869. 18 Gardener's Chronicle,' 1843, p. 891. 19 Exhibited at Hort. Soc., London. Repoxt in Gardener's Chron.,' 1814, p. 337. 454 CHAP. XI, BUD-VARIATION. produced, at Saharunpore,20 some branches "which bore leaves and flowers widely different from the normal form.” “The abnormal leaf is much less divided, and not acuminated. The petals are con- siderably larger, and quite entire. There is also in the fresh state a conspicuous, large, oblong gland, full of a viscid secretion, on the back of each of the calycine segments.” Althæa rosea.-A double yellow Hollyock suddenly turned one year into a pure white single kind; subsequently a branch bearing the original double yellow flowers reappeared in the midst of the branches of the single white kind. 21 Pelargonium.—These highly cultivated plants seem eminently liable to bud-variation. I will give only a few well-marked cases. Gärtner has seen 22 a plant of P. zonale with a branch having white- edged leaves, which remained constant for years, and bore flowers of a deeper red than usual. Generally speaking, such branches present little or no difference in their flowers: thus a writer 23 pinched off the leading shoot of a seedling P. zonale, and it threw out three branches, which differed in the size and colour of their leaves and stems; but on all three branches “the flowers were identical,” except in being largest in the green-stemmed variety, and smallest in that with variegated foliage: these three varieties were subsequently propagated and distributed. Many branches, and some whole plants, of a variety called compactum, which bears orange-scarlet flowers, have been seen to produce pink flowers. 24 Hill's Hector, which is a pale red variety, produced a branch with lilac flowers, and some trusses with both red and lilac flowers. This apparently is a case of reversion, for Hill's Hector was a seedling from a lilac variety 25 Of all Pelargoniums, Rollisson's Unique seems to be the most sportive; its origin is not positively known, but is believed to be from a cross. Mr. Salter, of Ham- mersmith, states 26 that he has himself known this purple vari- ety to produce the lilac, the rose-crimson or conspicuum, and the red or coccineum varieties; the latter has also produced the rose d'amour, so that altogether four varieties have originated by bud variation from Rollisson's Unique. Mr. Salter remarks that these four varieties "may now be considered as fixed, although they occa- “sionally produce flowers of the original colour. This year coc- 2) Mr. W. Bell, Bot. Soc. of Edinburgh, May, 1863 21 Revue Horticole,' quoted in 'Gard. Chron.,'1845, p. 475. 22 Bastarderzeugung,' 1849, s. 76. 29 Jour. of Horticulture,' 1861, p. 336. 24 W. P. Ayres, in 'Gardener's Chron., 1812, p. 791. 25 W. P. Ayres, idem. 28 Gardener's Chron.,' 1861, p. 968. CHAP. XI. 455 FLOWERS. "cineum has pushed flowers of three different colours, red, rose, and "lilac, upon the same truss, and upon other trusses are flowers half "red and half lilac.” Besides these four varieties, two other scarlet Uniques are known to exist, both of which occasionally produce lilac flowers identical with Rollisson's Unique ; 27 but one at least of these did not arise through bud-variation, but is believed to be a seedling from Rollisson's Unique.28 There are, also, in the trade 29 two other slightly different varieties, of unknown origin, of Rollis- son's Unique: so that altogether we have a curiously complex case of variation both by buds and seeds.30 An English wild plant, the Geranium pratense, when cultivated in a garden, has been seen to produce on the same plant both blue and white, and striped blue and white flowers. 31 Chrysanthemum.- This plant frequently sports, both by its lateral branches and occasionally by suckers. A seedling raised by Mr. Salter has produced by bud-variation six distinct sorts, five different in colour and one in foliage, all of which are now fixed. The varieties which were first introduced from China were so exces- sively variable, "that it was extremely difficult to tell which was the original colour of the variety, and which was the sport.” The same plant would produce one year only buff-coloured, and next year only rose-coloured flowers; and then would change again, or produce at the same time flowers of both colours. These fluctuat- ing varieties are now all lost, and, when a branch sports into a new variety, it can generally be propagated and kept true; but, as Mr. Salter remarks, "every sport should be thoroughly tested in dif- “ferent soils before it can be really considered as fixed, as many “ have been known to run back when planted in rich compost ; but “when sufficient care and time are expended in proving, there will exist little danger of subsequent disappointment.” Mr. Salter in- forms me that with all the varieties the commonest kind of bud- variation is the production of yellow flowers, and, as this is the primordial colour, these cases may be attributed to reversion. Mr. Salter has given me a list of seven differently coloured chrysanthe- mums, which have all produced branches with yellow flowers; but 66 27 Gardener's Chron.,' 1861, p. 945. 28 W. Paul, in 'Gardener's Chron.,' 1861, p. 968. 29 Idem, p. 945. 30 For other cases of bud-variation in this same variety, see Gardener's Chron.,' 1861, pp. 578, 600, 925. For other distinct cases of bud-variation in the genus Pelargonium, see Cottage Gardener,' 1860, p. 194. 31 Rev. W. T. Bree, in Loudon's 'Gard. Mag.,' vol. viii., 1882, p. 93. 32 The Chrysanthemum, its History and Culture,' by J. Salter, 1865, p. 41, &c. 456 CHAP. XI BUD-VARIATION. three of them have also sported into other colours. With any change of colour in the flower, the foliage generally changes in a corresponding manner in lightness or darkness. Another Compositous plant, namely, Centauria cyanus, when cul- tivated in a garden, not unfrequently produces on the same root flowers of four different colours, viz., blue, white, dark-purple, and particoloured.93 The flowers of Anthemis also vary on the same plant.34 Roses.-Many varieties of the rose are known or are believed to have originated by bud-variation.35 The common double moss-rose was imported into England from Italy about the year 1735.36 Its origin is unknown, but from analogy it probably arose from the Provence rose (R. centifolia) by bud-variation ; for branches of the common moss-rose have several times been known to produce Pro- vence roses, wholly or partially destitute of moss: I have seen one such instance, and several others have been recorded.37 Mr. Rivers also informs me that he raised two or three roses of the Provence class from seed of the old single moss-rose ; 38 and this latter kind was produced in 1807 by bud-variation from the common moss-rose. The white moss-rose was also produced in 1788 by an offset from the common red moss-rose: it was at first pale blush-coloured, but became white by continued budding. On cutting down the shoots which had produced this white moss-rose, two weak shoots were thrown up, and buds from these yielded the beautiful striped moss- rose. The common moss-rose has yielded by bud-variation, besides the old single red moss-rose, the old scarlet semi-double moss-rose, and the sage-leaf moss-rose, which “has a delicate shell-like form, and is of a beautiful blush-colour ; it is now (1852) nearly extinct." 39 A white moss-rose has been seen to bear a flower half white and half pink.40 Although several moss-roses have thus certainly arisen by bud-variation, the greater number probably owe their origin to seed of moss-roses. For Mr. Rivers informs me that his seedlings from the old single moss-rose almost always produced moss-roses ; and the old single moss-rose was, as we have seen, the product by bud- 34 Bronn, 33 Bree, in Loudon's Gard. Mag.,' vol. viii., 1832, p. 93. Geschichte der Natur,' B. ii, s. 123. 35 T. Rivers, 'Rose Amateur's Guide,' 1837, p. 4. 36 Mr. Shailer, quoted in Gardener's Chron.,' 1848, p. 759. 37 Transact. Hort. Soc.' vol. iv., 1822, p. 137; Gard. Chron.' 1842, p. 422. 38 See also Loudon's "Arboretum,' vol. ii. p. 780. 39 All these statements on the origin of the several varieties of the moss- rose are given on the authority of Mr. Shailer, who, together with his father, was concerned in their original pro pagation, in 'Gard. Chron.,' 1852, p. 759. 40 Gard. Chron.,' 1845, p. 564. CHAP. XỈ. 457 FLOWERS. variation of the double moss-rose originally imported from Italy. That the original moss-rose was the product of bud-variation is pro- bable, from the facts above given and from the moss-rose de Meaux (also a var. of R. centifolia) 41 having appeared as a sporting branch on the common rose de Meaux. Prof. Caspary has carefully described the case of a six-year-old white moss-rose, which sent up several suckers, one of which was thorny, and produced red flowers, destitute of moss, exactly like those of the Provence rose (R. centifolia): another shoot bore both kinds of flowers and in addition longitudinally striped flowers. As this white moss-rose had been grafted on the Provence rose, Prof. Caspary attributes the above changes to the influence of the stock ; but from the facts already given, and from others to be given, bud- variation, with reversion, is probably a sufficient explanation. Many other instances could be added of roses varying by buds. The white Provence rose apparently thus originated. The double and highly-coloured Belladonna rose has been known 44 to produce by suckers both semi-double and almost single white roses; whilst suckers from one of these semi-double white roses reverted to per- fectly characterised Belladonnas. Varieties of the China rose pro- pagated by cuttings in St. Domingo often revert after a year or two into the old China rose. 15 Many cases have been recorded of roses suddenly becoming striped or changing their character by seg- ments: some plants of the Comtesse de Chabrillant, which is pro- perly rose-coloured, were exhibited in 1862,46 with crimson flakes on a rose ground. I have seen the Beauty of Billiard with a quarter and with half the flower almost white. The Austrian bramble (R. Tutea) not rarely 47 produces branches with pure yellow flowers; and Prof. Henslow has seen exactly half the flower of a pure yellow, and I have seen narrow yellow streaks on a single petal, of which the rest was of the usual copper colour. The following cases are highly remarkable. Mr. Rivers, as I am informed by him, possessed a new French rose with delicate smooth shoots, pale glaucous-green leaves, and semi-double pale flesh-coloured flowers striped with dark red; and on branches thus characterised there suddenly appeared, in more than one instance, the famous old rose called the Baronne Prevost, with its stout thorny shoots, and 41 Transact. Hort. Soc.,' vol, ii. p. 242. 12 Schriften der Phys. Okon. Gesell. zu Königsberg,' Feb. 3, 1865, s. 4. See also Dr. Caspary's paper in Transac- tions of the Hort. Congress of Amster- dam,' 1865. 43 Gard. Chron.,'1852, p. 759. 44 Transact. Hort. Soc.,' vol. ii. p. 242. 45 Sir R. Schomburgk, Proc. Linn. Soc. Bot.,' vol.ii. p. 132. 46 Gard. Chron.,' 1862, p. 619. 47 Hopkirk's 'Flora Anomala,' p. 167. 20 458 CHẤP. XI, BUD-VARIATION. immense, uniformly and richly coloured, double flowers; so that in this case the shoots, leaves, and flowers, all at once changed their character by bud-variation. According to M. Verlot 48 a variety call- ed Rosa Cannabifolia, which has peculiarly shaped leaflets, and dif fers from every member of the family in the leaves being opposite instead of alternate, suddenly appeared on a plant of R. alba in the gardens of the Luxembourg. Lastly, "a running shoot” was ob- served by Mr. H. Curtis 40 on the old Aimée Vibert Noisette, and he budded it on Celine; thus a climbing Aimée Vibert was first pro- duced and afterwards propagated. Dianthus.—It is quite common with the Sweet William (D. bar- batus) to see differently coloured flowers on the same root; and I have observed on the same truss four differently coloured and shaded flowers. Carnations and pinks (D.caryophyllus, &c.) occasionally vary by layers; and some kinds are so little certain in character that they are called by floriculturists "catch-flowers." 50 Mr. Dickson has ably discussed the "running" of particoloured or striped carnations, and says it cannot be accounted for by the compost in which they are grown: "layers from the same clean flower would come part of them “clean and part foul, even when subjected to precisely the same "treatment; and frequently one flower alone appears influenced by "the taint, the remainder coming perfectly clean." 51 This running of the parti-coloured flowers apparently is a case of reversion by buds to the original uniform tint of the species. I will briefly mention some other cases of bud-variation to show how many plants belonging to many orders have varied in their flowers; numerous cases might be added. I have seen on a snap- dragon (Antirrhinum majus) white, pink, and striped flowers on the same plant, and branches with striped flowers on a red-coloured va- riety. On a double stock (Matthiola incana) I have seen a branch bearing single flowers; and on a dingy-purple, double variety of the wall-flower (Cheiranthus cheiri) a branch which had reverted to the ordinary copper colour. On other branches of the same plant, some flowers were exactly divided across the middle, one half being pur- ple and the other coppery; but some of the smaller petals towards the centre of these same flowers were purple longitudinally streaked with coppery colour, or coppery streaked with purple. A Cyclamen 52 has been observed to bear white and pink flowers of two forms, the one resembling the Persicum strain, and the other the Coum strain. 48 Sur la Production et la Fixation des Variétés,' 1865, p. 4. 49 Journal of Horticulture, March, 1865, p. 233. 60 Gard. Chron.,' 1843, p. 135. 51 Ibid., 1842, p. 55. 