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Tous les autres exempiaires originaux sont filmds en commenpant par la premidre page qui comporte une empreinte d'impression ou d'illustration et en terminant par la dernidre page qui comporte une telle empreinte. Un des symboles suivants apparaitra sur la dernidre image de cheque microfiche, selon le cas: le symbols — ► signifie "A SUIVRE", le symbols V signifie "FIN". Les cartes, planches, tableaux, etc., peuvent dtre filmds a des taux de reduction diffdrents. Lorsque le document est ^roi ,irand pour dtre reproduit en un seul cliche, ii est film^ & partir de Tangle sup6rieur gauche, de gauche A droite, 8t de haut en bas, en prenant le nombre d'images ndcessaire. Les diagrammes suivants illustrant la mdthoda 1 2 3 1 2 3 4 i 5 6 u \ t C A N A D A Bmtioni::uii^ nationale lp.M^ > I. VESUVIUS AND ITS NEIGHBORHOOD; MEMORANDA OF A VISIT IN 1852. j.».« 2. -ON ACCIDENTAL DISCOVERIES. \ TWO PAPERS READ BEFORE THE CANADIAN INSTITUTE, AND REPRINTED FROM THE CANADIAN JOURNAL, NO. 9, VOL. I., AND NO. 10, VOL. II. BY REV. HENRY SCADDING, D.D., Cantab. 1 TORONTO : THE COPP, CLARK COMPANY, LIMITRU, PRINTBRS. iSgt. u^^^^M^mi.^ 'I'^/SrSf s»iiag!^aa'' - 'E5Z3 5 SZ m s-d 60 VESUVIUS AND ITS NEIGHBORHOOD. Those who have visited Saratoga will perhaps remember the High -Rock Spring. It has its name from the circumstance that its water, containing much lime in solution, has formed a mound of calcareous matter some five feet high, with a well-defined central throat, up which the fluid column in former times ascended. This conical hillock must have had its beginning from the water in the first instance rising with force through the surface of the sofl, and depositing a sheet of calcareous matter. The same process going on from year to year, minute strata accumulated, until the present altitude of the mound was attained. The falling of <\ tree then caused a fracture in the mass, since which occurrence the water, ii stead of flowing over the top, has found a lateral outlet. ] We compare indeed small things with great, and slight with enormous energy ; but the High-Rock Spring may nerve to illustrate the manner in which volcanic hills are formed. An aperture is found, in the fissure we will suppose, in the crust of the earth ; fluid matter is forced up from below, and, as it spreads itself out around the orifice from which it issues, it becomes solid ; another ejection takes place : another thickness swells the dimensions of the growing mound : the process is repeated, until, in a succession of years, or in some in- stances in a few hours, a mountain is accumulated. A central channel is pre- served, up which fresh matter still ascends, except when the energy below diminishes or a side-vent is opened. All the mountain chains upon the globe, indeed, were probably thrown up by the force which we still see active in volcanoes. But with j;he majority of mountain chains there does nrt appear to have been any explosion. The elastic gases have lifted the superincumbent strata without forcing for themselves a passage. In many regions of the globe, semi-fluid granite just protruded itself through long fissures in the [overlying deposits, and became set — a ponderous ocean at the time, in some localities at least — tending to depress and perhaps cool the uprising mass. The mountains which we call volcanoes have, especially in regard to their upper portion and cone, grown by the accretion of ejected volcanic substances. In some volcanoes these ejections continue to take place from the original orifice or crater ; in others, the interior force has become diminished, so as to be cap- able of thrusting the molten fluid only up to a certain point, where it continues in a state of ebullition either visible to the eye, or concealed by a crust of solidi- fied lava ; in others lateral openings are formed at points below the ancient crater ; and in others the volcanic energy seems to have worn itself out. Of the last class are the extinct volcanoes of Auvergne and V^elay in France, of Catalonia in Spain, of the Eifel distri.^t in Germany : — of the next to the last are ^tna, the Peak of TeneriflFe, and Cotopaxi : — of the next preceding, Kirauea in Hawaii is an example : — and of the first mentioned numerous class, Vesuvius, the mountain in respect to which I am about to offer a few memoranda, is a type. Vesuvius, as compared w'.th other active volcanic mountains, takes a low place, being only 3,947 feet in height, while Antisana, in South America, the highest active volcano on the globe, is 19,137 feet high. But although Vesuvius is one of the humblest of volcanic mountains, it has from many circumstances received peculiar attention. It is conveniently acces- sible to European observers. It is situated in the midst of a region rich in as- jociations mythic and historic, unrivalled for physical beauty, and altogether strongly attractive to every imaginative and thoughtful person who has it