ROYAL nlJSKKVATORY, GREENWICH. PHOTO-HELIOGRAPHIC RESULTS. 1874-1885. Gj) 1 1 lEi %f bris GIFT OF ^STKCNOMICAI, SOCIETY OP THE PACIFIC ? AR Y THE CAL SOCIETY PACIFIC PHOTO -HELIOGRAPHIC RESULTS 1874 TO 1885 Btnio LIBRARY OF THE ASTRONOMICAL SOC S I' 1' [> L E M K X T A It Y RES U LTS KU"M PHOTOGRAPHS OF THE SUN TAKEN AT GREENWICH, AT HARVARD COLLEGE, U.S.A., AT MELlini IN INDIA, AND IN MAURITIUS IN THE YEARS 1874 TO 1885: AND MEASURED AND REDUCED AT THK ROYAL OBSERVATORY, GREENWICH, \ DNDER THK DIRECTION OF s.u \V. H. M. CHRISTIE, K.C.B., M.A., D.Sc., F.R.S., ASTRONOMER-ROYAL. (Al'l'KXIHX TO THE GKKKNWICH OBSERVATIONS, 1905.) EDINBURGH: PRINTED FOR HIS MAJESTY'S ST AT I < i X I. I: V uKKtCE BY NEILL & CO., LIMITED, BKLLEVI K. 1907. /Via Ten Shilling*. [All RiyhU Retervtd.} PHOTO HBUooaAPBic RESULTS, 1874-85. GC, Astron ASTRONOMY DKPT, TABLE OF CONTENTS. BOO Wt: 15697/484 10/07-N. fc Co., Ltd. INTRODUCTION ......... KRKATA AND ADDITIONS . ........ xiii Measures of Positions and Areas of Sun Spots and Facula- on Photograplis taken 1874-1877 . . 1 Ledgers of Areas and Positions of Groups of Sun Spots for each day in the yean 1874-1877 . . 47 Ledgers o f Areas and Positions of Groups of Sun Spots for each day in the yean 1178-1881 . . 79 Ledgers of Areas and Positions of Groups of Sun Spots for each day in the years 1882-188$ . . 135 Total Projected Areas of Sun Spots and Faculse for each day in the years 1874-188$ Mean Areas and Mean Heliographic Latitude of Sun Spots and Faculae for each Rotation of tin- Sim from 1874 April 27 to 1886 January 16, and for each year from 1874 to 1885 . 313 701270 I MIOTO- HELIOGRAPH] C RESULTS, 1874-1885. INTRODUCTION. THK purpose of the present volume is to supplement the "Measures of Positions and Areas of Spots and Faculse upon Photographs of the Sun" for the years 1874 to 1885, as published in the volumes of the Greenwich Observations for the years 1877 to 1885, so as to render them uniform with the similiar results published for 1886 and the succeeding years. And this in two directions. First, by supplying as far as possible the gaps in the scries of solar photographs taken at Greenwich ; and next, by adding to the results of the measures of positions and areas of spots and faculaa as exhibited in calendar form the results of the measures in three other forms as well. These forms include ; first, " ledgers," wherein the life history is given for each group of spots as shown in its position and area day by day ; next, tables giving the total areas day by day of spots and faculae, as " projected," that is, as seen unconnected for foreshortening ; and third, tables of the mean areas and mean latitude of spots for each synodic rotation of the Sun, and for each year. Such "spot ledgers" and tables were given for the y.-n- 1886, and subsequent years, aijd are now supplied for the years 1874 to 1885. In the matter of supplying the days unrepresented in the series of photographs taken at Greenwich, the twelve years in question, 1874 to 1885, fill into three periods of four years each. For the first period, 1874 to 1877, a number of solar photographs taken at the Observatories of Harvard College, Cambridge, Mass., U.S.A., and of Mel- bourne, Australia, were placed by the Directors of those two Observatories in the hands of the Astronomer Royal, and have been measured and reduced at the Royal Observatory, Greenwich, and the results have been collated with the measures of the solar photographs taken at Greenwich for the same years. The first section of the present volume contains these combined results from the Greenwich, Harvard College, and Melbourne photo- graphs for the four years, 1874 to 1877, exhibited as a daily register, i.e. in calendar form ; the second section gives those results in the form of ledgers of the spot groups. For the second period, 1878 to 1881, the Solar Physics Committee obtained a number of solar photographs taken at Dehra Dun in India, and at Melbourne, besides a few taken in Mauritius, and these were measured and reduced at the Solar Ph\ Observatory, South Kensington, under the direction of Sir J. Norman Lockyer. Th- vi PHOTO-HELIOGRAPHIC EESULTS, 1874-1885. results were collated with the measures of the Greenwich photographs for the same years, and were published by the Solar Physics Committee in calendar form, in 1892. The results for these four years exhibited in the form of ledgers of spot-groups form the third section of the present volume. In the third period, 1882 to 1885, photographs taken at Dehra. Dun in India, necessary to fill the gaps in the Greenwich series, were sent to the Astronomer Royal by the Solar Physics Committee as required, and were measured and reduced at the Royal Observatory, Greenwich, together with the photographs taken at Greenwich ; the results in calendar form being published in the volumes of Greenwich Observations for 1882 and the following years. In 1885 photographs were also supplied in like manner from the Royal Alfred Observatory, Mauritius, and were measured and reduced together with the Greenwich and Dehra Dun negatives. The fourth section of the present volume gives the combined results for these four years, 1882 to 1885, in the form of ledgers of spot-groups. From the year 1886 the ledgers of spot groups have been given regularly in the annual volumes of Greenwich Observations. The fifth section gives the daily total projected areas of spots and faculse for the whole of the twelve years, 1874 to 1885, and the sixth, the mean areas and mean latitudes of spots for the same complete period. 1. Measures of Positions and Areas of Sun Spots and Faculce on Photographs taken at Greenwich, at Harvard, and at Melbourne, with the deduced Heliographic Longitudes and Latitudes ; 1874-1877. These measures are the republication, in a modified form, of the " Measures of Positions and Areas of Spots and Faculce" printed on pages 105-151 of the volume of Greenwich Observations for 1877, supplemented by measures of photographs taken at the Observatories of Harvard College, Cambridge, Mass., U.S.A., and of Melbourne, Australia, and placed in the hands of the Astronomer Royal for the purpose, of measurement and reduction by the Directors of those two Observatories, Professor Edward C. Pickering and Dr. Robert J. Ellery, F.R.S. The Greenwich photographs were taken with the Kew Photoheliograph of 3 '6 inches aperture up to 1875 September 17, and after that date with the Dallmeyer Photoheliograph of 4 inches aperture returned from the Transit of Venus Expedition to New Zealand. The Melbourne photographs were taken with an instrument of the same pattern and aperture as the Dallmeyer Photoheliograph ; and the Harvard College photographs were taken in the primary focus of a " horizontal photoheliograph" ; the sunlight being received upon a movable mirror from which it was reflected into a INTRODUCTION. vii stationary lens of 5 inches aperture and about 39 feet focal length. The mean diameter of the image of the sun with each of these diH'en-nt instruments was about 4 inches. The results of the measures of photographs of the Sun given in this volume, begin with 1874 April 17, on which date the regular work of the Photoheliographic I)fpartment was commenced at the Royal Observatory, Greenwich. The following table gives, for each of the three contributing observatories, the number of days in each year for which photographs of tin- sun taken there have been used for measure- ment and subsequent reduction. 1874. 1875. 1876. 1877. (From April 17.) Greenwich . 139 150 154 168 Harvard College 2 65 66 Melbourne ... 48 51 67 1 toys represented . . 141 263 271 23$ 1 >8VB without record . . 118 102 95 130 Total 159 365 366 365 I 'la 'first column on each page in this, the first section of the following results, cmitains the Greenwich civil time at which each photograph was taken, expressed by tin- day of tin year and decimals of a day, reckoning from Greenwich mean midnight, January Id. Oh., and also by the day of the mouth (civil reckoning), which latter is placed opposite the total area of spots and faculae for the day. In cases where two or more photographs taken on the same day have been measured, the mean of the several times has been given ; the positions and areas of the several spots and faculte as measured on the different photographs being similarly combined. The photographs tak-Mi at the Harvard College Observatory are distinguished by the letter H., those taken at the Melbourne Observatory by the letters Me. ; when no distinguishing letter is inserted in this column, the photograph was taken at Greenwich. The second column contains the initials of the two persons measuring the photo- graph ; the initial on the left buin^ that of the person who measured the photograph on the left of the centre of the measuring instrument, and that on the right being that of the person who measured on the right of the centre. The following are the signatures of those persons who measured the photograph* for the years 1874 to 1877: E. W. Maunder . M H. P. Hollis . 11 H. Appleyard . . A \V. 1 laker 1: F. .1. Bell . . JB A. E. Pilkington . EP W. Russell WK S. J. Temple viii PHOTO-HELIOGRAPHIC RESULTS, 1874-1885. The third column gives the No. of the group, and the letter for the spot. The groups are numbered in order of their appearance. The next two columns give the distance from the centre of the Sun in terms of the Sun's radius, and the position-angle from the Sun's axis, reckoned from the Sun's north pole in the direction n, f, s, p. The micrometer by which the measures of the photographs were made, and the processes of measurement and reduction are described in the Introductions to the annual volumes of the Greenwich Observations. The sixth and seventh columns give the heliographic longitude and latitude of the spot ; the inclination of the Sun's equator to the ecliptic being assumed to be 7 15', the longitude of the ascending node as 74, the prime meridian of the Sun that which passed through the ascending node at mean noon 1854 January 1, and the period of rotation 25 '38 days. The heliographie longitude and latitude of the centre of the Sun's disc at the time of the exposure of each photograph are also given (in brackets) in the sixth and seventh columns respectively. In the volume of Greenwich Observations for 1877 the longitudes, latitudes, and position-angles were expressed in degrees and minutes ; in the present volume they are given in degrees and tenths of a degree. The three last columns give the areas of umbrae, whole spots and faculse expressed in millionths of the Sun's visible hemisphere ; the total areas for each day being given (in brackets) in the last line for that day. The individual spots in a group have not always been measured separately, but have often been combined into clusters of two or more spots close together, the position of the centre of gravity and the aggregate area of the cluster being given. 2. Ledgers of Areas and Positions of Groups of Sun Spots deduced from the measurement of the Solar photographs for each day in the years 1874-1877. In these ledgers the daily results for each group are collected together from the measures of the individual spots as printed in the previous section, and given in a condensed form. The^rs^ column gives, for each day on which the group was observed, the Greenwich civil time at which each photograph was taken, expressed by the day of the month (civil reckoning) and the decimals of a day reckoning from Greenwich mean midnight. The second and third columns give the sums for each day of the projected areas of all the umbrae and whole spots comprised in the group, the projected area being the area as it is measured upon the photograph, uncorrected for foreshortening, and expressed in millionths of the Sun's apparent disc. The fourth and fifth columns give the sums for each day of the areas of all the umbrae and whole spots comprised in the group, corrected for foreshortening, and expressed in millionths of the Sun's visible hemisphere. The sixth and seventh columns give the mean longitude and latitude of the group, found by multiplying the longitude and latitude of each separately measured component of the group by its area, and dividing the sum of the products by the sum INTRODUCTION. ix of the areas. The last column gives the mean longitude of the group from the central meridian, and is found by subtracting the longitude of the centre of the disc from the mean longitude of the group. In cases where no photograph has been available for measurement on a given day, the means have been taken of the areas and positions of the spot-groups as measured on the day immediately preceding and that immediately following the day for which the photograph is lacking. These interpolated values are enclosed in brackets, but have been used in taking the final means for each spot-group. These means of the areas of umbne and whole spots and of the longitudes and latitudes of the spot-groups for the period of observation are given at the foot of the daily results. 3. Ledgers of Areas and Positions of Groups of Sun Spots deduced from the measurement of the Solar Photographs for each day in the years 1878 to 1881- This section contains ledgers of groups of sun spots similar in character and form to those given for the years 1874 to 1877 in the preceding section. The measures of Solar photographs here given in the form of ledgers were published in the form of a daily register, in the year 1892, by the Solar Physics Committee, under the title: Measures of Positions and Areas of Sun Spots and Faculse on Photographs taken at Greenwich, Dehra Dun, and Melbourne ; with the deduced heliographic longitudes and latitudes, 1878-1881. The photographs taken at Greenwich during these four years were measured and reduced there under the direction of the Astronomer Royal, and the results were published in the annual volumes of the Greenwich Observations for the years 1878 to 1881, and also in the Greenurich Spectroscopic and Photographic Results extracted from those volumes of the Greenivich Observations. The photographs taken at Dehra Dun and at Melbourne were measured and reduced at South Kensington, under the direction of the Solar Physics Committee, and were published in the year 1892 under the title quoted above, the Greenwich reductions (extracted from the volumes of Greenurich Observations) being interpolated for the sake of completeness. The position- angles, longitudes and latitudes given in the Greenwich results were at the same time altered from degrees and minutes to degrees and tenths of a degree. Wherever two photographs were measured on any day, the means of the two photographs have been taken in the preparation of these ledgers, both as to the times of the photographs, and as to the areas and positions of the spots. An additional column has also been supplied to indicate the place where the photograph was taken. A photograph taken at Greenwich is indicated by the letter G, one taken at Dehra Dun, in India, by the letter L, one taken at Melbourne, by the letters Me., and one taken in Mauritius, by the letters Ma. * PHOTO-HBUOOBAPHIC RMCLTS, 1874-1885. b x PHOTO-HELIOGRAPHIO RESULTS, 1874-1885. The photographs taken in Mauritius were under the superintendence of the late Dr. C. Meldrum, Director of the Royal Alfred Observatory, Pamplemousses, Mauritius. The majority of these showed neither spots nor faculse, being taken at a time of a pronounced minimum in the solar activity, and the absence of any features requiring measurement was recorded in the volume published by the Solar Physics Committee. But thirty-five photographs, taken at Mauritius and placed by Dr. Meldrum in the care of the Solar Physics Committee, showed spots or faculse or both and fill up gaps on twenty-three days for which no other photographs are at present available. These photographs have now been measured at Greenwich, so far as the areas of the spots and faculse are concerned ; but as the photographs are not provided with wires, it was not possible to compute the heliographic co-ordinates of the spot-groups, which have there- fore been simply interpolated from the results obtained on the days immediately preceding and following those on which the Mauritius photographs were taken. These interpolated values, like the values interpolated for days whereon no photograph is available, have been enclosed in brackets, but have been used in taking the final means for the spots-groups. The following table gives the number of days in each of the four years for which photographs are available from each of the four Observatories, distinguishing in each case between the photographs actually measured, and those showing neither spots nor faculse. 1878. 1879. 1880. 1881. Greenwich : Photographs measured ... 51 62 150 168 No spots or facul* .... 96 65 7 o Dehra Dun, India : Photographs measured . . . 41 23 146 170 No spots or f aculffl . . . . 113 52 22 i Melbourne, Victoria : Photographs measured ... 4 1 1 1 6 9 No spots or faculae o o o o Mauritius : Photographs measured ... 3 20 o o No spots or faculse 39 85 o o Days represented . 347 318 341 348 Days without record . ... 18 47 25 17 Total .... 365 365 366 365 All the photographs included in this section were on a scale of about 4 inches to the Solar diameter. INTRODUCTION. xi 4. Ledgers of A reas and Positions of Groups of Sun Spots deduced from the measurement of the Solar Photographs for each day in the years 1882 to 1885. This section contains ledgers of groups of sun spots precisely similar in character and form to those given for the years 1874 to 1877 in the second section, and to the ledgers for the year 1886 and the following years given in the annual volumes of Greenwich Observations for 1886 and subsequent years. The ledgers here given are derived from the Measures of Positions and Areas of Spots and Facula? published in the annual volumes of Greenwich Observations for the years 1882 to 1885, and in the Greenwich Spectroscopic and Photographic Results extracted from them. The photographs measured in thia section were taken at Greenwich under the direction of the Astronomer Royal, at Dehra Dun, North-West Provinces, India, under the direction of the Deputy Superintendent, Trigonometrical Survey of India, and at the Royal Alfred Observatory, Mauritius, under the direction of the late Dr. C. Meldrum. The following table gives the number of days for which each of the three observatories supplied photographs used for measurement in the four years 1882 to 1885. im. 1883. 1884. 1885. Greenwich .... 201 214 154 206 Dehra I'nu 142 126 161 128 Mauritius ..... ... ... ... 25 Days represented . 343 340 315 359 Days without record .... 22 25 51 6 Total 365 365 366 365 The photographs taken at Greenwich were on a scale of about 4 inches to the solar diameter up to 1884 April 2, and on a scale of nearly 8 inches from that date onwards; those taken at Dehra Dun were on the 4-inch scale up to 1882 November 7, and from 1882 December 8 to 1883 May 20, after which date they were on the 8-inch scale ; the photographs taken at Mauritius were on the 4-inch scale until the end of 1885 February, the 8-inch scale being adopted at the beginning of 1885 March. 5. Total Projected Areas of Sun Spots and Faculw for each day from 1874 April 17 to 1885 December 31. This section requires no further explanation and supersedes for the years 1882 to 1885 the corresponding tables given on pp. CO to 66 of the Greenunch Observations xii PHOTO-HELIOGRAPHIC RESULTS, 1874-1885. for 1888, and of the Results of the Spectroscopic and Photographic Observations made at the Eoyal Observatory, Greenwich in the year 1888, extracted from that volume. 6. Mean Areas and Mean Heliographic Latitude of Sun Spots and Faculce for each Rotation of the Sun from 1874 April 27 to 1886 January 16 and for each Year from 1874 to 1885. This section corresponds to the tables printed on pp. 106 to 112 of the Greenwich Observations for 1884, on pp. 103 and 104 of the Greenwich Observations for 1885, and on pp. 67 and 68 of the Greenwich Observations for 1888, and on the same pages of the Greenwich Spectroscopic and Photographic Results extracted from those three volumes. The. figures given in this section, being based upon the measures of a more complete series of photographs than those given in the corresponding tables published in the volumes for 1884, 1885 and 1888, naturally supersede them. The measurement of the photographs and the preparation of the tabular results contained in the present publication have been carried out under the immediate super- intendence of Mr Edward Walter Maunder, Superintendent of the Photo-heliographic Branch. W. H. M. CHRISTIE. Royal Observatory, Greenwich, 1907 July 20. ERRATA AND ADDITIONS. GREENWICH OBSERVATIONS 1877. MXASVXXS or POSITION* AND AREAS OF SPOTS AND FACULJL. PAOB. COL. LINE. 108 i 5 Men Sol ir Time, /or 154-691, read 154 -961. 109 I 34 Are* of Umbra, for 20, rtad 77. Are of Whole 8pot,/or 351, read 620. 35 Are* of Umbra, for 90, rtad 13. Are* of Whole Spot, /or 717, rtad 405. 37 Total Area of Umbrse,/or 130, read no. Total Area of Whole Spot*, /or 1767, rtad 1714. 114 i 19 Area of Umbra, /or no, read 89. An* of Whole Spot, for 641, read 522. 31 Arfa of Whole Spot,/or 60, rtad 73. 33 Total Area of Umbne,/or no, read 89. Total Area of Whole Spots, /or 701, read 595. 34 Area of Whole Spot, for 137, nod 193. 35 Area of Whole Spot,/or 53, read 65. 36 Total Area of Whole Spots, for 290, read 158. 117 i 11 Area of Whole Spot, far 13, read 26. 14 Total Area of Whole Spots, for 100, rtad 113. 119 2 12 Mean Solar Time,/or 31 '960, read 30*960. 14 Longitude, for 182 52', read 196 a'. 15 Mean Solar Time, for Feb. 2, rtad Feb. i. 16 Mean Solar Time, for 3i'975, read 30-975. 18 Longitude, for 183 8', read 196 18'. 19 Mean Solar Time, for Feb. 2, read Feb. i. 121 i 24 Area of Umbra, for 101, nod 63. Area of Whole Spot, for 597, rtad 376. 28 Total Area of Umbra, /or 101, read 63. 28 Total Area of Whole Spots, for 641, read 420. 29 Are* of Umbra, for 8 1. rtad 51. Area of Whole Spot, far 451, read 184. 33 Tot*l Area of Umbrte, for 8 1, read 51. Total Area of Whole SpoU,/or 478, read 311. 2 29 No. of Group, for 153*, read 153!. 37 Area of Whole Spot, /or 54, read 79. 3! Area of Umlira, for 34, read 32. Area of Whole Spot, for no, nod 105. 39 Are* of Umbra, for 93, read 80. Area of Whole Spot, for 494, read 419. 40 Total Area of Umbne,/or 127, read 112. Total Area of Whole Spots./or 658, read 613. 122 2 26 Area of Umbra./or 155, read 127. Area of Whole Spot, for 951, rtad 773. 27 Total Area of Umbne./or 183, read 155. Total Area of Whole Spots, for 1 119, nod 951. 124 2 26 Mean Solar Time,/or 182-918, read 181-918. Position Angle, for 148 14', rtad 148 30'. GREENWICH OBSERVATIONS, PAOB. COL. LIMB. 114 z 26 Longitude, /or 49 57', readb} it'. 27 Position Angle, for 181 33', rtad 282 o'. Longitude, /or 125 13', read 138 30'. Latitude, for +11 55', read +12 18'. 28 Mean Solar Time, for July 3, read July 2. 29 Mean Solar Time, for 182-934, read 181-934. Position Angle, for 148 21', rend 148 48'. Longitude,/or 49 52', rtad 63 6'. Latitude, /or 9 23', read a" 10'. 30 Position Angle,/or 281 23', rtad 281 54'. Longitude, for 125 n', rtad 138 14'. Latitude, for +11 46', rod -f 12 18'. 31 Mean Solar Time, for July 3, read July 2. 32 Mean Solar Time,/or 185-885, read 184-885. Position Angle, for 247 9', read 247* 42'. Longitude, for 49 35', rtad 63* o'. Latitude, for 9* 16', read 9* 6'. 33 Mean Solar Time,/or July 6, read July 5. 34 Mran Solar Time, for 185-901, read 184-901. Position Angle, for 247 33', read 248 6'. Longitude, for 49* 50', read 63* 1 2'. Latitude, for 9* 12', read 9* o'. 35 Mean Solar Time, for July 6, read July 5. 125 i 2 Mean Solar Time,/or 186-902, rtad 185-902. Position Angle, for 253* 27', read 253* 54'. Longitude, for 49 35', read 63" o'. Latitude, for 9 1 3', rod 8' 54'. 3 Mean Solar Time, for July 7, read July 6. 4 Mean Solar Tim,/or 186-955, rtai1 ' 8 5'955- Position Angle, for 253* 4', read 253 30'. Longitude, for 49* 44', rtad 63* o'. latitude, for 9 42', read 9" 24'. 5 Mean Solar Time, /or July 7, read July 6. '35 ' 37 Mean Solar Time,/or April ji, rtad May i. 137 i 33 Latitude, for +7* 26', read 7* 26'. 2 n Mean Solar Time, for July 23, read July 22. 139 First Not* Line 2. for Ma 5, 16, 18 to at, rtad May 5, it to 20. MEAN AREAS or UMBR.B, WHOLE SPOTS, AND FACPL*. FOB BACH ROTATION OF THE Srs, AND FOR BACH TEAK, FROM 1873 JULY it, TO THE BND OF 1877. Pages 149, 150 and 151. This Section is superseded by the corresponding Table* on psije* 314-317 of the present Volume. XIV PHOTO-HELIOGRAPHIC RESULTS, 1874-1885. GREENWICH OBSERVATIONS, 1878. MEASURES OF POSITIONS AND AREAS OF SPOTS AND FACUL.E. PAGE. COL. LINE. S6 i 37-39 The second photograph taken on 1878 March 5 has not been used for the Ledger of Groups of Sun Spots. z 9-10 No. of Group. Transpose 27 16 and 27 ic. 22 No. of Group, for 272, read 2726. 23 No. of Group, for 272,0, read 2720, 26 No. of Group, for 2720, read 2726. 27 No. of Group, for 2720, read zjza. MEAN AREAS OF UMBRJS, WHOLE SPOTS AND FAOUL^:, FOR EACH ROTATION OF THE SUN IN THE YEAR 1878, AND FOR THE YEAR. Page S9. This Section is superseded by the corresponding Tables on pages 314-317 of the present Volume. S3 GREENWICH OBSERVATIONS, 1879. OF POSITIONS AND AREAS OF SPOTS AND FACUL^:. 3 7 ( Diminish all longitudes from November 12 to g \ December 2 inclusive, by i 25'. MEAN AREAS OF UMBRAE, WHOLE SPOTS AND FACUL^;, FOR BACH ROTATION OF THE SUN IN THE YEAR 1879, AND FOR THE YEAR. Page 26. MEAN HELIOGRAPHIC LATITUDE OF THE SPOTS UPON THE SUN'S DISC, FOR EACH ROTATION OF THE SUN, AND FOR EACH YEAK, FROM 1874 APRIL 16, TO 1879 DECEMBER 27. Pages S6 to 28. These two Sections are superseded by the corresponding Tables on 314-321 of the present Volume. GREENWICH OBSERVATIONS, 1880. MEASURES OF POSITIONS AND AKEAS OF SPOTS AND FACUL-S. 67 i 26 -28 The second photograph taken on 1880 March 19 has not been used /or the Ledger of Groups of Sun Spots. US i 12 Distance, for 0-859, read 0-864. Longitude, for 174 25', read 174 52'. Latitude, for +19 4', read +19 32'. 13 Distance, for 0-859, read 0-854. Longitude, for 174 25', read 173 58'. Latitude, for +19 2', read +18 35'. 17 Distance, for 0-867, read 0-872. Longitude, for 174 47', read 175" 16'. Latitude,/or +18* 55', read +19 22'. 1 8 Distance, for 0-867, road 0-862. GREENWICH OBSERVATIONS, 1880 continued. PAGE. COL. LINE. 68 73 75 76 77 78 2 I I to 2 1 8 Longitude, for 174 46', read 174 15'. Latitude, for + 18 59', read +18 32'. 9 Mean Solar Time, for 153-074, nod 153*116. 10-14 Diminish all longitudes on June 2 by o 35'. 20 Distance, for 0-388, read 0-407. Position Angle, for 349 45', read 4 6'. Longitude, for 89 58', read 83 54'. Latitude, for +22 23', read +23 48'. Area of Whole Spot, for 19, read 14. 21 Total Area of Whole Spots,/or 77, read 72. 43-44 Area of (Jmbra, Transpose 89 and 9. Area of Whole Spot, Transpose 345 and 12. 31 Longitude, for 51 10', read 62 39'. Latitude, for 33 55', read 38 36'. 43 Area of Whole Spot, for 690, read 69. 12 Total Area of Whole Spots, for 1625, read 1004. 29 ) > Increase all longitudes on September 13 by i'o. Si 35 Latitude, for 29 10', read 20 10'. MEAN AREAS OF UMBR.E, WHOLE SPOTS AND FACUL.E, FOK EACH ROTATION OF THE SUN, IN THE YEAR 1880, AND FOR THE YEAR. Page S3. MEAN HELIOGRAPHIC LATITUDE OF THE SPOTS UPON THE SUN'S DISC FOR EACH ROTATION OF THE SUN, IN THE YEAR 1 880, AND FOR THE YEAR. Page 84. These two Sections are superseded by the Tables on pages 314-321 of the present Volume. GREENWICH OBSERVATIONS, 1881. MEASURES OF POSITIONS AND AREAS OF SPOTS AND FACULJE. Page 66, Column i, after line 28. Insert as follows : 4ioi 0-697 64 36 4106 0-734 64 18 2 37 3 + '3 18 o 21 23436+1436 o 17 66 i 30 Total Area of Whole Spots, for 730, read 768. 2 37 No. of Group, for 417, read 418. 67 2 15 Distance, for 0-795, read 0747. Longitude, for 260 2', read 264 31'. Latitude, for 17" 29', read 17 6'. 68 i 2 Mean Solar Time, for 74-695, read 74-965. 2 7 Longitude,/or 223* 22', read 225* 18'. 9 Longitude, for 170 3', read 169 53' Latitude, for +11 2', read +12 54'. 71 2 13-18 Diminish all longitudes by i o'. 74 i 28 Distance, for 0-632, read 0-684. Longitude, for 312 44', read 308 45'. Latitude, for +12 24', read +13 7'. Area of Whole Spot, for 70, read 75. 35 Total Area of Whole Spots, for 1396, read 1401. ERRATA. xv GREENWICH OBSERVATIONS, FACE. COL, LINK. 80 I 31-31 No. of Group, traniptt 553 mid 551. > 35 DUtanc,/or 0*562, read 0*536. Longitude, /or 19* 41', read 21* 30'. Latitude, />r -f-io* 10', read +19* 36'. SJ i 3 Longitude, /or 41* 22', read 40 22'. f i 7 Mean Solar Timr./or 3ii'928, rend 311*975. $-14 ZhminuA all longitudes by o* 40' x 1 1 Area "f Whole Spot, /or 16, re*/ 6. 18 Total Area of Whole Spot8,/or 1741, read 1731. 25 Distance, for 0*581, read 0*530. Longitude, far 14$" 8', read 151* 14'. Latitude, for +14* 54', read +22* 51'. 96 i 36 Distance, /or 0*477, od 0*416. Longitude, /or 28* 12', read 18* 8'. Latitude, for +18* 14', read +14* 5-9. MEAN AREAS or UMBRA, WHOLE SPOTS, AND FACULJS, FOR BACH ROTATION op THE SUN, IN THE YEAR 1881, AND FOR THE YEAR. Page 88. _MEAN HELIOGRAPH ic LATITUDE or THE SPOTS UPON THE SUN'S DISC FOR EACH ROTATION OF THE SUN, IN THE YEAH iSSl, AND FOR THE YEAR. Page 89. These two Sections are superseded by the Tables on pages 314-311 of the pnuent Volume. liuii GREENWICH OBSERVATIONS, 1881. 1 X I INDUCTION. 9 For on zn days, read on zoi days. 44 MEASURES OF POSITIONS AND AREAS OF SPOTS AND FACUL*. it i 27 Area of Whole Spot, for 78, read 8. 34 Total Area of Whole Spots, /or 344, read 274. 3 i 31 Longitude, for \ 7 <> *2, read 1 8 *i. 31 Area of Whole Spot, for 186, read 18. 39 Total Area of Whole Spots, for 817, read 649. 22 Longitude, /or 24i*8, read 24i*6. 46 No. of Group, for 666, read 668. Distance, for 0*84;, read 0*541. Longitude, for 262**6, read 239**!. Latitude, /or -f-i7**4, read +7**5- Area of Umbra, for 35, read 22. Area of Whole Spot, /or 199, read 127. Area of Faculae, dele 3331. 2 Area of Faculie, insert 33311. 14 Total Area of Umbrae, /or 269, read 256. Total Area of Whole Spots,/or 1856, read 1784. GREENWICH OBSERVATIONS, i882-m/nued. PAGE. COL. 4S i LINE. S3 SS 59 60 as 64 68 7S 7S 76 77 83 86 87 49 SI ' 33 34 35 36 J 4 5 9 Footnote. 33 4 6-10 ii 18 28 6 i '3 8 IX 16 3 4 9 iS 36-46 i- 6 16 3' 43 3 35 Area of Whole Spot, for 144, read 14. Total Ana of Whole Spots, /or 1041, read 912. Longitude, /T 159*3, rftui '5 8 '9- Total Area of Whole Spots, for 844, read 845. Area of Umbra, for 18, nod 32. Longitude, /or 2i*o, read 2i**o, Lougitude, for i'-6, read 3**5. Longitude, for 359**4, read o**3. Longitude, far 267*7, f*"^ 268**6. Total Area of Umbra, far 80, read 94. Area of Whole Spot, for 34, read 3. Total Area of Whole Spots, /or 742, read 711. Group 711. Omit, It is not seen on March 28 and 29, but appears again on March 30. Total Area of Umbne, /or 248, read 247. Area of Whole Spot, for 79, read 8. Total Area of Whole Spots, /or 2208, read 2137. Area of Umbra, for 271, read 162. Groups 733 to 738. Diminish all longitudes by o' 4. Total Area of Umbra, for 533, read 424. Area of Whole Spot, for 49, read 5. Total Area of Whole Spots, for 3376, rod 3332. Longitude, /or 2o**o, read *o"*i. Latitude, for i3**o, read 16**5. Longitude, for 332* '6, read 177'' J. No. of Group, for 789, read 787. Area of Whole Spot, for 316, read 32. Total Area of Whole Spots, for 397, rend 113. Arra of Whole Spot, for 166, read 17. Total Area of Whole Spots, for 491, read 341. Area of Umbra, for 97, read 36. Total Area of Umbra, /or 119, read 58. Longitude, for 86**7, read 286*4. Latitnde,/or +57, read +8**i. Oct. 20. Incrrate all longitudes on this day by i " o. No. of Group, for 859, read 862. Longitude, for i97''9, read i67**8. Area of Whole Spot, for 30, read 301. Total Area of Whole Spots,/or 817, read 1088. Total Area of Umbra, /or 93, read 94. Total Area of Whole Spots, for 1146, read 1147. MEAN AREAS OF UMBRA, WHOLE SPOTS AND FACUIJE, FOR EACH ROTATION OF THE SUN, FROM 1881 DECEMBER 8 TO 1883 JANUARY 18, AND FOR THE YEAR 1882. Page 88. MEAN HELIOORAPHIC LATITUDE OF THE SPOTS uros* THE Six's DISC FOR EACH ROTATION OF THE SUS, FROM l88l DECEM- BER 8 TO 1883 JANUARY 18, AND FOR THE YEAR 1882. PageS9. These two Sections an superseded by the Tables on pages 314-321 of the present Volume. XVI PHOTO-HELIOGRAPHIC RESULTS, 1874-1885. GREENWICH OBSERVATIONS, 1883. MEASURES OF POSITIONS AND AREAS OF SPOTS AND FACTTLJB. PAGE. COL. LINK. 73 74 75 15 18 23 7 19 20 Footnote. 78 2 22 32 81 i 26-30 85 2 34 S9 Footnote. 97 i 22 2 5 zi 95 i 37 Footnote. 97 99 21 34 36 32 46 JOS 1U4 Footnote. 105 i 8 Footnote. 101 Footnote. 108 110 112 IIS 116 118 779 120 727 i 20 24 27-34 37 i 23 24 i 32 34 47 6 15 26 31 4 14 4 Footnote. 18 42 9 21 28 48 Area of Whole Spot, for 224, read, 22. Longitude, /or i877, read i977. Total Area of Whole Spots, for mo, read 908. Total Area of Umbrae, for 152, read 142. Latitude, for +ii'o, read +n'4. Longitude, /or 266'9, read 266 '7 . For Jan. 29-Feb. i, read Jan. 28-Feb. i. Area of Whole Spot, for 17, read 169. Total Area of Whole Spots, /or 641, read 793. Mar. 18. Increase all longitudes by o'-g. Mean Solar Time. Insert Apr. 21. .For June 2-9, read June 2-10. No. of Group, for 1043, read 1045. Total Area of Umbrae, for i, read 19. Total Area of Faculae, /or 84, read 684. Mean Solar Time, for 1 89-084, read 1 89 '894. For July 14-16, read July 13-16. Total Area of Umbrae, for 314, read 311. Area of Umbra, for 22, read 12. Total Area of Umbrae, /or 73, read 63. Total Area of Umbrae, for 548, read 558. Latitude,/or ii'8, read +n'8. Group 1130, for Oct. 2-13, read Oct. 2-14. Mean Solar Time, for 277 '795, read 278 '6.44. Insert Group 1140, Oct. 9-18. A regular spot. Insert Oct. 14. Some of the groups on this day were measured on an Indian photograph, 285*644. Longitude, for 127'!, read i28'o. Area of Faculse,/or i86oc, read 48600. Groups 1 140-1147, increase all longitudes by o'9 Total Area of Faculse,/or 6353, read 9353. Area of Umbra, for i, read 4. Total Area of Umbrje, for 206, read 209. Mean Solar Time, for 306791, read 306707. Distance, dele o'84o. Position Angle, dele z%f"j. Area of Whole Spot, for 8, read 2. Total Area of Whole Spots, for 602, read 596. Area of Umbra, for i, read 2. Total Area of Umbrae, for 151, read 152. Area of Spot, for 86, read 9. Total Area of Whole Spots, for 2786, read 2709. Area of Umbra, for 33, read 3. Total Area of Umbra, for 303, read 273. Longitude, /or 105*7, ?-eod io5'6. Group 1204, for Dec. 10-20, read Dec. 10-21. Longitude, /or 354-3, read 3537. Total Area of Whole Spots, for 736, read 737. Total Area of Whole Spots, for 760, read 762. Longitude,/or 2i27, read 2ii7. No. of Group, insert 1204. Area of Umbra, for 24, read n. Area of Whole Spot,/or 191, read 86. Total Area of Umbrae, for 410, read 397. Total Area of Whole Spots, for 3258, read 3153. GREENWICH OBSERVATIONS, 1883 continued. PAGE. COL. LINE. 1ZS 2 14 Area of Whole Spot, for 114, read n. 39 Total Area of Whole Spots, for 2022, read 1919. MEAN AKEAS OF UMBBJE, WHOLE SPOTS, AND FACUL.E, FOK BACH ROTATION OF THE SUN FROM 1882 DECEMBER 23 TO 1*884 JANUARY 8, AND FOR THE YEAR 1883. Page 725. MEAN HELIOGRAPHIC LATITUDE OF THE SPOTS UPON THE SUN'S DISC FOR EACH ROTATION OF THE SUN, FROM 1882 DECEM- BER 23, TO 1884 JANUARY 8, AND FOR THE YEAR 1883. Page 726". These two Sections are superseded by the Tables on pages 314-321 of the present Volume. GREENWICH OBSERVATIONS, 1884. MEASURES OF POSITIONS AND AREAS OF SFOTS AND FACULJE. 41 i 30 Area of Umbra, for 10, read o. 37 Total Area of Umbrae, for 63, read 53. 2 5 Longitude,/or I40'9, read I37"9. 53 Footnote. Group 1293, for Feb. 22-27, read Feb. 21-27. 54 i 8-10 No. of Group,/or 1298, read 1299. 21 Area of Faculae, for 79860, read 7990. 25 Total Area of Faculae, for 10244, read 3057. 58 i 6 Total Area of Whole Spots, for 1759, read 1758. 2 33 Area of Umbra, for 2, read o. 59 i 4 Total Area of Umbrae, for 233, read 231. 62 i 4 Area of Umbra, /or 20, ?-ead 10. 16 Total Area of Umbrae, for 181, read 171. 72 i 6-19 No. of Group. Lower all these numbers for|May 29 two lines each. 39 | Mean Solar Time,/or 148-655, read 150-659. 74 i 5 Area of Umbra, for 5, read 10. 7 Total Area of Umbras, for 52, read 57. 24 Area of Umbra, for 10, read 13. 28 Total Area of Umbrae, for 54, read 57. 2 33 Area of Whole Spot, for 9, read i. 41 Total Area of Whole Spots./or 555, read 547. 33 j-Mean Solar Time, for 199-709, read 199-909. S2 i 27 Longitude, /or 224 '9, read 225-o. Latitude, for 7'!, read 7'o. i 10 Longitude, /or 222'o, read 222'2. 97 2 3 Area of Whole Spot, for 194, read 225. 17 Total Area of Whole Spots, for 679, read 710. 700 2 26 Area of Umbra, for 37, read 4. 33 Total Area of Umbrse,/or 162, read 129. 702 2 2 Mean Solar Time, for 346-148, read 346748. 76 77 ERRATA. XVll GREENWICH OBSERVATIONS, iW 4 continued. PAGE. COL. LINK. 203 i 5 Total Are* of Umbra;, /or 69, read 70. ii Longitude, /or zi8'4, rtad iis'5. Latitude, for 11*7, rtad n*'9. MEAN AREAS or UMBRA, WHOLE SPOTS AND FACULX FOR EACH SYNODIC ROTATION or THE SUN, FKOM 1(73 JULY 18. Pages 706 MEAN HEUOORAPHIC LATITUDE OF TUB SPOTS UPON THE SUN'S DlBC, FOR EACH SYNODIC ROTATION OF THE Su.S FROM 1874 APRIL 17 TO 18(4 DECEMBER 30. Pages 109 to ill. MEAN AREA* OF Una**, WHOLE SPOT* AND FACUL*. FOR BACH YEAR FROM 1873 TO 1884. Page lit. MEAN HBLIOORAPUIC LATITUDE or SPOTS UPON THE Sun's Disc, FOB EACH YEAR FROM 1874 TO 1884. Page//*. These four Sections are superseded by the corresponding Tables on pages 314-311 of the present Vol.me. Footnote. Footnote. Footnote. 67 i 7 68 i i 56 \ '/ 69 i 10 60 i S 61 i 33 <;.' i 10 GREENWICH OBSERVATIONS, 1885. MEASURES OF POSITIONS AND AREAS or SPOTS AKD FACUL*. 34 I 14 Area for Facul,/or 14, read 141. 15 Arra for Facule, far 68, read 677. 17 Total Area of Facula-, for 1145, rtad 1981. 36 I 16 Area of Whole Spot, /or 9, rtad 19. 18 Total Area of Whole Spots, for 57, read 67. * 35 Lougitude,/or i69-5, read i6 9 '6. 41 1 9 Longitude, /or i48-6, rorf 1 4 87. 10 Lougitnde,/ori46-i, rtad^6'-i. 1 1 Longitude, for 144' -i, read i46*'i. 10 Area of Whole Spot,/or 91, read 9. 11 Total Area of Whole Spots,/or 1331, read 1197 ll 35 6t Area of Umbra, for 6, read Total Areaof Umbni',/wr 190, rtad 185. i 1 8 Total Area of Whole Spots, for 1386, rtad 1378. 35 Total Area of Whole Spots,/or 1150, rtad 1158. i 11 Area of Whole Spot, for 96, rtad 10. 15 Total Area of Whole Spots,/or 2011, read 1916. i 7 Distance,/er 0-935, reorf 9-931. n Distance, /or 0-841, rtad 0-836. 11 1'istance, for 0-833, rca d 0-818. i i Longitude, for 144'4, read i4 3 *-6. 3 Longitude, /or 140*'5, nail 139*7. 4 Longitude, for 1357, read 136'4. PHOTO-HELIOGRAPHIC RESULTS, 1874-1885. GREENWICH OBSERVATIONS, 1885- FAOE. COL. LINE. SI i 5 Longitude, /or ii*'3, rtail in*"5. 64 * 17-11 Group 1639, tnercoK all longitudes by o*'3. 66 a 18 Area of Whole Spot, far i, rtad 3. 17 Total Area of Whole Spots, for 761, rtad 763. i 30-31 /fu*r< between lines 30 and 31, the following : 1651 1651 0707 0-691 158-5 *59'7 181*0 179-8 in lO'l o : 63 35 16 40 Group 1649, dele the entire line. Group 1649, /or April 16-18, rtad April 16-27. Gioup 1649, dele and 18. Group 1651, ilelf, It is not seen on April 18. Total Area of Whole Spots, for 941, rtad 940. Greenwich Civ 1 Time./or 114-159, rtad 114 -179. Area of Umbr*,/iir o, read i. Total Area of Umbne, for 111, read 114. Area of Whole Spot, for 69, read 7. Total Area of Whole Spots, for 1754, rtad 1691. Area of Umbra, for 31, rtad 11. Total Area of Uinbne, for 119, rtad 108. Area of Umbra, for i, read o. 13 Total Area of Umbne, for 60, read 67. 64 i 4 Total Area of Whole Spots, for 389, read 789. 66 a 33 Latitude, /or 11*7, read 1*7. 6*9 i 38 Longitude, /or 101* i, rearf ioi-i. Footnote. Group 1708, for June 10, read June 19-10. 76 i 19-11 No. of Group./or 1713, read 1713*. 15 Aren of Umbra, for 19, read i. 31 Total Area of Umbne, for 106, read 189. 75 Footnote, /tuerl Group 17*3*. July 17. Throe very small spots. 9 Area of Umbra, for i , read o. 14 Total Area of Umbr.e,/or 357, read 356. n Total Area of Umbne, for 109, rtad in. 3-4 Insert between lines 3 and 4 the following : 76 80 81 73* 0-364 191*9 ^ 14-1 4 81 i 13 Total Area of Whole Spots, for 763, read 767. 81 i 7 Area of Umbra, /or i, read o. 19 Total Area of Umbne, far 96, rtad 94. &J i ii-n Insert between lines ai and 21 the following: 1756* 0-804 87*1 7*8 + 6*6 o i* 83 i 15 Total Area of Whole Spots, for 933, rtad 957. Footnote. 7n*rrt Group 1756*. Aug. 18. A small spot. 84 i i No. of Group, /or 1759, rtad 1757. 89 i i Greenwich Civil Time./or 185-381, read 181-151. 98 i 17 Longitude, /or i8i*-o, read i8o'-|. j-No. of Group, for 1813, read 1813*. Footnote, /ruer* Group 1813*. Dec. n. Two very small spots. XV111 PHOTO-HELIOGRAPHIC RESULTS, 1874-1885. GREENWICH OBSERVATIONS, 1885 continued. GREENWICH OBSERVATIONS, 1885 continued. PAGE. COL. LINE. 10t i 5 Area of Whole Spot, for 30, read 16. 1885. o o o ii Total Area of Whole Spots, for 315, read 301. 242-210 H,SP 0-854 0-818 289-1 270"! 84-4 80-3 -f-20'I + 4' 2 7' "5 Photographs representing five days in 1885 have been obtained from i 54 0*770 0-628 248-6 242-4 72-2 59-8 11-4 II *O 12 88 361 the Royal Alfred Observatory, Mauritius, further supplementing the '754 0-580 243-6 57-0 8-8 4 '3 measures published in the Greenwich Observations for 1885. The '754 0-582 241 'o 56-8 10'2 16 results of the measures of these five photographs follow. These results hare been used in the formation of the Ledgers in the present Volume. '754 '754 '754 0'6l2 0-581 '557 O XQ4 235-9 238-5 241-9 2-31 'C 5 6 7 55'6 5-5 ' 54-8 -13*9 II-4 - 8-9 '4*4 "4 20 5 47 54 4 '754 J 7T 0-561 J 3 J 2 377 54*2 ii'i 7 1885. M 1758 0-450 239-9 48-4 - 6-4 I 4 212*414 a, H 0-964 2 47'9 134-6 + 22-8 29 ii. 1758 0-40O 232 9 44*1 7'' 4 23 '933 284-5 128-7 + '57 105 1756 0'2 1 6 168*4 22 '9 5-0 2 5 127 0-903 296-1 123-5 +26-1 189 1756 0-229 1 60*6 21 "O 3 19 0*891 252 o 119-4 13*0 344 1756 0-231 151-8 19-1 4-6 i 9 '735 0-886 250*5 118-5 -14-2 o 8 1756 0-268 140*6 I 5 -6 - 4-8 1 1 1 08 1732 733 248*1 103 'o i 1*6 10 49 1756 0-326 128-7 I0'7 47 '3 65 M. 733<* 733 0*445 0-486 165-7 166-7 !*! -19-5 7 40 9 '757 '757 0-688 0-714 80-7 34''7 339' 6 + 11-6 46 28 238 } 2 54 17336 0-497 i6o'o 48-7 21-8 33 202 0-822 IO2'6 331-8 6-0 126 '733 0-474 ,56-7 47-8 -19*8 3 0-854 77 '4 326-2 +'4-5 116 '733 0-529 '59'9 47*8 -23-8 5 0-939 104-1 3'7'7 10*6 1 6 1 '733 0-544 160*0 47 '4 24*7 o 4 Ang. 31 Centre (25-4) (+ 7--0 (182) (1080) (1205) '733 0-524 156-8 46*3 22-8 II 55 Aug. i Centre 0-927 109-5 354'3 '5 5 + 6-0) (61) (375) 275 (922) MEAN AREAS OF UMBR.-S, WHOLE SPOTS, AND FACUL.S FOR EACH ROTATION OF THE SUN, FUOM 1884 DECEMBER 31 TO 1885 *33'499 M, M 0-939 255*0 20 8 "o 11*5 1 60 DECBMBBK 20, AND FOR THE YEAR 1885. Page 103. 1750 0*768 272*8 190*9 + 6*6 2 6 7 c 1748 0*624 236-6 172-9 14-2 37 224 Aug. 22 Centre 140-5) 37) (226) (227) MEAN HELIOGRAPHIC LATITUDE OF THE SPOTS UPON THE SUN'S DISC FOR EACH ROTATION OF THE SUN, FROM 1884 234 '21 1 P,M 0-986 252*1 208-6 16-2 39 DECEMBER 31 TO 1885 DECEMBER 20, AND FOR THB YBAB 0-853 251-0 186-5 I2'I 107 1750 0-882 274-1 '93'3 + 7-0 8 '9 1885. rage Ivy. 1750 1750 0*863 0-845 273-2 191*0 189-0 + 6*4 2 2 '7 2 4 308 c These two Sections are superseded by the corresponding Tables on 1748 0-766 242-4 175-8 '57 i pages 314-321 in the present Volume. 1748 0-729 244-0 I73'3 13*4 37 203 1390 Iff 1748 0-718 241-8 171-8 14-5 i u 17540* 0-963 n 1 r\8 1 103-9 58-9 "'3 35 187 1 - - '754 '754 o 983 0-985 IO2'6 ioo'6 53' 6 52-6 9'' O o 59 34 r5' 6c 0-895 107-6 7'5 12-3 371 Aug. 23 Centre (131-1 (+7'' (84) (545) (1480) GREENWICH OBSERVATIONS, 1888. TOTAL PROJECTED AREAS OF UMBRJ-, WHOLE SPOTS, AND FACUL* FOR EACH DAY, AND MEAN PROJECTED AREAS FOB BACH 238*509 HB,P 0-837 237*1 123 b 22-5 5* ROTATION OF THE SUN, AND FOR EACH YEAR FROM 1882 TO '755 0-710 241-9 114-4 14-1 5 3 2 1885. Pages 69 to 68. '755 0-694 240-2 II2'6 -14-6 o 4 '755 0-672 2 37'4 IIO'I 15*4 ii 45 This Section is superseded by the corresponding Tables on pages '754 '754 0-414 0-449 '39'5 130-8 54-2 11*4 10-3 17 203 '4 305-321 in the present Volume. f '754 0*451 118-0 50-8 57 8 3' Mi 1756 0*832 100*9 19*4 5 <0 o 24 1756 0-860 IO2"O 16*7 6-5 o 19 1756 0*882 98*3 '3'5 3'9 12 1930 1756 0*891 99'3 12*5 5' o 79 1756 0*909 99 -o 10*2 5' '3 78 .756* 0*912 86-5 8*2 ' + 6*i 37 99<* Aug. 27 Centr (74-3) (+ 7'' (54) (578) (344) 1 ERRATA. xiz PUBLICATIONS OF THE SOLAR PHYSICS COMMITTEE. MJUSDUS OF POSITIONS AND AKEA.H or SUN SPOTS AND FAOUI.J* ON PBOTOOBAPIIS TAKEN AT UKIENWICH, DEHRA DON, AND MELBOURNE, WITH Tin DEDUCED HELIOOBAPUIC LONGITUDES AND LATITUDES, 1878-1881. PAGE. COL. LINE. 5 3' i 6-8 7 8 9 is 3 S 1 6 7 i* 19 20 Mean Solar Time, for Feb. 26, nod Feb. 26*. The second photograph on March 5 has not been used for the Ledger in the present Volume. 15 Mean Solar Time, for Jane 4, rtad 153-936. Area of Faculc, insert 5304. After Line 1 5 : Mean Solar Time, insert June 4. Total Area of Umbra-, insert (9). Total Area of Whole Spots, t-uvrt (52). Total Area of Karulte, insert (530). 4 Latitude, fur -}-i2*8, read +12*7. 8 Latitude./or + io*i, rend -f-io**o. 16 Total Area of Facul,/or 138, read 128. 44 Area of Umbra, for 6, read o. 5 Longitude, for 267**5, read 267**-. 6 Longitude, for 264**5, rtad 267*!. 25 Longitude, for 266**5, rtad 266-*. 40 Longitude, for 247, read 227. 2 3 Longitude, for 22*7, read 22-2. 2 35 Total Area of Umbrae, for 122, read 112. 2 22-23 The photograph on Jan. 29 has not been used for the Ledger, or for the computation of Projected Areas in the present Volume. 24 Mean Solar Time, for 29*136, read 29-036. 30 Latitude, fur I5**6, read 15"'5. 31 Latitude,/or -f i9*2, read -f-i9**j. 2 36 Total Area of Whole Spots, for 544, read 644. 40 Latitude, for +28-2, read +28'3. 37-38 J-No. of Oioup,/or 312, read 312*. 45-46 ) i 38 Total Area of Umbra-, for 40, raid 50. 41 Latitude, /or + I97, read -f9'6. 1 27 Latitude, /./r 20**3, read +2o*'3. 2 30 No. of Group, for 317, read 317*. i ii Position Angle, for 3Oi-6, read 301*'!. Longitude, for 2oi'*9, rtad 2oi**2. 36 Distance, for 0*859, Ttaa 0*864. Longitude, for i74*4, read I74**9. Latitude, /r +19-!, rcorf +19 '5. 37 Distance, fur 0*859, rtad 0*854. Longitude,/or I74*'4, read i74**o. Latitude, for I9**o, read +i8'-6. 41 Distance, /or 0-867, read 0-872. PAGE. COL. LINE. 20 i 41 Longitude, /or i74'*8, reorf I75**j. Latitude, for +i*"'9. read + I9*'o. 42 Distance, for 0-867, read 0-862. Longitude,/or i74'8, read 174*'}. Latitude, for + I9*'> read + i8'*5. 2 10 Position Angle, /or 244*6, read 244*'4. 21 2 30 Distance, for 0-394, read 0-398. 31 No. of Group, for 322, rend 320. 22 2 31 Area of Umbra, for n, reatl \. j i 13 Longitude, far 87*'6, rtad 87*7. 43 Total Area of Faculn, for 506, read 706. 14 i 45 Position Angle, insert 6o**5. 2 14 Longitude, /or I53"*3, read I53'5. 26 Position Angle, insert 5 5* '2. 15 i 15 Longitude, for 156*9, read i57*'o. 30 Distance, for 0-388, read 0-407. Position Angle, for 349'8, read 4*-6. Longitude, for <)O'o, read t}"'?. Latitude,/or + 22' - 4, read + 23*'8. Area of Whole Spot, for 19, read 14. 3 1 Total Area of Whole Spots, for 77, read 71. 49 Total Area of Whole Spots,/or 147, rtad 113. 2 37 Total Area of Umbra, iniert (150). Total Area of Whole Spots, iniert (619). Total Area of Faculs>, insert (1271). 26 i 52 Position Angle, insert 1 22 '5. 53 Position Angle, insert be/"-}. 2 12 Total Area of Umbrsj./or 190, rtad 196. 50 No. of Qroup,/or 333, read 333*. 17 i 6 No. of Group, for 333, read 333*. Area of Kaoulre, insert 34O/. 7 Area of Fa/mlre, insert \t)ie. it Latitude, for j6*"2, read j6"'o. 27 No. of Oronp,/or 333, read 333*. 2 18 Area of FscuUe, insert 722*. 25 Area of Faculss, insert 386;. 28 i 39 Total Area of Umbra, for 96, read 86. 29 i 50 Total Area of Whole Spots, /or 509, rtad 609. 2 12 Total Area of FacuUv, instrt (505). 30 i 17 Area of Facuke, insert 6j$f. 49 Latitude, for 13* -9, read il*"9. 2 35 Total Area of Whole Spots, for 1625, rtad 1004. 31 i 40 Total Area of Whole Spots, fur 197, nod 199. 2 \ Distance, insert 0*982. Between lines. I Position Angle, insert loi/'S. 26 and 27 J Area, insert 319. ji 2 45 Total Area of Umbra*, insert (127). Total Area of Whole Spot*, insert (605). Total Area of FacuUc, insert (1067). PHOTO- HELTOQRAPHIC EESULTS, 1874-1885. PAGE. COL. 12 2 33 34 35 37 LINB. 4 Position Angle, for 2o6*6, read 2o6*5. 8 Longitude, for 237*6, read Z377. 44 Position Angle, for 237*6, read 217"}. 8 Distauce,/or 0*673, ffod 0*675. 20 Position Angle, for H3**5, read ii3*8. 30 Longitude, /or 9i*4, read 9i*6. 19 No. of Group, for 360, read 361. 24 Position Angle, for 288*9, read 289*9. 16 Latitude, for i9*2, read 20 2. 45 Area of Faculfe, dele 49. 46 Total Area of Faculse, for 49, read o. 49 Total Area of Faculfe,/or 2618, read 2718. 26 Area of Faculfe, insert ujp. 45 No. of Group, for 373, read 373*. 8 No. of Group, for 373, read 373*. 33 No. of Group, fur 380, read 380^. Position Angle, for f>j'<), read 67*8. 40) 41 [-No. of Group, for 380, read 380*. 42 J 48 No. of Group, for 380, read 380!. * I No. of Group, for 380, read 380*. 26 *7 32 33 34 35 No. of Group, for 380, read 380!. '3 28 49 49 49 No. of Group, for 380 , read 38of. Total Area of Umbrse, insert (139). Total Area of Whole Spots, insert (574). Total Area of Faculse, insert (1090). 39 i 51 Total Area of Umbrae, for 22, read 26. 51 Total Area of Whole Spots, for 91, read 81. 40 i 17 Distance, for 0*916, read 0*915. 44 Total Area of Umbrse, insert (257). Total Area of Whole Spots, insert (1120). Total Area of Faculfe, insert (2594). , 40 2 5 Distance, for 0*989, read 0*939. 41 2 44 Area of Faculfe, insert 3440. 42 i 8 Position Angle, insert 62*3- 43 i 8 Mean Solar Time,/or Dec. 30, read Dec. 30*. Total Area of Whole Spots, for 560, read 494. 44 i i Distance, insert 0*918. Between lines j- Position Angle, insert io8*8. 36 and 37 J Area of Faculse, insert 286. 2 31 Total Area of Whole Spots,/or 738, read 753. 45 i 26 Total Area of Whole Spots,/or 1443, read 1439. 2 1 1 Total Area of Faculse, for 1902, read 1922. 30 Total Area of Umbrae, for 243, read 253. 