62 Gard. Chron.,' 1867, p. 235. CHAP. XI. 459 LEAVES AND SHOOTS. Oenothera biennis has been seen 53 bearing flowers of three different colours. The hybrid Gladiolus colvillii occasionally bears uniformly coloured flowers, and one case is recorded 54 of all the flowers on a plant thus changing colour. A Fuchsia has been seen 55 bearing two kinds of flowers. Mirabilis jalapa is eminently sportive, some- times bearing on the same root pure red, yellow, and white flowers, and others striped with various combinations of these three colours. 56 The plants of the Mirabilis which bear such extraordinarily variable flowers, in most, probably in all cases, owe their origin, as shown by Prof. Lecoq, to crosses between differently-coloured varieties. Leaves and Shoots.-Changes, through bud variation, in fruits and flowers have hitherto been treated of, but incidentally some remark- able modifications in the leaves and shoots of the rose and Cistus, and in a lesser degree in the foliage of the Pelargonium and Chry- santhemum, have been noticed. I will now add a few more cases on variation in leaf-buds. Verlot 57 states that on Aralia trifoliata, which properly has leaves with three leaflets, branches bearing sim- ple leaves of various forms frequently appear; these can be propa- gated by buds or grafting, and have given rise, as he states, to se- veral nominal species. With respect to trees, the history of but few of the many varieties with curious or ornamental foliage is known; but several probably have originated by bud-variation. Here is one case ;- An old ash- tree (Fraxinus excelsior) in the grounds of Necton, as Mr. Mason states," for many years has had one bough of a totally different character to the rest of the tree, or of any other ash-tree which I have seen; being short-jointed and densely covered with foliage." It was ascertained that this variety could be propagated by grafts.68 The varieties of some trees with cut leaves, as the oak-leaved labur- num, the parsley-leaved vine, and especially the fern-leaved beech, are apt to revert by buds to the common form.59 The fern-like leaves of the beech sometimes revert only partially, and the branches dis- play here and there sprouts bearing common leaves, fern-like, an variously shaped leaves. Such cases differ but little from the so- called heterophyllous varieties, in which the tree habitually bears Fécondation,' 1862, p. 303. 57 Des Variétés,'1865, p. 5. 63 W. Mason, in 'Gard. Chron.,'1843, 53 Gärtner, 'Bastarderzeugung,' s. 305. 54 Mr. D. Beaton, in Cottage Garden- er,' 1860, p. 250. 55 Gard. Chron.,' 1850, p. 536. 56 Braun, 'Ray Soc. Bot. Mem.,' 1853, p. 315; Hopkirk's 'Flora Anomala,' p. 164; Lecoq, 'Géograph. Bot. de l'Eu- rope,' tom. iii., 1854, p. 405; and 'De la p. 878. 59 Alex. Braun, 'Ray Soc. Bot. Mem.,' 1953, p. 315; Gard. Chron.,' 1841, p. 329. 460 CHAP. XL BUD-VARIATION leaves of various forms; but it is probable that most heterophyllous trees have originated as seedlings. There is a sub-variety of the weeping willow with leaves rolled up into a spiral coil; and Mr. Masters states that a tree of this kind kept true in his garden for twenty-five years, and then threw out a single upright shoot bearing flat leaves.60 I have often noticed single twigs and branches on beech and other trees with their leaves fully expanded before those on the other branches had opened ; and as there was nothing in their ex- posure or character to account for this difference, I presume that they had appeared as bud-variations, like the early and late fruit- maturing varieties of the peach and nectarine. Cryptogamic plants are liable to bud-variation, for fronds on the same fern are often seen to display remarkable deviations of struc- ture. Spores, which are of the nature of buds, taken from such ab- normal fronds, reproduce, with remarkable fidelity, the same variety, after passing through the sexual stage.62 With respect to colour, leaves often become by bud-variation zoned, blotched, or spotted with white, yellow, and red; and this occa- sionally occurs even with plants in a state of nature. Variegation, however, appears still more frequently in plants produced from seed; even the cotyledons or seed-leaves being thus affected.62 There have been endless disputes whether variegation should be consider- ed as a disease. In a future chapter we shall see that it is much in- fluenced, both in the case of seedlings and of mature plants, by the nature of the soil. Plants which have become variegated as seed- lings, generally transmit their character by seed to a large propor- tion of their progeny ; and Mr. Salter has given me a list of eight genera in which this occurred.63 Sir F. Pollock has given me more precise information: he sowed seed from a variegated plant of Bal- lota nigra, which was found growing wild, and thirty per cent. of the seedlings were variegated ; seed from these latter being sown, sixty per cent. came up variegated. When branches become varie- gated by bud-variation, and the variety is attempted to be propa- gated by seed, the seedlings are rarely variegated; Mr. Salter found this to be the case with plants belonging to eleven genera, in which the greater number of the seedlings proved to be green-leaved ; yet a few were slightly variegated, or were quite white, but none were 60 Dr. M. T. Masters, 'Royal Institu- tion Lecture,' March 16, 1860. 61 See Mr. W. K. Bridgman's curious paper in 'Annals and Mag. of Nat. Hist.,' December, 1861; also Mr. J. Scott, Bot. Soc. Edinburgh,' June 12, 1862. 62 Journal of Horticulture,' 1861, p.. 336; Verlot, 'Des Variétés,' p. 76. 63 See also Verlot, Des Variétés,' p. CHAP, XI. 461 BY SUCKERS, TUBERS, AND BULBS. 1964 worth keeping Variegated plants, whether originally produced from seeds or buds, can generally be propagated by budding, graft- ing, &c. ; but all are apt to revert by bud-variation to their ordinary foliage. This tendency, however, differs much in the varieties of even the same species; for instance, the golden-striped variety of Euonymus Japonicus" is very liable to run back to the green-leaved, while the silver-striped variety hardly ever changes. I have seen a variety of the holly, with its leaves having a central yellow patch, which had everywhere partially reverted to the ordinary foliage, so that on the same small branch there were many twigs of both kinds. In the pelargonium, and in some other plants, variegation is general- ly accompanied by some degree of dwarfing, as is well exemplified in the “Dandy" pelargonium. When such dwarf varieties sport back by buds or suckers to the ordinary foliage, the dwarfed sta- ture sometimes still remains. It is remarkable that plants propa- gated from branches which have reverted from variegated to plain leaves 66 do not always (or never, as one observer asserts) perfectly resemble the original plain-leaved plant from which the variegated branch arose : it seems that a plant, in passing by bud-variation from plain leaves to variegated, and back again from variegated to plain, is generally in some degree affected so as to assume a slightly different aspect. Bud-variation by Suckers, Tubers, and Bulbs.-All the cases hither- to given of bud-variation in fruits, flowers, leaves, and shoots, have been confined to buds on the stems or branches, with the exception of a few cases incidentally noticed of varying suckers in the rose, pelargonium, and chrysanthemum. I will now give a few instances of variation in subterranean buds, that is, by suckers, tubers, and bulbs; not that there is any essential difference between buds above and beneath the ground. Mr. Salter informs me that two varie- gated varieties of Phlox originated as suckers; but I should not have thought these worth mentioning, had not Mr. Salter found, after repeated trials, that he could not propagate them by "root- joints," whereas, the variegated Tussilago farfara can thus be safe- ly propagated ; 67 but this latter plant may have originated as a varie- gated seedling, which would account for its greater fixedness of 64 Gard. Chron.,' 1814, p. 86. 65 Ibid., 1861, p. 968. 68 Ibid., 1861, p. 433. Cottage Gar- dener,' 1560, p. 2. 67 M. Lemoine (quoted in Gard. Chron.,'1867, p. 74) has lately observed that the Symphitum with variegated leaves cannot be propagated by division of the roots. He also found that out of 500 plants of a Phlox with striped flow- ers, which had been propagated by root- division, only seven or eight produced striped flowers. See also, on striped Pe- largoniums, 'Gard. Chron.' 1867, p. 1000. 462 CHAP, XI. BUD-VARIATION character. The Barberry (Berberis vulgaris) offers an analogous case; there is a well-known variety with seedless fruit, which can be propagated by cuttings or layers; but suckers always revert to the common form, which produces fruit containing seeds.68 My father repeatedly tried this experiment, and always with the same result. Turning now to tubers: in the common Potato (Solanum tubero- sum) a single bud or eye sometimes varies and produces a new va- riety; or, occasionally, and this is a much more remarkable circum- stance, all the eyes in a tuber vary in the same manner and at the same time, so that the whole tuber assumes a new character. For instance, a single eye in a tuber of the old Forty-fold potato, which is a purple variety, was oberved 9 to become white; this eye was cut out and planted separately, and the kind has since been largely propagated. Kemp's Potato is properly white, but a plant in Lan- cashire produced two tubers which were red, and two which were white; the red kind was propagated in the usual manner by eyes, and kept true to its new colour, and, being found a more productive variety, soon became widely known under the name of Taylor's Forty-fold.' The Old Forty-fold potato, as already stated, is a purple variety; but a plant long cultivated on the same ground produced, not as in the case above given a single white eye, but a whole white tuber, which has since been propagated and keeps true. Several cases have been recorded of large portions of whole rows of potatoes slightly changing their character.72 Dahlias propagated by tubers under the hot climate of St. Do- mingo vary much; Sir R. Schomburgk gives the case of the “But- terfly variety," which the second year produced on the same plant “double and single flowers; here white petals edged with maroon; “there of a uniform deep maroon. Mr. Bree also mentions a plant “which bore two different kinds of self-coloured flowers, as “well as a third kind which partook of both colours beautifully in- "termixed.” 74 Another case is described of a dahlia with purple flowers which bore a white flower streaked with purple." Considering how long and extensively many Bulbous plants have been cultivated, and how numerous are the varieties produced from seed, these plants have not varied so much by offsets,—that is, by the production of new bulbs,--as might have been expected. With 73 75 68 Anderson's 'Recreations in Agricul- ture,' vol. v. p. 152. 69 Gard. Chron.,' 1857, p. 662. 70 Ibid., 1841, p. 814. 71 Ibid., 1857, p. 613. 72 Ibid., 1857, p. 679. See also Phil- lips, 'Hist. of Vegetables,' vol. ii. p. 91, for other and similar accounts. 73 Journal of Proc. Linn. Soc.,' vol. ii. Botany, p. 132. 74 Loudon's Gard. Mag.,' vol. viii., 1832, p. 94. 75 Gard. Chron.,' 1950, p. 536; and 1842, p. 729. CHAP. XI. BY SUCKERS, TUBERS, AND BULBS. 463 the Hyacinth a case has been recorded of a blue variety which for three successive years gave offsets which produced white flowers with a red centre.76 Another hyacinth has been described" as bearing on the same truss a perfectly pink and a perfectly blue flower. Mr. John Scott informs me that in 1862 Imatophyllum miniatum, in the Botanic Gardens of Edinburgh, threw up a sucker which dif- fered from the normal form, in the leaves being two-ranked instead of four-ranked. The leaves were also smaller, with the upper sur- face raised instead of being channelled. In the propagation of Tulips, seedlings are raised, called selfs or breeders, which consist of one plain colour on a white or yellow “bottom. These, being cultivated on a dry and rather poor soil, " become broken or variegated and produce new varieties. The " time that elapses before they break varies from one to twenty "years or more, and sometimes this change never takes place.” 78 The various broken or variegated colours which give value to all tulips are due to bud-variation; for although the Bybloemens and some other kinds have been raised from several distinct breeders, yet all the Baguets are said to have come from a single breeder or seed- ling. This bud-variation, in accordance with the views of MM. Vil- morin and Verlot,79 is probably an attempt to revert to that uni- form colour which is natural to the species. A tulip, however, which has already become broken, when treated with too strong manure, is liable to flush or lose by a second act of reversion its variegated colours. Some kinds, as Imperatrix Florum, are much more liable than others to flushing; and Mr. Dickson maintains 50 that this can no more be accounted for than the variation of any other plant. He believes that English growers, from care in choos- ing seed from broken flowers instead of from plain flowers, have to a certain extent diminished the tendency in flowers already broken to flushing or secondary reversion. During two consecutive years all the early flowers in a bed of Tigridia conchiflora el resembled those of the old T. pavonia ; but the later flowers assumed their proper colour of fine yellow spotted with crimson. An apparently authentic account has been published 62 of two forms of Hemerocallis, which have been universally con- p. 63. 80 Gard. Chron.,'1811, p. 752; 1842, 76 Des Jacinthes,' &c., Amsterdam, 1768, p. 122. 77 Gard. Chron.,' 1945, p. 212. 78 Loudon's Encyclop. of Gardening, p. 55. p. 1024. 81 Gard. Chron., '1849, p. 565. 82 Transact. Linn. Soc.,' vol. ii. p. 354. 