in his power to visit foreign lands. It is a memorable moment when on waking in the morning and finding the steamer in which you have been travelling, still and at anchor, you are told that you are in the Bay of Naples. You hasten to the dock. You take an excited survey of the widely-sweeping panorama which overwhelms the eager eye. Ships in crowds are near you, and craft with the obliquely-set lateen yard-arms. Boats are moving silently on the .surface of the iridescent water, which is giving back from the eastern heavens the kindling glories of the rising sun. Sailors are rowing ashore ; you hear the regular creak of the row-locks as they work their oars, contrary to custom, with their faces towards the bow. Fishermen are paying out their long nets, hand over hand, indulging at the same time in a low chant-like song. In front of you, terrace rises above ter- race of cheerful habitations, crowned with monastic edifices and massive forti- fications. Behind you are castles and encircling moles — one bearing a colossal figure with hand upraised to bless (St. Januarius) — another sustaining a lan- terna or pharos-tower, whose light still gleams down towards you along the surface of theVater, though the day comes on apace. To add to the excite- ment of the scene — drawing again on the incidents of a morning indelibly im- pressed on my own recollection — a royal salute is fulminated from the castle on the left, which is no sooner ended, than responsively from another in the far distance on the right, a similar series of explosions takes place, each detonation following late after the quick scintillation of the flash, making the deck on which you stand to shake, and reverberating finely among the hills. Be it understood that the King has hail an additional Prince born within the palace which you see yonder near the shore, and a festival of sixteen days has been proclaimed — sixteen days, which, every morn and every eve, are to be signal- ized by similar stunning demonstrations, by illuminations also, and reviews and music, and whatever else may constitute a Neapolitan holiday. But of all the objects which attract the attention as you gaze around the grand panorama before you, two mountains, side by side, dose upon the right, isolated, of purple hue, and well-defined from base to summit, rivet at last the eye. On the morning already referred to, the glow of daybreak had outspread 1 itself immediately behind them. The planet Venus was splendidly conspicuous vertically over them, looking as if she had been a meteor, shot up and held suspended at the culminating point. And there she remained beautifully visible for a considerable time after the surrounding constellations had " paled their ineffectual fires " before the ascending sun. Over the easternmost of the two mountains rested what appeared at tlie moment to be a dark cloud, varying considerably in form, looking in shade quite black in parts, and occasionally rolling up pitchy volumes, like the smoke issuing from a great funnel of an Atlantic steamship when fresh coal is being put on below, the whole mass be- coming at last magnificently fringed with fiery gold, as the sun gradually emerged from behind it and pierced its murky folds. These twin-mountains together form Vesuvius. I observe in the ancient, so-called classic maps, that the name attached to the basin which we call the Bay of Naples is "Crater." The old observers had taken notice that there was in this locality a connected system of volcanic vents, and that Vesuvius, Volture, the Solfatara of the Phlegrsean fields, Avernus, Ischia, Stromboll, with ^tna, itself, were but minor forma- tions on the lip of a gigantic flue for the escape of the elastic gases, whose egress by their former channel the influx of the Mediterranean had checked. In that old appellation — " Crater " — have we not also a lingering reminiscence of a huge upheav{e for a short time, and ascend by some steps on the loft, and examine the dilapidated columbarium to which tradition points as once the receptacle of the ashes of Virgil. It is certain that the poet hatl a house on this hill, and that therein he composed his Ceorgics and Eclogues and the greater portion of his k' 14 ill 1 iEiieid. It is a spot which harmonizes well with the poet's memory, having within view numerous localities whose names have become household words through his pen — a spot rendered in an additional degree venerable now, by rem- iniscences of illustrious men, who, from Statins and Petrarch, to Milton, Thorn" son, and Gray, with pious steps, have visited it, — Milton at the tomb of Virgil ! Was it not there, while standing at the shrine of a kindred scul, that the in- spiration, already stirring the fair young English bard, shaped the effectual re- solve to leave words behind him which the world "should not willingly let die ? " — It is curious to remember that in the middle ages the name of Virgil ! was popularly known only as that of a magician — doubtless from the assumed familiarity wliich he exhibits in his 6th Book with the world of spirits. It was from the prevalence of this idea, that Dante made him the comluctor of himself through the realms below. — Dante in his turn was, for similar reasons, pointed at by tlie rustics of his day as the man who had visited the abodes of the dead. And to close the list of popular misunderstandings in respect to famous persons — Horace, by the peasantry in the neighbourhood of the Sabine farm, is at this moment believed to have been an Englishman, from the numer- ous English who take such pains to scramble to the spot. — But we must return to the tunnel below, which itself— though it bears to this day visible marks, not of the magician's wand, but of instruments more substantial — was once popu- larly attributed to the supernatural power of Virgil. It may be brielly described as 2,244 feet long, 21^ feet wide, from 69 to 25 feet in height ; gloomy, dusty, and unsavory. There are several other similar grottoes, as they are illusively called, in this neighbourhood — all artificial, and dating back before the Chris- tian era. They are short cuts from town to town, made through the rather soft volcanic rock. — You are now on the road which leads to Pozzuoli. You are in- terested at observing evidences of the latitude in which you are. You notice in the hills specimens of the palmetto-palm. You perceive the stone-pine — the familiar object in Italian views — stretching out its flat peculiar top. You see the aloe and the cactus in profusion. You observe peasants under trees dancing to the sound of the guitar. You meet rude ass-drawn and ox-drawn vehicles loaded with strange tropical-looking fruits and vegetables. You soon enter upon the Phlegnean fields in earnest. You arrive at the well known Lake Agnano — an irregularly-shaped ancient crater, three miles in circumference, filled with a sheet of water. From fissures in its walls issues sulphurous vapour of a temperature of 180" Fahrenheit, showing that a iiighly heated mass is not far off. Here you have exhibited to you the worM-famous but rather insignilicant Orottodvl Cane — a small cell containing a spiracle from below, up which rushes carbonic acid gas, mingled with steam — A little to the westward you come to another partially extinct erater — the Solfatara— an ir- regular oval plain, sounding treacherously hollow to the treail, and full of steaming and smoky fnmeroles, which at night emit a glow as from a furnace, showing that they communicate immediately with red-hot material. Within the base of what was the ancient cone of the Solfatara, in the far depths, water is incessantly heard in the act of boiling, in which state it finds an . 15 outlet. It is stated to be an aluminous water containing iron, lime, and free sulphuric acid. Some of the hills which form part of this ancient crater are white with an aluminous efflorescence. You next approach Astroni, a very perfect crater, four miles in circumfer- ence, bearing on its floor three small but deep lakes. It reminds you, on a small Scale, of those circular valleys, which, with the aid of a good telescope, you see on the surface of the moon. Indeed I doubt not but that in these Phle- grpean fields, we have by analogy many hints given of what we should meet with, were we permitted to takf a stroll on the lunar disc. — Travelling still westwards, you come next to a very conspicuous and perfectly formed crater, three miles and a half in circuniferenne — Monte Barbaro (the ancient Gaurus) — covered with vineyards producing ihe wine which Horace sings of as Falernian ; and near by are two more sii lilar craters, only smaller — Cigliano and Campana. Proceeding yet westwards, yt u come to Avernus itself, the dread entrance to Hades. In the old prehistorii era, this crater no doubt possessed some of the awfulness of the present interior of Vesuvius. The CuuiiBan colonists trans- planted to this neighbourhootl the myths of their native Greece, and easily established Campanian duplicates of their own Styx, Cocytus, and Acheron. Here is the scene of the well-known Nekuia of the 1 1th Book of the Odyssey, and of the descent of /Eneas in the Oth Book of the ^■Eneid. The ancient Italians must have enjoyed these referencos of the poets more keenly than modern readers can, Tbey must have felt the .