46 2 17 Position Angle, insert 73*o. 47 i 17 Total Area of Faculfe, for 7264, read 6964. PAGE. COL. LINB 47 I 33 2 10 44 45 48 2 22 4' 4* 5 5 1 49 2 '5 30 5 I 3 2 8 9 '5 ,6 22 J 44 51 I 13 '4 52 I 3 2 47 53 I 36 2 27 54 I 24 43 2 39 46 55 I ii '4 14-19 29 57 2 40 58 2 7 30 37 59 I 46 47 2 18 63 I 7 2 5 '4 '5 2 5 64 I 4 2 47 65 2 ll 66 I 22 3 67 I ll *7 40 Total Area of Whole Spots, for 508, read 518. Total Area of Uinbra, for 194, read 204. Total Area of Faciilfe, for 2418, read 2218. Mean Solar Time, insert 54*923. Position Angle has been omitted, and cannot now be supplied. Latitude, for + i8*5, read 18*5. Latitude, for 197, read +I97. Area of Umbra, for 5, read 9. Distance, for 0*779, read 0*979. No. of Group, for 434, read 433. Mean Solar Time, for 74*695, read 74*965. Area of Faculse, insert 5867. }-No. of Group, for 441, read 441*. Area of Faculse, for 1 18, read lot. Area of Faculoe, insert 2620. Area of Faculse, insert 445?^. Latitude, for +23'!, read +23*o. Total Area of Whole Spots, for 546, read 775. No. of Group, for 465, read 465*. Mean Solar Time, for May 4, read May 4*. Mean Solar Time, for May 8, read May 8*. Area of Faculse, for 227, read 277. Mean Solar Time, for May 10, read May 10*. Total Area of Umbra;, for 77, read 87. Area of Faculse, for 413, read 423. Longitude, for 2o7*o, read2o6*8. Area of Faculse, insert 497^. Area of Faculae, for 1213, read 12I3/. Diminish all longitudes on May 21 by i'o. Total Area of Umbrae, for 66, read 68. Total Area of Faculse, /or 560, read 1316. Total Area of Umbrae, for 164, read 128. Total Area of Whole Spots, for 725, read 718. Total Area of Faculse, for 3252, read 4314. Area of Whole Spot, for 70, read 75. Total Area of Whole Spots, for 1396, read 1401. Position Angle, insert 2oi*8. Position Angle, insert I2o*o. Position Angle, for 65 - j, read 65*'o. Total Area of Faculse, for 4929, read 5129. Total Area of Umbras, for 93, read 95. Position Angle, insert 74 P 8. Position Angle, insert 140 '7. Area of Faculse, insert 849^. Area of Faculse, for 255, read 270. Position Angle, for 727, read 72'4. Area of Faculse, insert n^sp. Area of Faculse, insert S7 2 f- Area of Faeulfe, insert i8$p. Area of Faculse, for 316, read 326. Area of Faculse, insert 260. Position Angle, for 53'o, read 54 'o. Area of Faeulfe, insert 5850. ERRATA. XXI PAOB. COL. LIN 67 1 4< 68 I 16 7 6, 1 16 I it 3' 51 7' 1 18 1 S 7 X 3 7} I 19-19 75 Position Angle,/or 6o*'i, read oo'o. Area of Fcul, insert 74*'i. Are* of FaculB, insert ni'j. Ana of Umbra, for 14, rnui 11. Total Area of Whole Spots, /94'3 + 15-0 lit 19*309 '3 77 8 4 '947 + 57 3 ''4 10-491 8 7-! 6 5* '957 + 15-6 11*196 16 o '5 196*0 +15-1 h57'6 Means ... ... ... 1 45 '94 '93 + '5'3 ... Group 859.* A small spot. Oct 11*635 a *4 4 43 193-8 +9'7 +74-4 Means ... ... ... 4 43 1938 +97 TOTAL PBOJECTKD AEKAH or SUN SPOTS AND FACCLJI FOR KACH DAT IN THE YPAKB, 1874-1885. PAOB. DATS. 190 1874 June 15. Area of Whole Spots, /or 361, read 178. 195 1877 March 30. For o o o, read No photograph. 301 1880 June 18. Area of Faeulae, for 1033, read 1580. 311 1885 August 30. Area of Faoulse,/OT 185, read 993. 1,'OVAI, OKSKKVATOKY, GKKKMYIOH. MEASURES OF POSITIONS AND AREAS OF S U X SPOTS AND F A C U L ox P'H OTOGRAPHS TAKKN AT GREENWICH, AT HARVARD, AND AT MELBOURNE, WITH THE DEDUCED HKMOGRAPHIC LONGITUDES AND LATITUDES. 1874--1877. PHOTO- HiLiooRAi'ii 10 RESII.T-. i-<7i I-T: MEASURES OF POSITIONS AXD AREAS OF SUN SPOTS AND FACUL^E ON PHOTOGRAPHS MEASURES of POSITIONS and AREAS of SUN SPOTS and FACULA on PHOTOGRAPHS taken at the KOYAL OBSERVATORY, GREENWICH, at HARVARD COLLEGE OBSERVATORY, CAMBRIDGE, U.S.A ., and at the GOVERNMENT OBSERVATORY, MELBOURNE, in the Years 1874 to 1877. NOTE. The Greenwich Civil Time tit which the Photograph was taken is expressed by the Day of the Year and decimals of a day, reckoning from Midnight, January i d oh. For convenience of reference, the Month and Day of the Month (Civil Reckoning) are added, The letter H. signifies that the photograph was taken at Harvard ; the letters Me. that the photograph was taken at Melbourne ; the time given is Greenwich Civil Time. The position-aii"les are reckoned from the North Pole of the Sun's Axis in the direction N., E., S., W., N. The Groups of Spots are numbered in the order of their appearance. When there is no number in the third column, it is to be understood that there is a Facula unaccom- panied by a Spot. The positions of Faenlie relative to the Spot 4 with which they are associated are indicated by the letters n, s, p,f, c, denoting respectively north, south, preceding, following, concentric. The longitude and latitude of the centre of the disk are given in brackets. The Areas of Spots and Faculse are expressed in milliouths of the Sun's visible Hemisphere. 2 | ji "d HELIOORAPHIC SPOTS. FACUL.E. 1 H G f. ~G jj HEUOGKAPHIC SPOTS. FACUL.I-:. t. m h B 1) *- j 1 d 3 9 <2-E t-l t-4 *S .0 d- *J 3 Z E & c o c Greenwich "a 13 . *t*s '^^ o Greenwich a a n . ft ~c 's E H-i n * V) aj ff. O o 3 fc-g i O ntre (320-2)(- 4 -i) (40) (22 9 ) (o) 87 0-859 95-8 1556 6-6 39 1075 May 8 Centre ( 2I 4'7)( 3' 2 ) ('79) (1827) (o) 120 539 M, M 83 0-249 I30-0 296-2 I3-0 32 191 84 0-455 295-6 331-8 + 77 34 85 0-893 9 2-I 244-4 -- 37 4 2 128-497 JB, B 85 0-721 265-9 248-3 -- 5-1 35 233 May i Centre (37'5)( 4") (32) (267) (o) 86 0-537 70-9 171-6 -f 7-4 64 378 87 0-735 96-7 155-1 - 7-0 130 852 88 0-787 299-3 249-1 + 20-5 68 121-499 JB, B 83 0-167 I87-3 296-0 13-3 45 178 May 9 Centre (202-3) (-3-') (229) (1530 (o) 84 O-622 288-1 331-3 + 8-0 29 85 0-777 91-9 243-9 - 3'9 1 1 132 May 2 Centre (2 9 4-8)(- 3 - 9 ) (56) (339) (o) 130-526 JB, B 85 0-958 265-4 248-7 5-2 o IOO s 1 149"/ 86 0-180 I5-4 172-7 + 7-1 4 196 123-571 JB, B 83 0-500 248-6 295-9 -I3-7 25 164 87 0-330 104-0 156-7 - 7-2 52 427 May 4 85 Centre 0-330 93-8 248-2 (267-4) - 47 (-3-6) 28 (53) 3'4 (478) (o) May 1 1 88 Centre o-953 294-1 244-8 -j-21'9 o 44 (i 75 -4)(-2- 9 ) (56) (767) ('49) Group 82, Apri 17-18. Single spot, which breaks up into two on April 18. Group 83, April 27-May 7. Single spot. Group 84, April 3o-May 2. Small scattered group. Group 85, May -ii. A large spot, with several small ones near it. Group 86, May 6-n. Two large spots. Group 87, May 7-18. A large group of many spots. Group 88, May 9-11. A group of three small spots, widely separated. TAKKN AT I '< KKKNWI. II . AT llAKVARU, AND AT MELBOURNE. IN II IK 1*74 To Mi-asures nf IVsitums uixl An-as of Sun Spots ami Karuhe on rimto^nijihs < M-lllr Bran. FXCITLA Jll: I 1 '.i.\ ii 8rOT. FACULA fc J & a 5 JS II && J* 1 .wi.-h -s ,. Greenwi'-h < <-9 Stf-O 3 oA ~ * 3 SI .s BS-' 11 c 3-- Tim* f . = - -' I < - V i line. ^ K" I" * ^ o 1 = 1 2 w .5 - I* t | _ 11" ?1 - 7'3 33 ' " 174-458 JB, B 94 0-888 280-4 16-4 4-10-2 34 481 June i Olltiv (1S8-2H-0-4) (65) (3' 3) (o) 95 0-975 68-9 237-3 +21-1 o 62 June 24 Centre (3'4'')(+*'3) (34) (543) (o) '5- Jll, II 90 O-6OO 289-3 279-4 +11-2 34 "6 9' 0-760 98-4 195-4 6-6 38 166 175-512 JB,M 94 0975 279-8 17-2 -I- 10-1 70 428 36387 0-945 82-7 173-8 + 6-8 818 95 0-929 66-9 232-9 + 22-3 o 113 Jui Om .: (M4-3X-0-31 (39*) (818) June 25 96 0459 124-9 Centre 2-- 4 -12-9 (300-1) ( + 2-4) o 47 (70) (?88) (3638.0 1 54-466 JB, a 90 0-878 282-5 *79'3 +10-9 38 216 I77-574 M,* 95 0766 66-8 224-8 + I9'3 4* 373 9' 0-413 107-2 195-4 - 7-0 27 U2 96 0-277 '337 261-08-4 o 17 June 4 .ire (2i8-7)( o-f (65) (358) (o) Jun.. :- (272-8) (+*7) (4*) (390) (o) ;;. s.i. M ,y 16-22. Two or three small spots. Group 89*, Mav 20-26. Two large spots of irregular shape. Group 90, M.iy 26-June ;. One lar<;.. *j>ot of very irregular shape. Group 91, June 1-5. One well-defined sjKjt of regular >i Gioup 92. June 11-15. Two faint spots. Group 91', June 15-19. Two spots. Group 93. June 13. One tmall q 3ronp 94, June 15-25. One i|t, whi.-li yre.it ly increases in size on June 19, and breaks up into several fraiiti r.r..up 95. .hiii- : 4 ,U V of fiye , ts It ,. _. , f orm ,! in iie .luring it* room. Group 96, June 25-July 4. Sin R le s|K)t. On June 29 it has expanded "into a lonz atnuKlinc group of small mts. The "><"!' uti . > form an< size '" of its (-... MEASURES OF POSITIONS AND AREAS OF SUN SPOTS AND FACUI^E ON PHOTOGRAPHS Measures of Positions and Areas of Sun Spots and Faculse on Photographs continued. & 1 HKLIOGKAI'IIIC Sl'OTS. FACUUE. b 2 f ifi = HEMOGKAPHK; SPOTS FACUL^E. 1 & tn 1 ! m :_ L. i -~ p.. t- - - '~ s i 2.S. && 3 "Z> -.2 S.S. f Greenwich 1 tH -""a sa-e J Z! o Greenwich 5 ^ rf <;-= K-3 ;5 Civil C3 0; OJ S-2- js'S Civil <3| Si 2 -2- ol ^9 Time. g. O |i jf P 2 ^U 1 Time. o ! f a| ^s IQ 2 E **- x fS . 02* of i- o t M **~ '" T3 CO 0^ '^ ,0 !l 05 O O ^09 a C 3 III !i| g SQ a 1 J i O "f. ;^"x B % 1 2 5" g SQ a '-' ^ f ^ o5 S C, -* S & 5 & A 3 5 4 3 S fc 5 j 3 < < 1874. O o 1874. o 179-416 JB, B 95 0-470 58-8 223-7 + 16-7 44 3'9 188-513 JB, B 0-955 275-0 200-7 + 5'9 201 96 0-327 226*6 262-3 IO'I 44 419 0-888 256-5 189-0 IO - 2 632 June 29 Centre (248-4) (+2-9) (88) (738) (o) 98 0-432 287-2 152-8 -t-io-8 148 1301 99 0-232 229-4 138-1 - 4-8 55 329 100 0-502 117-9 10 1 -4 lO'I 103 5H 180-409 JB, B 95 ! 0-303 96 0-502 36-1 243-2 224-6 262-2 + 17-0 -10-4 27 IOO 355 733 3'4 July 8 101 0-141 277-6 Centre 136-0 (I28-0) + 4'9 ( + 3-9) (306) (2163) (833) 97 0-766 104-1 186-7 - 87 o 22 June 30 Centre (235'3) ( + 3o) (127) (1110) (3H) 189-535 M, M 0-966 257-7 188-2 -10-8 271 98 0-637 283-2 153-5 -r-li'4 179 1283 182-464 JB, B 0-919 282-5 274-8 -r-iz-7 442 99 0-447 249-7 139-3 - 5'3 25 213 95 o-394 308-9 226-7 +17-3 31 186 100 0-332 138-6 101-7 10-5 83 427 96 0-826 255-7 262-2 9-9 66 609 22330 101 o-379 272-1 I36-7 + 4-5 o 10 97 0-387 122-4 188-9 !- 8-8 i 43 0-921 76-0 47'4 +14'! 298 98 0-864 77'5 148-5 +12-4 '4 66onf July 9 Centre (ii4'5)( + 4-o) (287) ('933) (569) 99 0-939 96-9 138-9 - 5-4 18 120 4246 July 2 Centre (208-1) (+ 3' 2 ) (116) (972) (3759) 190-501 JB, B 98 0-779 281-5 1527. + 11-5 130 858 1 99 0-627 256-5 139-3 5-2 20 H3 183-529 M, M 95 0-582 295-5 227-2 +17-2 o 4 2 IOO 0-248 180-1 101-7 10-2 47 424 96 0-949 258-7 264-5 " 9'6 7 l6 7 12686 102 0-807 74'9 48-3 + 1 4' 5 29 97 0-214 163-9 190-6 8-5 o 79 July i o Centre (101-7) (+4-1)1(197) (1424) () 98 0-703 74'9 150-0 +12-9 22 223 99 0-821 Q7'3 139-5 4/1 w 228 July 3 Centre (194-0) (+3-3) (62) (739) (1268) 193-549 JB, B 980 0-975 275-3 '38-6 + 6-1 118 99 8 / 99 0-980 263-5 '39' 1 - 5'5 o 72 *97/ 184-403 JB, B 95 0-722 291-2 227-1 + I7-6 20 97 IOO 0-685 248-7 101-8 I I'O 97 479 96 0-979 260-2 259-7 - 8-9 o 59 5'3 C 102 0-303 58-0 46-3 + 13-4 >4 IOO 97 ' 0-265 216-4 191-5 8-9 o 1 1 July 1 3 Centre i (61-4) ( + 4-4) (in) (769) (1295) 98 0-529 73-8 151-4 + 11-4 77 620 99 0-700 IO2'O 139-1 - 5-8 23 405 194-512 JB, B IOO 0-828 253-6 102-4 10-9 54 236 100 O-ggO 101-8 1017 in O 532 IO2 0-174 14-4 46-1 + 14-1 o 47 July 4 Centre (182-4) (+3-4) (120) (1724) (5'3) July 1 4 I0 3 Centre o-975 71-8 331-1 (48-6) + 18-7 ( + 4-4) o (54) 87 (37) (o) 186-546 JB, B 95 0- 9 56 286-6 227-0 + 16-9 63 2456?^ 98 0-145 20 -o 151-2 + 11-4 '74 1016 195-443 JB, B 100 0-923 257-3 I02-I - 9'9 I 5 I 445 Il62/ 99 0-307 118-7 138-4 - 4'9 88 441 102 0-231 315-2 45'9 + 13-8 38 141 IOO O-Slj 105-2 1OI-2 IO-I 109 620 2I30/' 103 0-909 72-9 331-1 + 17-4 55 141 5637 101 "435 82-2 128-4 + 6-6 H 85 104 0-452 68-7 10-8 + 13-5 O 53 July 6 Centre (I54-') (+3'6) (385) (2225) (4586) July 15 Centre (36-3) (+4-5)(244) (780) (1725) 187-454 JB, B 0-956 290-8 214-9 + 20-9 470 196-524 JB, B IOO 0-991 258-6 102-8 10-5 o 537 '749/ 98 0'202 , 309-3 151-2 4-n-o 154 1228 102 0-527 286-8 53-0 + 12-7 28 185 99 0-165 155' 1 138-1 - 4-8 46 307 103 0-786 70-1 33'-i + 18-5 36 '74 1 3 5 2 / IOO o'6S6 IIQ-I 101-2 10-8 83 529 13467 104* 0-599 85-8 345' 2 + 6-2 o 77 101 0-250 77-7 127-9 + 6-7 o Z 3 104 0-269 50-1 9'8 + 14-4, o 17 July 7 Centre (I42-I) (+37) (*8j) (2087) (1816) July 1 6 Centre (22-0) (+4-6) (64) (99) (3ioi) Group 97, June 3O-July 4. One small faint spot. It breaks np into a cluster of very small spots on July 2. Group 98, July 2-13. Two spots. They are small on July 2, but much larger ou the following days, and form two streams. Only one spot of the Group, y&a, is still on the c isc on July 13. Group 99. July 2-13. At first a single well-detintd spot. On July 3 and 4 a row of small spots forms immediately behind it. Group 100, July 4-16. One large regular spot. Group 101, July 6-9. Two spots, the first being very small. They greatly decrease in size on July 7, and on July 8 one disappears altogether. The spots 98 to 101 seem to suffer continual changes. Group 102, July 10-18. On July 10 one small spot. On July 13 it has become two of much larger size. These two spots become more and more widely separated, increase in size, and break up into several portions as the group crosses the Sun. Group 103, July 14-24. One large regular spot. Group 104, July 15-16. At first one faint spot, which breaks up into two or three on July 16. TAKEN Al (iKKKNWlrll. AT H.VIiVAKIi, AND AT MKI.BOPKNK, IS THK YK v \|, MUM o ; of Sim Sputs ami Fuuuhe on I'lmlo^niplis continued. : Mli- T. r'Ai-l'UC. J I i llu.i m ioh e I : ii oi 0. Greenwich 1 I V ii 31 oi o ji '- Time. t |1 -. 11 Time. f |1 1 "l t 1 "s"" _ 1 w v. o5 O j g S . 1 J CO o ^ 7oo) (4670) 210-452 JB, B o 896 291-7 160*9 4-n-o 337 Q'935 *59'5 165-1 - 7-8 673 111-431 JB, B IO7 0-864 l8o-l ni-8 4-n'o 40 '77 64 3 nf 105 0-315 177-0 216-1 4- 7-7 55 176 108 0-930 145-0 116-4 10-4 18 188 I 1 29/ io6'/ 0-553 79-6 164-3 4-10-5 3 11- ) 109 0-814 150-8 1041 -11-5 14 45 337" io6/< 0-688 78-8 154-4 +11-9 64 347 iOO/ 110 0-8ll 92-0 357-6 4- i-i 103 502 io6<- 0-751 SS'i 149-1 + ; : 18 170 ) III 0-987 1 10-1 335-018-6 80 900 775 30 Ontr.- ('97'3)(+v8)(i5o) (910) (1110) A-i,'. 10 :re ( 5 i-6)(+6- 5 ) (1811) (4657) ; 104*, July 16-15. A v.-ry faint <-W cluster of small spots. The group lias partly passed round lh- limb on July 15. ,-iilar .-]i 1 Ironp in, August 10 11 Three spots, one rcry large. MEASURES OF POSITIONS AND AREAS OF SUN SPOTS AND FACULA: ON PHOTOGRAPHS Measures of Positions and Areas of Sun Spots and Faculae on Photographs continued. h i "c HEMOGRAPHIC SPOTS. FUJUL.E. I JD HELIOGRAPHIC SPOTS. FACULS. h B A FH ^ A ! a :f \ :I !! .2 o id I 3 gSl" 2 S 3 * 3 5 0-607 233-1 231-2 -15-2 46 230 1 1 1 0-471 208-2 332-9 -I 7 -8 127 685 117 0-738 82-4 '53'4 + 'o"4 i7 57 Aug. 17 Centre (3'9'5) (+6-8) (199) (1144) (o) 0-941 112-3 135-8 -18-5 672 0-979 91-8 123-3 - 0-3 184 Aug. 26 ('entre (201-2) (+7-0 (63) (287) (2272) 230-543 JB, B IIO 0-920 268-2 358-8 + i-i 8 39' 1 1 1 0742 237-7 333-3 -18-2 83 49 1 238-488 JB, B 0-965 256-5 259-9 1 I'O 1123 i 14 0-621 I2I-O 259-2 -12-8 o 17 0-940 290-3 258-2 + 21-5 232 115 0-903 I I I- 3 231-4 -15-8 45 268 1 15 0-757 242-9 231-2 -15-0 44 217 116 0-958 85-8 219-1 + 6-0 o 78 H7 0-547 80-2 154-0 + 11-3 24 Aug. 19 Centre (292-2) (+6-9) (136) (1245) () 0-893 117-7 129-6 20-9 1206 0-932 87-8 120-5 + 47 418 Aug. 27 Centre (187-2) (+7-D (44) (241) ( 2 979) 231-563 JB, B I 10 0-993 269-7 1-6 + 0-6 o 347 8 43w/ ii i 0-847 243-9 331-4 -17-8 86 694 I75 9 c 239-434 JB, B "5 0-868 248-5 231-0 -14-6 28 218 5 i oc 114 0-415 I39-0 262-6 -11-5 31 191 117 0-362 77-4 1537 + II-2 3 29 115 0794 II5-0 230-7 -14-9 47 328 355 C 0-920 i'3'5 I1I-I -18-6 1588 116 0-859 86-5 219-2 + 6-6 o 27 80378^- 0-881 8ro I 12-6 + II-8 419 AUK. 20 Centre (2787) ( + 7-o) (-64) (1587) (376o) Aug. 28 Centre - (1747) ( + 7-2) (3 1 ) (247) (2517) Group 12, August 15. A few very small spots in a close cluster. Group 14, August 19-25. A scattered group of small spots. Group 15, August 19-29. Two spots close together. Group 16, August 19-22. One small spot. Group 17, Augxist 24-31. One small spot. . AT GREENWICH, AT HAI:V\I:I.. AND AT MELBOIUNK, IN TMK VKABS 1874 TO Mi-iisun-s nf I'n.sitiiiiis ami Areas of Sun Spots .uul Fuculie oil Photographs e/ * | J BLA Jl { i ~ 4> : 11 - 1 a 5 *& wich 1 flu - 11 ft. Greenwich Ciril 1 li A Si 11 i* Time. f H El 1(5 Time. ll OB "i Pi ij O o "a g 4 CO u ,O O e e ^ J fe 1 ._ ._ ._ I 111 1^ I 1 B Jr* 3 3 - / .20 r ! I I 1 * < < 1874. O o 1874. o o O 240-515 JB, B 0-868 177-0 22fl + 97 2 93 2 54'434 JB, B 0-871 190-5 37'S + *i'4 668 1 1 5 0-963 251-8 23I-6 ~'5'3 3 2 168 363<- 119* 0-691 273-0 20-5 + 7'3 17 129 117 0-140 55-9 1536 + 11-6 9 2 9 121 0936 252-1 42-9 -13-9 33 388 12400 1 18 c 147-6 I5I-5 - 6 '9 4 ll 0-875 104-8 177-8 - 9'3 564 0-903 115-3 100-8 -19-2 1008 Sept. 12 Centre (336-6) (+7' (60) (5-7) 0-887 85-8 97 -6 4- 7-0 98 29 C.Mitrt- (160-4) ( + 7') (45) (!7) (1762) 256-464 JB, B 119* 0-963 275-2 24-6 + 7 - o *9 "4 17671? f 0-599 22 3'3 335-5 -19-2 2405 242-483 ii- '34O 285-0 53'9 + 1 1 "9 o 8 0-941 80-1 238*9 + 11-8 118 0-406 2312 152-8 - 7-8 o 65 0-736 90-6 262-5 + 4'5 534 3' Centre ('34-4* ( + 7'*) () (73) (o) 0783 117-8 263-8 -16-4 303 Sept. 14 Centre (309-8) ( + 7') (*9) ('4) (5 '5) 243-456 .IH, I, 118 0-585 4S7 154-0 - 7-8 9 93 *57'4<57 JB, B 0-933 277-7 5'9 + 9-7 987 0-954 108-8 52-2 -'5'5 831 in 0-934 107-3 230-4 -13-3 o 48 I Centra (121-6) (+7-*) (9) (93) (83') 0-888 80-8 233-3 .+ ii ' 5 5'7 Sept. 15 Centre (296-5) (+7'*) (o) (48) (54) 244-418 JB, B 0-895 276-8 172-9 + 9'4 685 ill 0-736 *53'3 "539 '4 i*7 261-450 JB, B 0-883 288-8 306-5 + '9'9 107 0-907 1 1 i i 47-6 -15-7 "74 in 0-417 142-4 229-6 -11-9 '4 0-944 7V8 37' + 16-8 587 0896 85-3 180-0 + 7'4 49 . 2 Centre (108-81 (47-2) (-4) (H7) (1446) Sept. 19 Centre ( 2 44"o) (+7-0 (o) (4) (597) 146-570 JB, B 0-942 2 77'3 151-4 + 9'3 589 0-87$ 241-7 135-8 2O'6 722 264-452 JB, B 0-897 250-5 264-9 ~ '4' 1 >5 2 118 0-964 259-3 153-2 - 8-3 45 358 8051,- in 0-535 231-9 229-8 12-9 o 13 119 0979 88-9 2 '4 + 1-6 69 1546 123 0-373 48-2 187-1 +21-O l6 65 0-934 725 10-2 + 18-9 298 124 0739 I0 9' 2 159-6 - 9-1 76 381 33W/ . 4 Centre (80-4) (+7'3) (45) (4*7) (2568) 0-881 75'S 142-0 + 16-2 202 Sept. 22 Centre (204-4) (4- 7-0) (92) (460) (684) *47-403 ... i. 0-858 241-5 II2 ' 6 -19-9 1326 118 0-992 262-1 ' 151-0 - 6-9 56 3>9 266-414 JB, B 0-915 286-3 *45'5 +'77 2 4 2 "9 0-922 92-0 1-5 + 1-1 33 1922^ 0-911 245-3 239-5 -'9' 2 210 8 pt. 5 Centre (6 9 -4) ( + 7-3) (56) (35*) (3*48) 123 0-295 327-9 188-1 4-21-2 1 1 5' 124 0-417 130-5 159-8 - 9-1 71 4'4 0-914 116-9 1 I' -9 21-2 370 251-609 JB, B 1 19 0-206 1175 3-4 + 17 o 34 Centre ('78'5)(+6'9) (82) (465) (822) 120 0-892 270-1 77-0 + 3'4 o 29 27 in/ Sept. 24 121 0-600 233-3 43'5 -'47 7 5* 8 :>t. 9 Centre (3-9) (+7-3) (7) ("5) ( 2 7') 267-425 JB, B 0-927 290-7 2339 +21 7 402 0-902 2 44'3 224-6 19-6 I 9 2 123 0-451 305-2 188-3 +21-3 1 1 43 2 5 2 '439 JB, B 110 o-945 272-9 74'3 + 5'' 75 38o/ '*4 0-284 161-4 159-9 - 87 76 4'5 I Zl 0-712 242-4 43'3 -'37 8 85 0-980 87-8 86-7 + 3-6 o 52 345 r Sept. 10 Centre ( + 7- 2 > (8) (160) (380) Sept. 25 i lentrc (i6 5 -D( + 6- 9 ) (87) (510) ^939) Group 1 18, August 29-September 5. A scattered group of faint spots. Group 119, Si-pi'-iiiln-r 4 y. Onv -pot. Group 119', September 12 14. A lung row of small spot*. Group 120, September 9-10. One small spot. Group 121, September 9-12. A group of small spots forming a circle. Group 122, September 15-22. One small regular spot. Group 123, Septemlier 22-28. A small spot and a very small marking at a little distance. -inber 2i-0ctol.er i. One large regular spot. Group 125, SeptenOwr 15-30. One small regular MEASURES OF POSITIONS AND AREAS OF SUN SPOTS AND FACUL.E ox PHOTOGRAPHS Measures of Positions and Areas of Sun Spots and Faculse on Photographs continued. _ ^ '=: z HELIUGUAl'HIC SPOTS. FACUL*. ' M C h 3? JS A JIiaiOGRAPHIC SPOTS. FACTL.U. i g o ' z& o *j 3 a II l-l t-, Z Greenwich & C3 . vj * H-jj E Q Greenwich 5 <* -tf i Civil cS J cs 2 il Civil 5 5 in j> 9r J. "- 5 Time. [? s'i W S^ B If Time. a a &+* > < ^ If i I O V *fl o a . p t- i "!!. aZ p-S To | "1$ C* -^ I js o J 'So 9 Z 'f -; ~ ^J s V & "o g t appears on the second photograph on November iz. The group entirely changes it* cbarct-r on the following days, ami orti"ii "f the group has disap|>raief the group, not it.< |>.itioti, was measured n Novi-mber 17. n'ner 23 several very small markings appear close behind it. These t ,/ .lis,ii.|n-ars on Decemlier 14. ami PlOTO-HnjOORAPHIC KKSI-I.TS. 1--71 l-^TV. 10 MEASURES OF POSITIONS AND AREAS OF SUN SPOTS AND FACUL^E ON PHOTOGRAPHS Measures of Positions and Areas of Sun Spots and Faculae on Photographs continued. 1 m g HELIOORAPHIC SPOTS. FACUL& ,3 = -2 HELIOGHAPHIC SPOTS. FACUIX. b Si tn S3 m 5 d S t- i- u ;- o o P* 3 n - tH V. t-. .0 .0 2, Greenwich TJ 1. & riH3 H-P c O Greenwich o I it] tJ 5 3 '. t iJ C rv fl Civil o.H OJ e~ S3. ' ja'i Civil ^ .^ _a> gj o~i ^ Time. P. B O G |1 1 e>i ^1 O 1*> Time. I o ^ to 5| ^1 "Ti >* SQ e si a . 1 d o ^ g 10 -2 t "s's c . 3 d x. _ w j><2 B i o 22 3 t: o "o ~> p. '5b -C C3 H o. "to - ^ rt aS " iS c O "S -'3 + 5-8 o 9 1406 0-703 : 84-1 184-9 + 37 22 95 140^ 0-782 83-2 178-2 + 4'9 22 80 Dec. 1 1 Centre (229-2) (--7) (59) (286) (811) 350-583 JB, B 1 40ft 0-716 28I-6 '93'5 + 7' 2 4 69 I4oc 0-625 2 77'3 186-9 + 3-4 10 57 140^ 0-562 285-0 1817 5 34S74 2 H, BP 1400 0-381 68-4 191-6 + 7'4 22 249 1406 0-6 1 8 288-5 185-1 + 10-1 40 I40c 0-481 78-8 184-3 + 47 21 137 '4/ 0-502 292-7 176-6 + 9'9 26 H. 140^ 0-596 79-9 176-5 + 5-4 9 76 Dec. 1 7 Centre (H87) (-1-5)1 ('4) (-97) (o) 0-957 55'3 I43-4 + 3 2 7 5 11 Dec. 1 2 Centre (212-4) (-07) (52) (462) 351-513 JB, B I4oa 0-852 278-8 194-1 + 6-7 o 5' I4oc 0-776 2 75'4 186-9 + 3' 2 o 2 3 347-49 8 JB, B I J.Of/. 0-158 3367 192-9 + 7-2 I 1 63 1406 0-768 284-4 185-3 + 9-9 o 3' 1 iQC 0-106 29-9 186-3 + 4' 2 5 90 i^of 0-672 286-2 177-1 + 9-6 o 21 140^ 0-236 63-0 177-2 + 5-i O Dec. 1 8 Centre (i 3 6- 5 )(-i-6) (o) (126) () Group 139, December n. A group of very small spots. TAKKN AT ( iliKKNWlCII, AT llAKVAH!', AND AT MKLUOUKNK. IN TIIK YEARS 1874 TO 1877. 11 Measures of Positions ami Areas of Suu Spots and Facuke on Photographs continued. : "i 'lill.tl-mr SMTH. FAct'L.r, & I Jill I.|I:T.M Hi' SPOT*. HA.TL* 1 S . 1 A ja e | IJ 11 e. 1 ' <-h 1 rj tfl 31 5 OrwnwH, 1 .8- n 11 <5 Timr. | <- H ji I 81 51 pi If Time. A ^.2 I -= O i If I y. ij ' Axis. 1 Jlf Jl s O !'. . of 8un'< Position Axis. A f Latitude. )ii ;i 3 1875. o O '75- o l-J7 M, M 141 0-567 250-6 331-9 -13-6 3* 115 30-520 JB, B 0-975 * 8 5'7 3520 + '3-8 4*7 2 Centre (1987) (-3-4) (3*) (5) (o) Jan. 3 1 Centre 0-869 7*'* 219-4 (*77'o) + 12-2 (-6-1) (o) (o) IO12 ('439) V550 JB, B '4' 0-953 *S 6 7 33''3 -13-8 3' 140 1670*;' 3'773 H, EP 0-928 2517 329-2 -19-3 +37 0-930 82-0 191-3 + 6-0 +37 '44 0-917 67-2 197-9 + 18-0 150 2656 Jan. ; Centre (*58-9) (-37) (3') (140) (*io7) . Feb. i Centre 0-915 80-5 '95-5 (260-5) + 6-1 (-6-2) (o) ('5) 502 (1204) 5-486 M,M 0-993 *49'3 330-5 -*'' 39' 0945 *97'0 313-5 + *3"9 34-485 JB, B '44 '593 45-5 198-3 4-18-8 17 9' 0-906 81-3 182-6 + 6-2 416 0-859 253-2 284-3 -'77 172 Jan. 6 Centre (246-6) (-3-8) (o) (o) (1042) Feb. 4 Centre (224-8) (-6-4) ('7) (91) ('7*) i, : 4 : JB, B 0-945 278-5 184-2 + 6-4 944 35'657 H, Fi- 0-887 190-7 268-3 4- '5'o 435 0-821 257-2 169-4 -'3'3 697 1440 0-453 23-0 198-6 + 18-3 12 100 142 0-547 989 81-2 - 8-9 6 4* 11. 1446 0-486 25-7 196-4 -1 '97 O 5 Jan. 16 ('.litre ("4'3) (-4-9) (6) (4*) (1641) Feb. 5 I 44 c 0-505 Centre *77 '94'9 (209-3) 4-20-3 (- 6 >) o 22 (435) 21 JB, B 0-909 258-0 1010 -13-2 '39 142* 0-629 * 8 7-o 72-4 4- 6-2 "9 559 409?^ 36-774 ll, BP 0-931 289-1 259-9 4-15-1 478 143 0-289 355-6 36-6 4-11-2 '7 79 '44 0-425 35'3 198-8 4- 18-2 21 69 0-879 1*7*' 333"8 -18-2 '34' H. '44'' 0-451 354-5 197-1 4-20-1 O IO Jan. 22 Centre (35-3) (-5-4) ('36) (638) (1889) Feb. 6 '44 Centre 0-460 359'9 '94'5 ('94'5) 4-20-8 (-6-5) o (21) 16 (95) (478) *4'554 JB, B 142* 0-970 277-2 70-5 + 5'5 57 826c '43 0707 291-8 37-3 4- iro o 39 37-215 A,H 0-944 288-5 256-6 + 15-0 339 Jan. 25 Centre (355-5) (-57) (o) (96) (8*6) '44 0-461 3487 194-3 4-20-7 O *4 Me. "44" 0-454 339H 198-5 4-18-7 20 97 0*925 171-5 162-3 -72-2 265 *5734 U, KP 0-821 300-6 28 9 4-210 78 Feb. 7 Centre 7 J (88-8) (-6-5) (20) (121) (604) 11. 43* 0-869 293-9 361 + '7'5 o *7 Jan. 26 Centre (339-9) (-57) (o) (*'3) 38-699 H, KP '44 0-6 1 8 311-2 198-4 4-18-2 8 59 44' H. 26-625 Hi, B 0-925 286-0 33-6 4-12-4 486 Feb. 8 Centre (169-2) (-6-6) (8) (59) (44') 0-916 72-3 264-5 + 137 S4 I HI! 27 Centre (328-2) (-5-8) (o) (o) (1010) 39-229 A, 11 1440 0-688 306-4 197-8 +18-7 9 5' 144^ 0-641 311-8 192-6 -4-19-6 o 4 19 JB, B o 892 294-3 34<^'5 4-18-5 **5 144* 0-978 82-5 84-3 + 5'9 *3 90 Q 0-880 251-2 351-4 -19-3 651 0-941 100-4 91-0 12-6 220 .l:in. 30 Centre 0-919 84-0 223-7 (897) ->! 3'' -6-0) (0) (o) 403 ( I2 79) Feb. 9 0-935 Centre 7'4 96-0 +14-8 M62 2)(-6-6) (3*) ('45) 702 ('464) Group 141, 1875. January 2-5. Single spot. Group 141, Jnnuiry 16. A group of to or three very small spots. Group 141*, January 11-15. Tw " lar K "P 01 * clos together, and a few small marking round them. Group 143. January 11-15. A *" 1 * 11 'P '- surronnde.i by a few very small and scattered markings. It incomes slightly more condens Group 143*, January 16. A small s[K)t. Group 144. February 1-9 A iiuiuUT of spots in an irregular stream. Group 144*, February 9-11. A regular spot. 12 MEASURES OF POSITIONS AND AREAS OF SUN SPOTS AND FACUL/E ON PHOTOGRAPHS Measures of Positions and Areas of Sun Spots and Faculse on Photographs continued. 1 '& 'z HELIOGRAPIIIC SPOTS. FACUL.K. Li S 1 " HELIOdliAI'HIO SPOTS. FACULiK. 1) . 03 OJ EC 3 a _ t- '- o .0 t~ fc. E. -g 5 .2 g I* t-i ^ - 0, Greenwich H- 1 1 1 . CJ en 1 -- G HT3 i o Greenwich 33 tn 3 J g c Civil oj a) gj. ol ~^. Civil rt E-i a**- Time. & g il I a 5(5 Time. 8 if tp 5 "-^ f^ 'f~3 i| easurers CJ 3& **' M II 32 w O .2 .2 rf 1 1 02 CM ill "l! gl easurers. O -I o aJ To s o 5 ill g|| >i S Q (S J 3 < < 5 3 3 d, J ~ < < ^ I8 75 . o o 1875. O O o 40-687 B, BP 0-858 292-9 198-1 + '57 682 55-53I JB, B '45 -475 334-5 3 2 + 18-3 131 696 H. 144* 0-869 79-8 84-1 + 5'5 4 2850 i 4 6 0-232 249-7 320-3 11-6 53 215 Feb. 10 Centre ('43-0 (-67) (o) (40) (967) '47 0-677 74-6 266-9 + 4-9 22 108 3 5 ffif Feb. 2 5 Centre (3 7-6) (-7 2 ) (206) (I01 9 ) (355) 41-205 A, H 0-882 2 94'4 '93'5 + 17-8 734 Me. 44* 0798 78-5 ' 84-7 + 5-0 1 2 39 94' 56-558 '45 ) j '45 7'4 Feb. ii Centre (136-2) (-6'7i (' 2 ) (39) ('675) 146 '47 - Ph otograp h miss >ng- \ 16 o '44 2 7 Feb. 26 Centre ) ( (161) (885) (o) 44019 A, H '44t 0-336 358-2 99-8 + 12-7 O 10 Me. 0-878 72-5 40-6 + 117 343 Feb. 14 Centre ' (99' 2 ) (-6-9) (o) (10) (343) 57-030 A, H 145 0-652 308-5 320-1 4-17-8 108 614 146 0-549 2 6o'i 321-1 -11-4 18 "9 147* 0-442 257-2 313-8 I2'I 9 36 47-075 A,H 0-957 io8't 344*6 -'9'3 225 Me. 147 0-357 57-2 270-4 + 4'3 '7 80 Me. i 47 '479 64-6 262-2 + 5-4 o 20 Feb. 17 (58'9)(-7-o) (o) () ( 22 5) 0-944 103-4 2l6'I -15-0 248 Feb. 27 Centre (287-8) (-7-2) (5 2 ) (869) (248) 48-448 JB, B 0789 293-0 89-0 + 13-3 545 0-840 III-8 343-8 22'l 21 I 58-027 A, H 145 0-787 300-0 320-4 + 18-2 156 73' '45 0-989 70-5 322-7 + I7'9 '34 478 1 66nj? 146 0-/22 260-9 321-2 -i 1-6 '5 114 417C Feb. 1 8 Centre (4'9) ( 7'oj ('34) (478) (922) 147* 0-631 2 597 313-9 I2'l 9 Me. 147 ,0-212 21'2 270-5 -(- 4'2 '3 79 0-868 102-3 213-9 -'4'3 260 50-075 A, H 0-907 281-2 83-0 + 7 - o 560 0-921 75-0 2IO'O + 10-8 39' '45 0893 64-9 321-1 + 18-6 125 606 Feb. 28 Centre ( 2 74'7) (-7' 2 ) (-84) (933) (1068) Me. ,46 0-846 99-3 321-2 1 1-6 28 173 5000 146* 0-955 66-1 311-1 + 20-3 o 49 732c Feb. 20 Centre ('9'5) (-7-0 ('53) (828) ('79 2 ) 59-077 H, A '45 0-900 294-4 316-3 4-18-3 123 654 8980 146 0-863 260-4 321-1 -11-9 16 76 353<5 Me. '47 ' 2 53 320-9 270-1 4- 4-0 '4 7' 5''5'7 JB, B '+5 146 0-732 0-623 57-0 997 320-4 321-9 + 18-1 .68 62 7 2 5 383 Mar. i >47t Centre 0-960 8ri 188-5 (260-9) + 6-4 (-7' 2 ) ('53) 1 1 (8,2) 439"? (1690) Feb. 21 Centre (o-5) (-7- ') ( 2 3) (i 108) (o) 60-209 A, H '45 0-977 290-5 320-1 + 18-2 109 634 994/ 146 0-968 259-8 322-2 -11-7 3' 39 o/ 52-527 JB, B '45 O-6oi 46-1 320-2 -r-iS-2 ,46 658 Mo '47 0-448 2 93'9 270-0 + 3'9 1 1 66 ,46 0-428 101-3 322-0 11-2 48 2 73 l>lo. >47t 0-782 72-6 197-1 + 8-8 13 39 1 -?4.8c '47 0-986 83-1 267-9 + 5 "6 166 '47t 0-782 75-6 196-4 + 6-5 '3 62 j JT Feb. 2 2 Centre (347' 2 ) (-7-1) ('94) (1097) (o) Mar. 2 Centre ( 2 45'9) (-7' 2 ) (146) (8 ? 2 ) ('73 2 ) 61-266 A, H '47 0-644 2 85-3 270-4 + 4' 2 10 49 53-496 JB, 1! '45 0-489 28-9 320-0 + 18-3 136 679 '47t 0-602 67-0 198-1 + 77 10 7' | 146 0-223 107-0 321-9 -10-7 63 359 Me. '47t 0-645 70-8 194-3 4- 6-6 o 9 ( 22 7 C Feb. 23 '47 Centre 0-946 8r 4 264-6 (334-4) +- 5'7 (-7' 2 ) '9 (218) .56 ("94) 42371 (4 2 3) Mar. 3 '47t Centre 0-691 72-1 190-7 (232-0) + 6-9 (-7' 2 ) (20) 23 (IS*) (227) Group H4t, February 14. A small spot. Group 145, Ffibnriry i8-Marcli 2. A very large spot, with two or three small ones near it. Group 146, February zo-Maroh 2. One largo spot, surrounded by many small ones. Group 146*, February 20. A small spot following Group 145. Group 147, February zz-March 5. Two small spots. The preceding spot alone has appeared by February 22. The following and smaller spot decreases in size as the group crosses the disk, until on March 5 only the preceding spot is left. Group 147*, February 27-28. A small s| ot following Group 146. Group i47t, March 1-3. A number of small spots in an irregular stream. TAKKN M liKKKSWiril, AT H.MiVAKI". \M> Al M Kl IlitriiNK IN TUB VKAKS 1874 TO 1877. 13 M. i- :'- ;' 1' 'siiii us .m' ' ft ] 1 1 Jll (11 l~ 1 <* I 3 ill jll H if . O O o 1875. 63446 jii. ii 147 0-934 277-0 271-4 + 3'8 3' 584" 71-060 A, H 0-970 279-4 '77'5 + 7-3 485 48 0-411 3485 208-1 + 16-4 18 90 Urn '49* 0-581 92-1 67-4 7'i 16 108 5 << ntr.- [203-3) (-7-3) (18) (Itl) (584) .!< . 150 0-831 89-7 46-8 - 3-8 28 1 80 394/ 0-95S 7''5 33-4 +'$'* 108 Mar. 13 Cent>e (44) (188) (087) 6^-070 A, H 0-967 285-6 i 267-9 +13-1 2 43 Mi- 0-908 281-4 2587 + 7-2 336 , 4 8 0-446 331-4 107-9 + 160 19 168 72-644 JB, B '49* 0-262 93'* 66-9 - 7-8 o '4 6 Cwitn ;i95-i>( 7-1) (1?) ('68) (579) 150 0584 87-0 46-5 - 4'' 28 169 Mar. 14 Centre (81-1) (-7'*) <*8) ('83) (o) 65-082 A, 11 0-9*9 184-7 *477 + 9'8 285 48 0-571 311-3 107-7 + 16-1 34 3" 73'5*4 JB, B 150 0-394 83-3 46-8 - 3'9 *5 166 Me. '49 0-741 257-1 219-7 -144 '9 '39 Mar. 15 Centre (69-7) (-7-') (*$) (166) (0) '49 0-700 *549 116-1 15-7 8 55 II ..r. 7 Centre (i8i7)( 7-1) 61) ($l) (*8J) 74' '*7 A,H 149* 0-076 231-7 66-0 - 9-8 10 lift 150 0-273 78-5 46-7 - 37 11 in 66-884 " W1: 148 0-838 294-1 110-5 +'56 9 79 Mr. 16 Centre (6V5) (-7'') (II) (131) (o) 14^ 0-787 298': 104-3 +'6-9 5 84 H. '49 o-954 1566 *3' 5 -'4'9 55 '49 0-912 154-6 224-6 17-0 o Si 75-760 H, WB 150* 0-275 258-4 569 IO'O 6 35 Mar. 8 (158-0) (-7-2) ('4) (*99) (o) 150* 0-215 *5^'4 53-3 - 9'9 3 34 150 0-125 300-0 47'3 - 3'5 ii 45 H. 150! 0-191 87-4 30-1 6-5 4 *7 6 " JII, B 148 0-893 191-8 208-2 + 16-5 5' 281 1203;> '5' 0-993 70-8 320-8 + 18-0 55 5*9 '49 0-964 *54'4 225-1 -17-0 o '79 1 04/1;; 0-965 IO2'0 325-3 ~'3'4 577 864 72-1 92-5 + "5 37' Mar. 17 ('nitre (4'-') (-7-0 (79) (670) (577) 9 C'-ntic C49'3) (-7'*) (5') (460) (1678) 76-570 JB, B 0-897 285-5 9, -7 + 10-5 435 150* 0-410 262-7 54-6 - 9'+ 21 85 68-528 JB, B 148 0-977 287-6 21 1-2 + '5'4 *7 *47 983/ 150* 0-294 181-1 47-1 - J'S 6 26 49* 0-931 94'5 67-4 - 6-8 20 182 686^ '5' 0-955 69-2 321-2 + '7'5 9' 384 34*/ Mar 10 Centre ('36-4) (-7-*) (47) (4*9) (1669) Mur. 18 Centre 0-909 IO2'2 3*4-3 (30-4) -14-0 (-7-0 (118) (495) 518 C*95) 6959: JB, B 0-908 281-6 ,8 5 -I + 8 i 77-691 H, WR 150* 0-694 263-9 59-8 - 9'3 o 9 '49* 0-819 93'5 6 7 -| 7-0 3' 213 789. 150* 0615 163-0 537 - 9-8 o '9 150 0-971 91-9 46-0 - 3-6 48 124 150 0-531 274-5 47-5 - 3-6 o 18 n Centre (iiti) (-?'*) (79) (437) ('378) H. 150! 0-273 151 0-854 168-9 64-4 3''5 321-9 7-0 o + 17-6 50 10 363 4507 Mar. 19 Centre (15-6) (-7-0) (50) (439) (450) 70-680 H, KP 0-967 179-0 181-9 + 6-8 o 13 j84n/ !$ 0-651 92-8 67-2 - 7-3 8 57 78-076 A, H 0-969 280-5 84-6 + 8-3 3'7 H. '49* 0-673 95-4 65-5 - 90 22 150* 0-754 263-9 597 - 9'* o *3 93 1 ,,f 1 : 150 0-875 Ontrn 90-7 469 - 4-2 (io8-oW- 7 -2) *9 (37) 92 50 4 r (184) (888) lift .50" 0-670 0-598 263-2 274-0 52-8 - 9-8 - 3'3 4 2 '4 '7 88 1/ ;]. 148, M ireh ?-io. (Wral small spots ran#-d in a straight line. Group 149. March 7-9. One S|K)t. 149', March 10-16. One spot, regular in shape. It ha* divM.-d into two parU bv Marrh i*. and it not seen on March 15. : 14'.', March u. A small |t. ll si. Single ' 150*, March 17 M all spota, forming tp Group 150. March i- 10. A mull spot, not *cn ; * ; probably hidden l>v tin- wire. .[. 151. Mar. 1. i- - v One lirtf* spot. 14 MEASURES OF POSITIONS AND AREAS OF SUN SPOTS AND FACUL^E ON PHOTOGRAPHS Measures of Positions and Areas of Sun Spots and Faculse on Photographs continued. 1 C ~~ HELIOGKAPHIC Sl'OTS. FACULJS. i- r. r. HELIOGKAPHIC 1 SPOTS. ' FAcrL.F. *- CO f- V CO 2 1 -- ~ ~ g 4 3 1 c 1 t- &- .. | Oreeinvit-li ^ "ti V- <$ T? H-r QJ Greenwich t: ^ ^- W= C Ci-.-il ei U M oj 0) BJ. ol Civil c! ,j. O.= |l 11 Dime. C E Jl | P I 5- gp Time. g. g 1 5) a B^ *1? t t c S~5 C . rf c o _ CO k o -2 E " C 8"! a ^ d C 00 c ^^ o 3 B U 12 .2.2 '5. H J"x nil '5 1 0-817 62-0 321-3 + 18-0 57 329 152 0-226 40-6 250-6 + 3'2 O 36 Mar. 20 Centre (10-5) (63) (470 (2129) 0-924 78-3 193-2 + 8-1 1193 Mar. 28 Centre (259-0) (-67) (57) (366) (1769) 79-207 A, H 150* 0-833 262-9 52-0 - 9-8 8 807^ 150* 0-817 261-9 50-8 -10-7 o 1 1 87-713 H, WE '5' 0-982 290-6 319-1 + 187 27 224 839/" 150 0-788 271-0 47-5 - 3'5 o H 152 0-265 3'7'5 2537 + 47 19 85 Me. 151* 0-21 I 235-6 5-9 -13-7 8 107 0-243 327-6 250-9 + 5'2 20 151 O-672 53-4 321-2 + 17-8 62 362 77on/ 152 0-192 333-3 248-3 + 3-3 10 88 0-972 lOI'l 278-2 -12-4 150 H. 152 0-188 320-5 250 2 +1-7 o 5 Mar. 2 1 Centre (355-6) (-7-0) (70) (52) ('727) 152* 0-680 107-0 200-9 16-4 o 31 152* 0-713 107-2 198-2 16-9 6 40 0-861 79'4 185-4 + 5'6 764 80-725 H, WB 0-925 264-5 43'5 - 7'7 438 Mar. 29 Centre (H3-4) (-6-6) (62) (-(93) ('603) H. 151* 0-557 253-3 8-9 -15-0 o "3 '5' 0-482 30-1 320-8 + 17-9 4" 247 Mar. 2 2 Centre (335-5) (-6-9) (4') (360) (438) 88-703 H, WK 152 0-441 295 i 2 53'9 f 4-8 21 137 152 0-400 297-8 251-1 + 4'7 5 34 IS 2 0-347 298-8 248-1 + 3'4 17 50 81-435 JB, B 0-91 I 264-3 32-3 - 8-1 230 . 152* 0-479 iiro 202-8 -'57 o 36 151* 0-687 256-7 9-6 -14-1 1 1 1 459 i 52* 0-547 111-3 198-3 -17-0 23 59 151 0>34 12-4 320-6 + 18-1 72 343 Mar. 30 Centre (230-4) (-6-5) (66) (316) (o) 0-829 77-5 271-9 + 6-3 276 Mar. 23 Centre (326-2) (-6-9) ('83) (802) (506) I 89-752 H, WB 152 0-642 285-4 2547 + 47 28 172 82-115 A, H 0-947 257-9 29-3 -'3-7 229 152 0-594 285-6 251-3 + 3-9 o 20 Me. 151* 0-792 250-9 9-5 -"9'3 87 702 3360 152 0-552 286-2 248-4 + 31 4 6 IS' 0-425 3467 323'' + 17-5 55 296 H. 152' 0-267 127-6 203-9 -'57; 8 57 Mar. 24 Centre (317-2) (-6-9) (H2) (998) (565) 152* 0-355 120-9 198-1 -16-6 26 46 0-898 76-7 I54-5 + 8-9 287 Mar. 31 Centre (216-5) (-6-5) (7) (34') (287) 83-448 JB, B 151* 0-931 256-9 8-9 -14-6 102 49' 8796 151 0-542 321-0 320-6 + 18-5 66 325 0-921 105-5 2319 16-9 2 37 Mar. 25 Centre (2997) (-6-8) ('68) (8<6) (i 1 16) 90-587 WB, H 152 0-689 282-0 247'7 + 3'5 o 9 152 0-723 281-7 250-4 + 3'9 o 38 152 0-771 281-2 254/6 + 4'4 o 120 84-608 JB, B 151* 0-986 257-0 5-9 -13-9 o 215 I7ic 152* 0-221 142-8 197-4 -.6-5 9 78 '5i 0-690 306-3 320-1 + 18-6 60 323 152* O-lSg 155-8 200'8 16-3 o 7 0-951 71-4 215-5 + I 5'3 5 6 9 152* 0-I70 166-2 203-0 -15-9 o 65 Mar. 26 Centre (284-4) (-6-8) (60) (538) (74) Apr. i Centre (205-4) (-6-4) (9) (Ji?) () 85-428 JB, B '5' 0-795 300-0 320-0 + 18-8 4' 288 91-460 JB, B 152 0-880 278-7 254-4 + 4'5 28 122 528/ Mar. 27 Centre 0-902 70-1 212-4 (273-5) + '47 (-6-7) (40 (288) 557 (557) Apr. 2 152* 0-209 Centre 220-8 202"! |( I94-0) -15-4, 33 (-6-4) (6!) 194 (3'6) (528) Group 151*, March 20-26. Two large spots. Group 152, March iS-April z. A number of small spots. Group 152*, March zg-April 4. A number of small spots in a straight lii e. 1AKKN AT CliEKSWICII, AT H.VIIVAKH, AND A I 1 M EI.IU M'KNK, IN 1IIK YlCAKS 1874 TO 1877. 15 ; "iis ami Areas of Sun Spots uud Facula; on Photographs continued. MMuuraia SPOTS. FACUL* ^ = M MM l'.i: ll'llli SHOT*. K>n-LJt i | J ri"'h 1 iilla. i! 31 a. O Civil 3 s L (3- sfl Si te-3 31 i r* w , ^J BI |r ..J Tune. t | & < 4 \l I*. ..J z* 3 - / !- 1 "S _"" 'M' fl 2 = 59 5 14 1 i s * i "^ ^ 285 I :~ 2^ | J5* ^ -,< I 2 ' .'. tmo | i S X a i, J J .< 4 S ft O & J -^ < ^ ! ^ 1875. o O 1875. o 93-567 JB, B 0-834 295-3 218-1 4-17-0 *75 104-671 H, HP '54 0-329 318-5 3*'3 4- 8-9 '9 101 !$ 0615 252-7 203-5 -15-5 o 55 54 0-308 3266 29-5 4- 9'5 9 "53 0835 102-1 109-3 -'3'5 o ii 283*1 '54 0-288 33* ' *7'4 4- 9'3 o 7 0-912 78-0 I02'l 4- 8-2 34' '55 0-223 '34'4 IO-2 -14-3 59 370 4 Goitre (i66-a)(-6-3) (o) (66) (899) Apr. 15 ( entre 0-934 651 3 '47 (19-6) 4-20-9 (-5-4) (78) (487) 7<>7 (707) 94-507 J , 11 0921 2*6-8 218-2 4-12-8 44Q 53* 0-263 20-7 148 4 '4- 8-0 o .6 I0 5'543 Ml. B '54 0-449 303'* 30-3 4- 9'* 40 ,69 5 ' 'i-ntie C537)(-6'2) (o) (6) (449) '55 0-161 193-9 10-4 -14-3 75 336 0-861 60-6 3'4'3 + 21-9 823 Apr. |6 Centre (8-1) \ 5 4y ("5) (505) (8*3) 95V JB.B 0-916 285-8 205-6 + 11-9 405 53* 0-265 335-9 '47-8 4- 7'8 2 51 Apr. 6 (141-6) (-6-1) (2) (SO (405) 106-470 JB, B '54 0-615 293-0 30-7 4 9-5 21 148 '55 0-285 *37'5 lO'I -13-9 66 330 0-800 52-1 311-5 + 25-6 703 96-667 H, WB 94' 254-8 196-1 -16-3 393 0-917 76-* 291-1 4-10-4 397 II. I 53 0-453 *997 148-6 4- 7-4 3 59 Apr. 17 Centre (355-8) (-5-3) (88) (478) (iioo) Apr. 7 Centre (i2 5 -3)(-6-o) (3) (59) (393) 107-517 JB, B '54 0-806 285-0 33-7 4- 8-8 16 1 06 *5on/ 97522 J H,B 153* 0-597 291-9 147-8 + 7'9 o '7 '55 0-491 251-3 10-4 -13-6 64 292 Apr. 8 Cen;r- n t -o)(-6o) (o) (7) (0) 0-780 60-2 2964 4-19-2 202 0-907 73-3 279-2 4-12-7 191 Apr. 1 8 Centre (34*'o) (-5-*) (80) (398) (643) 98-108 A, H 1 53* 0739 2859 151-9 4- 7'5 o 16 Apr. 9 Centre (io6- 3 )(-6-o) (o) (16) (o) 108-444 .III, B '54 0-911 282-0 33-8 + 8-7 '3 76 6 1 5/ '55 0-652 255-2 lO'O -'35 3 252 0-936 72-3 262-9 + 14-6 241 99-641 II, WB 0-907 281-4 '496 4- 7-8 34' Apr. 19 Centre (3*9-) (-5-0 (51) (3*8) (856) '53t 0-314 304-8 100-9 4- 4'7 7 15 '53t 0-259 309 ' 976 4- 37 5 42 M. 154 0-885 77-5 25-4 4- 8-2 o 28 4400 109-581 JB, B '54 0-99 279-2 35'5 + 8-3 o 79 $oonf '54 0*905 76-0 23-1 4-100 o 21 '55 0-819 257-6 9-6 13-0 47 *43 jbnf Apr. 10 i ; ^ 0-962 Centre 102-6 I 1-2 (86-0) -'37 (-5-8) IS ..n April 10. One spot, regular in shape, on April 13. Has two roinpaniipiis un April 15 ; luit < April 18 only tlie chief spot remains. . Two large \*>l very clot* together. Group 156, April 10-11 . One small spot. 16 MEASURES OF POSITIONS AND AKEAS OK SUN SPOTS AND FACUL^E ON PHOTOGRAPHS Measures of Positions and Areas of Sun Spots and Faculae on Photographs continued. <2 | *c HKLIOGRAPHIC SPOTS. FACUL* <2 1 HELIOGRAPHIC SPOTS. FACUUE. 1 X 1 d A -. L. :- W L. Greenwich 3 T3 e I H x I !J> K-n I O Greenwich | S g p o Civil a c5'5 O w -5- o! - "S Civil O;= OJ fl A ~ 1? Time. s Sjg "w fl B. IQ Time 3 3 = c O ^ S *" |a I 1-2 g d -o d p Sj ^ ^ <- e 2 t- ., i"- 5 V t3 H ri ^cc" ^OT 1 g I t 1! O) O II f 1 ill" ||' sl 1 lis Hri! Sl-OTB. rL*. llr.i.UMiiiAi HI Si-uin. u*. k 1 I i t. 5 Greeuwi. h Civil liui e ^1 x -i " O-i ""*" Cireeiiwii-h Civil 1 ll 11 u:-r J o-i ta -i Tune. rf | li 'tf . B-^ C' M '?L *t Time. rf 0. H to a . 5l Si l| = *S o P Id 1 1* H *- T*- J" 2 K o 1| 1 5*^. ^""K &% 3 O Tt -- I* *** |g '- -- t-i \ dW* jU |5 i* c - S 1 la ? J. r y. a 2 J J X o (2 j M * < O u O 1875. o o "16 u, WK 0-958 253-2 15-1 16-7 282 I 53-602 JH, u 0-918 283-8 158-4 + 12-6 686 11 0859 252-0 0-3 -l65 "9 160 0-553 109-7 60-8 -io 8 58 496 M..v 18 Canrn (302'l)( -2-1) (o) (o) (40.) June 3 Cei.tre (92-6) (-0-2) (58) (496) (686) 138-077 <, u 0-910 250-8 26 18-3 288 154-532 JB, B 0-949 284-7 151-0 + '38 *>7 0-931 7*'\ *3'-i +15-4 209 160 0-380 119-3 60-7 -10-7 72 478 '9 < tMitre (2980) (-2-0) (0) (o) (497) June 4 Centre (80-3) (-0-1) (7*) (478) (*7) I39'77 A, u 0-904 71-1 222'O + |6'2 *59 '55' 6 34 .III, B 160 0-193 1567 61-3 -10-1 97 5*o M.-. June 5 Centre (657)( + o*i; (97) (5*o) (o) zo (2 84-7) ( 1-9) (o) (o) (*59) 158-532 JB, B 160 0-586 252-6 6,-8 - 97 57 502 I40-533 Jii, i; 0-963 8ro 191-8 + 8-2 226 J n in- 8 Centre (27-4) ( + 0-4) (57) (502) (0) Centre (26 5 -5)(-i- 7 ) (o) (o) (226) 66" u. w K I >7t 0-828 78-5 195-6 + 86 o 13 77/ 160-564 JB, B 160 '0-886 258-; 62-0 io-i 60 433 701^' 0-875 96-0 1899 -1- 4'4 121 June IO Centre (o - 5)( + o--) (60 ) (433) (701) * 0-984 81-6 171-4 + 8-0 *44 M.IV 22 (250-5) (-1-6) (o) OS) (54*) 161-560 JB, B 160 0966 259-1 61-5 10-4 87 457 5 82c 23 N Spots or Kac ate June i i Centre (347'3)(-r'8) (87) (457) (58*) 143 Jli, H 158 0-385 41-1 210-6 + '5'5 46 '59 0-896 803 163-0 + 8'o 35 95f June 12 No Spots or Faculiu. May 24 Centre (22 5 -8)(-l- 4 ) (o) (81) (95) 145-610 JB. i: "59 0-595 163-1 + 82 o *7 164-686 H, WB 0-906 254-9 9-6 -13 I 1 12 v 26 Centre 1 .- 1 (-') (o) (*7) (o) 0-861 83-3 246-8 + 6-4 1 86 * 0-971 68-8 230-3 + 20-9 35' 146644 H, Wit '59 0-403 66-9 162 7 + 8-1 5 26 June 14 (35'9)(+ ''*) () () (649) H. 0-922 82-6 117-9 + 65 103 Centre ( 1 84-6) ( i -o) (5) (26) June 15 No Spots or Fac ube. '47647 H, WR '59 0-217 4'-; 163-1 + 8-5 6 18 H. 0-803 793 1188 + 8-1 176 C.-I.T.- C7'-4) (-0-9) (6) (18) (76) 166-516 JB, B 161 0-566 80-9 247-6 + 6-2 13 '79 0-843 103-8 225-4 -10-9 *34 150-603 H, Wit 0-861 280-2 190-9 + 8-5 186 June 16 Centre (281-7) (+ '-4) (13) ('79) (*34) 11. 0-964 101-2 58-1 10-9 232 Mai Centre (132-2) (-0-5) (o) (o) (418) '67-457 JB, B 161 0-381 76-3 *47'4 + 6-6 87 545 ' >i->4Z JB, B 160 0-866 102-0 606 -10-5 3 79 June 17 Centre (269-2) (+5) (87) (545) (o) June i Centre i 19-9) (-0-4) (3) (79). (o) H'5'7 JB, II 0-853 284-3 164-3 +12-0 639 169-478 JB, 11 161 o-i 1 6 318-2 246-8 + 6-6 122 72* 160 0735 103-6 60'5 10 1 33 202 "5491/" 0-904 81-7 178-1 + 8-2 *"4 June : Centre (1068) (-03) (3.') (202) (1188) June 19 Centre (242- 5 )(+l 7 ) mi) (7**) (*'4> Group 157+. May 21. A small - p 158, May 24. Two small s [i 159, May 24-28. One small spot. - 160, June 1-1 1. Two spots. This group greatly increases in size on June 3 and following days Group 161. June 16-14. Threr ur four small spots close together. C IS MEASURES OF POSITIONS AND AREAS OF SUN SPOTS AND FACUL^E ON PHOTOGRAPHS Measures of Positions and Areas of Sun Spots and Faculse on Photographs continued. \ i ! ! 1 1 " HELIOGRAPHIC SPOTS. FACUL& = -= HEI.TOGRAPHIC . SPOTS. FACULJB. J jg t, Z 00 Greenwich "S a i 3 Ma 1 o Greenwich 2 B o IIM " <~<~ | 3 Civil 3 rt 3 :r o 11 11 Civil rt !- 55. o 5 w Time. IM 4 Si & 2. ! Time. o M C D . 5* IQ E 6 o ^ a jl OJ m '- ~ -* 1 . EM W 03 f c CJ c* C _' -W 5 J3'S c - -r- "T3 <~ ~ a ? O f to 3 O ^ *~^ *= -'* *^TJ 1 d* Ev. en o S ^ '^c MJ S la ii' fij. 1 o 9 xoT m o 1T.3 i 5 j- gliS 814 g S X. K b 1 3 3. < ' < < 3 SB ~ 5 ~ fi J J 1875. 1875. o o o 170-644 JB, B 161 0-366 283-4 247 9 4- 6-6 98 527 180-081 A, ii 0-916 281-8 l68'2 +12-0 545 June 20 Centre (227'0)(+ 1-9) (98) (527) () 164 0-583 2843 136-9 +10-6 25 72 Me. 163 0662 ; 109-3 627 10-4 16 130 163* 0-860 80-2 42-9 + 9'9 o ii 3 1 8/ 171-678 H, WR 161 0-605 277-4 250-3 4- 6-1 24 170 June 30 Centre (l02-o)(+2'9) (41) (213) (863) 161 0-521 278-3 244-4 + 6-0 34 2OI H. 162 0-215 139-7 205-3 - 7'4 o 18 162* 0767 69-1 164-9 + 17-2 o 22 773/ 182-426 JB, B 164 0-924 282-0 138-5 +12-3 1 8 139 265^ June 21 Centre (213-3) (+2-0) ( 5 8) (4") (773) 163 0-260 148-7 63-2 9-6 21 IO2 July 2 Centre (7l-o)(-r 3-2) (39) (24,) (265) 172-497 JB, B 161 0-705 276-8 247-0 + 6-2 72 44 162 0-198 203-3 207-0 - 8- 4 206 183-602 WU,H 0-987 279-7 136-5 +10-2 409 June 22 Centre (202-5) (646) (o) H. 163 0260 2IO'2 63-1 9-6 '5 93 July 3 Centre (55'5)(+3-3) ('5) <93) (409) 173-530 JB, B 161 0-854 275-4 247-3 + 5'8 103 333 955= 185-393 JB, B ,63 0-556 247-4. 62-9 9-2 '3 4 162 o-334 239-5 205-6 - 7-6 105 55' July 5 Centre (3 r '3)(+ 3'5) ('3) (40) (o) June 23 Centre (188-8) (+2-2)(2o8) (884) (955) 186-429 JB, B 163 0-729 253-3 62-9 9-5 9 38 I74-483 JB, B 161 0-942 2-5-4 246-4 + 5-8 7 '57 49 July 6 Centre (i8-o)i( + 3-6)1 (9) (38) (o) 162 0-524 251-2 206-1 - 7'7 184 775 June 24 Centre (176-2) (+2-3) ('9') (932) (49) 188-596 WR, H o"953 2 57-9 60-5 '0-3 409 H. 164* 0-825 74' 2 294-3 +15-2 o 27 39'" I75-552 -JB, B l62 0-704 257-4 205-7 - 7-0 181 856 July 8 Centre (349'4)(+3'8) (o) (27) (7i8) June 25 Centre (162-0) ( + 2-4) (181) (856) (o) 189-595 WH, H 164* 0-686 28 159 176-519 JB, B 162 0-846 259-1 2O6'2 - 7-8 123 826 H. June 26 Centre (I49-4) (+2-5) ('23) (826) () July 9 Centre (28) (-59) (o) 190-554 JB, B 164* 0-522 66-3 293-9 + '5'6 36 '44 177-53I JB, B 162 0-941 261-1 205-3 - 7'4 1 06 611 7'7'-' 0-947 80-5 252-1 + 10-3 826 .63 0-961 : 102-9 63-1 n-6 2 8 170 3 2 9P July 10 Centre (325'5)(+40) (36) (44) (826) June 27 Centre ('35-9) ( + 2-6) (i 34) (78i) (1046) 192-585 WR, II i 0'946 256-2 6"i -11-6 428 164* i 0-213 r6 296-2 + 16-5 o 1 1 . 164* 0-238 20-9 291-5 + 17-0 '7 75 178-611 H, WR 164 0-312 295-9 38-1 + 10-5 5 28 July 1 2 Centre (296-6) ( + 4-2) (-7) (86) (428) H. 163 0-870 104-0 62-5 I0'7 20 '63 4020 June 28 Centre (,2,-6) (+2-8) (25) ('9') (402) 193-644 WR, H 164* 0-267 324-0 291-9 + 16-7 6 69 H. 0-955 96-8 210-5 - 5'2 : 668 July 13 Centre (282- 5 )(+4-3) (6) (69) (668) 179-501 M, M 164 0-482 285-4 '37-8 + 9-8 10 5' 194-640 WH, H 164* 0-428 300-7 291-9 + 16-6 o 45 I6 3 0-750 107-2 63, 10-8 18 1 1 1 H. ' 0-897 100-1 206-8 7-1 609 June 29 Centre (109-8) (+2'9) (28) (162) () July 1 4 Centre (269-4) ( + 4-4) (o) (45) (609) Group 162, June 21-27. Single spot. Greatly increases in size, and breaks up into several spots on June 23. Group 162*, June 21. A small spot. Group 163, June zy-July 6. One spot at first, which breaks up into two on July 3. Group 163*, June 30. A small spot. Group 164, June 28-30. One small spot, regular in shape. It has broken up into several spots ou July 3. Group 164*, July 8-14. Two spots. TAKEN AT CKEKNWICH. AT IlAKVARI', AND AT MKU'OrHNK, IN THE YEARS 1 1377. 19 Mi'iisur Positions and Areas of SUM Spots au (56) (o) 100 660 w K, n 0888 282-4 Ij 2-5 + I3-3 583 11 July Centre (1897) (+5-0) (o) (o) (583) 213-472 JB,B i66*3 Aug. 2 Centre (*o'3) (+6-0) (77) (49) 0*3) 202-64 ; WH, H 0-975 84-8 85-9 + 6-3 1390 H. July 22 Centre (16 3-5) (+5'*) (o) (o) (1390) 214-501 JB, B i66a 0-772 *75'9 57> + 8-4 36 "4 i66i 0-592 747 43-0 + 77 29 145 203-044 A, U 0-780 251-4 206-9 1 I'O 347 Aug. 3 Centre (67) (+6-1) (65) (269) (o) He. July 23 Centre (l 5 S-2)(+5-2) (o) (o) (347) 216-492 JB, B i66a 0-97I 277-2 57-0 -t- 8-4 o 88 i66// O-9O2 276-4 45-0 + 8-4 37 112 644^ 20: jn. n 0-948 1 208-9 10-0 309 Aug. 5 Centra (340-4) (+6-2) (37) (100) (644)' 165 0-572 587 107-5 + 21-7 Q 12 0-960 104-4 67-3 12-2 "3 July 24 :itre (3 5" 1 ] (+5'3) (o) ('*) (53*) Aug. 6 No Spot* or Fac :..< 20544; JB, B 0-887 4 189-3 + 9'' 3*7 Aug. 9 No Spote or Fac ulte. 6 5 0*437 47-3 106-3 + 22-2 22 0-900 102-5 ^ 3-9 - 8-8 206 July 25 Centr.- C* 6-5) (+5-4) (o) (**) (533) 221-463 JB, B 0-822 283-5 330-2 + >47 163 Aug. i o Centre (747) (+6-4) (o) (o) (163) 206-519 Jll, B l66 0-929 83-7 43-8 + 7'9 '9 172 8 3 on/ July 26 Centre 2*3 (+5'5) 09) (I 7 2) (8 3 0) 222-599 JB . B 0-915 286-7 326-5 + 17-9 21 1 207583 .11:, l< l66 0801 843 44-8 + 7'9 95 0-976 84-2 1819 + 7' 1 62O July 27 tre (9 8-2) (+5'6) (o) (95) (o) An- II kn (597) (+6-5) (o) (o) (830 Gronp 164!, July 17. A short atream. Croup 165, July 14-15. One -mall spot. Group 166, July i6-Augut 5. Several smmll ipoU elote together. The group become* more ami more scattered up to Angntt i, when it bai completely divided into two |rU. - 20 MEASURES OF POSITIONS AND AREAS OF SUN SPOTS AND FACUL/E ON PHOTOGRAPHS Measures of Positions and Areas of Sun Spots and Faculae on Photographs continued. H yi = HELIOGRAI'HIC SPOTS. FACULAE. M 3 1 - HEUor;i!Ai'inr SPOTS. FACI-I..K | & t2 i A J S <2 (34i) 232-461 JB, B ,67 0-919 83-7 62-1 + 8-5 22 "5 1 68 0-987 84-2 483 4- 6-9 59 382 646 Aug. 21 Centre (129-3) ( + 7-o) (8.) (497) (646) 242-440 JB, B 168 0766 274-3 477 + 7'9 12 75 io7ip 0-838 1045 302-6 - 8-0 328 Aug. 31 Centre (357'4) ( + 7-2) (12) (75) ('399) 233-639 JB, B 0-896 276-5 177-8 + 8-9 3 2 7 ,6 7 0-783 85-0 62-0 + 8-2 26 82 168 0-919 86-1 467 + 6-3 5 300 1499M 243-526 JB, B 0-884 9 8 ' 2 282 " - 3' 8 967 Aug. 22 Centre ("37) f "T~ 7*Oj (76) (382) (1826) Sept. I Centre (343-i)(+ 7 -2) (o) () (967) 2 34'55 JB, B 0-944 2 77'3 173-6 + 9' 2 '35 > H, sr 0-959 2 78-3 40-9 +10-0 933 ; 167 0-641 85-3 62-2 + 8-4 '3 50 H.' 0-943 258-4 35'5 - 8-4 56. 1 68 0-8 1 8 86-6 47-1 + 6-8 62 2 53 Cjjonp Sept. 2 Centre (326- 7 )(+7-2) (o) (o) ('494) 0-962 103-3 30-2 -107 256 Aug. 23 Centre (102-3) (+7'o) (75) (33) (-36.) Sept. 3 No Spots or Fac ilhi'. Sept. 4 No Spots or Fac ulse. 235-682 WR, n 167 0-410 83-5 62-4 + 9'' o 3 2 Sept. 6 1 H. 168 0-637 86-9 47-0 + 7'5 18 161 to I No Spots or Fac ulae. Aug. 24 Centre (867) ('8) ('93) (o) Sept. 8 1 251-414 JB, 1! 0-913 2 597 33'3 - 6-3 291 0-895 286-8 303-1 +18-3 220 236-755 WR, n 167 0-174 78-9 62-6 + 8-9 o 28 170 0-566 135-9 2I 4' 6 '7'3 O '7 H. 1 68 0-423 8/7 47'4 + 7'4 20 129 0-900 82-8 174-2 + 9-7 224 Aug. 25 Centre (7 2 '5) (+7-1) (20) ('57) (o) Sept 9 Centre ( 238-9) (+ 7-3) (o) (-7) (735) i Group 167. August 20-28. One spot. Group 168, August 21-31. One spot. Group 169, August 30. One small spot. Group 170, September 911. Two small spots. TAKK MviiVAU'. \\; AI MKI.I:OUKNK, IN THK YKAKS 1874 TO 1877. II itioiis iiml Areas of Sun Spots and Kucula) on Photographs cuntuiued. ! 1 Huiooiumii.- Sron, F.* i jj | 1 IlKLIOCKAPIIlr *o. FAOI-L.K. fl 2 - SS "feS r 1 3 Si \ S 5 ' nwich 1 h 12 p Greenwich Civil 1 ' n 1 Time. . \ p 1 11 !| Time. I sj I *i h 1! | O * 9 9 j i ? : J ^00 'o ^, "5 _j. 0^ | w * 8| | 4 o .^ i"+ 11 3 r * IS 1. r [i 4 . , J in ill si 1 = w J'o f I : i 875. o 1875. o r6;o H, -i 170 0-417 199-6 2I7-4 -'59 o 24 270722 11, ST '73 0-494 ll 9 -5 318-4 - 8-0 *4 3 6 n 170 0-416 190-2 213 5 16-9 9 M. '73 '554 Il6-5 314-0 8-4 o 77 -, 1 1 ( 'entre ^205 (+7'*) (o) (33) (o) S-pt. 28 Centre (344') (-6-8) (t4) (*'3) (0) S,pt. .3 No ibsX 271-467 M, M 0-917 280-0 4''3 + 11-9 '3i '73 o 361 '345 3'9'3 - 8-1 *5 '57' '74 0571 230-6 ''3 -15-2 o 28 i ; 6-490 i n, n 171 0-96; 76-6 96-0 + 14-8 38 173 621,. 0-8 u 81-0 *797 + 11-3 53 S. I. 14 Centre '7' 9) (+7'*) (38) ('73) (621) Sept. 29 Centn (334'*) ( + 6-7) () ('85) ('84) * 57*47 8 .111, u 0-891 246-9 217-5 -16-8 '34 272-471 JB, B '73 0-255 171-1 3187 - 7-8 3* 120 171 0-866 76-5 98-3 +15-2 5 76 396* '74 0-746 241-6 3-8 -15-8 '4 172 0-294 93-0 141-7 + 6-0 1 1 Sept. 30 Centre (321-0) ( + 67) (32) ('34) (o) -. t 15 Centre (i S 8-8)(+ 7 -2) (5) (87) (53) 273-065 A, H '73 0-265 1988 318-1 - 7-8 77 j;S~426 .111, B i;i 0-740 76-O 98-5 + 15-1 43 641* Me. i. 16 Centre '3)(+7'*) (o) (43) (64') Oct. i Centre (3'3') ( + 6-7) (o) (77) (o) 259-096 \, H 0-960 8*7 63-, + 9-0 3*9 Me. Sept. 17 i 'i-ntre '37 J) ( + 7-') (o) (o) (3*9) 274-423 JB, B '73 '444 238-4 3'7'5 - 7'3 53 '74 '955 252-0 4-9 -14-9 o 20 373/ '75 0-269 197-6 299-9 - 8-2 27 1 66 260-679 n. B 0-866 80-3 56-2 +11-7 688 Oct. 2 Centre (*95'*) ( + 6-6) (27) (239) (373) II. Sept. 18 Ontn 116 6)(+ 7 -i) (o) () (688) 276-715 H, 8T 0-838 254-8 319-7 - 9-0 292 Sept. 2 i '75 0-620 247-8 3003 -8-2 13 116 2320 10 No .Spots r he ilte. . '75 0-589 245-6 297-7 - 8-6 6 27 S-,*. 