79 Production des Variétés,' 1865, 464 CHAP. X1. BUD-VARIATION. sidered as distinct species, changing into each other; for the roots of the large-flowered tawny H. fulva, being divided and planted in a different soil and place, produced the small-flowered yellow H. flava, as well as some intermediate forms. It is doubtful whether such cases as these latter, as well as the "flushing” of broken tulips and the “running” of particoloured carnations,—that is, their more or less complete return to a uniform tint, ought to be classed under bud-variation, or ought to be retained for the chapter in which I treat of the direct action of the conditions of life on organic beings. These cases, however, have this much in common with bud-varia- tion, that the change is effected through buds and not through seminal reproduction. But, on the other hand, there is this differ- ence—that in ordinary cases of bud-variation, one bud alone changes, whilst in the foregoing cases all the buds on the same plant were modified together; yet we have an intermediate case, for with the potato all the eyes in one tuber alone simultaneously changed their character. I will conclude with a few allied cases, which may be ranked either under bud-variation, or under the direct action of the condi- tions of life. When the common Hepatica is transplanted from its native woods, the flowers change colour, even during the first year.83 It is notorious that the improved varieties of the Heartsease (Viola tricolor) when transplanted often produce flowers widely different in size, form, and colour: for instance, I transplanted a large uniformly- coloured dark purple variety, whilst in full flower, and it then pro- duced much smaller, more elongated flowers, with the lower petals yellow; these were succeeded by flowers marked with large purple spots, and ultimately, towards the end of the same summer, by the original large dark purple flowers. The slight changes which some fruit-trees undergo from being grafted and regrafted on various stocks,84 were considered by Andrew Knight 85 as closely allied to “sporting branches," or bud-variations. Again, we have the case of young fruit-trees changing their character as they grow old ; seed- ling pears, for instance, lose with age their spines and improve in the flavour of their fruit. Weeping birch-trees, when grafted on the common variety, do not acquire a perfect pendulous habit until they 83 Godron, De l'Espèce,' tom. ii. p. 84. 84 M. Carrière has lately described, in the 'Révue Horticole' (Dec. 1, 1866, p. 457), an extraordinary case. He twice inserted grafts of the Aria vestita on thorn-trees (épines) growing in pots; and the grafts, as they grew, produced shoots with bark, buds, leaves, petioles, petals, and flower-stalks all widely dif- ferent from those of the Aria. The grafted shoots were also much hardier, and flowered earlier, than those on the ungrafted Aria. 85 Transact. Hort. Soc.,' vol. ii. p. 160. CHAP. XI. 465 ANOMALOUS REPRODUCTION, ETC. grow old : on the other hand, I shall hereafter give the case of some weeping ashes which slowly and gradually assumed an upright habit of growth. All such changes, dependent on age, may be compared with the changes, alluded to in the last chapter, which many trees naturally undergo; as in the case of the Deodar and Cedar of Lebanon, which are unlike in youth and closely resemble each other in old age; and as with certain oaks, and with some varieties of the lime and hawthorn.86 Before giving a summary on Bud-variation I will dis- cuss some singular and anomalous cases, which are more or less closely related to this same subject. I will begin with the famous case of Adam's laburnum or Cytisus Adami, a form or hybrid intermediate between two very distinct species, namely, C. laburnum and purpureus, the common and purple laburnum; but as this tree has often been described, I will be as brief as I can. Throughout Europe, in different soils and under different climates, branches on this tree have repeatedly and suddenly reverted to both parent-species in their flowers and leaves. To behold mingled on the same tree tufts of dingy-red, bright yellow, and purple flowers, borne on branches having widely different leaves and manner of growth, is a surprising sight. The same raceme sometimes bears two kinds of flowers; and I have seen a single flower exactly di- vided into halves, one side being bright yellow and the other pur- ple; so that one half of the standard-petal was yellow and of larger size, and the other half purple and smaller. In another flower the whole corolla was bright yellow, but exactly half the calyx was purple. In another, one of the dingy-red wing-petals had a bright yellow narrow stripe on it, and lastly, in another flower, one of the stamens, which had become slightly foliaceous, was half yellow and half purple; so that the tendency to segregation of character or reversion affects even single parts and organs.87 The most re- markable fact about this tree is that in its intermediate state, even when growing near both parent-species, it is quite sterile; but when the flowers become pure yellow or pure purple they yield seed. I believe that the pods from the yellow flowers yield a full comple- 88 For the cases of oaks see Alph. De Candolle in Bibl. Univers.,' Geneva, Nov. 1862; for limes, &c., Loudon's "Gard, Mag.,' vol. xi, 1835, p. 503, 87 For analogous facts, see Braun, "Rejuvenescence,' in "Ray Soc. Bot. Mem.,' 1853, p. 320; and 'Gard. Chron.,' 1842, p. 397. 20* 466 CEAP. XI. ANOMALOUS MODES ment of seed; they certainly yield a large number. Two seedlings raised by Mr. Herbert from such seed exhibited a purple tinge on. the stalks of their flowers; but several seedlings raised by myself resembled in every character the common laburnum, with the ex- ception that some of them had remarkably long racemes: these seedlings were perfectly fertile. That such purity of character and fertility should be suddenly reacquired from so hybridized and ste- rile a form is an astonishing phenomenon. The branches with pur- ple flowers appear at first sight exactly to resemble those of 0. purpureus; but on careful comparison I found that they differed from the pure species in the shoots being thicker, the leaves a little broader, and the flowers slightly shorter, with the corolla and calyx less brightly purple: the basal part of the standard-petal also plain- ly showed a trace of the yellow stain. So that the flowers, at least in this instance, had not perfectly recovered their true character; and in accordance with this, they were not perfectly fertile, for many of the pods contained no seed, some produced one, and very few contained as many as two seeds; whilst numerous pods on a tree of the pure C. purpureus in my garden contained three, four, and five fine seeds. The pollen, moreover, was very imperfect, a multitude of grains being small and shrivelled ; and this is a singu- lar fact; for, as we shall immediately see, the pollen-grains in the dingy-red and sterile flowers on the parent-tree, were, in external appearance, in a much better state, and included very few shrivelled grain. Although the pollen of the reverted purple flowers was in so poor a condition, the ovules were well-formed, and, when ma- ture, germinated freely with me. Mr. Herbert also raised plants from seeds of the reverted purple flowers, and they differed very little from the usual state of C. purpureus ; but this expression shows that they had not perfectly recovered their proper character. Prof. Caspary has examined the ovules of the dingy-red and sterile flowers in several plants of C. adami on the Continent,' and finds them generally monstrous. In three plants examined by me in England, the ovules were likewise monstrous, the nucleus vary- ing auch in shape, and projecting irregularly beyond the proper coats. The pollen-grains, on the other hand, judging from their external appearance, were remarkably good, and readily protruded their tubes. By repeatedly counting, under the microscope, the proportional number of bad grains, Prof. Caspary ascertained that only 2-5 per cent. were bad, which is a less proportion than in the 88 Journal of Hort. Soc.,' vol. ii., 1947, p. 100. 89 See Transact. of Ilort. Congress of Amsterdam,' 1865; but I owe most of the following information to Prof. Cas- pary's letters. CHAP. XI. OF REPRODUCTION AND VARIATION, 467 pollen of three pure species of Cytisus in their cultivated state, viz. .C. purpureus, laburnum, and alpinus. Although the pollen of C. adami is thus in appearance good, it does not follow, according to M. Naudin's observations " on Mirabilis, that it would be func- tionally effective. The fact of the ovules of C. adami being mon- strous, and the pollen apparently sound, is all the more remarka- ble, because it is opposed to what usually occurs not only with most hybrids, 91 but with two hybrids in the same genus, namely in C. purpureo-elongatus, and C. alpino-laburnum. In both these by- brids, the ovules, as observed by Prof. Caspary and myself, were well-formed, whilst many of the pollen-grains were ill-formed ; in the latter hybrid 20-3 per cent., and in the former no less than 84:8 per cent. of the grains were ascertained by Prof. Caspary to be bad. This unusual condition of the male and female reproductive ele- ments in C. adami has been used by Prof. Caspary as an argument against this plant being considered as an ordinary hybrid produced from seed; but we should remember that with hybrids the ovules have not been examined nearly so frequently as the pollen, and they may be much oftener imperfect than is generally supposed. Dr. E. Bornet, of Antibes, informs me (through Mr. J. Traherne Mog- gridge) that with hybrid Cisti the ovarium is frequently deformed, the ovules being in some cases quite absent, and in other cases in capable of fertilisation. Several theories have been propounded to account for the origin of C. adami, and for the transformations which it undergoes. These transformations have been attributed by some authors to simple bud- variation ; but considering the wide difference between C. laburnum and purpureus, both of which are natural species, and considering the sterility of the intermediate form, this view may be summarily rejected. We shall presently see that, with hybrid plants, two different embryos may be developed within the same seed and co- here, and it has been supposed that C. adami might have thus originated. It is known that when a plant with variegated leaves is budded on a plain stock, the latter is sometimes affected, and it is believed by some that the laburnum has been thus affected. Thus Mr. Purser states 92 that a common laburnum-tree in his garden, into which three grafts of the Cytisus purpureus had been inserted, gradually assumed the character of C. adami; but more evidence 90 Nouvelles Archives du Muséum,' tom. i. p. 143. 91 See on this head, Naudin, idem, p. 141 92 The statement is believed by Dr. Lindley in 'Gard. Chron.,' 1857, pp. 332, 400. 468 CRAP. XI. ANOMALOUS MODES and copious details would be requisite to make so extraordinary a statement credible. Many authors maintain that C. adami is a hybrid produced in the common way by seed, and that it has reverted by buds to its two parent-forms. Negative results are of little value ; but Reis- seck, Caspary, and I myself, tried in vain to cross C. laburnum and purpureus; when I fertilised the former with pollen of the latter, I had the nearest approach to success, for pods were formed, but in sixteen days after the withering of the flowers they fell off. Never- theless, the belief that C. adami is a spontaneously produced hybrid between these two species is strongly supported by the fact that hy- brids between these species and two others have spontaneously arisen. In a bed of seedlings from C. elongatus, which grew near to C. pur- pureus, and was probably fertilised by it, through the agency of in- sects (for these, as I know by experiment, play an important part in the fertilisation of the laburnum), the sterile hybrid C. purpureo- elongatus appeared.93 Thus, also, Waterer's laburnum, the C. alpino- laburnum, 94 spontaneously appeared, as I am informed by Mr. Water- er, in a bed of seedlings. On the other hand, we have a clear and distinct account given by M. Adam, who raised the plant, to Poiteau," showing that C. adami is not an ordinary hybrid. M. Adam inserted in the usual manner a shield of the bark of C. purpureus into a stock of C. laburnum; and the bud lay dormant, as often happens, for a year; the shield then produced many buds and shoots, one of which grew more upright and vigorous with larger leaves than the shoots of C. purpureus, and was consequently propagated. Now it deserves especial notice that these plants were sold by M. Adam, as a variety of C. purpureus, before they had flowered ; and the account was published by Poi- teau after the plants had flowered, but before they had exhibited their remarkable tendency to revert into the two parent-species. 08 Braun, in . Bot. Mem. Ray Soc.,' 1953, p. xxiii. 94 This hybrid has never been de- scribed. It is exactly intermediate in foliage, time of flowering, dark striæ at the base of the standard petal, hairiness of the ovarium, and in almost every other character, between C. laburnum and alpinus; but it approaches the former species more nearly in colour, and exceeds it in the length of the racemes. We have before seen that 20:3 per cent. of its pollen-grains are ill-form- ed and worthless. My plant, though growing not above thirty or forty yards from both parent-species, during some seasons yielded no good seeds; but in 1866 it was unusually fertile, and its long racemes produced from one to occa- sionally even four pods. Many of the pods contained no good seeds, but gene- rally they contained a single apparently good seed, sometimes two, and in one case three seeds. Some of the seeds ger- minated. 95 Annales de la Soc. de Hort. de Paris,' tom. vii., 1830, p. 93. CHAP. XI. OF REPRODUCTION AND VARIATION. 