-Eneid to have been a nalionnl poem much more thoroughly than we do — the mere namiixj of a locality being suffi- cient to call up to their minds the often visited spot — with its brilliant colouring and historic and poetic associations — .A.vernus is now a cheerful place ; a beau- tiful lake, abounding in fish, lies in its basin, and over it and on it feathered fowl sport with impunity. The etymology of Avernus (quassi Aofuon, " bird- less " is now supposed to be fanciful, though Virgil, and Lucretius before him, adopted it. The true origin of the name appears to be in the Phaniician Evoron, denoting "gloom" or "darkness." But though the old composition of the name may not be true, still it is probable that in the ancient times birds would seldom be seen about tlie spot. Instinct would load them to shun the breath of a volcano, as surely as it leads their congeners to revel so joyously, as we see them doing, in the wholesome spray of our Niagara. The hills on the northern side of this lake— the walls of the ancient crater — are richly covered with chestnut trees and vines. The rim of the bowl on the southern side has been broken down, just ac we have seen the southern side of the ancient crater of Vesuvius carried away. It is in consequence of a cele- brated " cut " made by Agrippa — the bold engineer statesman to whom Augus- tus owes so much of the eclat of his reign— that we see the lake of Avernua reduced to the limited dimensions of a mile and a half in circumference, and five hundred feet in depth. Between it and the sea, towards the south-east, we can see the famous Lacus Luci-inun, itself a crater, lower down on the Hank of the ancient volcano. Into this lake Agrippa admitted the sea by a canal ; then by another canal he let down Avernus into Lucrinus — thus forming a 16 magnificent double dock, where the Boman fleet, quadrupled, might float securely. This port, a grand topic with the poets and historians of the day, ex- isted in good order until A.D. 1538, when the long dormant volcano over which the united lakes reposed suddenly awoke. — A short distance to the south-east, yon may observe a conspicious hill, resembling the cone of a volcano. This is the celebrated Monte Xuovo, which was thrown up in the space of forty-eight hours on the occasion now spoken of. After a succession of volcanic shocks a fissure took place near the Lucrine Lake ; from the aperture rose to a great height, first cold water, then hot ; — then followed masses of aslies and lapilli, descending on the country in torrents of mud ; then followed voUies of dry ashes and red-hot pumice stones. And in forty-eight hours a hill was formed 440 feet in height, and a mile and a half in circumference, filling up a large portion of the Lucrine Lake, and ruining Agrippa's harbour. On the top of the hill is a crater one-fourth of a mile in circumference, and 419 feet deep. It is only of late years that the scoriae on its surface has become sufficienly decom- posed to admit of the growth of small trees thereupon. The line of the coast in the immediate neighbourhood was, during this explosion, elevated to such an extent that the sea seemed to have retired 400 paces. — The profusion of the mountain of JoruUo, in Mexico, inA.U. 1759, is a well known parallel to Monte Nuovo. Both are interesting, as throwing light on the nascent condition of volcanic hills. — To the south-west of Lucrine, you come to Fusaro (the old Acherusian), famous to this day for its oysters, another water-filled crater, and still further on is Mare Morte, another. To arrive at the latter, you pass through Elysium — the tract which is said to be the original and veritable proto- type of that fair creation of poets. To the north of Avernus, I should have mentioned just now, one more crater is traceable in this region ; and a fragment of its ancient walls constitutes the acropolis of the venerable Cumae, the earliest Greek settlement in Italy. — The Lake Licola, to the north of Cumse, which looks like one of the system of vol- canic lakes, which we have been tracing out, is in reality, it is said, the remains of the canal which N'ero is known to have commenced with the intention of carrying it through the Pontine marshes as far as Ustia. From Mare Morte, or rather from the beach called Miliscola — corrupted from Militis scliola, an ancient military parade-ground— we take the ferry and cross a narrow strait two miles to the island of Procida, and from thence, over two miles more of sea, to Ischia. These two pyramidal masses — so impressive on the memory of the visitor to Naples, and so celebrated in song and history — are stated by those wlio have scientifically examined them, to be parts of one great volcanic mountain. Here, prior to the awkening of Vesuvius in A. I). 79, was the principal safety valve of this fiery region — Homer, Pindar, Virgil, and Ovid celebrate the eruptions of Mount Epomajus in this identical Ischia ; and here Typhoeus was fabled to be buried. Once only since the Christian era, has it exhiljited activity. In 1,'}02 great damage was done by an eruption of lava. We now make the trajet back from Ischia to the mainland again. We pass the conspicuous promontory of Misenum — retaining, in accordance with the I 17 poet's prediction, " reternum per saecula nomen." On the left we coast along by the once voluptuous and still beautifully situated Bai* — the favorite water- ing place of southern Italy in its oM palmy days. As you gaze now in,to the sea two hundred yards from the shore, yon see the sunken substructions of villas, temples, and baths — the former haunts of luxurious emperors, patricians, poets, and orators. 