23 1 Oct. 4 Centre (265-0) (+6-5) (9) ('43) (5*4) 166574 n, -i 0-889 266-2 101 'I O-2 *97 il. 0-871 286-5 99-8 +17-7 336 t. 24 tVntr.' (38 8)( + 6- 9 ) (o) (o) (633) 277-566 JB, B '75 754 *54'9 300-7 - TO *7 85 166;; 176 0-749 285 2 302-1 + 15-6 |6 lOO/i '77 0-376 287-4 275-2 + 12-4 o *7 267-593 H,8T 0-944 283-9 96-9 +15-4 265 Oct. 5 ( ''-litre (*53'8) (27) (128) (366) H. 0-948 104-2 316-0 1 1-1 35 0-972 266-5 101 7 - 7 657 8epL 2; Centre (*s 3)( + 6- 9 ) (o) (o) 0*7*) 278423 JB, B 0-970 260-5 317-1 - 7'5 299 0-855 249-3 2978 -14-0 111 269-546 Jli, B 0-877 280-0 61 '4 +12-0 53 '75 0-862 257-4 300-3 - 7-4 14 73 : i - - '73 0703 109-4 317 7 8-4 18 in 76 0-860 284-0 302-1 -r-15'3 o n 328n/> 0-986 80-5 278 5 +10-4 192 '77 o 581 281-1 + 11-6 o 12 Sept. 27 (3 59 -6)( + 6-8) (18) (III) 6 < .-ntr' *4*'5) ( + 6-4) ('4) (96) (9' ;i 171. Sr],t.-iuber 14-16. Three or four very small S|K>U. ember 15. Two very small spoU. r 2--Octol>er z. One s|>ot simoiincli-il by several very much smaller onri. -mlier ig-Octolx-r . One small *|>t. Tin- pbotognph on October i is too denie for the group to be ien. Group 175, O'-tnber 1-7. Two 9|>ots. Qron; -r 5-6. Two small spots cloee togctln-r. ; -9. A scatter*! cluster of very .-mall spots. 22 MEASURES OF POSITIONS AND AREAS OF SUN SPOTS AND FACUL/E ON PHOTOGRAPHS Measures of Positions and Areas of Sun Spots and Faculae on Photographs eoHtbwed. k | HELIOGRAPHIC SPOTS. FACULJ3. 1 "c p HELIOGRAPHIC SPOTS. FAOUTJB. fc .8 A h 3 0) d ri -3 a . t- i* CM Greenwich 3 T3 1 C oJ rt ""d U* Time. c gtf m K ^ ll Time. f ! M C p| > IQ 1 1 c jn O "(3 O s -S <- I- i EC *a ff "S-* "s 9 ^ a a S *s e^ SI d . , .2 QJ O 'So 1 o"^ ^"-j; ^^ S d 02 fl O 'm S ^H iJ ^ Q a? ,, S o 02 1 *O ' <3 C *-*3 , AN1> AT M Kl HulIKNK. IN TI1K YKAKS 1*74 TO 1877. n M. . I'liMtimis mul An-iis i>f Sun Spots ami Kiicul.i on I'lmiicniiili* - -ctuituiued. V 1 Hi uiM.iiAriiir SPOTB. FACUIA 1 | IlEUtxiRArmr 1 SPOT*. K* it*. 5 2 - .23 a 3 S | ii 31 O Greenwich 1 1 . 51 si 1 j> oi ^ Ciril -a oi .a -^ I Ii 1 s?r BI h 11 Time. 1 gl h |J t ti _ 4 ^* j>J! jij o V. j. Vi a 2 j 8 * && J Jl p P ! 1 jll ]ti I 1 | l K 12 S r ! 1 |1| |1! |1 1875. O o o 1875- o o 316-026 A, 11 0-889 278-9 169-1 4- 9'* 5*8 328-572 JB, B 182 0-895 263-2 4-' - 5-4 *9 '49 i6ot/ Me. 0799 2507 157-1 -13-4 186 183* 0-266 333-0 308-3 415-0 21 Nov. 13 ( 106-5) (+*'9) (o) (o) (714) 1840 0-219 226-9 310-4 - 7'* 30 1 86 1 84^ 0-174 203-1 305-1 - 77 10 53 85 0-310 56-0 286-1 4113 15 40 318415 JH, I) 0-960 250-3 146-8 i8'i 1 66 Nov. 25 Centre (301-*) (84) (449) (160) 181 0-924 287-5 142-0 4 i-'i 9 zoo*/ 0-902 1 12-8 13-6 19-2 219' i ; (75-')(4*-6) (o) (9) (585) 329*082 A, H 182 0-940 264-3 4-0 - 4'9 13 *5 383/ 184 0-306 241-5 3101 - 7-1 26 129 .. 184 0-247 231-2 305-5 - 7-6 30 321-410 .111, n i82a 0-604 I0 4'9 359-8 - 7-1 34 136 ''' 183* 0319 316-0 307-6 + H-5 o 8 |82/. 0-685 105-9 354-0 - 9-1 '5 61 8 5 0-228 40-2 285-8 4-11-3 4 38 0-932 76-9 327-1 4-13-' 54* Nov. 26 Onto (*94'4) (4-1-3) (43) (330) (383) Nov. 1 8 ( 'fiitrr (35'6)(+*-3) (49) (97) (54*) . 330-077 A,H 0-953 262-2 353-1 - 7-1 286 182 0-989 265-1 *'5 - 4'7 o '34 322-401 M, M 0-423 111-4 358-8 - 6-8 25 140 Me. 184 0-498 *54'5 310-1 - 6-6 *3 188 1826 o 508 1114 354-' - 8-7 7 4* 185 0-195 338-0 285-6 + 11-6 o 8 183 0-706 76-9 410-7 7 36 520/ Nov. 27 Centre (281-3) (*S) (330) (286) Nov. 19 ( Vniri- (**'5) (4*-*) '39) (218) 332-096 A.H 0-876 287-4 3153 415-6 *33 Me. 184 0-832 262-1 3107 - 6-0 35 *49 377 C 3*3-539 M, M 18211 0-183 144-6 ''4 - 6-5 37 126 Nov. 29 Centre (*54'8) ( + 0-9) (35) (49) (610) l82// 0-267 1*99 3557 - 7-8 16 75 83 0-485 71-9 339-7 410-4 13 63 84 0-891 100-3 305-4 - 8-2 23 101 333-108 II, A 84 0-935 263-5 310-2 5-8 35 *34 5**/ 185 20 0-992 78-6 284-7 (7-5) 4- 1 1 -6 (4-fo) (89) (446) (o) Me. Nov. 30 Centre (.4-4) (40-8) (35) (H) (!) 341-059 H, A 0-884 44-4 84-1 438-9 *75 S*5-4*9 M, U itsa 0-376 247-5 2-9 - 6-6 22 96 Me. 0-912 78-3 7i-5 4-10-6 **7 1826 0-268 2*,5'5 355-4 - 6-9 16 70 I >ec. 8 Centre (36-6) (-0-2) (o) (o) (50*) 183 0-168 !-- + 10-9 5 18 184 O'6o6 105-6 306-7 - 7'9 63 267 185 0-839 77' 286-2 + 11-8 "9 56 37on/ Dec. i o No Bpoti or Fac ulee. NOV. 22 Centre (34*'6) (+1-8) (>*5) (507) (370) 347-449 JB.B 186 0-314 341-1 584 + 16-2 o 1 1 187 0-702 97-5 8-3 - 6-0 10 3*6-498 JB, B i8sa 0-585 256 o 3'* - 67 28 97 !>.. 14 Centre <5*'4) (-1-0) (o) (21) (o) 182/1 0-478 2; 1-4 355-5 - 7'3 6 39 183 0-26; 303-9 34''4 4- lO'l 10 1840 0-349 11- - 3105 - 7-8 44 181 184'- 0-442 1 1 .-- 304-3 - 8-3 19 88 348-074 H, A 0-943 88-4 333-9 I'! iSS 18; 0686 74-8 286-2 411-5 11 62 M.. l8 9 0-987 102-9 JS7 -12-9 39 345 2-1." Nor. 23 Centre (3*8-5)(+i'7)(io8) (477) (o) Dec. 1 5 Ontn- <44'*) (39) (345) (4*6) !> IM. N Tember 15. One small spot. ( ip 181, November 18-17. A stream of poU. Group 183, Nnvemlwr 19-13. Cluster .f twc, or three small spots. !];'. N . - I'.UT 15-16. Four very small spot*. Group 184, November 10-30. Turn l.ir^'e spots, with several very small ones between them. A somewhat scatter.'! group. Th> ^r bnak tip into two OB November 13. Group 1 8?. N'.vember 10-: - -not. up 186, December 14. One small spot. Group 187, December 14. One small spot. Group 188, December 17-13. Group of three or four spot* ranged in a line. Group 189, December 15-14, One large spot. 24 MEASURES OF POSITIONS AND AREAS OF SUN SPOTS AND FACULA: ON PHOTOGKAPHS Measures of Positions and Areas of Sun Spots and Faculse on Photographs continued. b E "c HELIOORAPHIC SPOTS. FALTL.K. 1 | "c HBLIOORAPBIC Sl'OTS. r.\(TLK fr. I i 3 2 e fc. i- " >- t. c c ~ S t- t- p. 1> o " *"" **" --. - c Greenwich a C . * : rr C Greenwich a i; *- ,,,__ ^ Civil a 3 d 5 8*2- o! Civil' H <0 gj_ II .^ Time. E ji 1 gs ?~ ll Time. & g t* a *2 +j 11 E C 4" *3 O 5 c . V 1 d *a o ,i "S __,i. O t^. i ! - ** to s"g c . -J 5 i |1! glc rt S I- P O "o *A |o O O co p M "c - I 5 3 ^ S c < ll 1875. o O 1875. o o 349-071 H, A 189 0-931 103-1 323-0 -12-7 4' 388 54 2 / 354-081 H, A 188 0-575 262*2 359-8 6-0 o 23 Me. Dec. 1 6 Centre (31-1) (-It) (4') ( 3 88) (542) Me. 189 0-167 0-927 163-8 101-2 322-3 i i-i i i-i 25 174 306 Dec. 2 1 Centre (325-0) (-1-9) (25) (197) (306) 350-497 JB, B 188 0-278 111-5 357-3 - 7-1 22 70 355-063 A, H I 88 0-719 263-4 357-8 - 6-1 12 Dec. 17 189 Centre 0774 103-7 322-4 (12-3) -11-4 (-4) 54 (76) 366 (436) 274/ (274) Me. Dec. 22 189 Centre 0-244 230-9 3*3-2 (312-1) -10-8 (-2-0) 29 (29) '54 (i 66) (o; 356-550 M, M 188 0915 264-0 358-6 - 6-3 O 27 1840 351-026 H, A 0-937 284-9 73'7 + 13-4 382 189 0-512 253-5' 322-3 10-2 30 161 1 88 0-147 129-2 - 6-8 16 I0 5 Dec. 23 Gentry (2 9 2'5)(-2-2) (30) (188) (184) Me. 189 0-691 106-3 322-8 -12-3 36 322 2970 0-804 104-1 313-2 + 10-3 123 0-946 79-3 294-6 10-6 301 357-54 JB, B 0-984 263-3 359-2 - 7-1 '55 Dec. 1 8 Centre (5-4) (-5) (52) (427) (i3) 189 0-706 257-2 3237 10-6 18 84 Dec. 24 Centre (279-5) (-2-3) (18) (84) <-55) 353-108 Me. B, A 1 88 189 0-370 0-303 257-2 123-7 359-0 323-0 - 6-3 -11-3 O 16 7' I 7 8 363-087 A, H 189* 0-856 262-7 265-2 - 7-7 3 33 2O2C Dec. 20 Centre (337-8) (-17) (16) (249) (o) Me. Dec. 30 Centre (206-5) (-2-9) (3) (33) (202) Group 189*, December 30. A small spot. TAKEN AT I I KKKXWICII, AI 1 1 AK\ AK1>, ASH AT M! . IN TIIK VKAKS 1*7-1 [(I 1S77 .\lt-;isuiv> "i I'o.silioua and Areas nf Su:i Spnts ami Fauultu on Photographs continued. I M Hl-LUH.UAl Ml' SPOTS. ,.,. 1 i A a HKLiookAraio Sron. UK b 5 c s i | 8 S i! |1 o , wich 1 ll & ii jji "S^- .- Time. Ii 1 Si 1! ci i.anu.li-. jll I 1 o 3* Diatanoe f of San'i I'oaltion Asia. 1 | A |1S oV III < 1876. o O 1876. o i ft, or Far ul;,-. 11-472 JH, H 191 0945 184-4 3*7'5 + 11-7 6 191 192 o-337 109-9 239-7 -"7 53 266 4-4": Jli, II 190 0-649 93-6 81-6 ;-i o 16 '93 0-536 104-4 116-6 11-1 o 12 ' r. ( I22'2)( 3'7) (o) (16) (o) '94 0-171 229-9 170-9 -'5'3 o '3 hill. 11 (Vntre (*5 8 '5) (-5-4) (59) (58) (o) 10 072 V H 0-972 184-7 123-4 -f'3 '* 250 190* 0-320 321-0 60-4 + 10-2 3 * 12-511 JB, B 192 0-144 '437 *39'7 ll'O 45 *5* M 190* 0-287 330-1 56-9 + 9-8 1 1 '93 0-327 "37 226*9 -11-7 o '3 0-974 76-5 333-2 +12-1 *93 '94 0-557 251-7 277-7 -14-6 '3 '3* Jan. ii Centre ( 4 8-6) (-4-3) (3) (3') (543) lun. 13 ( Vi.: ii (*447) (-$'$) (58) (397) (o) 11-052 A, II 190* 0-493 ?oo'6 61-2 +10-5 o '9 23-466 II, II 192 0-171 227-4 239-6 ii-i 4 144 M.- I 9 0* 0-446 337 577 +10-1 o 5 '94 0-703 *539 176-5 -15-1 78 3*o 0-914 74-0 330-3 -12-9 500 Ian. 24 Centre (ijn) (-5-6) (i 16) (564) (o) Jan. 12 Gmtn <357)<-4'4) (o) (*4) (500) 24-511 JB, B 0-874 289-5 276-3 -14-0 '45 1 1 192 o-377 250-8 *39"7 -11-3 46 147 12-091 A, H 0-872 70-2 314-1 + 4-8 237 '94 0-856 1557 *77'5 -15-1 7' 335 86o/ 0-875 100-2 318-5 in *73 Jan. 2 5 Centre (118-5) (-5-6) ("7) (58*) (1005) Jan. 1 3 (') (-4-5) (o) (o) (5'0) 15-688 H, NT '94 0934 255-6 272-6 -'5'5 o 118 at 192 o 597 256-9 *39'4 -11-4 o '35 17-526 Jli, 1! 191 0-436 309-1 330-S + 11-2 6 16 Jan. 16 Centre (103-0) (-57) (o) (53) (o) 192 OQ45 99-6 239-2 -10-7 49 266 ;88x/ Jan. 1 8 Centre <3'0'5) (-5-0) (55) (191) (388) 26-496 JB, B 192 0735 157-0 139-6 -'3'4 10 110 '94 0-980 253-8 171-8 -17-0 o 96 Jan. 17 Ceuire ('9*4) (-5-8) (10) (106) (o) 18-503 It, II 191 0-591 298-8 3*9-5 + I1-2 42 162 192 0-857 99'9 238-5 in 105 658 428.7 Jan. 19 Centre (197-6) (-5-0 ('47) (820) (4*8) 17-099 A,H 191 0-815 158-8 *39'3 -11-5 9 5* Me. Jan. 28 Centre (184-5) (-5-8) (9) (5*) (o) 19-7 1 1 -i, 11 191 0-783 189-3 3*9-5 -fii'6 o *9 191 0-751 192-5 327-0 -f- 13*1 O '*4 192 0-672 102-1 *397 I2'O 67 35* *8'445 JB, B 192 0-954 *57'3 1398 -13-9 o 68 6i 7 / Jan. 20 '93 Centre 0-828 I03-3 225-8 (1817) -13-9 (-5'*) o 138 (67) (643) (o) .Ian. 29 '95 Centre 96-7 879 (1667) - 77 (-5-9) o (o) 62 (I JO) (617) 10-723 H, ST 191 0-875 287-9 316-7 -t-12-8 o in 384- 30-452 .IB, B '95 0-786 95-2 88-4 - 79 IO 35 *79/ '94 0-191 22O-3 275-6 13-6 o 40 .Ian. 31 Centre (140-3 (-6-1) (10) (35) (79) II. '94 0-164 196-9 271-1 ~'4"3 5 '9 192 0-485 1OJ-0 239-8 -11-9 47 301 '94 r '93 0-679 103-9 "5'8 -13-3 o 45 32514 B, B '95 0-421 957 88-2 - 8-0 5 25 Jan. 21 (Vntre (i68-3)(-5- 3 ) (52) (Si6) (578) Feb. 2 Centre (-6-1) (5) ds) (o) Group 190, January 5. Scattered group of very faiut small spot*. Group 190*, January i i-n. A abort stream. Groii|. 191, January 18-12. Scattered group, but with two |.rinci|l poU. Group 192, January 18-19. Single large pot, but sereral (mailer pot art aen on January 19. Group i9j, January 10-13. Scattered group of iinall ajiots. Group 194, January 11-27. Scattered group of small apota. A chang.- of ihape is seen on January 24. Group 195, January 19- February 4. Single spot. RESULTS, 1874-1877. 26 MEASUHES OF POSITIONS AND AREAS OF SUN SPOTS AND FACUL^E ON PHOTOGRAPHS Measures of Positions and Areas of Sun Spots and Facuhu on Photographs continued. g 1 'T. HEUOGJ'.APHIC SPOTS. FACULJJ. jO * ^x IlKLIOdKAl'HIC Sl'OTS. FACUL.K. cj cn M B & .1 H 197 0-308 336-7 117-2 + 9'3 9 128 Me. Me. 198 0-501 88-7 80 o - 5'6 15 72 Feb. 17 Centre (28ro)(- 7 -o)(, I7 ) (701) (o) Mar. I Centre (IIO'I) (-7-2) (24) (200) (o) 48-414 JB, I! 0-958 284-7 334-8 +ii-8 113 61-595 JB, B 198 0-155 76-9 81-5 - 5'2 2 16 ,96 0-397 251-4 286-4 -I3'7 i 06 516 Mar. 2 Centre (90-1) (-7-3) (2) (16) () Feb. 1 8 Centre (263-8)(- 7 o)(io6) (516) ("3) 49'53 2 JB, B 196 0-609 256-5 286-5 -13-8 "3 54' 63-415 JH, B 0-829 285-5 119-8 + 8-6 244 Feb. i 9 Centre (249'i)(-7-i) ("3) (54') (o) Mar. \ Centre (66-2)(- 7 -3) (o) (o) (244) Group 196, February lo-zz. Single large spot. Group 197, February 26-March i. Somewhat scattered group of very small spots. Group 198, March i-z. Single small spot. (IKKKSWH-II. AT IlAUYAUM AND AT Ml IN TIIK \K\: ID 1S77. 27 M.-.is:r. .lions :iiul Areas of Sun Spots anil Facula- mi Photographs cv,< ~ | l..,,,.^,,,,, on. 1 1 .,:,. Stan. KACDLJL Hvi.h llllS. il SC-3 sl c. C Oraeuwii h Civil 1 Q :.t:- ::. liua. 1 n aai 1 SI ^ o - _ii J f "se = "I Ei Tim.-. j i 1=2 "So a 1| i . 1 J8) Mar. 16 J i- litre 267-6) ] 7"') (62) (*45) (o) 66-4 10 0-865 *65"5 87-0 7'5 765 76-474 JB, n 199 0-512 15-3 184-7 -12-5 o '3 198* 0820 284-2 79-8 7 26 2OO 0-463 35-8 237-8 + I5-1 20 '54 0-842 69-2 333-0 + '.V* 201 2OI 0-635 91-4 2 14-6 - 6-3 57 220 (*6-7) (-7'*) (7) (26) ( 9 66) 101 0-818 tori 198-8 -13-2 i 18 Miir. 17 Centre 54*0 (-7-1 (78) (405) (o) 67-503 0-937 264-8 81-2 - 7'3 365 0-925 179-9 78-5 4- 6-3 189 77'S 1 ' JH, 11 '99 0-695 1588 284-6 -12-8 o 9 0-984 100-3 291-7 -ii-j 3' 100 0-J77 3577 241 3 4- 1 5 'o 1 6 56 Mar. 8 (i2'3)( 7-2; (o) (o) 2OI 0-429 89-5 215-0 - 6-. 43 '3* 2O2 0-630 102'2 201-4 13-1 o 10 103 0926 96-8 I72-I 8-9 3 121 68-425 JH, 11 0-984 265-3 80-2 - 5-8 244 Mar. 18 Centre ( 240-4) (-7-0) (61) (3*8) (o) 199 0-965 99'4 2847 10-9 '5 100 56o;> Mar. 9 I 4 (o-i) (-7-*) (15) (100) (804) 78-688 JH, II 200 0-446 324-6 240-3 + 14-5 * 57 2OI 0-170 89-2 ' 215-1 - 67 4' 121 I 9'545 199 0-872 99 -l 284-2 -11-4 18 86 $HP 203 0791 975 172-2 lO'l 48 11 9 *7*/ 0-977 268-5 4- 3'* 171 .Mar. 19 Centre (**4'9) (-7-0) (9) (408) (70) Mar. i o Centre (345-4) (-7'*) (18) (86) (4*3) 79'4 8 5 .in, B 100 0-545 307H 2407 4-13-0 5 50 1 70478 '99 0-744 990 284-7 -11-5 '4 66 17 Ox/' SOI 0-103 276-1 22O'2 - 6-3 16 48 0-908 81-4 269-0 + 3-8 '7' 203 0-641 95'7 174'* 9-0 40 '37 Mar. 1 1 Centre (333'') (-7'*) (4) (66) (44U 204 0-951 72-9 I450i4-I3-9 64 175 M:ir. 20 Centre (4'4) (-7-0) / t * f \ (So) (o) ft 7*'633 .in. i. 199 0-349 105-1 284-7 -11-9 18 58 100 0-92 1 70-2 241-2 4-15-' 45 52O>/ 80- 1 17 A.H 0-965 154-8 282-0 -16-5 3*8 0-926 99-3 236-3 1 1-3 79 100 0643 302-4 240-1 4 i4'4 3 30 Mar. 13 Centre (3o+7)(-7-> (63) (*73) (599) w. 201 0-140 272-4 119-7 - 6-1 5 18 J>IC* 203 0-471 93 8 177-9 - 7'9 9 5* 203 0-569 100-3 171-4 -i 1-6 5 38 73-560 JH, II '99 0-157 121 - 2847 -11-8 '7 57 204 0-800 653 157-5 4-15-0 7 37 '?*/ 200 0-827 64-9 241-4 4-16-1 49 176 52 + x/ 104 0-898 719! 145'* + 12-9 30 *5S 75"- 201 o 960 932 218-5 - 50 138 Mar. 21 Centre (206-1) (-6-9) (59) (440) (1151) ilar. 14 Centre (*9*'S)(-7-n (66) (233) (662) 8''534 JH, II 2OI O'8n 294-; 0-540 268-9 238-1 4 15-6 no'i 64 5 39* 16 H JH, II 199 0-125 234-4 *8j-' -"'* 10 37 203 0-216 9 ;- 3 174-9 - 79 '* 6 3 200 0-696 59-3 241-0 +15-2 4 i*3 20 4 0-661 57-9 1521 4-149 '57 512 199x7 2OI 0*903 93-5 *'4'5 - 6-2 8 7 5 6y 205 0-870 769 128-8 4- 7-8 8 14 8/ I ar. 15 Centre (*79'*> (-7-.) (50) (168) (756) Mar. 22 Outre ---6)(- 69X182) (615) (919) Group 198*, March 6-7. A few very small .spots not far apart, some of which disappear on March 7. Group 199, March 9-18. Single spot. Group 200, Msrch 13-21. Scattered group. A great i-lmige is si-rn on March 17. Group >oi, March 15-24. Small group, principally coiiM-ting of one spot, the smaller s|iot* disappearing on Mirch >o. liroup 201, Man-h 17-18. Siugle spot. Group 203, March 11-13. Scattered group. i iroup 204, March 20-30. Scattered group, consisting principally of two large spots. Group 205, March 21-1$. Single small sjiol. - 28 MEASURES OF POSITIONS AND AREAS OF SUN SPOTS AND FAUUL^E ON PHOTOGRAPHS Measures of Positions and Areas of Sun Spots and Faculse on Photographs continued. & i a 2 ' HELIOGKAPHIC SPOTS. FACCM. i s \ z { HELIOGKAPHIC SPOTS. FACVL.I-:. y j S in QJ *^ CO B - .c o as O, 3 .S S \ t~ t-i t~- 'r-. ~ Greenwich i ~ . 1 -* ~2 SB- C O Greenwich C O J* B^ S C Civil a QJ f! SJ 1) Bl ft Civil M o.l ' 1 li o-i- Time. $ il To a ">* 11" Time. jr il to f^ r^ +3 Si? I s CJ || O to | 0> 3 a CO "s ^, *"* c* c f ^ 2 i O " r ~ri ^ c 2 oj o _i. m "3 __^_ ^ ** 3 |3 *Sb I 3 J s4 j1l ll Si o^ P I | ji |i. AND Al MKIHurilNK. IS IIIK Yl-AH* 1874 TO 1ST? ii-i-.s nf Positions and Ari-.-is of Sun spots mul Kiimhi- on Phofbgnpha ^mtumed. Hi [.!>. i.Arim SMTH. i*. 1 W 111 Llui.llAMIl. GO SroTi, | a | $& 1 a 1 II 1 iiwich | H 11 K o *^ Greenwich CM 1 tt J II 31 Tune. f f J r II Tim* t Jl 1 Ij 5* l! y. i DM MI of Sun'i 2 < j ; i i 1 '. '.- ,1 . of Sun'i s \ Jll ;. 3 1876. 1876. O 1-682 M, II 208 0336 *59'3 4-11-7 6 65 Apr. 22 No Spots or Fac aim. 11. r. 12 (268-3) (-57) (6) (65) (o) t "3'597 JH, II 0-823 257-2 >79'3 -132 233 Apr. 23 Centre (124-1) (-47) (o) (o) (233) 103-051 H. V 208f 0'2I2 311-9 272-4 + 2-6 6 26 208 0299 12-4 *597 + 11-3 '5 Apr. 13 (263-4) (-5-6) (6) (40 (o) 114-404 JH, II 0-882 256-4 175-3 -14-2 35 Apr. 24 Centr.- ("3'5)(-4'6) (o) () (3S) 104-61 1 JB, 11 0-780 292-3 290*6 + 136 90 . 208* 0-361 94-0 221-7 - 6-5 la 46 115564 JH, H 0*908 295-0 159-3 4-20-4 103 0-925 101-8 174-8 -13-0 628 0-944 254-2 169-1 16-5 328 Apr. 14 t 'nitre (242-8H-5-5) 02) (46) (7 '8) Apr. 25 Centre (98-0(-4'5) (o) (o) (430 105-508 JH, II 0-867 289-2 2877 + 'V7 "5 1 16-032 H,A 0-982 293-8 168-0 4-224 6,3 208* 0-173 94-7 221-1 - 6-1 7 24 Me. 0-856 101-7 1-1-9 -12-8 377 Apr. 26 (9 1-9) ( 4-4) (o) (o) (6*3) 0-965 72-2 1587 4-15-6 160 Apr. 15 (231-0) (-5-4) (7) (H) (652) Apr. 27 i to No SpoU or Fac ulse. 106-55- 0-953 285-8 287-7 + 13-3 122 Apr. 19 ) 0-831 276-8 272-8 4- 17 168 208* O"022 191-3 2177 6-5 o 8 0-920 68-2 154-0 + 177 '34 121-420 JB.B 0-874 92-8 319-8 - 4'3 28; 16 iVntri- (2i7'4)( 5-3) (o) (8) (4*4) May i Centre (07) (-3-9) (o) (o) (*8 5 ) 107-662 0-946 *75'3 2729 + 3'3 396 122-527 JH, I) 0-947 74-0 296-7 + 13-8 80 11. 208? O-2O2 80-5 191-0 3-2 o 59 May 2 Centre (6-0 (-3-8) (o) (o) (80) '- Benin (202'5)(- 5-2) (0) (59) (396) 123-514 JB.B 0-867 72-2 295-2 + '3'4 o 218 108-558 JH, H IS 208* Centre 0-045 3*7-5 192-1 r-,'-. 1 , o '9 (9) (o) May 3 Centre (353-0 (-37) (o) (o) (218) 124-532 JH, B 0-807 72-5 288-0 -f n-7 46* 110-462 JU.B 0946 288-9 2 34" + >6'i '73 May 4 Centre (339-6) (-3-6) (o) (o) 0-839 263-7 222'S 8-0 166 0-867 93-8 105-3 - 5-8 168 May 5 No SpoU or Fac ulee. Vpr. 20 Ceiitrv (i6 5 -6)(- 5 -o) (o) () (507) 126-424 .III, II 0-964 103-4 240-1 -13-8 353 May 6 ('i.tre (3'4'6) (- 3'4) (o) (o) (353) III042 H, A 0-867 264-0 218-1 - 7'7 357 Me. Apr. 21 Centre <'57-9)(-4'9) () <=, (357) 127-589 May 7 JH, II 209 Centre 0-839 104-1 242-6 (299-2) -136 (-3-3) 67 (67) 229 (lit) Group zo8*, April 14-16. Group consisting mainly of one small spot Group zoSt, April ij. A short stream of small spot*. Group o8*, April 17-18. A small faint spot Group 109, May 7-15. Fairly Urge s|t, with a small one at a little distance, the latter almost disappearing on May 10. MKAHI/KKH OK I'OHITIONH ANH AKKA-; <>v SUN SPOT.-; AND KA<:I;I,,I; OH Ylr.iMircK (if I'asit.ioiKi and An-asof Sun SpotM ;md l'':u-ul,>- on I'hol if r;ipli:; run/ i n nnl '. 1 I | Sl'OTH. KM ! L, 1 1 H,,,,,.,,^,,,,, .Sl'OTH. 1 a 9 e IJ JJf f S S S J && OrHawlch -O S & <-l W-3 ,, Grpanwicli o z . & * ii-e c Civil 3 <3f V ii & Civil 3 5| Jl r-_ - gl ^ t' Urn* | 1! ". , *1 Bi 8-5 Tim.- ./ 1 1, 3 'f 2. 1 o *o 9 8 " '' I'l 1 1 a* 9 ]tl t*l Jl B o |"i Or/j ^ .2 |j 1-5 Tc g 4 z s 8 11 1 a ^ s f^ I J 5 5 X fc 1 J 2 f* l-i tl ^^ 1876. ,, p i o _ 128-468 .in, n 209 0708 105-7 2 43'3 ->3'3 5 176 280X/ May 1 8 ) May 8 1 'rnl.ri (287-6) (50) ('76) (280) In No SpDtH or Fai ale. May 19 } 129-483 .in, n 209 '539 IIPI 243-1 -> 37 34 158 140-596 ST, II 0-889 263-1 1897 - 7-0 o o 226 May 9 Centri ( 2 74' 2 ) '3-0 (34) ('58) (o) II. May 20 Centri! (127-2) (-11 (o) (o) (226) 130-463 .in, n 0-885 263-0 3 2 3'3 - 7-6 114 209 0-344 124-4 2 44'3 14-0 1 8 1 12 141-521 ir., l: 0-930 2 577 183-0 12-0 236 0-1/1. 96-7 i7'J 7' 2 208 M.n 21 Centn (i 14-9) (1'7 (o) (o) (236) 0-987 76-7 181-7 4 iz 7 208 May 10 Cintro (261-2) (28) (112) (530) 142-874 ST, II 'I'll* 1 255-0 175-6 -I5-0 901 11. 0-898 265-1 160-7 - 5'" '79 '3>'475 .in, ii 0-778 2 S8- 5 297-0 + 12-3 124 May 22 i lentn (97-o) (-'5 (o) (o) (10! ." !) 0-203 168-0 *45'3 -14-2 22 89 0-892 101-1 184-9 iri 2OO 0-924 74-6 182-0 413-1 '37 May 23 1 May 1 1 Centre (247-8) (-2-8) (22) (89) to 1 ( So Spoti i- l-'ai Ulffi. May 24 I 132-576 .in, n 0-898 285-7 2 95 - 5 411-7 218 209 0-294 224-9 245-6 -14-6 2 7 108 '45-S88 II, ST 209* 0-955 lOO'l 348-7 - 10-0 o 55 2"]6i 0*899 107-1 169-9 -16-5 '83 II. 0-807 70-5 182-0 414-0 156 May 25 Cclltrr (61-1) (-11) (o) (55) (276) May 12 Centre ( 2 33'3) (-2-7) (27) (108) (557) 146-639 II, ST 209* 0-849 100-4 349-6 - 9'3 o 3' 4 '/ '33'45' .Ml, II 0-960 2857 294-0 4i4' 2 128 II. 209 0-452 240-8 245-6 -15-0 22 1 06 May 26 Cenl.ro (47' 2 ) (-1-0) (o) (3.0 (401) 0-815 1 10-5 168-5 18-0 189 May 13 Centre (221-7) (-2-6) (22) (106) (3>7) 147-589 II, ST 209* 0-708 102-1 350-3 9-2 4 2 4 5 2 2 n/ II. May 7 Ci'.ntre (34-6) (-0-9) (4) (24) (5 22 ) 135-563 .111, i: 209 0-797 252-6 2 45'5 -15-2 O 9 I 8 OK/' May 15 Cent '937) (~ 2 '4) () (9) (i 80) May 29 I to ( f No ^pots or Fac da "36-S44 .III, II 0-889 281-3 242-4 4 8-9 ' 2 5 May 31 j 0-888 252-0 242-5 -17-0 4.6 0-929 96-5 iii-e - 6-8 129 May 1 6 Centre 1 80-8) -*'3) (o) (o) (670) 152-414 .III, II 0-862 262-8 29-9 - 6-3 "4 Inn.- I ( 'cntri) (330-8) (-0-4) (o) (o) ("4/ l '54'579 II, ST 0-909 II I'l 238-6 19-2 288 137-657 ST, II 0-969 253-9 241-5 -16-1 o o 729 II. 0-969 52-8 230-3 435' s 298 II. Tune 3 Centre 302'2)(-0'l) (0) (o) (586) May 17 Cmitrn 166-0) -2-,) () (o) (7 2 9) (!roup 201)*, May 2$ 27. A small group. IAKKS \i Qi I! \u\.\,. : HI 1877. Ml "f I 1 . ..f Sun SJM.H .Uhl K.MMil.-J- on IMnttn^r.ijili^ r../i/f/iu0A 1 M ,: Hi I.I.-..I.AI-MI Sron. LM. 1 1 i Id UIMIKAI-HK: Iron. 1 a - k. g a A I 1 c il II *-* Onenwh i. Cirll 1 $i B - ii 1 J je^- T.II . & 1 \\ i Bl II u Tim.. 1 II It h IS > ii : 1 . w co ' ill 3 i ; ofSon'a I 1 i i 1 ' jtl S o o 1876. 259- - 8-8 '3 178-580 H.ST not 0797 176-5 37-1 -I- 6-9 5 0-896 99-8 224-8 - 87 ii 11. 4 re (: (-r-o-o) (o) (o) (no June 17 Centre (344-4) ( + *7) (o) ($8) (o) 6 i N,, SpoU Blfl 179-586 II H, NT not not 0-937 175-7 0-903 275-0 40-5 35-6 + 6-3 + 57 8 47 [ l6 5 r June 18 Centre (33'-i) (+*"8) 05) (7*2) 0*5) 12 | No 16 1 SpoU or Fac nl.-i- 180-094 M-. II, A not not not 0-969 0-955 0-942 176-5 1767 175-8 40-1 37 i 348 4- 6-S .6 34 81 16 101 i 1 5 6 C June 19 Centre (3*4-4) (So) (109) (156) 169-463 HI, II 0-907 95-8 40-1 - 4-5 368 ^l 18 <'i-ntri- ('04-9) (+17) () (0) ( 3 68) June 30 No Sputa or Fc ih* 170-605 JH, ii 0767 96-5 40-3 - 3-8 169 184-599 JII, II 11 1 0714 150-6 308-0 1 I'! 16 64 n8e 19 (90-0) (+8) (0) (o) (i6 9 ) in 0-843 IOO-2 108-4 - 6-7 67 109 668/ July 3 Centre 1648) (+3-4) (83) (363) (896) 1-1 : 0-768 317-2 111-2 -417 *33 [20 (78-5) (+ i'9) (o) (o) (*33) 185-566 II, HT in 0-885 156-4 312-6 -10-3 o 3* ) in 0-8 1 8 153-8 304-9 - in o 11 > H4<- in 0-70 9 104-3 108 '* - 7'5 10 196 I71-440 JH, II 210 0-932 90 i 35- : + 0-6 o 40 7 8 3/' July 4 ( Yntro (151-9) + 3'5) (10) (150) (214) one 21 ( 6 57)( + *-o (o) (40) (783) 186578 H, HT 0-941 1561 307-5 -119 303 >7> IL -i 210 0-800 91-5 ; - 0-7 7 377/ II. 112 0-535 107-8 107-9 - 6 '4 14 138 II July 5 Centre (238*6) + 3-6) (14) 038) (303) 22 Centre ( 50-7) ( -f- 2-2; (7) () (377) 187-573 II, 8T 211 0-338 119-5 108-4 - 60 10 67 ;8o 11, UT 110 0-639 93-6 357-9 - 0-5 6 *5 11. *'4 0-870 81-4 165-1 + 9'3 o 56 i68/ II July 6 Centre (**55)(+37) (10) 0*3) (68) 23 l-'-Mitw (37-3) ( + 2-3) (6) (25) (o) 188-407 JII, II in 0-189 '494 108-9 - 5'5 16 65 2 13 0*544 95-1 181-7 -f- 0-4 o 10 175-689 ii. -i 110 0-416 97-1 358-4 - 08 21 *4 0758 80-4 165-3 + 97 1 1 4 6 3/ H. July 7 CMtN (214-4) (+3-8) 06) (86) (463) lune 24 Ontro (21-7) (+1-4) (o) (ii) (o) 189-463 JII, II 212 0-l87 124-0 111*0 -8-0 18 46 "3 0-308 lovi 183-0 0-3 11 73 43 "', 210* 0-470 247-6 2 ;; - 7-9 o 6 *'4 0-581 78-8 165-1 + 9'7 3 5 J ill.o 26 (359-6) (+1-6, (o) (6) (0) July 8 Centre ( 100-4) (-f- 3 9) (33) 0*4) (o) l^^Hl I 1 >'o, Croup no* Ormi|> no' [ in, 1' - l; . P 21 1. I 1 *M. June 21-14. Single unall pol. , June 16. A v. rjr miiall upot , June 17 19. A limit itn.iiii nfii|>U. July , 4. |Mitll. July 6 I. Sing!* miiall |pot. 32 MEASURES OF POSITIONS AND AREAS OF SUN SPOTS AND FACUL.I-; ox PHOTOGRAPHS Measures of Positions and Areas of Sun Spots and Faculse on Photographs continued. ,0 f. IlKLIOUUAl'Hlr Si'irrs. FAOULK. t f. I I HELIOGKAPHIC. SPOTS. FAC i i. >. b S 02 1 ~ Si 3 _g S II Cm 3 tz B .'$. ' C ~ Greenwich v 8 H . 1 < ,_ J H-B I C5 Greenwich "S 5 H-B o Civil s tf 1 ^j 5 Civil a 5 / O 3 " ^ ^ 2- sl Time. A si To s S* IS- I? Time. S 1 1? >* T > t 1 o * j "* 02 ^ ' t & Gj, J J- 02 ^ t. JP v 5 e . ,2 o ^^ ^ ^^ S , g c . 3 'S o ^ O ^i. O vi 1 o 1 = o _^ To 3 - *v * t ^ rt rt a "e. | '- X XI To ^ - 'u : S s 1 "* en o p (5 a 1 i| R ^ s ^-" -< i. - < K i& a o 5 1 5 -^ -= 1- S Q "3. 1876. o o o 1876. f , O o '9''545 JB, B 212 0-640 253-6 210-9 - 7-2 6 23 2.^11} 205-580 II. ST 217 0-586 117-4 3'5' 2 II-I 11 78 143^; 213 o'lSo 246-7 182-3 O'O i O 4 11. 0-910 99-8 282 8 - 6-6 582 July 10 Centre (172-8) ( + 4-0 (6) (27) (241) July 24 (347-i)(+ ; -4) (M) ( 7 8) ! (725) 1 192-575 H, BT 0-813 261-6 2I2'7 - 4'3 549 206-493 .11!. li 21- 0-437 128-1 3147 io-; 22 100 H. 213 0-473 258-0 186-7 i'9 o 25 0-8 u 100-9 282-2 - 5-5 293 July 1 1 Centre (I59-2) (+4-2) (o) (25) (549) July 25 Centre (335'i)(+5-5) (22) (1 00) (293) 193-496 JB, B 212 10-889 259-4 208-5 - 7-3 609 207-495 Jli, B 217 0-303 157-6 315-1 -10-7 '9 66 July 12 Centre (147-0) ( + 4'3) () (o) (609) July 26 Centre (32i-8)(+5- 5 )i (19) (66) (o) 194-589 JB, B 0-952 261-0 203-7 7-2 479 208-433 .Tli, I! 217 0-303 199-5 315-3 -u-o 1 16 42 July 1 3 Centre (1J2-6) (+4-4) (o) (o) (479) .luly 27 Centre ( 309-4) (+5'6) ! (16) (42) () 195-588 H, ST 0-926 265-0 186-6 2-9 138 209-587 H, ST 217 o-455 233-1 315-7 -10-5 O 17 H. 0-976 84-5 41-9 + 6-3 486 H. 0-969 94'4 219-1 2-8 220 July 14 Centre (+4-5) (o) <) (624) July 28 Centre (94'i)(+57) (o) (-7) (220) .July 15 No Spots or Fac ulae. 210-578 H, ST 0-919 418 H. 0-890 328 July 29 Cent iv (281-0) (-5-8) (o) (o) (746) 198-488 JB, B 0-968 279-0 156-8 + 9'8 188 July 1 7 Centre (8ro) (+4-8) (o) (o) (188) 212-116 H, A 0-970 261-7 335-5 - 6-5 226 217 0-846 2537 316-1 10-4 33 July 1 8 No Spots or Fac ulae. Me. 217 0-813 252-9 312-7 10 2 7 32 313?) 217 0-771 250-6' 308-3 I0'9 7 July 31 (Vhtiv : (26o- 7 ) (+5'9) (7) (7*) (539) 200-591 JB, B 215 o-8 3S 89-7 356-6 -j- 3*0 o 58 July 19 Centre (53-0 (+5') () (58) () 655 213-589 H, ST 0-946 2 56'3 310-4 10-9 H. () (655) 201-571 JB, B 215 0-690 9'"5 3567 + 2-6 6 36 Aug. i Centre (241-2) (+60) (o) 216 0-861 101-7 342-1 - 7'4 9 22 374/ July 20 Centre (40-2) (+5'o) (15) (58) (374) 0-835 258-4 284-1 - 6-3 260 214-514 JB, B (229-0) (+6-0) (o) (o) (260) Aug. 2 Centre 202-594 JB, B 215 0-493 94-5 357-3 + 2-3 o 8 216 0-711 105-9 343-2 - 7'5 4 2 73re/ 217 0-957 102-4 3'5-J -10-3 32 121 295;' 215-550 JB, B 0-946 261-2 285-2 - 6-3 '79 July 2 i Centre (26-7) (+5-0 (32) ('33) (568) Aug. 3 Centre (215-3) (+6-0 (o) (o) (179) 2^3-45' JB, li 215 0-304 98-6 357'9 + 2-4 o 9 Aug. 4 I? 0-884 104-1 315-0 - 9'9 23 102 i 39 1/ to No Spots or Fac ulae. July 22 1 Centre ('5'3) (23) ('") (39') Aug. 5 ' Group 215, July 19-22. Single small spot. Group 216 July 20-21. Single small spot. Group 217, July 21-31. Single spot. It is not seen on July 29, but a number of spots in a short stream mark its place on July 31. TAKEN AT GREENWICH, AT HARVARD, AND AT . IN I UK YEARS 1874 TO 33 Mfusures of Positions and Areas of Sun Spots and Faculie on I'hotoijniplis n.- 1 i HKLIOUKAPIHC SPOTS, FACCLJL J i i HiKAPIIII- Spur*. UL | A . |J B, a | a v e. - | j E 1 1 ii WII'il.K pot (and O 1! Greenwich Ciril Time. 1 Ij I SI co- if p 1! 1 "*"j* it a o a ' 3*3 I! | Latitude. A jtl *.> ill $ | J 11 |n i Latitude. < 1 i o O 1876. o o o ; 460 JB, B 0-865 261-8 212-5 3 '8 161 135-403 JB, B 110 0-367 140-1 299-1 - 9'4 12 40 218 0-908 178-1 119-1 -f-IO'I o 87 Aug. 13 Centre 312-9) + 7'l ) ('*> (40) (o) - - Centre (163-6) (+6-4) (o) (87) (*6i) 137-586 .in, 11 220 0-406 227-1 301-5 - 9'* 34 97 Spots or Fac ulee. 0-863 103-7 126-3 - 8-0 271 Aug. 25 Centre (i8 4 -o)(+ 7 -i) (34) (97) ("70 JB, II 095' 256-8 206 9 -10-4 '49 9 Centre (136-9) (o) (o) ('49) 238739 si, ii 0-798 248-0 318-0 -12-8 214 H220 0-646 244-2 304-9 10-6 7 65 . 220 0-559 241-1 198-4 - 9'5 o 18 10 | Aug. 26 Centre (+7-') (7) (83) (*'4) Spots or Fac uln. ii 1 240-588 -i. H 220 0-893 254-3 305-1 105 o 4 H. 220 0-856 252-9 300-5 10-6 7 49 459 C 4 No Spots or Fac ula. Aug. 2 8 Centre (*44'4) ( + 7'*) (7) (89) (459) 663 II, ST 0-913 103-8 351-3 - 9-6 218 241 481 JB, B 220 0-943 256-8 300-9 - 9'9 o 27 466;) II. Aug. 29 Ci-ntrp (132-6) (+7-2) (o) (27) (466) '; Centre (55-0 (+6-8) (o) (o) (til) 242-582 ST, II 221 0-424 141-7 202-5 12-4 o 30 228-499 JB, I) 219 0791 105-9 354'' 8-1 o 4' H. 221 0465 1392 199-9 -13-7 8 20 Aug. 1 6 Centn- (44-0 (+6-8) (o) (o) Aug. 30 Centre (118-0) ( + 7-*) (8) (50) (0) 129-465 JB, H 219 0-651 109-5 353-3 - 7'* 46 '*7 *43"45i JB, B 221 0-374 I62-I 199-8 -13-6 14 44 17 (+6-9) (46) 0*7) (o) Aug. 31 Centre (io6- 5) (+ 7 -2) (14) (44) (o) 130-681 ST, H 219 0-440 121-8 353'* - 7-0 9 i ii *44'599 JB, B 211 0-393 207-9 2O2 2 -13-1 , 7 , 7 , H. Sept. i Centre ('9''4) (+7-2] (17) (70) (o) 18 Centre (5-3) (+6-9) (9) (in) (o) 245649 221 0-538 232-1 203-3 -12-8 150 23I-686 ST, II 219 0-289 148! 353"' - 7'4 10 80 H. 221 0-493 228-0 '99'5 -12-6 o 39 II. Sept. 2 (177*5) (+7-*) (o) (189) (o) 1 9 Centre (9) (+6-9) (10) (80) (o) 247-588 0-989 259-6 231-8 - 9'' 714 21 Xo Spots or Fac nice. 221 0-8 1 6 147-1 201*5 -14-0 o 7* . 221 0-768 145-8 197-8 -'34 1 1 5 2 3'" Sept. 4 Centre (151-9) (+7-*) (o) (8 3 ) <'*37> *3< ST, H 220 0-472 124-6 300-5 - 9' 1 4 45 248-582 JB.B 0-948 266-8 2097 - 0-6 i;i H. 221 0-890 250-9 198-4 -'3-3 9 6o8n// ' .. 22 ( 'entre (3*3-6) (+7-o) (4) (45) (o) J (Vntr, (138-8) ( + 7-3) (0) '9) (760) Group ziS, August -. Single small spot. Group 219, August 16-19. Two spots. Uroup 2ic, August 11-19. Only one spot a seen at first, but a second of equal size i August z$. Group 211, August 30 - 5. Two small spots, one of which breaks into >mall fr.iiMnenU on September i, and finally disappears on September 5. PHOTO-HKLIOGRAPHIC RESULTS, 1874-1877. MEASURES OF POSITIONS AND AREAS OF SUN SPOTS AND FACUL^E ON PHOTOGRAPHS. Measures of Positions and Areas of Sun Spots and Faculae on Photographs continued. 1 V. -* HKLIOGKAPHIC SPOTS. FAOUIA 1 HELIOGUAPHIC SPOTS. FACI-I. ' . b J> OQ 5 S tn I a o S.3 ~> P. | 3 a i g && ' t-> 5 Greenwich i o Cl .>.- B-a 3 jreen\vich rs a a . H ) (19) (1 06) (o) 277-544 B, B 224 0-700 257-0 159-5 - 4'4 39 180 261-440 JB, B 222 0-947 279-7 41-0 + 11-4 31 149^ Oct. 4 Centre (n6-5)(+6'4) (39) (180) (o) 223 0-303 162-1 323-6 - 9-6 33 126 Sept. 18 Centre (329-0) (+7-0 (33) (157) (H9) 278-443 JB, B 224 0-828 260-2 159-4 - 4'4 46 172 353s/ 264-529 JB, B 0-942 92-2 218-3 + '3 670 Oct. 5 Centre (1047) ( + 6-4) (46) (172) (353) Sept. 21 Centre (288-2) ( + 7-o) (o) (o) (670) 265-445 JB, B 0-866 93-4 216-6 + 0-6 861 279-565 JB, B 224 0-942 263-4 J 59"3 ~ 4' 1 34 131 405^' Sept. 22 Centre 0-958 109-6 2o6'2 (276-2) -16-3 (o) (o) 1 66 (1027) Oct. 6 Centre 0-980 1037 13-3 (89-8) 12-0 ( + 6-3) (34) 105 (13') (57) 268-089 II, A a- 9 68 85-2 165-4 + 6-4 204 Oct. 7 No Spots or Fac ulit. Me. Sept. 25 Centre (24^3) (+6'9) (o) (o) (204) Oct. 9 ) 269-091 H, A 0-967 98-3 I54-I - 6-2 201 to \ No Spots or Fac ulse. Me. Oct. 10 j Sept. 26 Centre (228-1) (+6-8) (o) (o) (201) 270-586 H, ST 224 0-797 102-8 I57-I - 5'9 39 43' 4IOC H. 284-559 JB, B 225 0-298 159-0 17-7 IO'2 2 18 Sept. 27 Centre (ao8-s) (+6-8) (39) (403) ( 4 IO) Oct. 1 1 Centre (23-9) (+6-0) (2) (18) (o) I Group 222, September 18. Single spot. Group 223, September 14-18. Two small spots. Group 224, September 27-October 6. Two spots of nearly equal size, of which the preceding spot grows larger and the following spot smaller on October 4 and 5. Group 225, October 11-18. Scattered group. TAKEN AT < f KEKNWICH, AT 1 1.UtVAIlK, ANH AT MELBOURNE, IN 1IIK VK.MIS 1874 TO 1877. 35 Mfiisures of Positions and Areas of Sun Spots and Faculte on Photographs continued. "i SPOTS. I g a HKLUMIHAI-IIK Sron. LX. g so 3 J3 E | as 3 j| I II 5 O. 1 !> 31 11 Greenwich Civil 1 Is m gl 11 O i < - -r *Q Time. 1 ;] a 1 .. s~ " - -' o ? -! 8s 3 s |j K 4 1 LitituJe. < i :L ! P Distance f: of Sun'a j! | 1 | |ll jll IJ 1876. O o 1876. O O ^498 JB, B **5 0-301 198-8 17-1 10-6 *9 99 299-049 H,A 226 0-507 235-2 217-9 -12-4 '7 79 '977 94-0 294'5 - 2-5 141 Me. Oct. 12 lYntn- Ci-6) (+5-9) (*9) (99) Oct. 26 Centre 192-8) (+4-8) ('7) (79) (o) ,89-052 H,A **5 0-822 *S3'9 17-8 _ 9-8 35 '95 300-080 H, A 226 0-674 245-6 218-1 -12-5 "7 95 Me. Me. Ocl 16 Centre (3247) (+5-6) (35) (95) (o) Oct. 27 Centre (79'3) ( + 4-7) (-7) (95) (o) 290-468 JB, B **5 0-961 '945 258-6 90-8 18-5 *347 - 9'4 + '-o '44 694 554C 150 Oct. 3 1 to ! * Spots or Fac ulae. t . i - Centre (306-0) (+5-5) (144) (694) (704) Nov. i 1 291-070 H,A 0-937 89-6 228-7 + t-4 395 306-648 H, 8T 226* 0-666 281-9 134-0 -r-IO'9 .6 82 Me. S 0-991 2 S9' '8'9 I o-o '4 33' 8370 226* 0-598 283-1 128-8 +11-0 18 61 Oct. 1 8 Centre (298-1) (+5-6) (14) (331) (1232) . No*. 2 Centre 0-945 102-9 23-1 (92-6) -10-8 (34) (H3) 5*7 (5*7) 292-469 JB, B 226 0-907 107-6 217-1 -'3'4 62 308 627.'" 0*821 92-1 224-6 '54 307-752 H, ST 226* 0-846 *79'5 135-8 + 10-2 *5 '74 1 0-894 91-6 216-6 + 0-9 58 226* 0-806 281-0 131-6 + ii-i o 27 333<= 'a. 19 Centre (179-6) (+5-4) (62) (308) (839) H. 226* 0765 2806 127-8 +10-6 4 70 1 0-819 102-7 24-5 - 8-1 377 Nov. 3 Centre (78-i)( + 3'9) (29) <70 (7'0) 293-083 H, A 226 0-826 109-3 218-7 '2-7 16 163 Me. 226 0-878 1077 212-7 '27 10 107 57 f 20 Centre (*7'-5)(+S-3) (26) (270) (507) 308-664 H, ST 226* 226 0-946 0-881 279-7 280-1 137-2 +10-4 127-7 + '7 36 138 34 } 38* C H. 0964 '347 0-7 -41-2 292 Nov. 4 Centre (66-0) (+3'8 (36) (172) (674) 294-079 H, A 226 0-688 114-5 218-7 12-6 16 121 Me 226 0756 112-4 212-7 >3"' '7 65 226 2 1 Centre 0785 iii-i 209-6 13-0 258'4)(-(- 5-2) 6 (39) 48 (*34) 39"' (39') Nov. 7 to | No Spots or Fac obe. Nov. 8 1 220 Me. H, A 226 226 0-363 0-430 145-0 217-9 -'2-4 212-3 -'3'' 22 O '3' 38 3'3'S72 Nov. 9 JB, B 227 0-876 Centre 98-8 301-1 (4) - 6-1 (+3'*) (o) 28 (>8) 202;) (202) 226 0-470 131-3 209-0 13-4 8 7* *3 Centre '23O'2)(+ 5'O' (30) (*4) (o) Nov. i o No Spots or Fac ul*. 298-193 II. A 226 0-378 217-8 2I7-9 -12-6 24 102 f f Me. Oct. :: 226 226 Centre 0-369 0-328 213-6 195-0 2l62 209-2 (204-2 -13-1 -13-6 K + 4-8 o o (H) 6 8 ("6) (o) H. Nov. 1 3 . -T 227* 0-810 228 0-925 Centre 98-3 88-4 254-0 240-0 (307-5) - 5-0 + 2-6 (+2-9) o 66 o 84 (o) (150) 3676 (36;) Group 226. Octolwr 19-17. One large spot and two or three small ones. Group 226", November 2-4. A stream of spot*. Group 227, November 9. Single spot. Group 227*, November 13. A group seen only near the east limb. Group 128, November 13-16. Single spot. 36 MEASURES OF POSITIONS AND AREAS OF SUN SPOTS AND FACUL^E ON PHOTOGRAPHS Measures of Positions and Areas of Sun Spots and Faculse on Photographs continued. $ I '= HEUOGRAPHIO SPOTS. FACUUB. J! rfi I "c IlEUOUKAI'HIC SPOTS. FACUUH B B o -*- a to 1 S ^a >- k, k> t- J-. Greenwich 3 1 a 1 Greenwich T3 i ~G en 1 H- ^ Civil 31 V 1 -!. Civil a! _2 a J. o-i "i Time. 9 1! *bic c S-s" K -s 5 S> Time. a fl a ^ So iiS d 2 ^ d * B, r^ C* * k, d z * to & 3 o l fl , .2 -S3 1 a! J "^a^ CO <* * 1 *s "S II .2 -22 a 3 1 "^I'S ^^^ *^ 2 ' 'x M o 9 rt '& 2 jj 1 & "S o Q r 3 1 | S |Sn |i 1 jr J UH .2 <= O c 1 1 S n g s- 2 - 1876. , o o 1876. O 318-582 JB, B 228 0-819 90-1 240-5 + !-; 34 125 igop 347-561 JB, B 0-799 104-8 221-3 -12'3 287 Nov. 1 4 Centre (295-3) (+2-6) (34) (25) (190) Dec. 1 3 Centre (273-4) (-1-0) (o) (o) (287) 319-518 JB, B 228 0-674 91-1 240-8 + 1-2 17 65 352-045 H, A 231 0-940 78-5 145-2 + IO-2 53 2 5 8 3 8 9 c 22g 0-896 104-4 220-8 -ii-6: 57 i59 282*7 Me. 2296 0-929 102-7 216-9 -10-9 37 126 Dec. 1 8 Centre (24'3) (-1-6) (53) (258) (389) Nov. 15 Centre (283-0) (35) (282) 353-248 H, A 231 0-825 76-5 144-2 + 10-1 49 394 320-497 JB, B 228 0-490 92-3 240-9 + 1-0 6 3 Me. 22ga 0779 107-5 220'g -11-9 36 132 Dec. 19 Centre (198-6) (-17) (49) (394) (o) 229^1 0-839 104-6 214-5 -10-8 25 87 Nov. 1 6 Centre (270-I) (+2-4) (6 7 ) (249) (o) 354-116 H, A 231 0-696 73-5 144-4 + 10-8 66 402 322-080 H, A 2290 0-508 II&-I 221-5 -10-9 13 62 Me. Me. 2296 0-603 >""4 214-4 10-7 6 44 Dec. 20 Centre (187-0) (-,-8) (66) (402) (o) Nov. 1 8 Centre (249- 1 ) (+2-2J (19) (i 06) () 323-493 JB, B 22g 0-271 H5 ; 6 221-5 10-8 27 102 355-103 H, A 23' 0-513 65-5 145-8 + 10-6 42 150 2296 0-364 128-4 213-6 i ro 15 59 Me. 230 0-954 260-9 302-3 - 8-0 o 26 349 W / Dec. 2 1 Centre (174-0) (-9) (42) (15) (o) Nov. 1 9 Centre ( 23 0-6) (+2-1) (42) (187) (349) 324-097 H, A 0-977 261-8 299-6 - 7'5 242 356-549 JB, B 231 0-273 37-o 145-4 + 10-5 89 667 M H 2290 0-224 !77'3 222"O i 0-9 8 46 Dec. 22 Centre (i55-o) (-2-1) (89) (667) (o) f. 2296 0-269 147-1 2I4-I I I-O o 1 7 Nov. 20 Centre (222-6) (+2-0) (8) (63) (242) 357-066 H, A 231 0-224 1 1-9 45'5 + io'4 44 274 325-021 H, A 22ga 0-304 222-0 222'3 in 4 46 Me. Me. 2296 0-226 196-0 214-0 10-6 21 Dec. 23 Centre (148-2) (-2-2) (44) (274) (o) 0-954 80-0 138-6 - 8-9 280 Nov. 21 Centre ( 2 1 0-4) (+i-9) (4) (67) (280) 361-020 H, A 231 0-779 285-2 1457 + 10-0 ' 85 501 Me. Nov. 28 No Spots or Fac ulse. Dec. 27 Centre (96-1) (-27) (85) (501) (o) 333-477 JB, B 0-956 102-8 26-8 12'0 1 86 Nov. 29 Centre ( QQ'o) (+0-8) () (o) (186) 363-053 H, A 231 0-973 280-7 145-1 + 97 103 3/8 Me. Dec. 29 Centre (69-4) (-2'9) (103) (378) (o) 340-463 JB, B 0-9 15 99-8 301-3 - 9-0 136 Dec. 6 Centi-e (6-9) (-0-1) (o) (o) (136) Dec. 30 No Spots ur Fac ulse. 4 Group 229, November 15-21. Two spots of nearly equal size. Group 230, November 19. Single spot. Group 231, December 18-29. Single spot. TAKKX AT GREENWICH, AT HAI;VAI;I>, AND AT MELBOURNE. IN TIIK YEARS 1874 TO 1877. 37 M. .i-ui. - : I'.'.-iti. .n- .ui'l Areas of Sun SJHOS and Facula on Photographs conttn, i nCLIlXiKAniK- SPOTS. & | "i HKLIOOKAI-HI. 8]*OTVt FACTO LA i I h m i e s u 5 ~ 3 a B e II II a Onenwich m 41 JS 11 II (ireenwich Ciril 1 A ii il O a Time. | 1 ft "il" Time. (S ll I Ij *! la | t of Sun's Jj jf 3 1 hi f O -i. |J| i J 1 V Jen |l | Utitude. J 1 O 1877. O o Jan. 3 16-089 H,A 2320 0-371 310-6 195-1 + 9-3 40 166 to N,. Spots nr I-'acuhu. a*_ 33 0-571 63-6 I47'S 4-10-5 53 363 Jan. 5 me. 233 o 614 58-6 146-1 + 14-5 o '4 Jan. 17 Centre 1787) (-4-9) (93) (543) (o) 5'0>: 11. A 2 3 1 0-777 77-9 274-2 4- 6-9 o 42 23'* 0794 8o'o 272-3 4- 5-6 o 16 17-049 B, A 2320 0-537 2965 I95-0 + 9'5 27 181 I Jan. 6 Centre (323-9) (-3-8) (o) (58) (o) Me. Jan. 18 2330 Centre 0-410 50-1 '47'4 166-0) 4-10-4 (-5-o) 42 (69) 367 (548) (o) 7-048 II, A IJI1 0-539 2-7 166-7 + 5-8 18 1 iS 041 H, A 2320 0-698 189-2 194-8 + 9-5 39 119 Jan. 8 (*977)(-4') (o) (18) (o) MP 233< 0-297 2O'O 147-1' 4-U'i 7 360 .! o. 2-U 0-369 21*2 145-1 4-15-0 o ii Jan. 19 Centre (56) (59') (o) 8-068 H, A sit o-345 59'' 167-1 + 6-3 8 M. Jan. 9 Centre (284-3) -4-') (o) (O (0) 19-050 H,A 2320 0-840 184-9 194-8 + 9-6 29 116 Me. 2330 0-309 333'5 147-6 4-10-9 10 101 Jan. 20 Centre (139-6) (-5-2) (49) (418) (o) 19-068 H, A 232* 0-465 260-0 298-6 - 84 o 20 132* Jit 0-426 259-6 O-lgi ; 21-6 296-0 267-1 - 8-3 o 29 + 5'8 o 47 I 1 IS H.A 2320 0-992 280-3 193-9 + 9'5 56 207 459* V. 0-967 79-4 197-1 + 9'' 51 280 1 *33a 0-630 *95'3 147-8 4-II-2 ll '33 232 0-990 81-2 190-2 4- 8-1 6 95 J Me. 233 0-610 193-0 146-9 + 9'3 9 j Jan. 10 Centre (271-1) -4-3) (57) (47') (35) .lull. 22 233 Centre 0-608 297-9 145-6 ("2-4) 4-12-0 (-5-4) o (74) 9 (358) (459) 10-243 11, A 2 3 2 O-7O2 261-6 300-2 - 9'' '9 Vf. sit 0-653 0-277 262-7 311-6 296-4 - 8-1 + 6-3 o o *7 59 22-5OO .Ian. 23 JB, B Centre 0-824 288-2 147-0 (94-3) 4-M-6 (-5-5) 16 (16) 88 (88) (o) .Me. 2320 0-87I 77-6 196-6 4- 8-5 38 1 80 Jan. 1 1 232 Centre 0-930 79-0 188-6 (2557) + 8-5 (-4-4) (38) 76 (36') 2 95 C 095) 23-536 Jan. 24 JB, B Centre 0*926 185-1 146-3 (80-6) (-5-6) 7 07) 86 (86) i8 3 n/- (283) 11-052 lie. H, A 2320 232 0-776 0-848 7 7 l\ '95'9 188-6 4- 8-5 35 190 1 4- 8-9 o 30 / " Ic 24-064 H, A 1330 0-966 283-9 146-8 4-11-9 o ,56 5 i6/ Jan. 12 Centn (245-0 (-V5) (35) (220) (221) Me. Jan. 25 Centre (73-6) (-5-6) (o) 05 6 ) (516) 12-036 II. A 2320 0-631 70-6 195-2 + 8-4 19 172 Me. 232 0-7II 72-4 188-8 4- 9-1 o 25 Jan. 13 (2320 (-4-6) ('9) 097) () Jan. 26 M.M 234 Centre 0-710 94-6 9-0 (54-3) - 7'3 (-5-8) (o) 28 200C (200) 14-58; JU, H 0-903 285-5 261-0 4- 1 1-8 192 2320 0-247 14-6 194-9 4- 9-0 55 2'5 26-024 *, A 234 0-626 94-8 9-0 - 7-5 ii 233 O'SOO 72-7 '477 4-10-8 75 325 706?;; Me. Jan. 1 5 Centre ( 9 8-5)(- 4 -8)(i 3 o) (540) (898) Jan. 27 Centre (47-8) (-5-8) (0 (") () Group 131*, January 6. Two small spots. Group 131!, January S-n. Onr or two spots, mostly small. Group 231. January 10-12. One regular -pot, a, usually with a small corn] union. Group 132*. ' .uiuaiy 10-1 1. A short stream of s >ots. Group 133, January 15-15. One regular spot, a, usually with one or two small companions, a preserves its form, but decreases in >'w as it crosses the San. Group 234, January 26-17. One small faint spot. 38 MEASURES OF POSITIONS AND AREAS OK SUN SPOTS AND FACUL^E ON PHOTOGRAPHS Measures of Positions and Areas of Sun Spots and Faculte on Photographs continued. Jl m i OT a HELIOGRAPHIO SPOTS. FACUL.K S f. HKMOUKAPHIC SPOTS. FACULA i $ a m 1 d A h b ' t p - , t- - ^ z Greenwich B H 1, a & << 1 o Greenwich a i ^ 1 -- ^ t-J. c Civil &3 00 -S. O ^ -> Civil o ** ~ ^, o -5- ^ Time. m cC | K *& V S- S~ PS, S. ]4 Time. ri M ^ 9 H """ "? "~- B *4 8 M S M 1 '& i O _j -""^ O _, '""*' sl^ ~- o a I 1 C5 l"i a* c O w ji 1 f & ~ ~* *>* **" iz a "3 = s o ro en o -" a ' gSo Sgo g-S- o jJOC "5 "3 'S < = ' SO S So s fc 3 a .3 5 < nwich Civil 1 Jj ^ i! u-o P x~ Time. f i! I Ij h 1! Time. A ji I qj O Si 4 | 4 "S ,i. "s 00 -*. & ^J si 4 4 *",. o ^ S 31 I 1 jll jll ^ , f 303 J-s r I 3 J < jll I 1 1877. O 1877. o O I Mar.' 10 .III, I: *37 Centrp 0-910 262-6 273-6 - 9-8 (-7-2) O (o) 4 (40) 238/ (238) 89-427 M;ir. 31 JB, B Centre 0-775 294-8 339-0 (292-6) (-6-5 5 ) (o) (o) 108 (208) I Mar. ,4 No Spots or Far ul. 93'57> JB, B 0-946 261-3 309-5 -10-3 *7J 0-931 284-0 304-5 + io-6 307 ! 0-951 177-0 224-4 -777 156 Mar. 16 No Spots or Fac Uhl-. Apr. 4 Centre ( 2 37'9) (-6-3) (o) (o) (7J6) 75-481 Mar. i- JB, B 238 Centre 0-211 2 497 128-0 (116-4) 1 1-1 -7-D (5) 39 (39) (o) 94-564 Apr. 5 JB, B Centre 0-952 279-0 295-7 (224-8) + 6-6 (-6-2) (o) (o) 354 (354) 76-399 Mar. 18 jn, i! 238 Centre 0-424 258-5 129-2 04'3) I I'2 (-7-0) 46 (46) '97 (197) (o) 95-500 Apr. 6 JB, B 2 39 Centre 0-982 101-7 132-5 (212-4) -i*-6 (-6-1) 8 63 (63) 207C (207) 77-562 JB,B 238 0-648 261-0 129-6 in 39 261 96-460 JB, B 0-914 286-0 263-4 + 12-0 I'M Mar. 19 Centre (89-0, (-7-0) (39) (.61) () Apr. 7 2 39 Centre 0-917 101-4 1327 (1997) -l2- 9 (-6-0) 3 (3) 34 (34) 445^ (569) 79-169 H, A 238 0-888 261-2 131-0 n-o 17 151 320C Me. 238 0-865 259-7 128 ' 2 12-4 o 18 Apr. 9 No Spots or Fac ulae. 238 0-827 261-1 124-0 11-3 8 69 Mar. 21 Centre (6 7 -8)(-6- 9 ) (25) <3*) Apr. 1 1 No Spots or Fac ulae. 8o- 4 6; JB, B 238 0-985 2 59> 131-8 -11-6 5 "73 373".'' Mar. 22 Centre (507) (-6-9) (So) ('73), (373) 101*409 Apr. 1 2 JB, B Centre 0-877 267-0 195-8 (34-4) (-5 5 7) (o) (o) 140 ('40) 81-503 JB, B 0-894 75-4. 335-9 + 9-8 2 37 0-977 97-4 318-8 - 8-7 39 1 Apr. 13 Mar. 23 Centre <37'')(- 6-9) (o) (o) (628) to No Spots or Fac ulae. Apr. 14 182-474 JB, B 0-926 96-3 316-0 _ 8-4 73 Mar. 24 Centre (24-2) (6-8) (o) (o) <73) 105-123 H, A 240 0-387 242-4 106-1 -IS'4 33 216 \t rt 240 0-323 241-2 102-3 -14-1 6 118 85-561 Mar. 27 JB, B Centre 0-928 100-2 274-7 (343-5) 12-0 (-6-7, (o) (o) 446 446* All'. Apr. 16 Dentre 0-302 2 33'4 99^ (85-4) -15-6 (-5-4) 8 (47) ( 3 6 3 8) (0) Mar. 2* 106-476 JB, B 0-909 2 S77 133-2 -'3'4 211 to No Spots or Fac alee. 240 0-614 252-2 104-5 15-0 70 401 Mar. 29 1 Apr. 17 Centre (67-5) (-5-3) (70) (III) Group 238, March 17-11. A scattered group of ill-defined spots, which gradually con.lensrs into two well-defined spots. On March zi one of the spots has gone off the limb, and the other is only partly visible. Group 239, April 6-7. One small well-defined spot. Group 140, April 16-10. A group composed of three spott, of which the smallest gradually disappears. 40 MEASURES OF POSITIONS AND AREAS OF SUN SPOTS AND FACUL^ ON PHOTOGRAPHS Measures of Positions and Areas of Sun Spots and Faculae on Photographs continued. & 1 HBLIOGRAPHIC SPOTS. FACULE. & m G HELIOGRAPHIC SPOTS. FAC-ULA:. . B 1 a 01 k 1 Greenwich A ta NJ 1 S & < 81 Civil d 3| aj is! ol Time. m i 1*5 1 d PS. It IG Time. 35 | II bo a rf a l K ^ PS. PSJ. ~Z ft S g o |"s (3 1 ai t * a 2 __.. ! <- m ^ fe2 83 % 1 ri ~ m ^ *" ^ o *~ J. o l'| -*j 'Sc i 1 ill" 11 |1 1 ! IS - W2 01 2.2 .-a *J X SC 5 ** *- >-> "* . f "! '-. 2 * 3 fc Q PL, )-.) M ^ < < '' % Q S, & ^ < < < 1877. O o o 1877. o o 108-523 JB, B 240 0-891 256-4 103-6 -I4-4 58 3 2 337/ 122-428 M, B 243 0-571 12-4 208-6 + 30-1 13 48 Apr. 1 9 Centre (40-4) (-5-0 (58) (3o 2 ) (337) May 3 Centre (216-7) (-3-7) d3) (48) (o) 109-470 JB, B 240 0-966 257-0 '03-4 -13-9 56 243 355/ 123-516 M, B 243 0-56, 350-9 208-1 + 29-9 o 32 241 0-705 84-4 343-6 + 0-4 4 4i 3i9 ra 244 0-259 2 "3'5 2I 7" 2 2 '6 12 49 0-971 79'6 313-0 + 8-8 H5 May 4 Centre (202-3) (-3-6) (12) (8l) () Apr. 20 Centre ( 2 7'9) (-5-0) (60) (284) (789) 124-447 M, B 244 0-491 272-3 219-3 - i'9 10 31 112-408 JB, B 241 O-I22 177 347-0 + r 9 27 137 May 5 Centre (190-0) (-3-5) do) (31) (0) 242 0-720 96-1 303-1 - 7-6 21 73 Apr. 23 Centre (349'0 (-47) (48) (210) (0) 126-414 M, B 0-799 312-3 206-9 + 30-0 229 244 0-838 270-1 i 220-7 - '7 4 II 1257 113-423 JB, B 241 0-241 299-8 3477 + 2-3 23 69 245 0-871 104-5 ; 103-8 -14-2 35 151 230S/ 242 0-534 96-8 303-5 - 7'5 II 41 May 7 Centre (164-0) (-3-3) (39) (162) (584) Apr. 24 Centre (3357) (-4-6) (34) (no) (o) , 127-4! I M, B 0-891 306-5 206-5 +3"' 191 114-417 JB, B 241 0-447 28^7 348-I + 2 '4 20 68 244 0'943 269-1 22I-I I'9 20 242 0-303 IO2'6 305-3 - 8-1 16 48 245 0-743 loo'3 103-7 -I4-2 31 139 2 I 5-s/ Apr. 25 Centre (322-6) (-4-5) (36) (116) (o) 0-948 80-2 80-3 + 8-2 230 May 8 Centre (150-8) (-3-2) (30 (159) (838) 1 16-560 M, B 241 0-823 277-4 348-9 + 3-6 23 3 in;/ 242 0-285 261-5 310-6 - 6-6 13 56 128-455 11, B 0-962 302-5 206-5 + 30-1 207 Apr. 27 Centre (294-2) (-4-3) (13) (79) (311) 0-925 263-9 204-7 - 6-9 129 245 o-573 1 10-6 103-6 -14-1 17 61 246 0-823 77-9 82-9 + 8-2 ii 35 ig6/ 1 17-062 H, A 242 0-396 263-0 310-8 - 67 o 33 May 9 Centre (137-0) (-3-1) (28) (96) f53 2 ) Me. 0-973 101 -o 2 IO 6 -11-7 260 Apr. 28 Centre (287-6) (-4-3) (o) (33) (2601 129-469 M, B 245 0-388 120-3 W5 -14-0 '9 68 246 0-676 74-1 82-6 + 8-4 30 107 II9-554 M, B ^42 0-893 246-4 318-0 - 6-8 1 1 33 4 68/ May 10 Centre (123-6) (-3-0) (49) (175) (o) |243 0-827 50-9 207-8 + 28-6 2 5 1 36 n/ Apr. 30 (pentre ( 2 547) (ii) (58) (604) | 130-591 M, Ii 245 0-213 155-8 103-6 14-0 14 61 246 0-439 64-3 85-31+ 8-3 26 139 120-107 H, A 0-853 264-4 305-9 - 6-9 221 May 1 1 Centre (108-7) (-2-8) (40) (200) (o) 242 0-947 263-4 318-6 - 7'5 o 28 Me. 243 0-768 46-5 208-0 + 28-8 o 47 May i Centre (247-3) / \ ( ~~ J.' O I \ T / (o) (75) (221) I34-549 M, B 246 0-526 291-2 86'o + 8-8 23 105 May 1 5 Centre . (-2-4) ( 2 3) ('5) (o) 121-075 H, A 0-946 264-7 305-6 - 6-3 223 \,f H3 0-659 33-3 209-9 + 29-8 o 27 135-093 H, A 246 0-619 287-1 85-8 + 8-6 1 1 9 JVle. Z 43 0-681 38-1 205-9 T 2 8"9 4 4i Me. May 2 Centre ( 2 34-5),(-3'9) (4) (68) ( 22 3) May 1 6 (49' 2 ) (-2-3) (ii) (9) () Group 241, April 20-27. A group ot small spots, which change greatly on April 23. Group 242, April Z3~May i. A group consisting principally of two small spots, of which one disappears on April 27. Group 243, April 3O-May 4. A scattered group of small faint spots. Group 244, May 4-8. A scattered group of, small faint spots, condensing on May 5 into a single spot. Group 245, Miiy 7-11. A single well-defined spot. Group 246, May 9-18. One small well-defined spot. A second appears on May 10, but soon disappears again. TAKKN AT (illEKSWICH, AT IlAIiVAKH, AN1' AT Ml-l.llOL-RSK. IN TI1K \KAI:> 1874 TO 1877. 41 Measures of rsiti"iis and Areas of Sun Spots un45'44' H- 0-798 281-9 324-2 + 8-7 7 61 4S8 164-416 M, B 0-816 77'9 3*7-3 + 10-5 T *8 0-626 256-4 310-1 - 9'3 '5 S3 0-913 99'9 316-1 8-0 465 May 26 Onto (*7*'3) ( i-i) (11) ("4) (458) June 14 Centre (*'-3) (+'') (o) (o) (61$) 147-420 M, B 0-972 0-908 281-3 *59'5 321-9 310-9 + 10-8 - 9'9 200 177 165-397 June i 5 M, B Centre 0-790 101-7 317-0 .<) - 8-5 (+'*) (o) (o) 260 (260) May 28 Centre (246-1) (-0-8) (o) (0) (377) 148-410 May 29 M, B Centre 0-977 160-8 310-5 (233-0) - 9'* (-0-7) (o) (o) 250 (*$o) 166-412 June i 6 M, B Centre 0-737 838 307-6 (354-8) + 5'5 (+1-4) (o) (o) 205 (*os) May 31 No Spots or Fac ultc. 175-428 M.B 0-956 157-1 307-1 -11-4 200 250 0-298 152-7 217-4 12-8 *4 70 X '53-499 M, B *49 0-851 0-959 102-3 108-1 75-8 92-9 -10-5 -r-13-6 1 1 37 1 6o/ 212 June 25 Centre 0-874 9I-3 "747 (*35'4) (+*'5) (*4) (70) 156 (356) June 3 C.ntre (65-7) (-o-i) (II) (37) (37*) 54'43* M, II 0-898 *77'5 216-8 + 6-7 140 '77-539 June 27 M, B Centre 0-899 169-1 171-2 (*07'4) - 0-5 (+*7) (o) (o) III (.18) *49 0727 104-3 107-8 10-3 37 238 o luii- 4 Centre ( '53'3) (0-0) (37) (*38) ('40) 178-490 M, B *5' 0-590 145-0 227-8 110 10 30 >55'44' lone 5 M, n *49 Centre 0-553 109-0 108-0 ( 140-0] lO'l (4*) 200 (200) (o) June 28 0-976 ,00-9 118-4 ('94'9> 10-0 ( + *'8) (10) (30) *'5 (*'5> Group 147, May 17-26. OIK- small ipot A second appears on May 14, and a third on May 2*. Group 248, May 26. Two small spots. Group 249, June j-n. Two S|H>W, one of tutiu Tiry small. Group 250, JUIK- 25. Two small spots. Group 251, .luuc 18-19. A Ter . v c ' os < P 8 *" 1 of well-defined small spot*. 1 'n . r-i 1. 11 L i tru _ D i nn i. T?BCT-r*ro IvT.I 1 fiT~ 42 MKASURES OF POSITIONS AND AREAS OF SUN SPOTS AND FACUL.K ox I'HOTOOUAI'IIS Measures of Positions ;uul Areas of Sun S]iots aiul Faeiila- on Photogiapha cui/tmued. 4 | HELIOGRAI'HIC SPOTS. FACUL*. 4 g a HF.UO.IUA.-HI>- SPOTS. FACUL* 5 3 CQ l-t S to Greenwich $ T3 a i- 1 " 0. 6 Greenwich 3 a a L 1 t. ~ ** I a 3 |J O -2 = ^j = "^ Civil r2J S 81 c- Civil 1 o -^ V Time. t Ai g 5 I? B) 4 p|[ 5- ^_m a j_ o Time. rf f CD If M c c? T3 ^U B} IH B 8 3 J.jJ 1 "Sc 1 !il *'2. 12 i I i ^ ll H i -8$ . "u -a o 1 03 o '3 < a 3 i s - i 5 S .s 1 - -7T "o gSQ SSQ |A -A to a & 3 J $ < < s fc 3 c2 j 3 < < 1877. O O 1877. 