469 So that there was no conceivable motive for falsification, and it is difficult to see how there could have been any error. If we admit as true M. Adam's account, we must admit the extraordinary fact that two distinct species can unite by their cellular tissue, and sub- sequently produce a plant bearing leaves and sterile flowers inter- mediate in character between the scion and stock, and producing buds liable to reversion; in short, resembling in every important respect a hybrid formed in the ordinary way by seminal reproduc- tion. Such plants, if really thus formed, might be called graft-hy- brids. I will now give all the facts which I have been able to collect illustrative of the above theories, not for the sake of merely throw- ing light on the origin of C. adami, but to show in how many extra- ordinary and complex methods one kind of plant may affect another, generally in connection with bud-variation. The supposition that either C. laburnum or purpureus produced by ordinary bud-variation the intermediate and the other form, may, as already remarked, be absolutely excluded, from the want of any evidence, from the great amount of change thus implied, and from the sterility of the inter- mediate form. Nevertheless such cases as nectarines suddenly ap- pearing on peach-trees, occasionally with the fruit half-and-half in nature,-moss-roses appearing on other roses, with the flowers divid- ed into halves, or striped with different colours --and other such cases, are closely analogous in the result produced, though not in origin, with the case of O. adami. A distinguished botanist, Mr. G. H. Thwaites 96 has recorded a re- markable case of a seed from Fuchsia coccinea fertilised by F. ful- gens, which contained two embryos, and was “a true vegetable twin.” The two plants produced from the two embryos were tremely different in appearance and character," though both resem- bled other hybrids of the same parentage produced at the same time. These twin plants “ were closely coherent, below the two pairs of “cotyledon-leaves, into a single cylindrical stem, so that they had “subsequently the appearance of being branches on one trunk.” Had the two united stems grown up to their full height, instead of dying, a curiously mixed hybrid would have been produced ; but even if some of the buds had subsequently reverted to both parent- forms, the case, although more complex, would not have been strict- ly analogous with that of C. adami. On the other hand, a mongrel melon described by Sageret ºr perhaps did thus originate ; for the ex- 96 Annals and Mag. of Nat. Hist.,' March, 1848. 97 Pomologie Physiolog.,' 1830, p. 126. 470 CHAP. XI. ANOMALOUS MODES two main branches, which arose from two cotyledon-buds, produced very different fruit,-on the one branch like that of the pater- nal variety, and on the other branch to a certain extent like that of the maternal variety, the melon of China. The famous bizzarria Orange offers a strictly parallel case to that of Cytisus adami. The gardener who in 1644 in Florence raised this tree, declared that it was a seedling which had been grafted ; and after the graft had perished, the stock sprouted and produced the bizzarria. Gallesio, who carefully examined several living specimens and compared them with the description given by the original de- scriber P. Nato, 98 states that the tree produces at the same time leaves, flowers, and fruit, identical with the bitter orange and with the citron of Florence, and likewise compound fruit with the two kinds either blended together, both externally and internally, or segregated in various ways. This tree can be propagated by cut- tings, and retains its diversified character. The so-called trifacial orange of Alexandria and Smyrna º' resembles in its general nature the bizzarria, but differs from it in the sweet orange and citron being blended together in the same fruit, and separately produced on the same tree: nothing is known of its origin. In regard to the bizzar- ria, many authors believe that it is a graft-hybrid ; Gallesio on the other hand thinks that it is an ordinary hybrid, with the habit of partially reverting by buds to the two parent-forms; and we have seen in the last chapter that the species in this genus often cross spontaneously. Here is another analogous, but doubtful case. A writer in the * Gardener's Chronicle 100 states that an Æsculus rubicunda in his garden yearly produced on one of its branches "spikes of pale yellow flowers, smaller in size and somewhat similar in colour to those of Æ. flava." If as the editor believes Æsculus rubicunda is a hybrid descended on one side from Æ. flava, we have a case of partial re- version to one of the parent-forms. If, as some botanists maintain, Æ. rubicunda is not a hybrid, but a natural species, the case is one of simple bud-variation. The following facts show that hybrids produced from seed in the ordinary way, certainly sometimes revert by buds to their parent- forms. Hybrids between Tropæolum minus and majus 101 at first 98 Gallesio, Gli Agrumi dei Giard. Bot. Agrar, di Firenze,' 1839, p. 11. In his Traité du Citrus,' 1811, p. 146, he speaks as if the compound fruit con- sisted in part of lemons, but this appa- rently was a mistake. 99 Gard. Chron.,' 1855, p. 628. See also Prof. Caspary, in Transact. Hort. Congress of Amsterdam,' 1865. 100 Gard. Chron.,' 1851, p. 406. 101 Gärtner, Bastarderzeugung,' s. 549. It is, however, doubtful whether these plants should be ranked as species or varieties. CHAP. XI. 471 OF REPRODUCTION AND VARIATION. produced flowers intermediate in size, colour, and structure between their two parents; but later in the season some of these plants pro- duced flowers in all respects like those of the mother-form, mingled with flowers still retaining the usual intermediate condition. А hybrid Cereus between C. speciosissimus and phyllanthus, 102 plants which are widely different in appearance, produced for the first three years angular, five-sided stems, and then some flat stems like those of C. phyllanthus. Kölreuter also gives cases of hybrid Lobelias and Verbascums, which at first produced flowers of one colour, and later in the season flowers of a different colour.103 Naudin 104 raised forty hybrids from Datura lævis fertilised by D. stramonium ; and three of these hybrids produced many capsules, of which a half, or quarter, or lesser segment was smooth and of small size like the capsule of the pure D. lævis, the remaining part being spinose and of larger size like the capsule of the pure D. stramonium : from one of these composite capsules, plants were raised which perfectly resembled both parent- forms. Turning now to varieties. A seedling apple, conjectured to be of crossed parentage, has been described in France, 105 which bears fruit, with one half larger than the other, of a red colour, acid taste, and peculiar odour; the other side being greenish-yellow and very sweet: it is said scarcely ever to include perfectly developed seed. I suppose that this is not the same tree with that which Gaudi- chaud 106 exhibited before the French Institute, bearing on the same branch two distinct kinds of apples, one a reinette rouge, and the other like a reinette canada jaunâtre : this double-bearing variety can be propagated by grafts, and continues to produce both kinds; its origin is unknown. The Rev. J. D. La Touche sent me a coloured drawing of an apple which he brought from Canada, of which half, surrounding and including the whole of the calyx and the insertion of the footstalk, is green, the other half being brown and of the na- ture of the pomme gris apple, with the line of separation between the two halves exactly defined. The tree was a grafted one, and Mr. La Touche thinks that the branch which bore this curious apple sprung from the point of junction of the graft and stock: had this fact been ascertained, the case would probably have come into the small class of graft-hybrids presently to be given. But the branch may have sprung from the stock, which no doubt was a seedling. 102 Gärtner, 'Bastarderz.,', s. 550. 105 L'Hermès, Jan. 14, 1837, quoted 103 Journal de Physique,' tom. xxiii., in Loudon's Gard. Mag.,' vol. xiii. p. 1783, p. 100. Act. Acad. St. Peters- 230. burgh,' 1781, part. i. p. 249. 106 Comptes Rendus,' tom. xxxiv., 104 Nouvelles Archives du Muséum, 1852, p. 746. tom. i. p. 49. 472 CHAP. XI. ANOMALOUS MODES Prof. H. Lecoq, who has made a great number of crosses between the differently coloured varieties of Mirabilis japala,107 finds that in the seedlings the colours rarely combine, but form distinct stripes; or half the flower is of one colour and half of a different colour. Some varieties regularly bear flowers striped with yellow, white, and red; but plants of such varieties occasionally produce on the same root branches with uniformly coloured flowers of all three tints, and other branches with half-and-half coloured flowers and others with marbled flowers. "Gallesio 108 crossed reciprocally white and red car- nations, and the seedlings were striped ; but some of the striped plants also bore entirely white and entirely red flowers. Some of these plants produced one year red flowers alone, and in the follow- ing year striped flowers; or conversely, some plants, after having borne for two or three years striped flowers, would revert and bear exclusively red flowers. It may be worth mentioning that I fertil- ised the Purple Sweet-pea (Lathyrus odoratus) with pollen from the light-coloured Painted Lady: seedlings raised from one and the same pod were not intermediate in character, but perfectly resem- bled both parents. Later in the summer, the plants which had at first borne flowers identical with those of the Painted Lady, pro- duced flowers streaked and blotched with purple; showing in these darker marks a tendency to reversion to the mother-variety. Andrew Knight 109 fertilised two white grapes with pollen of the Aleppo grape, which is darkly variegated both in its leaves and fruit. The result was that the young seedlings were not at first variegated, but all became variegated during the succeeding summer; besides this, many produced on the same plant bunches of grapes which were all black, or all white, or lead-coloured striped with white, or white dotted with minute black stripes; and grapes of all these shades could frequently be found on the same footstalk. In most of these cases of crossed varieties, and in some of the cases of crossed species, the colours proper to both parents appeared in the seedlings, as soon as they first flowered, in the form of stripes or larger segments, or as whole flowers or fruit of two kinds borne on the same plant; and in this case the appearance of the two colours cannot strictly be said to be due to reversion, but to some incapacity of fusion, leading to their segregation. When, 107 Géograph. Bot. de l'Europe,' tom. iii. 1854, p. 405; and 'De la Fécon- dation,' 1862, p. 302. 108 Traité du Citrus,' 1811, p. 45. 109 Transact. Linn. Soc.,' vol. ix. p. 268. CHAP. XI. 473 OF REPRODUCTION AND VARIATION. however, the later flowers or fruit, produced during the same season or during a succeeding year or generation, become striped or half-in-half, &c., the segregation of the two colours is strictly a case of reversion by bud-varia- tion. In a future chapter I shall show that, with animals of crossed parentage, the same individual has been known to change its character during growth, and to revert to one of its parents which it did not at first resemble. From the various facts now given there can be no doubt that the same individual plant, whether a hybrid or a mongrel, sometimes returns in its leaves, flowers, and fruit, either wholly or by segments, to both parent-forms in the same manner as the Cytisus adami, and the .Biz- zarria Orange. We will now consider the few facts which have been recorded in support of the belief that a variety when grafted or budded on another variety sometimes affects the whole stock, or at the point of junction gives rise to. a bud, or graft-hybrid, which partakes of the characters of both stock and scion. 110 It is notorious that when the variegated Jessamine is budded on the common kind, the stock sometimes produces buds bearing vari- egated leaves: Mr. Rivers, as he informs me, has seen instances of this. The same thing occurs with the Oleander. 11 Mr. Rivers, on the authority of a trustworthy friend, states that some buds of a golden-variegated ash, which were inserted into common ashes, all died except one, but the ash-stocks were affected, 111 and produced, both above and below the points of insertion of the plates of bark bearing the dead buds, shoots which bore variegated leaves. Mr. J. Anderson Henry has communicated to me a nearly similar case: Mr. Brown, of Perth, observed many years ago, in a Highland glen, an ash-tree with yellow leaves; and buds taken from this tree were inserted into common ashes, which in consequence were affected, and produced the Blotched Breadalbane Ash. This variety has been 110 Gärtner ("Bastarderzeugung,' s. 611) gives many references on this sub- ject. 111 A nearly similar account was given by Bradley, in 1724, in his 'Treatise on Husbandry,' vol. i. p. 199. 