'J'his coast, too, has known the presence of Hannibal, Alaric, Genseric, and Totila. — You luive Po/zuoli — the old Puteoli before you — cover- ing the flanks and summit of a bold hill jutting out into the sea ; the dark masses wliich you oljserve at regular distances above the sunny surface of the calm water, are the piers of- the ancient mole, once surmounted by a light. We land on the west side of the hill. We are conducted at once to the Serdpeou which stands near — a temple of the Egyptian Serdpis — a ruin which has become memorable among physical ol servers — as proving to the eye, l)y the pei forations of the marine borers called L thodomi in its still erect columns, that the laud subsequently to the erection c f the building, must have gently sunk and re- mained submerged for many y«'ars, and then that it must as gently again have been raised. The perforations on the columns are now seen at a height of twelve feet ; they cover a space of nine feet ; and then above them comes an uninjured space of t'..enty feet, which must have been the portion of the col- umns appearing above the surface of the sea, when the stratum on which they stand had sunk down to the lowest point. The shore is supposed to be again descending. In order to approach the pillars for close examination, you have to walk through an inch or two of salt water. The edifice has been large. Its exterior colonude was 140 feet long, 122 feet wide. Here was found the re- markable sitting-figure of Serdpis, having his hand on a three-headed dog, now to be seen in the Museum at Naples. W^e must not delay in Puteoli, though its associations tempt one to do so As the southern terminus of the Appian Way — a iiigh road to Rome — It was, before Naples existed, the principal focus of the Italian trade with the East. The Greek colonists *rom Cum?e called the place Dicsearchia ; but the lioraans preferred the appellation " Puteoli," as having, in sound at least, an allusion to the hot sulphureous " wells," which abound in this volcanic locality.— Here we tread in the foot-prints of St. Paul ; and standing on the now solitary beach we can perhaps more vividly realize the interesting fact tiian we do when sur- rounded by the mosaics and marbles which encrust his shrines in Rome. The Apostle, as we know from Acts xxvii. 13, landed at Puteoli a prisoner in chains, and after his perilous voyage was allowed to rest here for seven days. — On a neighbouring rising ground you may be cnnducte.l over a remarkably perfect amphitheatre [480 by 382 feet], where, in A.D. 66, Nero contended publicly with wild animals, and where, in the time of Diocletian, Januarius, the sup- poseti patron of Naples, with other Cliristians, suffered martydoni. Here you may also be conducted over no inconsiderable remains of the Villa Puteolana of Cicero — familiar to the reader of his letters to Atticus, and distinguished as the spot where he wrote his QiiiBstionen Acadeiniciv and his work Be Fato : and also as the place where the Emperor Hadrian died. 18 I - Passiug through Puteoli towards the east, yon come out on a noticeable stripe of land between the precipitous clifi" and the sea. By the marine deposits here found, mingled with the remains of human workmanship, it appears that this stripe, like the shore westward of Puteoli, has been successfully dej)res8ed and elevated. On the sides of the clitf, 35 feet above the present sea level, the borings of lithodomi may be observed, and on the summit of the cliff are sub* structions of villas which once overhung the sea. As you leave this narrow stripe, the road by which you travel passes through a massive stream of solid lava, which, in prehistoric times, flowed down from the Solfatara already visited, and here entered the sea in a stream one-fourth of a mile m breadth, and seventy feet in thickness. You pass, also, on the left, some stone quarries, in which, exposed to tho hottest rays of the sun, you see — for the first time perhaps, in your life — un- fortunate human beings working in iron fetters. Alas ! that the clank of those degrading links should be associated forever in the recollections of anyone with the name of Italy ! — The labourers in the stune quarries of Epipoloe — whom perhaps, your imaginations may summon up — were more happy. The fortune of war had placed them there. But what is it that, in the Neapolitan states, according to the testimony of Mr. Gladstone, causes men, and perhaps some of these, to be thus condemned to chains ? Proceeding by the coast road homewards towards Naples, you remark, to the westward of the heights of Posilipo, a few hundred yards from the shore, a small iilaud. This is Nisida, the last volcanic object in the neighbourhood of Vesuvius which we have to notice. It is a cone with an extinct crater, into which, on the south side, the sea finds an entrance by a breach in the rim. A convenient little harbour is thus