179-459 It, B 251 0-749 250-1 228-1 -12-7 32 97 3 00 / 201-514 M, B 0-948 278-9 321-9 + I0'0 95 0-937 217-9 237-8 46-0 '57 0-938 254-7 317-9 -I2'4 261 0-912 IO1*6 117-4 - 9-3 265 July 2 1 Centre (250-2) ( + 5') () (o) (357) June 29 Centre (181-0) ( + 2-9) (32) (97) July 23 No Spots or Fac ulae. 183-442 M, B 252 0-626 77-2 91-1 + IO-6 10 31 o July 3 Centre (129-4) (+3'4) (10) (30 (o) 210-416 M, B 0-879 48-6 74-8 + 38-8 5' July 30 Centre ('32-4) ( + 5-8) (o) (o) (50 184*440 M, B 0-789 2697 168 o + 2-0 116 252 0-400 73'3 933 + 9"8 3 31 July 4 Centre (116-1) (+3-5) (3) (30 (116) 211-408 M, 1) 0-800 44'3 73'4 + 39" 1 9' July 31 Centre ("9'3) ( + 5'9) (o) () (90 185-407 July 5 M, B 252 Centre 0-190 56-1 94-2 (103-3) + 9'6 (+3-6) i (0 25 o (o) 213-523 M, B 254 0-617 282-4 129-2 + 12-4 '9 47 o Aug. 2 Centre (9''3) ( + 6-0) (9) (47) () July 9 No Spots or Fac ulae. 214-503 M, li 254 0-792 280-7 130-9 + I2'I o 20 104^ Aug. 3 Centre (78-4) ( +6- 1 ) (o) (20) (104) 190-436 M, B 0-854 279-5 95-5 -r-io'2 190 July i o Centre ' + 4-0) (o) () (190) Aug. 4 No Spots or Fac uhc. 191-104 H, A 0-981 280-5 107-3 + 11-1 324 Me. Aug. 7 No Spots or Fac ulas. July 1 1 Centre (28-1) (+4-0 (o) () (324) 225-523 M, B 0-858 108-3 236-4 I2'0 '39 192-495 M, B 0-928 102'2 303-0 - 9-6 45 Aug. 14 Centre (292-6) ( + 6-7) (o) (o) (39) July 12 Centre (97) ( + 4-*) (o) (o) (245) 233-506 M, B 255 0-991 83-0 104-5 + 7'9 27 116 334 194-063 H,A 252* 0-316 211-7 3>8-4 I 1-2 5 26 o Aug. 22 Centre (187-2) ( + 7-) (27) (u6) (334) Me. July 14 Centre (3487) ( + 4'4) (5) (26) (o) 234-534 M, li 255 0-939 83-4 i3'3 + 8-6 32 149 6 54 n Aug. 23 Centre (173-6) (+7-0 (32) ('49) (654) July 17 No Spots or Fac ulae. 198-468 M,B 253 0-565 237-4 319-6 -13-4 6 16 23 5 '44 M, B 255 0-848 84-1 103-2 + 8-8 3 230 69S/ 0-870 109-1 232-8 -14-0 258 AtliT. 24 Centre (161-6) (+7"0 (30) (230) (695) July 1 8 Centre (290-5) (+4-8) (6) (16) 200*519 M, B 0-947 283-5 335-' + '4'4 1 60 0-858 253-6 320-3 -i 1-4 215 239-478 M, B 255 0-082 70-3 103-8 + 8-7 '5 4' o July 20 Centre (263-4) ( + 4'9) () (o) (375) Aug. 28 Centre (108-3) (+7-2) ('5) (40 () Group 252, July 3-5. One very small spot which breaks up into two or three on July 4. Group 252*, July 14. Several small spots in a semicircle. Group 153, July 18. One very small spot. Group 254, August 2-3. Two very small spots, one of which disappears on August 3. Group 255, August 22-31. A large spot divided into three portions by bridges. On August 28 it has separated into two small spots, one of which disappears on August 29. TAKEN AT I l:KKN \M< II. A i ll\l.',.\ ! \ \ i M u osuree of l'iiti"n> .ind Areas of Sun Sjmi.- .m 7' 101 159 0-999 98-1 12-1 - 7'" '33 334'' Sept. i '55-'! (+7-*) () (0) (740) Sept. 25 Centre (103-6) ( + 6-9) () (138) (694) 268-588 M, n *59 0-901 101-9 2I-5 - 7-6 10 85 3o8/- :}6-;o^ M, ~J> 0-931 8l-6 306-3 + 9'5 *5 "7 296^ Snpt. 26 Centre (84-0) ( + 6-8) (o) (85) (308) ~ (5'S)(+7'J) (*5) ("7) (296) 269-506 M, II 59 0-785 104 8 22'l - 7'* 8 33 38i// Sept. 27 C.-nln- (7 1 -9) ( + 6-8) (8) (33) (38i) '4 '' 256 0-812 83-6 306-5 + 9'4 46 116 196^ 1 fcpt- 5 Cen tt<- (2-71 ( + 7-3) (46) (116) (296) 270-411 M, II 259 0-651 109-1 11 -8 - 7'o 6 35 o S.-pt. 18 n- (59-9) (+6-8) (6) (35) (0) ?6 M, n z;f> ^'676 84-2 307-2 + 9-2 51 21J '49 271-521 M, H 0-877 180-9 107-0 + IZ-7 M' 6 atn (350-0) ( + 7'3) (50 < 2 '3) ('49) 259 0-456 119-4 117 3 9 0-921 100-9 3397 - 7'3 54 2 9 (45-i)(+6 7 ) (3) (9) (95) 12 M, B 256 0512 84-3 3064 + 9"' 45 *49 o - (V: (337-3) (+7-3) (45) (*49) (0) 2 73'4>5 M, n 160 0-458 196-3 18-0 -19-4 3 K 0941 82-3 3095 + 9' 196 i;r; 20 M, ^6 0-030 35-1 308-2 + 8-6 36 158 o i Centre (23-l)( + 6-6) (3) (8) (196) 9 Centr. (309-2) (+7-*) (36) (158) (o) 277-411 M, B 0-841 160-8 23-5 - 4'* ,42 $ Centre (32 7 -3)( + 6-4) (o) (o) (*4) O, M. B 156 0-607 *747 3087 + 8-6 26 106 2 57 0-789 no-6 222-5 -11-4 9 75 2 I I*/ Sept. 12 Centre (271-2) ( + 7*) (45) (i8i) (211) 278-440 Oct. 6 M, H OwtN 0-936 *597 12*2 (3I4J) ( + 6'3 3 ) (0) (o) 389 (39) 160-5:4 M, ii 257 258 0-593 2401 0-438 1157 211-8 167-2 - 4'4 o '5 12 l86r 189424 7 II, B Centre 0-809 76-7 1I5-I (I69-1) + 14-0 (+5'5) (o) 81 (82) 18 (I90-4I (+7'1) 1) (17) (186) No Spot* ill;*-. 17 H, A 158 0-203 178-0 1693 - 4-6 o 6 Me. 2 5 8 0-204 '597 '657 - 39 o 296-447 M, II 0-839 79'3 '9'3 + 11-7 '57 20 ;tre 1 69-7) (0) (*) (o) 24 Centre ( 7 6- 4 )( + 4-9) (o) (o) IJ7) Group 156, SepleinUr 4-11. Two |*>ti ; the following gpot, which U until and faint, diapper on September 9. and tli* larger ipot haa greatly inrrea*ed in lite by Septem her 5. Group 157, Group 15!, September n-ig. One umall - September 18-21. Two small faint - Uruup 15!*, September 15. A v--ry ainil! *59. SepterntM-r 15-19. One iroall Gr.jup 160, Oi-toUr i. One Try inll upot. 44 MEASURES OF POSITIONS AND AREAS OF SUN SPOTS AND FACUL^E ON PHOTOGRAPHS Measures of Positions and Areas' of Sun Spots and Faculte on Photographs mntnmi',1. i-, 5 HELIOGRAPHIC SPOTS. FACUL.E. V. "a 3 HELIOGRAPHIC SPOTS. I'.UTL.K. 1 Jl a 4) -tj 5 A e t- t. gj 0, d d ^ h o o 00 * S _g w- l^ o " 2 i Greenwich B *j i"a *J z O Greenwich "2 ^1 *"i C3 Civil c! o 2 fi |.5 0-2- ^ Civil a o .2 J2 3 5- oJ. - -i. Time. f 11 1 f 2 gj" Time. f ll 1 ll ^ "o 11 1 E O si a .-.-. 5 Ife. 0-340 127-1 335'* -10-7 5 379 to No 9poti or Fac ule. .. 27 l '.-litre (351-*) (+<) (So) (403) (o) DM 7 :; 1-469 \l, It 264 0-193 180-5 334-9 10-1 73 343 IVir. IO I 28 '3347) (+1-0) (73) (343) (o) to t No Spots or Fac ul. I -. a. 1 1 } 332-086 n, A 264 0-138 115-7 334'7 10-1 44 3*7 Me. Hec. 14 \ 29 ire (316-6) (+0-9) (44) (3*7) (o) to ( Xo Spots or Fac ulie. Dec. 1 5 ) M. n 2^4 0-472 246-9 335-0 10-0 68 161 3 .-,, (308-9) (+07) (68) (161) (o) DM 17 No Spots or Fac uhr. 518 M, i> 164 0-819 2 57'3 335-4 101 50 203 644* 354-100 H,A 264' 0-887 103-3 334' 6 -1*7 37 184* 0-965 62-6 108-4 + 16-5 64 Me. 2 (181-4) (+0-4) (50) (103) (528) Dec. 2 1 Centre (36-6) (--9) (o) (37) (184) 336-077 II. A 264 0-88l 258-1 335-o -10-3 3' 2,5 5 i8 C 364-466 M,B 0-960 255-6 333'8 -'47 205 Me. 165 0-944 179-1 329-9 + 7-5 o 34 9*/ 3 ;itre (*74-o) ( + 0-4) (30 (*'5) (5*8) KIT. 31 Centre (260-0) (-3'*) (o) (34) (397) Group 264*, December 11. A small spot. Group 265, December 31. Two small spots. KOVAI, OliSIOKVATOKY. (JRKIONWK'II. LEDGERS OF AJil-AS AND POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM THE MEASUREMENT OF THE SOLAR PHOTOGRAPHS FOR KACJI DAY IN THE VK.MIS 1874-1877. 48 AREAS AND HELIOGRAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS AREAS AND HELIOGRAPHIC POSITIONS OF GROUPS OF Sux SPOTS DEDUCED FOR EACH DAY FROM THE MEASUREMENTS OF THE PHOTOGRAPHS TAKEN AT THE EOYAL OBSERVATORY, GREENWICH, AT THE OBSERVATORY OF HARVARD COLLEGE, CAMBRIDGE, U.S.A., AND AT THE MELBOURNE OBSERVATORY, AUSTRALIA, IN THE YEARS 1874 TO 1877. NOTE. The Greenwich Civil Time at which the photograph was taken is expressed by the month, day of the month (civil reckoning), arid decimal of a day, reckoned from Greenwich Mean Midnight. The Projected Area of the Umbru) and Whole Spots is the area as it is measured on the photograph, uncorrected for the effect of foreshortening, and expressed in millionths of the Sun's apparent disk. The Column "Longitude from Central Meridian" gives the Mean Heliographic longitude of the group, reckoned from the meridian passing through the centre of the Sun's disk at the moment of observation ; longitudes west of the centre being reckoned as positive. Dates for which the decimal of the day is not given indicate days for which no photographic Kecord is at present available. In these cases the means have been taken of the areas and positions of the spot-groups as measured on the day immediately preceding, and that immediately following the day for which the photograph is lacking. These interpolated values are enclosed in brackets, but are used in taking the final means for each spot-group. Date. Projected Area of Area for Group. Longitude Mean Mean from Date. Projected Area of Area for Group. Mean Mean Longitu 1< Greenwich Longitude Latitude Central Greenwich Longitude Latitude Civil Time. Umbra. Whole Spot. Umbra. Whole Spot. of Group. of Group. Meridian. Civil Time. Umbra. Whole Spot. Umbra. Whole Spot. of Group. of Group. Meridian. Group 82. Group 85. Single spot which breaks up into two on April 18. A large spot with several small ones near it. l8 74-,i o o o 1 874- a April 1 7 -48 5 O 208 O "3 II3-3 + 5-8 -19-9 May 1-539 2-499 '4 38 168 1 1 42 132 244-4 243-9 - 3-7 -63-1 - 3'9 -50-9 18-506 o 117 O 60 114-3 + 5' 6 - 5'4 3 No pho tograph. (20 223 246-1 - 4'3 -35"') 4-571 53 593 28 314 24'2 - 4-7 -19-2 Means ... o 87 113-80 + 5-7 5-490 6! 548 31 277 248-1 - 5'i - 7-1 6-432 22 645 I I 324 247-1 5'4 + 4'3 7-5I5 73 494 39 264 2 48'4 - 5'3 + 19-9 Group 83. 8-552 70 428 42 258 248-5 - 5-6 + 33-8 9-497 48 322 35 233 248-3 - 5'i + 46-0 Single spot. 10 No pho tograph. (18 I6 7 248-5 - 5'2 + 597) 1 1-526 ;8 o 100 248-7 - S 2 + 73'3 Anrils7*cc6 o ico o 171 296-0 12-4 64-1 28-574 53 285 41 221 297-0 I-J -49'7 Means 21 212 247-29 -4-86 29-663 53 306 33 189 296-6 -12-6 -357 3'577 7* 369 40 205 296-3 -13-0 -23-9 May 1-539 62 369 32 I 9 I 296-2 13-0 -11-3 Group 86. 2-499 ; 88 3 No pho 349 tograph. 45 (35 I 7 8 171 296-0 296-0 -13-3 -13-5 + I'2 + '4'9) Two large spots. 4-57I 5-490 6-432 7'5>5 43 *4 25 27 284 200 227 H9 25 16 21 34 I6 4 133 188 188 295-9 295-6 295-1 295-2 -13-7 -13-6 -13-2 -13-7 + 28-5 + 40-4 + 52-3 + 66-7 Mav 6-432 7-5'5 8-552 9'497 o 76 140 108 I 5 6 495 706 639 O 72 f 64 2 + 8 467 494 378 171-5 171-5 171-7 171-6 + 6-5 + 7'4 + 7-5 + 7'4 -71-3 -57-0 -43' -30-7 Means ... ... 29 182 295-99 -13-13 10 1 1-526 No plio 8 tograph. 384 (34 4 287 196 172-2 172-7 + 7'3 + 7-i -16-7) - 2-7 Means 45 345 171-87 + 7'20 Group 84. Small scattered group. firntm S- April 30-577 o 46 24 33I-5 + 7'9 + 11-3 A large group of many spots. May 1-539 o 60 o 34 331-8 + 77 + 24'3 2-499 o 46 29 331-3 + 8-0 + 36-S May 7-515 58 591 93 954 '5 6 '' - 6-9 -72-4 to i n-7 c i r r "f-t 6-6 COM Means ... ... 29 JJi'SJ + 7-87 9-49" '77 "59 130 852 155-1 - 7" 37 ' -47'2 TAKKX AT GKKKSWICII, AT HAKVAKD, ANI. AI MKI.IIOI;I:SK, IN IIIK VKAKS 1874 TO 1877. B i.q>liir 1'i.siti'ins of (Jroiiiis of Sun Spots cmitiiiited. I)mtr. Dwieli I'illir. Amul Area ! r up. IM KM Longitude Latitude of Group, of Group. gttodi from Central Meridian. Date. Greenwich Civil Tun.'. l'roii-r(,-.| Artw Inr Area of Uroup. M.-.M Longitude of Group. Mean Latitude of Group. ;. '., boa Central Meridian. Umbra. Spot (Ir 1'in' . >up 87 Whoh> -cantini 640 4*7 389 35 31* *7. *35 64 9* Umbra. >(.. : I'mbrm. Spot. - 7-' 7'* - 7'i 7' 6-9 - 6-8 - 6-6 - 6-7 - 6-7 o -33-0) -18-7 - 5-) + 7'5) + 206) + 337) + 46-8 + 61-0) +75"' Group 90. One large pot of very irregular ha|>. I874-* 10 I 1-526 12 '3 '4 5 16438 18-441 No plio 98 No plio No pho No pho N'i plin 47 NH plin tograph. 807 tograph. tag! .:> togrnpli. 3" :.-.- : ' 4 s (9' 5* (48 (45 (4' (38 34 C7 o o 55-9 156-8 156-9 157-0 '57 i r$7'i 158 2 I59-I I874-.I May 26-442 *7 28 *9 30-47* 3' June i -48 1 2-527 4-466 5-466 58 No pho No pho No pho 87 Xn I'lio ss No pho 37 376 ;.,._.. ,,,; ; . !;: i|'ii. togmpli. 501 , togrsph. 368 364 tograph. 210 "3 59 (55 (5* (48 45 (39 3* 34 (36 38 384 353 ! 290 *S9 231 202 226 221 216 "3 278-2 278-4 278-6 278-8 279-0 279-2 *79'4 *79'4 *79'4 279-3 280-0 e + M-3 + 11-2 + 11-1 H-10'9 + 10-8 -r-ii-2 4-11-6 + 11-2 + II-I + 10-9 + 11-6 -59'9 -4'4) -3*'9) ~'9'4) - 5'8 + 77) + 21-2 + 35 ' + 47-8) + 60-6 + 74'6 M ;n.- ... ... 5* 480 I56-81 - 6-88 ... A pr< Nopbo rap of th 84 W : *7 Group 88. ee small spot* widely separated. Means ... ... 40 26 S 279-06 + 11-17 ... Group 9 1 . One well-defined spot of regular shape. M..V 9-497 10 1 1-526 O (o O 68 56 44 249-1 247-0 244-8 + 20-5 +46-8 + 21-2 +58-1) + 21-9 +69-4 June 1*481 2-527 4-466 5-466 3 49 No pho 49 *3 IOO 216 tograph. 258 4 8 33 3 (33 27 12 11 1 166 '54 142 i7 195-1 '95'4 '95'4 '95'4 196-2 - 7'3 - 6-6 f.,0 -63-1 -48-9 A.t\ HIS ... 56 246-97 + 21'2O Group 89. Two or three (null spots. it - 7'o - 7-o 3 '; -*3'3 - 9-2 Mi':i!l.s ... ... *9 140 195-50 - 6-94 ... 16-438 >7 18-441 '9 20-44; *'-;>9 22-51; o No pho O No plio O O 59 tograph. 4' 53 59 30 o (o (o 79 53 *7 28 28 3> 16 4*'5 43'4 44'3 44-6 44'9 44-9 45-6 -'SH ~'3'4 -13-4 -I3-5 -13-6 -'37 -'37 -67-9 -53-8) -397 26-2) Gruup 92. Two faint spots. -12-6 + 2-2 + '5'5 June 1 1-534 12-417 13-409 14 '5'5S* o o 38 No pho 97 58 198 tograph. 36 o 21 (tl O 5 30 108 69 *9 121-7 1217 I20'2 121-5 122-8 i 1-1 -"3 in -107 IO'2 - 3'4 + 8-3 + '9'9 + 35'4) + 50-9 illS ... o 37 44' 3' -'3"53 ... i irtmp 89*. Two large spots of irregular *h;i|f. Means ... 6 57 I2I-58 -10-88 ... Group 92*. Two spot-. M,y 20-44; *''559 22-515 *3 M *; 26-442 85 10 35 No pho No pho No pho 3 % 509 _r : .; ipl . 43 47 18 ('4 (10 (6 3 301 T 265 210 '55 100 44 35'9 33*9 34-6 35 5 36-4 37'3 38-2 -16-2 -16-1 -16-2 -15-9 -15-6 -'53 -14-9 -21-6 - 8-8 + 4-5 + 18-4) + 32-3) + 46-2) + 60-1 .Tunis 15-552 o 53 1 6 ,'i-apli. 17 \ photograph. 1 g No pho tngrnph. 19-527 o 123 o 29 (o 85 (o 140 (o 195 o 250 9 1 I 92-0 93-0 9.V9 94-8 10-9 10-6 IO'2 - 9-8 - 9'5 + 19-2 +33-;) + 47-6) + 616, +75-5 - ... '5 181 35-97 -15-74 Mi'iin.-i ... o 140 92-96 1O'20 I 50 AREAS AND HELIOGRAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Date. Greenwich Civil Time. Pi ojected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Umbra. Whole Sj>ot. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Gioup 93. One small spot. Group 96 continued. '874- June 28 29-416 30-409 July i 2-464 3-529 4-403 No pho 83 '73 No pho 75 4 to^niph. 792 1268 tograph. 688 107 2 5 (22 44 IOO (83 66 7 o 218 419 733 67. 609 167 59 261-7 262-3 262-2 262-2 262-2 264-5 2597 - 9-3 IO'I -10-4 IO"2 o +. I-I) + 13-9 + 26-9 + 4'5) + 54'' + 70-5 + 77-3 I874- a June 13*409 O 45 O 26 o 129-3 o + 87 o + 29-0 Means 26 129-3 + 87 Group 94. y - 9-6 - 8-9 One spot, which greatly increases in size on June 19, and breaks up into several fragments. Means ... ... 40 362 261-98 9-60 ... June 15-552 16 17 18 19-527 20 21 22-608 23-469 24-458 25-5I2 o No pho No pho No pho 53 No pho No pho 89 71 32 32 126 tograph. tograpli. tograph. 815 togrnph. tograpli. 899 801 447 193 o (7 (14 (21 27 (36 (45 54 5 2 34 70 126 I 99 272 345 418 461 504 548 589 481 428 12-3 I2'I 11-8 11-6 H'J u-8 12-4 12-9 14-0 1*4 17-2 + I2-I + U-8 + 11-5 + 11-2 + 10-9 + 10-7 + 10-5 + 10-4 + 10-5 + IO-2 + IO'I -59-6 -46-7) -33-8) -20-9) - 8-0 + 6-2) + 20-3) +34-4 +46-9 +62-3 +77-1 Group 97. One small faint spot. It breaks up into a cluster of very small spots on July 2. June 30-409 July i 2-464 3-5Z9 4'43 No pho 2 O O 28 tograpli. 79 153 21 22 (i 33 ' 43 o 79 I I 186-7 187-8 188-9 190-6 191-5 - 8-7 - 8-8 - 8-8 - 8-5 - 8-9 -48-6 -33'9) -19-2 - 3'4 + 9' Means o 38 189-10 - 8-74 Means 33 397 13-07 + lO-gO Group 98. Two spots. They are small on July 2 but much larger on the following days, and form two streams. Only one spot of the group, 980, is still on the disk on July 13. A very scattered group < changes in form an Group 95. omposed principally of live spots. It undergoes very rapid in size during its course. July 2-464 3-529 4'43 5 6-546 7'454 8-5I3 9-535 10-501 1 1 I 2 I3-549 o 14 31 317 131 1054 No pho tograph. 343 2002 300 2395 266 2342 276 1976 164 1 08 i No pho tograph. No photograph. o 53 22 77 (126 '74 154 148 179 130 (87 (43 o '4 223 620 818 1016 1228 1301 1283 858 612 365 118 148-5 150-0 151-4 151-3 151-2 151-2 152-8 '53-5 1527 148-0 143-3 138-6 + 12-4 + 12-9 + 11-4 + 11-4 + 11-4 + 1 ro + 10-8 + 11-4 + 11-5 + 97 + 7'9 + 6-1 -59-6 -44-0 -31-0 -17-0) - 2-9 + 9'' + 24-8 + 39-0 + 51-0 + 597) + 68-4) + 77-2 June 24-458 25-512 26 27-574 28 29-416 30-409 July i 2-464 3-529 4"43 5 6-546 o No pho 54 No pho 77 52 No pho 57 o 28 No pho 28 85 tograph. 4 8l tograph. 56, 678 tograph. 34 68 '35 tograph. 37 o o (21 42 (43 44 27 (29 3i 20 (10 62 H3 243 373 346 39 355 271 186 42 97 80 63 237-3 232-9 228-9 224-8 224-3 223-7 224-6 225-7 226 7 227-2 227-1 227-1 227-0 + 2I'I + 22-3 + 20-8 + '9"3 + 18-0 + 167 + 17-0 + 17-2 + J7-3 + 17-2 + 17-6 + i7 - 3 + 16-9 -76-8 -67-2 -57-6) 48-0 -36-4) -24-7 10-7 + 3'9) + 18-6 + 33'2 + 447 + 58-8) + 72-9 Means 95 705 149-38 + 10-66 ... Means 21 196 227-48 + 18-36 Group 99. At first a single well-defined spot. On July 3 and 4 a row of small spots forms immediately behind it. Single spot. On June spots. The group whole of its course. Group 96. 29 it has expanded into a long straggling group of small undergoes very rapid change in form and size during the July 2-464 3'529 4-403 5 6-546 13 38 33 No pho I6 7 84 262 579 tograj.li. 838 18 33 23 (56 88 120 228 405 4 2 3 44' 138-9 139-5 139-1 138-8 138-4 - 5'4 - 4'i - 5'8 - 5'4 - 4'9 69-2 -54'5 -43'3 -29'5) -'57 June 27-574 o 33 O '7 261-0 - 8-4 -ii-8 TAKKN AT II.VKVAKI'. ('AMI'.KIl'iIK, I'.S.A.. AM' AT MKI.BOUKN K, IN TIIK YKAK8 1874 TO 1S77. 51 .1- iin.i llrli,..'i;iphi<- I'i'.-itions of Group* oi Sun Spots continued. Oreenwich Tim*. t'rulirm. a..!' Whoh Bpei Ann lr !' HHI : -U.il- "I iir.nip. M. Latitude Up. I/niiritudi- from Central M< ridian. lute. :i-irll i ' i v i 1 Time. I'r!' Area for Area of i|>. ilr.ll Longitude f Croup. Mean Latii Of (if Longitude from Central Meridian. 1/ii.l.ra. Whole Umbra. Whole Spot. Umbra. Whole Cmilp 99- -fonlini 307 3*9 *'3 "3 100 86 7* */. Group 101 eonKnvfti. 1874-.' .luh --454 8-513 9-535 10-501 1 1 I 2 13-549 90 107 45 3' No |>ho No pho 602 638 379 76 ' - ' T 30 46 55 *5 20 ('4 o 138-1 138-1 M93 39'3 1392 '39* 139-1 - 4* - 4-8 - 5'3 - 5'* - 5'3 5'4 - 5'5 o - 4-0 + 10-1 4*4-8 + 37-6 + 51-0) + 64-4) + 777 i874-.i July 15-443 16-524 17-516 18-511 74 *74 48 J'5 54 J38 33 161 38 28 4' 34 '4' '85 158 168 o 45-9 53-0 58-1 57'4 + 3-8 + '*7 + 10 5 + 10-5 O + 9' 6 + 31-0 + 49'* + 617 Means 19 118 49-98 + 13-04 ... 32 236 138-91 - 5-16 (Iroiip 103. One large regular Knot. July 4-403 6-5+6 7>54 8-513 9*535 10-501 1 1 12 I3-549 I4-5I2 15-443 16-524 Group 100. One Urge regul.ir spot. July 14-511 ' 5443 16-524 17-516 18-511 '9 20-513 21-503 22 * 3H97 14-565 46 45 44 ,39 No pho 43 *9 No pho 12 O 39 118 216 *5' 222 togruph. '49 103 bogi ip>. 46 29 o 55 36 *9 22 (** 22 :i 8 87 4' '74 164 1*7 102 77 54 4* 3 *4 331-1 331-1 331-1 330-6 330-2 3*9-8 3*9-3 3290 3*8-7 328-4 3288 + 187 + I7H + 18-5 + 18-6 + 18-3 + 18-4 + 18-4 + 18-4 + 18-6 + 18-8 + 18-3 -77-5 -65-2 -509 -38-3 -25-5 126) + 0-3 + 12-9 4-15-8) + 38-6 453'* o 154 126 719 121 771 178 889 156 803 91 8l8 No pho to^raph. No pho tograph. 142 699 61 267 116 343 o 150 (55 109 83 '03 83 (81 97 $4 '5 53* 576 620 5*9 5'4 4*7 4*4 *i! 460 479 236 445 537 1017 101-5 IQI'2 101'2 IOC4 1017 1017 1017 101-8 101-8 102-4 102-1 102-8 i ri io'6 lO'l 10-8 lo-i -10-5 10-2 -I0'5 10-8 ll'O 10-9 - 99 -10-5 807 -66-8) -52-9 -40-9 -26-6 -12-8 o-o + 13-5) + *7'o) + 40-4 + 53-8 +65-8 + 80-8 Means ... 20 93 329-83 + i8>o ... Group 104. At first one faint spot, which breaks up into two or three on July 16. M-.ins 7> 479 10177 -'0-54! ..- Group 101. -pots, the liist beiiifj very small. They greatly decrease in size on July 7, and on July S one disappears altogether. The spots 98 to 101 seem to suffer con- tinual changes. July 15-443 16-524 o 94 33 O o 53 17 10-8 98 + 3-5 + '++ -*5'5 12-2 M '-HI ... ... 35 10-30 + U'95 July 6-546 7-454 8-513 9-535 *S o '5* 44 35 '9 '4 o o 85 *3 9 10 128-4 127-9 136-0 1367 + 6-6 + 67 + 4'9 + 4'5 -257 -14-2 4- 8-0 + 22-2 Group A rery faint close cluster of small spots, hmh on July 15. 104*. The group has partly passed round the Means 4 34 132-25 4 5-68 ... July 16-524 17-516 18-511 '9 20-513 21-503 22 *3'497 4*5*S 25-460 o 66 '59 No pho 26l 2 9 2 No pho 57 9* o '*4 604 855 tograph. 1421 1214 tograpli. 1 140 576 25 36 81 (no 138 172 (160 148 158 o 77 3*8 436 594 75* 7'4 895 '07? 993 7 ' 345'* 346-2 346-3 347-o 3477 347^ 348-1 348-1 348-9 344'* + 6-2 + 6-5 + 6-2 + 6-4 + 6-6 + 6-0 + 6-3 + 6-5 + 5-8 + 5-6 -36-8 -227 - 9'4 4- 4-6) + 18-5 + 31-8 +45'0 458-4 473-3 4-80-4 1 Group 102. On July 10 one small spot On July 13 it has become two of much lamer si/. . Thfs. : more and more widely separated, increase in siz><. an>l break up into several portion* as the group crosses the sun. July 10-501 1 1 12 '3 549 14-512 .- \ 35 u Nu phi- tograph. No photograph. *7 I9 1 o 92 ( 5 (10 '4 o *9 53 77 100 47 48-3 477 47-0 46-3 461 + 4-5 + 14-1 + 13-8 + 13-4 + 14-1 -53'4 -40-6) -27-9) '5 ' - *'5 Means ... 100 594 346-97 + 6-21 52 AREAS AND HELIOORAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographie Positions of Groups of Sun Spots continued. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Date. Greenwich Civil Time. I'rnjcctcd Area of Area lor Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Group 105. One regular spot. Group 107 continued. 1874-.. Aug. 9 10-431 1-513 No pho 41 16 tograph. 181 65 (33 40 30 165 '77 123 1 12- 9 1 12-8 1 14-0 + 11-8 + 12'0 + ir8 o + 47-I) + 60-2 + 757 1874-a July 23H97 24-56; 25-460 26 27 28 29 3-452 31-420 Aug. i 2 S'434 25 49 74 No pho No pho No pho No pho 105 75 No pho No pho 27 "3 258 398 tograph. tograph. tograph. tograph. 524 394 tograph. tograph. 95 S 2 49 56 (56 (56 (55 (55 55 44 (44 (43 43 23> 261 299 294 290 28 5 280 276 232 206 I 80 153 o 213-7 214-9 215-2 215-4 215-6 215-8 216-0 2 I 6-1 216-8 2I7-O 217-2 217-4 o + 5-2 + 5'3 + 4'8 +- 5'4 + 6-0 + 6-6 + 7-z + 77 + 7-9 + 77 + 7-6 + 7'4 -76-4 60-7 -48-6 -35-i) 21-6) Means 37 206 112-51 -f 11-21 ! - 8-1) + 5-4) + 18-8 + 31-8 + 45'3) + 58-8) + 72-3 Group 1 08. , A long HUP of small spots. It is seen much foreshortened on August very close to the limb, and is therefore difficult to measure. 10, being -34-9 -21-5) 8-0) + 5-5 + 19-8) + 34'i +49') + 63-8 Aug. 3-434 4 5 6"437 8-451 9 10-431 61 282 No photograph. No pho togniph. 83 324 N<> plni togiftph. 104 463 No photograph. '3 '39 42 (44 (46 47 (59 71 (45 18 '93 190 187 183 250 317 253 188 IIO-2 10-4 10-6 10 9 11-9 12-9 14-7 16-4 20-3 -20-3 -20-3 -20-3 Means ... 5' 249 215-93 + 6-57 Group 1 06. A number of spots in a fine stream, b the leader on August 3 and the succeeding days is a large regular spot. 20-4 -20-4 20-4 Means 47 220 112-25 -20-35 Group 109. One small spot. July 30-45! 31-420 Aug. i 2 3-434 4 5 6-437 8-451 '35 182 No pho No pho I 7 6 No pho No pho 108 No pho 36 928 1056 tograph. tograph. 97 I tograph. tograph. 703 tograph. 356 95 109 ( 102 ( 9 6 89 (86 (83 80 (72 64 634 621 578 535 493 499 505 510 583 656 154-8 153-9 I53-0 I52-I I 5 I-2 I51-5 15I-8 I52-O 152-9 '537 + 9' 8 + 9-5 + 9'7 + 99 + lO'O + 9'8 + 9' 6 + 9'4 + 9'3 + 9"' -42-5 -31-1 -187) - 6-3) + 6-1 + 19-6) + 33-i) + 46-6 + 60-8) + 74-9 Aug. 3-434 36 A No pho 5 No pho 6-437 38 7 No pho 8-451 24 9 No pho 10-431 16 11-513 o 104 25 tograph. ( 2 3 tograph. (22 139 20 tograph. ( I 7 9 6 H tograph. ( 1 4. 53 '4 33 72 72 73 73 65 56 5' 45 45 104-4 104-4 104-3 104-3 104-2 104-2 104-2 104-1 104-5 i i-i I I'2 -11-3 -)I- 4 -11-6 -11-7 -11-6 -11-5 -ii-8 -40-7 -27-5) -14-3) -iM) +25-4 +38-5) +51-5 + 66-2 Means 88 56, 152-69 + 9' 6 ' Group 107. One large spot, and two or three small fragments near it. It gradually diminishes in size. M^ans 17 61 104-29 1 1-47 Group no. A large regular spot. July 31-420 Aug. i 2 3^34 4 5 6-437 7 8-451 27 No pho No pho 68 No pho No phc 75 No phc 43 "5 tograph. tograph. 523 tograph. tograph. 362 tograph. 252 44 (43 (42 4" (40 (39 38 (32 26 189 230 272 3i3 270 227 184 169 ! 53 I I2'0 Ill-g 1 1 1 -9 11-8 12-1 12-4 I2'6 12-8 12-9 + 10-5 + 10-6 + 10-6 + 107 + 10-9 + iri + 11-4 + 11-5 + 11-6 -73' -59'8) -46-5) -33'3 -19-8) - 6-3) + 7'2 + 20-7) +34-1 Aug. 8-451 9 10-431 11-513 12-439 '3 14-501 I5-432 16 17-477 23 No pho 118 144 179 No pho 159 H7 No pho 1 12 150 tograph. 577 815 831 tograph. 836 898 tograph. 716 80 (92 103 95 102 (9- 80 76 (74 72 518 510 502 536 475 448 420 463 461 459 336-9 357-3 357-6 357-9 357-8 358-1 358-3 358-o 358-i 358-2 + 2-2 + 2-2 + 2-1 + 2-5 + 2'4 + 2-4 + 2 4 + 2-3 + 2'3 + 2-2 81-9 -68-5) -55-o -40-4 -28-2 -H'4) - 0-5 + 11-5 + 25-1) + 387 TAKEN AT I ' KBKNW I< II, llAKVAKH, I'.S.A., AM' Al M Kl.r.Ul'KN K, IN THE YEARS 1874 TO 1877. 53 \ uinl Ili'liiyr;ijlii<- I'ositimis ,.|' ( Jrniips nf Sun Sjiol I'.-. iwich Civil Time. 1'r" Area of Area lr Up. Mean Lonxituilc nl Cn.up. Menu Ulitude "Up. l.<.iii;llll'!i' !]"!], Central Mrriiliiin. I'n.j An iwieh (nil Tin,,.. Um , (rm i.l Whole . >,*,i. u " br - ' '"' longitude nip. M*u Ita b.i^itu,!, UUtude /""" Wholr i.Kirou].. of(Jr..np. S|t M-ridian. Umbra. '.vi. :, Spot Umbra. Whole ip 1 10 eoniin < iroup 1 15. Two HpoU clotv togetlu r. 1874- .1 18 '9543 20-563 Xu ,.1,0 6 tograph. 309 87 "! o 4*5 39' 347 358-5 358-8 i "6 o + '7 + ''I 4- 0-6 o + 5*7) + 66-6 + 82-9 I874-.. Aug. 19-543 20-563 21 536 **'47S *3 14-502 *5'4S* 16-429 27-488 *8'434 29-515 39 57 74 80 No pho f 6x 74 58 28 18 230 400 397 462 togr.iph. 466 354 368 284 2X0 9* 45 47 49 47 (5 53 SI 44 28 3* 268 328 26l *7* 263 *S3 201 X30 217 218 1 68 O *3'4 230-7 231-3 231-3 231-2 231-1 *3''3 231-2 231 2 231*0 231-6 k -15-8 -'49 -60-8 48-0 ma 70 45 35 8 ' 2 4 + 1-03 ... -'49 -15-5 15-3 -34-5 xx-i 88) - 10-431 11-513 12-439 13 14-501 '5'43* 16 '7'477 18 "9 543 20-563 21-536 "'475 i]> in. Three spot*, one very large. -15-1 -15-1 -15-2 -15-0 -14-6 -5'3 + 4'5 + 17-1 + 30-0 + 44-0 + S6-3 +71-2 26 IXI No pho 269 218 224 No pho I 12 9* 40 o *97 883 1169 t"f;raph. 1886 1605 tojjniph. 1206 t"rapli. 663 743 211 *4 80 170 36 (150 164 i*4 (126 i*7 (105 83 86 58 900 '*44 1082 11.6 1150 912 799 685 588 49' 694 306 79 335' 33*7 3337 333 5 333'* 332-9 332-9 33*9 333'' 333J 33' 4 33'7 33 ''4 -18-6 -'77 -18-2 -17-8 ~'7'3 -17-9 -17-9 -17-8 -18-0 -i8x -17-8 -17-9 20-3 -77-6 65-6 -5*'3 -39-0) -25-6 -13-6 - o-i) + '3'4 + *7'3) + 41-1 + 5*7 + 65-9 + 78-0 M.-:in8 ... ... 43 *44 231-21 -15-15 ... Group 1 1 6. One small spot. ^V- '9 - 543 20-563 21-536 "'475 O O 35 33 45 28 108 75 *5 20 7 8 *7 78 45 219-1 219-2 219-6 219-6 + 60 + 6-6 + 6-5 + 5'9. -73'i -59-5 46-2 - M'MII- ... ... 1 1 57 219-38 + 6 M> ;m< ... 1 08 773 332-90 -18-11 Group 117. One small upot. Group 1 12. A few very small spot* in a close cluster. 24-502 *5'4S* 26-429 27-488 28-434 29-515 30 31-483 9 *3 18 No pho O *7 58 78 4 54 57 , . i'.'i '5 '9 7 3 *3 *9 o 3 9 o (o '7 191 IXI 82 ll 80 22 2 59'* 262-6 264-1 262-7 262-9 263-0 260-8 -12-8 -11-5 lO'l 10-0 - 9"' - 8-2 -6-4 -33-0 16-1 - 7 + 9'3 + 22-9) +3*4 +46-7 "Iroiip II 8. A scattered group of Taint spot*. 29-515 30 31-483 S.'pt. 1-456 2-418 8 No ,.li" o '5 >9 ' S6 u togmpft 118 152 '73 4 (2 O 9 '4 ll 73 6 5 93 >*7 151-5 152-2 151-8 154-0 '53"9 - 6-9 - 7'4 - 7-8 - 7-8 - 8-9 + 4-8) + '84 + 3*'4 +45"' us ... 7 85 262-19 - 9-73 7 B - 7-' 54 AREAS AND HELIOGRAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Date. Greenwich Civil Time. Projected Area for Area of Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole . Spot. Umbra - Whole Spot. Group 118 continued,. Group 121. A group of small spots forming a circle. I874-4 Sept. 3 4'57 5'43 No pho *4 15 tograpli. I 9 3 3 (3 45 56 243 358 319 o 153-6 153-2 151-0 o - 77 - 8-3 - 6-9 o + 59') + 72-8 + 81-6 I874- a Sept. 9-609 10-439 1 1 12-434 1 1 1 1 No pho: 2 4 84 I2O tograph. 275 7 8 (20 33 52 85 237 388 o 43-5 43-3 43-i 42-9 o -14-7 -'37 -13-8 I 5 -Q o + 29-6 +40-4 + 53'4) + 66-3 Means ... 20 170 15278 - 7-49 * J 7 Means 17 191 43-20 14-03 Group 119. One spot. Group 122. One small regular spot. Sept. 15-467 16 7 18 19-450 20 21 22-452 No pho No pho No pho No pho No pho 35 tograph. tograph. tograph. 25 tograph. tograph. 22 (o (0 (o o (o (o o 48 39 3 22 H '4 3 13 230-4 230-2 230^0 229-8 229-6 229-7 229-7 229-8 -'3'3 -13-2 -13-1 -13-0 -12-9 -12-9 -12-9 -12-9 -66-1 -53-2) -40-3) -27-4) -14-4 - 1-2) + I2-I) + 25-4 Sept. 4-570 5 '43 6 7 8 9-609 o o No pho Nophc No pho O 29 26 tograph. tograph. tograph. 66 O (o ( (o 69 33 33 34 34 34 2-4 2'5 27 2' 9 3-2 3'4 + 2-6 + -i + '3 + '4 + -6 + '7 78-0 -66-9 -52-8) -387) -24-6) -10-5 Means ... ... 24 229-90 -13-03 Means ... ... o 40 2-85 + 1-62 ... Group 123. A small spot ami a very small marking at a little distance. Group 119*. A long row of small spots. Sept. 22-452 23 24-414 25-425 26-526 27 28-509 3 No pho 21 20 H No pho I2O tograph. 97 77 5 tograph. 16 16 (14 1 1 1 1 9 (5 o 6 5 58 5i 43 33 26 18 187-1 187-6 188-1 188-3 188-8 188-8 188-7 + 21'0 + 2I-I + 21-2 + 21-3 + 2I-I + 20-7 + 20-3 -I7-3 - 3'9) + 9' 6 + 23-2 + 38-2 + 5I-3) + 64-3 Sept. 12*434 13 14-464 39 No pho 16 187 tograph. 63 *7 (28 2 9 129 122 114 20-5 22-6 24-6 + 7'3 + 7-i + T +43'9 + 59H) + 74'8 Means 9 4 2 188-20 + 20-96 Group 124. One large regular spot. Means ... ... 28 122 22-57 + 7''3 ... Group 1 20. One small spot. Sept. 22-452 2 3 24-414 25-425 26-526 27 28-509 29-516 30-476 Oct. 1-461 103 No pho I2 9 146 131 No plio I0 5 7' 5 3 2 5,6 tograph. 749 797 722 tograph. 597 436 257 129 76 (74 7i 76 69 (68 67 56 55 69 382 398 4'4 4'5 380 382 383 34i 285 281 159-6 '597 159-8 159-9 160-0 160-2 160-3 160-1 160-2 160-9 - 9'i - 9' 1 - 9-1 - 87 - 8-6 - 8-5 - 8-3 - 8-2 - 8-1 - 8-3 -.44-8 -31-8) -187 - 5'2 + 9-4 + 22-7) + 35'9 + 49-0 + 617 + 75'4 Sept. 9-609 10-439 o o 26 5 o 2 9 75 77-0 74-3 + 3'4 + s-i + 63-1 + 7i-4 Means ... ~. S 2 75-65 + 4^5 Means ... 68 366 160-07 8-60 ... TAKKS A! <;i:HKN\VI<-||, AT 1|AKV\K1>, AND AT MKLBOfHNK, l\ IMK \KAK8 1874 TO 1877. 55 I'M, Area of A IVilS Area for ip. uiiil lleliographic Positions of Groups of Sun Spota continued. Date. Greenwich Civil Time. Mean Lonfiiunli- ofGroup. M. II Latitude .M.Up. IxnipHiili Inuii Central Meridian. rmj iwii-li Civil Time. Umlini a of Arra for Group. \1. , Longitude nl liroop. V .:. Latituli- of Crimp. Ix.ngilii'lc from Central Meridian. Umbra. I'mlira. Whole S|*.t. Whole >|-,t. Umbra. Wl,.,le S|.l. 1 'ritup 125. One small regular spot. Group 129. Three spots arrange*! in a line. l874.,. s,.(,t. 25-415 26-526 *7 28-509 29-516 30-476 21 14 50 No pbojtagtaph. o 26 o 27 20 O ,6 (8 o o 5* 36 16 '5 10 o 86-7 87-2 87-3 87-4 87-6 88-0 o + 3'6 + 4'3 + 4' + 3-8 + 37 + 3'3 O -78-4 -63-4 -50-2) -37-0 -23-5 -10-5 '8-4- * Oct. 10-409 ii 12 13-491 "4 15 538 86 No pho No pho 45 No pho O 416 , tograph. togrsph. '73 toj-niph. 26 47 (44 (4i 38 ('9 *34 204 "75 '45 in 77 3347 335'' 335'S 336-0 336-8 3377 -67 -16-6 -16-5 -,6-j -16-4 -16-4 + 7'3 + '-3) + 35'0 -r-49' 2 +63-6) +77'9 Mi>aiig 4 3' 87J7 + 3'8o ins ... ... 3* 158 335'97 -16-48 Group 126. One small spot and two very small specks near. Group 130. Two small spots. The smaller of these grows gradually fainter, and disappears on October 20. it 29-516 30-476 1-461 2 3H54 12 2 3 .6 N i'h" 2 - 1 106 66 53 10 '5 9 (5 i 59 60-8 -105 70 61 -9 H'5 38 62-1 117 33 61-2 11-8 28 60-3 11-8 -50-3 -36-6 -*3'4 -lit) + '' Oct. 15-538 16 7 18 19-538 20-503 21 22-551 17 No pho No pho Xo pho O *4 No pho o 10 9 tograph. tograph. tograph. 50 95 tograph. 21 1 1 8 (3 o >3 (7 o 7i 60 49 37 26 5* 8 2197 2197 2197 2197 2197 217-3 217-3 117-3 + 9'4 + 9'3 + 9 ' + 8-9 + 87 + 9' + 8-6 + 8-2 40-1 -26-9) -37) - 'S) + 12-7 f-23'O +36-5) +50-0 118 ... 46 61-26 11-46 A Group 127. close cluster composed of many spots. Means ... ... 6 43 218-80 + 8-90 ... Group 131. Single spot. '. 28-509 29-516 30-476 Oct. 1-461 2 3-4>4 4 5-477 6 8-508 9 10-409 58 75 93 221 \3'5 -'3'3 -13-3 -13-2 -13-0 -127 -12-4 12-0 -"7 -76-8 -66-8 54 4 -4''5 -28-5) :!% + 12-4 +15-3) +38-*) +51-1 +62-9) + 74-6 Oct. 15-538 16 '7 ll 19-538 20-503 21 22-55I *3'5'4 35 No pho No pho No pho 38 22 No pho 28 O 1 06 togi i; h. jr i; li tograph. *3' 158 bo -r ph. 92 44 57 (47 (38 (9 20 1 1 , ('3 15 o 171 ' 5 A 146 '34 122 80 65 5 17 187-1 187-4 1877 188-0 188-3 1887 189-1 189-5 189-9 + 9-4 + 9'* + 9'o + 8-8 + 8-6 + 8-6 + 8-6 + 8-5 + 8-1 -7*7 -59'*) -457) -32-2) -187 - 5-6 + 8-3) + 22-2 + 35-3 Means ... 26 I 06 188-41 + 8-76 Means ... 129 984 44' '3 12-98 Group 132. Single spot. Group 128. At first, one very *m;.ll ,|>ot, but on October to it 1ms extended into a row of several small fragments. Oct. 19-538 20-503 21 22-55I 23-5I4 2 9 36 Xn pli" 44 48 181 130 tognph. 35 '74 22 22 (*3 *3 *5 '35 79 101 122 9 i6ro 161-4 161-3 161-2 161-2 - 77 - 7'5 - 7-6 - 77 8., 46-0 -3'9 -9'5) 6-1 + 66 Oct. 8-508 9 10-409 O X~o pho 10 Z 7 tograph. '3* o (4 8 '5 59 103 18-2 18-1 18-0 + 116 + i*'3 + 12-9 +|7 + 38-z) + 50-6 M>-ans 4 59 18-10 + 12-27 Means ... *3 10 S 161-22 7-76 ... 56 AREAS AND HEUOGHAPHIC POSITIONS OF OUOUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. Date. Green wicli Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central | Meridian. Date. Greenwich Civil Time. Projected Area of Area for (iroup. Mean Longitude of Group. Mean Lon S iturie T ft J fr m Latitude ., Central of Group. , ; Meridian. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Group 133. Single spot. Group 136. One spot. On November 23 several very small markings appear close behind it. These disappear again on November 27. 1*74-1 Oct. 22-551 o *5 O 21 o 118-3 o -16-2 o -49-0 I874- ,i Nov. 20-492 21 22 2 3-459 24'5'5 25 26 27-514 H No pho No pho 34 25 No pho No pho 4 68 tograpli. tograph. 171 131 tograpli. tograpli. 39 2 5 (24 (22 20 '3 (9 (6 2 II 9 II 4 108 102 6 9 53 37 21 o 72-2 72-8 73-5 74-1 74-8 75-0 75'3 75-6 + 4'4 + 4'i + 3-8 + 3'5 + 3'4 + 3'2 + 2-9 + 27 o Means ... ... O 21 118-3 -16-2 / 3 5 -59-8) -46-1) Group 134. Two rather large spots. The first anil larger spot throws off several fragments on November 7. -32-5 -17-9 - 4-4) + 9-') + 22-5 Means '5 7 8 74-16 + 3'5 Nov. 3-5,2 ' 4-488 S'493 6-575 7-469 g 9-582 10 11-471 12-426 126 164 ,67 118 168 No pho 212 No pho 12 687 896 899 856 997 tograpli. III5 tograph. 289 43 82 95 9 63 94 (125 156 (87 18 o 446 5 l8 4 86 458 557 689 820 636 45' 124 334-6 334-4 334' 2 333-5 334' 6 334-1 3337 334"' 334-4 330-4 -16-2 -16-2 16-4 -16-6 -15-7 -15-2 -14-7 -14-1 -'3-5 16-0 -34'4 -22-3 - 9' 2 + 4'3 + 17-2 + 307) +44' 2 + 57-o) + 69-8 +78-4 Group 137. The spot is seen as a notch in the limb on November 20. Nov. 20-492 21 22 23H59 24-515 25 26 27-514 o No pho No pho 54 39 No pho f No pho 71 40 togruph. tograpli. 375 407 tograph. tograph. 396 (H (28 4 1 24 (28 (33 37 247 259 272 284 251 236 220 20 5 60-2 59'9 59-5 59-2 58-9 58-6 58-4 58-2 + '5'6 + '5'4 + 15-2 + 15-1 + 14-6 + 14-6 + '4-6 + 14-6 -85-5 -72-8) -60-1) 47'4 Means ... ... 81 5'9 333-8o -15-46 ... Group 135. One spot A second small spot appears on the second photograph on November 12. The group entirely changes its character on the following i ays, and on Novem- ber 16 has changed into a very long irregular line, of small spots. On November 23 the greater portion of the group has disappeared round the limb. The area only of the gronp, not its position, was measured on November 17. -33-8 20-8) - 7-8) + 5'i Means 26 247 59-11 + 14-96 Group 138. A line of very small spots. Nov. 12-426 '3-472 . '4 15 16-512 '7'574 18 '9 20-492 21 22 2 3'459 O 37 No pho No pho 131 109 No pho No pho 133 No pho No pho 5 5 158 tograpli. tograpli. 707 466 tograpli. tograpli. Bil tograpli. tograjili. 9' 35 (46 (57 68 55 (66 (77 88 (65 (42 '9 87 '49 222 2 9 5 3 68 234 335 436 537 467 397 326 178-3 1 80- 1 181-0 182-0 182-9 (83-8 184-6 185-5 186-3 187-1 187-9 1887 + 6-2 + 6-8 + /' + 7'3 + 7-6 + 7-6 + 7'5 + 7-4 + 7-4 + 7-3 + 7-2 + 7-i -737 -58-3 -44-0) -29-6) ->5'3 - i-3) + "7) + 26-7) + 40-6 + 54-5) + 68-3) + 82-1 Dec. 7-704 8 9-289 10 11-477 28 No pho No pho 2I 9 tograph. 80 tograph. 35 '4 (7 o < o I I I 83 54 45 36 290-2 292-4 294-5 292-3 290-0 - 5' - 5' - 4'9 - 5'3 - 5'7 + 7'9 + 25-0) + 42-0 + 5''4) + 60-8 Means ... ... 52 321 184-02 + 7-21 Means ... 4 66 291-88 - 5-18 TAKKN AT ( IKKBNWICII, AT HARVAKD, AND AT MRLBOUKNK, IS TIIK YKARH 1874 TO 1S77. 57 Areas ami Hfliographic Position* of Groups of Sun Spots continued. Project*! Are* of Area li.r i|.. Greenwich Civil Time. U^ Spot I'm: r i Whole S|N,t. Longitudv Mean H4M from Longitude Latitude Group 138*. A few imall upots in a straight nil-earn. Dec. 9704 Mean- "5 o 64 O *747 64 *747 12-0 12-0 + 22-1 Group 139. A group of very small apots. Dec. 11-4-- 18 18 240-6 +12-3 +11-4 240-6 +12-3 Kit.-. Greenwich Civil Time, An a ,,| Umbra. Whole Spot 4M I.., Group. Umbra. Whole Spot. Longitude Mean Latitude of Group. Longitude from Central Meridian. Group 140. A very tottered group romponed at first of four spots, a, b, r, ami >/. up on December 14 into several little spots, and two fresh spots Spot d disappears on December 14, Una spot ft on December it. Spot a breaks appear, and/. >74-d Dec. 9704 10 11-477 1*742 '? 121 16 '7-583 18-513 Noph< 83 3*5 92 823 No photograph.! 84 5*7 No pho tograph No pho tngraph 302 '54 22 o Means (3* 59 43 (34 <4 '4 o 3' 162 97 *3* 462 366 269 HS 221 '97 126 248 184-8 184-6 184-3 187-0 185-7 184-3 185-3 186-4 187-4 187-8 185-76 6-0 5'5 5' J' S 67 7-0 7-0 7'3 + 6-48 -677 -56-3) -44'9 -*S'4 -15-2) - S' + 9' 6 ) + 387 + 5I-3 1'HDT" -IlKLIOliRAI'HIC HKSII.TS, 1874-1877. 58 AREAS AND HELIOGEAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Date. Greenwich Civil Time. Projected Area for Area of Group. Lougitudi Mean Jlean r ^IT ..! from Longitude Latitude Central of Group, of Group. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole TT . Spot. Umbra - Whole Spot. Group 141. Single spot. Group 144. A number of spots in an irregular stream. Jan. 2-527 3 4 5'55 53 No pho No pho '9 355 tograph. tograph'. 87 (3* (3' 2 '5 190 ,6 5 140 o 33I-9 33'7 331-5 o -3-6 -'37 -13-7 -13-8 o + 33-2 + 46-2) + 59'3) + 7 2 '4 l875- Feb. 1-773 2 3 4-485 5^57 6-774 7-215 8-699 9-229 O No pho No pho 28 21 38 36 '3 13 122 tograpli. tograph. '47 225 170 215 93 80 o ( 6 7 12 21 2O 8 9 I 5 130 I 10 9 1 127 95 121 59 55 o '97'9 198-0 198-2 198-3 197-9 197-9 '977 198-4 197-4 o + 18-0 + 18-6 + 18-8 + 18-7 + 18-8 + 19-1 + 18-2 + 18-8 -62-6 -50-6) -38-5) -26-5 -11-4 + 3'4 + 8-9 + 29-2 + 35' 2 Means ... 3 2 I 7 8 331-60 -1370 ... Group 142. A group of two or three very small spots. Means 12 104 197-97 + 18-59 Group 144*. A regular spot. Jan. 16-543 10 70 6 4 2 81-2 - 8-9 -33-1 Means 6 4 2 8 I -2 - 8-9 ... Feb. 9-229 10-687 11-205 10 15 39 4 47 O 12 90 4 39 84-3 84-1 84-7 + 5'9 + 5'5 -77'9 -59-0 Group 142*. Two large spots close together, and a few small markings round them. Means 1 2 56 84-37 + 5+7 Jan. 22-530 2 3 24 2 5'554 186 No pho No pho 872 119 559 tograpli. (79 391 tograph. (|o 224 28 o 57 72-4 71-8 71-2 70-5 + 6-2 + 6-0 + 55 + 37-I + 49'7) + 62-4) + 75-0 Group 144!- A small spot. Means ... 60 308 71-48 + 5-88 Feb. 14-019 o 19 o 10 99-8 + 127 + 0-6 Group 143. A small spot, surrounded by a few very small and scattered markings. It becomes slightly more condensed on January 25. Means 10 99-8 + 12-7 Group 145. A very large spot, with two or three small ones near it. Jan. 22-530 32 23 No pho 24 No pho 25-554 o tograph. tograph. 55 '7 (12 (6 o 79 65 52 39 36-6 36-8 37-3 + II-2 + 11-1 + I PI + IPO + 1-3 + 14-8) + 41-8 Feb. 18-448 '9 20-075 21-517 22-527 23-496 25-531 26-558 27-030 28-027 Mar. 1-077 2-209 42 No pho 114 230 2 35 2 37 No pho 229 2 35 164 108 47 148 tograph. 55 1 993 1059 1 iSl tograph. 1218 1157 933 906 5/6 2 73 '34 (130 168 ,46 136 (134 131 '45 108 ,56 123 109 478 542 606 7 2 5 658 679 688 696 6n 73' 654 634 3227 321-9 321-1 320-4 320-2 320-0 320-0 320-0 (320-1 320'! 320-4 320-4 320-1 + I7-9 + 18-2 + 18-6 + 18-1 + 18-2 + 18-3 + 18-3 + 18-3 + 18-1 + 17-8 + 18-2 + 18-3 + 18-2 -78-2 -68-3) -58-4 40-1 -27-0 Means ... 9 59 36-93 + 1 PIO Group 143*. A small spot. -14-4 + 12-4 + 22-4) + 3 2 '3 + 457 + 59'5 + 74' 2 Jan. 26-734 2 7 o 2 7 36-. + '7'5 + 56-2 Means ... 27 36-1 + '7'5 ... Means ... '34 648 320-57 +18-19 TAKEN AT (illEKSWI. II, 1 1 AKVAKI'. AM' Al \lKLBOUKSK, IN TIIK VKAKS 1*74 TO 1877. 59 A !-.!- ami Monographic Positions .if (Inuijis uf Sun Spots contt, Date. Greenwich Civil Time. Projected Area of Area for Group. HM Longitude of Croup. M. , Latitude of Group. Longitude from Centra! Meridian. Date. Greenwich Ciril Time. Projected ArWof Ana for Group. M. ,:. Longitude of Group. Mean Latitude of Group. Longitod. from Central Meridian. Umbra. Whole Spot I';:.' r.i. Whole Umbra. Whole >]-,! Umbra. Whole Spot Group 146. One large spot, surrounded by many small one*. Group I47t. A number of small ipota in an irregular stream. 75-. . Feb. 20-075 W$i7 22' 13-496 *4 *5 53' 16-558 : -030 28-027 Mar. 1-077 2-209 3 97 86 122 No pho 10 3 *9 3<> 21 16 o i! s 601 49' 696 !'i.':.i|.:. 417 26l 99 158 78 16 28 62 4 8 63 (58 53 16 || '5 16 o 73 383 *73 359 287 *'S '44 "9 "4 76 3' o 321-2 321-9 322-0 321 9 321-1 320-3 (3*07 321-1 321-2 321-1 .-2 ti -u-6 -n-6 1 1-2 -107 1 1 2 -n-6 -11-5 -11-4. -11-6 -11-9 -11-7 o -58-3 -38-6 -25-2 '875- d Mar. i -077 2-209 3-266 O 3* 16 6 1*7 161 26 10 1 1 101 103 o 188-5 196-7 196-1 9377 e + 6-4 + 7'4 + 7'4 + 7-07 -;* - 4 -49'* -35 '9 1 3 + o-i) + 12-7 4-23-0) + 33'3 + 46-S 4-60-2 + 76-3 Moans ... ... it 7* ... Group 148. Several small sgiota mng.-d iu a straight line. Mar. 5-446 6-070 7-082 8-884 9-547 10-528 33 34 56 16 46 12 ,64 299 528 ' 9 < * 5 < 106 18 '9 34 '4 5' *7 9 168 3" 163 281 *47 208-2 207-9 207-7 207-3 208-2 211-2 4-16-4 + 160 4-16-1 + 16-3 + 16-5 -r-15'4 + 49 4 12-8 4-26-0 + 49'3 + 58-9 + 74'8 t ana 34 198 3*''34 -11-45 ... Group 146*. A small spot following Group 145. Means *7 212 208-42 + 16-12 rVh. 20-075 o *9 o 49 311-1 4-20-3 -68-4 Group 149. One spot. Mfiins ... 49 311 i + 20-3 Group 147. Two small spota. The preceding spot alone has following and smaller spot derreaaes in size as on March 5 only the preceding spot is left appeared by February 12. The the group crosses the disk, until Mar. 7-082 8-884 9'547 37 o o 267 101 97 *7 '94 136 179 228-7 22 7 -4 225-I -14-8 -16-2 -17-0 +470 + 69-4 4-758 Means . 9 170 227-07 T ... Feb. 22-527 23-496 4 *; 53' 26-558 27-030 18-017 M.ir. 1-077 2*209 3-266 5-446 12 No pho 33 o 3* 25 22 2O 15 No pho O 56 101 ".'I l|'i.. |60 45 184 '54 '37 "7 75 ._-...;.: . 22 o '9 (2. 11 '7 '3 '4 to (5 166 56 '3* 1 08 27 100 79 ti 49 4 3' 267-9 264-6 265-8 266-9 (267-8 268-7 270-5 270-1 270-0 270-4 270-9 271-4 + 5'6 + 5-7 + 5-3 + 4'9 -1- 47 -t- 4'5 + 4-1 4- 4-0 + 3'9 + 4'* + 4-o + J-8 79 3 -69-8 -111) -407 -29-9) -19-1 - 4'* 4- 9-1 + 24-1 + 38-4 + 53'3) 468-1 Group 149*- i One spot regular in shape. It has divided into two parts by March 12, and ia not wen on March 15. Mar. 10-528 "597 12-680 i 3-060 14-644 15-584 16-127 '5 36 12 26 O O '35 *45 120 1 7 6 *7 20 20 3' 8 ,6 o o o 182 213 79 108 '4 10 ?' 4 67-1 66-7 67-4 66- 9 66-0 - 6-8 - 7-o - 7-8 - 7-' - 7'8 9-8 690 -55 '* -4 '3 -35-6 -152 + 3-5 MMDS i i 85 268-75 + 4'57 Means ... ... 1 1 87 66-92 Group 147*. A small spot following Group 146. Group i49t. A small spot 181-9 4- 6-8 + 73'9 27-030 28-027 16 o 64 '4 9 36 9 313-8 -12-1 3139 "I*'' 4-26-0 + 39'' Mar. 12-680 7 o '3 Means 5 -3 3138; -12-10 M'.ms . ... o >J 181-9 + 6-8 60 AREAS AND HELIOGRAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Date. Greenwich Civil Time. i Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole S]K>t. Group 150. Single spot. Group 151. One large spot. 1875. a Mar. 11-597 12-680 13-060 14-644 15-584 16-127 17760 18-570 19-691 20-076 21-207 24 28 3 4 < 46 21 22 II 3 I1O 90 202 275 34 234 89 5 3 27 '7 48 29 28 28 25 1 1 1 1 6 o 2 224 92 1 80 169 1 66 122 4 I 26 ll I? '4 o 46-0 46-9 46-8 46-5 46-8 46-7 47'3 47-i 47'5 47-0 47'5 - 3-6 - 4-2 - 3'8 - 4 -I - 3'9 - 37 - 3'5 - 3'5 - 3-6 - 3'3 - 3'5 o -76-3 -61-1 -56-2 -35-6 -22-9 -15-8 + 6-2 + 167 + 3I-9 + 3<5'5 + 51-9 '875-u Mar. 17-760 18-570 19-691 20-076 21-207 22-725 23-435 24-115 25-448 26-608 27-428 28-530 29-713 '4 55 53 66 92 72 130 99 in 87 5 48 1 1 132 230 38, 38 < 536 432 617 533 546 468 35' 281 87 55 9' 5 57 62 4' 72 55 66 60 4' 57 27 5 2 9 384 363 329 362 247 343 296 325 323 288 330 224 320-8 321-2 321-9 3*>'3 321-2 320-8 320-6 323-1 320-6 320-1 320-0 319-4 3'9'i + l8'0 + '7-5 + 17-6 4-i8-o + 17-8 + 17-9 + 18-1 + 17-5 + 18-5 -j-i8-6 + 18-8 + 19-1 + 18-7 80-3 69-2 -537 -49'2 -34'4 ~'4'7 - 5-6 + 5'9 + 20-9 + 357 +46-5 + 60-4 +757 Means ... 17 9 8 46-92 - 370 Means 56 334 320-78 + 18-16 Group 150*. Some small spots forming s.p., Group 150. Group 152. A number of small spots. Mar. 17-760 18-570 19-691 20-076 2 I-2O7 18 >l 6 '33 >55 59 5' 22 9 21 O 4 o 6 9 85 38 37 '9 in 55'' 57-1 5''3 lO'O - 9'4 - 97 - 9'4 10-3 + 14-0 + 24-2 + 39'5 + 46-6 + 557 Mar. 28-530 29713 30703 31-752 Apr. 1-587 2-460 56 79 56 27 70 384 401 372 219 "7 o 36 29 198 43 221 36 238 o 167 28 : 122 250-6 250-9 252-2 253-2 253-3 2 54'4 + 3'2 + 4'' + 4'5 + 4'4 + 4'2 + 4-5 - 8-4 + 7-5 + 21-8 + 367 + 47-9 + 60-4 Means 7 50 54-64 - 976 ... Group 150!. A small spot, not seen on March 18 ; probably hidden by the wire. Means ... 23 164 252-43 + 4''5 ... Group 152*. A number of small spots in a straight line. Mar. 17-760 18-570 19-691 20-076 8 o o o t 53 o 38 34 4 o o 27 20 18 30-1 3'S 31-2 - 6-5 - 7' - 7-i i ro + 15-9 + 20-7 Mar. 29-713 30-703 31752 8 38 64 '7 64 No pho o 102 162 '95 292 378 tograpb. 87 6 23 34 9 33 ('7 7' 95 103 150 '94 125 55 199-4 2OO'O 201'3 2OO'O 202'! 202-8 203-5 -167 16-5 -44-0 30 4 Means ... i 16 30-93 - 6-87 ... -16-1 i & -152 Group 151*. Two large spots. Apr. 1-587 2-460 3 4'567 I0'2 -15-4 -15-5 -15-5 54 + 8-1 4-227) + 37-3 Means ... 17 113 201-30 -15-99 ... Mar. 20-076 21-207 22725 23'435 24-115 25-448 26-608 o 16 162 1 06 75 o '38 209 188 670 856 363 73 8 1 1 1 S 7 102 70 107 "3 459 702 491 215 5'3 5 '9 8 '9 9-6 9-9 8-9 5'9 -13-7 -13-7 -15-0 -14-1 -I4-3 -14-6 1 -13-9 - 5' 2 + 10-3 + 33'4 +43'4 + 52-3 + 69-2 + 81-5 Group 153. One very small spot. Apr. 4-567 12 1 1 109-3 -13-5 -56-9 Means 44 38 777 -14-19 i ... Means . . . ... II I09-3 -13-5 TAKKN AT (iKKKNWlril, AT HAUVAKD, AXI> AT .M KI.IIOUKNI, IN THK VKAKS 1874 TO 1877. 61 Areas and Hfli< >i:nipliir Positions of Groups of Sun Spots -continued. Greenwich Civil Tun.- .-ted Area for Area of liroup. Longitude of Group. Latitude of Group. Longitude from Central Meridian. DM* Greenwich Civil Time. Projected Area of Aram for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Umbra. Wholr I'mlira. Whole Spot Umbra. Whole Spot Umbra. Whole Sp..t. '875-,, Apr. 5-507 6427 7-667 8-522 9-108 Group 153*. One very small spot Group 1 5 5 rontinuft. '875-.. Apr. 18-517 '9'444 20-581 21-699 1 1 1 58 54 o 508 383 6? 64 38 47 o 2 9 2 252 l\6 10-4 1 0-0 9-6 10-7 o -13-6 -'3'S -130 -13-5 O 428-4 440-2 454-9 477 O 4 5 o 3' 98 105 22 O 2 3 o o 16 5' 59 '7 16 o 484 147-8 148-6 147-8 151-9 4 8-0 4- 7'8 4- 7'4 4 7'9 4 7'5 o - 5'3 + 6-2 423-3 Means 58 36' 10-30 13-80 Means 1 32 148-90 4- 772 Group i 56. One small spot. Group 153!. Two very small spots. Apr. 20*581 2 1 '699 22-659 o 20 57 55 o 30 5' 39 *45'7 246-3 245-8 4'23 4'*'3 69-0 -537 AIT. 10-641 l i 12 13-565 '4'53' No pin) No pho O O 1 10 tograph. tograph. 90 '2 57 (8 64 U 7' o 78 o 79 98-5 99'3 100-1 100-9 99-8 4 4-0 412-5 4 4'6 +26-2) 4 5-2 439-9) 4 57 453-5 4 5'6 465-2 4' 5 Means ... 40 245-93 412-30 Group 156*. Two small spots very close together. M'MIl- 5 70 99-72 4 5-02 Apr. 25*481 26-515 *7'497 28-548 29-582 30-499 May 1-129 2 3-499 4-072 5-482 74 5 62 o 30 No pho 3 27 o 205 219 339 3'5 284 76 176 tograph. 125 73 *3 54 39 49 28 32 o '5 ('7 '9 '9 o 263 84 223 78 '47 38 I 9 84 79 5* 26 182-6 182-6 182-6 182-5 182-2 182-3 181-4 181-6 181-8 181-5 181-7 - 6-1 - 6-1 ~ I' 9 6-0 - 6-2 - 6-1 - 6-4 - 6-5 - 6-6 - 6-1 - 6-8 -67-4 -537 40-8 -27-0 -.36 - ''4 4 6-1 421-0) 437-8 463-9 Group 154. Two small spots on April 10. One spot, regular in shape, on April 13. Has two companions on April 15 ; but on April iS only the chief spot remains. Apr. 10-641 I 1 12 13-565 '4'53 15-671 '6-543 17-470 18-517 '9-444 20-581 o No pho No pho 44 61 36 7' 35 '9 1 1 o 44 BOfnpb. tograph. 84 202 221 301 234 126 63 o ( 8 (16 24 32 '9 4 22 16 '3 o 49 66 83 100 105 "7 169 148 1 06 76 79 26-4 28-5 30-5 3>'3 31-8 30-3 307 337 33-8 353 4 9-0 4- 9-' 4 9-2 4- 9-3 4 9'3 4 9" 4 9-* + 9'5 + 8-8 4 8-7 4 8-3 -61-6 -46-7) -31-8) 16-9 - 3'3 412-2 422*2 434*9 451-7 464-0 + 806 Means ... ... 25 124 182-07 6-25 Group 157. One large spot with several small ones following it U 17 100 30-61 4 9"4 Apr. 26-515 28-548 29-582 30-499 May 1*129 2 3-499 4-072 5-482 6-504 o 82 '55 205 129 '92 No pho "3 128 97 44 237 675 943 1511 '345 1030 tograph. 1292 1010 850 433 204 IOO 127 '33 74 103 (101 99 63 89 89 76 55* 823 773 9! i 773 554 6*3 69 564 59 397 35' 160-0 158-8 1583 158-5 158-1 58-7 159-1 '59'5 159-1 159-8 160-1 159-8 4 87 4 8-9 4 9-6 4 9-6 4 9-5 4 94 4 9-3 4 9'3 4 9"' 4 9-0 4 8-7 -ft-i Group 155. Two large spots very close together. 7 3 -64-6 -51 2 -37-3 -25-6 -16-6 4I5-; + 22-6 442-0 472J Apr. 10-641 1 1 12 '4'53' 15-671 '6-543 '"470 29 ] 239 53 No photograph. (63 No photograph (72 130 762 82 143 768 80 "4 7'8 59 148 662 75 127 634 66 434 450 466 482 429 370 336 330 11*2 10-8 10-4 lO'O 9-8 10-2 10-1 -'37 -'38 -14-0 -14-1 -13-9 -14-3 '43 -74-8 -62-3) -49-8) -37-4 -24-8 - 9'4 4 2-3 414-3 -13-9 Means 88 639 159-15 4 9''9 02 AREAS AND HELIOGRAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Group 157*. A pair of spots following Group 157. Group 161. Three or four small spots close together. i875- Group 158. Two small spots. June 21-678 22-497 23-530 24-483 25-552 26-519 27 - 53i o 60 197 3'3 257 132 72 35 402 1036 >3i8 1216 884 415 o 3' 105 184 181 123 1 06 18 206 55' 775 856 826 611 205-3 207-0 205-6 206-1 205-7 206-2 205-3 - 7'4 - 8-4 - 7' 6 7'7 - 7-0 - 7'8 - 8-0 + 4'5 + 16-8 + 29-9 + 437 + 56-8 + 69-4 May 24-535 o 85 46 zio-6 + '5'5 -15-2 Means ... o 46 210-6 + I5-5 Group 159. One small spot. - 7'4 Means ... 104 549 205-89 7-61 Group 162*. A small spot. May 24-535 *5 26-610 27-644 28-647 o No pho 9 12 S 2 tograph. 44 48 35 35 ( 3i o 27 5 26 6 18 163-0 163-1 163-1 162-7 163-1 + 8-0 + 8-1 + 8-2 + 8-1 + 8-5 -62-8 -49-1) -35'3 -21-9 - 8-3 June 21-678 c 28 o 22 164-9 + 17-2 -48-4 Means ... 2 2 7 163-00 + 8-18 Means o 22 164-9 + 17-2 Group 160. Two spots. This group greatly increases in size on June 3 and following days. Group 163. One spot at first, which breaks up into two on July 3. June 1-542 2-527 3-602 4-532 5-634 6 7 8-532 10-564 11-560 3 45 97 '33 189 No pho No pho 93 No pho 56 46 80 *75 828 884 1014 tograph. toaraph. 818 tograph. 407 242 3 33 58 72 97 (84 (70 57 (59 60 87 79 202 496 478 520 5'4 508 502 468 433 457 60-6 60-5 60-8 60-7 6. -3 61-4 61-6 61-8 61-9 62-0 61-5 -10-5 lO'I 10-8 -107 lO'I 10-0 - 9-8 - 97 - 9'9 io- 1 -10-4 -59'3 -4 6 '3 -31-8 19-6 - 4'4 + 8-5) + 2. -5) + 34'4 + 48-0) + 61-5 + 74' 2 June 27-531 28-611 29-501 30-081 July i 2-426 3-602 4 5-393 6-429 16 20 24 24 No pho 41 29 No pho 22 12 95 163 148 '95 tograph. 197 I 79 tograph. 66 5 2 2i 2O 18 16 ('9 21 15 ('4 13 9 I 7 .63 I I 1 130 116 102 93 67 40 38 63-, 62-5 63-1 62-7 62-9 63-2 63-' 63-0 62-9 62-9 i 1-6 -107 -10-8 10-4 IO'O _ 9 . 6 9-6 - 9'4 - 9'2 - 9'5 -72-8 -59-1 -46-7 -39'3 -23-6) - 7-8 + 7-6 -1-19-6) + 31-6 + 44"9 .Means 62 423 61-28 10-19 Means 17 103 62-94 10-08 TAKEN AT ( IIKKN W1CII. AT HAKVAKH, ASH AT M KI.linUKNE, IX TUB YEARS 1874 TO 1877. II Areas and Hi'li.ixnj.hi.- Positions of Groups of Sim Spots continual. Area of Area 1- r up. Longitude of Group. M. ... latitude roup. Longiui i from Central Meridian. hi-,.. Greenwich Civil Tim.-. Projected Area of Area for ''I'- M. . Longitude "1 Ql ::]. Mean Utitnde of Group. !r> : . Central Meridian. 1T '"" > - Umbra. Whole Spot Umbra. Whole 9ft Umbra, Whole Spot Dmbra. Whole >! (Iroup 163*. A small spot Group 166. Several small spots close together. The group broomes more and more Mattered up to August a, when it ha* completely divided into two parts. June 30-081 o l l 1 1 4*'9 + 9'9 -S9'l l87S-a July 26-519 17-583 28-450 29-472 3'594 31-509 Aug. i '47 3-501 4 5'49* '4 O 48 54 5 40 No pho >33 93 No pho 3* 117 "4 *! 5 364 3*4 310 i">:i.ipli. 848 394 ngnpn. 