474 CHAP, XI. ANOMALOUS MODES propagated, and has preserved its character during the last fifty years. Weeping ashes, also, were budded on the affected stocks, and became similarly variegated. Many authors consider variega- tion as the result of disease; and on this view, which however is doubtful, for some variegated plants are perfectly healthy and vi- gorous, the foregoing cases may be looked at as the direct result of the inoculation of a disease. Variegation is much influenced, as we shall hereafter see, by the nature of the soil in which the plants are grown; and it does not seem improbable that whatever change in the sap or tissues certain soils induce, whether or not called a dis- ease, might spread from the inserted piece of bark to the stock. But a change of this kind cannot be considered to be of the nature of a graft-hybrid. There is a variety of the hazel with dark-purple leaves, like those of the copper-beech: no one has attributed this colour to disease, and it apparently is only an exaggeration of a tint which may often be seen on the leaves of the common hazel. When this variety is grafted on the common hazel,112 it sometimes colours, as has been asserted, the leaves below the graft; but I should add that Mr. Rivers, who has possessed hundreds of such grafted trees, has never seen an instance. Gärtner 113 quotes two separate accounts of branches of dark and white-fruited vines which had been united in various ways, such as being split longitudinally, and then joined, &c.; and these branches produced distinct bunches of grapes of the two colours, and other bunches with grapes either striped or of an intermediate and new tint. Even the leaves in one case were variegated. These facts are the more remarkable because Andrew Knight never succeeded in raising variegated grapes by fertilising white kinds by pollen of dark kinds; though, as we have seen, he obtained seedlings with variegated fruit and leaves, by fertilising a white variety by the variegated dark Aleppo grape. Gärtner attributes the above-quoted cases merely to bud-variation ; but it is a strange coincidence that the branches which had been grafted in a peculiar manner should alone have thus varied; and H. Adorne de Tscharner positively as- serts that he produced the described result more than once, and could do so at will, by splitting and uniting the branches in the manner described by him. I should not have quoted the following case had not the author of Des Jacinthes' 114 impressed me with the belief not only of his extensive knowledge, but of his truthfulness: he says that bulbs 112 Loudon's Arboretum,' vol. iv. P. 2595. 113 Bastarderzeugung,' s. 619. 114 Amsterdam, 1768, p. 124. Cuap. XI. OF REPRODUCTION AND VARIATION. 475 of blue and red hyacinths may be cut in two, and that they will grow together and throw up a united stem (and this I have myself seen), with flowers of the two colours on the opposite sides. But the remarkable point is, that flowers are sometimes produced with the two colours blended together, which makes the case closely analo- gous with that of the blended colours of the grapes on the united vine-branches. Mr. R. Trail stated in 1867, before the Botanical Society of Edin- burgh (and has since given me fuller information), that several years ago he cut about sixty blue and white potatoes into halves through the eyes or buds, and then carefully joined them, destroying at the same time the other eyes. Some of these united tubers produced white, and others blue tubers, and it is probable that in these cases the one half alone of the bud grew. Some, however, produced tubers partly white and partly blue; and the tubers from about four or five were regularly mottled with the two colours. In these latter cases we may conclude that a stem had been formed by the union of the bisected buds; and as tubers are produced by the enlarge- ment of subterranean branches arising from the main stem, their mottled colour apparently affords clear evidence of the intimate com- mingling of the two varieties. I have repeated these experiments on the potato and on the hyacinth on a large scale, but with no success. The most reliable instance known to me of the formation of a graft-hybrid is one, recorded by Mr. Poynter, 115 who assures me, in a letter, of the entire accuracy of the statement. Rosa Devoniensis had been budded some years previously on a white Banksian rose; and from the much enlarged point of junction, whence the Devoni- ensis and Banksian still continued to grow, a third branch issued, which was neither pure Banksian nor pure Devoniensis, but partook of the character of both; the flowers resembled, but were superior in character to those of the variety called Lamarque (one of the Noisettes), while the shoots were similar in their manner of growth to those of the Banksian rose, with the exception that the longer and more robust shoots were furnished with prickles. This rose was exhibited before the Floral Committee of the Horticultural Society of London. Dr. Lindley examined it, and concluded that it had cer- tainly been produced by the mingling of R. Banksic with some rose like R. Devoniensis, " for while it was very greatly increased in vigour and in the size of all the parts, the leaves were half-way between a Banksian and Tea-scented rose." It appears that rose- 115 Gard. Chron.,' 1960, p. 672, with a woodcut. 476 CHAP. XI. DIRECT ACTION OF THE MALE growers were aware that the Banksian rose sometimes affects other roses. Had it not been for this latter statement, it might have been suspected that this new variety was simply due to bud-variation, and that it had occurred by a mere accident at the point of junction be- tween the two old kinds. To sum up the foregoing facts: the statement that Cytisus adami originated as a graft-hybrid is so precise that it can hardly be rejected, and, as we have just seen, some analogous facts render the statement to a certain extent probable. The peculiar, monstrous condition of the ovules, and the apparently sound condition of the pol- len, favour the belief that it is not an ordinary or seminal hybrid. On the other hand, the fact that the same two species, viz. C. laburnum and purpureus, have spontane- ously produced hybrids by seed, is a strong argument in support of the belief that C. adami originated in a simi- lar manner. With respect to the extraordinary tendency which this tree exhibits to complete or partial reversion, we have seen that undoubted seminal hybrids and mon- grels are similarly liable. On the whole, I am inclined to put trust in M. Adam's statement; and if it should ever be proved true, the same view would probably have to be extended to the Bizzarria and Trifacial oranges and to the apples above described ; but more evidence is requisite before the possibility of the production of graft- hybrids can be fully admitted. Although it is at present impossible to arrive at any certain conclusion with respect to the origin of these remarkable trees, the various facts above given appear to me to deserve attention under seve- ral points of view, more especially as showing that the power of reversion is inherent in Buds. On the direct or immediate action of the Male Element on the Mother Form.- Another remarkable class of facts must be here considered, because they have been sup- posed to account for some cases of bud-variation: I refer to the direct action of the male element, not in the ordi- CHAP XI, ELEMENT ON THE MOTHER FORM. 477 nary way on the ovules, but on certain parts of the female plant, or in the case of animals on the subsequent progeny of the female by a second male. I may premise that with plants the ovarium and the coats of the ovules are obviously parts of the female, and it could not have been anticipated that they would be affected by the pollen of a foreign variety or species, although the develop- ment of the embryo, within the embryonic sack, within the ovule, within the ovarium, of course depends on the male element. Even as long ago as 1729 it was observed 116 that white and blue varieties of the Pea, when planted near each other, mutually cross- ed, no doubt through the agency of bees, and in the autumn blue and white peas were found within the same pods. Wiegmann made an exactly similar observation in the present century. The same result has followed several times when a variety with peas of one colour has been artificially crossed by a differently-coloured variety. 117 These statements led Gärtner, who was highly sceptical on the subject, carefully to try a long series of experiments: he se- lected the most constant varieties, and the result conclusively showed that the colour of the skin of the pea is modified when pollen of a differently coloured variety is used. This conclusion has since been confirmed by experiments made by the Rev. J. M. Berkeley. 118 Mr. Laxton of Stamford, whilst making experiments on peas for the express purpose of ascertaining the influence of foreign pollen on the mother-plant, has recently 119 observed an important additional fact. He fertilised the Tall Sugar pea, which bears very thin green pods, becoming brownish-white when dry, with pollen of the Purple. podded pea, which, as its name expresses, has dark-purple pods with very thick skin, becoming pale reddish-purple when dry. Mr. Lax- ton has cultivated the tall sugar-pea during twenty years, and has never seen or heard of it producing a purple pod ; nevertheless, a flower fertilised by pollen from the purple-pod yielded a pod clouded with purplish-red, which Mr. Laxton kindly gave to me. of about two inches in length towards the extremity of the pod, and a smaller space near the stalk, were thus coloured. On comparing A space 116 Philosophical Transact.,' vol. xliii., 1744-45, p. 525. 117 Mr. Swayne, in 'Transact. Hort. Soc.,' vol. v. p. 234; and Gärtner, 'Bas- tarderzeugung,' 1849, s. 51 and 499. 118 Gard. Chron.,' 1851, p. 404. 119 Ibid., 1866, p. 900. 478 CHAP. XI. DIRECT ACTION OF THE MALE the colour with that of the purple-pod, both pods having been first dried and then soaked in water, it was found to be identically the same; and in both the colour was confined to the cells lying imme- diately beneath the outer skin of the pod. The valves of the crossed pod were also decidedly thicker and stronger than those of the pods of the mother-plant, but this may have been an accidental circum- stance, for I know not how far their thickness in the Tall Sugar-pea is a variable character. The peas of the Tall Sugar-pea, when dry, are pale greenish-brown, thickly covered with dots of dark purple so minute as to be visible only through a lens, and Mr. Laxton has never seen or heard of this variety producing a purple pea ; but in the crossed pod one of the peas was of a uniform beautiful violet-purple tint, and a second was irregularly clouded with pale purple. The colour lies in the outer of the two coats which surround the pea. As the peas of the purple- podded variety when dry are of a pale greenish-buff, it would at first appear that this remarkable change of colour in the peas in the crossed pod could not have been caused by the direct action of the pollen of the purple-pod : but when we bear in mind that this latter variety has purple flowers, purple marks on its stipules, and purple pods; and that the Tall sugar-pea likewise has purple flowers and sti- pules, and microscopically minute purple dots on the peas, we can hardly doubt that the tendency to the production of purple in both parents has in combination modified the colour of the peas in the crossed pod. After having examined these specimens, I crossed the same two varieties, and the peas in one pod, but not the pods them- selves, were clouded and tinted with purplish-red in a much more conspicuous manner than the peas in the uncrossed pods produced at the same time by the same plants. I may notice as a caution that Mr. Laxton sent me various other crossed peas slightly, or even greatly, modified in colour; but the change in these cases was due, as had been suspected by Mr. Laxton, to the altered colour of the cotyledons, seen through the transparent coats of the peas; and as the cotyledons are parts of the embryo, these cases are not in any way remarkable. Turning now to the genus Matthiola. The pollen of one kind of stock sometimes affects the colour of the seeds of another kind, used as the mother-plant. I give the following case the more read- ily, as Gärtner doubted similar statements with respect to the stock previously made by other observers. A well-known horticulturist, Major Trevor Clarke, informs me 120 that the seeds of the large red- 120 See also a paper by this observer, read before the International Hort. and Bot. Congress of London, 1866. CHAP. XI. 479 ELEMENT ON THE MOTHER FORM. flowered biennial stock (Matthiola annua ; Cocardeau of the French) are light brown, and those of the purple branching Queen stock (M. incana) are violet-black; and he found that, when flowers of the red stock were fertilised by pollen from the purple stock, they yielded about fifty per cent. of black seeds. He sent me four pods from a red- flowered plant, two of which had been fertilised by their own pollen, and they included pale brown seed: and two which had been crossed by pollen from the purple kind, and they included seeds all deeply tinged with black. These latter seeds yielded purple-flowered plants like their father, whilst the pale brown seeds yielded normal red- flowered plants; and Major Clarke, by sowing similar seeds, has ob- served on a greater scale the same result. The evidence in this case of the direct action of the pollen of one species on the colour of the seeds of another species appears to me conclusive. In the foregoing cases, with the exception of that of the purple-podded pea, the coats of the seeds alone have been affected in colour. We shall now see that the ova- rium itself, whether forming a large fleshy fruit or a mere thin envelope, may be modified by foreign pollen, in colour, flavour, texture, size, and shape. The most remarkable instance, because carefully recorded by highly competent authorities, is one of which I have seen an account in a letter written, in 1867, by M. Naudin to Dr. Hooker. M. Naudin states that he has seen fruit growing on Chamærops humilis, which had been fertilised by M. Denis with pollen from the Phoenix or date-palm. The fruit or drupe thus produced was twice as large as, and more elongated than, that proper to the Chamærops ; so that it was intermediate in these respects, as well as in texture, between the fruit of the two parents. These hybridised seeds germinated, and produced young plants likewise intermediate in character. This case is the more remarkable as the Chamærops and Phoenix belong not only to distinct genera, but in the estimation of some botanists to distinct sections of the family. Gallesio 121 fertilised the flowers of an orange with pollen from the lemon; and one fruit thus produced bore a longitudinal stripe of peel having the colour, flavour, and other characters of the lemon. Mr. Anderson 122 fertilised a green-fleshed melon with pollen from a scarlet-fleshed kind; in two of the fruits "a sensible change was 121 Traité du Citrus,' p. 40. 