formed. — You may gaze on the island of Nisida with interest, for several historical reasons. Here Lucullus, the cele- brated conqueror of Mithridates, possessed a villa which, a few years after his death, became remarkable as being the place where Marcus Junius Brutus retired after participating in the assasination of Caesar, and where he left his Portia, the daughter of Cato, when he dparted for Greece, destined never to return. It was here, too, that the interview took place between him and Cicero, of which the latter has left a graphic account, wherein the orator declares that he found the patriot " nihil nisi de pace et concordia civinm cogitantem. " In yonder little volcanic isle we have, then, a memento of the final but unsuccessful struggle for Roman liberty. We, curiously enough, have before us in the same object the scene of the extinction of the Western empire itself in the peri:.on of its last chief. — In exile here, a pensioner on the generosity of Odoacer, the lirst king of Italy, lived and alk abroad ! We overlook the phenomenon as a mere trifle — the principle of which, however, might lead us at least to the iEolian harp — were we not long ftjrestalled in that ; and are absorbed — and justly so — in the sublimer contemplation of a system of artitieial nerves, gradu- ally throwing themselves out over the globe, along wliich may rush impulses from the will and soul of man. Of chance discoveries hinted at in very ancient history, I find one or two cases more. The gracefully-curling leaves of an Acanthus plant, surrounding a basket left by accident upon it, catch the eye of a sculptor who has a quick sense of the beautiful. A new style of ornament for the column is instantly conceived. The Corinthian capital thenceforward iu all after ages gives plea- sure to the frequenters of Ten.ple and Forum. Again the han ad playfully cut in relief the initials of his name, little dreamed he as the stain produced by the moist sap first at- tracted his attention, what a revelation had been made to him, and through him to the world. Metal types and the art of printing thus had their beginning. Bradley, the celebrated astronomer, (1748), is amusing himself with sailing on the Thames in a pleasure boat : the wind is blowing stiongly ; frc |uent tacks are made ; he notices that at every turn of the boat, the vane at the mast- head, instead of keeping steadily in the direction of the wind, exhibits an un- certain sort of motion. 1 y a train of reasoning he arrives at an important con- ciusion on the subject o ' the aberration of light, starting a theory that has relieved astronomers froLi a perplexity under which they had previously laboured. M. Malus, a French Colonel of Engineers, (1810), casually turning about in his hand a double refracting prism, as the sun is setting, observes one of the images of a window in the Palace of the Luxembourg disappear — and it leads him to the discovery which has rendered his name distinguished, of the polar- ization of light by reflection. We might narrate how friction on amber originated the science and name of electricity — how experiments with jet, with sealing wax and India Rubber, mignt lead to the same result — how Louis Galvani, (1737) at Bologna, by tak- ing notice of the spasmodic action of the legs of dead frogs when touched by his electrically- charged scalpel, discovered that phase of electric science that retains his name — how Masso Finiguerra, (1450) at Florence, while working at his business as an annealer of gold and silver, discovered the art of engraving on copper-plates, so as to obtain impressions on paper therefrom — how Louis Von Liegen, (1643,) — or, as some say, Prince Rupert — invented the process of mezzotint, by observing the corrosion of rust on a gun-barrel — how Alonzo Barba at Potosi, (1640,) happening to mix some powdered silver ore with quick- ailver — with the view of fixing, if possible, the latter substance — found all the pure silver of the ore absorbed by the quioksilver, and so arrived at the secret of forming amalgams — how the casual observation of Francis Joseph Gall, (1757,) while yet a boy at school— to the effect that those of his companions who had prominent eyes had facility in remembering words — led at last to liis curious theory of phrenology — how M. Argand, by perceiving a draught created by the passing, of the neck of a broken bottle over a flame was led to invent the well-known Argand Lamp — how M. de Courtois, (1813,) by acci- dent detected iodine in sea-weed, from which material, since his time, it has been extensively manufactured. These, and other equally interesting examples of happy discoveries by acci- dent, 7 might narrate at length ; but, I hasten to speak of the steam-engine, 26 vhose history presents us with actual anecdotes in point. With these I shall conclude. And first, the Marquis of Worcester, (1650,) while a political prisoner, in the Tower, conceives from the dancing motion of the cover of