140 '9 3* 3' 26 20 (49 77 65 (5' 37 17* 95 171 109 167 ,56 3*3 490 269 *35 200 43-8 44'8 447 43'4 45'9 48-2 49-0 49 I 49-6 50-0 50'3 o + 7'9 + 7'9 4- 8-8 + 8-0 + 8-4 4- 9'' + 8-7 + 8-1 4- 8-0 4- 8- + 8-4 -68-5 -53'4 Mciini ... O 1 1 4* '9 + 99 ... (iroup 164. One small sjwt, regular in shape. It has broken up into several S|K>U on July i. 41-0 29-8 -in 4- 1-9 + 57) 4- *9'4 4-4*'9 + 56-4) + 69-9 1875... June 28-61 1 10 29-501 18 30-081 41 .Inly I X'> j'liu 1-4*6 14 53 89 i>7 tograph. 107 5 10 *5 (l 18 28 5' 7* 106 '39 138-1 137-8 1369 '377 138-5 O 4-10-5 4- 9'8 4-10-6 4-11-5 4-11-3 O 4-16-5 4-lS-O 4-34-9 4-5'-*) 4-67-5 Means 37 116 47-12 + 8-33 Group 167. One spot. Means .. 16 79 i37"8o +10-94 Group 164*. Two spot*. Aug. 10-7 1 5 21-461 22-639 23-505 24-682 S75S 26-641 *7'537 18-640 O 17 33 20 O So 9' 103 77 58 55 38 44 *3 22 16 '3 O o o o 102 "5 81 5 3* 28 9 *3 '3 62-3 62-1 62-0 61-1 62-4 61-6 62-6 62-9 617 4- 9'4 4- 8-5 4- 8-2 4- 8-4 4- 9'i 4- 8-9 4- 9' 4- 9"' 4- 8-9 76-8 July 8-596 o 9*595 4' 10-554 61 I i N" i'li" ' z '5 8 5 33 13-644 12 14-640 o 3' *3* *4S t"_r,i|.;i. 1 66 >3* 81 o 28 36 (*7 >7 6 o *7 59 '44 "5 86 69 45 *94'3 (294-1 293-9 193-0 292-1 291-9 291-9 4-15-* -55-1 4-15-4 -4*'4) 4-15-6 29-6 4-16-3 -17-1) + 16-9 - 4-5 4-167 + 9-4 4-16-6 , 4-22-5 /U -67-1 -5'7 -40-1 -24-3 - 9'9 4- 1-8 + '3'9 4-i8j Mr 1113 16 92 *93'O3 +16-10 Meaus ... 7 5* 62-41 + 8-83 ... Group 164!- A short stream. Group 168. One spot July 17-598 o 54 3 153-1 4-14-8 4-21-9 Aug. 2 1 46 1 22-639 23-505 24-682 *5755 26-642 *7'537 28-640 29-480 30-438 31-440 '9 40 7* 28 36 35 54 39 60 37 S 126 240 *93 248 *33 167 256 '77 233 197 97 59 5 62 18 10 18 *7 10 33 *3 12 38* 300 2 >3 161 129 86 128 9' 128 >*3 75 48-3 467 47'' 47'0 47'4 47-6 477 48-1 47-6 48-1 47" 4- 6-9 4- 6-3 + 6-8 4- 7'5 4- 7-4 4- 7'3 4- 6-9 4- 7'5 4- 7-3 4- 8-1 + 7'9 810 67-0 Means ... 30 253-2 4-14-8 ... Group 165. One small spot -55'* -397 -25-1 -13-2 - ''3 + I3T + '4-3 + 37-4 + 5'3 July 24-489 O *5'445 20 39 o o 12 22 107-5 106-3 4-* 17 4-12-1 -31-6 20'2 Means ... o '7 106-90 -(-21-95 I ... Means ... 3' 169 47-57 + 7'*6 AREAS AND HELIOGRAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean LoD 8 itu ' le T . , from Latitude . _. Central of Group. Meridian. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Group 169. One small spot. Group 174. One small spot. The photograph on October i is too dense for the group to be seen. 1*75- Aug. 30-438 1 1 '4 o 306-0 -10-3 -64-7 I875-I Sept. 29-467 3o - 47i Oct. i -06 5 2-423 o o o 46 '9 o 12 o o o o 28 '4 o 20 '3 3-8 4'9 -15-2 1 --8 W- +42-8 +69-7 Means ... ... '4 306-0 -10-3 1 5 8 -14-9 Group 170. Two small spots. Means 16 3-33 -15-30 Group 175. Two spots. Sept. 9-414 10 1 1-670 O No pho o 28 tograph, 59 o ( o '7 25 33 214-6 215-5 216-3 -17-3 -24-3 -16-8 8-6) 16-2 + 7-2 Oct. 2-423 3 47 '5 5-566 6-423 7H39 52 No pho 30 36 H o 3'9 tograpli. 226 I 12 74 '3 27 (23 '9 27 H o 166 299-9 '55 299-9 143 299-8 85 300-7 73 300-3 20 299-6 + 4'7 + 19-8) + 34'8 4-46-9 + 57-8 + 70-5 Means ... \ o 25 215-47 -16-77 - 8-3 - 8-3 Group 171. Three or four very small spots. - 7-0 - 7'4 - 7-6 Means ... 1 8 107 300-03 7-80 Sept. 14-490 15-478 16-426 20 5 1 92 77 58 38 5 o '73 76 43 96-0 9 8 '3 98-5 + 14-8 -75 - 9 + 15-2 -60-5 + 15-1 -47-8 Group 176. Two small spots close together. Means ... 4 97 97-60 + I5'03 ... Oct. 5-566 6-423 o o 21 1 I o 16 1 1 302-1 302-1 + 15-6 + '5'3 + 48-3 + 59' 6 Group 172. Two very small spots. Means o 4 302-10 + I5-45 Group 177. A scattered cluster of very small spots. Sept. 15-478 o 21 1 1 141-7 + 6-0 17-1 Means ... ... o ii 141-7 + 6-0 Oct. 5-566 6-423 7-439 8-705 g^IS o 47 o o 50 20 I 7 50 I I 34 o o 27 12 122 58 2O 275-2 277-8 275-2 277-5 278-1 + 12-4 + 11-6 + 12-4 + IT2 + H-6 + zr 4 + 35'3 + 46-1 + 65-2 + 75'' Group 173. One spot surrounded by several very much smaller ones. Means ... / 48 276-76 + 11-84 ... Sept. 27-546 28-722 29-467 30-471 Oct. 1-065 2-423 26 42 47 62 o I 5 8 366 2 9 2 232 148 95 18 24 2 5 32 o ii i 213 '57 120 77 53 317-7 316-8 3'9"3 318-7 318-1 3'7'5 - 8-4 -41-9 8'i 27-2 8-i 14-9 - 7'8 - 2-3 - 7'8 + 4'9 - 7'3 +22'3 Group 178. Two very small spots. On October 10 one of the two spots has disappeared Oct. 9-415 10-457 o 1 1 23 57 o 6 1 2 32 215-2 214-5 o-o + 0-6 + 12-2 + 25-3 Means ... '7 1 22 318-02 - 7'9 2 Means ... ... 3 22 214-85 + 0-30 TAKEN AT GUKXWICII, AT HARVAKP, AXl> AT BlKLBOUKXK. IS T1IK YlABS 1874 TO 1877. \ MS iiml Ili-lio^iaptii Positions of Groupa of Sun Sjnjts euntin l-rojectod Area of Area for ,ip. Mm HIM Longitude Latitude of Group, of Group. Longitude from Central Meridian. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Croup. HIM Latitude of Croup. Longitude from Central Meridian. i Tim.). ,. , , Whole 1 rnl.r.. .. Whole t ml.ru. ^^ Umbra. Whole Spot. Umbra. Whole Spot. Croup 178*. A short stream. I875-.I Nov. 18-410 19-401 20-539 21 23-498 26-082 27-077 Group 182. A stream of spots. '875 ., 18-113 37 o 146-5 e O 76 57 104 No |>l>" 7* 57 No pho 26 9 O 307 325 39' tograph. 3'2 tograph. '34 86 4* 49 3* a 38 34 (32 >3 '97 182 20 1 184 166 ,36 '43 '49 "5 '34 o 358-0 3577 359-3 3 59-; 3597 ro 2-6 4-' 4-0 a - 77 - 7'2 - 7-0 -6-9 - 67 -6-9 6'2 - 54 - 4'9 - 4'7 -37-6 24/8 Me.tn- 39 146-5 -ii 6 - 8-2 + 4;s) + 477) + 62-9 + 69-6 + 81-2 (Iroup 179. A small spot. 21-402 43 22 37-6 + 11-2 - 7'3 Means ... 33 162 0-84 6-36 ... .::* ... O 22 37-6 + ..-. - Group 183. Cluster of two or three small spots. (Iroup 180. One large spot. + IO-8 + 1 ro + 10-4 + 10-7 + 11-2 + 11-3 + 1 1-5 + 11-6 + 10-7 + 10-9 Nov. 19-401 10 20-539 23 2 1 No pho 22-429 10 23-498 o 5' 1 10 tograph. 35 '9 7 '3 ( 9 5 36 63 4' 18 10 3397 3397 3397 34 ''4 + 107 -44-2 + 10-4 -27-8 + 107 -15-4) + 10-9 - 2-9 + 10-1 +12-9 Oct. 25-476 75 419 26-415 61 376 27-112 89 592 28-066 97 563 29-042 85 831 30 No pho tograph. 31 No photograph. Nov. 1-665 113 672 2-386 130 479 3753 57 388 90 52 62 58 45 J59 65 83 50 5>5 3'9 4'4 335 44* 4*4 405 386 305 343 285-3 284-9 285-0 284-7 285-1 285-0 285-0 284-9 284-8 284-5 -65-9 -53'9 -44-5 -32-3 19 o - 3-') + 12-8) + 28-6 + 38-0 + 557 Mi'uns 7 34 33976 + 10-56 ... Nov. 25-572 26-082 Group 183*. Four very small spots. 4 IS 21 8 308-3 307-6 + 15-0 + '4'5 + 7-1 -I- 1 3'* Means ... 6t 388 284-92 + 11-01 Group 180*. A regular spot with a small companion on October z8. Means ... o I S 307-95 + '475 ... Group 184. Two large spots, with several very small ones between them. A somewhat scattered group. The group lireaku up into two on November 13. Oct. 27-112 8 29 28-066 12 6l 29-042 o 32 5 9 o IS 46 33 4'4 5'' 5'9 + 13-8 + 14-2 + 48-1 + 61-8 Nov. 20-539 21 22-429 23-498 26-082 Z7-077 28 29-096 30*108 21 No pho 101 Il6 No pho 78 5 40 No pho 39 *5 93 L tograph. 496 tograph. 465 304 325 , togntjih. 2 7 6 |68 63 (52 4 26 23 35 J! 101 84 267 269 254 239 '59 188 219 *J4 305-4 306-1 306-7 308-5 308-9 309-2 309-2 310-1 310-4 3' 7 310-2 - 8-2 - 8-1 - 7'9 - 8-0 - 77 - 7'3 - 6-6 -6-3 6-0 - 5-8 -62-1 -49-o) Mean- 5 32 5'3 + 1407 Group 181. One small spot. 6-0) + 8-0 + 14-8 + 28-8 + 68-8 I T4I 5 o 7 9 142-0 + 17-1 + 66-9 M.:ins o 9 142-0 + 17-1 ! ... Means 39 *'5 308-67 - 7''9 PHOTO-IlEr.IOCRl.rHIL llESfLTS, 1871-1-77. 66 AREAS AND HELIOGRAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots contimwd. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Date. Greenwich Civil Time. Projected Area for Area of Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole T Spot. Umbra - Whole Spot. Group 185. Single spot. Group 1 88 continued. O 131 o 38 o 17 o 22 7' 23 12 27 359' 359-8 357-8 358-6 o - 6-3 6-0 - 6-1 - 6-3 + 21'2 + 45'7 + 66-1 I87S.4 Nov. 20-539 21 22-429 24 25-572 26-082 27-077 No pho 21 16 No pho 29 8 o 21 tograph. 6l 9 1 tograph. 7 6 74 16 (10 '9 ii ('3 15 4 o Si 69 56 62 5' 40 38 8 284-7 285-5 286-2 286-2 286-2 286-1 285-8 285-6 o + 11-6 + 11-7 + U-8 + 11-4 + 11-3 + 11-3 + 11-6 o -82-8 -69-6) -56-4 -42-3 -287) -15-1 - 8-6 + 4'3 '875-d Dec. 20-108 2 I '08 I 22-063 23-55 Means 7 57 358-63 - 6-46 Group 189. One large spot. Means ... 9 5' 285-79 + ..-5S ... Group 1 8 6. One small spot. Dec. 15-074 16-071 18-026 '9 20-108 2 I '08 I 22-063 23-55 24-540 13 3 69 No pho 3' 56 52 26 i'4 39 287 4' 465 54 467 36 tograph. (26 340 1 6 341 25 297 29 277 3 1 19 i 8 345 388 366 322 200 178 '74 '54 161 84 3237 323-0 322-4 322-8 322-9 323-0 322-3 323-2 322-3 3237 -12-9 -12-7 -11-4 12-3 80-5 -68-1 42-6 Dec. 14-449 o 21 o 1 1 58-4 + 16-2 + 6-0 Means o ii 58-4 + 16-2 ... -u-8 -11-3 i i-i 10-8 10-2 io-6 -287) 14-8 Group 187. One small spot. 2 7 + 29-8 + 44' 2 Dec. 14-449 '4 1 O IO 8-3 - 6-0 -44-1 Means ... 31 237 322-93 -11-51 Means ... O IO 8-3 6-0 ... Group 189*. A small spot. Group 1 8 8. Group of three or four spots ranged in a line. Dec. 17-497 18-026 '9 42 32 No pho 134 22 207 l6 tograph. (8 70 105 88 359-0 - 6-8 - 6-6 -15-0 . fi'C Dec. 30-087 3 34 3 33 265-2 - 77 + 587 5 + 7-4) Means 3 33 265-20 - 770 TAKKX AT GREENWICH, AT HAHVAKD, AND AT MKLBOUKNK, is run YKARS 1874 TO 1877. 67 Areas ami Hcliojjrapliir Positions of Groups of Sun Spots continued. Projected Date. Ana of Are* for up. Longitude of Group. M.-..M Latitude of Group. Longitude from Central MeridUn. Date. Greenwich Civil Time. Projected Ana of Area for up. Longitude of Group. Latitude of Group. Longitude uum Central Meridian. Civil Time. Umbnu Whole Spot Whole Umbra. Whole Spot Umbra. Whole Spot Group 190. Scattereota. 1876.,, Jail. 5-487 4 16 o 81 6 o 40-6 1876.,, Jan. 20-711 21723 22-472 23-521 O O O O ,56 66 20 *5 O O O O I 3 8 45 12 '3 o 215-8 125-8 226-6 226-9 -13-9 -55-9 -41-5 -31-9 -I 7 -8 . ... 16 81-6 -5-' ... 1 3 3 12-1 -12-7 Group 190*. A short stream. Means ... $ 216-18 -13-03 Group 194. Scattered group of small spots. A change of shape is seen on January 14. Jan. iro72 6 12-052 o 59 4* 3 3' *4 59-2 60-5 + IO-I + 10-4 + 10-6 + 14-8 Jan. 21-723 22-472 23-521 24-466 25 511 26-688 27-496 10 22 109 74 o o "5 *5 219 454 348 85 39 5 13 78 7' o 59 '3 '3* 320 335 118 96 *74'* 270-9 *777 176-5 *77'S 272-6 171-8 -13-8 -15-1 -15 I -15-5 -17-0 + 5'9 + 12-4 + 33-0 + 44-3 + 59-0 + 69-6 + 79'4 Means ... 2 28 59-85 + 10-25 Group 191. Scattered group, but with two principal spots. Means ... *4 '53 174-46 -15-21 ... Group 195. Single spot Jan. 18-526 n 19-503 68 20-711 o 21723 o 22-472 4 47 262 200 109 192 6 26 42 162 o 153 III 6 291 330-5 3*9'5 3*7-5 326-7 3*7-5 + 11-2 + 11-1 + 12-8 + 12-8 + M-7 + 20-0 + 3'-9 +45-8 .+58-4 + 69-0 Jan. 19-445 3 Feb. i 2-514 3 4'457 o No pho 12 No pho 9 No pho 1 *5 to.-i iph. 43 tograpli. lograph. 11 o (5 IO (8 5 (3 i 62 49 35 30 *S 16 6 87-9 88-2 88-4 88-3 88-2 88-3 88-3 - 7-7 - 7-8 - 7'9 - 8-0 - 8-0 - 8-3 - 8-5 -78-8 -51-9 -25-1 -12-2) + 0-7 M'MllS n 149 3*8-34 + 12-14 ... Group 192. Single Urge spot, but several smaller spots an seen on January 19 Means ... ... 5 3* 88-23 8-03 Jan. 18-526 32 19-503 109 20-711 99 21-723 82 22-472 100 23-521 89 24-466 94 25-511 85 26-688 o 27-496 27 28*099 Io *9'445 o 176 684 5*' 5*4 500 496 478 457 150 60 4' 49 105 67 47 53 45 48 46 20 9 266 658 35* 301 266 *5* *44 *47 '35 no 11 239-2 238-5 239-7 239-8 *397 *397 239-6 *397 *39'4 239-6 *39'3 139-8 -10-7 I I-I 12-0 -11-7 I2'O 12 1 -12-3 -I2- 4 -I2- 5 -13-9 -71-3 -59-1 -42-0 -28-5 -18-8 Group 196. Single Urge spot. + 7'4 + 21-2 + 47'* +54-8 +7S-I Feb. 10-445 n 12-679 '3-559 14-564 15-083 16674 4 No pho 123 **5 *59 '7 106 tagraph. 763 1029 1209 '4'5 '4 (59 104 '5* '49 97 107 377 I' 2 647 695 695 642 711 285-8 285-4 285-1 (185-2 285-2 285-5 (285-7 -n-6 -12-5 ->3'4 -13-2 -12-9 82-9 -68-6) -54'* -4'7) -29-2 22-1 - 8-6) Means 41 246 239-50 1217 ... 13-0 -13-1 T88 AUEAS AND HELIOGHAPIIIC POSITIONS OF GKOUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS .Areas and Heliographie Positions of Groups of Sun Spots contiiun'/l. Date. Greeowicli Civil Time. Pi ejected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Date! Green wich Civil Time. Projected Area of Area for Group. JIuun Longitude of Croup. Mean Latitude of.Uroup. Longitude from Central Meridian. Umbra. Whole Spot. Umbra. Whole Spot. Whole . Umbra; s t Lmlira. Whole Spot. Group, 1 96 continued. Group 199 continued. i8;6. |d Feb. 17'! 08 18-414 "^9'532 "ZO 21-689 22-446 232 '94 180 No pho 22 4' 1388 944 860 togntph. 34' 184 117 106 113 (70 26 74 701 5,6 541 47' 401 334 j o 285-9 286-4 286-5 286-4 286-2 285-7 o -13-3 -'37 -3-8 -I3-5 -13-1 -14-3 + 4'9 + 22-6 +37-4 + 5''5) + 65-6 + 75' 1876.,, Mar. 13-633 I4 ; 56o 5-565 16-448 '7'474 18-511 34 33 20 4 108 I 12 73 32 22 '3 18 17 10 2 O 58 57 37 '7 '3 9 o 284-7 2847 285-1 284-5 2847 284-6 o -"'9 - 1,1-8 I1 4 2 -I2'4 -I2- 5 -12-8 o 2O'O - 7-8 + 5'9 + 16-9 + 30-6 + 44'2 Means -... ... 91 557 285-77 -13-18 Means 11 51 284-66 II-8I Group 197. Somewhat scattered group of very small spots. . Group 200. Scattered group. A great change is seen on March 17. Feb. 26-425 27 28-558 29-593 Mar. 1-074 24 No pho 32 17 17 139 togiapli. 121 '53 243 '7 ('7 '7 9 9 97 ii 65 so 128 1 17-2 117-2 117-1 115-9 117-2 + 9'9 + 9'6 + 9'3 + 9'5 + 9'3 -41-1 -27-1) -13-' - 0-6 + 7-' Mar. 13-633 14-560 15-565 16-448 '"474 18-511 19-688 20-485 21-117 36 55 58 85 35 3 4 8 5 170 I 99 '77 302 2/3 104 101 84 46 45 49 40 52 20 16 5 3 2'5 176 123 185 '54 56 57 5 3 241-2 241-4 241-0 239-8 237-8 24'"3 240-3 240-7 240-1 + I 5 -1 + 16-1 + 15-2 + 15-6 + 15-2 + 15-0 + '4'5 + 13-0 + '4'4 -63-5 -51-1 -38-2 -27-8 -16-3 + 0'9 + I5-4 + 26-3 + 34' Means '4 9 I I6-Q2 + 9-52 " Group 198. Single small spot. Means 26 116 240-40 4-14-90 Group 201. Small g?oup, principally consisting of one spot, the smaller spots disappearing on March 20. Mar. I -074 2-595 26 4 '25 32 '5 2 72 16 80-0 8l- 5 - 5'6 - 5'2 -30-1 - 8-6 Means ;.. ... 9 44 8075 - 5'4 Mar. 15-565 16-448 ' 7>74 18-511 19-688 20-485 21-117 22-534 23-652 24-456 o 10 88 77 80 32 10 8 o 7 53 34' 238 239 96 54 27 3 '5 8 57 43 4 * 1 Q 8 43 220 132 122 48 28 16 22 '4 214-5 215-4 214-6 215-0 215-1 22O'2 219-7 220-1 219-8 220-4 - 6-2 -647 Group 198*. A few very small spots, not far apart, some of which disappear on March 7. 5'7 - 6-3 - 6-1 - 67 - 6-3 - 6-2 ~<' 4 - 6-7 - 7-0 52-2 -39-5 -25-4 - 9-8 + 5-8 + 13-6 + 32-5 + 47'2 + 58-4 Mar. 6-411 7-410 24 8 58 3 16 7 39 26 79-0 79-8 + 7'i + 7'2 + 39'' + 53-I Means ... IZ 33 79-40 + 7-15 Means ... 18 65 217-48 - 6-36 ... Group 199. Single spot. Group 202. Single spot. Mar. 9-425 10-545 11-478 12 8 18 "9 No plio 53 85 88 tograpli. 15 18 14 (16 IOO 86 66 62 2847 284-2 2847 284-7 10-9 -11-4 -"'5 -11-7 -75'5 -61-2 -48-4 -34-2) Mar. I7-474 18-511 I 21 16 I o 18 10 198-8 2OI-4 -13-2 -13-1 -55'3 -39' Means ... ... I H 2OO'IO 13-15 TAKEN AT GlIKK.NWK II, AI H.\|:\A|;I', AND AT .MKLBOUKNi IN TUB YKAH8 1874 TO 1*77. 69 : i Ili-liii-jrai'liii' I'lisitimis i.f Cmujis nf Sun Spots c< !>,-.- iwioh Tim*. I'ruj. Area of Area fur up. M. Loiixitudt of Group. M. .1, i Latitude of Group. jtitud from Central Meridian. li.ii.-. Greenwich ''ivilTime. Projected Area, of Area for Group. M..U, Longitude i.f Group. Mean Latitude of Group. Longitude from Central Meridian. Umbra. \\ ,.:. S|.,t. Umbra. W!,,,le >,..; Umbra. Whole Spot. Umbra. Wl,..!r S|H,t. 2 59 61 28 *3 o 9* '79 210 77 122 38 (',[,.!! >.-itr. i 3 48 40 '4 ii P *3- Ml griiup. 121 22 9 37 9 63 '9 o 172-1 172-1 174-2 175-1 '74-9 177-8 - 8-9 10-2 - 9-0 - 9'5 Group 106*. A group only seen close to the weat limb. I8 7 6.., Mar. 18-511 19-688 10-485 in 17 "534 23-652 -68-3 1876. A Apr. 6-676 O 35 99 e 266-3 -19-5 -81-3 -40-2 -309 -127 + 5-* Means ... O 99 166-3 -19-5 ... - 7'9 - 66 Group 207. Very small single spot. Means ... ... 20 1 10 174-40 8-68 ... (iroup 204. Scattered group, consi>tini: prinri|lly of two large s|tA. Apr. 8-527 9-555 O O *9 if O O 9 9 l8 7 -8 188-5 + 14-0 + '3'9 -35'4 2I'I Means ... ... o '4 188-I5 + '3'95 ... Mar. 20-485 21-117 "'534 23-652 2 4'4;6 f*44 26 17087 28-673 29-589 30-466 4 35 136 89 164 148 Nopho 53 9 5 5 '7 7i 785 714 863 818 tograph. 560 34 182 7* 64 37 57 51 89 80 (57 33 6 7i 39 *75 292 522 i 469 44* 396 35 266 2 F 189 145-0 146-8 152-1 151-8 '53'9 '53'9 155-2 .56-4 57-5 160-5 159-6 + '3'9 4- 13-* + '4'9 4-I4-5 4-148 + I4-9 4-14-8 4-14-6 4-147 4-15-' 4-14-8 -69-4 -59'3 -35-5 20-8 - 8-1 + 4-5 + 11-8) + 19-1 + 5''i + 66-1 + 76-9 Group 208. Group of small spots. Apr. 9-555 10-667 "'453 12-682 13-051 O o o 11 o 8 67 5' 122 *9 o o o 6 o 7 43 30 65 '5 260-I l6O'O 258-5 259'3 2597 + 12-2 + 115 + 11 3 ..+ 117 + 11-3 -49'5 -34-9 26-0 - 9-0 - 37 'ins ... 62 35* 153-88 -H4-S6 Means ... ... I 3* 159-51 + 11-60 ... Group 205. Single small spot. Group 208*. Group consisting mainly of one small spot. r. 22-534 23-652 H'4>6 *5'4'4 8 '3 5 2 4 38 47 3' 8 24 7 8 29 8 17 128-8 129-4 129-6 130-2 + 7'8 + 7-5 + 8-0 + 8-3 -58-8 -43'2 -32-4 -19-2 Apr. 14-611 15-508 16-537 22 '4 86 to 11 7 46 24 8 221-7 221-1 2177 -6.5 6'i - 6-5 2l'I - 9'9 4- 03 Mi-ans ... ; ... ... 6 14 129-50 + 7'9 Means ... ... 6 26 210-17 - 6-37 (Iroup 205*. A small spot following Group 204. Group 2o8f. A short stream of small spots. Mar. 29-589 30-466 2 O 21 12 2 O Ii '4 '45'3 '44 '9 + 13-6 + 13*0 + 51-0 + 62-2 Apr. 13-051 It 5' 6 26 272-4 4- 2-6 + 9-0 Means ... ... 6 26 272-4 4- 2-6 ... Means ... I 16 145-1 + 13-30 (Jroup 208 J. A small faint spot Group 206. Very small single spot. Apr. 17-661 '8-558 o 115 o 38 o 59 '9 I91-0 32 192-1 - 3'I Apr. 4-412 4 4 3185 -14-0 -59-0 -11-5 + i-4 Means o 4 318-5 -14-0 ... Means ... ... o 39 I '9*-55 - 3'' ; 70 AREAS AND HELIOGRAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots eonHnnfil. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Group 209. Fairly large spot, with a .small one at a little distance, the latter almost disappear- ing on May 10. Group 211. Group of small spots. 1876.,, July 3-599 4-566 22 9 56 16 o 64 54 o 308-0 309-5 o I 1'2 I0'6 o + 43'2 + 57-6 1876., May 7-589 8-468 9-483 10-463 11-475 12-576 I3-45 1 '4 15-563 73 7i 57 5 43 52 39 No pho O 250 248 265 2I 3 '74 206 189 tograph. II 67 5 34 28 22 27 22 (II O 229 I 7 6 I 5 8 112 8 9 108 1 06 58 9 242-6 243-3 243-1 244-3 245-3 245-6 245-6 245-6 245-5 o -13-6 -13-3 -'37 14-0 o -56-6 -44-3 -JIM 16-9 Means 8 59 308-75 10-90 \ 14-6 -15-0 -15-1 -15-2 5 + 12-3 + 23-9 + 37'9) + 5'-8 Group 212. Group consisting mainly of three fairly large spots, of which two disappear on July 7. Means 2 9 116 244-54 -14-30 ... July 3-599 4-566 5-578 6-573 7-407 8-463 9 10-545 72 28 4' '9 3' 35 No plio 9 323 276 2 33 126 127 88 tograph. 35 67 20 24 10 16 18 "J 299 196 138 6/ 65 46 35 23 208-4 208'2 207-9 208-4 208-9 2IZ-0 2II-5 210'9 - 6-7 7*e -56-4 4V7 Group 209*. A small group. _6-i - 6-0 - 5'5 - 8-0 - 7-6 - 7-z -30-7 -17-1 - 5-5 + ir6 + 24-9) + 38-1 May 25-588 26*639 27-589 o O 6 33 33 34 o 4 55 3i 24 348-7 349' 6 35-3 i o-o - 9'3 - 9'2 -72-4 -57-6 -44'3 Means ... 22 109 209-53 - 6-86 Means ... ... i 37 349'53 - 9'5 ... Group 213. Group of small spots. Group 210. Single small spot. July 7-407 8-463 9 10-545 "'575 23 No pho o '7 139 tograph. 8 44 12 (6 10 73 39 4 25 lSl'7 183-0 182-7 182-3 1867 + 0-4 -327 - 0-3 -17-4 - 0-2 - 4-0) o-o + 9-5 - I'9 +27-5 June 21-440 22-575 23-580 24-689 o 8 9 o 2 9 26 39 38 o 6 40 22 25 21 357-2 357-8 357-9 358-4 + 0-6 - 0-7 - - 5 - 0-8 -68-5 -52-9 394 -24-3 Means ... 4 3 183-28 0-40 ... Means ... ... 3 27 357-83 - '35 ... Grouu 214. Single small spot. Group 2 1 o." A very small spot. July 6-573 5 56 '4 8 o 3 56 1 1 5 165-1 I65-3 165-2 + 9'3 + 97 + 97 60-4 -49-1 -35'2 Juno 26-432 o ii 6 25-5 - 7'9 + 2 5'9 7-407 8-463 Means ... o 6 25-5 - 7'9 ... Means ... i 2 4 165-20 + 9'57 ... A Group 2 1 of. short stream of spots. Group 215. Single small spot. o 9 o o 64 52 '4 17 o 6 58 36 8 9 356-6 35 6 7 357-3 357-9 + 3-o + 2-6 + 2-3 + 2-4 -56-5 -43-5 -29-4 -I7-4 June 27-580 28-586 29-094 12 31 70 58 126 o '5 5 58 76 209 37'i 38-6 37-2 + 6-9 + 6-1 + 6-8 + 527 + 67-5 +72-8 July 19-591 20-571 21-594 22-451 Means ... . 22 "4 37^3 + 6-60 Means ... 2 28 357-I3 + 2-58 1AKKX A I (iKKKNWICII, AT llAKVAKD. AND AT MlCLBOUKNI, IN THE VlAKS 1874 TO 1S77. 71 Aiv;us itnil Reliognphk l'>iti'>n* of Croups of Sun Spots continued. l>te. wicli Civil ; I'n.jeeUd Ana of Area fur Group. Mm Hw Longitude Latitude of Group, of Group. Lougitu.l frmn i ,-ntral M.-riilian Date. Greenwich Civil Time. Projected Ana of Area, for droop. Mean | ,,,., ,..,!,. Mean Latitude of Group. -. turn Central Meridian. l'iiil>ra. Wl,..le S|H>t. I'mlir*. \Vl,,,le S|>t. Umbra. Whole Spot Umbra. Whole Spot lAragiioiw of Group. Croup 2l6. Single >nill spot. Group no continual. No pho 7 O tograph. 87 ll (7 7 86 89 *7 o 303-1 302-6 300-9 10-5 10-6 - 9'9 + 4^5) + 58-1 + 68-3 1876.,, July 10-57 1 *''594 9 o 1 9 o 22 4 342-1 343'* - 7'4 - 7'S O -58-1 -43-5 876., Aug. 17 28-588 29-481 .1118 ... 5 '3 341-65 - 7'4S ... Means ... ... 11 6? 301-46 9-80 Croup 117. la .!"!. It is not wen on July 29 but a number of spots in a short stream mark its plaoe on July 31. Croup 211. Two small spots, one of which breaks into small fragments on September i, and finally duap|*ar>i on September 5. July 11-594 -45' '3 24-580 *> 493 26-495 *7'+33 28-587 19-578 3 31-116 '9 2! No pho ll 39 36 3' o o No pho Q 7' 96 tograpli. 1*7 '79 126 80 3 o _ i: li ll 3* *3 ('7 I I 22 '9 16 o o (o 7 121 102 9 78 100 66 4* 17 7* 315-1 315-0 315-1 315-2 3>47 315-1 3'5'3 3157 3'3'9 -10-3 - 9'9 -10-5 -10-5 -107 1 I-O -10-5 -10-4 -71-6 60-3 -46-1) -31-9 -20-4 - 6-7 + 5 'f + 21-6 ...) + 53'* Aug. 30-582 31-451 Sept. 1-599 2-649 3 4-588 5-582 3 3' No pho O O I 9 81 129 320 tograph. 1 8 '4 17 o (o o o S 44 70 ,89 136 83 9 101-5 199-8 202-2 202-5 202'2 20f9 198-4 -129 13-6 -13-1 -11-8 -'3'4 -139 -13-3 -,6-5 - 67 + 10-8 + 15-0 + 37-5) + 50-0 + 59-6 Mi-ana ... 6 83 201-21 -13-29 ... '3 63 315-01 -10-54 ... Group us. Single spot Group ti 8. Single small spot Sept. 18-440 O 20 o 3' 41-0 + 11-4 + 7* - o I Aug. 7-460 o 74 87 129-2 + 10M +65-6 Means ... ... 3' 41-0 + 11-4 ... ' Means ... o 87 229-20 + 10-10 Group 123. Two small spota. Group 219. Two spots. Sept. 14-588 5745 16-581 i? 18-440 30 57 3* No pho 63 168 1 9 7 1 7 6 .-i.ij'h. *4 28 39 <3 33 '57 ' 3 < 1 06 116 126 32 4 -l 324-0 324-2 3*3-9 313-6 - 9'3 - 9'S - 97 ~ 97 - 9-6 -556 -40-5 -29-4 -17-4) - 5'4 Aug. 16-499 "7-465 18-681 19-686 O 70 16 '9 5 93 '99 '53 o 46 9 10 4> i*7 in 80 354'' 353-3 353'* 353'' - 8-1 - 7'z - 7-o - 7-4 50-0 38-0 22'I - 8-8 Means ... ... *9 128 323-98 - 9 56 ... Means ... 16 90 353-43 - 7-43 Croup 224. Two spots of nearly equal size, of which the preceding spot grows larger, and the following spots smaller on October 4 and 5. Group 220. Only one spot is seen at first, but a second of equal size appears on August 15. Sept. 27-586 28-465 2 9'495 30-587 Oct. i 2-578 47 no '95 89 No pho 49 488 505 728 737 togiaph. 45* 39 ll "J 47 (37 26 403 34" 4*' 39 3>$ *39 157-1 156-4 156-0 '54'9 156-4 57'9 ~ 5'9 - 6-3 - 64 - 62 - $6 - S'o -51-2 -40-3 -27-1 -13-8 + 0-8) + '5'4 Aug. 22-587 *3'43 *4 25-586 26739 7 79 22 74 No pho to^rajih. 62 177 11 129 4 12 (l 34 7 45 f 69 97 83 300-5 299-2 300-4 301-5 303-S - 9'" - 9'4 - 9'3 - 9'* -104 -23-1 -13-7 + '-9) + I7-S + 347 72. AREAS AND HKLIOGRAPHIC POSITIONS OF GROUPS OF SON SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots cwi/l/ixed. Date. Greenwich Civil Time. Projected Area for Area of Group. i Mean Mean Longitude Latitude of Group, of Group. Longitude from Central Merid'an. Date. Greenwich Civil Time. Projected Area for Area of Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole . Spot. Umbra - Whole Spot. Group 214 continued. Group 227*. A group seen only near the east limb. 1876.,, Oct. 3-585 4-544 S'443 6-565 48 56 52 23 409 257 194 89 28 39 46 34 238 1 80 I 7 2 >3i 1577 '59'5 '59'4 I59-3 - 4-9 - 4-4 - 4-4 - 4' 1 + 28-5 + 43' + 54'7 +69-5 1876.,, Nov. 13-657 o 78 o 66 254-0 - 5'o o -53-5 Means o 66 254-0 - 5-0 Means ... 49 283 157-46 - 5-32 Group 228. Single spot. Group 225. Scattered group. Nov. 13-657 14-582 15-518 16-497 o 39 25 10 6; 144 9 6 52 o 34 i7 6 84 125 65 30 240-0 240-5 240-8 240-9 + 2-6 + i'5 + I'2 + 1-0 -67-5 -54-8 -42-2 -29-2 Oct. 11-559 12-498 13 '4 '5 16-052 17-468 18-070 4 55 No pho No pho No pho 4 81 4 34 189 tograph. tograph. tograph. 222 389 93 2 2 9 (31 (32 (33 35 144 '4 18 99 123 '47 171 '95 694 33' 17-7 17-2 17-4 '7'5 17-6 17-8 18-5 18-9 IO'2 10-6 10-4 10-2 I 0-0 o - 6-2 + 5-6 + '7'5) + 29-4) + 4I-3) + 53-i +72-5 + 80-8 Means '4 76 240-55 + 1-58 - 9-8 - 9'4 lo-o Group 229. Two spots of nearly equal size. -63-9 Means 40 222 17-83 10-08 Nov. 15-518 16-497 <7 18-080 19-493 20-097 2 I -O2 I 79 72 No pho 32 80 16 8 238 261 tograph. 177 306 122 I2 9 94 61 (40 '9 42 8 4 285 219 163 1 06 161 63 67 219-1 218-4 218-5 218-6 218-6 219-9 22O"2 -II'3 -II- 5 11-2 10-8 10-9 10-9 10-9 Group 226. One large spot and two or three small ones. -51-7 -41-1) -30-5 I2'O - 2-7 + 9-8 Oct. 19-469 20-083 21-079 22 23-220 24 2 5-I93 26-049 27-080 53 28 5 2 No pho No pho 44 29 25 262 288 322 tograph. 439 tograph. 215 .36 141 62 26 39 (35 3 (27 24 17 17 308 270 234 238 241 179 116 79 95 217-1 216-3 215-2 214-8 214-4 215-8 217-2 217-9 218-1 -'3-4 -12-7 -12-8 -62-5 -55'2 -43-2 Means 38 152 219-04 1 1-07 I2'8 -12-8 -12-7 -12-7 -12-4 -12-5 -29-5) -15-8 - '-4) + 13-0 + 25-1 + 38-8 Group 230. Single spot. Nov. 19-493 o 16 o 26 302-3 - 8-0 +71-7 Means ... ... 3' 196 216-31 12-76 Means o 26 302-3 - 8-0 ... Group 226*. A stream of spots. Group 231. Single spot. Nov. 2-648 3752 4-664 53 32 23 221 308 123 34 29 36 '43 271 172 131-8 I33-3 135-3 + 10-9 + 10-4 + 10-5 + 39' 2 + 55'2 + 69-3 Dec. 18-045 19-248 2O'I l6 21-103 22-549 23-066 24 25 26 27-020 28 29-053 37 55 95 72 171 85 No pho No pho No pho 107 No pho 48 I 7 8 445 579 257 1281 532 tograph. :ograph. ;ograph. 6 3 I ;ogrsph. 78 53 49 66 42 89 44 (54 (65 (75 85 (94 103 258 394 402 150 667 274 33i 388 445 501 440 378 I45-2 I44-2 144-4 I45-8 H5'4 '45'5 I45-5 145-6 145-6 "457 H5-4 145-1 + I0'2 + 10-1 + io-j8 + 10-6 + 10-5 + 10-4 + io"3 + 10-2 + lO'I + IO'O + 9"9 + 9'7 69-1 -54-4 42-6 -28-2 - 9-6 - 2-7 + 10-4) + 23-5) + 36-5) +49-6 + 627) + 757 Means 33 95 I33H7 + 10-60 ... Group 227. Single spot. Nov. 9-572 o 27 o 28 301-1 - 6-1 60-3 Means ... O 28 301-1 6-1 Means 68 386 145-28 +10-23 TAKEN AT ('.RFJCNWICH, AT HARVARD, ANI> AT MKLBOURNI, IN Till YEARS 1874 TO 1877. 73 .is ami Heliographic Positions of Groups of Sun Spots contm Date. wioli Civil Time. Projected Are* of Area IT :ip. \|. H ,-itud< ' ' roup. V. ,: Latitude of Group. Ixngitnd lr"Mi Central Meridian Date. Greenwich Ciril Time. I': td Area of Ana for Group. Mean Longitude ' . roup. Mean Utitode of Group. Longitude from Oantnl Meridian. Umbra. Whole S|,,t. I'lnlira Whole S|.,L Umbra. Whole Spot Umbra. Win .! S|K>t. Croup 131*. Two mn*ll spot*. Group 233 continued. 3* J 8 NII pli. 28 18 >3 o 710 384 tograph *35 IOO 65 83 >7 20 ('9 li 16 17 37* 202 177 '5' 88 86 ,56 o 147-0 147-6 147-6 I47-6 I47-0 146-3 146-8 o + ir + 109 + iro + 11-1 4-11-6 + 11 6 + 11-9 - 6-0 + 8-0 + 21-6) + 35'* + 57 +657 +73'* '877.., Jan. (< o 73 o 58 *737 + 6$ O -50-2 '877.* Jan. 19-041 20-050 21 22-118 23-500 .'IS o 58 2-3-7 + 6'5 O O O ip *3it- i two spots, mostly umall. *4 536 25-064 Means 3' *4' I47-03 -f- 1 1 -07 ... Jan. 8-048 9068 10-068 11-243 30 o 15 o 92 o 113 o 18 8 47 59 *66- 7 267-1 267-1 267-7 -1- 5'8 + 6-3 + s- + 6-3 -JI'O -17-2 - 4' + 12-0 Jan. 26-533 27-024 Group 234. One amall faint spot. o 33 267-15 + 605 O 39 17 o o 28 1 1 9 -0 9 -0 - 7'3 - 7'5 -45'3 38-8 (Jroup 232. Oue regular pot, a, utiialljr with a small compnion. Means ... o 20 9'OO - 7-40 ... Group 234*. Wv small faint i|K>t, that breaks up into several fragments on February 3. Jan. 10-068 11-243 12-052 13-036 H 15-585 16 17-089 18-049 19041 20-050 21 22'1 l8 *9 38 44 *9 No pho 106 74 46 56 s No phii '5 17 i 236 *73 302 tograph. 4'5 tograpli. 37 306 3'3 *3> togrnph. 54 57 38 35 '9 (37 55 (48 4 *7 39 *9 (43 56 375 256 220 ' 9 I 206 *'5 190 166 181 "9 216 212 207 '95'4 194-2 '94'9 '94'4 '947 '94 '9 195-1 195-2 195-0 194-8 194-8 '94'4 '93 '9 + 8-8 + 8-5 + 8-6 + 8-5 + 8-8 + 9*0 + 9-2 + 9'3 + 9'5 + 9-5 + 9'6 + 9' 6 + 9'5 -757 -61-5 -50-1 -37-6 -10-6) - 3-6 + 6-5) + 16-5 + 29-0 + 41-8 + SS-* + 68-4) + 81-5 Jan. 30-534 31-078 Feb. i 2-083 3-557 4 5 6-097 7-459 o No pho 5 No pho No pho O 9 '5 tograph. *S 3* tograph. tograph. II 7 o o ( 3 o * o 9 12 '3 3 '3 10 7 6 301-7 303-1 303-6 304-0 304-0 307-6 311-2 347 3'3'4 - 7'* - 6-9 - 7-o - 7-0 - 8-3 - 8-0 - 7'8 - 7'5 60-0 -S'4 -37*8) -24-1 - 47 4- 10-0) + *47) + 39'4 + 56-1 s 4 220 '94-75 + 9'n > Means ... 1 ii 307-0$ - 7-47 Group 232*. A abort stream of spots. + 26-0 + 4*'3 Group 235. A well-defined regular pot, which gradually diminishes in size but does not other- wise change its form. Jan. 10*068 11-243 87 68 o 49 46 297-1 298*0 - 8-3 - 8-5 Feb. 7-459 8-523 9 10-073 1 1 12 '3 '4 '5 16-508 7'533 25 109 39 '94 No phonograph. 36 218 No pho tograph. NII ]'!m tiiyr .iph. No pho tnijnipli. No photograph. No pho tograph. 29 127 20 89 28 21 (22 (H (J (6 (7 28 33 "4 54 '4' 128 1*7 126 125 "4 "4 123 ,46 195-3 194-9 195-2 '95'4 '95'4 '954 954 '95'3 95'3 '95'3 95'4 + 9'9 + 9'5 + 9'* 4- 8-8 + 88 + 8-9 + 8-9 + 8-9 + 9' 4- 9-0 + 9'<> 62-0 -48-4 -38-0) Means ... 48 *97'55 - 8-40 i ironp 233. One rrgnlar spot, a, usually with one or two small companions, a preserves! its form, but decreases in size as it crosses the Sun. - Z 7'5 -3-4) + 07) + '4'8) + 28-9) -r-43'O) + 57-1 + 707 Jan. 15-585 16 i--c9 18-049 90 No p)io 8? 76 39 ogr.ph. 6,7 668 (51 53 4* 3*5 35' 377 367 "477 147-6 '47-4 47'4 + 108 + 10-7 + 10-6 + 10-4 50-8 -4'') 3' 3 -18-6 Means 26 '3' 195-30 + 9'8 PHOTO-HRLUXJRAPHIC RES ; IST 74 AREAS AND HELIOGRAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Umbra. Whole Spot. Umbra. Whole Spot. Jmbra. Whole Spot. Jmbra. Whole Spot. Group 236. A group of three or four small spots. Group 239. One small well-defined spot. I77- d Feb. 16-048 27-546 28 Mar. 1-089 2 3-027 4 5-086 4 No pho 16 No pho No pho O 57 ,46 tograph. 69 , tograph. 31 ;ograph. 7' 36 (23 10 (6 2 (I O 112 '33 88 43 30 16 28 39 298-5 298-0 298-5 299-0 299-3 299-5 298-5 297-4 + 7'8 + 7-o + 7' + 7'4 + 7' + 6-9 + 8-3 + 9' 6 o -74-0 -54-8 -44'i) -33'4 I877-.1 Apr. 6-500 7-460 3 2 25 8 28 3 63 34 132-5 1327 e -12-6 -I2'9 o -79-9 67-0 Means 6 49 132-60 -12-75 -20-4) - 7'4 + 5-0 + 17-6 Group 240. A group composed of three spots, of which the smallest gradually disappears. Means ... IO 61 298-59 + 7-68 ... Apr. 16-123 17-476 18 19-523 20-470 87 II I No pho 53 30 685 634 tograph. 2 7 8 129 47 70 (64 58 56 368 401 352 302 243 104-3 104-5 104-1 103-6 103-4 + 18-9 + 37-0 +50-1) +63-2 +75-5 Group 236*. A short stream of spots. -I5-0 -I5-0 -147 -14-4 -I3-9 Means ... 59 333 103-98 14-60 Mar. i '089 2 3-027 5-086 28 No pho 22 No pho 18 122 tugraph. 285 togriiph. 265 15 ('3 (' 10 65 104 '43 148 152 311-5 311-0 310-5 309-9 309-2 8-2 2O'O - 8-5 - 8-7 - 8-6 - 8-5 LV \j - 87) + 3-6 + 16-5) + 29-4 Group 241. A group of small spots, which change greatly on April 23. Means ... 12 122 310-42 8-50 Apr. 20-470 21 22 23-408 24-423 25-417 26 27-560 6 No pho No pho 53 44 36 No pho o 58 4 tograph. (iz tograph. (20 271 27 133 23 121 20 tograph. (10 26 o 4' 73 105 137 69 68 46 23 343-6 3447 345-8 347-o 3477 348-I 348-5 348-9 + 0-4 + 0-9 + ''4 + i'9 + 2-3 + '4 + 3- + 3-6 Group 237. Faint ill-defined spot, which breaks up into several spots on March 10. -30-2) -16-1) 2'I + I2'O + 25-5 + 40-1) + 547 Mar. 8-609 9-069 10-559 60 58 34 O O 36 37 40 *65'3 265-8 273-6 10-8 u-i - 9-8 + 32-0 + 38-5 +65'9 Means ... 15 7 346-79 + 1-99 Means ... ... o 38 268-23 -10-57 Group 242. A group consisting principally of two small spots, of which one disappears on April 27. Group 238. A scattered group of ill-defined spots, which gradually condenses into two well- defined spots. On March 22, one of the spots has gone off the limb, and the other is only partly visible. Apr. 23-408 24-423 25"4"7 26 27-560 28-062 29 30-554 May 1-107 29 '9 3' No phc 25 No plu 10 o 101 69 92 tograpn. 108 60 tograph. 30 18 21 I I 16 ('5 13 (6 1 1 o 73 4' 48 5* 56 33 33 33 28 303-1 303-5 305-3 308-0 310-6 310-8 3H'4 318-0 318-6 - 7-6 - 7'5 - 8-1 - 7'4 - 6-6 - 6-7 - 6-8 - 6-8 - 7'5 46-0 -32-2 -17-3 - 0-5) + 16-4 + 23-2 + 43'3) + 63-3 +7I-J Mar. 17-481 18-399 19-562 20 21-169 22-465 IO 83 59 No ph< *5 18 76 357 397 > tograph 236 61 46 39 (S 2 25 5o 39 '97 261 249 238 "73 128-0 129-2 129-6 129-2 128-8 131-8 i i-i I 1-2 II*] I I '2 n-2 -i 1-6 + 1 1 -6 + 2 4'9 + 40-6 + 50-8) +61-0 + 81-1 Means 33 '93 ' 2 9'+3 -11-23 Means ... 10 44 310-26 - 7-22 " TAKEN AT (JRKKSWICH. AT HARVARD. AN!' AT MELBOURNE, IN THE Yt-*.U;> 1*74 TO 1877. 75 is ami Holio^ra]ihir Positions of Groups of Sun Spots eontimud. Dale. Greenwich Ciril Time. Pro) An Umbra. acted Are a ol i . r Whole , tea. i for nip. Wh.Jf Mian M< Hi Longitude latitude roup. of Grou]>. Longitude from Central Meridian. Date, Greenwich Cifil Tim*. Projected Area of Are* for Group. Mean Longitude of Group. Mean Latitude of Group. Longitn U Ir-'ii. Central Meridian. Umbra. Whole Bperk, Umbra. Wh.,1* Spot j o o 6 21 i .roup 243. L xcattereit group of small faint spots. Group 147. On* small spot. A second appear* on May 4, and a thirl on May 16. 1877. Apr. 30-554 M,i\ 1-107 1-075 3-428 4-516 28 60 101 79 53 4 '3 *5 47 68 48 3* 107-8 208*0 207-5 208-6 208-1 O + 18-6 + 18-8 + *9'* + 30-1 + *9'9 o -46-9 -393 -27-0 - 8-1 + 5-8 1877.4 May 17-051 18-418 '9 20 21 22 *3 14-470 15-460 26-441 o 9 No pho No pho No pho No pho No pho 33 45 8 11 101 tograph. tograph. t.'1'I.II'll. iii^ra)>li. tograph. '57 '43 74 O 16 (5 (H (S [i (10 '9 9 7 *5 9* 9* 9' 90 90 89 89 93 61 320-4 313-1 3*3-5 3*37 324-0 324-1 34'4 3*47 3*37 324-2 o + 9-8 + IQ-O + 9'8 + 9' 6 + 9'4 + 9-> + 8-9 + 87 + 9'' + 87 -76-1 -$$* -41-6) -28-0) -14-5) - 0-9) + 1*7) +16-3 +38-4 + 5''9 Me. ins ... 3 +4 108*00 + 29-32 (iroup 244. A WAttereil group of iniall faint spots, condensing on May 5 into a single spot. Means ... ... 9 ll 313-60 + 9'3 1 Group 148. Two small spots. M.iy 4-516 S'447 6 7'4'4 8-41 1 *3 >7 No phu 4 95 54 taf-ftafh, 12 '4 12 10 (7 4 49 3' 21 1 1 2O 117-1 1I9-3 22O-O 22O-7 221-1 - 2-6 - ''9 - 1-8 - '7 - ''9 + '4'9 + *9'3 + 4Vo) + 567 -t-7-3 Mrans 7 26 219-66 - 1-98 ... May 16-441 *3 S '5 53 310-1 - 9'3 + 37- Means '5 53 310-1 - 9'3 ... (Jroup 245. A single well-defined spot. Group 149. Two spot*, on* of them very small. May 7'4<4 8-4.1 9'455 10-469 11-591 35 5! 9 '5' 1 86 100 125 118 35 3' '7 '9 '4 '5' '39 61 68 61 I03-8 1037 I03-6 103-5 I03-6 -14-2 -14-2 14-1 60-2 -47'i 33-4 -14-0 -14-0 -20'1 - 5'' June 3-499 4-43* 5-44 6-464 7-4I3 8-506 9-419 10 1 1 -469 11 5' 70 62 70 7" 90 No pho 43 36 3*8 334 267 281 37 44 tograph. *39 n 37 4* S 37 49 (4' 33 37 138 200 '43 '44 '59 221 203 84 108-1 107-8 108-0 109-0 108-6 108-5 108-4 108-4 108-3 -10-5 -10-3 1O'2 10-3 -10-3 -10-4 -10-3 -10-5 10-7 -57-$ -45'5 -32-0 -7'4 - 5'3 + 9'' +11 + 34-6) + 48'' Me;u>s ... *3 96 103-64 14-10 < Iroup 246. One small well-defined sj>ot. A second appears again. Another distant companion is teen on >n May 10, but soon disappear* May 17. Means ... 35 170 108-36 -10-39 May 9-455 10-469 11-591 12 >3 14 >5'549 16-093 17-051 18418 '3 44 47 No pbo No pho Xn i'h" 39 i- 1 1 4 158 *49 tograph. tograph. tograph. '79 '4* "7 10 1 1 3 26 (*s (*4 (J *3 n 9 o 35 1: '39 131 122 "4 I0 5 90 93 '4 82 9 82-6 85-3 85-5 857 85-9 86-0 85-8 86-4 86-4 + 8-2 + 8-4 + 8-3 + 8-5 + 8-6 + 8-7 + 8-8 + 8-6 + I0'2 + 8-6 54'' -41-0 -S'4 -10-4) + *'6) + '57) + 19-6 + 36-6 1 -roup 250. Two small spot*. + 49'9 + 68-0 June 25-428 46 '34 4 70 127-4 -11-8 - 8-0 Means ... 18 95 85-25 + 8-69 ... Mi-una ... *4 70 217-4 -12-8 ... 76 AREAS AND HELIOGKAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED KROM PHOTOGRAPHS N Areas and Heliographic Positions of Groups of Sun Spots continued. Date. Greenwich Civil Time. Projected Area of Area for Group. Longitude Mean Mean , Longitude Latitude Central of Group, of Group. Meridian. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Group 251. A rery close pair of well-defined small spots. Group 255. A large spot, divided into three portions by bridges. On August 28 it has separated into two small spots, one of which disappears on August 29. i8?7-d June 28-490 29'459 16 43 49 129 10 32 3 97 227-8 12-0 228-1 I2'7 o + 32-9 +46-5 l877. d Aug. 22-506 23'534 24-440 2 5 26 *7 28-478 29-570 3 3 1 -406 8 22 32 No pho No pho No pho 30 22 No pho 7 32 104 246 togrnph. tograph. tograph. 82 59 tograph. 3' 2 7 32 3 (26 (22 (18 '5 1 I (8 4 116 '49 230 183 '35 88 4 3 2 5 '9 104-5 103-3 103-2 103-4 'OS'S 103-7 103-8 I0 4'3 104-5 1047 o + 7'9 + 8-6 + 8-8 + 8-8 + 87 + 87 + 87 + 8-4 + 8-2 + 7'9 o -82-7 -70-3 -58-4 Means ... ... 21 64 227-95 -12-35 Group 252. One very small spot, which breaks up into two or three on July < 44 9/1 -31-4) -18-0) - 4'5 + 10-4 + 22-8) + 35-' Means '9 102 103-89 + 8-47 ... July 3-442 4'44 5 '47 16 5 2 48 57 49 IO 3 i 3i 3> *5 91-1 -fio'6 93'3 + 9' 8 94-2 + 9-6 -38-2 -22-7 - 9-1 Group 256. Two spots ; tlie following spot, which is small and faint, disappears on September 9 ; and the larger spot has greatly increased in size by September 5. Means ... 5 29 92-87 + 10-00 Group 252*. Several small spots in a semicircle. Sept. 4-503 5'474 6-436 7'39 2 8 9-520 10 ii 12-405 '9 S 2 75 77 No pho 72 No pho No pho 4 2 87 246 315 428 tograph. 316 tograph. tograph 170 25 46 5' 45 (40 36 (33 (29 26 I'7 216 213 249 204 .58 140 123 106 306-3 306-5 307-2 306-4 307-3' 308-2 308-4 308-6 308-7 + 9'5 + 9'4 + 9' 2 + 9'' + 8-8 + 8-6 + 8-6 + 8-6 + 8-6 69-2 July 14-063 IO 49 5 26 358-4 -II-2 + 97 -56-2 42-8 3 9 16-0) I'O + >3' 2 ) + 2 5'4) + 37'5 Means 5 26 358-4 -II-2 Group 253. One very small spot. Means ... 37 170 307-51 + 8-93 Group 257. One small spot. July 18-468 IO 26 6 16 3I9-6 -13-4 + 29-1 Means ... ... 6 16 3I9-6 -13-4 Group 254. Two very small spots, one of which disappears on August 3. Sept. 12-405 '3 '4 5 16 '7 18-524 23 No pho No pho No pho No pho No pho 2 92 tograph. tograph. tograph. tograph. tograph. 2 4 '9 (16 ('3 (10 (7 (4 i 75 65 55 45 35 2 5 15 222-5 222-4 222-3 222-2 222 -O 221 '9 221-8 li -4 -i 1-4 -11-3 -H-3 I I '2 II-2 in -48-7 -35-3) 22-0) - 8-6) + 47) + 18-1) + 31-4 Aug. 2-523 3'53 30 o 74 '9 24 o 47 20 129-2 +12-4 I30-9 +I2-I + 37'9 + 5^5 Means 10 34 130-05 ' +12-25 Means 10 45 222"l6 -11-27 TAKEN AT GKKKNWICH, AT IlAKVAKH. AND AT MKLBOUKNK, IN THE YEARS 1874 TO 1877. 77 Date. Greenwich Civil Time. Projected Area of Areas ami Ilolin^raphic ' i (Jn>u]w <>f Sun Spots continued Area for Group. MB Longitude of Group. M.-.u, Latitude of Group. Longitude from Central Meridian. Kit. Greenwich Civil Time. Projected Area of Area for Group. M u Longitude of Group. M. Latitude of Group. Longitude from Central Meridian. Umbra. Whole Spot Umbra. Whole S| >t . Umbra. Whole Spot. Umbra, Whole Spot. Group 258. Two small faint spots. Group 261 -continued. 1 VJ-- No pho 238 225 '99 202 '4' 107 No pho 37 1095 1271 1509 '47' 7*60 544 tograph. 246 ("4 '39 '24 116 104 I2O 101 1OO (95 89 603 605 662 778 77 562 543 508 544 579 o 335-2 334-8 334' 6 334'S 334-7 3347 334-6 334-3 334-0 - 8-0 - 8-0 - 8-0 - 8-1 9 -35-9) -21-6 - rs + 3-5 + 12-8 + 30-3 + 44'' + S6-4 + 66-8) + 77'* '877-d - |>t. 18-524 '9 20-087 2 I -463 o No pho o X 21 tograph. *4 22 (o o I 12 12 12 12 o 167-2 167-4 167-5 167-8 o - 4-4 - 4-4 - 4-3 - 5'3 O -22-9 -12-6) 2'2 -f 16-3 ' 8 77-d Oct. 29 3'5'3 31-448 Nov. 1-445 2-131 3-482 4'49 ' J44. 7-073 Moans ... ... o 12 167-48 4-60 7 - 8-2 - 8-2 - 8-3 - 8-3 - 8-4 Group 258*. A very small spot. Means 100 611 334-87 - 8-12 1 Sept. 25-111 8 o 5 '35-9 - 2-7 + 32-3 Group 262. A somewhat scattered group of small njwtx. 1 Means ... 5 '35'9 - 2-7 Group 259. One small ipot Sept 25-1 11 26-588 27-506 28-411 1 2 952i 18 10 9 5 35 75 4' 12 20 8 6 3 '33 85 33 35 9 22'I 2I- 5 22-1 21-8 zi-7 - 7-' - 7-6 _ 7-0 - 67 -81-5 -62- 5 -49-8 -38-1 -23-5 Oct. 30-513 Nov. 1-445 2-131 3-482 4-49 ' 5-442 28 43 47 8 35 ii o 170 211 263 82 39 20 25 18 6 o I2O 124 '39 76 76 45 24 312-4 313-0 3 '3-3 314-6 312-8 313-0 313-6 - '5 '2 - '5 ^_ i -44-0 -31 i -'77 - 7'3 + 8-7 + J2-4 -t-35'4 V u ... 7 59 21-84 7"'2 Group 260. One rery small spot. * Means ... '4 86 3-3-24 - 2-49 Group 263. Two small spots, the second of which moves more quickly than the firt, and grows gradually smaller. Oct. 1-415 5 '4 3 8 28-0 -19-4 + 7-8 1 Means * * ... 3 8 28-0 -19-4 ... Group 261. A large well-defined spot, surrounded by several small fragment*. Nov. 14-494 15 16-548 17-586 62 No pho 3' 29 i So tograpb. "3 52 38 (27 16 5 in 85 58 27 125-2 1257 126-2 126-9 - 97 - 9'7 - 9'7 -10-3 -33-7 -'97) - 57 + 87 Oct. 26-072 27 28 '5 No pho No pho 2'5 togriph. ".vijii.. (89 595 336-2 597 335-8 600 335-5 - 8-1 8-1 - 8-1 -78-8 - 6 4'5) Means ... 24 70 126-00 - 9' 8 5 ... 78 AREAS AND HKLIOGRAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS. Areas and Heliographic Positions of Groups of Sun Spots continued. Projected Area for Longitude Date. Area of Group. Mean from n - *_i_ LonpitiiH Latitude Projected Area for Longitude Date. Area of Group. Mean Mean T J T i-i J fr m Greenwich Longitude Latitude Civil Time. Umbra Whole ^ Whole IN M.\ri;ITIUS IN TIIK YKARS 1878 TO 1881. 81 is and Heliographi. Positions of Groups of Sun Spots continued. Data. ^ ich Civil Time. Where taken. Projected Area of Ale* for Group. Mean Longi- tudo of Group. Mean Lati- tilde of Group. Longi- tude from Central Meridian Date. Greenwich i nil Time. Where taken. Projected Area of Area for Group Mean Longi- Mb >.t Grnnp. Mean Lati- tude of Group. Longi- from Ctntl.l Meridian. Umbra. Whole S|K)t. Umbra. Wliol.- S|K>t. Umbra. Whole Spot. Umbra. Whole Spot Group 269. A nuintwr of spots in a straight atrram. The leader, a, is a regular well-delined spot ; two or three small spot*, 6, follow ; and, r. i the rear spot of the strram. Group 273. A small faint spot, almost entirely hidden by faculn on Hay 31. 1878., May 31-420 June i -088 2-280 G Me I I O O 3 5 II '3 ll '4 2 3 '3 12 12 8 o 3-5 4-0 5 1 ' 5-> o -1- 4'4 + 4-9 + 4'6 -f 4'8 -65-4 56-1 Bi? 8 - .< Mar. 4-511 ;-445 6-1:9 G G I 58 28 *35 " 32 3> '5 121 61 18 o 148-5 '48-3 151-1 o + 4-0 + +' + 3-6 1-2 + 10-8 + "5 39 o SSSSsT" >5 67 149-30 4- 3-90 3-285 -25-8 ,. i II 4'43 + 4-68 ... Group 270. One small spot. Group 174. Two small spots. 4-5-1 ( '< 5-445 G 6-129 ' 4 3 22 8 18 4 2 21 6 n 92-8 93-1 93-5 + 0-5 4- 0-7 + 0-8 -56-9 -44-4 -35-1 June 10*451 G o '9 '4 343-8 - 67 +477 2 '3 93''3 + 0-67 Means ... Means '4 343-8 - 67 ... Group 271. A lung straight spot, n, from which a considerable portion, c, has hroken off by Man-h 14. a is followed by 6, a cluster of two or three small spoU. Group 175. Two regular spots, a and b. They both increase in size, *nd 6 divides into two parU, b and c, on July 18. Mar. 11-306 12-491 13-303 14-489 15-286 6 '57 '7 18-234 1 G I G I 1 1 3 69 +3 5' 9' 5 No |>ho 20 28 2 3<8 . 37 369 22 2 5 i 27 5'4 5' 347 3' tograph. (24 106 1 6 ll 1 68 192 '33 287 214 150 86 Z 4'3 27-1 28-0 29-5 28-8 28-3 30-0 31-6 + 5'9 + 7-* + 7-' + 7-3 + 7-8 + 7'9 + 7'9 + 7'8 36-0 -17-6 - 6-0 + II-2 + 2I-O + 32' + 47-4) + 62-7 June 26-516 27-501 28-502 29-508 G G G G '7 4' 39 3 80 188 '94 38 12 36 54 8 i 6 i6 7 *77 94 126-1 125-6 126-9 122 6 + 13-8 +4*-6 + 13-6 +55-2 + 13-6 +69-7 + 13-3 +78-8 Means 28 '49 I25-30 + I3-58 26 156 28-45 + 7-36 ... Group 276. One small spot sssssssr Group 271*. A small spot. July 26-406 G 5 18 3 ii 83-2 + '5'3 + 35-3 JApr. 5-181 1 18 13 46-0 + 0-6 -46-2 Means 3 1 1 S3'* + '5'3 ... N:.-.H )S '3 46-0 + 0-6 ... Group 272. A small irtfuUr spot, a, followed by a much larger s.iot, b. a has disanpe, Junr 4. ned by ( Iroup 277. One regular spot. Sept. 2-552 3-532 4'45 5-185 6-543 7-393 8-281 9-560 10-561 11-499 12-399 13-500 G G G Ma G G I G G G G G ii *7 38 37 7' 64 70 5* 55 44 36 ll 64 119 2OI *33 259 8 7 354 265 249 210 '44 64 H 3 3' 25 39 33 35 *7 32 3' 3* 28 141 '34 165 '54 142 48 178 '39 '45 '45 126 too 186-3 186-8 187-2 [I87-2 187-2 187-6 I88-I I88-I 188-6 189-0 189-2 190-0 + 37 + 3-6 + 4'2 + 4"' + 3'9 + 4'' 4- 3'8 + 3'4 4- 4-0 f 4- f 4'2 f 4"' -77'4 64-0 -52-1 -41-8) -23-8 I2'2 o-o + l6- 9 + 30-6 + 43'4 + 55-5 + 70-9 (27 - 28-1:8 29-137 30*1 16 31-420 1-088 2-280 |-8 5 4'436 5-089 65 5 G I I I G Me 1 I G Me G 69 54 IOO 83 120 I0 5 39 4 12 O O 288 442 636 49 2 54' 476 320 '43 67 10 12 66 45 63 +6 61 54 21 *5 9 o 281 35" 402 272 277 242 '73 87 5* 9 *7 6r6 62-2 62-7 63-2 63-1 6 3 ' 5 64-2 64-8 64-7 64-9 65-9 + 7'9 + 8-2 + 8-1 + 7'9 + 9-0 1- 8-8 + 8-9 ; + 9-0 4- 8-6 + 77 + 9T -58-6 50-2 -36-3 -22-9 - 5'8 + 3'4 + 19-9 H-33'9 + 49' + 57-8 + 77-6 Means 35 I9 8 63-67 + 8 '53 leans 3' '43 1X7-94 - f 3'93 PHOTO-UKLIOOBAPHIC RESULTS, 1878-1881. 82 AREAS AND HKLIOGRAPHIC POSITIONS OF GROUPS OF SON SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. Projected Area for Longi- Area of Group. Mean Mean Q-JJSJw, Where Lo ^i- Lati- fmm Projected Area for LonL'i Date Area of Group. Mean Mean ^J taken tude of tude of r r , ClVllTlme - Whole r Whole Group. Group. g* Umbra - Spot. Umbra - Spot. Civil Tinif taken - tude of tude of , Whole , Whole Group. Group, Meridian >ra " Spot. 3ra " Spot. Group 278. One regular spot. Group 27 8 A. A small regular spot. 1878. d Oct. 29-305 I 8 66 13 103 163-1 +10-3 71-7 30-182 I 13 94 13 91 163-4 +10-6 -599 31-204 I 24 146 17 105 163-9 + I0 '6 45'9 Nov. 1-495 G 33 158 19 91 163-4 +10-6 29-4 2-283 I * 6 '49 '4 79 l( "3'3 + 10-6 19-1 3-304 I 26 140 13 71 163-0 +10-4 5-9 4-214 I 18 128 9 65 163-2 + 9-9 + 6-3 5-547 G 31 130 17 71 162-8 + IQ-I +23-5 6-319 I 21 109 13 66 163-0 +10-3 +33'8 7-508 G 26 91 20 71 163-6 +10-5 +50-1 8-300 I 16 69 16 69 163-3 +IQ-6 +60-2 9-182 I 7 23 n 37 163-3 +10-4 +72-0 1878. ,1 Nov. 20-290 I 3 20 8 50 226-1 4- 4'2 78-9 21-328 I 2 l6 2 19 226-5 + 3'9 64-8 22-214 I o 23 o 19 226-7 + 4'3 5 2 '9 Means ..... 3 29 226-43 + 4-14 Group 278B. A small regular spot. Dec. 19-439 I 5 28 7 36 348-1 - 1-7 +67-3 20-168 I 4 ii 9 26 348-4 1-4 +77' 1 Means 15 77 163-28 +10-41 Means 8 31 348-25 1-55 TAKES AT (jrKKK.NWICII. IN IsiHA, AT MlCLBOUKNK, AND IN .Mu'l;IlIUS, IN TI1K YKAKS 1878 TO 1881. 83 Areas and Heliographic Positions of Groups of Sun Spots continued. Date. Wh.tr taken. 1'roj Arc Umbra. retell of Area for i[>. M. M Luugi- tnde of Group. Mean Lati- tude of Group. Longi- tMl I'inin Meridian. Date. Greenwich Civil Time. Where taken. Projected Area of An- a for Group. Mean Longi- tude of Group. Mean Lati- tu:. ..I Group. Longi- tude bgaj Central M-ridian. W holt- Spot. Umbra. Wh..le >p..t Umbra. Whole Spot. Umbra. Whole Spot. Group 2780. IA few v. TV Miiall ipoU in * comjiarl cluster on January 30. A single small sjiot on January 31. Group 282 continued. 1879- .1 July i' 122 2-438 3-087 4'49 6 Me G Me G G 6l 4' 39 i7 4 454 '94 216 75 34 36 18 3' 20 8 268 '33 165 9 74 o 256-4 260-4 *59'3 261-0 261-0 -26-7 -26-5 -268 -263 A.r aj + n-5 + 31-9 + 4'3 + 60-7 + 73'* '879- a Jan. 30-304 31-290 I 1 6 43 8 4 o *9 7 o 129-9 130-5 -*37 -23-9 O +40-3 + 53-9 2 18 130-20 -23-8 ... 5 439 20 5 3 46 258-43 -26-44 Croup 279. A stream of spots. The leader, a, is a large regular spot, followed by small spots, 6, c, and rl. * ami d hare disappeared by April 17, t by April 19. Group 283. A small faint regular spot Apr. 15-594 16-087 7-595 18-453 19-540 20-062 21-128 22-058 23-098 G Me G G Q Me Me Me Me 64 58 64 62 46 36 *9 *9 3* 4'3 276 3'5 '5 204 76 166 104 36 3* 33 33 '7 *3 *3 3" 182 "7 H4 169 128 130 140 178 207 '53-4 152-0 153-0 '53'4 >S4'5 '54'3 '54'3 154-2 54'3 21-1 20-8 20-8 20-6 -20-4 -23-8 -18-6 + *'* + 14-0 + 2 9'4 + 36-1 + 50-1 + 62-3 + 76-2 July 1-122 2-438 3-087 4'49 6 5-439 Me G Me G G 10 3 10 30 o 19 * '7 o 3 8 : 20 I7O-O 10 1697 25 169-9 12 169-5 10 169-5 + 28-1 + 77 -M7-9 + *7'4 + *7'* -74'9 -57- -49-1 -30-8 -18-3 20-7 -20-7 21-0 Means 2 15 16972 + 27-66 ... Group 28 3A. A large regular spot 1 M.' in- 26 167 153-71 -20-71 ll ' Group 280. A very small spot, surrounded by farulae. July 11-489 12-420 >3 '4'4'7 15-122 16423 Ma Ma Ma Me Ma 3' 45' No pho *4 4 8 178 410 tograph. 7 222 97 16 2* ('7 >3 '1 95 206 63 121 12 9 7* (90-5 (90-5 90-5 (9'5 90-5 (9'5 + 5-5 + 5'5 + 5'5 + 5'5 + 5'5 + 5'5 -17-2) - S') + 8-3) + !$) + 308 + 48-0) || Apr. 18453 G o 8 o 9 77-1 l6'4 62-4 1 Means o 9 77'' -26- 4 ... 16 '3' 90-5 + 5'5 ... Group 18 1. A small regular spot, a, with a very small faint companion, 6, on May 10. Group 284. A small regular ipot May 9-083 10-425 12-504 Me G ots in an irregular group on August 11. Aug. 1 1-420 12-507 13-430 Ma G G 8 62 5 79 163 '3* 6 4 5* 55 127 38 (94'" 94'' 9+'* + 9-8 + 9' 8 + 10-2 + 35'4) + 49-8 + 62 2 lune 27-404 28-526 2 9 30-483 G G G 1! No pho 56 '4* 232 t - )! , 309 4 4' (37 33 105 '43 161 '79 255-1 57'4 257-6 *S77 -26-3 -25-9 -39-1 -21 9 - 8-8) + 4'3 zo 3 -26-7 Me&ns 35 107 94 - '3 + 9'93 ... 84 AREAS AND HELIOGRAPHIC POSITIONS OF GROUPS OK SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographie Positions of Groups of Sun Spots continued. Date. Greenwich Civil Time. Where taken. Projected Area of Area for Group. Mean Longi- tude of Group. Mean Lati- tude of Group. Longi- tude from Central Meridian. Date. Greenwich Civil Time. Where taken. Projected Area of Area for Group. Mean Longi- tude of Group. Mean Lati- tude of Group. Longi- tude from Central Meridian Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Group 285 A. A regular spot. Group 289 continued. 1879.,, Oct. 10-597 11-549 12 '3 H'443 G Ma Ma 63 o No pho No pho 2 188 43 161 o togriph. (o tograph. ( I 24 I 124 92 65 39 12 o 304-0 (304-0 304-0 304-0 (304-0 o + 18-3 + 18-3 + 18-3 + 18-3 + 18-3 40-0 -27-5) i j.-g\ '879-.1 Aug. 28-092 Me 49 52 260-9 + 14-1 o +62-6 Means 52 260-9 + 14-1 '4 l - 2-,) + 10-6) Group 286. A regular spot, a, followed by some small spots, b and e, in a short stream. Means 10 7 305-41 + 17-95 Group 290. Three small spots. The leader, a, and the last spot, c, are botli regular s]iots. Aug. 28-092 29 30-501 31-208 Sept. 1-512 2-512 3-464 4-407 5-218 6 7-190 Me G Ma G G G G Ma Ma 53 No pho 61 24 74 54 5' 5 24 No pho 18 224 tograph. 308 224 3'3 277 289 245 "5 tograph. 96 47 (4i 35 13 4 3 3i 34 '9 (24 28 198 189 173 I2 4 169 155 '74 168 90 119 148 144-0 143-6 143-2 (H3 g 142-8 142-4 141-6 141-5 (H''5 141-5 ('4'-5 + 29"4 + 28-6 + 27-8 + *8-i + 28-4 + 28-4 + 28-4 + 28-6 + 28-6 + 28-6 + 28-6 -54-3 -38-8) -23-3 -If*) + 2-9 + 15-7 +27-5 + 39-8 +50-5) +63-5) + 76-5) Oct. 14-443 I5-552 Ma G 6 '4 77 66 6 I I 79 5 (232-8 232-8 +25-3 +25-3 -60-6) -457 Means 9 65 232-8 +25-3 ... Group 291. Two very small spots on October 16, which have coalesced to form a large spot, a, l>y October 18. This spot is the leader of a fine stream, of which b, a large regular spot, is the last member. The smaller spots in the centre of the group are lettered c. Means 3i '55 142-42 + 28-50 Group 287. A regular spot. Oct. 16-522 17-189 18-512 19-206 2o - 433 21-483 G Ma G Ma G G o o ,63 70 126 48 34 34 666 609 5'9 266 o o 102 47 114 7i 19 20 412 410 464 377 261-1 (261-8 262-5 (262-8 263-0 265-3 22-0 -22-4 -22-8 -22-8 -22-8 -23-2 - 4-8 + 4-6) + 22-9 + 32-3) + 487 + 64-8 Sept. 24-438 25-576 26-555 27-504 G G G G 17 17 29 13 73 54 66 38 23 15 20 8 96 48 47 Z 4 128-9 128-6 128-4 127-6 + 29-3 + 29-5 + 297 + 297 -68-3 -53-6 4-O'Q -29-2 56 284 262-75 22-67 ... 