122 Transact. Hort. Soc.,' vol. iv. p. 318. See also vol. v. p. 65. 480 CHAP. XI. DIRECT ACTION OF THE MALE perceptible; and four other fruits were somewhat altered both inter- naliy and externally." The seeds of the two first-mentioned fruits produced plants partaking of the good properties of both parents. In the United States, where Cucurbitacea are largely cultivated, it is the popular belief 123 that the fruit is thus directly affected by foreign pollen; and I have received a similar statement with respect to the cucumber in England. It is known that grapes have been thus affected in colour, size, and shape: in France a pale-coloured grape had its juice tinted by the pollen of the dark-coloured Tein- turier; in Germany a variety bore berries which were affected by the pollen of two adjoining kinds; some of the berries being only partially affected or mottled. 124 As long ago as 1751 125 it was ob- served that, when differently coloured varieties of maize grow near each other, they mutually affect each other's seeds, and this is now a popular belief in the United States. Dr. Savi 126 tried the experi- ment with care: he sowed yellow and black-seeded maize together, and on the same ear some of the seeds were yellow, some black, and some mottled, 127 the differently coloured seeds being arranged in rows or irregularly. Mr. Sabine states 128 that he has seen the form of the nearly globular seed-capsule of Amaryllis vittata altered by the application of the pollen of another species, of which the capsule has gibbous angles. Mr. J. Anderson Henry Mr. J. Anderson Henry 129 crossed Rhododen- dron Dalhousic with the pollen of R. Nuttallii, which is one of the largest-flowered and noblest species of the genus. The largest pod produced by the former species, when fertilised with its own pollen, 123 Prof. Asa Gray, ' Proc. Acad. Sc.,' the two parents do not readily unite, as Boston, vol. iv., 1860, p. 21. in the cases of Mirabilis and Dianthus 124 For the French case, see 'Proc. given a few pages back. Thirdly, in Hort. Soc.,' vol. i. new series, 1866, p. 50. crossed plants of a subsequent genera- For Germany, see M. Jack, quoted in tion, by reversion, through either bud or Henfrey's Botanical Gazette,' vol. i. p. seminal generation. Fourthly, by rever- 277. A case in England has recently sion to a character not originally gained been alluded to by the Rev. J. M. Berke- by a cross, but which had long been lost, ley before the Hort. Soc. of London. as with white-flowered varieties, which 125 Philosophical Transactions,' vol. we shall hereafter see often become xlvii., 1751-52, p. 206. striped with some other colour. Lastly, 126 Gallesio, Teoria della Riprodu- there are cases, as when peaches are pro- zione,' 1816, p. 95. duced with a half or quarter of the fruit 127 It may be worth while to call at- like a nectarine, in which the change is tention to the several means by which apparently due to mere variation through flowers and fruit become striped or mot- either bud or seminal generation. tled. Firstly, by the direct action of the 128 Transact. Hort. Soc.,' vol. v. p. pollen of another variety or species, as 69. with the above-given cases of oranges 129 Journal of Horticulture,' Jan. 20, and maize. Secondly, in crosses of the 1863, p. 46. first generation, when the colours of CHAP. XI. ELEMENT ON THE MOTHER FORM. 481 measured 13 in length and 11 in girth ; whilst three of the pods which had been fertilised by pollen of R. Nuttallii measured 15 inch in length and no less than 2 inches in girth. Here we see the effect of foreign pollen apparently confined to increasing the size of the ovarium ; but we must be cautious in assuming, as the follow- ing case shows, that in this instance size has been directly trans- ferred from the male parent to the capsule of the female plant. Mr. Henry fertilised Arabis blepharophylla with pollen of A. Soyeri, and the pods thus produced, of which he was so kind as to send me de- tailed measurements and sketches, were much larger in all their di- mensions than those naturally produced by either the male or female parent-species. In a future chapter we shall see that the organs of vegetation in hybrid plants, independently of the character of either parent, are sometimes developed to a monstrous size; and the in- creased size of the pods in the foregoing cases may be an analogous fact. No case of the direct action of the pollen of one variety on another is better authenticated or more remarkable than that of the common apple. The fruit here consists of the lower part of the calyx and of the upper part of the flower-peduncle 130 in a metamorphosed condi- tion, so that the effect of the foreign pollen has extended even be- yond the limits of the ovarium. Cases of apples thus affected were recorded by Bradley in the early part of the last century; and other cases are given in old volumes of the Philosophical Transactions ;132 in one of these a Russeting apple and an adjoining kind mutually affected each other's fruit; and in another case a smooth apple af- fected a rough-coated kind. Another instance has been given 132 of two very different apple-trees growing close to each other, which bore fruit resembling each other, but only on the adjoining branches. It is, however, almost superfluous to adduce these or other cases, after that of the St. Valery apple, which, from the abortion of the stamens, does not produce pollen, but, being annually fertilised by the girls of the neighbourhood with pollen of many kinds, bears fruit, “ differing from each other in size, flavour, and colour, but re- sembling in character the hermaphrodite kinds by which they have been fertilised.'' 133 130 See on this head the high autho- rity of Prof. Decaisne, in a paper trans- lated in Proc. Hort. Soc.,' vol. i. new series, 1866, p. 48. 131 Vol. xliii., 1744-45, p. 525; vol. xlv., 1747-49, p. 602. 132 Transact. Hort. Soc.,' vol. v. pp. 69 and 63. Puvis also has collected ('De 21 la Dégénération,' 1937, p. 36) several other instances; but it is not in all cases possible to distinguish between the di- rect action of foreign pollen and bud- variations. 133 T. de Clermont-Tonnerre, in 'Mém. de la Soc. Linn. de Paris,' tom. iii., 1825, p. 164 482 CHAP. XI. DIRECT ACTION OF THE MALE I have now shown, on the authority of several excel- lent observers, in the case of plants belonging to widely different orders, that the pollen of one species or variety, when applied to a distinct form, occasionally causes the coats of the seeds and the ovarium or fruit, including even in one instance the calyx and upper part of the pe- duncle of the mother-plant, to become modified. Some- times the whole of the ovarium or all the seeds are thus affected; sometimes only a certain number of the seeds, as in the case of the pea, or only a part of the ovarium, as with the striped orange, mottled grapes and maize, are thus affected. It must not be supposed that any di- rect or immediate effect invariably follows the use of foreign pollen: this is far from being the case; nor is it known on what conditions the result depends. Mr. Knight 134 expressly states that he has never seen the fruit thus affected, though he has crossed thousands of apple and other fruit-trees. There is not the least reason to believe that a branch which has borne seed or fruit direct- ly modified by foreign pollen is itself affected, so as sub- sequently to produce modified buds: such an occurrence, from the temporary connection of the flower with the stem, would be hardly possible. Hence but very few, if any, of the cases of sudden modifications in the fruit of trees, given in the early part of this chapter, can be ac- counted for by the action of foreign pollen ; for such modi- fied fruits have commonly been afterwards propagated by budding or grafting. It is also obvious that changes of colour in the flower which necessarily supervene long be- fore it is ready for fertilisation, and changes in the shape or colour of the leaves, can have no relation to the action of foreign pollen: all such cases must be attributed to simple bud-variation. The proofs of the action of foreign pollen on the mother- plant have been given in considerable detail, because this 154 Transact of Hort. Soc.,' vol, v, p. 68. CHAP. XI. 483 ELEMENT ON THE MOTIIER FORM. . action, as we shall see in a future chapter, is of the highest theoretical importance, and because it is in itself a re- markable and apparently anomalous circumstance. That it is remarkable under a physiological point of view is clear, for the male element not only affects, in accordance with its proper function, the germ, but the surrounding tissues of the mother-plant. That the action is anomalous in appearance is true, but hardly so in reality, for appa- rently it plays the same part in the ordinary fertilisation of many flowers. Gärtner has shown, as by gradually in- creasing the number of pollen-grains until he succeeded in fertilising a Malva, that many grains are expended in the development, or, as he expresses it, in the satiation, of the pistil and ovarium. Again, when one plant is fer- tilised by a widely distinct species, it often happens that the ovarium is fully and quickly developed without any seeds being formed, or the coats of the seeds are devel- oped without an embryo being formed within. Dr. Hil- debrand also has lately shown in a valuable paper that, with several Orchideæ, the action of the plant's own pol- len is necessary for the development of the ovarium, and that this development takes place not only long before the pollen-tubes have reached the ovules, but even before the placenta and ovules have been formed; so that with these orchids the pollen apparently acts directly on the ovarium. On the other hand, we must not overrate the efficacy of pollen in this respect ; for in the case of hy- bridised plants it might be argued that an embryo had been formed and had affected the surrounding tissues of the mother-plant before it perished at a very early age. Again, it is well known that with many plants the ovarium may be fully developed, though pollen be wholly excluded. And lastly, Mr. Smith, the late Curator at Kew (as I hear 136 135 Beitrage zur Kenntniss der Be- fruchtung,' 1814, s. 347-351. 136 Die Fruchtbildung der Orchideen, ein Beweis für doppelte Wirkung des Pollen,' Botanische Zeitung, No. 44 et seq., Oct. 30, 1963; and 1565, s. 249. 484 CHAP, XI. DIRECT ACTION OF THE MALE through Dr. Hooker), observed the singular fact with an orchid, the Bonatea speciosa, the development of the ovarium could be effected by mechanical irritation of the stigma. Nevertheless, from the number of the pollen- grains expended “in the satiation of the ovarium and pistil,”—from the generality of the formation of the ovarium and seed-coats in sterile hybridised plants,—and from Dr. Hildebrand's observations on orchids, we may admit that in most cases the swelling of the ovarium, and the formation of the seed-coats, are at least aided, if not wholly caused, by the direct action of the pollen, in- dependently of the intervention of the fertilised germ. Therefore, in the previously-given cases we have only to add to our belief in the power of the plant's own pollen on the development of the ovarium and seed-coats, its further power, when applied to a distinct species or variety, of influencing the shape, size, colour, texture, &c., of these same parts. Turning now to the animal kingdom. If we could imagine the same flower to yield seeds during successive years, then it would not be very surprising that a flower of which the ovarium had been modified by foreign pol- len should next year produce, when self-fertilised, off- spring modified by the previous male influence. Closely analogous cases have actually occurred with animals. In the case often quoted from Lord Morton,187 a nearly purely-bred, Arabian, chesnut mare bore a hybrid to a quagga; she was subsequently sent to Sir Gore Ouseley, and produced two colts by a black Arabian horse. These colts were partially dun-coloured, and were striped on the legs more plainly than the real hybrid, or even than the quagga. One of the two colts had its neck and some other parts of its body plainly marked with stripes. Stripes on the body, not to mention those on the legs, 137 Philos. Transact.,' 1821, p. 20. CHAP. XI. ELEMENT ON THE MOTHER FORM. 485 and the dun colour, are extremely rare, -I speak after having long attended to the subject,-with horses of all kinds in Europe, and are unknown in the case of Arabians. But what makes the case still more striking is that the hair of the mane in these colts resembled that of the quagga, being short, stiff, and upright. Hence there can be no doubt that the quagga affected the cha- racter of the offspring subsequently begot by the black Arabian horse. With respect to the varieties of our do- mesticated animals, many similar and well-authenticated facts have been published,138 and others have been com- municated to me, plainly showing the influence of the first male on the progeny subsequently borne by the mother to other males. It will suffice to give a single in- stance, recorded in the Philosophical Transactions,' in a paper following that by Lord Morton: Mr. Giles put a sow of Lord Western's black and white Essex breed to a wild boar of a deep chesnut colour; and the “pigs pro- duced partook in appearance of both boar and sow, but in some the chesnut colour of the boar strongly prevailed.” After the boar had long been dead, the sow was put to a boar of her own black and white breed,-a kind which is well known to breed very true and never to show any chesnut colour, -yet from this union the sow produced some young pigs which were plainly marked with the same chesnut tint as in the first