the vessel in which he is cooking his dinner, the idea of a piston driven by steam— an idea that results at last in the perfect engine of James Watt. Then, Capt. Savery, (1680,) flings into the fire a wine-flask from which he has just removed the contents ; he perceives that steam is generated by a few drops which remain in it. Something prompts him at this moment to snatch it from the Are, and to plunge its neck into a bowl of water ; the water rushes up into the body of the flask, a partial vacuum having been created therein. This leads him to the construction of the engine known by his name, useful for raising water from small depths. Again, up to the time of Newcomen, (1705,) the condensation of the steam within the cylinder was effected by the external application of cold water. He observes on one occasion that the piston continued its movements after the external application had ceased ; and the cause of this he find!> to be a jet of water entering the cylinder through a small aperture which had escaped his notice. A well known simplification of the engine is the consequence. Lastly, the boy Humphrey Potter, set to open and shut the steam valves, contrives by means of strings to make the working beam supply his place ; thus originating arrangements by which the beam is made to execute several secondary offices. The discoveries to which I have alluded, I have spoken of as accidental. This is a phraseology which we rather unreflectingly employ. Doubtless, all the capabilities of things — the agreeable as well as the useful — are intentional. They have existed from the beginning, and have been designed for the good of men ; and when an individual is so fortunate as to detect any one of them, he is simply fulfilling the Divine will. On looking back over history, I think too we can discern, in the case of several important discoveries at least, that the moment of their occurrence has not been utterly accidental. When the mariner's compass was invented, it was soon to be required. Columbus, Vasco de Qama and Cabot lived in the next age. When Lawrence Koster saw his initials impressed on paper from the piece of beech-bark, the intellect of the fifteenth century was heavint;, fer- menting—struggling for some means of embodying and circulating its aspira- tions, more rapid, more universal than the reed of the solitary scribe. The disclosure of the continent of America itself, had it no connection at the time with the approaching overburdened condition of the population of the old world, with its social theories becoming obsolete and requiring a free field in which to be re-constructed ? If such a view of events be well-grounded, what are we to think of the pre- «eot age T Is the curious aouumuUtion of wondera, in the midat of which we t 27 ) find ourselves, accidental? Are the facilities for intercommunication among our fellow-men, accidental ? Is the abundance of gold, accidental ? Is the perfection to which the arts — the certainty to which the sciences — are so rapidly tending, accidental ? If not, there are signs enough to invest this age with an enormous amount of interest — nay, with a degree of solemnity. For, what are our duties in such an age ? Surely our responsibilities are greater than those of our forefathers. The facilities which we enjoy — the powers which we are enabled to exert — were not intended to be mere toys for our amusement : are we not expected to work out \)rith them results which shall in some degree be proportionate to the trust ? All era of great importance is just opening upon ourselves. We are begin- ning to feel that the wavi of the world's movement has reached us, and that we are being lifted forwi rds on its tide. Our opportunity has arrived j we shall, I doubt not, embrace it with energy. It is in such times, in most countries, that ideas of sterling value are struck out. We may expect to see an intellectual activity among ourselves surpass- ing any that has as yet characterized us. One remark it will be useful to add. In every instance which I have adduced of what I have called " accidental dis- coveries," the accident was such as would be very unlikely to occur to an un- observant, unthinking, badly-informed person. The more observant — the more thoughtful — the more completely informed we are — each in our several profes- sions — the more likely we may be sure, we shall be, to light on ideas that will be of practical advantage to the world. Let each man stand, then, judiciously on the watch, and challenge every phenomenon wit!h intelligence. Nature is not exhausted ; there are yet latent secrets within her stores. Clues to additional truths are floating about in the air above, in the water beneath ; let but the observer come who has the eye to see, the hand to lay hold of them. In arrangements already established, there are combinations and simplifications possible, which may eclipse the original inventions on which they are founded. All countries have contributed names to the list of those who have made posterity mindful of them for services rendered in science and the arts. From the omens of her existing history, we cannot doubt but that Canada will con- tribute names to that list. In what direction will the tirst great manifestations be amongst us ? Will it be in the mill, or the loom, or the plough ? In the canal or the railway ? In the modes of navigation on lake and river ? In the purifying and working of the metals ? Will it be in the department of the chemist, the anatomist, the therapeutist ? Or will it be in the shape of literature and metaphysical specu- lation ? Our country has a wreath ready for each one of her sons who shall give to the question a practical response. 