17 54 128-38 + 29-55 Group 292. A few small spots. Group 288. A short stream. The leader, a, is a small spot crossed by a very narrow bridge, on October z, and separated into a pair of small spots by October 3. The following part of the group consists of a cluster, b, of three or four very small spots. Nov. 7-533 8-182 9-206 10-205 11-205 G Ma Ma Ma Ma 32 1 1 o o T l l 69 6 54 19 o 78 o 53 42 36 '5 86 345'2 (345- 2 (345-2 (345-2 (345-2 + 3 I-7 + 317 + 3'"7 + 3I-7 + 317 + 9-6 + 18-2) + 317) + 44-8) + 58-0) Oct. 2-581 3-406 G G 28 28 85 103 18 21 56 77 1 1 6-6 117-3 -23-4 + 26-8 +38-4 22 9 2O 67 116-95 -23-15 Means 5 46 345-2 + 3 I- 7 Group 289. A stream of spots, inclined at a considerable angle to the equator. Group 293. A very small spot. Oct. 7-481 8-116 9 G Me 6 No pho 34 5i tograph. '4 o (22 72 64 94 307-5 309-2 306-6 + I7-0 + I7-3 + I7-8 -77-6 67-6 -53-8) Nov. 7-533 G o 12 o 7 307-4 + 17-7 -28-2 o 7 37'4 + 177 TAKKN AT GREENWICH, IN INDIA, AT MELBOURNK, ANli IN MAUKITIUS, IN THE YKAR8 1878 TO 1881. 85 Areas and Heliographic Positions of Groups of Sun Spota eontiiuud. l>te. wich Where ' torn. Projected Area of Area for Group. HMI Ix>iiRi- tude of Oroup. Mrll Lati- tude ..I (il.lllp. Longi- Mi frni Central Meridian. I lat.'. Oreenvi< h Civil Time. Where taken. Projected Ana of Area for <;rup. Mean Longi- tude of Group. Mean Un tude of Oroup. Lonxi- tu.l. f. in Central Meridian Umbra. Whole Spot. Umbra. Whole S|Klt. Umbra. Whole Spot. Umbra. Whole > | " ! A few small Group 294. faint spota in two clusters, a am) b. (Jroup 297. One imall spot. 9-d NOT. 8-182 G Ma 1 1 O to 7 37 '9 o 282-7 (281-7 O +26-4 +26-4 -5*'9 1 1 -i\ '879-.. Nov. 28-547 G o 10 o 10 O MI'S o + 30-3 + 5*'9 44 3) o 10 111-5 -r-30'3 ... Means ... ... ... 3 28 282-7 -1-2 6- 4 ... Group 298. Two small spoti close together, which bar* coalesced by December i. Group 195. A fine stream of spot*, coniiiting rhielly at first of three regular apoU, a, b, and c. Nov. 28-547 29-174 30 Dec. i-22t *'55S 3-537 4>67 G Ma Ma G G G 4 No pho 16 37 '9 4 *5 78 tograph. ll 163 IO2 20 5 (5 9 20 10 1 3 1 60 49 88 55 12 3557 (3567 3577 (358-6 359' 6 0-3 0-5 20-8 -20-7 2O'6 -10-5 -20-4 -20-4 -20-8 62-9 -53-6) -39'*) -24-8) - 62 + 7'5 + '9'9 Nov. 7-533 8-182 9 106 10-205 1 1-205 12-571 13-488 '4'475 15-503 16-208 17-163 .8-454 G Ma Ma Ma III G G G Q Ma Ma |>ot Means Group 300. Three small spot* close together. Dec. 16-516 17-389 18-259 19-407 20-171 21-191 G I I 1 I u 47 50 60 36 48 33 *4* 258 170 *94 297 9 3i *9 32 '9 26 27 161 '5* '45 '55 160 131-8 133-1 32-8 >3*'3 132-6 '33-3 -18-9 -19-5 -19-9 -19-5 -19-5 -19-4 50-0 -37'* -26-1 -115 ri + 13-0 Nov. 25-554 26 27 *8'547 *9''74 G Q Ma , ., No pho tograph. No pho tograph. '7 39 o 26 5 (7 (9 1 1 o 23 2 4 H s '5 27-1 25-6 24-0 22-5 22-5 12-2 -12-6 -I2- 9 ~'3'3 -13-3 -70-9 -59' 2 ) -47-6) -36-1 -27-8 6 21 H'34 -12-86 i M f;iii^ *4 '33 132-65 -'9'45 ... 86 AREAS AND HELIOGRAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. Date. Greenwich Civil Time. Where taken. Projected Area of Area for Group. Mean Longi- tude of Group. -7 L ,uT ^ f CenTal Grou P- Meridian. Date. Greenwich Civil Time. Where taken. Projected Area of Area for Group. Meun Longi- tude of Group. Mean Lati- tude of Group. Longi- tude from Central Meridian. Umbra. Whole Spot. - IS Ie Umbra. Whole Spot. Umbra. Whole Spot. Group 301. A small spot, gradually increasing in size as it approaches the central meridian. Group 302. Two small spots with a few small faint markings near. 1880. Jan. 3-476 4-208 5-232 6-324 7-183 8 9-109 10-285 11-269 12-475 13-307 14-285 G I I I I Me I I G I I 25 27 74 59 98 No pho 125 I II 92 59 42 '9 79 116 340 39 2 635 tograph. 613 612 459 3' 254 93 33 26 55 37 56 (63 70 68 65 57 59 58 107 I 10 252 243 366 355 343 373 323 307 353 291 o 240-0 24''3 240-0 240-2 239-4 240-1 240-7 241-5 H''3 241-8 241-5 241-4 o + 20-2 + 19-8 + '9"5 + 19-6 + '9'3 + 19-3 + 19-2 + 19-0 + 19-1 + 19-0 + 19-1 + 19-6 o -65-3 -54-4 -42-1 -27-5 18-0 - 4-2) + 9' 6 + 26-0 + 387 + 55' + 657 + 78-5 1880.,, Jan. 12-475 13-307 14-285 15-207 G I I I 55 3' 102 40 126 178 506 208 37 26 119 86 86 146 592 444 228-1 228-0 227-9 228-2 -17-2 -17-2 -,6-4 -I5-5 + 4I-3 + 52-2 + 65-0 + 77> Means 67 3'7 228-05 -16-58 Group 303. Three spots. The middle one is very small and faint, aud has disappeared by January 13. The rear spot remains alone on January 15. Jan. 9-109 10-285 1 1-269 12-475 '3-307 14-285 15-207 Me I I G I I I 28 17 33 Q 10 o 74 '43 '44 116 "4 64 27 o 23 12 23 o o 78 "9 105 77 74 43 '9 1 80-8 177-9 175-9 176-3 176-3 I74-5 I-I-3 + 35-4 + 35-I + 35-2 + 35-3 + 35'' + 35'2 + 35'i -50-3 -37-6 z6-r Means 54 285 240-77 + I9-39 / Group 30 1 A. A regular spot, followed by some small companions. The leader alone remains by January 6. 20 5 -10-5 + 0-5 + 11 -6 + 20-5 9 74 176-14 + 35-20 Jan. 4-208 5-232 6-324 7-183 I I I I 6 32 21 23 45 122 9 110 9 28 '4 13 63 1 08 63 66 226-6 227-5 229-4 230-7 -18-8 18-9 -17-6 -17-4 -73 1 ' -54-6 -38-3 26-7 Group 304. Two small faint spots. Jan. 12-475 G 9 12 116-8 -187 70-0 TUT 16 75 228-55 -18-18 12 116-8 -187 Group 30 1 B. A stream of small spots, forming s of Group 301. Group 305. A large irregular composite spot, preceded by a cluster of faint spots, which disappear before the group reaches the west limb. Jan. 14-285 15-207 16-284 17-498 18 19-445 I I I G G 16 120 '95 103 No pho 1 1 '34 53' 842 478 tograph. 34 8 67 126 89 (56 24 70 297 549 412 243 74 176-6 I75-5 176-4 I75-3 I73-9 172-5 -12-7 -I3-3 -I3-3 -12-8 13-1 + 137 + 247 + 39'8 + 547 + 66-1) + 77'5 Jan. 5-232 6-324 7-183 I I I 7 n 7 44 56 85 6 4 27 3' 46 254-0 254-8 255-2 + '7'3 + '7-4 + 17-4 -28-1 -12-9 2'2 Means 5 35 254-67 + I7-37 -'3-5 62 274 175-03 Group 30 1 C. A very small spot forming s of the place of Group 3oiA. Means 13 12 Group 305(1. A small spot, n, of Group 305. Jan. 14-285 15-207 I I O o 27 26 o '4 I73-5 o 14 171-4 + 10-6 + 20-6 Jan. 10-285 1 I o '4 o 8 238-0 -23-8 + 22-5 7 - 4'9 Means 8 238-0 -23-8 -, o 14 172-45 - 4-80 TAKKS AT GRKENWICII, i\ INIHA, AT MKI.BOI-KMC. ASH is MAI i;nn s is rn YKARB 1878 TO 18H1. 87 Art-its iiinl Heliographic Positions of (Jroujis of Sim Spots contain,,!. Greenwich IV An Whtn taken. 1 rded a of Area for '!' M.,,n Ixmgi- tude of Group, M. M Lati- tude of Oroup. Longi- tude from Central K.u, Greenwich I'ivil Time. Where taken. I'n.jected Are* of Area for Oroup. Mean !,.!,.!- tude nf Group. Mean Lati- tude of IH..:.|,. Longi- tnm .,,,..! kteUtw Whole S|.,(. Umbra. Wl,,,|, pot Umbra, Whole S|...t. Umbra. Whole Spot. Group 306. Several mall faint ipoU in a straggling group. Group 309. A regular spot undergoing little or no change. l88o.,, Jan. 16-284 '7H9 S i- 9-445 ic 11-118 I G G I I 8 18 N.i p: 3<> 10 O l 61 t < L.* .' i 1 ' 100 81 26 4 10 C7 *4 10 3' 35 58 82 82 59 140-6 141-7 '437 '457 '44-7 150-0 -*4-o -24-0 -*4'3 -*47 -*5'5 -13-0 O + 4- + 2I-I + 35'9) + 507 + 59'3 + 78-3 1880.,, Jan. 30-544 31-421 Feb. 1-153 *'5'3 3-3Z3 G G I G I G G I I "i Me 2O *3 65 fi 64 65 5' 5 No pho *4 101 181 *34 * 5 A 306 262 283 267 212 togiaph. 84 43 |l *5 55 30 34 33 11 28 (*4 20 '94 '99 198 '57 172 136 '44 136 120 95 7' 48 233-1 *337 133-6 23J-3 *33'5 233-3 *33'4 *337 *337 *33-4 233-1 *33'5 o ~'5'4 -'$ -'5-5 -15-6 -'5-3 -'5-4 -'5-4 -'5'3 -75-8 -63-6 -54'' -36-5 -256 -10-3 + *7 + 13-" -I- 26-2 4-40-0) + 53-8 +63-9 Means 1 1 5 144-40 -24-25 501 5-478 6-250 7-242 8 9-382 10-116 (Iroup 3o6A. A very imll spot. -15-1 -'52 -15-2 -15-8 Means *9 '39 233-44 ... Jan. 24-284 I 7 o 5 75-4 + 17-8 + 44-' Htn" o 5 75'4 + 17-8 Group 310. A large regular spot on February 3. This spot rapidly diminishes in size, and new spots form following it, and by February 11 the group has entirely changed its appearance, being then a stream of small faint spots. Group 307. Two small faint spots. Jan. 26-451 G o 20 o 4 3Z3-7 4-17-9 -39-1 Feb. 3-323 4-501 5-478 6-250 7-242 8 9-382 10-116 11-237 12-536 13-446 I G G I I 'i Me I G G 12 58 7* 101 118 No pho 84 38 49 45 i 121 *55 33' 4*5 555 tograph. 47* 4| 361 56 75 y a 76 (63 5' H 34 36 i *57 296 283 310 357 3*i 286 '54 250 '33 79 188-0 1867 186-4 186-4 185-5 185-0 184-5 185-4 181-1 180-1 178-7 + 17-6 + *7'4 + 26-9 + *6-5 + 26-5 -(-26-9 + *7'4 + 27-6 + 28-0 4-28-3 + 18-2 -71-1 -56-9 -44'3 -34'* 22-0 - 8-4) + 5' + 15-8 + 26-2 +4*'3 + 5*'9 I Means "4 3*37 + >7'9 ... Group 308. ..t ]>recedr IN M A I HI I IUS, IN THE VKAItS 1878 TO 1881. 89 is ami IIelLi"_'r:i-.iliic 1'ositioiis of Groups of Sun Spots coiUinufil. Date. OrMDwich Civil Tim. . Wh.-re taken. Proj An Umbra. .vi...i a of Whole Area for Group. M.-.,,, I,,,,,,- M.,,M Lati- tudeof Group. Lougi- Ml from Central Mendiai Date. Greenwich Civil Time. Where taken. Projected An* of Area for Group. M...I: I-...I-, tude of (in.up. MM U* tude of Orou> Luoci- Mi from Central Meridian tnde of Uroup. Umbra. Whole Spol. Umbra. Whole Spot Group ji6A. A few |iOts, mostly small, in a stream iiu-linr.l at a ronniderable angle to the equator. Group 319. A stream of apota of whi.-h tin- principal member is a large regular spot. l88o. d I Mar. 27-217 28 29-175 30-312 3 '"303 I T I I 9 No pbo 3 3 16 33 !.vri|.!i. ' 3 < I 4 6 84 5 0* 20 *4 16 ll 5* 87 '" + 84 287-1 287-9 288-8 288-9 287-3 r 30-8 3O-O -2 9 2 28-9 -287 o + 4'9 +-I8-7) + 3*'5 +47'5 + 58-9 1880.,, Apr. 12-435 13-426 '4 - '7S 15-286 16-460 G G I 1 G "4 126 63 '9 o 47' 336 7 "5 IX 66 84 48 4 o 281 "J 2l6 '45 39 o 95-5 957 957 97-6 977 O 19-0 18-8 -19-$ -19-3 -18-8 e + *7-3 +40-6 + $0'S +67-1 + 82-6 Means ... ... ... 5 7' 288-00 -29-52 Means 44 181 9 6 '44 19-08 Group 3 1 7. A large regular spot. Some smaller apoti have formed near it by April 3, but hare disappeared by April 7. The principal spot has divided into two parti by April %. Group 320. A number of spots, mostly small, in a long straight stream. Apr. 15*284 26-306 27-572 28-300 2 9'444 30-492 May 1-430 2-293 3'53 4-224 5-310 I I G I G G G I G I I 53 '4* 170 295 '63 1 68 '45 98 3<* *7 4 388 634 994 '434 692 634 47 ' 348 *37 150 43 100 '74 '3* 198 95 94 ll 58 *7 22 5 900 74' 765 958 408 354 266 212 '73 123 5* 183-5 184-8 184-8 185-2 183-8 184-3 186-8 188-4 189-3 187-4 188-2 + 20-6 + 21-1 + 19-9 + 19-9 + 20-3 + 20-3 + 20-J + *I7 + 22'7 + 2PO + 21-8 -zfS 60-1 -43'4 -33'5 -19-7 - 5'6 + 9'5 + 21-6 + 39H +47-1 + 61-2 Mar. 30 312 3" '33 Apr. 1-510 2-225 3-4 6 3 4 5-518 6 7*447 8-527 9'*54 I I G I G G G G I 35 35 44 55 4* No pho 7> No pin! 54 21 '3 I 7 6 20 9 I 9 2 *53 228 tograpli. 302 i-'p.ip'n. 246 10 5 59 54 34 3' 35 *4 (3^ 4> (40 39 21 '7 275 205 138 1 60 129 '5' 73 176 '79 103 78 173-2 173-2 173-2 173-1 173-9 173-8 '73'7 174-0 74'3 174-6 747 + I7J + I7-0 + '7'9 + 18-3 + 18-1 + 18-5 + 19-0 + 18-9 + 18-8 + 19-0 + 18-5 -68-1 -55'* -39-2 -29-9 -12-7 + 0-8) + 14'* + *7') + 40-2 -1- CJ'fi 9 45< 186-05 + 20-89 ... T54 + 6V5 Group 321. A large spot, with one or two much smaller companions. Means 33 161 17379 + 18-30 ... Croup 317*. A very small faint spot May 2-293 3'53 4-224 5-310 6-550 7'4' 5 8-471 9-217 10-186 1 1-500 12-451 13-420 '4'433 I G I I G Q G I I G G G G 35 105 7' 93 129 "7 140 '55 181 105 97 7* 37 ja 575 700 602 839 7'3 847 5H 367 265 ll 82 "3 65 67 79 68 So 9 1 116 5 101 119 549 461 422 410 429 35 482 422 543 4*3 383 438 494 91-6 +26-0 90-3 +26-2 90-7 +25-6 90-0 +25-5 89-3 +25-6 89-0 +25-7 887 +25-6 88-2 +26-1 87-6 +26-5 88-1 +26-4 87-6 +26-4 87-8 +25-9 88-9 +25-8 -74'* -59-6 -49-6 36-0 -20-3 9-1 Apr. 1-518 G o 10 o 16 283-9 -33'5 + 7I-5 + 4-5 -r-3'9 +26-2 + 44' + 56-. + 69-0 + 83-6 M'-ans ... ... ... o 16 283-9 -33'5 Group 318. Two small spots, followed on April 3 by a very small companion. 83 447 88-99 +25-95 ... Group 321 A. A small spot, if, Group 310. Apr. 2-225 3'463 4 5-518 I G G 48 No pho 7 60 123 ;-LT <: ii *7 2 *7 ('7 6 33 70 45 20 199-6 202-3 202-4 202*6 + 17-0 + 16-8 + I7' + 17-1 - 3'4 + 5-7 + 29-4) + 43-' May 5-310 I 20 o 14 168-3 + 11-4 +4*'3 1 Means 13 4* 20173 -(-17-00 ... o 14 168-3 +"'4 L PHOTO-HUOGRAI'HIC RESULTS, 1878-1881. 90 AREAS AND HELIOGRAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. Date. Greenwich Civil Time. Where taken. Projected Area of Area for Group. Mean Longi- tude of Group. Mean Lati- tude of Group. Longi- tude from Central Meridian. Date. Greenwich Civil Time. Where taken. Projected Area of Area for Group. Mean Longi- tude of Group. Mean L 1 ol 'f Lati- tude of f , fro . m . r, Central Grou l'- Meridian. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Group 322. Two very small spots. Group 326 continued. 1880. a May 7-415 G 6 35 4 20 e 80'4 o -28-1 o -17-7 1880. rt May 29-427 .30-280 31-285 June 1-366 2-616 3-223 4-566 G I I I G I G 305 455 459 256 & 60 5 1783 2225 1924 1152 420 282 40 160 236 249 152 73 5 6 937 "55 1038 687 3i3 250 5 o 158-2 158-6 158-2 157-6 57'3 157-7 155-1 O + I3-9 + H-1 + I4-3 + 14-6 + 14-6 + 14-8 + I5-5 o - 87 + 3-o + 15-8 + 29-6 + 45-8 + 54'* + 69-4 Cleans 4 20 80-4 -28-1 Group 323. Two spots on May 10, of which only the preceding spot remains, much diminished in size, by May n. Ar i*7 574 157-68 + 14-20 May io- 1 86 11-500 12-451 I G G 4 8 4 122 '7 13 2 5 3 66 10 9 6 7 -I 70-4 70-9 + 17-6 +17-3 + 16-9 + 57 + 26-3 + 39'4 Group 327. A regular spot, with a small companion on May 31 and June i. Means 3 28 69-47 + 17-27 Group 324. A pair of small spots, of which the preceding spot has disappeared by May 14. May 30-280 31-285 June 1-366 2-616 3-223 4-566 I I I G I G 9 23 21 24 '9 o 48 85 94 5 2 60 25 16 25 16 '5 ii 82 90 72 32 35 H 84-6 83'9 83-4 84-3 84-0 83-9 + 25-0 + 24-8 + 24-1 + 24-2 + 24'3 + 23-8 -71-0 -58-5 -44-6 -27-* -19-5 - 1-8 May 13-420 H'433 G G 12 54 21 9 o 37 18 54'* 52-0 +23-0 + 24-1 + 35'4 +46-7 Means 5 28 53-10 + 23-55 ... Means '4 54 84-02 + H-37 Group 325. A pair of small spots, of which the following spot is very faint. Group 328. Several small spots in an irregular stream. May 20-482 21-535 G G 16 II 75 39 '4 8 70 28 232-1 233-1 + 23-9 + 24-1 -53'* -38-3 June 6-289 7-553 8-187 9-201 10-485 I I-2I2 I G I I G I G 17 7 ii 8 39 29 30 62 < 9 64 126 201 87 104 12 6 4 21 16 '9 44 17 34 66 1 06 48 66 20-4 20-6 2I-I l8'9 18-2 18-7 '7'S + 14-8 + I4-4 + 147 + I 5 -I + 14-6 + 14-6 + I 5 -I -42-5 -25-6 -i 6-7 - 5'3 + 10-9 + 2I'O + 36-0 Means ... ii 49 232-60 + 24-0 ... Group 32 5 A. A number of very small spots in a short stream. May 24-222 I 6 20 6 '9 290-7 + 197 + 54'8 12-433 Means 12 54 !9"34 + 1476 M eans 6 '9 290-7 + 19-7 Group 329. A small spot, with a very small companion on June n. Group 326. A fine stream of spots. The group rapidly increases in size until it passes the central meridian on May 30, and diminishes again even more quickly ater. June 8-187 9-201 10-485 I I "2 I 2 I I G I o 1 1 16 13 12 33 33 39 O '5 14 IO 42 47 28 29 316-6 316-7 316-8 315-8 -21-4 -21-4 -21-6 -21-7 -81-2 -67-6 -50-5 -41-9 May 24-222 25-498 26-454 27-602 28-507 I G G G G 8 69 201 253 324 2 9 292 730 I I II 1424 21 77 158 156 1 80 74 320 576 691 792 157-7 '57-5 158-1 157-9 158-2 + 13-8 + '37 + '3'3 + 14-1 + '37 -78-2 61-4 -48-2 3 1"L -20-9 Means IO 37 316-48 -21-53 TAKSN AT GREENWICH, IN INDIA, AT MKLBOURNK, AND IN MAI-RITICS, IN THK VKAKS IST.S T o 1881. 91 Areas and Hi'li.^rapliir IV-mimis of Groups of Sun Spots contim/.-l. Datr. Greonwirli Civil Tim.-. Where taken. Projected Area of Arra ftir Group. Mean Longi- tllilr of (Iron p. Mean Lati- tude of Group. Longi- tude from Central Meridian. Date. Greenwich Civil Time. Where taken. Projected Are* of Are* for Group. HM Longi- tude of Group. Mean Lati- tude of Group. longi- tude from Central Meridian. Umbra. Whole Sp..:. Whali lml **- Spot. Umbra. Whole Spot. Umbra. Whole Spot. Group 330. A regular spot. Group 333*. A small spot, not seen on June 19. 1880.4 June i 5-100 16-233 7-282 18501 '9'534 20-266 21-469 22-234 *3-464 1 I I t; G I G 1 G 3* 30 35 49 "5 54 35 *9 28 100 '4* "4 '49 589 165 '93 in 112 5' *% 26 3 64 *9 '9 '7 '9 161 '39 160 '52 3*9 89 1 06 64 81 o 134-1 234-2 233-S 231-9 233-0 233-S 131-8 133-0 232-8 +23-3 4-23-4 + 23-4 4-3-S + 23-5 + 13-6 4-23-4 4-23-3 4-23-6 o - 7 0-8 -57-0 -43-9 -18-3 i*-6 1880. d June 17*130 28-511 29-586 30*545 I G i; G s 8 *3 '4 18 '3 7 35 ii o 1 1 o 80-0 79-8 80-4 -16-4 26-1 -25-8 67-O -4-9 -11-4 - 4'4 4-10-8 + 11-2 4-37-3 Means 5 1 5 80-07 16-13 Group 333. A few spots, mostly unstable and small at first, in an irregular stream. The group greatly increases in size when near the west limb. Means 3* 142 233-31 4-23H4 ... Group 331. A regular ipot, with several small spots in a itraggling stream. June 18-51 1 19-586 30-545 July i 1*401 3'497 4'37' 5-438 6-131 7 8-403 9-480 I G G G G I G Me G G 9 *9 21 No pho 20 4 56 37 o No pho 50 11 93 73 57 tograph. 95 '5' 172 118 50 toqraph. "5 48 ii *9 '7 ('7 10 39 2 9 (So 99 59 "5 70 44 i! 99 "9 101 45 240 435 130 717 68-5 69-1 ' 3 69-3 68-9 69-1 70-3 70-8 68-6 66-4 61-7 -37-3 -37-6 -36-9 -36-5 -36-1 -36-8 -36-8 -36> -35-9 -36-7 -37-5 -38-6 -57-o 46-0 -32-6 -10-3) - 7'9 4- 6-1 4-17-9 4-33-3 4-4*9 4-55-8) + 68-6 4-79'' hi 5-200 16-233 17-282 18-501 >9'534 20-266 21-469 12-234 23-464 I I I G G I G I G *5 47 43 20 77 16 o 11 *5 7 150 '47 "4 IlK 93 25 26 38 28 12 43 '4 o *9 37 9 2 118 97 68 7' 5' '4 226-8 222-O 2 I 8- I 2147 112-5 113-8 2I3-O 1I2'O 109'I + 24-' 4-24-8 4-25-3 4-25-1 4-24-5 4-25-2 + 24-9 4-25-4 4-26-4 -78-1 -69-2 -59-3 -46-5 -35'' -24-1 - 9-0 4- 0-2 4-13-6 Means ... 33 '34 6873 -36-93 18 64 215-78 +25-08 ... Group 334. A regular spot followed by a few small spots. These latter hare disappeared by July x. Group 332. A very tine itream, consisting principally of two large spots with numerous com- panion*. June 19-586 30-545 July i 1-401 3-497 4-37I G 64 G 78 No pho G 4' G 25 I '5 344 322 tograph. '94 126 49 36 4 (43 39 4' 57 '94 200 T 185 206 190 131-5 131-5 132-6 132-6 133-0 132-2 -'7'5 -17-3 -17-1 -17-1 -'7-4 -'7'4 -f-iS-o 4-30-7 4-43-') 4-55H + 70-2 + 81-0 June 17-282 18-501 9'534 20-266 11-469 22-234 23-464 H'5 Z 7 15-101 26 17-130 18-511 19-586 I G <; I G I G G Me i' G G 4 89 187 255 290 292 457 426 201 No pile 264 55 150 410 646 1092 1385 1327 1916 1854 1756 t "graph. 1585 *55 i 98 r i6 3 76 172 6 5 2 54 249 '25 (188 25' 100 o 367 487 533 755 817 75 1071 1084 1076 1258 1440 456 3 100-2 198-5 198-4 100-1 201-5 201-5 loo- 1 200-5 '997 '99'5 199-2 199-8 94'7 -i 8-4 -'97 20-1 -21-3 22-2 22-9 -22-5 12-0 21-0 -11-8 -21-6 11-2 -26-3 -77-2 -61-7 -49-2 -37-8 -20-5 -10-3 4- 4-6 + 19-0 4-25-8 4-39') 4-52-2 + 71-1 + 80-2 Means 44 95 131-57 -17-32 Group 335. Two very small upots. June 19-586 G 5 35 3 20 131-0 4-23-3 4-16-5 HMDI '57 777 199-52 1178 3 20 131-0 4-23-3 AREAS AND HELIOGRAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. Date. Greenwich Civil Time. Where taken. Projected Area of Area for Group. Mean Longi- tude of Group. Mean Lati- tude of Group. Longi- tude from Central Meridian. Date. Greenwich Civil Time. Where taken. Projected Area of Area for Group. Mean Longi- tude of Group. Mean Lati- tude of Group. Longi- tude from Central Meridian Umbra. AVhole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot Group 336. A group of small spots, which suffers great change during the period of its visibility. Group 340 continued. 1880. d July 29-526 30-509 3I-430 G G G 18 9 9 53 70 36 10 5 30 37 '9 o 59-5 59-9 59-8 o +25-1 +24-9 +24-6 o -18-9 - 5'5 + 6-6 1880. July 4-371 5H38 6-131 7 8-403 9-480 10-397 11-138 I G Me G G G I 16 49 37 No pho 77 36 7 3 61 161 222 tograph. 290 15* 21 10 I I 29 21 (33 45 23 6 3 42 95 126 47 168 98 17 10 o 13-5 '4'5 .3-6 14-3 15-0 "4'5 18-4 19-1 o 19-0 19-6 -19-9 20-4 -20-8 o -377 -22-6 -I4-3 + i-5) + 17-2 + 30-9 + 47-0 + 57'5 5 4 59-20 + 25-10 2O'6 20-6 20-8 Group 341. A cluster of very small spots. Means , 21 88 15-36 ZO'21 July 26-553 27-446 28-090 29-526 G G I G 6 4 1 H 4 27 215 59 6 37 9 8 3<> 192 38 43-0 42-0 41-0 40-0 +13-1 + 12-9 + 13-8 + 13-0 -747 -63-9 -57-3 -37-4 Group 337. Two very small spots close together. '3 67 41-50 + 13-20 ... July 13-422 G 4 26 305-3 -34-0 + I3-9 Group 342. A large regular spot, followed by a somewhat straggling stream of smaller spots. Means 26 305-3 -34-0 ... Group 338. Two clusters of small spots on July 20. The group increases in size on the succeeding days, and becomes a long irregular stream, in the middle of which a large regular spot forms. Aug. 2-293 3-593 4-235 5-I94 6-094 7-149 8-234 9-582 10-407 1 1-469 12-485 13-488 I G I I Me I I G G G G G 82 187 262 291 229 33 277 207 208 9 2 76 o 661 977 1138 1422 1159 1253 1107 965 786 5'5 321 64 97 '35 172 165 120 I 5 2 144 120 138 8 9 109 O 762 727 74 806 609 630 573 566 527 466 459 279 3237 323-2 322-9 322-8 322-3 324-0 323-3 323-0 322-9 324-0 324-2 325-3 + ii-6 + 11-6 + ii-8 + 11-6 + 11-8 + I2'O + 1I'9 + II'9 + 12-0 + 12'3 + 12-5 + I4-2 -64-8 -48-1 40-0 -27-4 -15-9 - o-4 + I3-3 + 3-8 +41-6 + 56-8 + 70-4 + 84-8 July 20-587 21-507 22-219 23-573 H-583 25 26-553 27-446 G G I G G G G 58 141 162 177 124 No pho 38 '5 368 672 969 981 66 1 tograph. 241 127 31 74 85 IOI 80 (6 1 42 29 199 352 510 S63 447 357 267 229 181-7 181-9 181-4 180-8 182-8 181-8 180-7 1 80-6 + 20-6 + 217 + 21-4 + 22-6 + 22-9 + 23-1 + 23-2 +23-8 -14-9 - 2-5 + 6-4 + 237 + 39-1 + 5I-0 + 63-0 + 747 I 2O 595 323H7 + "'93 63 ! 3 66 181-46 + 22-41 ... Means Group 343. A large regular spot. Group 339. One small spot. Aug. 7-149 8-234 9-582 10-407 1 1 -469 12-485 13-488 '4 15 16-118 17-562 18-241 19-508 2O'2l8 I I G G G G G Me G I G I o 29 48 140 73 197 200 No pho No pho 72 5 37 20 8 7 '75 275 444 689 795 688 tograph. tograph. 484 280 243 78 35 O 48 44 104 45 I 10 1 06 (85 (64 43 39 35 34 25 83 292 250 329 425 444 364 340 315 290 21" 227 133 107 235-1 236-3 235-8 235-0 235-0 234-3 234-3 234-5 234-6 234-8 235-0 235-3 235-2 234-2 + 23-6 + 23-8 + 23-8 + 24-0 + 24-4 + 24-6 + 24-6 + 24-7 + 24-8 + 24-9 + 25-3 + 24-8 + 25-6 + 25-0 -89-3 -737 -56-4 -46-3 -32-2 IQ"? July 21-507 22-219 23-573 G I G 9 16 25 9 o 1 1 33 107-8 32 107-7 7 107-2 +23-5 + 22-9 + 22-9 -76-6 -67-3 -49-9 4 24 107-57 + 23-10 ... _ 11 + 5'6) + I7-4) + 29-1 +48-3 + 57-6 + 74-2 4-82-6 Group 340. A cluster of very small spots. July 26-553 27-446 28-090 G G I 5 7 60 99 5 5 o 40 46 66 59-0 57-9 59-1 +25-4 +25-3 +25-3 -587 A 8-0 -38-2 56 273 234-97 + 24-56 ... TAKEN AT GREENWICH, IN INPIA, AT ME1.BOUHNK, AND IN MAURITU's. IN THE YltAKS 18?8 TO 1881. M .is Hii't BattognpUi Positions of Uroilps of Sun S].otH-~ro///! ,*>A| I r ojecwQ Area of Are. for Group. M,.,. I...1,-,. uid, .,( Cl.M.p. M.,,, Ut, til 1, ,,l i; r ,.ii|.. :,,. frnni Ontlnl Mtridi.B Umbra. Whnl,. Spot Urabra. Whole S]K)t. til. It of Croup. Umbra. Whole S|K.t. Umbra. Whole Spot. Group 343A. A pair ofimtll spots. Group 346. A regular spot Several small s|>ots appear near it on August 1 3, fanning with it a long straight stream. I88o. d 8-234 I 1 1 45 12 49 8-8 o 16-9 o +58-8 l88o.., G G G G G Me G I G I o 6 18 4 53 N*.. ph. No pho 7' 76 105 12 5 '9 | 63 127 267 tograph. tograph. 450 368 3|9 169 3* 8 ,6 >7 33 (35 (37 4 47 70 10 5 48 70 57 9 165 '94 223 *S* 227 *4* '47 36 216-7 216-4 216-3 2 I 6-0 215-4 214-6 213-9 213-1 212-6 21 I'O 2IO*2 211-1 o 19-2 -.91 ~'9'3 O -75-5 -64-9 -50-9 ! M?ns 12 49 8-8 169 10-407 11-469 Group 3438. A >inall [iot. 12-485 13-488 '4 '5 16-118 17-562 18-241 19-508 -18-9 -19-2 19-0 18-9 -187 18-9 -i 9 -j -18-9 -18-6 -37-8 -25-1 -H'3) - 3'4) + 7'4 + 259 + 33'3 +49'* + 59'5 Aug. 8-134 I 10 45 6 27 329-1 -11-9 + 19-' 1 Means 6 -: 329-1 -21-9 20-218 *7 146 213-94 19-00 Group 344. A Urge regular spot Group 347. A small regular spot, with a companion on August 16. Aug. 9-582 10-407 I I -469 12-485 13-488 '4 5 16-1 18 1-562 18-241 19-508 2O'2l8 G G G Q Me G G I 3 *7 25 39 48 No pho No pbo 33 44 20 9 9 102 170 122 212 228 tograph. 'vripti. '57 H7 130 50 37 44 27 1 16 24 *7 (4 <" '9 3* 7 '3 ! 150 169 79 '3' "9 n'. 104 91 1 06 no 69 101 225-4 225-6 2257 225-6 225-4 225-6 225-8 226-0 226-7 227-0 2267 228-4 ~'7'5 -'7'5 -17-1 16-9 -16-5 -16-4 -16-3 -162 -16-2 -16-3 -16-1 -i 6-6 -66-8 -557 -4''5 -28-2 -15-1 - 3'3) + 8-5) + 20-3 + 40-0 + 49'3 + 657 + 76-8 Aug. 16-118 17-562 18-241 Me G I '3 *3 8 "4 55 44 10 3' 20 8 I 76 105 252*6 156-4 *57'4 + 21-4 + 20-6 + '9'9 +46-9 + 697 4-797 20 89 255-47 +20-63 > Group 348. A stream of small spots on August 18. The leader nan become a large composite spot by August 19. Means 24 3 226-16 16-63 Aug. 18-241 19-508 2O'2l8 21 503 22*261 23-205 24-216 I G I G I I I 4 'S 9 189 1 16 85 86 o '54 775 938 650 571 444 12 21 86 121 103 104 1 4 8 8 1 1 86-9 452 187-2 602 188-5 576 189-4 664 189-9 821 188-0 36 1817 + 22-8 + 22-9 + 22- 7 + 22-8 + -4 + 2I-9 + 217 + 9'2 + 26-2 + 36-9 + 54'8 + 65-J + 75'9 + 82-9 Group 345. A regnUr spot Aug. 9-582 10-407 11-469 12-485 13-488 4 '5 16-118 '- 18-241 19-508 20-218 21-503 G G G G G Me G J Q I G 20 22 44 90 80 No pho No |.iiu 56 77 66 4* 43 4 73 184 287 396 365 to|3ph. tograph. 33 353 328 256 219 161 45 28 38 60 46 (4 (35 29 44 4 1 33 43 75 1 66 239 2 JS 264 21 I '99 188 176 ,203 204 203 217 33 213-5 213-0 213-1 213-5 213-3 213-2 213-1 213*0 212-4 212-5 211-5 211-9 21 ro + 21-6 +rj + 20-9 + 21-0 + 21-0 + 21-1 + 21-3 + 21-4 + 2l8 + 217 + 22-4 + 21-9 + 22-4 -787 -68-3 -5-f -40-3 -27-2 -'5-7) - 4-z) + 7'3 + 257 + 34'8 + 5'5 + 60-3 + 76-4 83 462 187-37 +22-46 ... ( iroup 349. A small apot on August 11, not seen on August 21. The croup has re-appeared as a pair of small spot* by Auguit 13. These both hare greatly increased in size by August 30 and 31. Au-. 21-503 22-261 23-205 24 116 25 26 G I 1 I ... '7 '7 35 No pho 1 No pho I 33 65 122 ograpb. ograph. '9 12 21 (6 ,,, 36 46 7* 59 47 71-2 67-8 69-8 69-0 68-3 f2 3 'l f22-2 -f-227 -f-22-6 f22- 4 -634 -44'J 29-0 -156) - 2'*) Means ... ... 43 217 212-69 + 21-52 94 AREAS AND HELIOGRAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. Date. Greenwich Civil Time. Where taken. Projected Area of Area for Group. Mean Longi- tude of Group. Mean Lati- tude of Group. Longi- tude from Central Meridian. Date. Greenwich Civil Time. Where taken. Projected Area of Area for Group. Mean Longi- tude ol Group. Mean Lati- tude of Group. Longi- tude from Central Meridian "- S>t Umhra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Group 349 continued. Group 353. One small spot. i88o. d Aug. 27 18-506 29-236 30-285 31-516 Sept. i -404 2-517 G I I G G G No pno 43 95 68 26 o ;i (graph. 39 '74 459 469 252 55 (5 o 27 7* 74 5' o J5 22 109 348 5'4 443 218 o 67-5 66-7 66-0 66-8 66-0 657 61-3 o + 22-2 + 22-0 + 21-8 + 21-6 + 21-9 + 22-0 4-23-8 o + !!) + 24-6 + 33-5 +48-2 + 637 + 74-6 + 85-4 1880. ,, Sept. 2-517 3-559 4-402 5-171 6-281 G G G I I 9 10 7 7 >7 '9 20 24 3 IO 8 5 4 34 21 16 16 18 258-9 258-6 258-5 259-1 259'3 + 187 + 18-5 + 18-6 + 18-4 + 18-3 o -77-0 -63-5 -52-5 -417 26-9 5 21 258-88 + 18-50 24 150 67-17 + 22-36 Means * * Group 354. A regular spot. A pair of small spots is seen near it on September 10 and the succeed- ing days. Group 350. Three very small spots ; the first at a little distance from the other two which are close together. Sept. 4-402 5-171 6-281 7-583 8-480 9-418 10-600 1 1-266 12-321 13-608 G I I G I G G I I G 20 28 35 48 64 57 44 64 28 o 54 105 83 176 224 252 '74 142 1 06 3> 49 40 3 1 32 37 3i 23 34 16 o '34 148 163 117 130 137 9 * 76 60 20 230-2 230-4 230-5 230-0 231-3 230-5 230-5 2307 230-1 229-6 + 25-0 + 24-8 + 25-2 + 25-2 + 25-0 + 25-4 + 25-4 + 24-8 + 24-8 + 25-1 80-7 -70-4 -557 -39-0 -25-9 -H'3 + ''3 + 10-4 + 23-6 + 40-2 Aug. 28-506 G *7 60 16 36 60-0 2O'I + I7-9 16 36 60-0 2O'I ... Group 351. A regular spot, with a small companion on August 28. Means 29 108 230-38 + 25-07 ... Group 3 5 5. A number of small spots in a straight stream. The group rapidly increases in size and becomes a very large stream by September 1 1. Aug. 28-506 29-236 30-285 31-516 Sept. i -404 2-517 3'559 4-402 5-171 6-281 7-583 8-480 G I I G G G G G I I G I 26 '5 3<> 54 35 55 42 40 39 36 >9 23 IOO 77 126 256 205 223 209 208 1 80 'Si I 12 82 49 '7 24 :; 28 21 21 22 24 18 3 2 189 90 IOO "55 112 "3 105 109 IOI IOO 105 115 326-7 326-8 327-2 327-2 3*7'3 327-3 327-4 327-5 3277 327-7 327-5 327-4 + 9' 6 + 97 + 10-0 + IO'I + 10-0 + 10-4 + 10-3 + 10-6 + 10-5 + 10-5 + 10-7 + 97 -75'4 -657 -5I-4 -35'' -23-3 - 8-6 + 5'3 + 16-5 + 26-9 +4''5 + 58-5 + 70-2 Sept. 5-171 6-281 7-583 8-480 9-418 io"6oo 1 1*266 12-321 13-608 14-248 I I G I G G I I G I I 16 66 76 H7 183 345 405 354 21 I 188 66 62 308 334 648 818 1194 1584 1436 983 959 350 2 4 59 49 87 IO2 '94 239 236 iS8 205 153 87 275 219 38i 457 674 935 962 888 1058 824 *35'4 235-6 2377 238-1 239'5 240-1 240-3 240-1 240-6 239-6 242-4 -17-9 -18-1 i 8-0 -17-9 -17-9 -17-4 -I7'7 i 8-0 -17-6 -17-6 -177 -65-4 50-6 -3i-3 -19-1 - 5'3 + 10-9 + 20-0 + 33'6 + 51-2 + 587 + 74'5 26 116 327-31 + 10-18 15-241 140 615 239-04 Group 352. Three small spots. Group 356. A diminishing spot on September 5, 6, and 7. The group has disappeared by September 8, but three very small spots have appeared near its place by Septem- ber 10. Sept. 2-517 3-559 G G 3 o 74 12 1 1 o 69 16 30-3 27-4 -12-9 12-2 + 54-4 + 65-3 Sept. 5-171 6.- . I I G 1 1 8 8 49 45 27 22 1 102 49 '9 222-7 222-9 222-5 + 24-2 + 24-3 + 23-9 -78-1 fi*-i Means ... 6 43 28-85 -12-55 7-583 3 3 -46-5 TAKKN AT GRKKXWICH, IN Isi'IA, AT MKLBOt'RNR, ANP IN MAURITIUS, IN THI YtAKS 1878 TO 1881. 95 Amis iiinl Heliograpliir Positions of Groups of Sun Spots- -coiUin\ted. Date. wich Civil Tim.'. Wlurr taken. Projected Area of Area for Group. Me. n Longi- tude of Group. Mean Un- tti.le of Group. Longi IU,i.' from Central Meridian. Date. QsjMBwU CiTil Time. Where taken. Projected AIM of Am ON l-inhra. for up. M rxmgi tud* of Group. Mran Uti tudeof Grun|>. a from (Vntr.1 Umbra. Whol. Spot. Umbra. Whole S,.,l. Umbra, \VI,.,|.. Spot. Wln.lr Spot. Group 356 continued. Group 359 continued. 1880. J Sept. 8-480 9-418 10-600 I I G O O O 22 o II 225-3 + 22-9 o - 3'9 1880. d Sept. 1 1-266 12-321 13-608 '4'*4 8 15-241 16-590 ' 7'479 8-564 I I G I I G G G '4* 87 85 80 80 5* 76 71 410 " 336 3'9 33' 180 268 187 85 47 44 4* 45 g ll *44 212 74 167 iS6 184 '3 212 190-0 190-4 189-9 189-2 1907 189-0 188-8 188-6 + 21-8 + 22-1 + *2'J 4-11-1 -f-ll'O -f-ii-3 4-22-4 4-ii-i -303 -161 + -J + 8-, + *2-8 + 38-9 + 5>-$ + 64-6 6 3 3'35 + ^3-83 ... lA iinall spot tine lar^i C-roup 357. on September 7. The group rapidly increase! in aiie, and hat become a itream by September n. Means 64 234 18967 + " ... Sept. 7-583 8-480 9-418 10*600 1 1-266 12-321 13-608 14-248 15-241 16-^90 G I I t; i i a i i G o 9 * 5 84 39 l8l 772 35' "49 453 "775 469 1820 362 1690 313 1328 188 816 76 293 6? Ill 196 2 1 9 267 240 230 191 '57 *5 "5 i 73 6 94 975 1036 I 101 981 820 658 213-9 216-7 218-8 220-8 220-8 2217 221-5 221-8 223-3 224-2 -"77 -16-1 -16-4 -16-3 -16-5 -16-5 -16-6 -17-1 -'7'5 -'7'4 -55-' -40-5 26-0 - 8-4 + 0-5 + 15'* + 3'-' + 40-9 + 55-4 + 74'' tiroup 360. A small regular spot, with occasionally some yery small companions. Sept. 15-241 16-590 >7'479 18-564 >9 20-483 21-214 21-530 I G G G G I G 2 9 1 1 22 No pho *4 *7 3 S 18 & tograph. 6l "9 12 3 7 7 ll (i 12 '4 2 2O '4 33 48 40 & 1 98*0 98-6 98-6 99'9 101-3 102-7 101-8 105-0 4-16-4 4-16-4 4-16-1 4-16-2 + 16-3 + 16-3 + I5-3 4-16-2 -69-9 -$'$ -397 -24-1 -,o-i) + 4-o + H-I + 33-3 hfeang 171 699 22O-35 l6-82 1 A small regu, seen on i spota. Group 358. ar ipot, with a small companion on September n. The group in not September 11, hut has re-appeared by September 13 as two close pairs of 8 3* 100-74+16-15 ... (roup 361. A small regular spot with double nucleus, frequently with some small companions. The group is not seen on September 2$ and 16. Bept. 7-583 8-480 9-418 10-600 1 1-266 12-321 1 3-608 14-248 15-241 16-590 G G < G 12 '7 1 I 9 o 22 48 *3 30 5' 48 *3 37 o 50 179 68 9 3 3 7 5 o 12 *7 15 3' 4<> 3* '3 20 *7 103 45 8 2O7'O 2O7'O 206-1 206-6 206-5 205- 9 XO5-2 2O6'5 205-6 + 23-0 + 23-2 + 23-6 + ^3-4 + *47 4i3 : 8 + 24-2 + *4'5 + 4'4 62-O -50-2 -387 -22-6 -13-8 + 16-5 + *4-3 + 38-6 + 55'5 Sept. 15 -24 1 16*590 '7'479 18-564 19 , 20-483 21-214 22-530 23-285 24-412 25-436 26-300 27-407 I G G G G I G I I r, I G 11 21 28 20 No pho 21 '4 6 II 35 79 82 112 tograph. 4* 3' 4 2 3* 38 7 *4 21 11 12 (" 7 3 o 8 68 78 62 68 45 22 16 22 18 *7 o 28 91-0 89-7 89-8 90-1 897 89-4 89-6 88-5 89-0 93-o 94'3 18 + '7'9 4-17-8 + I7-S 4-17-6 -f-17'9 47- 4-17-6 4-'7-3 + 7- + 17-4 -76-9 60-4 -48-5 -33-9 21-6 ~ 9 J 4- 0-6 4 16-8 + 27-3 +46'* + 87-0 UCetnfi 9 3* 2O6-27 + *3-87 Group 3 59 A. 1 Two m all spot*. 9 35 9'37 417-67 ... k 3pt. 9-418 I ll 66 9 33 248-2 + 12-4 + 3'4 Group 361. A small spot. A second spot is seen near it on September it. increase* in size. riii- gioup + 11-3 420-8 421-2 4ll'7 410-7 rapidly + 377 + 49'4 4-63-0) + 76-6 + K3-2 i MM ns 9 33 248-2 + 11-4 (iroup 359. P A large regular spot, frequently witli one or two companions. Sept. I7-479 IS 564 9 20-483 21-214 G G I 20 21 No pho '5 n 4* I2O tograph. 1 10 74 !i (22 1 4 6 i7 95 '53 21 1 3" 176-0 '73> '-4-3 '75-3 172-2 7-583 8-480 9-418 10*600 G I I G *4 8$ 109 122 102 50 312 I0 9 376 94 41 1 81 216 393 326 *75 I90-8 4-22-4 189-5 4-2i-z 190-0 421-9 189-1 +21-5 -78-2 -677 - 54 -! > -40-1 Means ^ 162 174*4 +*<-4 96 AREAS AND HELIOGRAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. Date. Greenwich Civil Time. Where taken. Projected Area for Area of Group. Mean Longi- tude of Group. Mean Lati- tude of Group. Longi- tude from Central Meridian Date. Greenwich Civil Time. Where taken. Projected Area of Area for Group. Mean Longi- tude of Group. Mean Lati- tude of Group. Longi- tude from Central Meridian. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Group 363. A small faint spot. Group 367. A small faint spot on September 25, not seen on September 26. The group has re- appeared as a close cluster of very small spots by September 27, and has developed by September 29 into a h'ne stream, consisting of a large regular spot and a great number of smaller spots. I88o. Sept. 18-564 G O 17 O II o 89-8 4-25-2 -34-2 1880. Sept. 25-436 26-300 27-407 28-308 29-577 30-304 Oct. 1-521 2-396 3-285 4-268 G I G I G G G I I O O 4 5' 196 287 191 90 129 40 21 95 288 I 1 00 1204 1005 594 606 229 2 2 9 "4 181 '45 80 '75 103 16 o 54 162 645 758 772 558 871 57 o 352-3 356-7 356-1 355-3 356-0 355-2 3535 355' 1 352-3 o 20-9 -19-1 -'9'4 -19-9 -.9-8 19-8 2O'I -20-3 2I-I o 41-0 10-6 + 07 + 16-6 + 26-9 + 42-2 + 52-0 + 65-4 + 75-5 Means O II 89-8 +25-* Group 364. A number of small and unstable spots in an irregular straggling stream. Sept. 18-564 9 20-483 21-214 22-530 23-285 24-412 25-436 26-300 27-407 G G I G I I G I G o No pho 9 Si 3i 27 31 *5 34 ii 48 tograph. 46 182 208 162 189 i*3 126 97 o (3 6 2 9 16 '4 '7 '5 2 4 '4 49 39 29 105 1 08 83 103 74 9' "3 63-2 62-6 61-9 61-9 63-1 65, 64-5 65-3 67-5 71-0 + I9-4 + i9'4 + I9-3 + I9-4 + I9-5 + 19-1 + '9'3 + 19-4 + I9-5 + 19-0 -60-8 -48-8) -36-8 -27-1 - 8-6 + 3'4 + 17-7 + 32-0 +45'6 + 63-7 83 442 35472 2O-I2 ... Group 368. A large regular spot, with occasionally one or two small companions. '4 79 64-61 + I9-34 Sept. 24-412 *5'436 26-300 27-407 28-308 29-577 30-304 Oct. 1-521 2-396 3-285 4-268 5-238 I G I G I G I G G I T I 20 46 43 5 96 78 76 64 *3 61 30 13 64 259 216 280 374 349 428 30' 245 292 12 62 36 47 33 3' 55 43 43 4 '7 55 42 40 'i5 264 165 '73 214 193 242 189 178 268 170 '95 336H 337-2 339 -I 340-6 341' 34I" 1 341-6 341-8 3417 341-8 34 2 '3 34 2 ' 1 -,7-8 -18-6 -18-2 -17-9 -17-8 -17-8 -17-8 -7-3 ->7'5 -17-9 18-0 -18-1 -70-4 c6-t Group 365. A small faint spot, not seen from September 21 to 24. 5 ' -42-8 26-7 -14-4 + 2-4 + 12-5 + 28-8 + 40-1 + 52-1 + 65-5 + 78-1 Sept. 20-483 21-214 21-530 23-285 24-412 25-436 26-300 G I G I I G I o o 25 o o o o 8 22 o 18 O O 5 o 14 53-3 577 57-3 + 23-7 + 22-3 + 21-4 -45-4 + H'4 + 35'4 Means 4 '97 34 -56 T--8n Means o 5 56-10 + 22-47 I/ 89 Group 369. Some very small spots in a close cluster. The group changes its character very rapidly, increasing in size and distinctness until it reaches the central meridian on Septem- ber 29, and then as speedily diminishing again. On September 29 the four groups, Nos. 366 to 369, almost touch one another, and form an almost continuous stream lying along the igth parallel of south latitude for more than 40. Group 366. A regular spot, followed on September 2 by two smaller spots. The group diminishes day by day and has disappeared by September 26, but has appeared by September 27 as a short stream. Sept. 22-530 23-285 24-412 25-436 26-300 27-407 28-308 19-577 30-304 Oct. 1-521 G I I G I G G G I G 1 1 20 8 9 o 1 1 7 21 2 64 53 52 27 57 50 43 59 77 '5 '7 5 5 6 4 o 16 2 79 45 35 16 o 32 30 28 120 86 10-3 I3-3 13-6 14-8 15-9 16-6 9-6 10-2 12'0 -19-5 -19-3 -i 8-7 -18-8 - i'8-s 19-0 19-8 19-8 -19-2 -6, -4 -48-4 -33'* -18-5 + 8-6 + 21-2 + 30-9 + 4 1-I + 59-0 Sept. 25-436 26-300 27-407 28-308 29-577 3'34 Oct. 1-521 2-396 3-285 4-268 G i I G I G G I I 12 23 124 112 53 10 o 3 o 43 69 120 526 444 251 5' ,1 '3 o ii 16 76 63 30 6 o 2 57 63 84 3*' 251 140 30 6 12 12 33-8 330-9 331-0 331-0 3307 330-9 332-1 333-6 329-6 328-9 -'97 19-6 -19-2 -19-1 18-9 -19-1 -18-5 -18-1 20-0 19-6 -62-5 -51-0 -36-3 -24-4 - 8-0 + i'8 + 19-1 + 32-1 + 39'9 + 52-' M,eana 7 47 12-92 -19-18 20 9 8 330-95 ig-lS TAKEN AT ( JllKKN WK'H, IN I.NDIA, AT MKI.I'(M'I;NK, ANI' IN .MAIKITII'S, IN 11IK VKAK8 1878 TO 1881. 1 Areas and EUiogfftphk I'usitions of (Iroupa of Suu Spots continued. Dte. Greenwich 1 Civil Tnnr. Where taken. Projected Area of Area for up. Mean Longi- tude of Group. Mr.u Lati- tude of Group. baud Mi from Central Meridian Date. Greenwich Civil Tim. . Where taken. Projected Area of Area for Group. MM Ixingi- tude of QrNp, M.,M Lati- tu.l. .,( <;,..,, p. Longi- tude !r..n, Central Meridian Umbra. Whole Spot. Umbra. Whole Ipot Umbra. Whole Spot. Umbra. Whole Spot. (Jroup 370. 1 A mmilxT or small spots in cloM clutter on September 26. The group increases in irr and distinctness Tery rapidly, finning on September 19 a line stream, tin- lea5 151 o 89-1 89-1 90-3 91-2 92-1 93-4 95-0 96-1 o + 19-6 +20-3 + 18-2 + I8'5 + l8- 9 + I8'5 + I8-0 + I7-6 o -43'4 29-6 + 'n-6 + S7) + 39'8 + 54'4 + 67-7 + 83-3 o IO 154-1 + 28-0 ... Group 378. A few small spots, only one of which remains on October 12. Two spots on October 13 and 14. Oct. 10-284 11-486 12-431 '3'556 14-212 r G G G I 7 9 o o "3 56 7' 6 48 39 6 o o 21 3' 45 5 5' 60 212-0 212-5 214-5 2i3'3 214-0 -15-8 -157 -15-7 -14-5 15-1 + 14-6 + 30-9 + 45'4 + 59' 1 + 68-4 38 172 92-04 + 1870 ... Group 38o|. Two small spots, p Group 380. Means 6 38 213-26 -'5'36 Group 379. Two small spots. Oct. 16-249 I 6 35 3 '9 108-7 + 24-3 IO'O Oct. 12-431 G o '3 o 9 210-2 + 30-3 +41-1 Means 3 '9 108-7 + 24'3 o 9 210-2 + 30-3 Means Group 381. A regular spot, with occasionally one or two small companions. Group 380. A large regular spot, with occasionally a small companion. Oct. 14-212 15-197 16-249 17-288 18-556 19-284 20 21-284 22-290 23-179 24-283 25-386 I I I I G I i i i i i 9 9 22 3' 32 50 No pho 49 30 27 12 44 59 98 119 126 139 tograph. 161 102 73 25 12 26 12 2O 21 18 27 (26 26 17 '7 10 128 86 9 81 7 2 75 80 85 % 46 20 4 64-1 61-7 62-3 64-0 63 '9 64-1 63-8 63-5 63-6 62-8 63-4 63-0 + 21-2 + 2I-I + 21-4 + 21-4 + 21-5 + 21-2 + 2I-I + 21'0 + 20-8 + 21-2 + 21-2 + 21-5 -81-5 -70-8 -56-4 -41-0 -24-4 14-6 - 17) + 11-2 + 24-6 + 35'5 + 50-6 + 64-8 Oct. 12-431 >3'556 14-212 15-197 16-249 17-288 18-556 19-284 20 21-284 22-290 23-179 G G I I I I G I I I I 16 44 63 65 63 63 5i 79 No pho 46 H 4 104 172 300 33 302 3U 257 267 tograpli. 1 86 79 26 3' 46 53 44 37 34 27 43 (37 3i 20 5 196 179 254 205 177 168 136 '45 '35 125 66 3 93-1 92-8 92-5 927 9 2 '3 92-1 91-8 91-9 91-6 91-2 90-9 91 -o + 23-1 + 23-2 + 23-3 + 23-4 + 23-8 + 24-1 + H'4 + 24-2 + 24-2 + 24-2 4-24-2 + *4'5 76-0 61-4 -SS' -39-8 26-4 -12-9 + 3'5 + 13-2 + 26-1) + 38-9 + 5'9 + 637 18 70 63-35 +21-22 Means 34 151 91-99 +23-88 Means Group 382. A small faint spot. Group 380*. A few small spots,/ Group 380. Oct. I3'55 6 14-212 G I o 4 28 38 5 5 2 49 78-3 78-2 4-23-0 + 23-0 ~75'9 -67-4 Oct. 18-556 G O '5 o ii 44-5 + 24-0 -43'8 Means ... i 3 5' 78-25 + *3' ... o ii 44-5 + 24-0 ... TAKEN AT GREENWICH, IN INHIA, AT MlCLlUifUNK. ASH IS AlAURlTUX IN TIIK YKAKS 1878 TO 1881. M 1 Areas and Heliograpliic Positions of Croups of Sun Spots continued. iWldl Civil Tune. Where taken. Projected Area of Ana for Group. Mean Longi- tuile of Group. KM Uti- tiule of Group. Longi- tude from (Vntrl Meridian. DaU. Creenwich Cinl Time. Where taken. 1'n'jeoted Area of Area for Group. M...U 1... .i/l tllilr Of M.,n Lati- tud* of Group. LOM! tude from Ontrml Mrri'liu. Umbn. Whole Spot. I*"*- si'f Umbra. Whole Spot " 5 Group 3- A large rompw.it* spot, with a number of com|*Dionii, forming an irregular stream. Group 382?. Two small spoU, /) the place nf Group jtiC. 1880.4 19-284 2O 11 22-290 23-179 24-283 25-386 26-284 ' 35 28-285 1 *9*8j I 1 1 4 NII plio 64 93 '39 165 lot 71 78 63 16 103 tograph. 47 39 6 696 7*9 53 *73 322 '95 44 9 ( f 62 69 90 11 4' 48 45 '5 463 4 *2 396 *97 449 4*3 *97 156 199 '4' 4* 357-5 357-8 358-1 358-0 358-1 358-1 357-9 358-4 358-7 359-8 '4 20-3 81-2 ,. <-.-! 1880. d Oct. 29-285 I 10 49 6 *9 o 335-3 w + 18-1 +28-5 20-9 -21-5 -21-9 -21-9 -21-8 -21'5 2O'9 -204 -1 9 7 / /; -54'* -41-0 29-2 -14" - o-3 + 12*0 + 25-* + 39' 8 + 54-6 6 *9 335-3 + 18-1 ... Group 383. Three or four small spoU in a compact cluster. Oct. 30-563 31-293 Nov. 1-283 2-478 G I I G *9 '5 41 o 59 *3 60 10 24 o 4 47 40 "4 235-8 *35'5 234-8 *34'7 -22-6 -227 ** *Q -54'* -44-8 -3*'5 -16-8 1 M ' i iis 53 199 358-54 21-O3 ... -22-4 Group 382!'.. A number ofipoti in a straight stream, p Group 381. 8 35 235-2 22-63 Group 38 3 A. A small spot lOot. 21-284 22-290 23-179 24-283 25-386 26-284 I I I 1 I 1 35 79 45 10 161 37 6 54 449 '53 4* 9 47 77 9* 78 47 87 "4 355 4 f 263 '99 69-6 70-2 70-8 71-5 72-1 71-4 + 18-7 + 18-6 + 18-7 + 18-2 + '77 + 18-2 + '7'3 + 31-2 +43'5 Nov. 1-283 I 3* o 3 326-1 + 21-6 +58-8 + 58-7 +73'9 + 85-0 o 3' 326-1 + 21-6 Group 383!!. A small spot 1 Means 60 260 70-93 4-18-35 Group 3820. A small spot. Nov. 1-283 I 3 9 2 7 22O'0 9" -47-3 Means 2 7 220-0 -9-1 ... Oct. 22-290 23-179 24-283 I I I 4 8 26 '7 *4 1 4 '7 '7 3*7-3 3*7-5 3*77 + 16-1 + 158 + 16-0 -7'7 -59-8 -45"' Group 384. A number of small unstable spots in a long irregular stream. \1 3 *; 3*7-5 + '5'97 Nov. 1-283 2-478 3-469 I G G 48 44 9 '55 218 59 3 35 12 96 '79 68 3017 303-3 302-8 + 16-3 + 16-3 + 15-2 -T-34'4 + 51-8 + 64-3 Group 382D. Two small [>ot, nf Group 38iA. Means 26 114 302-60 + '5'93 ... Oct. 27-305 I 29 90 16 50 350-9 12-9 +18-0 (iroup 385. A small spot on October 31, n of Group 383. New spots form behind the first on the succeeding days, making a scattered stream. Means 16 50 350-9 -12-9 (Ir.iiip 382E. A few small spots in a short stream. Oct. 3'" 2 93 I Nov. 1-283 I 2-478 G 3-469 G 4-575 G 5-250 I 12 3 20 43 36 33 28 26 190 '79 "9 1 10 Q 2 I I *3 20 '9 21 6 105 97 65 62 236-0 2367 236-4 234-6 234-2 233-8 -i;-o -17-1 -,6-3 -17-1 ~'7'3 -17-2 -44-3 30-6 Oct. 27-305 28-285 29-285 I 3 19 9 47 I 36 in 2 5 18 it *5 56 302-5 302-5 304-2 + 11 '6 + 11-6 + 11-2 -30-4 ~' 7 '1 2'6 -15-1 - 3'9 + 10-3 + '8-9 Means 8 3 303-07 + II-47 '4 61 235-28 17-00 ... 100 AREAS AND HEUOGRAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. Date. Greenwich Civil Time. Where taken. Projected Area of Area for Group. Mean Longi- tude of Group. Mean Lati- tude of Group. Longi- tude from Central Meridian. Date. Greenwich Civil Time. Where taken. Projected Area of Area for Group. Mean Longi- tude of Group. Mean Lati- tude of Group. Longi- tude from Central Meridian Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. AVhole Spot. Group 386. A small regular spot. Group 392. Two spots, of which the preceding rapidly increases in size, and coalesces with the following spot, to form on November 15 one very large spot very irregular in form. It diminishes in size after November 15, and breaks up into several fragments. 1880. Nov. 1-283 2-478 3-469 4'575 5-250 I G G G I 9 5 7 12 12 35 *4 34 35 34 '3 4 5 7 7 49 21 2 4 21 '9 o 20 I 'O 200-8 20O-0 199-9 200-2 o -19-1 -18-4 -18-7 -18-7 -187 o -66-3 -50-7 -38-5 -24-0 -147 1880. d Nov. 13-283 H'344 15-300 16-448 17-295 18-076 '9'545 20-558 21 22-384 23-309 I I G G I Me G G I I 17 103 291 126 164 40 64 32 No pho 47 22 71 3*4 934 775 662 520 375 3*8 tograph. 186 4i 15 69 171 68 88 22 39 23 (42 61 60 64 220 54 8 419 356 283 230 2 3 8 240 2 4 2 I I I o 54-5 56-2 56-5 57-0 56-8 56-0 56-3 55'9 55-6 55-2 56-2 + 2I'2 + 2I-9 + 217 + 22-0 + 21 -9 + 22-5 + 22'2 + 22-0 + 22'0 + 22'0 + 21-9 -54-6 -38-8 26*0 10-4 + 0-6 + IO'I + 29-8 + 4 2 7 + 54'4) 466-1 + 79'3 Means 7 27 200-38 18-72 Group 387. A small spot. Nov. 2-478 3-469 4-575 G G O 3 o 7 1 1 7 3 o 9 10 5 185-4 185-0 185-0 -14-8 ic -7 -66-1 -53'5 -38-9 -15-8 Means 60 268 56-02 +21-94 ... Means i 8 185-13 -i5'43 Group 393. Two spots on November 18. The group has greatly increased by November 19, and consists of two large regular spots with one or two very small companions. Group 388. A small spot. Nov. 4-575 G 4 4 2 8 206-7 + '4 -17-2 Nov. 18-076 9'545 20-558 21 22-384 2 3'39 Me G G i I 81 103 No pho 68 *5 127 540 592 togrnph. 212 IOI 48 72 (80 87 65 66 35 411 34 2 274 278 52-6 55' 55-5 55-6 557 56-2 - 9'4 - 9'9 _ 9-7 - 9-6 + 67 + 28-5 + 4^3 + 54-5) + 66-6 + 79'3 Means 2 8 206-7 + 22-4 Group 389. Two small faint spots. - 9'4 - 9'4 Means ... ... 59 281 55-10 - 9'57 Nov. 8-404 G o '5 3 245-0 + 29-1 +717 Group 394. A few small spots in a short stream. Means O 30 245-0 + 29-1 Group 390. A small spot. Nov. 17-295 18-076 19-545 20-558 Means I Me G G 60 3 43 78 157 238 287 230 33 16 23 45 20 86 125 'S3 133 124 38-8 37'5 39'4 39-2 3873 -13-2 -17-4 -13-7 - 8-4 -13-2 +12-9 13-0 +26-0 13-28 Nov. 9 '404 G o '9 O 1 1 136-1 -12-7 -24-1 o Group 391 Some very small spots in a ii 130-1 compact cluster. -127 Group 395. A small faint spot ; it is not seen from November zo to November 24, nor on November z6. Nov. 9-404 G 3 16 2 1 1 116-6 + 9"' -43'6 Nov. 19^545 20-558 21 22-384 23-309 24-302 2 5'55 26-182 27-552 G G I I I G I G No pho O 9 o 8 tograph. O O O 4 2 o 4 (o o o 6 o o 6 o o) o 27 15 34*7 34'7 342-1 + 20-8 + 20-8 4-21-4 -43-8 + 33'9 + 6n Means 2 ii 1 1 6-6 T 9' 1 Group 392 A. A small spot. Nov. 14*344 I o 6 o 7 32-0 -15-8 63-0 Means o 7 32-0 15-8 i 5 : 342-17 +21-00 TAKEN AT GREENWICH, IX INDIA, AT MELBOURNE, AND IN MAfKITIUS, IN TUB YEARS 1878 TO IBM. 101 Areas and Heliograpliic Positions of Groups of Sun Spots continued. Dsita. Greenwich Pirne. Win-re Uken. Projected Area of Area for Group. HIM lude of Group. Mean Lati- tude of Group. Longi- tude from Central Meridian. Data Greenwich Civil Time. Whne taken. Projected Area of Area for Group. Mean 1. .!!/:- Group. Mean Uti ii 1.- .-i Group. Longi- tude Ontral Meridian Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot Umbra. Whole Ipt* 1880. ,, Nov. 24-302 ' Group 396. A few small spota in a short stream. Group 400. A large spot, followed by a number of small spots in a long stream. I G I G 9 44 '54 '74 37 10 35 33 3 46 1 12 "3 :o o 264-3 264-7 264-1 267-2 o -17-0 -'7'4 -i 8-0 -17-4 o -59-5 -43-' -34-9 -13-8 I88o. d Dec. 3-185 4-288 6-187 7-186 8 9-284 10-479 11-465 12-275 13-324 I I i i 'i G G I I 56 102 No pho I 9 94 No pho 166 '55 182 no 99 326 675 tograph. 929 1113 tograph. 1136 926 807 566 43 81 109 ("4 120 107 (97 87 89 120 88 1 1 1 57' 675 627 579 606 600 595 53' 53* 447 481 o 135-2 >33'5 '33'3 133-0 135-1 135-8 136-5 136-7 136-8 136-5 136-1 e -'4'4 -14-0 -14-0 -'39 -13-9 -71-6 -587 -46-S) -34'* -18-9 + 26-0 + 39'' + 62-9 fens 20 73 265-08 -17-45 14 o -14-0 -13-8 -131 -'37 -13-8 i iroup 397. A very fine stream, the principal members of which are two very large composite spots on NovemlMT 15. A great number of small spots form on all sides of the two principal spots. The following spot of the two has broken up by November 17, and rapidly diminishes on the succeeding days. 102 568 I35-3* -13-87 Nov. 24-302 *5'5'5 It-Ill 28-284 29-403 30-488 Dec. 1-185 2 3-185 4-288 G I G G I I 216 343 300 5*' 436 236 201 No pho 96 7' 653 '334 1871 2015 1*3 1854 '347 1232 tograph. 544 433 *47 198 269 i8t 293 129 "5 (97 H 1074 1238 '449 1215 1191 9*9 738 704 575 446 504 252-4 252-6 252-4 253-1 253-9 2 53'9 254-6 255-0 255-6 256-1 255-1 + 22'O + 217 -f-20-8 4-20-8 + 20-6 + 19-9 4-20-0 + 2O-I + '9'8 -7''4 -55'* -46-6 -27-9 ->7'4 Group 4-ooA. A small spot, np Group 397. Dec. 4-288 I o 9 '5 267-2 + 23-1 +75' *'7 + 12-3 + 21-9 + 35-6) + 49'3 4-62-9 O '5 267-2 + 23-2 ... Group 400 1!. A number of spota, mostly small, in a straight stream. ,. '75 920 254-06 +20-68 Dec. 6-187 7-186 I I 256 2 5 2 3 2 138 33 >S5'4 156-2 + 18-3 + 18-0 -11-8 A small faint spot Group 398. with a faint companion on November it. 28 136 155-80 + 18-15 Group 40oC. A |*ir of small spota. Nov. 25-515 26-182 *7'55* 18-284 29-403 G I G I G o 3 9 3 8 IO 3' 20 3' '4 4 7 2 5 20 4 16 2 1 8 234-2 235-0 2 34'9 2 35'9 236-2 -*4'4 -73'6 -24-5 -64-0 24-6 46-1 -*4' 2 -35'4 -24-4 -20-4 Dec. 7-186 I 21 74 20 7 209-9 +'9 -I + 559 Means 4 21 235-24 -24-42 ... 20 70 209-9 +'9 M ... M cans Group 399. Two small s|>ots very clone together. Group 4OoD. A small spot,/ Group 400. Nov. 27-552 G '5 5 337> -219 + 56-4 Dec. 7-186 I 3 *4 2 17 112 3 -16-8 -4'7 Mmii '5 337-4 - 2 ''9 Means 2 '7 112-3 -16-8 ... 102 AREAS AND HEUOGRAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. Date. Greenwich Civil Time. Where taken. Projected Area of Area for Group. Mean Longi- tude of Group. Mean Lati- tude of Group. Longi- tude from Central Meridian. Date. Greenwich Civil Time. Where taken. Projected Area of Area for Group. Mean Longi- tude of Group. Mean Lati- tude of Group. Longi- tude from Central Meridian, Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Group 401. A few small spots in a straight stream. Only one spot remains on December 24. Group 404. A large regular spot, with occasionally a small attendant. 1880. d Deo. 17-274 18-279 19-182 20-187 21-391 22-284 23-411 2 4"439 I I I I I I G G 21 28 31 30 28 16 12 6 90 110 124 148 5 42 57 3i 26 24 21 18 16 9 7 4 I 10 94 84 88 28 2 4 34 21 3'7'9 318-4 320-9 321-9 322-7 322-0 320-1 320-8 + 22-7 + 237 + 23-8 + 23-8 + 24-2 + 24-2 -1-24-9 + 24-5 o -63-2 -49' 5 -35' 20-8 - 4-1 + 6-9 + 19-8 -r-34'o 1880.,, Dec. 31-578 1881. Jan. 1-493 2 3-209 4-179 G G I I 87 45 No pho 68 34 2 74 193 tograph. 296 194 47 27 (44 61 46 148 116 190 264 262 o 209-9 2 I 1-8 212-6 2I3-3 213-6 -17-6 -17-4 -17-3 -17-1 -17-1 + I--2 + 3 I-I + 43' 2 ) + 55-3 + 68-3 TVI 45 196 2I2-24 ... Means 1 6 60 3ZO-59 + 23-98 ... Group 405. Three small spots. The last of these increases in size and becomes a large regular spot with occasionally a small attendant. Group 402. A single spot on December 17. A few small spots have formed behind it by December 23, making with it a short stream. The group has increased in size by December 24. 