litter. Similar cases have so frequently occurred, that careful breeders avoid putting a choice female to an inferior male on account of 138 Dr. Alex. Harvey on 'A remark- able Effect of Cross-breeding,' 1851. On the Physiology of Breeding,' by Mr. Reginald Orton, 1855. "Intermarriage,' by Alex. Walker, 1837. L'Hérédité Naturelle,' by Dr. Prosper Lucas, tom. ii. p. 58. Mr. W. Sedgwick in 'British and Foreign Medico-Chirurgical Review, 1863, July, p. 183. Bronn, in his 'Ge- schichte der Natur,' 1843, B. ii. s. 127, has collected several cases with respect to mares, sows, and dogs. Mr. W. C. L. Martin ("History of the Dog,' 1845, p. 104) says he can personally vouch for the influence of the male parent of the first litter on the subsequent litters by other fathers. A French poet, Jacques Savary, who wrote in 1665 on dogs, was aware of this singular fact. 486 CHAP, XI. CONCLUSION AND SUMMARY the injury to her subsequent progeny which may be ex- pected to follow. Some physiologists have attempted to account for these remarkable results from a first impregnation by the close attachment and freely intercommunicating blood vessels between the modified embryo and the mother. But it is a most improbable hypothesis that the mere blood of one individual should affect the reproductive organs of an- other individual in such a manner as to modify the sub- sequent offspring. The analogy from the direct action of foreign pollen on the ovarium and seed-coats of the mother-plant strongly supports the belief that the male element acts directly on the reproductive organs of the female, wonderful as is this action, and not through the intervention of the crossed embryo. With birds there is no such close connection between the embryo and mother as in the case of mammals : yet a careful observer, Dr. Chapuis, states 139 that with pigeons the influence of a first male sometimes makes itself perceived in the suc- ceeding broods; but this statement, before it can be fully trusted, requires confirmation. Conclusion and Summary of the Chapter. The facts given in the latter half of this chapter are well worthy of consideration, as they show us in how many extraordina- ry modes one organic form may lead to the modification of another, and often without the intervention of seminal reproduction. There is ample evidence, as we have just seen, that the male element may either directly affect the structure of the female, or in the case of animals lead to the modification of her offspring. There is a considerable but insufficient body of evidence showing that the tissues of two plants may unite and form a bud having a blend- ed character; or again, that buds inserted into a stock may affect all the buds subsequently produced by this 139 "Le Pigeon Voyageur Belge,' 1865, p. 59. CHAP. XI. 487 OF THE CHAPTER. stock. Two embryos, differing from each other and con- tained in the same seed, may cohere and form a single plant. Offspring from a cross between two species or varieties may in the first or in a succeeding generation revert in various degrees by bud-variation to their parent- forms; and this reversion or segregation of character may affect the whole flower, fruit, or leaf-bud, or only the half or smaller segment, or a single organ. In some cases this segregation of character apparently depends on some in- capacity of union rather than on reversion, for the flow- ers or fruit which are first produced display by segments the characters of both parents. In the Cytisus adami and the Bizzarria orange, whatever their origin may have been, the two parent species occur blended together un- der the form of a sterile hybrid, or reappear with their characters perfect and their reproductive organs effec- tive; and these trees, retaining the same sportive charac- ter, can be propagated by buds. These various facts ought to be well considered by any one who wishes to embrace under a single point of view the various modes of reproduction by gemmation, division, and sexual union, the reparation of lost parts, variation, inheritance, rever- sion, and other such phenomena. In a chapter towards the close of the following volume I shall attempt to con- nect these facts together by a provisional hypothesis. In the early half of this chapter I have given a long list of plants in which through bud-variation, that is, in- dependently of reproduction by seed, the fruit has sud- denly become modified in size, colour, flavour, hairiness, shape, and time of maturity ; flowers have similarly changed in shape, colour, and doubleness, and greatly in the character of the calyx; young branches or shoots have changed in colour, in bearing spines, and in habit of growth, as in climbing and weeping; leaves have changed in colour, variegation, shape, period of unfolding, and in their arrangement on the axis. Buds of all kinds, whether produced on ordinary branches or on subterranean 488 CTAP. XI, CONCLUSION AND SUMMARY stems, whether simple or, as in tubers and bulbs, much modified and supplied with a stock of nutriment, are all liable to sudden variations of the same general nature. In the list, many of the cases are certainly due to re- version to characters not acquired from a cross, but which were formerly present, and have been lost for a longer or shorter period of time ;-as when a bud on a variegated plant produces plain leaves, or when variously-coloured flowers on the Chysanthemum revert to the aboriginal yellow tint. Many other cases included in the list are probably due to the plants being of crossed parentage, and to the buds reverting to one of the two parent-forms. In illustration of the origin of Cytisus adami, several cases were given of partial or complete reversion, both with hybrid and mongrel plants; hence we may suspect that the strong tendency in the Chrysanthemum, for instance, to produce by bud-variation differently-coloured flowers, results from the varieties formerly having been intention- ally or accidentally crossed ; and that their descendants at the present day still occasionally revert by buds to the colours of the more persistent parent-varieties. This is almost certainly the case with Rollison's Unique Pelargo- nium; and so it may be to a large extent with the bud- varieties of the Dahlia and with the 6 broken colours" of Tulips. Many cases of bud-variation, however, cannot be attri- buted to reversion, but to spontaneous variability, such as so commonly occurs with cultivated plants when raised from seed. As a single variety of the Chrysanthemum has produced by buds six other varieties, and as one va- riety of the gooseberry has borne at the same time four distinct varieties of fruit, it is scarcely possible to believe that all these variations are reversions to former parents. We can hardly believe, as remarked in a previous chapter, that all the many peaches which have yielded nectarine. buds are of crossed parentage. Lastly, in such cases as that of the moss-rose with its peculiar calyx, and of the CAAP. XI. 489 OF THE CHAPTER. . rose which bears opposite leaves, in that of the Imato- phyllum, &c., there is no known natural species or seed- ling variety, from which the characters in question could have been derived by crossing. We must attribute all such cases to actual variability in the buds. The varie- ties which have thus arisen cannot be distinguished by any external character from seedlings; this is notoriously the case with the varieties of the Rose, Azalea, and many other plants. It deserves notice that all the plants which have yielded bud-variations have likewise varied greatly by seed. These plants belong to so many orders that we may infer that almost every plant would be liable to bud- variation if placed under the proper exciting conditions. These conditions, as far as we can judge, mainly depend on long-continued and high cultivation ; for almost all the plants in the foregoing lists are perennials, and have been largely propagated in many soils and under different climates, by cuttings, offsets, bulbs, tubers, and especially by budding or grafting. The instances of annuals vary- ing by buds, or producing on the same plant differently coloured flowers are comparatively rare: Hopkirk140 has seen this with Convolvulus tricolor; and it is not rare with the balsam and annual Delphinium. According to Sir R. Schomburgk, plants from the warmer temperate regions, when cultivated under the hot climate of St. Do- mingo, are eminently liable to bud-variation ; but change of climate is by no means a necessary contingent, as we see with the gooseberry, currant, and some others. Plants living under their natural conditions are very rarely subject to bud-variation : variegated and coloured leaves have, however, been occasionally observed ; and I have given an instance of the variation of buds on an ash-tree; but it is doubtful whether any tree planted in ornamental grounds can be considered as living under strictly natural 140 Flora Anomala.' p. 164. -490 CHAP. XI, CONCLUSION AND SUMMARY conditions. Gärtner has seen white and dark-red flowers produced from the same root of the wild Achillea mille- folium, and Prof. Caspary has seen Viola lutea, in a com- pletely wild condition, bearing flowers of different colours and sizes.141 As wild plants are so rarely liable to bud-variation, whilst highly cultivated plants long propagated by arti- ficial means have yielded by this form of reproduction many varieties, we are led through a series such as the following, -namely, all the eyes in the same tuber of the potato varying in the same manner,-all the fruit on a pur- ple plum-tree suddenly becoming yellow,-all the fruit on a doubled-flowered almond suddenly becoming peachlike, -all the buds on grafted trees being in some very slight degree affected by the stock on which they have been worked,—all the flowers on a transplanted heartsease changing for a time in color, size, and shape,—we are led through such facts to look at every case of bud-variation as the direct result of the particular conditions of life to which the plant has been exposed. But if we turn to the other end of the series, namely, to such cases as that of a peach-tree which, after having been cultivated by tens of thousands during many years in many countries, and after having annually produced thousands of buds, all of which have apparently been exposed to precisely the same con- ditions, yet at last suddenly produces a single bud with its whole character greatly transformed, we are driven to an opposite conclusion. In such cases as the latter it would appear that the transformation stands in no direct relation to the conditions of life. We have seen that varieties produced from seeds and from buds resemble each other so closely in general ap- pearance, that they cannot possibly be distinguished. Just as certain species and groups of species, when propa- gated by seed, are more variable than other species or 141 Schriften der Phys-Ökon. Gesell. zu Königsberg,' Band vi., Feb. 3, 1865, s. 4. CHAP XI, 491 OF THE CHAPTER. genera, so it is in the case of certain bud-varieties. Thus the Queen of England Chrysanthemum has produced by this latter process no less than six, and Rollison's Unique Pelargonium four distinct varieties; moss-roses have also produced several other moss-roses. The Rosaceæ have varied by buds more than any other group of plants; but this may be in large part due to so many members having been long cultivated; but within this one group, the peach has often varied by buds, whilst the apple and pear, both grafted trees extensively cultivated, have af- forded, as far as I can ascertain, extremely few instances of bud-variation. The law of analogous variation holds good with vari- eties produced by buds, as with those produced from seed: more than one kind of rose has sported into a moss-rose; more than one kind of camellia has assumed an hexagonal form; and at least seven or eight varieties of the peach have produced nectarines. The laws of inheritance seem to be nearly the same with seminal and bud-varieties. We know how com- monly reversion comes into play with both, and it may affect the whole, or only segments, of a leaf, flower, or fruit. When the tendency to reversion affects many buds on the same tree, it becomes covered with different kinds of leaves, flowers, or fruit; but there is reason to believe that such fluctuating varieties have generally arisen from seed. It is well known that, out of a number of seed- ling varieties, some transmit their character much more truly by seed than others; so with bud-varieties some re- tain their character by successive buds more truly than others; of which instances have been given with two kinds of variegated Euonymus and with certain kinds of tulips. Notwithstanding the sudden production of bud- varieties, the characters thus acquired are sometimes ca- pable of transmission by seminal reproduction : Mr. Ri- vers has found that moss-roses generally reproduce them- selves by seed; and the mossy character has been trans- 492 CHAP. XI, CONCLUSION AND SUMMARY ferred by crossing, from one species of rose to another. The Boston nectarine, which appeared as a bud-variation, produced by seed a closely allied nectarine. We have however seen, on the authority of Mr. Salter, that seed taken from a branch with leaves variegated through bud- variation, transmits this character very feebly; whilst many plants, which became variegated as seedlings, trans- mit variegation to a large proportion of their progeny. Although I have been able to collect a good many cases of bud-variation, as shown in the previous lists, and might probably, by searching foreign horticultural works, have collected more cases, yet their total number is as nothing in comparison with that of seminal varie- ties. With seedlings raised from the more variable culti- vated plants, the variations are almost infinitely nume- rous, but their differences are generally slight: only at long intervals of time a strongly marked modification appears. On the other hand, it is a singular and