28 The paper on " Accidental Discoveries " was intended to be followed up by another which was to bear the title of " Nature's Hints." In this production the idea was to maintain that it was part of the Divine Plan gradually to edu- cate mankind in physical science and contrivances in the Arts, by means of phenomena in Nature, and the structure of various forms in the amimal kingdom. These were to be observed from time to time by the human mind and utilized practically. Thus the moon comparatively close at hand, gave iu its form, phases and movements, hints, for many a year not heeded, of things as they are in the solar system, and even in the larger universe beyond. That the earth itself was globular iu form like the laoon was shown oy the way in which the high summits of peaks and promontories presented themselves to the eye on a di:?tant ocean horizon, long before their massive bases are dis- covered, proving thtt the surface before the eye is spherical and not flat ; the same fact being also shown by the masts of ships when approaching the shore. That some such indrawing force as that which we now style gravitation existed, was proved by the manner in which ships everywhere adhered to the globular surface, and also by the manner in which the great unstabled sea itself kept in its bed ; a hint was thus given of that mighty and mysterious force by which under the Divine management the universe is held together so to speak. From a study of the anatomy of the eye resulted the Telescope in one direction and the Microscope in another. The study of the Trachea and Larynx would in due time suggest the organ pipe and ultimately the construction of the grandest of human musical inven- tions, the Church Organ. The primitive man doubtless very soon began to develope in some way the musical faculty that was in himy Resides being the possessor of the gift of articulate speech, he was (if one may so expresa himself) a humming and whistling animal ; and by having recourse to these powers which sometimes seem to us so trivial and commonplace, he was enabled to give utterance to certain simple combinations of sounds which gave pleasure to him, and which he would desire sometimes to recall, and give fixity to ; hence would be suggested at last the necessity of some musical notation, rude enough at the outset, but culminating at last in the elaborate score of a maestro, The computation of numbers began with the Fingers of the Human hand ; and the expansion of numerals to any extent by multiples of Ten, was sug- gested as the most convenient method. ^ mmrm ' 1 29 Useful implements for cutting and piercing were in due time suggested by the incisorial teeth of man and other animals, and the beaks of birds. The action of molars showed how the process of trituration might be performed in the case of seeds and contents of nuts. Such may have been the germ origin of the manufacture of flour. The shell of the sea shore used for the dipping up of fluids led to the use of the spoon ; the claw of the feline race probably in late ages gave rise to the fork. It is notorious that the nautilus and its occupant fur- nished the model for the oared galley. The inner rind of the Papyrus plant was soon seen to be a substance adapted to writing purposes, as also was the fine interior bark (liber) of the Linden and other trees, notably of the white birch so familiar to us Canadians. The form and fashion of the spider's web may have led the primeval man to a framework for the covt ring of his hut or tent. The fleecy gossamer of the same ingenious spinner, lesulted in many a textile fabric of a more substantial character. The tailor-biid showed how to fasten materials together by means of stitches. The chimney swallow performed the same feat by means of a fine glue. The hanging nests of the oriole, trochilus, and other birds suspended by loops of thread to branches of trees and shrubs existed before the powder wallets, and other pensile appliances employed by human beings about their persons and dwellings. The beautiful forms of minute ice crystals and the fern shaped tracings of hoar frost on smooth surfaces have supplied ideas for the ornamen- tation of dress-fabrics and the decoration of house interiors. ^/