1880. Dec. 30-289 31-578 1881. Jan. 1*493 2 3-209 4-I79 5-54 6 I G G I I G 21 86 35 No pho 59 22 I 10 246 132 tograph. 260 142 27 1 1 46 20 (32 44 21 57 131 75 '35 194 140 54 2O6'2 204-6 204-2 204-4 204-6 204-I 203-2 -i 8-4 -19-4 19-6 -19-4 -19-1 -19-4 -19-2 - 3'5 + 11-9 + 23-5 + 35-0 + 46-6 + 58-8 + 75-9 Dec. 16-234 17-274 18-279 19-182 20-187 21-391 22-284 23-411 24-439 I I I I I I I G G '9 25 3' 3 33 46 30 23 58 55 7i 62 124 '47 146 64 81 185 29 24 22 '9 18 24 16 13 38 86 68 44 75 80 76 34 47 119 324-4 323-8 324-8 325-3 325-5 327-1 326-9 324-0 321-8 -r-13'8 + 13-6 + 13-8 + I 3 -8 -r-13'5 + 13-6 -r-13'6 + 14-2 + 13-6 -7o-4 -57-3 -43-1 -30-7 -17-2 + 0-3 + U-8 + 237 + 35-0 Means 2 5 I 12 204-47 19-21 Means 23 7 324'84 + 13-72 Group 406. A large regular spot, with occasionally a small attendant. Group 403. A large regular spot. It is eclipsed on the photograph taken on December 31 during the Solar Eclipse. Dec. 21-391 22-284 23-411 24-439 25 26-164 27-279 28-272 29' 2 43 30-289 3I-578 1881. Jan. 1-493 I I G G I I I I I G G 3' 59 82 117 No pho 74 '"3 75 92 59 (44 23 133 294 406 496 tograph. 398 617 363 434 355 277 i 146 64 75 69 79 (60 4* 62 42 56 4 2 38 34 277 252-2 377 *5-5 34' : 250-9 335 2507 280 250-5 225 j 250-2 337 250-3 204 249-0 263 2497 252 249-4 233 248-8 214 248-1 + 20-6 + 20-8 + 20-8 + 20-6 +20-7 + 20-8 + 20-8 + 21'0 + 20'I -1-19-9 + 20-4 + 20-9 -74-6 -64-6 -49'4 -36'. -25-0) -13-8 + ro + 12-8 + 26-2 + 397 + 56-1) + 67 + 1880. Dec. 27-179 28-272 29-243 30-289 31-578 1881. Jan. 1-493 2 3-209 4-I79 5-546 6-429 I I I I G G i I G G 59 3' 59 77 53 61 No pho 61 68 *o 8 294 118 i55 309 289 123 tograph. 294 215 77 43 61 24 39 46 30 35 (37 4 5 2 23 '4 3,6 92 103 185 ,6 5 7 1 131 192 165 88 73 190"! 192-2 190-9 I90-7 igO-O 1 88-0 188-4 188-7 188-8 189-1 188-0 -30-1 -31-1 -30-7 -31-1 -3i-9 -3i-5 -31-4 -3i-3 -30-8 -31-0 -30-7 -59-2 -44-0 -32-6 19-0 2 '7 + 7'3 + 19-0) + 307 + 43'5 + 6r8 + 72-3 Means 55 278 250-03 + 2O-62 Means ... 36 144 189-54 -31-05 TAKEN AT GREENWICH, IN INDIA, AT MKI. BOURNE, ASH IN MATKITII S, IN THI YlAK8 1878 TO 1881. 103 as and HaUogimphic 1'ositions of Groups of Sun Spots continued. Date. H ll Time. Whrre taki-n. p__;____j 1 .",'' I* ' Area of Area lor Group. Lnngi- in.le of Group. Km Lsti- tmle ol Group. Longi- tu.le from Central Mrri.lian Date. Greenwich Ciril Time. Where taken. Projected Area of Ana for Group. Mean Longi- in.l. .,i QtMJ Mean Uti lu.l.- .,1 Group. Loofi tuile from I .-ntr.i! Mrridian. Umbra. Wr.,,1,. Spot Umbra. Whole Spot. Umbra. Whole Spot. I'ml.ia. Whole Spot. Group 407. A rrry large regular apot, with some companions on January 6 and 7. The great spot has broken up by January 9. Group 4ogA. A small spot. iSfi.i Jan. 17-265 18284 I I 10 O 43 62 6 16 37 o 3207 311-6 o 4-18-0 O -11-3 + i-o l88l. Jan. 3-109 4-1-0 6-429 7'49 2 8 10216 11-282 .2-283 I I "5 1 IO Q 1 QO 61 (68 76 1 1 1 77 5' 53 5* 445 55< 39' 482 449 373 298 298 *74 171 200 119 o 94-4 93-5 927 9*"5 92-0 91-9 9'7 90-9 90-7 89-4 89-0 87-. o +$ 4-25-1 + *5'3 + 2 5'4 + 2 5'5 + 2 5'3 4-25-0 + ^5-6 4-25-8 4-25-0 4-24-8 -63-6 - 51-8 -34-6 -23-2 - 97 + i ") 4-11-6 4-39-0 4-50-8 + 63-5 + 747 Means ... ' 3 3* 311-15 4-17-85 Group 410. A number of small unstable spots in a short stream. Jan. 19-386 20-311 11-470 22-220 13-I59 1 I G I I A SI s6 ii o ,1! 93 77 '5 i i '7 o 30 g ll 311-9 3131 S'4'9 3 '4'4 3 '7'4 10-6 + 7-8 4-10-5 4-46-6 4-61-0 1 Means 80 347 91-32 + 15-.8 ... to-i -10-3 Oroup 4O7A. A spot, if Group 407. '7 > Means 8 50 314-56 20' l8 Group 41 A. A pair of small spota. [Jan. 13-276 [Means i o JJ - 4* 78-4 + 3"3 + 5*'9 ... 4* 78-4 + '3-3 ... Jan. 19-386 20-321 I I o 6 89 45 o 4 54 18 3'77 S'S7 4-16-4 + *5"3 4-11-6 4-13-0 Group 408. 1 A >tream of spota of the usual type, the first and last spots being the largest and most stable. Means i 4' 31670 + *5'85 Group 4108. A atream of spots, mostly small iJan. 17-265 18-284 9386 20-321 21-470 12-22O i i i G T 85 41 "4 85 9 369 433 680 614 305 61 48 89 I 12 190 210 349-5 272 349-5 53' 35' 638 349-8 645 351-0 lg i 345-3 + '7'7 + 177 4-18-. 4-18-7 4-19-2 4-20-3 + .6-5 -f~ 2Q'Q "i 4-^'Q + 57'' +77'5 Jan. 19-386 20-321 21-470 22-210 23-159 24-286 I I O I I I T 3 3 o o '5 47 53 04 74 61 5* 5 o 2 O O 8 in 48 38 66 4 2 33 28 136-1 235-1 135-6 236-1 237-1 4-15-0 + '4-4 + 13-9 4-14-0 + '4'4 + '4-' + '3'4 -707 -58-3 1 M eans 8l 413 349-18 4-18-62 -326 19-8 - 4'5 + 8-2 , Group 409. A pair of spots. Only one small faint -p"t i. mains on January 9. 25-175 \f Bans i 54 *35'57 +4''7 ... Group 4loC. Sereral small spota in an irregular clnr*r. Jan. I7'26; 18-284 9-386 20-321 21-470 I I I 1 G 35 o 8 3 2OI 18 7 109 "7 '7 '9 '4 5 09 '5' 11 1 3507 35'3 350-2 350-6 348-1 -19-5 10-1 -.9-9 19-0 -184 + '77 + 45"' + 7'5 Jan. 20*321 I o 37 o 19 291-3 -16-5 - 4 M> ans ii "4 349-98 -19-38 o '9 291 3 -6-5 104 ARKAS AND HKLIOGHAPIIIC I'OSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. Date. QtMnwioh Civil Time. Where taken. 1'rojected Area of Area for Group. Mean Longi- tmle (if Group. Mean lati- tude of Group. Longi- Illiir Iroin (lent, ral Meridian. Date. Greenwich Civil Time. Where taken. Projected Area of Area for Group. Mean Longi- tude of Group. Mean Lati- tude of Group. Longi- tude from Central Meridian. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Group 410!). A pair of small spots on January 13. The group quickly expands into a line stream, of which the first and last spots aro the principal members. The leader becomes a larg* regular spot. Group 412 continued. 1881. Feb. 1-287 2 3-288 4' 2 77 I i i 229 No pho 6 9 934 tograph. 39' 215 '33 (109 85 105 547 449 35* 324 o 165-6 165-7 165-7 167-1 o -13-3 + 30-4 + 437) + 56-9 + 7''3 1881.,, Jan. 13'! 59 24-286 25-175 26-307 27-172 .8-175 29-190 30-193 I I I I I I I I 12 114 193 439 337 228 182 86 60 45 6 893 .315 1 1 56 9 1I 6 5 1 337 7 59 IOO 2 39 204 171 205 ,64 34 *37 463 724 706 694 7 2 5 639 o 231-9 232-8 234-0 2 34'3 235-9 237-6 39'9 238-6 -19-4 o ~ 2 3'5 7-8 -'3'3 -13-2 -12-5 19 i -18-6 -18-4 -18-1 -18-3 -18-1 -18-5 + 5"' + 20-4 + 33'4 + 4 8 '3 + 63-9 + 75'8 "7 418 165-77 -13-04 ... Group 413. A regular spot with 11 mall companion on January 30. 144 528 235-63 -18-56 Jan. 28 175 29*190 3''93 31-452 Feb. 1-287 2 3-288 4' 2 77 i i i G 1 * * I I 3 3' 35 21 2 4 No pho 12 9 22 log I 08 9 6 58 tograph, 2 5 *7 6 32 26 12 '3 ( l 5 4* 112 81 56 3i 22 '3 '5 113-2 114-3 114-8 116-2 II7-O 1I7-4 1177 II8-2 -16-6 f>. i -76-1 f.,-1 Group 4ioE. One or two small spoti. -17-0 -i 6-6 -16-6 -16-5 -16-4 -I 6-2 01 7 -48-0 30-0 f 0.- Jan. 24-286 *S - >75 26-307 27-172 I I I I o o o '3 72 60 22 22 o 8 9' 5 2 5 4 173-6 174-6 174-6 170-7 -25-1 -24-2 -24-2 -26-2 67-0 -54'3 -39'3 - 4-6) + 8-9 + 22-4 -31-8 Means '4 47 1 16- 10 16-50 2 43 173-38 ~ 2 4'93 Gr A sma '3 '5 12 rap 41 4. 1 faint spot. Group 4ioF. A stream of spots, mostly small. Jan. 29-190 3''93 31-452 I I G 4 o 3 O .6 '3 8 108-6 108-6 107-1 -16-4 -15-4 -'4'5 -67-4 -54-2 -39'' Jan. 26-307 27-172 28-175 I I I o < 9 67 .8 128 O 4' 47 '4 98 89 218-1 229-0 228-8 + '4'4 + '4'4 + 14-' + 14-2 + 26-5 + 39'S I 12 108-10 Moana 29 67 228-63 + 14-30 ... Means 1 5 43 Group 415. A fine stream of the usual type, the first and last spots being the largest and most stable. The leader spot alone remains by February 10. Group 411. A short compact stream of irregular spots. .Ian. 28-175 29-190 30-193 3'"45 2 Fob. 1-287 I J I G I 86 225 *55 77 >3 231 795 101 5 617 294 5 122 1 3 8 45 67 '33 43' 549 360 189 168-1 169-3 169-2 168-8 168-5 + 15-1 + '5'3 + 15-0 + 15-2 + '4'5 21-2 ;- 67 + 6-4 + 22-6 + 33-3 Jan. .; i ' 1 -i -'- Feb. 1-287 2 *<89 G I I I G I I I G G I 8 3' No pho 228 242 226 I 99 232 128 112 36 46 37 92 tograph. 933 1 191 1086 937 908 766 516 323 '55 21 4 (103 167 '5 1 129 I 12 '34 82 90 4' 7' 9 2 120 395 669 737 618 5 2 5 5*5 497 4'5 371 238 70-5 72-0 71-1 70-2 70-4 70-5 70-6 71-1 73-1 73-2 73'* 73' + 18-8 + >9'3 + 19-2 + 19-0 + 19-2 + '9'4 + '9'3 + 19-0 + 19-1 + 187 + 18-4 + 18-6 -757 -63-2 -50-9) ?8-6 84 33 2 168-78 + 15-0* 4' 2 77 5'4'9 -*5'4 I0'2 Group 412. Two clusters, each very compact, and composed of irregular spots. 6-168 7-273 8-328 9-446 - '3 + '47 + 30-6 + 45-4 + 59'9 + 67-4 Jan. 29-190 30-193 3"'4S 2 1 I G '23 406 222 301 1015 1083 64 205 "9 '55 S'5 58, 164-9 165-5 165-9 -13-0 in + 2 '7 + '97 10-546 11-125 -13-1 -12-9 . 95 434 71-58 + 19-00 TAKEN AT (!|(KKN\\ [CII. IN Isi'IA. AT M Kl.lu>n;\K. AM' IS M \riil Hi's, IN H|R YKAl PO 1881. 105 is mill Ui'linurajiliii' Positions of Croups nf Sun Spot Ihit.-. ^BMB* irh Where takrn. .-ti Area of . for Up. M,.,, Longi- tinli- nf Oroup. Mean Uti- tii.li- "f Oroup. LoiiKl- tu.l.- Irnin Oiural Meridian. lat.-. Oreeiiwuli 1'ivil Tun.. \VI,,T, takrn. Projected Are* of Area for Group. M.,,. iu.li- nf liroup. M..,, UM- i.i.i|. i,.,,,,, iij-i.- from Ontral Mrn.ll.h. I'ml.r.. W|,..li. Spot. Umbra. Whole Umhrm. Whole s,.,,. Umbr*. Whnl.- s,..,t. Group 41 ; A A pair of very mall |H)U. Group 419 oemWuwevf. 1881.,, Feb. 10-546 11-125 12-475 13-146 '4'34' '5 3'3 16-361 17-256 G I G I I 1 J T 100 148 9* H7 93 2 3 62 16 465 477 456 477 390 281 17* 77 i: s 59 7 63 *5 .6, 16$ 49 268 >47 21 1 "74 "3 353'S 353-9 353-4 353-6 354-4 353*5 353-3 3535 o 4-157 4-15-9 4-15-7 4-15-9 4-15-9 4-16-2 + 16-2 4-16-0 + 15-9* -19-8 -11-7 4- 5-5 4-14-5 4-31-1 4-43-0 4-56-6 4-68-5 ' ,i Fell. I 5 *9 3 ,6 II 1-0 o -J-J o 4- * 3 16 1 1 1-0 -S'3 ... Group 416. A 1111*11 faint |>"t on Prlmiiiry 5. The group rapidly increases in size after i4ry 6. ^1 ' ih ; 6$ 256 354-00 ... 1 [ Fl>. 5-491 6'i68 7-Z73 I 1 1 7 9 124 53 22 '5 283 65 5 7 '39 118 '5 11 318 389 111-9 114-3 114-7 1167 4-11-7 4-H-4 4-H-5 4-21-7 4-3*-* 4-43-4 4-58-3 4-74' Group 420. A close |ir of small faint s|x>U. Feb. 9-446 G 14 11 339-3 4-17-9 -4-5 Means ... ... 70 '84 114-6; 4-ii'S 8 ... A few |u, i Urgent HI Feb. 6-168 r7j 8-328 9-446 10-546 11-125 iz'47? 13 146 Group 417. neatly small ami unstable, in an irregular str id nioet stable. saiu. The leader spot is the o 12 339'3 4-17-9 Group 411. A small faint spot. I I I G : 1 G I SI 61 '7 '7 41 *7 12 *9 202 128 '35 56 '33 98 47 8 3 34 10 1 1 *9 16 16 18 H5 7i % I 61 4*'3 4*'9 44'4 4*'3 43'9 H 2 4 i6 43-i 4-18-0 4-17-9 4-18-3 4-I/-5 + 17-9 4-18-2 4-18-0 4-18-8 -28-6 -13-5 4- 1-9 4-14-5 4-30-6 4-38-6 4-547 4-64-0 Feb. 9-446 G 7 9 319-6 - 19-8 -68-2 o 9 319-6 -19-8 ... Group 422. Two small spots. Only one of them is SMD on February i j. 22 71 43-11 4-18-08 Fell, n'475 13-146 I4-34' G I I 12 *4 10 61 38 56 '3 " 5 35 10 *9 3* ''9 313-0 311 5 20-3 -19-3 20-2 26-0 -16-1 - i-x Croup 418. A few very small faint spots. Only the leader remain* on February 1 1. to 28 322-13 -19-93 ... rVI, 9-446 10-546 11-125 i*'475 G G 1 G 1 1 16 3* 1 1 3 39 9* to 6 10 21 10 '7 8 IS 33-0 35-0 36-8 371 4-20-7 4-20-8 410-8 421-0 4- 5-1 4-21-7 +JI1 4-49-4 (Iroup 423. A large regular spot. 12 3 35-53 4-20-83 Feb. 14-341 15-313 16-361 irs< IK'2^3 19-261 20-270 21-409 22-097 23-167 I M.- I 10 3' 3' 3 II 53 5 31 47 47 93 140 166 129 248 186 102 15* '55 *4 4* 18 2K 33 *7 30 *9 '9 33 111 127 i*7 122 '43 '44 '5 118 93 no 148-7 246-4 146-3 '459 *45'4 244-8 244-6 244-8 *43'9 *437 4-197 -74' 6 4-20-0 64-1 4-20-0 -;;04 4-20-1 -101 419-9 -*''' 4-10-0 -137 4-20-2 0-6 + 20-4 414-5 4-20-3 +i*7 4-i9'8 4 Croup 419. A large rngular spot, with a mnall rumpanioii on February t. \ r,-i 68 K-328 9'446 I I I K 9 1 90 14* !' 461 415 77 too 76 59 346 169 382 *7' 355-0 355-3 354-5 354'" 4-16-2 415-8 4-15-8 -75'9 -61-1 480 -337 I.xiKAI'HIC 1-7 1 - 106 AREAS AND HELIOGRAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots wntinued. Date. Greenwich Civil Time. Where taken. Projected Area of Area for Group. Mean Longi- tude of Group. Mean Lati- tude of Group. Longi- tude from Central Meridian. Date. Greenwich Civil Time. Where taken. Projected Area for Area of Group. Mean Longi- tude of Group. Mean Lati- tude of Group. Longi- tude from Central Meridian, Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Group. 42 3 continued. Group 425 continued. i88i. d ?eb. 24^316 25-423 26-512 I I G 31 32 2 137 107 12 2 9 46 7 130 '55 5 244-1 243-0 243+ o +20-3 + 20-0 + 20-2 o + 5*'2 + 65-7 + 80'3 i88i. d Feb. 22-097 23-167 24-316 25-423 26-512 27-107 Me I I I G I o 7' 56 4 2 '4 12 264 "77 103 109 40 3' o 36 29 24 10 10 '45 9i 1! 28 26 198-8 198-2 201-3 205-9 207-3 208-9 o -16-1 i 6-0 -15-9 -15-6 -15-4 -15-2 -22-4 - 8-8 + 9'4 + 28-6 + 44'3 + 53-8 29 119 245-0 + 20-07 ... Group 424. A large regular spot Means 22 74 201-89 ~'5"93 Group 426. A regular spot, with a small companion on February 23. Feb. 14-341 I5-3I3 16-361 17-256 18-253 19-261 20-270 21-409 22-097 23-167 24-316 25-423 26-512 27-107 I I I I I I I I Me I I I G I 25 68 55 72 124 124 1 08 "5 76 140 53 59 3 1 16 77 218 264 39 467 529 498 501 43 526 406 219 "3 72 7 92 49 5 74 67 I 6 60 4' 75 39 61 59 47 220 2 94 234 273 278 286 2 5 8 26l 218 283 301 226 214 217 242-3 241*2 241-2 241-1 2407 240-4 240-2 240-3 239-6 239-5 239-2 239-1 239-2 2377 2O'l -19-8 -19-8 -19-9 20-4 -20-3 -20-3 -20-5 -20-4 20-8 20-4 81-0 -69-3 -55'S -43-9 -3i-i -18-1 - 5-0 + 7- + 18-4 + 32-5 +47'3 J-^ii-R Feb. 20-270 2 1 -409 22-097 23-167 24-316 25-423 26-512 27-107 I I Me I I I G I 22 37 o 47 47 37 i7 "9 I 10 109 75 144 125 '34 37 24 31 32 O 28 25 >9 9 10 '53 94 55 86 66 68 '9 '3 175-1 175-1 I74-3 174-6 174-6 175-2 174-6 174-6 -14-1 -14-4 14-6 -14-7 -15-2 -15-3 -I5-4 -15-4 -70-1 -55'2 -46-9 -32-4 -17-3 - 1-9 + ii-6 + I9-5 -20-3 -20-3 + 76-1 + 82-6 Means 19 69 17476 -14-89 Means ... 60 255 240-12 20-28 Group 4263. A cluster of small spots. Group 424.1. A few unstable spots in a short irregular stream. Feb. 21-409 22-097 23-167 I Me I 25 3 85 89 29 H 2 48 49 17 22I'O 220-8 221-6 + 18-0 + 18-2 + 16-9 - 9'3 - 0-4 + 14-6 Feb. 16-361 17-256 18-253 19-261 I I I I 34 75 59 9 1 06 H7 125 34 22 59 61 16 70 116 '33 67 336-5 335-5 336-5 335-4 20-5 20'6 + 39-8 + 5"5 + 647 + 76-9 Means 5 38 22IM3 + 17-70 -20-7 Group 427. A regular spot, with several small faint attendants. Means 4 97 335-9 8 20-63 Feb. 24-316 25-423 26-512 27-107 28-212 Mar. 1-283 I I G I I I 28 12 21 22 O 22 63 44 73 44 54 56 67 15 18 16 o 13 150 53 62 32 34 33 II7-8 II7-2 1 1 6-6 117-1 116-1 115-5 + 21-9 + 22'0 + 21-9 + 21-7 + 22'9 + 23-3 -74-1 60- 1 -46-4 38-0 Group 4246. A few small spots in a sparse stream. Feb. 18-253 j 25 47 '4 26 282-8 + 16-2 + II-0 24-6 II'O '4 26 282-8 + 16-2 ... Means Means 22 61 116-72 + 22-28 Group 425. A number of spots, mostly small, in a straight stream. Group 427A. A spot only seen close to the West limb. Feb. 19-261 20-270 21-409 I I I 6 16 117 22 49 342 6 1 1 69 21 3 6 203 1987 199-1 198-8 -.6-7 16-4 -16-1 -59-8 -46-1 -34'5 Feb. 27-107 I 9 3i I I 37 216-9 + '57 + 61-8 I I 37 216-9 + 157 TAKEN AT (rKKKNWiril. IN IxiHA, AT MKUIOURNK. ASH IN MAUH1T1I S, IN TIIK VKAR8 1878 TO 1881. 107 ALMS :nnl I l.-li. .graphic 1'nsitinns of Groups i>{ Sun Spots ruup. Mm Uii- tudeof Qroup. Long!- Mi from Central Meridian Umbra. Whole Spot. Umbra. Whole {pel Umbra. Whole Spot Umbr, * (iroup 4276. A number of very small >|>oti in. a short atrea-n. Group 431 nrnlimted. lflfl.4 Mar. 11-496 '2'395 13-164 '4'4 6 4 15-516 16-430 17-465 '8-544 19-548 G I I G G G G G G u 52 5* *7 *9 '4 o *'S 'SS *5' 3'7 S5 'S3 9* 34 3 s 35 38 '4 28 16 '9 12 148 9' 37 16$ 84 87 61 3 5 310-2 3"'3 3"7 312-1 316-8 312-0 313-6 314-6 318-1 -21-2 in 21-2 -11-6 -,o-4 -11-6 -10-3 -10-5 19-0 O - 4 ,-| -18-8 -18-2 0-6 + 17-8 + 25-0 + 4'3 + 55-5 + 72-3 1881.,, Feb. 27-107 I 6 57 4 36 o 185-3 o +17-1 O + 30-2 4 36 185-3 + 17-2 Group 428. A regular jpot. liar. 3*271 4-184 5-278 6-190 7'jio 8-418 9-284 10-284 I 1 I I G G I I .6 *4 47 3* 4 11 10 12 4' 59 "* 126 53 4 '9 22 10 22 33 20 S 6 8 S* 54 88 78 3 7 ii 4 38-0 38-1 377 37'9 37-2 367 36 ; 4 36-2 + 10*4 + 2OM + 20-2 + 20-5 + 10*4 + 20-6 + 20-4 +20-4 -62-4 -50-2 -36-1 -24-0 - 7'3 + V* + '5'3 + 28-3 24 115 312-44 -10-95 Group 431. A small faint spot. ilar. 9*284 10-284 11-496 I I G 5 '3 o 18 22 '4 3 8 10 "4 12 H i 45-6 47'* -18-7 -18-6 -18-5 + 23-4 + 377 + 55* NI I'-ill 1 - 1 16 44 37-18 +20-38 ... Group 429. A small faint spot. Means 4 11 4577 -18-60 ... Group 433. A number of spots in a straight stream, inclined at a considerable angle to the equator. As with groups 430 and 431, and other groups of this usual type, the leading spot is the largest, the last spot the next in size, and the smaller spot* which lie between these gradually diminish in size and disappear. The last spot also diminishes, but less rapidly than the smaller spots. IMar. 7-5 10 1 8 '4' 8 G G o o 3 9 6 9 329-9 33'7 -17-9 -i 8-0 -74-6 -60-8 Means o 8 330-80 -'7-95 ... Group 430. A number of small faint spots in a straight stream. Mar. 9-284 I I G I I G G G G 3' '47 '77 227 198 '33 83 47 20 I6 4 686 869 826 770 624 443 209 95 *4 99 105 '3' "5 86 65 5 37 35 457 5'7 473 448 404 348 122 79 336-8 338-1 337-6 339' 1 338-4 342-3 341-2 343'2 343-8 + 22-6 + 21-7 + 21-9 + 21-6 + *i-7 + 21-4 + 11-2 + 20-8 + 20-7 -44'3 -29-8 ~'4 - 4 i-o + 8-5 + 29-5 + 42-2 + 56-2 + 70-5 i Mar. 8-418 9-284 10-284 11-496 12-395 13-164 14-464 15-516 16-430 G I 1 G 1 I G G G o o 7' 46 61 10 3* 7 36 112 233 79 '47 208 5* '4* 43 o 7* 33 33 36 n 18 4 "3 '97 *4' '3' 9' 120 28 7 l 26 313-8 310-3 309-1 310-4 311-8 309-6 313-2 311-5 311-0 + 13-8 + 15-0 + '4'5 + 14-6 + '4'3 + '4'5 + '3'7 + 14-6 + 15-2 -78-7 70-8 -58-8 -41-6 -28-3 -20-3 + 0-4 + '2'5 + 14-0 11-496 12-395 13-164 14-464 15-516 16-430 ,7-465 79 354 34>-o6 +21-51 23 114 311-19 + '4'47 Group 434. A small spot, not seen on March 11 ami 13. Group 431. A number of small spots in a straight stream. The group fluctuates considerably in size until reaching the central meridian, after wUeB it rapidly diminishes, and has nearly disappeared before reaching the West limb. Mar. 1 1 -496 12-395 G I I G o o o o 9 o '4 o o 22 O 10 277-1 *777 -T-lS'O + '7'9 -74-9 -35 ' liar. 8-418 9-28., 10-28.1 G . I I o 78 33 '54 163 o 102 108 228 234 309-1 309-6 310*1 -21-5 -83-4 -7i-5 -57-8 13-164 14-464 21-4 21-6 8 277-40 + '7'95 108 AREAS AND HELIOGRAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. Date. Greenwich Civil Time. Where taken. Projected Area of Area for Group. Mean Longi- tude of Group. Mean Lati- tude of Group. Longi- tude from Central Meridian Date. Greenwich Civil Time. Where taken. . i Projected Area of Area for Group. Mean Longi- tude of Group. Mean Lati- tude of Group. Longi- tude from Central Meridian Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Group 435. A large regular spot, followed by a number of small spots at a considerable distance. Group 439. Two spots on March 19. The group rapidly increases in size, and forms on March 22 a very large double spot. The great spot has broken up by March 25, to form a compact cluster. I88i. d Mar. 12-395 13-164 14-464 15-516 16-430 17-465 18-544 I I G G G G G 11 1 103 108 'I 76 33 28 2/7 642 614 435 335 199 1 1 1 58 53 58 42 55 32 49 44 329 329 262 239 '93 192 o 328-9 328-3 330-4 331-7 332-1 333-0 333-5 -17-2 -17-9 -18-4 -18-3 -18-7 -18-8 -19-2 o I 1-2 - 1-6 + I 7 -6 + 32-7 + 45'I + 597 + 74-4 i88i. d Mar. 19-548 20-223 21-303 22-643 23-I75 24-286 25-405 26-055 27-251 G I I G I I G Me I 78 277 283 34' 283 240 "7 32 32 272 1051 1413 1608 '337 954 652 274 80 45 152 '53 '95 170 172 1 08 37 76 '57 577 762 919 804 675 608 343 191 o 2247 226-0 224-9 224-1 223-9 223-4 222-6 223-6 220-3 !+'4'i + 14-2 + 14-2 + 14-4 + 14-3 +14-2 + 14-0 + 14-0 +127 2I'I IO'9 + 2-2 + I9-I + 26-0 + 40M + 54-0 + 63-6 + 7 6-I Means . . 50 241 331-13 -18-36 ... Group 436. A compact cluster, composed of a number of small spots. The group opens out, and the leading spot increases in size, whilst the following spots diminish. Means 123 560 22372 + 14-01 Group 440. A spot seen only close to the East limb. Mar. 12-395 13-164 14-464 15-516 16-430 17-465 18-544 19-548 20-223 21-303 22-643 23 - i75 I I G G G G G G I I G I 45 75 182 268 277 217 173 107 98 97 35 16 55 536 945 "393 1128 1217 1026 753 438 347 '37 53 56 1 1 1 146 142 I 12 f 65 75 122 59 28 188 409 582 761 579 627 567 452 338 424 227 265-1 263-1 263-6 262-3 265-3 2667 267-9 268-8 269-7 272-5 271-8 271-9 -15-8 16-4 -16-8 -i 6-4 16-4 -16-3 -75'o -66-8 -49-2 -367 -217 - 6-6 + 8-8 + 23-0 _i- Mar. 19-548 G o 18 o 45 1647 -28-2 8ri -16-2 -16-5 16-2 45 1647 -28-2 16-1 +49-8 16-3 +66-8 16-2 +74-0 Group 44oA. A small spot. Means 86 432 267-39 16-30 ... Mar. 20-223 I 9 16 10 i7 290-2 290-2 + 28-8 + 53-3 Group 437. A large regular spot which breaks up to form a compact cluster of small sp ots. 10 '7 + 28-8 Mar. 13-164 14-464 15-516 16-430 17-465 18-544 I9-548 20-223 21-303 I G G G G G G I I 16 34 2 9 61 40 27 1 1 32 6 84 1 80 296 231 266 170 82 119 3' 32 33 36 37 22 '4 6 18 4 172 176 218 141 146 89 .44 67 20 255-9 255-7 255-1 256-1 256-2 256-7 257-2 257-7 258-2 + 10-5 + 10-2 4-IO-4 + 10-2 + IO-I -r-io-o + I0'0 + 9'8 + 9-3 -74-0 -57-1 -43-9 -30-9 17-1 - 2-4 + 11-4 + 20-8 +35-5 Group 4406. A small spot. Mar. 21-303 I 32 23 175-6 -14-0 -47-1 Means ... 23 I75-6 14-0 ... ., 22 "9 256-53 +10-06 " " * Group 441. Two small spots close together. Group 438. A small faint spot. Mar. 1 8- 544 1 G 9 24 5 i '4 284-2 + 9'6 + 25-1 Mar. 22-643 G 12 47 8 3i 166-9 + 7-3 - 3 8-I Means ... 5 .. '4 284-2 + 9'6 ... 8 3' 166-9 + 7'3 ... TAKEN AT < ', RKF.N WK'H, IS INDIA, AT MELBOURNE, AM> IN XI AUIJITIL'S. IS THE YKAKB 18?8 TO 1881. 109 Areas aixl Heliograph!)' Positions of Groups of Sun Spots continued. ii 'Mi-li Time. Where tk.-n. I'roji-cted Area of Area for Oroup. Mean longi- tude of Oroup. Mean Lati- tude of Group. Longi- t in If frum Central Meridian Date. Greenwich Ciril Time. When- taken. Projected Ana of Area for Group. Mean \< "Hi tud of Uronp. M..,, Lati- tude of Oroup. Longi tude from '.-ntr.1 Umbra. Whole Spot Umbn. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot < i roup 44 1 *. Several very small spot* in atragxling stream. Group 445 continued. 1881. ,, Apr. 4-584 5-285 6-509 G I G II 9 44 XI 45 *74 '3' 95 43 39 3" 271 248 8ro 82-} 84-6 O -31-6 +467 -30-7 +57-4 -29-6 +757 1881. . : 3 M 75 24-286 25-405 26-055 1 I G Me 3* 38 '9 94 200 78 44 '9 21 10 56 io 9 4" *4 o 171-1 170-8 168-0 170-1 o + 12-3 + '37 + 13-6 -'3'5 -16-8 -12-5 - 0-6 + IO'I Means S *7S 81-57 -31-87 ... '3 58 170-0 + 13-28 ... Group 446. A small faint spot Group 442. A mnall spot, which iliviilrs into two, become* fainter and gradually fades away. Apr. i '408 G '3 o ii 130-0 -25-0 + 53- Mar. 28-457 29-516 3 -4 ic 31-464 Apr. i -408 G G G G G 9 9 o o o 'S H 7 '3 4> 8 6 o o o '4 17 4* 7 21 70-6 71-1 71-1 72-6 7*'4 19-0 -19-1 -19-2 -19-5 -.9-5 -577 -43-2 -3''S -16-1 - 3-8 Means o 1 1 1 30-0 -15-0 ... Group 447. A small faint spot Apr. I -408 2-519 G G o 2 16 6 o 2 ] 6-0 6-7 + 15-0 + 15-1 3 2O 71-56 19-26 ... 70-1 -54-8 Group 443. A spot which breaks up into several faint spots and gradually fades away. I 7 6-35 + 15-05 Group 448. A small regular spot, rapidly diminishing in site. Mar. 28-457 29-516 30-410 31-464 G G G G 7 20 9 5> 121 88 44 s 16 6 o 55 95 5 2 26 70*0 69-2 69-0 68-7 + 17-3 + '77 + 187 + 19-1 -58-3 -4S-< -33-6 20-0 Apr. I -408 2-519 3'*S4 4-584 5-285 G G I G I 11 17 12 ;i i 8 87 80 4* *5 *3 18 10 9 9 95 I 1 6 I 26 14 359'4 359-8 o-i o-o 359'9 -21-5 20-9 -20-5 -'97 -'97 -76-8 -6l 7 -5'7 -34'3 -25-1 Means 8 59 69-23 + 18-20 Group 444. A Tery small faint spot. Means '4 58 359-84 20-46 ... Group 449. Three rery small spots close together. Mar. 29-516 G 2 , 7 171-0 I+I4-6 + 567 KMIU ... 2 7 171-0 +14-6 Apr. 2-519 G 3* 21 96-3 + 16-8 + 34'8 Two small a separate, them, i the folloi Mar. 31-464 Apr. i -408 2 519 V*54 >oU whic increaaii ts usual ring spot G 'I G I h are ne ig in MZI- in siHjt.s s diminifl 64 86 1 13 118 Gr ar toget at the si uf the tj h. 240 601 573 4*4 oup 445. ler when they fir ime time, whilst s ]>e, the preceding 36 137 48 339 6 7 339 75 268 st break o mailer spo spot lucre 80-7 8 i-o 80-5 80-8 ut, but gi ts appear ases in size -33 3 -3*7 adually Between , whilit - 8-0 + 4'8 + 19-0 + 29-0 o 21 96-3 + 16-8 ... (Iroup 450. A small spot Apr. 4-584 5-285 6-509 7-4*5 G I G G 48 10 in "4 7 '7 o *7 7 I 9 65 51 16 50-9 51-1 54' 53'9 -176 -18-0 -17-6 -18-3 + 16-6 + 26-1 + 45'* + 57-' -32-6 Means . 9 48 52 50 -17-88 no AREAS AND HELIOGRAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. Date. Greenwich Civil Time. Where taken. Projected Area of Area for Group. Mean Longi- Mean Lati- tude of Group. Longi- tude from Central Group. Date. Greenwich Civil Time. Where taken. Projected Area of Area for Group. Mean Longi- tude of Group. Mean Lati- tude of Group. Longi- tude from Central Meridian. Umbra. Whole Spot. Umbra. Whole Spot. tude of Group. Umbra. Whole Spot. Umbra. Whole Spot. Group 451. A regular spot. Group 454 continued. I I G I I I I G I o o o 3 o O o o it 32 o o o 4 O o o o 28 81 o 276-7 276-1 + 26-2 + 25-9 +66-3 +74'8 l88i. d Apr. 3-254 4-584. 5-285 6-509 7'4 2 5 8-513 9-512 10*222 II-309 I2-230 I3-4II I G I G G G G I 1 I G ,6 9 32 28 33 9 32 '! 20 7 o 44 117 1 1 1 142 102 99 98 54 44 22 25 21 17 27 '9 20 ii 18 ii 17 5 IOO 126 95 I 62 57 56 3 2 29 7 26 o 338-3 337'3 337^ 336-4 3357 335-3 335-' . 334'9 334'3 333-9 333-i + 21-2 + 21'4 + 217 + 21-8 + 22-2 + 22-2 + 22-3 + 22-4 + 22-8 + 227 + 23-1 -73-5 -57-0 -47-5 -32-5 2I-I - 7"' + 5'9 + 15-0 + 28-8 +40-5 H-55'3 i88i. d Apr. 11-309 12-230 13-411 14-228 15-172 16-198 17-199 18-513 19-200 Means '3 275-80 + 26-33 ... Means '5 63 335-62 + 22-I6 ... Group 4 54 A. A small spot. Group 452. Two small spots which gradually separate from each other. Two other smaller spots appear between them on April 9. Apr. 11-309 12-230 I I o 4 22 17 o 2 13 9 274-9 276-1 2O'I -19-2 30-6 -i7'3 Apr. 6-509 7'425 8-5I3 9-512 10-222 G G G G I 9 o ii 27 o 30 55 57 82 '5 IS 8 17 5' 55 42 52 9 295-I 296-6 297-0 295-0 293-5 -23-3 -237 -23-3 -22-9 -227 -73-8 60-2 -45'4 Means I ii 275-50 -19-65 ... J't * -26-4 Group 455. A group of spots measured in two clusters. Means 8 42 295-44 23-18 ... Group 453. A large regular spot. Apr. 12-230 3-4" 14-228 15-172 16-198 17-199 8'5'3 19-200 20-285 I G I I I I G I I 13 32 57 49 45 3i 45 74 219 231 403 348 ,84 137 95 8 22 34 i7 33 3 2 4<> 35 28 40 116 124 231 222 I6 7 '55 I 9 4 261-5 263-9 263-2 264-8 264-6 263-2 265-9 264-5 263-5 -247 -24-0 -24-0 -23-5 -23-3 -22- 9 -227 -22-6 -23-2 -31-9 -i3'9 - 37 + 10-3 + 23-6 + 35'5 + 55-5 + 63-2 + 76-5 Apr. 7-425 8-513 9-512 10-222 II-309 I2-23O I3-4II I4-228 I5-I72 16-198 I7-I99 18-513 I9-200 G G G I I I G I I I I G I 34 4' 45 48 68 72 76 5 48 80 38 26 76 ,48 310 240 267 370 355 319 289 272 219 186 90 5 2 38 34 29 37 37 39 27 28 55 38 35 401 224 290 182 162 202 182 I6 3 53 1 60 150 184 123 270-5 270-9 271-2 271-2 271-6 271-5 271-1 271-1 271-5 271-5 270-8 2707 270-6 -,|-9 16-0 -'5'3 -15-2 -15-0 -14-8 -14-7 -86-3 -7i-5 -58-0 -487 -33-9 -21-9 - 6-7 + 4'2 + 17-0 H-30'5 +43'i + 60-3 +69-3 H 3 -14-1 -14-0 -137 -'3-4 -13-5 Means 25 142 263-90 - 2 3'43 Group 456. A cluster of small spots. Means 35 198 271-09 14-61 ... Group 454. One or two small spots. The group is not ssen from April 10 to April 17. Apr. 12*230 13-411 14-228 15-172 16-198 1 G I I I 18 20 23 16 10 87 107 52 32 19 16 15 9 18 9 86 34 18 22O'5 219-2 218-4 219-2 219-9 + 13-1 + I3-4 + 13-8 + 14-0 + 14-2 -72-9 -58-6 -48-5 -35'3 ZI'I Apr. 8-513 9-512 IO'222 G G I o o o '7 19 o o o 3' '9 273-5 276-9 + 26-6 + 26-6 -68-9 5 2 3 Means 12 49 219-44 + 1370 TAKEN AT GltHNWini, IN INI'IA, AT MlLBOURNK, ANI> IN MAURITIUS, IN T1IK YRARB 1878 TO 1881. Ill Arras and l{(>liop-u]>hir Positions of Groups of Sun Spots euntinutd. IViv. Greenwich Civil Tin,,-. Where taken. Projected Area of Arra for up. He/n Long! tll.lr of Group. MM Lati- tude of Group. Longi- tiule from Central Meridian Date. Greenwich Cifil Time. A numb Where taken. er of sms Projected Area of Ana for Group. Mean I....,*- tll.lr ..( Group. Mean Lati- tude of Group. Longi- tude h..m Outral Meridian Umbra. Whole S--.I. ** ,':,;': Umbra. Whole Spot Umbra. Whole Spot. < ; roup 457- A Urge i|K>t forniiiiK suddenly. Group 460. 11 unstable spots. The group undergoes continual changes. 1"-,. Apr. 1 5-172 16.98 17-199 I!. I I I G 77 48 3* o 5 '94 in '4 48 38 38 o 156 I$J '3* 59 o 290-0 191*6 292-9 295-2 -'7'5 -17-3 -'77 18-0 + 35-5 + 50-6 + 65-1 + 84-8 1881. d Apr. 18-513 19-100 20-285 21-227 22-203 *3'43* *4' *5'*54 16-555 17-293 G I I I I G i G I 21 3* 3* 3 107 150 No pho 10 43 7 71 71 '*7 4 01 602 694 tograph. 264 127 I8 7 16 21 < 9 60 55 80 (45 10 4' 8 56 48 75 z '3 311 37' 171 '74 z '4 141 '59'9 159-9 156-4 '59'4 i6o-j 161-3 i6ri 160-9 161-9 162-0 -16-8 16-9 ~'7'4 -17-1 -'77 -17-1 -17-1 -50-5 -4'-4 30-6 -15-1 Means 3' "5 292-43 -17-63 + '5'9 + 27-8) + 39-6 + 57'8 + 677 Group 4 57 A. Two spots/, Group 457. -17-1 -16-8 -16-5 Means 36 198 160-33 -17-09 ... Apr. 17-199 I 64 '93 48 '44 274-8 -18-5 +47-1 Group 461. A large regular spot on April 1 8. A stream ot small spots form behind it on the succeed- ing days, the rear spot finally becoming nearly as large as the leader. ri8 48 '44 274-8 -18-5 1 Iroup 458. A clunter of several small spot*, not seen on April 19 at d 10. Apr. 18-513 19-200 20*285 21-227 22-203 *3'43* H' *5'*54 * 6 '555 27-293 28-399 29-307 G I I I I G I G 1 G I '3 7* 142 109 122 120 No pho 89 III 4 49 116 *s 61 1 479 345 49 tograph. 4 I 567 386 35* ?9 % I 6 4 61 (58 54 89 in 90 o 136 158 408 *74 181 *1 4 264 *74 449 45 617 160 146-7 146-1 147-6 147-0 1509 151-4 151-8 154-1 '53'5 '54'9 151-4 146-5 + 7'3 + 7-8 + 7-o + 7-8 + 7'6 + 7-8 + 7-4 + 7'0 + 7'i + 7-o + 6-8 + 8-0 -63-7 -55-1 -39'4 -27-6 -107 + 6-0 + '9'4) + 3*- +49'4 4-60-6 +71-6 + 787 Apr. 18-513 19-200 20-285 21-2:- 22-203 432 G 1 I I I G o o o 13 61 3 3' o 39 182 44 o 17 o o O 10 29 61 280 5 82 120-7 * 221-4 2:ri 22O-3 -23-1 -12-8 -22-6 -23-2 + 10-3 + 46-8 + 59'5 + 74'9 (Means 13 68 220-88 -12-93 Group 458*. A rery small spot/, Group 45!. Means . . 65 307 150-33 + 7-38 ... Group 462. A small spot. F' Apr. 18-513 G o 8 o 4 213-1 -21-7 4- 2-8 Mt>;tn ... ... 4 2I3-1 ... Apr. 18-513 19-200 20-285 G o I I 6 3 *3 8 ,\ 141-5 143-1 141-5 -67-9 -58-1 -44'5 Group 459. 9 10-1 -12-7 Two spoU with eereral smaller attendants. The group rapidly increases in size up to April 10, and then diminishes again as quickly. o 9 '4*73 10-63 r. 18-513 19-200 20-285 21-227 22-203 *3'43* G I I I I G 47 101 222 64 '7 7 '34 337 60 1 3" 170 33 3 60 3 36 10 5 is 198 336 181 101 4 I82-2 1827 183-2 183-4 I82-8 185-0 + 20-8 + 2O-2 + 20-6 + 20-0 + 20-O + I 9 -9 -28-2 -i 8-6 - 3-8 + B-8 -fin + 39-6 (iroup 462. \. A short stream of small spots, ./., Group 460. Apr. 21-217 I 16 116 9 6> 148-9 10-2 -*57 Means ... 44 '54 I83-22 + 20-25 ... 9 65 1+8-9 10-2 112 AREAS AND HELIOGRAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. Date. Greenwich Civil Time. Where taken. Projected Area of Area for Group. Mean Longi- tude of Group. Mean Lati- tude of Group. Longi- tude from Central Meridian. Date. Greenwich Civil Time. Where taken. Projected Area of Area for Group. Mean Longi- tude of Group. Mean Lati- tude of Group. Longi- tude from Central Meridiau ~ IS 6 Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Group 463. A small spot. Group 467. A regular spot. l88l. d Apr. 18-513 19-200 G I O 6 '3 16 o 9 3P 23 o 131-2 131-5 -26-6 26-2 -79-2 -69-8 1881.,, May 3-398 4-256 5-546 6-402 7-394 8-207 9-483 G G G G G G G O 26 27 *7 17 20 '7 21 66 '3 140 122 9 8 58 37 23 '9 10 1 1 9 60 94 97 97 73 55 3' 293-2 293-0 292-9 2931 293-2 292-9 293-1 -23-5 -23-2 -23-0 -23-0 -22-8 -8c- 5 -69-4 52*4. Means 5 27 "31-35 26-4 ... -40-7 -277 Group 464. A small spot on April 20. A second is seen near it on April zi. -23-0 -227 -17-2 0'2 Means 16 72 293-09 -23-03 Apr. 20-285 I 21-227 I 10 o 61 26 5 o 31 13 185-3 183-4 -14-9 -15-4 - 17 + 8-8 Group 468. Two very small spots. 3 22 184-35 -15-15 May 5-546 G 3 16 2 u 27-4 1 1-8 + 42-1 Group 465. Two large spots seen only near the West limb. The preceding spot of the two is no longer seen on April 26. 2 1 1 27-4 -11-8 Group 469. Several very small spots arranged in two compact little clusters. The preceding cluster has disappeared before May 9, and the spots of the other cluster coalesce. Apr. 25-254 26-555 I G 42 333 86 4* o 336 149 177-2 '74-i + 20-3 + 20-9 + 55'9 + 70-0 Means 21 243 175-65 + 20-60 May 5-546 6-402 7-394 8-207 9-483 10-321 u'435 G G G G G I G i? o 3 22 O O o 70 5i 22 83 4 29 21 9 2 15 O 37 28 13 57 36 35 53 348-8 349'4 347-1 349' 1 348-3 346-8 34 6 '5 22'2 -21-4 + 3'5 + 15-4 + 26-2 + 39' + 55' + 6 4'7 + 79-1 Group 465*. Two small spots. -22-3 -21-4 -21-4 -2I- 9 -22-4 Apr. 26-555 G 9 48 5 26 111-4 + 15-5 + 7-3 Means 4 37 348-00 -21-86 Means 5 26 111-4 + '5'5 Group 470. Three small faint spots. The group is not seen on May 6. Group 466. A small spot. May 5-546 6-402 7-394 8-207 9-483 10-321 G G G G G I o 7 16 26 32 20 43 H3 168 75 o o 4 IO '9 29 1 1 25 70 126 67 335-3 335-4 335-1 333-5 332-0 .+ 24-4 ! I0'0 +24-5 +14-5 + 24-3 +25-0 + 24-9 +40-2 + 2 4'7 +49-9 Apr. 30-420 May i -242 2-262 G I I IO 7 26 42 49 12 6 o 30 36 34 352-1 352-8 352-3 + 21-4 + 2I-I + 21'9 61-0 -49-4 -36-4 Means 6 33 352-4 + 21-47 10 5 334-26 + 24-56 ... Means Group 466 A. A spot, ./., Group 466. Group 47 1 . A regular spot, with two companions on May 9. May 1-242 I IO 43 IO 43 347-2 +24-5 -55-o May 5-546 6-402 7-394 G G G 8 28 '4 32 63 62 16 3' ii 61 7' 49 270-1 270-3 270-6 -137 I VQ. -75' 2 637 10 43 347-2 + 24-5 -IJ-8 -50-3 i TAKKN AT < JKEKN WK'II, IN lM>IA, AT MKLBOUKNK, ASM) IX MAURITIUS. IN THK YKAK- 1878 TO 1 113 is mill H(>liograj)hic Position* of (in nips of .Sun Sj its -{iiiitin in '! DM*. >ich Ciril Tiin. Whrre Uken. Projected An* of Area for Group. Mr.,, I,.,: K! - tadeTof Group. KM Uu- tu. !. of Gronp. Longi- tinli- from Meridian Date, i wich i 'ivil Tinii'. Where taken. Projected Area of Ana for Group. HM Longi- tude of Gronp. HM Uti- tod. of Group. I Kl- tu.i, from Central Meridian. Umbra. Whole S]...t. Umbra. Whole Spot Umbra, Whole Spot. Umbra, Wnolt Spot. Group 47 1 continued. Group 475. A umall apot, 11. , of the place of Group 47}. 1881. ., May 8-207 9'4 8 3 10-3*1 G G 1 7 3 48 'S3 7* ii '7 '4 3 88 38 O 170-3 167-9 268-7 -14-0 -39-8 -18-3 -25-4 -16-3 -13-4 1881.,, May 18-555 19-441 G G 5 5' '3 o 3 *9 8 o 186-4 187-0 + 22-1 + **'3 o + 13-* + *5'S Mwn '7 57 169-65 15-00 t '9 186-70 + 22-2O Group 472. FA regular spot followed by a ttream of small sjwts, of which the last is the largest. following a|its, however, hare all disappeared before May 15, leaving the leader alone. Tlie facula? connected with the group on May zo lorm a straggling Rroii|i of intricate sha|. Group 476. Two small spot*. Mav 10-321 I 11-435 G 12-487 G 13-403 G 14-47* G 15-163 16-266 1 1--200 I 18-555 G 19-441 G 10-431 G 21-417 ; '3 33 79 90 66 58 60 59 5 5 28 4 43 188 410 398 377 357 37' 261 237 212 ' 6 * 56 35 39 63 59 37 3' 3 3* 3i 37 28 7 "3 *35 333 260 *3 190 '93 142 48 157 164 98 204-0 202-5 203-9 104-5 105-5 207-0 207-1 207-2 207-0 207-0 207-0 207-9 + 12-5 + 13-8 + 13-5 +13-8 + 13-8 + >37 + 37 + 14-0 + 14-0 -r-H'4 + 14-6 + '4'5 -78-1 -64-9 May 19-441 G 8 22 8 21 115-8 + 24-8 -r-54'3 49 6 -36-9 -21-8 1 1-1 + 3'6 + 16-1 4-33-8 +45'5 -1-5 8-6 + 7*'5 1 11 115-8 + 24-8 Group 477. A scattered group composed of a Dumber of small unstable spots that undergo continual change*. kf6ai)S . . ... 36 187 205-88 + 13-86 May 19-441 20-431 21-417 22-191 23-563 24-386 G G G I G G '9 58 *3 20 *4 o 60 21 5 i>3 5 70 if II 37 i? '9 33 35 141 86 47 IO1 3* '74'3 I74'5 176-8 178-8 174-0 169-5 -30-7 -30-3 + 12-8 + 26-1 ++I-4 + 53-6 + 67-0 + 73H Oroup 47* A. A small spot, -30-1 -30-4 - 3 I-6 Mav 10 3*1 I 16 33 9 18 287-8 + 20-2 + 57 20 74 174-65 -30-55 Means 9 18 287-8 4-20-1 ... Group 478. A small faint spot. Group 473. A small spot. May 1 3-4-33 i; 5 10 S 10 184-0 + I8'5 -57'4 May 19-441 10-431 G G 2 O 9 10 i 6 176-6 176-3 + 21-0 + *'9 + 15"' + *7'9 .. 5 ' 184-0 + I8-5 6 176-45 + 20-95 Group 474. A S1U11 8]H)t. Group 479. A small spot Hay 13-403 I + -47* 15-163 16-266 G G I I 7 o 6 10 4 12 3 3* '4 o 6 28 12 *4 20 166-1 167-0 167-5 1 68-0 + 57 + 6-2 + 6-5 + 6-6 -75-3 60-3 50-6 -35'5 May 21-417 G 12 7 164*2 -16-3 + 18-8 Means 6 21 167-15 + 6-25 o 7 164-2 -16-3 ... PHOTO-HELIOCIUPHIC RESULTS, 1878-1881. 114 AREAS AND HELIOGRAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGHAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. Date. Greenwich Civil Time. Where taken. Projected Area of Area for Group. Mean Longi- tude of Group. Mean Lati- tude of Group. Longi- tude from Central Meridian. Date. Greenwich Civil Time. Where taken. Projected Area of Area for Group. Mean Longi- tude of Group. Muan Lati- tude of Group. Longi- tude from Central Meridian Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Group 480. Two spots. The following spot diminishes rapidly and has disappeared before May 25. Group 484. A small spot, with a very small companion on May 29. The principal spot has divided into two by May 30. I88l. d May 21-417 12-191 23-563 24-386 25-396 G I G G G 80 66 27 12 247 229 77 48 '4 48 43 25 -5 148 5- 69 57 35 o 158-0 158-3 159-3 159-1 161-1 o -27-1 -26-7 -25-5 -25-3 -24-6 o + 22-6 + 33'i + 52-3 + 63-0 + 78-4 I88l. d May 28-192 29-101 30-492 I I G o O 36 37 10 32 26 6 351-8 352-2 352-0 o -19-1 -18-8 19-0 -53-9 -4I-5 -23-3 Means 21 352-0 -18-97 Means 26 92 159-16 -25-84 Group 485. A very fine stream of spots, some of them of considerable size and the last ver f large. -767 -64-4 -52-4 -34'4 -23-3 - 9'5 + 3'5 + '77 + 3'9 + 40-3 + 6o"o Group 481. Two regular spots. A third spot is seen between them on May 25. The following spots disappear before May 30. May 27-284 28-192 29-101 30-492 31-396 June 1-418 2-404 3H38 4-401 5-094 6-540 I I I G G G G G G Me G 37 189 203 234 292 360 285 291 172 116 34 251 523 739 1247 '595 2148 1602 1315 881 454 98 82 224 173 ,46 162 186 146 I5S 102 77 34 546 611 616 77 885 I I 10 820 701 521 302 IOO 341-0 341-3 341-3 340-9 340-1 340-3 340-6 340-8 341-2 34 I- 5 342-0 -107 10-1 IO-2 -10-8 -10-5 IO-2 - 9'9 IK - 87 - 8-3 May 22-191 23-563 24-386 25-396 26-283 27-284 28*192 29*101 30-492 I G G G I I I I G 9 73 58 109 79 66 60 46 37 68 268 249 454 385 444 404 277 140 6 43 33 62 47 44 47 47 83 48 '57 141 258 230 296 3I J 276 3i8 88-1 89-1 90-3 90-4 907 90-4 90-0 90-1 91-3 28-0 -27-9 28-0 -27-9 -27-8 -27-7 -27-5 27-0 -26-8 -37-i -17-9 - 5-8 + 77 + '9'7 + 327 +44-3 + 56-4 + 76-0 '35 635 341-00 - 974 ... Means ... 46 226 90-04 27-62 ... Means Group 486. Two small spots. Group 482. A regular spot, followed by two small spots. These latter disappear, and the leader spot has broken up into several portions by May 30. May 31-396 G o 13 o 9 324-5 -257 -38-9 May 23-563 24-386 25-396 26-283 27-284 28-192 29-101 30-492 3'39 6 G G G I I I I G G 59 48 116 $ 6 3 39 46 21 '3 118 201 324 2 9 I 344 283 229 134 5 11 75 37 35 21 26 H 1 1 118 '55 208 167 188 152 128 90 42 49-8 49-5 49'4 50-9 49-1 49-2 50-5 52-5 52-7 + '9'5 + 19-6 + 19-8 + 2O-I + 20-5 + 2O'I + 20-O + 20-1 + 20'0 -57-2 :{..{. o 9 324-5 -257 -33'3 20-1 - 8-6 + 3'5 + 16-8 + 37-2 + 49' 1 Group 487. Two spots. Other smaller spots form around these, making two compact clusters. May 31-396 June 1-418 2-404 3-438 4-401 5-094 6-540 7 8-532 9-198 io-437 1 1-411 G G G G G Me G G I G G 4 21 80 83 95 97 56 No pho 36 43 7 16 82 272 386 576 400 206 tograph. 130 775 7i 8 9 21 60 52 54 53 3i (26 22 28 15 O 33 86 206 243 327 218 113 96 79 117 62 10 289-1 291-0 292-4 291-9 292-0 292-7 290-6 286-4 282-2 281-7 282-2 283-8 + 22-8 + 22-2 + 21-6 + 21-2 + 20-9 + 20'9 + 21-4 + 22-5 + 23-6 + 23-6 + 23-6 + 23-2 -74-3 -58-8 -44'4 -31-1 Means 35 139 50-40 +19-97 Group 483. Two small spots. i 3 - 8-5 + 8-6 + 17-6 + 26-5 + 3V9 + 51-8 + 66-2 May 30-492 G o 42 27 35-5 + 3--9 + 2O-2 Means o 27 35-5 + 3'9 31 '33 288-00 + 22-29 TAKES AT (IRKKSWICH, IS IShlA, AT MKLBOrRSK. AND IS MAURITIUS, IX T1IK VKAK8 1878 TO 18*1. 115 Areas ami Ilflio^raphic Positions of (inm-.s i.f Sun S-.ot.s continued. Dt.\ Bh*ten*K'l> Civil Tin,,-. Where taken. Proj. Area of Area for Group. M.-..II Longi- tude of Group. HM Lati- tude of Group. 1.0IIK' tude from Central Meridian. Date. Greenwich I'iril Time. Where taken. Projected Area of Arra for Group. M,,,,, Longi- tn ! ..f Group. Mean Uti tad* of Group. Longi- tude from Central Meridian. Umbra. Whole Spot. Umbnt. Whole S|t. I' in bra. Whole Spot. Umbra. Whole >!--. Group 488. Two spota. Group 492. Two small spot*. 1881.,, JUMP 8*532 9198 G I 11 o 55 33 6 o 3' 18 o 233-1 23I-I o + 16-9 + 18-0 o -22-6 -'57 l88l. d June 13-417 14-401 15-211 G G I 8 3 14 38 104 5 9 8 *3 74 o 210-6 210*3 2 I O*6 o -f'5'9 + 16-3 + 16-5 O + 19-6 + 3*'3 +43'* 3 *5 232-IO +17-5 Means 5 35 2IO*5O + 16-23 ... ( Group 489. A large regular spot with a small attendant. The latter rapidly increases in size. Group 493. A small spot. me 9*198 1C ll 411 I 2 13-4*7 I4-40I I5"Z1I |6-205 i"'*47 18*191 I G G G G I I I I 30 100 90 No pho no 76 61 44 47 4 108 43 535 tograpli. 620 5*' 44 308 281 158 39 82 59 (58 58 39 3* *5 3' 33 270 33* 354 34* 33' 270 *3> 76 187 132 iSo-i '79'4 178*6 178-4 178-2 178-5 178-5 179-2 '79'5 179-8 + '4'S + 14*8 + 14*8 -f'4'9 -r-'4'9 + 15'* + 15'* -f-'S'S + ' 57 + '5'9 -667 -51-0 June 13*417 G n 28 6 '5 1687 + 22*6 -22-3 39 -*5'9) 12-8 + 0-5 + ii-i + 15-1 + 39-2 + 51-8 Means 6 '5 168-7 + 22-6 Group 494. A small regular spot. \| P'lll** 46 263 179-02 + '5-'4 ... June 1 3*417 14-401 15-211 16*205 '7'*47 18-191 '9 20-404 21*482 G G I I I I G G ;i 37 *3 4<> 40 No pho 'S 3 107 I0 9 '33 I4 ^ 126 '4' tograph. 47 18 4 2 16 *9 '5 3 22 ('5 9 2 172 108 105 97 73 78 53 28 12 121-0 121-3 121-1 12 1*2 121*2 121*3 121*2 I2I*O 120-8 22-2 -21*8 22'2 22*2 -22*3 -"> 22-6 -**7 22-0 70-0 Group 490. A straggling stream of small spots. -56-7 -46-3 -32-9 -19-1 - 67 + 7'9) + 11-5 -f36-5 Jim- 10-437 ll-4.ll 12 '3'4'7 14-401 15-211 G G G G I 5 20 No pho 8 O o 60 9 tograph. 140 62 76 '5 '5 (10 5 o 65 75 80 86 36 44 '7*7 1727 172*2 171*6 '747 175-0 -29-4 -29-3 -29*3 29-2 28-9 -28-2 -577 -54'9 -37'*) -19-4 - 3'3 + 7-6 Means 9 ll 121*12 22-27 ... 1 I Group 495. iota, of which the following has disappeared by June 10. The group is on June 22. Mean* 8 64 '73''5 -29*05 (Iroup 491. A straggling stream of small spot*. not seen June 14*401 15-211 16-205 17*247 18-191 '9 20-404 21-482 22-438 23-461 G I I I I G G G G ii 67 66 36 No pho 12 O 59 'f 264 198 155 tograph. 35 17 O 5 9 4' 37 36 20 (10 o '3 o 4' 89 '47 1 06 86 56 *7 '9 21 137-8 138*0 138*7 139*1 141*9 143-1 '44'3 144-6 139-8 -18*4 -.8-7 19*0 -19-2 -19*4 -19-5 -'95 19-0 - 1 8*8 -40-2 -29 + ->5'4 1*2 + '3'9 -M9-9) + 45' 8 + 60-3 + 817 1 Jun. 10-437 II-4II 12 '3'4'7 14401 || ;"' G G G G I 10 21 No pho 28 *7 6 5 205 tograph. 1 88 75 '47 '4 21 ('9 17 >4 3 67 '99 '55 I 12 40 76 162-5 '59'3 '59'5 '597 162-0 159*8 - 9'5 " 9 '^ - 96 - 9'3 - 9'4 - 9'3 -67-9 -58-3 -44-8) -3''3 1 6-0 - 7'6 Means 15 108 160-47 - 9-48 "7 59 140-81 19-06 ... 116 AREAS AND HELIOGRAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. Date. Greenwich Civil Time. Where taken. Projected Area of Area for Group. Mean Longi- tude of Group. Mean Lati- tude of Group. Longi- tude from Central Meridian Date. Greenwich Civil Time. Where taken. Projected Area of Area for Group. Mean Longi- tude of Group. Mean Lati- tude of Group. Lougi- tude from Central .M eridiau. Umbra. Whole Spot. Umbra. Whole Spot. Whole Umbra - Spot. Umbra. Whole Spot. Group 49 5 A. A spot seen only close to the East limb. Group 500. Two small spots, of which the following has disappeared by June 25. 1881.,, June 15-211 I 10 27 27 73 o 877 o + 4-3 o -797 i88i. d June 2 3 -46 1 24^75 25-212 G G I 5 o 3 33 54 27 8 O 2 3 5 45 18 o 348-4 352-6 354'2 10-0 -69-7 Means 27 73 87.7 + 4-3 lu 4 - 8-6 3* u -407 11 38 35'73 ... Group 496. A small regular spot. Means - 9' 6 7 Group 501. Two large spots. The following spot greatly diminishes in size. June i 5 '2 1 1 16-205 17-247 18-191 '9 20-404 21-482 22-438 23-461 24"475 25-212 I I I I G G G G G I o 23 '7 43 No pho 31 23 12 21 12 O 33 79 'S 1 202 tograph. I 4 I 82 55 35 38 46 39 17 34 (26 18 13 7 13 9 59 >34 '5i 1 60 122 83 47 32 22 28 4 84-2 84-4 84-9 84-2 84-2 84-, 84-1 83-2 83-0 82-8 82-1 -27-0 -27-2 26-9 -27-1 -26-8 -26-4 -26-3 -26-5 26-5 26-9 -27-1 -83-2 -697 -55'4 -43'8 -29-1) -14-4 0'2 + 11-6 + 24-9 + 38-2 +47'2 June 23-461 24H75 25-212 26 27-280 28-527 29-416 30-481 July 1-522 2-419 3-ii5 4-444 5-460 G G I I G G G G G I G G 15 40 47 No pho 77 7' 76 45 57 39 29 34 12 72 210 177 tograph. 326 3 6l 334 217 265 109 117 95 40 108 73 54 (53 5' 4' 42 25 33 25 21 34 !9 5'5 381 206 2 I I 217 209 185 120 154 7 84 95 63 33I-3 33i'5 332-0 332-0 331-9 331-0 331-2 33I-3 330-5 33'7 331-5 330-3 33"3 + 25-8 + 26-1 + 26-4 + 26-2 + 25-9 + 25-9 + 26-4 + 27-2 + 27-1 + 277 + 27-1 + 27-5 + *7'5 -86-8 -73-1 62-9 -49-3) -35-6 2O'O - 8-0 + 6-2 + 19-2 + 3 ''4 + 4'"3 + 57-6 + 7i-i Means 16 8 9 8375 -2679 Group 497. Two very small spots. Means 45 '93 33i-i9 + 26-68 Group 502. Two spots, which rapidly diminish in size and become small and faint. June 20-404 G O '4 o 8 70-0 + 16-2 -28-5 . r 8 70-0 + 16-2 June 24-475 25-212 26 27-280 28-527 29-416 30-481 July 1-522 2-419 G I I G G G G G No pho 16 17 '4 o 4 5 25 46 tograph. 67 60 40 25 33 18 o o (6 13 1 1 8 8 3 IIO 86 7 54 39 23 H 18 10 320-8 321-5 320-9 320-3 319-0 320-6 3'8-4 318-0 JI7-8 + 28-5 + 28-8 + 28-6 + 28-4 + 28-0 + 27-6 + 28-6 + 27-1 + 257 -83-8 Group 498. Two small spots, first seen near the West limb. The group has developed into a fine stream by the second day of observation. -73'4 -60-3) -47-2 -32-0 -i 8-6 7' 1 + 67 + 18-5 June 23-461 H'475 25-212 G G I 10 126 49 33 3'3 247 7 125 72 24 3<2 368 106-2 104-1 I05-3 + H-4 +15-3 +14-7 + 48-1 + 59'5 + 7"4 , 5 47 3i97o 1 + 27-92 Means 68 235 I05-20 + 14-80 ... Group 503. A fine group, consisting principally of two large spots. The following spot breaks up into a number of fragments. Group 499. A small spot. Juno 27-280 28-527 29-416 30-481 I G G G 103 212 253 138 478 950 93 711 55 I 12 141 86 255 501 518 444 358-0 357-4 357-9 3577 -14-8 -'4'5 IA'6 - 9'5 + 6-4 + 187 + 32-6 June 23-461 G o 1 1 o 6 42-O > 19-6 -16-1 o 6 42-0 19-6 14 o -14-4 TAKEN AT (rRKKXWiril, IN INDIA, AT MKLBUUKNK, AXH IN M AI'KI I'll'S. IS IIIK VKAR8 1878 TO 1881. 117 Aiviw and lIcli.Mjruiiliii' Positions of Groups of Sim Spots <-o,itiiiufil. l>te. Qnnwieh Time. Where taken. Projected Are* of Ana (or (iron).. .V.an IxHigi- (ironp. M,-an Lati- tude of Group. Longi- tude fri'in Central Meridian. Date. Greenwich Civil Time. Where taken. Projected Area uf Area for Qrnp. Mee.ii Longi- tude of lip. Up. Mean Uti tad* of Group. a l..m Central Me, ,!,.!, Umbra. Whole S|wL Umhr, Umbra. Whole Spot Ub. Group 503 continued. Group 506 continued. i8Si. d July i ;:: 2-419 3-115 G G I 179 4* 83 665 486 385 '37 43 i it 509 498 5" o 357-6 358-0 356-4 O ~'4'4 -14-4 -'47 + 46-3 + 587 + 66-2 1881. July 5-460 6-449 7-108 G I Me 22 '7 O 106 66 39 >3 1 1 o 61 43 ^9 o 281-5 181-2 281-3 o +14-0 +24-1 +14-1 + "3 + 35'' +43-9 Means 98 462 357-57 -'4-54 Means '9 1OI 282-1 1 + *377 ... Group 504. A Urge spot with several small attendants. The group r a cluiUt of three or four small faint spota. ipiiily diminishes to become Group $07. A large spot. July 1-5*1 2419 3 "5 4+44 5-460 Q ? G G '7 4 20 17 ,S '33 116 54 21 37 '4 10 35 '34 '*3 80 3* *33'<> 233-0 *34'5 232-4 232-2 + 1J-0 + 21-5 + 12-8 + 11-6 + 13-1 -78-3 -663 -557 -40-3 -17-0 June 17-180 28-5*7 29-416 30-481 July 1-522 2-419 3-11; 4-+44 I G G G G G 1 Q g 54 10 11 3 148 343 219 65 53 7' 47 1 1 36 39 Z 9 10 6 2 O '93 105 118 33 *7 38 *7 8 318-2 3'9'3 320-2 3196 318-9 318-4 318-4 318-5 + 12-6 + 11-6 + 11-5 + 12-3 + 12-4 + 1*7 + '3'4 + I3-3 -49'3 -3'7 19-0 - 5'5 + 7-6 + 19-1 + 18-2 +45'8 '7 101 233-02 + 11-80 Group 508. A cluster of very small spot*. Means '5 ll 318-94 + 1*73 ... July 4-444 5-460 6-449 7-108 8 9-426 G G I Me G 37 o o o No pho II 74 64 *9 77 tograph. 58 47 o 44 G G G Q G I G *3 4' 3* 45 30 37 28 129 *33 170 ,56 128 181 '5' 3<> 38 *3 *7 '7 20 '5 181 228 I2O 94 7' 98 82 282-5 281-6 283-5 282-9 282-1 282-8 181-7 + *3'4 + 23-6 + '9 + 23-8 + '39 + 23-9 + *3'8 -68-5 -57-6 -41-6 -28-4 -1--2 ~ 7'4 + 9' (Iroup 510. Two very (mall spota. July 4-444 5-460 G G 4 '4 O 8 '5 200-2 200*7 -'97 -19-4 -7*'J -58-5 12 200-45 -'9-55 ... 118 AREAS AND HELIOGRAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. Date. Greenwich Civil Time. Where taken. Projected Area for Area of Group. Mean Longi- tude of Group. Mean Lati- tude of Group. Longi- tude from Central Meridian. Date. Greenwich Civil Time. Projected Area of Where Area for Group. Mean Longi- tude of Group. Mean Lati- tude of Group. Longi- tude from Central Meridian. Umbra. Whole Spot. Umbra. Whole Spot. taken. "-"- W Umbra. Whol Spot. Group 511. A regular spot forming with Groups 514, 515, and 5178 remarkable line of disturbance. Group 5 1 5 continued. 1881. July 10 11-527 12-490 13-485 14-478 15-400 G G G G G No pho 123 '13 58 59 16 tograph. 707 55 388 239 114 (44 69 73 47 7i 37 282 396 327 3'7 285 264 203-8 203-5 204-9 204-9 205-5 206-1 o +i+-a + 147 + 15-0 + HH + 14-5 + 14-0 + iro) + 24-6 + 387 + 5I-9 + 65-6 + 78-4 l88i. d July 4-444 5-460 6-449 7-108 8 9 '4z6 10 11-527 12-490 G G I Me G G G 2O 43 3 No pho 23 No pho '7 10 10 66 143 181 tograph. 142 tograph. 108 55 O 2 5 37 22 (7 12 (10 9 6 25 82 122 131 I0 3 75 66 58 33 192-9 192-8 192-4 192-1 192-3 192-5 '94'5 196-5 1967 o + 167 + 16-9 + 17-2 + 16-8 + 16-8 + 16-7 + 167 + 16-7 + 16-8 o -79-8 -66-4 -537 -45'3 -29-8) -14-2 + 17) + 17-6 Means 42 225 203-27 + 14-82 + 3 5 Group 5i5A. A regular spot, n.f., Group 509. Means . . . 15 77 193-63 + 16-81 Group 512. Three small spots. July 7-108 Me o 70 o 46 198-9 + 17-2 -38-5 July 5-460 G 7 22 4 12 243'i -147 -16-1 o 46 198-9 |+17-2 Means ... 4 12 243-1 -'47 ... i Group 516. Two large spois which soon coalesce. Group 513. Two small spots. July 9-426 10 11-527 12-490 13-485 14-478 15-400 16-395 17-141 18-481 19-526 G G G G G G G I G G 61 No pho 123 124 i*7 95 128 J33 73 18 13 334 tograph. 595 656 729 770 748 633 264 78 60 79 (8 1 84 74 7i 52 73 83 5i i7 21 432 420 409 393 407 4 2 3 425 392 184 76 97 I42-5 142-4 142-3 I42> 142-3 142-2 142-3 142-4 I42-2 14I-6 I42-O -19-3 19-6 19-8 -197 -19-7 -64-2 -50-4) 26-6 July 5-460 G " 7 27 8 33 198-2 -25-8 61-0 Means 8 33 198-2 -15-8 -23-8 10-7 + 2-3 + 14-6 +27-9 + 37-6 + 547 + 68-9 Group 514. Three or four small spots. Only one remains on July n. 19-8 19-6 -19-3 -19-3 19-6 -19-3 July 7-108 8 9-426 10 11-527 Me G G 29 No pho 24 No pho 4 7 6 tograph. 77 tograph. 