inexpli- cable fact that, when plants vary by buds, the variations, though they occur with comparative rarity, are often, or even generally, strongly pronounced. It struck me that this might perhaps be a delusion, and that slight changes often occurred in buds, but from being of no value were overlooked or not recorded. Accordingly I applied to two great authorities on this subject, namely, to Mr. Rivers with respect to fruit-trees, and to Mr. Salter with respect to flowers. Mr. Rivers is doubtful, but does not remember having noticed very slight variations in fruit- buds. Mr. Salter informs me that with flowers such do occur, but, if propagated, they generally lose their new character in the following year; yet he concurs with me that bud-variations usually at once assume a decided and permanent character. We can hardly doubt that this is the rule, when we reflect on such cases as that of the peach, which has been so carefully observed and of which such trifling seminal varieties have been propagated, yet this tree has repeatedly produced by bud-variation nec- CHAP. XI. 493 OF THE CHAPTER. tarines, and only twice (as far as I can learn) any other variety, namely, the Early and Late Grosse Mignonne peaches; and these differ from the parent-tree in hardly any character except the period of maturity. To my surprise I hear from Mr. Salter that he brings the great principle of selection to bear on variegated plants propagated by buds, and has thus greatly improved and fixed several varieties. He informs me that at first a branch often produces variegated leaves on one side alone, and that the leaves are marked only with an ir- regular edging or with a few lines of white and yellow. To improve and fix such varieties, he finds it necessary to encourage the buds at the bases of the most distinctly marked leaves, and to propagate from them alone. By following with perseverance this plan during three or four successive seasons, a distinct and fixed variety can generally be secured. Finally, the facts given in this chapter prove in how close and remarkable a manner the germ of a fertilised seed and the small cellular mass forming a bud resemble each other in function, in their powers of inheritance with occasional reversion,—and in their capacity for vari- ation of the same general nature, in obedience to the same laws. This resemblance, or rather identity, is ren- dered far more striking if the facts can be trusted which apparently render it probable that the cellular tissue of one species or variety, when budded or grafted on another, may give rise to a bud having an intermediate character. In this chapter we clearly see that variability is not ne- cessarily contingent on sexual generation, though much more frequently its concomitant than on bud-reproduc- tion. We see that bud-variability is not solely depend- ent on reversion or atavism to long-lost characters, or to those formerly acquired from a cross, but that it is often spontaneous. But when we ask ourselves what is the cause of any particular bud-variation, we are lost in doubt, being driven in some cases to look to the direct action of 494 CHAP, XI, CONCLUSION AND SUMMARY. the external conditions of life as sufficient, and in other cases to feel a profound conviction that these have played a quite subordinate part, of not more importance than the nature of the spark which ignites a mass of combusti- ble matter. END OF VOL. I. GARDENING FOR PROFIT, In the Market and Family Garden. BY PETER HENDERSON. FINELY ILLUSTRATED. This is the first work on Market Gardening ever published in this country. Its author is well known as a market gardener of eighteen years' successful experience. In this work he has recorded this experience, and given, without reservation, the methods necessary to the profitable culture of the commercial or MARKET GARDEN. It is a work for which there has long been a demand, and one which will commend itself, not only to those who grow vegetables for sale, but to the cultivator of the FAMILY GARDEN, to whom it presents methods quite different from the old ones gen- erally practiced. It is an ORIGINAL AND PURELY AMERICAN work, and not made up, as books on gardening too often are, by quotations from foreign authors. Every thing is made perfectly plain, and the subject treated in all its details, from the selection of the soil to preparing the products for market. CONTENTS. Men fitted for the Business of Gardening. The Amount of Capital Required, and Working Force per Acre. Profits of Market Gardening. Location, Situation, and Laying Out. Soils, Drainage, and Preparation. Manures, Implements. Uses and Management of Cold Frames. Formation and Management of Hot-beds. Forcing Pits or Green-houses. Seeds and Seed Raising. How, When, and Where to Sow Seeds. Transplanting, Insects. Packing of Vegetables for Shipping. Preservation of Vegetables in Winter. Vegetables, their Varieties and Cultivation. In the last chapter, the most valuable kinds are described, and the culture proper to each is given in detail. Sent post-paid, price $1.50. ORANGE JUDD & CO., 245 Broadway, New-York. Τ Η Ε SMALL FRUIT .CULTURIST. BY ANDREW S. FULLER. Beautifully Illustrated. We have heretofore had no work especially devoted to small fruits, and certainly no treatises anywhere that give the information contained in this. It is to the advantage of special works that the author can say all that he has to say on any subject, and not be restricted as to space, as he must be in those works that cover the culture of all fruits-great and small. This book covers the whole ground of Propagating Small Fruits, their Culture, Varieties, Packing for Market, etc. While very full on the other fruits, the Currants and Raspberries have been more care- fully elaborated than ever before, and in this important part of his book, the author has had the invaluable counsel of Charles Downing. The chapter on gathering and packing the fruit is a valuable one, and in it are figured all the baskets and boxes now in common use. The book is very finely and thoroughly illustrated, and makes an admirable companion to the Grape Culturist, by the same author. CONTENTS: CHAP. I. BARBERRY. CHAP. II. STRAWBERRY. CHAP. III. RASPBERRY. CHAP. IV. BLACKBERRY. CHAP. V. DWARF CHERRY. CHAP. VI. CURRANT. CHAP. VII. GOOSEBERRY. CHAP. VIII. CORNELIAN CHERRY. CHAP. IX. CRANBERRY. CHAP X. HUCKLEBERRY. CHAP. XI. SHEPERDIA. CHAP. XII. PREPARATION FOR GATHERING FRUIT. Sent post-paid. Price $1.50. ORANGE JUDD & CO., 245 Broadway, New-York. AMERICAN POMOLOGY. APPLES. By Doct. JOHN A. WARDER, PRESIDENT OHIO POMOLOGICAL SOCIETY ; VICE-PRESIDENT AMERICAN POMOLOGICAL SOCIETY. 293 ILLUSTRATIONS. This volume has about 750 pages, the first 375 of which are de voted to the discussion of the general subjects of propagation, nur. sery culture, selection and planting, cultivation of orchards, care of fruit, insects, and the like; the remainder is occupied with descrip- tions of apples. With the richness of material at hand, the trouble was to decide what to leave out. It will be found that while the old and standard varieties are not neglected, the new and promising sorts, especially those of the South and West, have prominence. A list of selections for different localities by eminent orchardists is a valuable portion of the volume, while the Analytical Index or Catalogue Raisonné, as the French would say, is the most extended American fruit list ever published, and gives evidence of a fearful amount of labor. CONTENTS Chapter 1.--INTRODUCTORY. Chapter II.-HISTORY OF THE APPLE. Chapter III.-PROPAGATION. Buds and Cuttings-Grafting-Budding-The Nursery. Chapter IV.-DWARFING. Chapter V.-DISEASES. Chapter VI. THE SITE FOR AN ORCHARD. Chapter VII.-PREPARATION OF SOIL FOR AN ORCHARD. Chapter VIII.-SELECTION AND PLANTING. Chapter IX.-CULTURE, Etc. Chapter X.-PHILOSOPHY OF PRUNING. Chapter XI.-THINNING. Chapter XII.-RIPENING AND PRESERVING FRUITS. Chapter XIII and XIV.-INSECTS. Chapter XV.-CHARACTERS OF FRUITS AND THEIR VALUE-TERMS USED. Chapter XVI.-CLASSIFICATION. Necessity for-Basis of-Characters-Shape-Its Regn- larity-Flavor-Color-Their several Values, etc., De- scriptiou of Apples. Chapter XVII.-FRUIT LISTS - CATALOGUE AND INDEX OF FRUITS. Sent Post-Paid Price $3.00. ORANGE JUDD & CO., 245 Broadway, New-York. COPELAND'S COUNTRY LIFE. A COMPENDIUM OF Agricultural and Horticultural PRACTICAL KNOWLEDGE. Beautifully Illustrated. It contains Descriptions, Hints, Suggestions, and Details of great value to every one interested in Fruit, Flowers, Vegetables, or Farm Crops. It con- tains 926 large Octavo Pages, and 250 Engravings. Describing and" Il- lustrating nearly the whole range of topics of interest to the FARMER, the GARDENER, the FRUIT CULTURIST, and the AMATEUR. It is adapted not only to those owning large and Elegant Estates, but con- tains directions for the best arrangement of the smallest Plots, down to the City Yard, the Roof or Window Garden, or the simple Flower Stand. It also gives an abstract of the Principles, Construction, and Management of AQUARIUMS. Among numerous other matters it treats of Draining, Giving best methods, estimates of cost, trenches, tiles, etc., thus enabling almost any one properly to perform this important work. Cattle are carefully noticed with reference to the special merits of dif- ferent breeds for dairying or fattening. Sheep Management, including Breeding, Feeding, Prices, Profits, etc., receives attention, and a very full treatise on the Merinos is given. Grape Culture occupies a large space, embracing the opinions of men in all parts of the country, as to best sorts, planting, training, diseases, and general management for home use or marketing. Full Lists of Ornamental Trees and Shrubs, Fruits, Flowers, Green and Hot-house Plants, etc., are given, with directions for management each month in the year. The Kitchen Garden receives particular attention, with iefer- ence to the best way to grow and preserve each kind of Vegetable. In short, as its name indicates, the book treats of almost every subject that needs consideration by those living in the country, or having any thing to do with the cultivation of the soil. Sent Post-Paid. Price, $5.00. NEW-YORK: Orange Judd & Co., 245 Broadway. MY VINEYARD AT LAKEVIEW ; OR, SUCCESSFUL GRAPE CULTURE, BY A WESTERN GRAPE GROWER. ILLUSTRATED. To any one who wishes to grow grapes, whether a single vine or & vine Fard, th book is full of valuable teachings. The author gives not only his success, but, what is of quite as much importance, his failure. It tells just what the beginner in grape culture wishes to know, with the charm that always attends the relation of personal experience. It is especially valuable as giving an account of the processes actually followed in CELEBRATED GRAPE REGIONS in Western New-York and on the shores and islands of Lake Erie. This book is noticed by a writer in the Horticulturist for August last as follows: "Two works very different in character and value have just been published, and seem to demand a passing notice. The better and less pre- tentious of the two is 'MY VINEYARD AT LAKEVIEW,' a charming little book that professes to give the actual experience of a western grape grower, de- tailing not only his successes, but his blunders and failures. It is written in a pleasant style, without any attempt at display, and contains much ad. vice that will prove useful to a beginner--the more useful because derived from the experience of a man who had no leisure for fanciful experiments, but has been obliged to make his vineyard support himself and his family." Written in a simple and attractive style, and relating the experience of one who felt his way along into the successful cultivation of a vineyard in Ohio.-Mass. Ploughman. It is the experience of a practical grape grower, and not the theory of an experi- menter. -Bath Daily Sentinel and Times. It has no superior as an attractive narrative of country life.- Hartford Daily Post. Many books have been written on the grape, but this is the only work that gives an account of grape growing as actually practiced at the successful vineyards in the grape region of the West, and will be welcomed by a large class of readers.-New-Bedford Standard. This little volume contains, in an attractive form, and in clear and concise language, just the information needed to enable any one to become thoroughly posted up in this delightful and profitable branch of horticulture.- Vermont Farmer. Just the manual for a beginner, by one who says "he is well rewarded in the success Butained." Adding, "It might have been reached in half the time, had I possessed the knowledge imparted to the reader of this book."-Boston Cultivator. Sent Post-paid. Price, $1.25. ORANGE JUDD & CO., 245 Broadway, New-York. THE AMERICAN Horticultural Annual FOR 1868. A Year-Book FOR EVERY HOME, The second number of this serial is now ready. It contains a popular record of horticultural progress during the past year, besides valuable articles from EMINENT HORTICULTURISTS. Among those who contributed to its pages are HON. MARSHALL P. WILDER, DOCTOR JOHN A. WARDER, PETER HENDERSON, S. B. PARSONS, THOMAS MEEHAN, JAS. J. H. GREGORY, JOSIAH HOOPES, GEORGE SUCH, WM. S. 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WEEKS, Esq., Secretary of the American Dairy- men's Association, in which he discusses the reasons for the best practice and the most approved apparatus, buildings, etc., fully il- lustrated, and is equally interesting to the practical dairyman and to the novice. Sewers and Earth-Closets In their relations to Agriculture, by Col. GEO. E. WARING, Jr. Winter Wheat, Describing, with engravings, new and valuable varieties by JOSEPH HARRIS and JOHN JOHNSTON ; an article upon Scythes and Cradles, By JOHN W. DOUGLAS, (fully illustrated ;) also articles on Horse- Breaking and on Bitting Colts, by SAM’L F. HEADLY, Esq., (il- lustrated ;) on Recent Progress in Agricultural Science, by Prof S. W. 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