18 15 (14 '4 (9 4 39 42 45 3i 18 237-3 237-2 *37'i 238-2 2 39'4 + 15-2 + '5'4 + 15-6 + '5'3 + 15-0 O'l + 15-2) + 30-4 + 45'4 + 60-5 Means 62 333 142-24 -i9'55 Group 517. A regular spot. Means ii 35 237-84 + 15-30 ... Group 515. A large regular spot, with large proper motion, and following it a large composite spot. July 11-527 12-490 13-485 14-478 15-400 16-395 17-141 1 G G G G G G I 21 *4 29 42 31 8 4 1 06 123 119 'f 63 *7 '7 25 2O '9 24 16 4 2 125 101 77 83 33 '4 9 II3-5 "3'9 1 14-2 114-4 114-9 115-1 115-9 + '3'9 + 13-8 + 14-2 + i4'3 + '4'3 + 14-6 + 14-8 -65-4 -52-3 -38-8 -25-5 -12-8 + 0-6 + 11-3 July 4-444 5-460 6-449 7-108 8 9-426 G G I Me G 5 21 6 9 53 No )ih< 39 27 126 235 259 ) tograph 331 9 21 49 33 (26 20 47 124 1 68 1 60 164 169 198-8 2OO-2 201'6 2O2'5 203-3 204-1 + 16-0 + '5'9 + '5'9 + '5'i + I4-4 + 137 -73-8 -59-0 -44'5 -34'9 18-7 - 2-6 16 63 114-56 + 14-27 TAKK.N AT dRKKNWICII, IN INDIA, AT M KLBOUtNK. AN1> IS M.U:i(irirs, IN THE YKARS 1H78 TO 1SS1. 119 1 Areas und Heliographic Positions of Groups of Sun Spots continued. Date. 1 Greenwii-h Civil Time. Wherr Ukrll. Projected Area of Area for Group. Mean Longi- tu.ie of Group. M.,,i Uti- tude of Group. tude from Outral Meridian. Date. (!re*nwich ('nil Time. Where taken. Projected Are* of Area for Croup. Mean Longi- tilde ..f Qroap. MMU Lati- tude of Group. tuiU from Central Meridian. Umbra. Whole Spot I'ml'T.i. Whole S|..t. Umbra, Whole Spot Umbra. Whole Spot Group 51*. mj*<-t cluster of small faint pots, whirh have coalesced by July 13 to form on* faint spot. A wcond ipot hu formed, following it by July 16. The group is not een on July 17. Group 522. A large regular spot, which diminishes in liie viry qnickly after passing tlie central meridian. iMi. July 18-481 19-526 10-087 21-442 22 23-083 4*4" 25-466 26-535 17-115 18-412 29-398 G G Me G Me I G G I G G 54 78 96 74 No pho 126 98 99 2 64 >7 5 1 80 3 l6 374 6>S l"Kr:i|.li. 60 7 553 553 418 178 69 13 "5 86 85 4 7 ... Group 525. A large regular aiwt with a number of small companions. The companions toon dis- appear, leaving the chief spot alone. I July 18-481 19 526 20-087 21-442 22 23-083 24-420 25>66 26-535 27-2I5 28-412 G G Me G Me I G G I <; o 9 83 80 65 No pho 43 70 7* 47 10 12 188 370 373 308 tograph. *44 328 290 211 56 88 ' 16 56 49 34 (28 22 38 44 38 10 2^ '74 *54 228 163 '44 '25 78 '79 168 56 192 29-5 30-2 3' 3 307 3'"' JI'S 30-2 30-3 31-8 3'-5 33-o + .4-' 4-14-2 4-14-6 4-14-4 4-147 4-'4-9 4-127 4-122 + .2-3 4-11-8 4-10-8 -57'4 -42-9 -34'4 -17-0 - 5-8) 4- 5'4 4-21-8 4-35-8 4-51-4 4-60-2 4-77-4 July 23-083 24-420 15-466 26-535 17-215 28-412 29-398 30-453 3' Me I G G I G G I 53 70 47 187 130 "5 '*7 69 No pho .91 53 707 711 M 621 570 43 : jr.ij K. /o 56 94 1 06 70 61 70 4* (59 25- 420 455 408 35' 3*9 3'3 244 255 318-3 3'9'3 319-1 3'9'5 318-6 319-1 318-9 318-9 318-4 4-14-3 4-24-6 4-24-4 4-i3-9 4-2 4 -3 4-24-0 4-23-8 4-23-7 4-14-0 -67-8 -49-1 -35-4 20-9 -12-7 + 3'5 4-16-4 4-30-4 4-43-0) kOi 34 169 31-01 4-I3-34 120 AREAS AND HELIOGRAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. Date. Greenwich Ciril Time. Where taken. Projected Area of Area for Group. Mean Longi- tude of Group. Mean Lati- tude of Group. Longi- tude from Central Meridian. Date. Greenwich Civil Time. Where taken. Projected Area of Area for Group. Mean Longi- tude of Group. Mean Lati- tude of Group. Longi- tude from Central Meridian. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Group 525 continued. Group 5 28 A. A small spot, s.p. , Group 525. i88i. d Aug. 1-435 2-501 3-116 G G I li 33 294 207 98 76 1 06 73 265 288 218 o 317-9 117-9 318-5 o +24-2 +23-9 +23-7 o + 55'6 + 69-7 + 78-4 i88i. a July 24-420 I 7 39 5 28 o 322-8 + 13- o -45-6 5 28 322-8 + '3' Means . . . 74 3 l6 318-70 +24-07 Group 529. A faint spot. Group 526. A large regular spot, crossed by a fine bridge. July 26-535 27-215 28-412 G I G 9 13 4 44 5 24 5 7 2 3 12 318-2 318-5 318-2 + '37 -r'4'4 + 13' 22'2 -12-8 + 2-6 July 23-083 24-420 25-466 26-535 27-215 28-412 29-398 30-453 3i Aug. 1-435 2-501 3-116 4-45I Me I G U I G G I G G I G 36 130 216 162 237 233 172 No pho 185 I2 9 76 33 66 316 573 883 755 940 907 842 tograph. 802 569 339 157 o 36 97 135 94 129 126 97 (114 132 118 88 95 130 313 428 552 439 5" 490 476 524 573 522 394 449 309'9 309-6 309-5 3087 308-4 307-2 306-7 306-1 305-3 34'5 304-0 304-8 304-1 + 26-2 +26-5 +26-8 +26-9 + 26-8 + 27-1 + *7'3 + 27'3 + 27-6 + 27-8 + 277 + 27-3 + 27-2 -76-2 -58-8 -45-0 -31-7 -22-9 - 8-4 + 4'2 + 17-6 + 29-9) +42-2 + 55'8 + 647 + 817 Means 5 21 318-30 + 13-70 ... Group 530. A small spot. July 28-412 G 15 o 8 322-6 + 9'9 + 7' Meuns 8 322-6 + 9'9 Means ... 97 446 306-83 + 27-12 Group 531. A large spot, with occasionally one or two small companions. Group 527. A cluster of small spots. July 28-412 29-398 30-453 3' Aug. 1-435 2-501 3-116 4'45 ' G G I G G I G 57 8? 185 No pho 77 44 46 13 290 39 656 tograph. 34' 224 T 64 31 % (72 49 36 48 3' 157 201 34' 279 217 185 207 '53 296-9 298-1 297-4 298-4 299-3 300-7 302-3 301-8 + 17-8 + '7'9 + '7'9 + 18-6 + 19-3 + 19-6 + '9'3 + 18-8 -18-7 - 4'4 + 8-9 + 23-0) + 37'o + 52-5 + 62-2 + 79'4 July 24-420 25-466 26-535 27-115 28-412 I G G I G 9 9 66 40 66 38 o 6 5 o 64 28 18 37 20 312-1 3'3'7 3H'5 312-7 313-0 -137 -13-4 -13-4 -I3-3 -13-9 -56-3 40-8 -25-9 -18-6 - 2-6 ^eans 2 33 313-20 -I3-54 -\t 5i 218 299-36 + 18-65 Group 528. A cluster of small spots. Group 532. A large spot of irregular outline. July 24-420 25-466 26-535 27-215 28-412 29-398 30-453 31 Aug. 1-435 2-501 I G G I G G I G G IO 130 96 1 66 92 94 89 No pho 26 4 66 498 565 485 452 433 362 tograph. 161 58 12 125 6 7 I 06 5' 5' 49 (34 '9 3 83 476 405 310 252 232 199 ,56 I 12 5" 304-4 299-4 299-6 299-0 300-3 300-9 300-9 300-8 300-7 299-9 -H-S -'5'5 -I5-5 -15-4 -I5-3 -15-2 -'5-5 -'57 -15-8 -15-8 64-0 -55-1 40-8 -3^3 -I5-3 - r6 + 12-4 + 25'4) + 38-4 + 517 July 28-412 29-398 30-453 31 ... Aug. 1-435 2-501 3-1 16 4'45 1 G G I G G I G 32 84 49 No pho 60 17 26 o 190 401 264 tograph. 367 168 98 60 18 44 25 (30 35 12 21 O 1 06 209 136 176 216 "7 80 79 292-2 292-3 291-8 291-7 291-5 291-0 291-9 290-8 + 18-6 + 18-4 + 18-1 + 18-6 + 19-1 + '9'4 + 19-1 + 18-6 -23-4 10-2 + 3'3 + '6'3) + 29-2 + 42-8 + 51-8 + 68-4 Means 52 274 300-59 -15-40 Means ... ... 23 140 291-65 + 1874 TAKKX AT GKKKXWICH. IN ISIUA, AI MKl.liol'KNK, AMI IN M.U Hint's, IN HIE YKAK8 1878 TO 1881. 121 Arras aiul Helio^niphir 1'ositions of <>rnu|>s of Sun Spots continued. Dale. Greenwich CiTil Time. Where taken. I'n.jeeted Area of Area for Up. HMD Longi- (Iruup. M.,t, Lati- in, if ni' liniup. Longi- Ml from Central Meridian. Date. lireeiiwich Civil Tinif. Where taken. Projected Area of Ana for Group. Mean tude of Group. i.'.t" lu : ,,f Group. Mi from Central Meridian. Umbra. Whole Spot. in,!.: ,. Wkok Umbra. Wl,,,, Bpot Umbra. Whol* lyot, Group 533. A small spot, followed on July 19 by another similar spot. Group 538. A large regular *pot. I88l. Blul) 28-412 29-39* 30+53 Bfainn G G I 5 '4 8 33 o 20 7 7 o '9 3' '4 o 246-0 244-0 246-1 o +177 +18-5 + 18-3 -69-6 -58-5 -4* '4 Aug. 1-435 2*501 3-1 16 4'45' 6>98 8-556 9-568 10-594 11-389 12-280 13-271 G G 1 G G G G G G G I I O 68 65 "I 110 84 No pho 89 7* 80 39 7 459 435 589 574 544 tograph. 426 353 *79 225 173 76 6l 57 66 44 (45 4 5' 30 49 44 218 588 407 398 327 284 252 220 '97 '79 172 '7' 128 o 180-4 180-4 182-1 180-3 1 80-0 180-3 180-4 180-5 180-4 1 80-0 179-9 '797 '79-8 + '37 + '3-* + '3'3 + '3'3 + 12-6 + !! + 12-6 + 12-9 + 13-' + '3-' + 12-8 + 12-6 -81-9 -6 7 -8 - 5 8-0 -42-1 -2 7 -8 + 12-3 +25-6 + 38-8 +49' + 607 + 74-o 5 21 *45'37 + 18-17 Group 534. 1 A mall spot on July 19. A second lias appeared preceding it by July jo, and the one tint seen hu disappeared by August i. July 29-398 30-453 Aug. 1-435 G I G G 12 No pho 42 81 tograph. I2 9 43 8 8 (30 53 24 5* 98 45 94 3'7'3 3'97 321-0 322-2 3'3 18-7 + 14-8 + 31-2 + 45-6) + 59'9 -18-8 -18-1 -17-3 16-9 48 272 180-32 +12-93 ... Group 539. Two small spots. 1 Mi-ans 20 83 320-50 -17-96 ... Aug. 3-116 I 4-451 G o 30 IO i 7 193-3 192-5 -27-1 -27-3 -46-8 -29-9 I Group 535. Some small spots in a straggling stream. i '7 19290 27-20 ... Group 540. A cluster of small spots. || July 30453 Aug. 1-435 2-501 X G G 3 No pho '9 18 63 ' ,-t 'I 1 -. 107 46 3 (7 12 IO 63 65 67 26 233-6 34'4 235-2 '99 54 9 19-6 41-0 -19-3 -27-1 19-0 10-3 Aug. 3-116 4'45 ' 5-561 6-498 7 8-556 9-568 I G G G G G 28 23 26 No pho 26 6 27 73 in 182 tograph. 172 66 21 '4 '5 (IS '5 4 30 IS 104 100 95 4* 180-2 181-3 182-0 182-0 183-4 184-8 1857 -187 -187 -i 8-6 -187 -18-4 -18 i -17-9 -59'9 -41-1 -25-8 -13-4 + 1-6) + 16-6 + 30-9 I 55 235-28 -19-45 ... (Jroup 536. A small spot. 12 70 182-77 -18-44 ... Group 541. A small spot. I July 30-453 31 .. A u K '. 1-435 2-501 I G G No pho 2 54 tograph. (o 39 o 9 ' 44 237-5 33 236-9 23 236-2 5 2367 + 25-0 + 25-8 + 26-5 + 24-6 -51-0 -38-6) 26-1 Aug. 5-561 G G 6 3 if) 28 2 10 16 2217 221-4 + 24-1 + '3'9 + 26-0 -11-5 Means ... 3 13 221-55 + 24-20 Means o 26 236-83 +25-48 Group 542. A small spot not seen on August 10. * liroup 537. A small spot Aug. 6-498 7 9-568 10-594 11-389 G G G G G No pho 8 12 togiaph. '3 18 IO o 6 o 41 26 12 '3 6 1 16-5 1 16-2 115-8 1156 "53 -i 8-6 -18-8 19-0 -191 -19-0 -78-9 -657) -52-4 -39-2 Aug. 1-435 2-501 G G O 18 25 O 21 20 '97'4 197-3 + 15-2 + '5'5 -64-9 -50-9 o 21 '97'35 + '5'35 ... NI t'ftl i ^ 2 16 U5-8H 18-90 PHOTO-HILIOOBA.PHIC RESULTS, 1878-1881. 122 AREAS AND HKLIOGRAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. Date. Greenwich Civil Time. Where taken. Projected Area of Area for Group. Mean Longi- tude of Group. Mean Lati- tude of Group. Longi- tude from Central Meridian. Date. Green wich Civil Time. Where taken. Projected Area of Area for Group. Mean Longi- tude of Group. Mean Lati- tude of Group. Longi- tude from Central Meridian. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Group 543. A large spot, which has broken up into a number of small fragments by August 9. Of these only one remains by August 1 1. Group 549. A large regular spot, frequently surrounded by a number of small attendants. i88i. d Aug. 20-540 21 22-391 23-402 24-399 25-271 26-376 27-390 28-399 29-312 30-525 31 Sept. i -407 G G G G I G G G T G G 30 No pho 58 47 104 103 80 86 55 39 29 No pho '9 "3 tograph. 258 2/3 558 583 478 454 301 226 182 togruph. 7' 5' (49 47 3' 61 57 43 48 33 26 25 (32 39 '94 200 207 1 80 327 321 258 252 179 '52 "57 'Si '44 o 295-3 295-4 295-6 294-8 294-5 294-0 293-9 293-1 292-5 291-8 291-4 291-0 290-6 +28-7 +28-4 + 28-0 + 28-6 +28-3 + 28-0 + 28-6 +28-6 +28-5 + 28-4 +28-4 +28-5 +28-6 -74'5 -62-6) -4-9V -37-2 -24-3 ;'3 +13-8 +26-6 +37-9 +53-5 +65-6) +77-6 I88l. d Aug. 8-556 9-568 10-594 11-389 G G G G 5' 23 '7 280 102 126 8 29 '4 12 O 'I 8 62 89- 7 179-0 178-3 178-9 178-1 o -1 8-6 18-4 -18-6 -17-4 o + 10-8 + 23-5 + 377 + 47'3 Means '4 79 178-58 18-25 Group 544. A small spot. Aug. IO-IJ94 G o 6 o 4 106-4 24-0 -34-8 Means 4 106-4 -24-0 42 209 293-38 +28-43 Group 545. A small spot. Group 550. Several small spots in a somewhat scattered group, which undergoes frequent and rapid changes. Aug. 1 1 '389 G o 8 5 131-1 -28-6 + 0-3 Aug. 22-391 23-402 24-399 25-271 26-376 27-390 28-399 29-312 30-525 G G G I G G G I G 28 36 4 2 30 44 57 5' 61 8 138 141 214 230 202 263 3'7 246 77 44 34 30 18 23 *l 26 32 5 215 '34 '54 140 108 '34 161 130 46 273-0 273-0 272-7 272-8 272-8 272-5 271-8 271-3 271-3 + 13-9 + 13-6 + '3 - 4 + 13-4 + I3'i -r-13'4 + 13-1 + 14-0 + 12-6 -72-3 -59-0 46-1 Means 5 131-1 -28-6 Group 546. A straggling group of small spots. -34-5 -19-4 - 6-8 + 5'9 + '7-4 + 33'4 Aug. 11-389 12-280 13-271 G I I K 3 93 83 99 26 10 2 57 51 64 126-7 125-9 124-0 -29-3 - 4 - i + 6-9 + 18-2 28-8 -28-7 Means 27 136 272-41 + 13-38 .- Means '3 57 125-55 -28-93 - Group 551. A small spot. Group 547. A straggling group of small faint spots. Aug. 23-402 G o 5 6 267-3 + 18-0 64.-? Aug. 17-423 18-284 19-316 20-540 G I I 27 o 4 9 69 '53 65 33 '4 o 2 5 36 78 34 '9 40-7 39'9 38-9 38-9 + 16-8 + 16-5 + '7'3 + 17-6 -10-3 + 0-3 Means 6 267-3 + 18-0 ... + 12-9 + 29-1 Group 552. A large composite spot, with a number of small companions. The group undergoes frequent and rapid changes. Means . . 5 42 39-60 + 17-05 Group 548. A small spot Aug. 23-402 24-399 25-271 26-376 27-390 28-399 29-312 G G I G G G I 22 3' 52 52 87 '43 198 95 171 302 246 446 824 756 26 25 35 3 45 72 103 in 140 2OI I 4 2 3 2 416 392 266-3 266-0 266-0 265-1 265-5 266-5 266-6 + '5'4 + 15-0 + 14-9 + 14-8 + '47 + '3'9 + H-3 -65-7 -52-8 -4i-3 -27-6 -,3-8 + 0-6 + 12-7 Aug. 20-540 G o 8 o 1 1 305-2 -14-0 -64-6 Means ii 305-2 -14-0 TAKES AT CICKKNWU II. IN iNI'IA, AT lUUOOBlfB, ASH IN M.\I Him'* IN THK Y K UC.s 187* M 1881. \'22 AHMS uiiii HaliOgI*phk l'sitions nf (irnu]is nl' Sun Spots contiitin-il. D.u. (irr'-M li-li 1,'ivil Tim*. Where Ulcm. Projected Area of Area f..r Group. Mean bMgl tude of Group. Mean Lati- tnde ol Group. Longi- from Central Date. Oreenwii li ' ml Time. Whir* taken. Projected Area of Area for Group. Mean I/ngi- tude of C.I 1|' M-an tnde of Bnvp Longi- lr..in I'entlal Umbra. Whole Spot. Umbra. Whole riui.n. Whole Spot. Umbra. Whole Spot. Group 552 contiii Group 556. i. 30-515 G Sept. 1407 G [I 3-49 Me 36 Nn pho 78 No phi) O 1032 to^r.iph. 624 tograpli. '4* 78 (- 65 (3* 593 556 520 389 158 2667 266-7 266-7 266-7 266-7 e + '4'3 + '4'6 + 14-8 + '5-4 + '5'9 O + 28-8 + 4'') + 537 + 64-6) + 75'4 A imall spot on August 16, with a few faint markings near it The disturbance rapi'lly dcvrlnps, ami on August 17 the group is composed of a number of small but dark apota in an irregular stream. l88l.,, Aug. 26-376 27-390 28-399 19-311 30-525 3' Sept. i -407 G G G I G G 16 '55 102 68 6< No pho 9 5 557 45 334 379 tograph. 46 9 82 54 38 43 (26 10 *7 *93 *'5 188 *54 '53 53 276-2 275-8 275-2 275-6 277-8 *77'9 278-0 +24-0 + *4-5 + *4'3 + 23-8 + *3'4 + 23-2 + 22-9 O -16-5 - 3'5 + 9-3 + 21-7 -f-39'9 + 5*'5) +65-0 1 Means 49 3*9 266-29 +14-83 Group 553. 1 A large regular spot. A second spot of considerable size has formed, following the tint by August 16. Means 37 169 276-64 + *373 JAun. 23-401 -4 399 1 5-171 27-390 28-399 19312 30-525 Sept. 1-407 j 1 3 49 G I U G G I t; G Me 53 68 65 192 181 186 82 121 Xii pho "3 No pho 40 202 338 4*3 7*' 783 7 2 706 683 lograph. 466 togrsph. '75 73 60 45 "3 S3 (78 88 (78 69 *77 199 291 4*4 4 '2 376 367 388 376 364 312 261 262-3 163-1 264 5 263-2 163-6 263-7 262-6 263-5 263-4 263-2 263-2 263-2 + 97 + 20-3 + 20-8 + 10-5 + 20-8 + 20-6 + 20-4 +20-3 + 2O'2 + 2O'l + 205 + 20-9 -697 -55-6 -42-8 -29-5 -'57 2'2 + 7 + 25-6 + 37-9) + 50-2 + 61-1) + 71-9 Group 557. A single spot. Aug. 26-376 27-390 18-399 29-312 3'5 2 S G G G I G 5 *7 21 3 8 21 62 102 65 33 *S 39 20 2 5 98 9' 95 48 20 211-3 2 I 2'7 213-I 2I3'0 212-8 -17-4 -17-1 -17-0 -17-6 -17-9 -81-4 -66-6 -52-8 -40-9 -25-1 Means 76 346 263-30 +10-43 18 70 2I2-58 -17-40 ... Group 554. One or two small spots. Group 558. Four small apota. I Aug. 13-401 14-399 16-376 17-390 <; G I G G 6 o 18 ,6 37 38 61 9 76 6 o 18 9 64 4' 47 57 43 57'3 *557 258-4 256-0 255-2 + 20-0 + 20-5 + *i'5 + 20-9 + *i-| -747 -63-1 -48-9 -36-7 -24-1 Aug. 30-525 G 4* 211 *3 1.6 *597 + 16-1 + 21-8 \f ,,.,- J 50 156-52 + 20-80 Means *3 116 *597 + 16-1 . . . Group 5 54 A. A small spot. Group 559. A few small spots. Only one of these remains on Sepl greatly increased in six*. .ember I, but that one has I o 46 o 14 309-4 -8-J + 2-1 o 24 ! 309-4 8-C Aug. 29-312 I 30-515 G 31 Sept. i -407 G 4 7 No pho *3 57 28 tograph. 99 ( .i 17 3* 16 44 73 255-1 *54'5 254-0 ^53-4 -18-0 -7'9 -18-4 -18-9 + ! + 16-6 + *8'5) + 4'4 Croup 555. A small spot. IAug. 16-376 G 8 *3 4 ii 307-1 +15-9 + '4'4 4' *54'*5 18-30 Means ... 1 ... 4 12 307-1 +15-9 Means 124 AREAS AND HEUOGRAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. Date. Greenwich Civil Time. Where taken. Projected Area of Area for Group. Mean Longi- tude of Group. Mean Lati- tude of Group. Longi- tude from Central Meridian Date. Green wicli Civil Time. Where taken. Projected Area of Area for Group. Mean Longi- tude of Group. Mean Lati- tude of Group. Longi- tude (row Central Meridian Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Group 560. A small spot. Group 565. A cluster of small spots on September 6. Only one small spot remains by September 7. 1881. d Aug. 30-525 3i Sept. i '407 G G 9 No pho 8 5 tograph. 39 9 (7 5 5 37 2 4 176-9 176-8 176-6 o + 13-5 + 13-5 + 13-4 6i'o -487) -36-4 1881. d Sept. 6-436 7-567 G G '7 38 10 1 1 O 25 9 o 188-0 190-5 o +14-3 + '4'4 o +41-4 + 58-8 Means 6 17 189-25 + I4-35 Means 7 37 176-77 + 13-47 Group 566. ;ar spot on September 6. The group rapidly develops into a fine stream, r of which is much the largest member. Group 561. A large composite spot, divided by a bright bridge, and followed by several smaller spots. A small regu the leade Sept. 6-436 7-567 8-238 9-269 IO-I88 i j-i66 12-287 13-583 H'443 >5'559 G G I I I I I G f~\ G 18 121 122 136 245 2 4 I 207 221 120 5 55 4'3 494 1067 1187 1633 1214 1016 646 234 '3 7i 67 70 124 127 123 170 120 IOI 40 244 270 547 601 860 718 777 655 479 99-7 I OO'O 99-9 99-5 99-5 100-8 IOI-2 101-6 102-0 I03-0 + 13-5 -46-9 + '37 -3'7 + 13-5 -22-9 + 13-8 - 97 + 14-1 + 2-4 + 14-1 + 16-6 + 14-1 +31-8 + '37 +49'4 + 13-0 +6n + 12-2 +76-9 Aug. 29-312 30-525 3' Sept. i -407 2 3-049 4-655 5-289 6-436 7-567 8-238 9-269 I G G Me G I G G I I o 79 No pho 189 No pho 148 '59 196 120 99 7i 33 43 33 tograph. 935 tograph. 818 978 1008 7*4 535 260 97 105 (120 ,36 ("3 *% 96 123 86 92 78 65 139 45i 563 675 586 497 I 91 629 517 482 284 194 177-2 176-5 178-8 181-0 180-6 180-2 179-5 179-1 1787 178-8 179-0 J79 - 5 -25-5 -25-2 -25-2 -25-1 -25-2 -25-3 -25-4 -25-4 25-0 -25-3 25-1 -767 -61-4 -467) -32-0 2I - 6) i ri + 9"4 + 17-4 + 32-1 + 47-I + 56-2 + 7'3 Means 99 5'9 IOO-72 + 13-57 -24-9 Group 567. A small faint spot. Means 92 467 179-08 25-22 Group 562. A small faint spot. Sept. 7-567 8-238 G I 3 2 5 23 2 O 18 '4 86-2 86-2 + 16-2 + 15-6 -45-5 -36-6 i 16 86-20 + 15-90 Sept. 1-407 G o 28 O 22 168-9 20-2 -44-1 Group 568. Two regular spots, with occasionally some very small attendants. Means O 22 168-9 20-2 Group 563. A small spot followed on September 5 and 6 by a small companion. Sept. 12-287 I3-583 H'443 >5-559 16-602 I G G G G 82 IOI 64 52 277 34* 281 '59 25 44 63 f 60 o 148 216 216 188 87 87-2 88-4 89-1 90-4 93H - 3'o - 3'3 - 37 - 3-6 - 3-6 + 17-8 + 36-2 +48-2 +64-3 + 8ro Sept. 4-655 5-289 6-436 7-567 G o I 61 G 27 G 13 32 o '59 33 125 16 33 10 17 86 76 25 173-2 174-2 175-7 177-7 IO'4 IO'4 + 3-i + 12-5 + 29-1 + 46-0 -IO- 3 ~ 9'5 Means 43 171 89-70 - 3'44 Means '5 5i 175-20 IO-I5 Group 569. A small spot. Group 564. A small faint spot. Sept. 1 1 -i 66 12-287 13-583 H'443 I I G G 13 6 9 35 36 23 4 12 4 5 o 32 24 '3 2 27-2 277 27-4 27-4 + 177 -57' + 17-0 -417 + 17-2 24-8 + 17-6 -13-5 Sept. 6-436 G 9 28 15 45 219-6 + 2I-I + 73' Means 15 45 219-6 + 2I-I Means 5 18 27-43 + 17-38 ... 1 TAKEN AT GREENWICH, IX IxiMA, AT Mei.BOCKNK, AXI> IN MAI 'IJITIfS, IN TUB YKAR8 187H TO INS]. 125 An H'li'>u'ni]>!iir I'uMtioiis .if Crimps of Sun Spots -<-n,tti,. Date. Civil . wi,,.,,- .iki-:i. rVoji Area of An-a for Group. KM Longi- tude of Group. HIM Uti- I'!'' '{ i.i..i,|.. Longi- tude ii'iin .Vl.ti.i Date. ' .p -rnwii'li i'ivil Time. When- taken. Projected Are* of Are* for Group. \i. !.! .1- tude of Oroup. Meau Uli- Mi ..i '.i.. :[,. ';:;: dm Central MetMi.u U:nbra. Whole Spot. ^- '5? Umbra, Whole S|.i. Umbra. Whole Spot. (Jroup 570. Three or four small spots. Group 573. A small ipot l8Si.., i l- 166 12-287 '3'53 '4-443 '5'559 I 1 G <; G 10 ft 17 20 t tf 49 --> 54 39 IO 12 IO 1 I 4 +8 36 30 *9 20 o 2 3'9 12-5 21-5 21-9 22*1 + 19-8 + I8'9 f^^ + '97 + 19-6 o 6O'3 -46-9 -307 ig-O ~ 4-0 1881. Sept. 13-583 G o 27 '4>43 G 14 30 15-559 G '5 *8 16-602 G 7 23 17-452 G o 9 O 3 IO 4 o 37 *7 '9 13 S o 344'* 343-8 344'' 344-3 344'' o + 17-8 + 18-0 +17-6 + 7'i + "7- O 68-0 -57-i -42-0 -28 i -17-1 Mean* 9 33 22-38 4-19-52 M-.ins 5 to 344-10 + '7'54 ... Group 571. Two Uiyf regular spots on September n. Theee hare united by September 15, but hare broken up again by September it. Group 573A. A spot seen only olose to the West limb. Sept 18-238 19-222 I I 16 IS 61 18 64 27 6 9 '34 55'* 55-0 + 11-0 + 10-7 +64-5 +77'* Sept. 12-287 13-583 '4-443 1 5'5 59 16-602 17-451 18-238 19-222 20*461 21-284 22-287 ij-t7 *4'4*3 I Q G (1 G G I 1 G I I I G O 78 6 9 9* 105 95 8 73 45 3* '7 8 "5 228 97 39* 43' 479 298 3-3 284 258 1 12 75 2 S o 76 5* 56 57 4 2 46 45 43 30 *7 21 3 270 "4 "5 *39 *34 248 'S 2 '95 167 '73 95 95 9' 35I-4 +|6'2 35I-9 4-I7-0 352-0 +17-4 352-2 +17-5 352-1 +177 35I-9 +17-9 351-8 +I7-5 352-1 +17-6 351-6 +I7-8 352-0 +17-9 351-6 +l8'0 352-0 + i8'o 353-Q +I7-S 78-0 60' 1 M eaus *3 102 55-10 + 10-85 ... -48-9 -33-9 -20-3 - 9'3 + 1-1 + '4'3 + 30-2 + 4I-5 + 54-3 + 67-9 + 83-8 Group 574. A regular spot Sept. 19-222 20-461 21-284 22-287 23-287 24-423 2 5'45* 26-488 *7'557 28-461 I G I I I G G G G G *3 21 17 7 17 16 12 '9 o o 64 100 56 5 A 56 47 *7 3 8 7 38 '9 12 10 1 6 10 107 9* 4 35 3 *4 !S 5 S 264-1 264-0 264-3 263-8 *63'3 263-7 263-2 263-1 262-5 262-7 + 15-1 -73-7 + 15-0 -57-4 + 14-6 46-2 + 14-1 -33-5 + 14-5 20-8 + 14-6 - 5-5 + '4'S + 7'6 + 14-4 +21-2 f'4'5 +34-7 + 14-6 +46-9 Means ... 4' 185 35''97 + '7'SS Group 572. Two large regular S|K>U on September iz. These hare united by September 15 a rery larict. 1-396 I G I I I G G G G G G 16 47 58 It 96 68 62 7' 80 67 49 '7 9' *43 276 34 4 < 6 462 500 408 401 377 306 ,69 96 39 5' 48 36 35 5<> 35 33 4* 54 I 37 217 264 228 201 2 39 242 2 59 218 236 |J5 264 223 2 '3 257-8 2 57'9 257-8 - 2 577 258-1 - 2 57'6 - 2 57'5 - 2570 - 256-9 - 256-5 - 256-8 2556 -f*i-4 + 21-5 + 21-0 f20'7 + 20-8 4-20-9 f 207 f *0'5 t-20'4 f-20'5 f-io-7 h2O'2 J-20-6 80-0 -6j-s -5 2 '7 -39-6 -26-4 1 1-1 + 2-0 + '5-6 4-29-2 + 4' ' 4-54-5 +68-4 + 78-5 Means 64 361 346-62 +22-86 \f 45 2 35 Z 57'3 +1076 126 AUEAS AND HELIOGRAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. Date. Greenwich Civil Time. Where taken. Projected Area of Area for Group. Mean Longi- tude of Group. Mean Lati- tude of Group. Longi- tude from Central Meridian Date. Greenwich Civil Time. Where taken. Projected Area of Area for Group. Mean Longi- tude of Group. Mean Lati- tude of Group. Longi- tude from Central Meridian. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Group 575A. A small spot. Group 579 ccmtinuefJ. i88i. d Oct. 1-396 z'579 G G G O 8 3 o 17 9 2 O 2O o 2I2-7 212'9 o 16-0 -'57 + 35-6 + 62-5 I88l. 4 Sept. 22-287 I o 49 26 o 307-8 G + 22-6 o + 10-5 26 307-8 + 22-6 3-420 Means 4 12 21 r6o 16-15 Group 576. A large regular spot. Group 580. Three or four small spots in a compact cluster. The group increases in size as it approaches the West limb. Sept. 25-452 26-488 27-557 28-461 29-499 JO'544 Oct. 1-396 2-579 3 '4 2 4-462 5-286 6-291 7-399 G G G G G G G G G G I I G 18 44 53 85 104 126 7' 74 52 40 29 2 9 18 87 212 288 405 486 427 437 411 294 234 122 122 5 72 65 9 61 62 67 36 38 28 24 20 *7 29 348 312 264 289 289 227 223 211 I 5 8 141 85 113 79 171-1 1707 170-2 170-0 170-0 170-1 169-9 170-4 170-2 170-2 170-2 170-5 170-5 + 15-' + I4-8 + 14-6 + 14-8 + I 5 -I + I4-6 + I4-5 + '4"5 + '4'5 + '4'4 + 14-1 + 14-3 + 14-3 -84-5 -71-2 -57-6 -45-8 -32-0 -18-3 - 7-2 + 8-9 + 19-8 + 33-6 + 44-4 + 57-9 + 72-6 Sept. 29-499 30-544 Oct. 1-396 2-579 3-420 4-462 5-286 G G G G G G I 18 '3 8 18 8 6 29 27 38 39 65 58 104 9 7 5 13 8 8 '5 >4 20 2 4 46 56 150 I95-0 192-5 l 9 4-8 '95'9 194-9 I95-8 196-6 + 15-6 + 157 + 15-9 + 15-8 + 15-8 + >5'4 + 14-8 - 7-0 + 4-' + 17-7 + 34'4 + 44-5 + 59'2 + 70-8 Means 7 46 I95-07 + I5-57 Group 581. A cluster of small spots, increasing rapidly in size during the period of observation. Means ... 44 211 170-31 + 14-59 Oct. 1-396 2-579 3-420 4-462 5-286 6-291 7-399 8-296 9-300 . 10-293 G G G G I I G I I I 8 '9 "5 tj 77 78 53 26 21 64 77 164 360 443 418 34 282 190 7 3 9 25 36 45 Si 42 27 o '9 43 47 93 203 260 274 265 292 333 I28-I I27-9 I28-I 127-7 I28-7 1297 129-3 129-1 129-1 129-5 20-9 20-0 -49-0 -33-6 Group 577. A small regular spot. -20-5 -20-3 -20-3 -19-8 -19-5 20'I 20-2 2O'O -22-3 - 9'o + 2-9 + 17-1 + 31-4 + 43'i + 56-3 + 69-8 Sept. 26-488 Z7-557 28-461 29-499 30-544 Oct. 1-396 G G G G G G IO 10 5 5 16 18 37 13 4 o 8 7 3 3 ,1 '5 25 8 8 174-2 '74'3 173-0 172-5 172-3 172-2 -25-2 -25-3 -25-0 -25-1 -25-0 -25-0 -67-7 -53'5 -42-8 -29-5 -16-1 - 4'9 26 183 12872 20-16 I Group 582. A single spot. Means 4 '4 173-08 25-10 ... Oct. 1-396 2-579 3-420 4-462 5-286 G G G G I 5 4 ii '3 7 '9 '7 i5 22 33 9 8 8 4 34 16 ii '3 18 I02'0 I02'3 I02-5 I02'7 I02'9 + 12-1 + II-9 + I2-I + II-9 + I2-I -75-1 -59-2 -47-9 -34-0 -22-9 Group 578. A small spot. Sept. 27-557 28-461 29-499 G G G 10 8 2 2 5 13 '5 5 4 i 13 7 9 226-5 228-7 230-1 - 87 - 8-1 - 7'9 - 8-23 - ''3 + 12-9 + 28-1 7 18 102-48 + I2'O2 3 10 228-43 Group 583. A cluster of small spots. Group 579. Two small spots on September 29, which on the succeeding days approach each other and coalesce. Oct. 2-579 3-420 4-462 G G G 16 8 '7 60 40 59 '5 1 1 40 57 53 141 22O'2 218-9 216-3 + '9'4 + 19-6 + 20-8 + 5 8 '7 + 68-5 + 79-6 Sept. 29-499 30-544 G G II 5 49 1 8 6 3 27 1 1 209-1 211-7 1 A-T + 7-i + 23-3 10 7 -16-2 22 84 2I8-+7 + 19-93 TAKES AT GREENWICH, is INDIA. AT MKLBOURNK. AM> IN MADHITIUS, IN THE YKARS 1878 TO 1881. 127 isaiic! Hclii>-_Tui'hir Positions of (Jumps nf Sun Spots matin Data wich Cifil Time. Where Proj' Anauf Area lor Group. Mean Longi- u i.- ..i Qroop, Mr.,,. Lati- tude of Group. Longi- from Central Meridian Date. Greenwich Civil TIHH-. Win-re taken. Projected Area of Area for Group. HM i, ..-,. Group. Mean 1.. tudeof Group. fi.m Central Uendian Umbra. Whole Spot. Umbra. Whole Spot Umbra. Whole Spot 5S- C>roup 584. Two very small s|U clot* together. Group 588. A group Ktradily diminishing in niie. 'd +462 G G o o '7 8 o o '4 5 96-4 97-0 + 14-2 + 14-1 o -54-0 -397 1881.,, Oct. 10-193 11-284 12-296 13-280 14-398 I I I I G 12 67 89 74 35 3* o 4 '4 7 '4* 109 *4 '9 o 341-9 339-' 338-5 o + 14-3 + *4'3 + *4'5 + 25-0 + 14-6 -77-8 -661 -53'* -41-1 -17-1 Mea.ii.- o 10 96-70 +14-10 Group 585. A single |x>t 5 71 340-00 + 4'54 ... Group 589. A large spot, frequently with some close companions which eventually coalesce with it jOrt. 6-291 7-399 I G 6 o 64 36 5 o 54 50 165-8 168-1 + 10-4 + 53-* + 70-2 Oct. 14-398 15-398 16-287 '74*3 18-396 19-522 10-478 11-175 11-284 23 288 24-280 15-430 16 406 G G I G G G G I I I I G G 16 45 48 10J 140 1 7 8 183 10 S 80 63 So o 166 176 141 602 600 8 ! 5 1061 IS 4*5 300 64 30 47 38 66 78 9* 94 ,07 i 63 53 104 S'4 288 '93 381 335 443 476 382 337 357 390 107 189-8 290-4 189-5 288-9 288-9 288-9 289-0 289-3 288-9 189-1 188-6 287-8 289-5 + 16-1 + '5'9 + '57 + 16-0 + 169 + '5'9 + 16-1 + 16-0 + 16-1 + 16-1 + '5'9 + '4'9 -75-8 62-0 -51-1 -36-8 -14-0 - 9'' + 3-6 + '45 + 7-3 + 40-9 + 53-3 + 677 + 82-3 Means 3 5* 166-95 + 1970 Group 586. A large regular pot, usually with a few companions. t. 6-291 7-399 8-196 9-300 10-293 11 284 12-296 13-280 14-398 15-398 16-287 17-413 1 G I 1 1 I I G G I G 45 101 83 69 80 80 100 64 9* 75 45 '55 55' 535 537 596 5 .-t. 16-287 18-396 I <: G o *7 34 63 100 30 27 '43 1 10 126 262-1 262-5 262-3 + 20-9 + 20-8 -78-6 Mean- 2 ' '56 33-94 -"74 50-6 128 AUKAS AND HELIOGRAPHIC POSITIONS OK GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. Date. Greenwich Civil Time. Where taken. Projected Area of Area for Group. Mean Longi- tude of Group. Mean Lati- tude of Group. Longi- tude from Central Meridian Date. Greenwich Civil Time. Where taken. Projected Area of Area for Group. Mean Longi- tude of Group. Mean Lati- tude of Group. Longi- tude from Centra Meridian Umbra. Whole Spot. - X!' Umbra. Whole Spot. Umbra. Whole Spot. Group 591 continued. Group 594 continued. ltll. Oct. 19-522 20-478 21-275 22-284 23-288 24-280 2 5'43 26-406 G G I I I I G G 4 1 5' 49 33 47 4 1 37 8 232 2*7 285 207 173 'S 1 '47 38 26 2 9 26 17 2 5 24 26 7 H7 129 153 108 93 88 IO2 34 262-2 262-0 261-7 262-0 262-0 262-1 261-9 262-9 o + 20-8 + 2I-I + 21'3 + 2IM + 2I-I + 21-2 + 21-2 + 20-7 o -35-8 -*3'4 -i3'i + 0-4 + '37 + 26-8 + 41-8 + 557 1881.4 Oct. 27-285 28-275 29-486 I I G 4 o o I 5 6 31 30 3 o 131 36 102 o 247-9 246-5 2 49'3 + 207 + 2 J'2 + 21'9 + 5^-3 + 64-0 + 82-7 Means 3' 199 248-96 + 20-63 ... Group 595. A small spot. Means 22 112 262-15 + 21-02 Group 592. A large regular spot followed by a very small companion. The group develops into a short stream. Oct. 26-406 27-285 28-275 29-486 G I I G 4 '5 9 17 32 38 38 9 '3 6 37 38 3 2 2 5 I33-4 133-7 J33'4 132-9 18-8 -73-8 -19-3 -61-9 -19-4 -49-1 -I9'5 -337 Oct. 17-423 18-396 19-522 20-478 21-275 22-284 23-288 24-280 25-430 26-406 27-285 28-275 G G G G I I I I G G I I 4 2 45 58 138 96 130 103 79 89 61 '9 6 ,46 211 536 7H 5 OI 587 39 1 420 306 220 132 38 57 4' 4i 84 55 72 58 47 63 55 2 5 16 198 190 378 436 287 325 22O 2SI 218 200 172 9 8 260-7 261-6 260-2 260-0 259-8 259-0 259-0 258-6 258-8 258-9 259-6 258-8 19-0 -19-4 -I9-5 -19-4 -I 9 -2 -19-5 IQ'C 65-0 -5i-3 -37'8 ~ 2 5'4 -15-0 - 2-6 + 107 + 2 3-3 + 387 + 517 + 64-0 + 76-3 Means 7 33 133'35 -19-25 Group 59 5 A. A compact cluster of small spots. 7 3 19-2 -19-8 -19-7 20'I 19-8 Oct. 27-285 I o 109 56 141-5 + 15-6 -54-1 o 56 141-5 + 15-6 ... Group 596. Three small spots. Means ... 5i 248 259-58 -19-51 Group 593. A few small unstable spots in a scattered stream . Oct. 30-568 G o 34 *3 190-0 -137 + 377 Oct. 20-478 21-275 22-284 23-288 24-280 25-430 26-406 G I I I I G G 22 O O O O 9 61 62 60 30 56 '9 ii 32 o o 5 o 9 65 46 20 3 2 10 6 214-5 2 >3'5 213-6 210-9 212-3 209-6 209-7 + 20-3 + 20-5 + 20-5 + 20-6 + 20-8 + 21-6 + 21-5 -70-9 Me&ns o 2 3 190-0 -'37 ... 48-0 -37'4 -23-0 -10-5 + 2-5 Group 596A. A pair of spots. Nov. 1-153 I 57 o 62 194-2 + 15-3 + 62-8 Means 5 38 212-01 +20-83 Means o 62 194-2 + I5-3 Group 594. A large spot preceded by e. few spots in a short stream. Group 597. A small spot. Oct. 22-284 23-288 24-280 25-430 26-406 I I I G G '9 114 125 116 53 *35 527 607 595 3 6 4 10 59 67 69 36 I2 4 274 326 35^ 249 250-8 250-0 250-5 248-1 248-6 + '9'9 + 2O"2 + 20-3 + 20-5 + 20-3 -10-8 + 17 + 15-2 + 28-0 +4-'4 Nov. 5-498 G 2 8 2 7 127-3 + 10-7 + 53'' 2 7 127-3 + 107 TAKK.N AT < lliKKSWli'H. IS I.M'IA, AT MKI.BOUKNK, AND IN MAURITIUS, IS TIIK YKMIS 1^78 TO 1881. 129 An-iis ami Efohographio Positions of Groups of Sun Spots continued. Detr iBtMnwi li Tun p. Where Uk.n. Projected Arra of Area for Group. KM Longi- tude of Group. KM Lati- tude of Group. Longi- tude from Central Meridian. Date. Greenwich 1 'ivil Time. Where taken. Projected Area ol Arra for Group. KM Longi- tilde of '. . ,|, Mean Lati- tudeof OK '.] a from Central Mrridian Umbra. Whole Spot Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. ft. 1*260 4'"'4 5 '49 s 8-264 9'47> 10-156 I ! : > 4 12-440 '3 Croup 598. A regular spot Group 601 continued. 1881.,, Nov. 14-286 15-295 16-135 17-467 I I I Q 28 63 16 36 o o o o 0806 0709 o 3437 (343-6 343-6 o Iff ll'I 12-1 + *5'5 + 497) + 67-1 I 1 I (. 1 1 1 G I 1 U 18 18 4 43 37 35 44 34 3' *4 1 1 5 111 "Si 189 188 187 189 105 188 102 99 41 99 30 119 22 1 17 2 9 115 24 104 '9 97 '8 97 24 112 20 1 10 22 72 *4 97 20 77 e 40-9 40-9 40-9 4O-6 4'-4 416 4'"9 **? 41-6 *'$ 418 4*'3 o + 14-* + I 4 -| + 14-0 -M4-I + '4'3 + '4'4 4-14-6 + 14-8 + I4-5 + '4'5 + 13-9 + '3'9 -76, -62-3 -49'5 -33-6 -22 3 - 88 4- 4'* + 203 + 28-9 + 437 + 59'* + 74'3 Means 13 90 34'-*3 -11-84 ... Group 601 A. A double spot with a small companion. Nov. 7-293 I o 69 O 4' 15-7 + *4'S -*47 M.aus ... 21 101 4I-4S + 14-18 ... Means 4' 57 + *4'5 ... Group 599. A uniill i|>ot on November 9. New spots have broken out by November 10, and th Kroup lierumes a itraight .stream. Group 602. Two spots. Nov. 12*440 '3'547 G G 20 '7 11 '3 9 48 37 305-6 +14-7 305-5 +14-9 -37-0 -22-5 Nov. 9-475 10-156 11-284 12-440 '3'547 14-186 G I 1 G O I '3 49 63 58 36 *7 95 381 3'7 266 I 10 7 26 34 35 26 14 132 102 11-6 206 12-7 192 137 198 14-3 99 '3'9 + 197 + 18-9 + 19-1 + 19-0 + 18-8 + 18-8 - 8-5 O'l + '4'9 + 31-1 4-46-3 + 557 Means 1 1 43 305-55 +14-80 ... Group 603. A large regular spot with several attendants. The attendant* are few and small at tint, and are south of the large S)K>t They rapidly increase in size, and develop to a considerable distance in front of the chief spot Finally, all the attendant spots except the leader, which is the largest of them, disappear. Means 21 '35 '3-40 + 19-05 Group 600. Several (mall spots in a straight stream. Th gronp ilowly diminishes in size. Nov. 11-284 12-440 ' 3-547 14-286 15-295 16-135 17-467 18-471 19-501 20-536 21-4.50 22-293 I G G I 1 I G G G <; G I 7> 138 203 104 109 '99 *'3 ' 5 < 126 '*5 58 28 248 502 840 849 944 917 894 747 57' 5*7 183 IO2 109 124 '35 62 59 103 113 i; 116 73 5' 381 45 560 502 506 47 I 476 43* 390 464 357 186 286-7 287-3 288-3 288-6 289-0 289-3 290-0 289-5 290-5 190-1 289-9 286-5 + 16-5 + 16-1 4-157 + '5'4 + '5'4 + '57 + 16-0 + 16-2 + 16-1 + 16-0 + '57 + 17-0 -71-1 -55'3 -39'7 29-6 -.5-9 - 4'6 + 13-6 + 26-4 + 4"9 + 54'* + 66-0 + 737 Nov. 7-293 I o I -14 I 7 9-47; ii 36 10-156 1 12 11-2*4 1 12-440 G 8 98 *4 '33 93 120 60 5 21 7 o 4 97 35'"' +'6-2 -59-3 9 2 35'+ +'5'4 -46-3 79 350-9 +'5'5 -30-8 51 350-6 +15-2 -22-1 62 351-3 +17-4 - 6-5 31 3497 +16-4 + 7-1 Means . . . 6 69 350-83 + 16-02 1 Group 60 1. Two spot*, of which the following rapidly diminishes in size. The group ii not seen on November 15. Means ... 94 43* 288-81 + 15-98 ... Group 604. Two large irregular spots. 7-293 8-264 9>7; 10'! ;6 II : - .; 12-440 '3'547 I I ; I I . Q o 51 43 45 37 35 116 167 231 230 202 38 128 o o 37 26 24 '9 '9 205 '79 ,64 '44 no s 338-2 337-3 339"' 339'4 341-0 342-6 343-8 12-1 -12-5 121 -12-4 -n-6 -7*-2 60-4 -42-6 -33'3 -16-8 O'O 4-15-8 Nov. 13-547 I4-2S6 Q 1 3 *4 208 99 38 45 *57 182 18-9 28-7 -186 -27-9 + 60-9 -f7o-$ ".3 1 I'O 4* 220 28-80 28-25 ... PHOTO-HKLIOGRJLPHIC RESULTS, 1878-1881. 130 AREAS AND HELIOGRAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. Date. Girenwieh Civil Time. Where taken. Projected Area of Area for Group. Mean Longi- tude of Group. sr "F tnde of r fro . m , r, _ Central -""P- Meridian. D " t *-. . Where Greenwich . Civil Time. Uken - Projected Area of Area for Group. Mean Longi- tude of Group. Mean Lati- tude of Group. Longi- tude from Central Meridian TTK~ Whole Umbni - Spot. Umbra. Whole Spot * S,t Umbra. Whole Spot. Group 605. A regular spot, with two or three very mull attendants. Group 608. A small spot, seen only on the Greenwich photograph Indian. of November 16, not on the 1881. d NOT. I3'547 14-286 '5'295 6-135 17-467 18-472 G 1 G 9 15 *4 9 *7 44 I 9 63 7' 38 9 o II 14 5 57 58 53 45 4* 21 251-6 251-1 251-1 251-4 251-2 250-8 O + '37 + 23-5 + 22-9 + 22-8 + 22'9 + 23-1 o -76-4 -6--, 1881. d Nov. 16-394 G o 8 O 6 o 241-1 -20-3 O -49'+ -53-8 -42-5 -25-2 -12-3 O 6 241-1 -20-3 A small spot, which U spots ultimately c Group 609. joined by other spots to form a straight stream. The several oalesce to form a single spot. Cleans 8 46 aji-zo +23-15 Group 606. A number of small spots which soon arrange themselves in a straight stream, the leader of which is the largest member of the group. Nov. 20-536 G 21-450 G 22-293 I 23-504 G 24-284 25-298 I 26-438 G 17-550. G 28-454 G 9 26 21 6 29 3' '75 19 159 O 102 9 6 9 3 21 6 19 8 4 '7 10 5 2 5 2 4 15 18 95 84 54 39 \l 180-5 '79'9 '79'9 1817 181-9 180-0 '797 183-9 183-4 -14-1 -15-3 -'57 -15-8 -'57 -16-3 -16-5 -14-1 -13-9 -55'4 -44-0 -32-9 -15-1 - 4-6 4- 6-8 4-21-6 4-40-4 + 51-8 Nov. 15-295 16-135 17-467 18-47* 19-501 20-536 21-450 22-293 23-504 24-284 25-298 26-438 1 I G G G G G I G I o 32 120 "7 104 77 45 44 39 5 28 5 2 3' 136 588 522 477 309 293 189 283 205 367 318 o 33 86 7<> 56 4 24 *5 26 3 28 1 16 9' 150 418 312 T 161 ,56 1 06 "! i 5 6 I 8 * 692 224-6 231-2 233-2 233-4 235-1 236-4 236-0 2337 233-7 2337 233-5 234-5 + l6'3 + I7'6 + I7'8 fl7-9 + '7'9 4-18-0 + 17-6 -r-17'7 + 17-1 + 16-9 + 17-0 + 16-8 80-3 -627 -43'2 -297 -H'S 4- 0-5 + I2-I 4-20-9 + 36-9 +47-2 4-60-3 + 76> Means 6 4 18121 -15-27 Group 6 10. A small spot. Means 45 256 *33' 2 5 4-I7-38 ... Xov. 21*450 G o 6 o 3 209-2 + 16-1 -'47 Group 607. A large number of spots which soon arrange themselves to form a very fine straight stream. The first and last spots are the largest, the latter being very large on November 21, 22, and 23. Means ... ' ... o 3 209-2 4-16-1 Group 611. A small spot. Nov. 15-295 16-135 17-467 18-472 19-501 20-536 21-450 22-293 23-504 24-284 25-298 26-438 27-550 i I G G G G G I G I I .1 55 1 66 306 257 354 420 313 366 230 222 188 66 62 281 884 1 185 "52 '417 2207 1991 2203 53i 969 610 34 o 76 '47 2IC I 5 I8 7 2I 4 161 203 '4' 162 '97 '34 130 435 778 III 669 749 1125 1026 1227 932 719 643 693 228-6 222-7 221-4 221-O 221-0 221-2 220-5 220-8 220-8 22O-O 22O"2 219-7 219-3 4-11-2 4-10-8 4-11-2 4-H-5 4-H-5 4-II-3 4-10-9 4-10-8 4-H-2 4-10-6 4-10-6 4-10-1 4- 9-8 -76-3 -71-2 Xov. 21-450 G 22 o 13 198-8 4-22-0 -25-1 -55-0 -42-1 -28-6 -'47 - 3'4 4- 8-0 4-24-0 + 33-5 + 47' 4-61-6 +75'8 Means ... '3 198-8 4-22'Q Group 612. A small spot. Xov. 23-504 G 12 6 '95'9 + I3-2 - 0-9 Means 152 764 221-32 4-10-88 o 6 '95'9 4-I3-2 TAKN AT < iKJUWWlCH :A, AT MKLBOCKM, AJIU IS MAUUT1US. IX THI YEARS 1878 TO 1881. 131 IAKM 4nd Haliognphic P< Mitiofu of Groups of Son Spota continued. : | -.-: Aim for w ^ Am- c~p. tad* of ; '."'- ' . . iW ** tm\^ CtrU Time- ' - Am of Am far MM -;. 1 . a Uti ' '.:- .^. C:T. XhH Cmbf - teoc Ubtm. Z*J* . 'A . - I'abn. A 8,-oc Group 613. Two or tkrw null tfou do** tagrtiMT. Tk gr it aot MCB from Yvroibm jo to Group 6ll ! 1 1 1881. , jWo - G 411 284 , 15 44 16 48 19 4 22 90 S Me o o o Der I : - : I O O i O : . O 3 *-6 I 13 o 7 709 70-9 - ' 19-0 -I 9 I -18-8 -19-3 -73'* -607 + $'4 1881. Dee. 2404 3476 4166 I 63 4'5 *43 5 5 '35 5'* 477 25 129-8 131-0 -188 -'9-7 -'95 4-50-0 +644 MMIW 58 375 130-13 -19-33 up 619. A * W tf^M, T wW* At kMlcr i. by far th. hfHt M ... 6 21 7073 - '9 S 1 Group 614. A way faff* epot, wita mMaflr WTOTB! MM!] amMB. Dee. I 283 I 2-404 < , '5' 1 56 '7' 238 '7* 44 3' 12 '4* 684 1091 . .- 1305 1404 1186 97* 5*4 *59 109 40 '49 "4 too 98 '5' 35 '!} 4 4 35 94 679 796 681 756 674 589 368 '43 "4 23-0 23 1 24-6 *>* 25-0 26-0 264 26-4 *6"5 28-2 28-1 +241 + *4'8 -t-*5' + *5 ' + 25-0 -f*4'9 -7'3 -40-8 -jri -16-6 4-377 4-65-0 G 4 84 16 322 86 361 143 601 95 74* 93 73 Me 531 151 428 1-283 I '34 766 86 491 300 915 519 G 193 res i -j 3:; 6 180 624 96 332 : :'- I ' l86 482 104 269 G 106 307 67 194 94 3*9 *9 *43 8-280 I 62 282 60 271 87 44 60-6 61-1 6ro 605 60-3 59* 59* 59-0 59-6 595 59' 594 19-6 -19-9 -19-9 -19-3 -'9-7 -'95 19-6 -19-4 -'93 18-9 18-7 -8 1-8 -71-0 -56-8 -487 -338 -193 6-2 + 29 + '7'4 + 33 ' -T445 -r-70-6 3 '47 6 4166 5-280 6-4: - 302 8-280 9-291 10-331 11-228 12-280 Meaa* ... 86 49* 25-66 __ -.8-9 Group 6x0. PCThir 5. TW 6m * 9* 60-15 -19-39 Group 61 ;. Dec. 4166! I 5 280 I 6-430 G 7 62 7 3 5 35 75 ' 74"' 7*'4 4-xii 4-209 4-H- -t-45'9 G o 8 10 -13-5 Me*.-.- . ... 10 ~'3'5 ... Menu ... 2 3' 7387 4-21-00 Group 616. Tw *!! cad * !) of nry MM!! (. Grap 621. or. 28454 O II 44 34 29495 I 9 40 12 25 '- 4-24-6 + 25-0 i Dee, 9-191 10-331 11-228 12-280 13-2*1 '4454 I; I o 6 5 *3 4 o 28 -* 78 I! O '4 ll 10 3 2 - 66 128 5 84 49 3* 271-6 270-8 2699 269-2 4-26-4 -r26 4 + 26 2 -51-6 Me- - IO --: : . Group 617. * -*>-4 -10-8 + >4 20 12 I + icr$ -30-9 " - . M ~" 7 65 - - 132 AKEAS AND HELIOGRAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. Date. Greenwich Civil Time. Where taken. Projected Area of Area for Group. Mean Longi- tude of Group. Mean Lati- tude of Group. Longi- tude from Central Meridian Date. Greenwich Civil Time. Where taken. Projected Area of Area for Group. Mean Longi- tude of Group. Mean Lati- tude of Group. Longi- tude from Central Meridian. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. - ^p^ Group 62 z. A single spot. Group 627. A large regular spot, followed by a stream of small spots. l88i. d Dec. 10-331 11-228 12-280 13-281 H'454 I I I I G 15 '5 O o O 74 103 60 o '5 8 9 o 4 59 4 1 o 24 y 349'S 348-6 349-9 35>'3 o + 15-8 + 13-5 +13-3 + 13-8 o + 14-8 + 25-4 +4'5 + 70-6 l88l. ,, Dec. 11-228 12-280 13-281 H'454 15-282 16-349 17-458 18-475 19-504 20554 21-450 22-278 23-186 I I I G I 1 G G G G G I I 6 99 77 144 1 06 136 '45 182 no 106 141 35 3 78 346 670 830 726 733 729 712 533 475 439 238 "7 13 118 64 98 66 79 84 1 1 1 75 89 '54 55 10 166 409 579 572 450 427 421 434 365 397 476 377 365 o u 248-7 +260 248-I + 26^ 247-3 +26-6 247-8 +27M 246-8 +27-4 246-0 +27-7 246-2 +28-I 246-6 +27^ 246-4 +28-0 246-3 +27^ 2457 +28^ 245-4 +28-2 244-I +28-7 o -74'5 -6,-j -48-9 -32-9 23-0 - 0-8 Means ... 3 33 349-90 + 14-10 9 + 5-o + 18-9 + 32-2 + 45'9 + 57'' + 677 + 78-4 Group 623. Four spots on December 14. Only one remains on December 16. Dec. 14-454 15-282 16-349 17-458 G I I G 32 12 126 172 125 3i 20 9 o 79 129 >47 80 315-0 316-3 3i9'4 319-2 + 14-3 + 14-1 + 14-8 + 14-6 + 34-3 + 46-5 + 63-6 + 78-0 Means . . . 78 4,8 2 4 6-57 +27-53 Group 627A. A single spot. Means ... 7 109 317-48 + 14-45 Dec. 11-228 12-280 I I 32 16 o 33 12 262-5 262-8 Group 624. A very small spot. 14 4 -147 -46-6 Means . . o 23 262-65 -14-55 Dec. 14-454 G o 8 4 290-3 14-6 + 9-6 Group 628. A regular spot. 4 290-3 14-6 Dec. 12-280 13-281 14*454 15-282 16-349 17-458 18-475 19-504 20-554 21-450 22-278 I I G I I G G G G G I 12 31 29 44 56 32 4 1 5 15 39 o 62 I 10 175 212 228 I 5 8 20 5 ,6 5 68 58 '5 22 3' 21 27 31 '7 22 29 10 33 II I 110 126 '3' 126 83 I 10 96 46 4 2 16 236-6 2377 23 7 -8 238-0 238-0 238-6 238-8 239-0 239-0 239-4 238-8 + 17-' + 16-6 + 16-8 + 16-4 + 16-4 + 16-3 + 16-2 + 16-1 + I5-9 + 16-1 + 16-1 72-8 Group 625. A single spot. -58- 5 -42-9 -31-8 -17-8 - 2-6 + 1I-I +24-8 +38-6 + 50-8 + 6ri Dec. 9-291 10-331 11-228 12-280 13-281 H'454 15-282 16-349 I I I I I G I I 12 '3 19 22 6 15 o o 56 46 72 63 46 61 37 27 16 1 1 '3 '3 3 8 O o 73 40 5 37 25 32 20 16 282-7 282-3 282-4 282-0 282-0 281-6 281-7 281-3 + 1 6-6 + 16-6 + 16-5 + 16-6 + 16-3 + 167 + 16-6 + 16-3 -66-1 -52-7 -40-8 -27-4 -14-2 + 0-9 + 11-9 + 2 5-5 Means 22 9 1 238-34 + 16-36 ... Means ... 8 37 282-00 + 16-53 Group 629. A number of unstable spots. The group undergoes frequent and violent changes. Group 626. A single spot. Dec. 13-281 14+54 15-282 16-349 17-458 18-475 19-504 I G I I G G G 6 24 34 23 20 21 75 178 192 144 58 85 58 I I 23 28 '5 ii 1 1 o 154 186 155 90 3' 44 31 22O-7 220-0 219-6 221'2 223-I 224-8 223-6 + 10-7 + 11-2 + 1I'9 + 1I-9 + 10-2 + 12-2 + 13-2 -75-5 60-7 -47-1 Dec. 14-454 15-282 I6-349 G I I 9 6 28 46 47 5 3 '5 24 2 5 265-1 267-1 267-5 + 15-9 + 14-8 + '4'4 -15-6 - 27 + 11-7 3 2 2O'O - 29 + 9-4 Means ... 3 31 266-57 + 15-03 \T . i 4 99 221-86 + 1.1*1 TAKKS AT CiKEKNWICH, IN INI'IA, AT MKLBOURNR, AND IN MAURITIUS, IN THI YK.AKS 1878 TO 1881. 133 -.us and Heliographic Positions of Groupe of Sun Spots -continued. D.it. Greenwich finie. Where : ^,11. Arra of Area for Groti].. Mean Longi- il.l.- ! Group. M,,,, Uti tilde of Group. Longi- tude from r.-l,tl.l! Meridian. Datk Greenwich CiTil Time. Where taken. I'rojeeted Area of Ana for Group. Mean Longi- tude of OroDp. Mean Lati- tude of Group. 1. HIM tllJt (run Central Meridian - Umbra. Whole Spot. Umbra. Whole Spot Umbra. Whole Spot ( iroup 629. \. A single |~it. Group 634 euntinual. 1881. Dec. 29-118 30-166 31-262 Me I I I I 55 47 12 10 18 246 95 '43 55 4' 3* 30 IO 1 1 37 '43 128 117 63 84 107-4 108-6 1087 1 lO'O 109-9 o -26-7 26-0 -57 -25-5 -*5'4 O + '9'9 H-8 + 49'4 + 62 7 + 75'9 1881.,, 13-181 I o 15 o 48 o 10-3 u -(-16-8 + 74'' Means ... o 4 10-3 + 16-8 ... 1882. Group 630. ^^0 small ipot>. Jan. 1*17* 2-190 Mean* *5 "5 108-44 -26-18 ... 20-554 11-450 22'2-S G G I 7 i *5 33 3 7 34 3' 22 132-9 132-6 132-1 -19-8 2O-O 20-2 -67-5 56-0 -45-6 Group 635. A small faint spot, seen only as it is about to pass off at the Went limb. leans ... ... 3 29 132-53 2O'00 Dec. 28-205 I ii 3' 178-4 -f -7-1 + 78-8 Group 631. A number of small faint spots. Tb* group undergoes many changes, and U not seen on December 14. Means ... 3' 78-4 + 17-1 Group 636. A small faint spot. Dec. 22 2 -S 13-186 *4''57 25-184 26-200 I 1 I I I 4 3 o 8 o 56 "5 54 65 2 2 O 7 o 3' 9 o 45 7* 1877 187-1 189-2 187-6 -25-3 -2J-9 -*4'0 -*47 + 10-0 + 21-4 +49-9 + 61-6 Dec. 30-166 I o 12 it 21-6 + *S'S -52-1 o ii n-6 +*$$ ... Means ... 2 3" 187-90 -24-98 Group 637. Two small spots, with two or three very small markings near them. Group 632. Several very small faint spots in a straight stream. Dec. 31-262 1882. Jan. 1*172 I I 5 *3 22 3 >4 '5 82-2 81-8 +25-2 +25-1 + 22-9 + 34-5 Dec. 22-2-8 23-186 I I 5 *7 '5 3 o 16 8 51-9 151-6 + 16-9 + 16-1 -25-8 14-1 VI 2 5 82-00 + 5- + 26-6 -(-38-6 + 55'9 + 67-2 I'ec. 16-200 I 31 71 27-190 I 67 299 28-205 I 43 321 18 37 H 1 66 178 107-9 107-7 107-3 -27-1 -27-1 -26 7 -18-1 - 5'3 + 77 3' 5S 20-69 + '5'54 ... \ ROYAL OBSERVATORY, GREENWICH. LEDGERS OF AREAS AND POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM THE MEASUREMENT OF THK SOLAR PHOTOGRAPHS FOR EACH DAY IN THE YEARS 1882-1885. 136 AREAS AND HKLIOGRAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS AREAS AND HELIOGRAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FOR EACH DAY FROM THE MEASUREMENTS OF THE PHOTOGRAPHS TAKEN AT THE ROYAL OBSERVATORY, GREENWICH, AT DEHRA DON IN INDIA, AND AT THE ROYAL ALFRED OBSERVATORY, MAURITIUS, IN THE YEARS 1882 TO 1885. NOTE. The Greenwich Civil Time at which the photograph was taken is expressed by the month, day of the month (civil reckoning), and decimal of a day, reckoned from Greenwich Mean Midnight. The Projected Area of the Umbrae and Whole Spots is the area as it is measured on the photograph, uncorrected for the effect of foreshortening, and expressed in millionths of the Sun's apparent disk. The Column " Longitude from Central Meridian " gives the Mean Heliojjraphic longitude of the group, reckoned from the meridian passing through the centre of the Sun's disk at the moment of observation ; longitudes west of the centre being reckoned as positive. Dates for which the decimal of the day is not given indicate dates for which no photographic Eecord is at present available. In these cases the means have been taken of the areas and positions of the spot-groups as measured on the day immediately pre- ceding, and that immediately following the day for which the photograph is lacking. These interpolated values are enclosed in brackets, but are used in taking the final means for each spot-group. Date. Greenwich Civil Time. Projected Area of Area for Group. Umbra. Whole Spot. Umbra. Whole Spot. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Group 639. One faint spot when first seen on January i. A second, smaller and fainter, appears behind it on January 2. Both disappear before January 4. 1882. Jan. 1-172 2-190 3-512 Means o o 6 '4 22 2 5 18 20 '7 18 3407 339'7 340-2 340-20 -28-3 -28-8 -28-1 -28-40 -66-6 54'3 36-3 Group 640. Small faint spot. Jan. 4'i6g Means o o 3I3-4 3'3'4 -13-3 -54'5 Group 641. Small spot. Jan. 5 -2 1 7 6-166 Means 26 22 5 '5 10 H 30 50-3 497 -20-8 20-6 50-00 20-70 +56-3 + 68-I Date. Greenwich Cml Time. Projected Area of Umbra. Whole Spot. Area for Group. Umbra. Whole Spot. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Group 642. Several small spots in a straight line. The preceding spot rapidly increases in size until January 8. The rest of the group gradually disappears. 1882. Jan. 5-217 6-166 7 '44' 8-209 Means 5 46 105 39 9 37 47 J 259 43 9 3' 83 40 20 37 23 187 i 37' ! 265 94 188 8-5 io'6 "J 12-4 3'4 + 16-6 + 16-7 + 16-8 + 17-2 + 17-1 I 1-24 : + 16-88 + 14-5 + 29-0 + 577 + 74-9 Group 643. Two spots. These both diminish in size on the following days, the following spot disappearing before January 7, the preceding before January 8. Jan. 5-217 6- 1 66 7 5 o Means 75 47 4' 5 28 34 316-5 317-3 37'4 + 18-5 + 18-0 + 18-1 317 07 +18-20 -37'5 -24-3 - 7'4 Group 644. A single spot. Jan. 6' 1 66 Means 20 1 1 O'l o-i 17-7 17-7 + 18-5 TAKKN AT GllKKN \V1U1I, IN l.NMA, A.Nli IN MAl-KITIth, IN 1IIK > 137 ; rutihir Toeitious of Groups of Sun Spots amtinutd. wich Small s )>o Areaol Area for .ip. M...:. Longitui li- ef Group. v. . Latitude of Group. Longitude from Central Meridian. Date. Greenwich Civil Time. Projectd Aroaof Area for Oroup. M m Longitude of Group. Mean Latitude of Group. from Central MeridU.- Umbra, on .)ani Spot Dal M. Spot. Umbra. Whole Spot. Umbra. \Vl,.,!o Spot. tlroup 645. ary 8. A smaller one appears close to it on January 9. Group 650. Irregular spot, breaking up into three on Jainmry 16. The following jiortions are much smaller than the preceding, and disappear before January 10. 1882.,, m. 8-209 9'439 2 9 12 46 8 11 38 59 *37'' 1367 + 28-5 +27-9 -77-6 -61-8 1882.,, Jan. 13-493 14-187 42 46 60 45 34 23 16 26 4' 10 o 363 280 *37 259 185 '47 160 136 "4 4 ? 10 44 37 39 26 '9 12 ,3 33 12 O 382 231 ,56 '49 98 78 90 85 9* 56 28 o 186-3 186-4 187-2 187-7 188-1 188-2 187-9 188-2 188-5 189-1 188-2 + '57 + '5'5 + '57 + '5'8 + 5' + 15-1 + '5'3 + 15-0 + 4'9 + '5'5 + '57 O -58-7 -49-5 -35-4 22'2 - 8-8 + 4-6 -(-19-1 + 30-9 + 48-4 + 61-2 + 7''8 MI-.I ... 10 49 236-90 + 28-20 ... 15-201 16-166 (Iroup 646. Two small Faint spots. 17-158 18-163 19-288 20-162 21-470 22-396 23-267 9439 5 38 5 37 3557 -28-3 + 57-2 Means ...* 5 37 3557 -28-3 ... Means 22 3' 187-80 + '5'4 ... Group 647. A clutter of several irregular spots. The group changes very much on the follow- ing days. Group 651. Two small spots, of which the following is only seen on January 18. Jan. I3'493 14-187 15-201 l6*l66 '9 9 2 O I I I 40 '9 *9 '4 9 2 O 86 38 *3 61 287-5 289-1 283-9 282-5 +22-7 + 22-6 + 23-5 + 23-8 + 42-5 + 53-2 + 61-3 + 72-6 Jan. 18-163 19-288 20-162 21-470 9 o 9 8 *7 28 II 16 7 o 5 5 16 16 6 10 164-0 165-5 165-3 164-7 + 23-6 + 24-6 + 24-5 + 24-2 19-6 - 3'3 + 8-0 + 24-6 Mrans * 6 5* 285-75 + 3 '5 Means ... 4 12 164-88 + 24-23 ... Group 648. A dark -i>t with several faint spots following. The spot undergoes very great changes, diminishing in size to January 15, and then increasing again ; the leading spot ilivides into two portions on January iS, and one of the smaller frag- v increases iu size on January 19. Group 652. Two very faint small spots ; each divides into two parts on January 19. Jan. 19-288 20-162 o ii 29 o o 6 16 170-7 171-1 21-0 20-2 + ''9 + 13-8 Jan. 13-493 14-187 15-201 16166 17-158 18-163 19-288 20-162 46 35 '7 28 23 '7 16 20 94 129 9 I 1 06 '73 126 186 132 25 18 10 7 18 16 Z 9 7i 104 69 5* 64 123 "9 307 473 236-4 *37'3 237-2 237-7 238-4 238-9 *39' 2 237-9 + 15-' + 15-0 + '4'4 + '4-3 + '4'5 + '4'4 + 14'* + 14-2 8-6 + '"'4 + '4-6 Means ... ... 1 1 170-90 2O-6O ... + 27-8 + 4''5 + 55'3 + 7'4 + 80-6 Group 653. Small regular spot Jan. 19-288 20-162 21-470 22-396 23-267 24-592 25-258 26-284 27-162 28-432 29-179 9 '9 88 *7 36 122 43 21 27 52 4 95 198 364 274 303 356 166 256 209 234 72 '4 '9 61 it '9 62 22 12 16 4 '4 '45 i ,- 252 162 164 III 86 '4' 127 i - 1 7 97-4 97-4 97 ' 97-5 97-8 97'9 98-2 98-0 98-0 98-0 98-0 -17-2 -7'5 -17-1 -17-2 -17-2 ~'7'3 -17-6 -17-6 ~'7'4 i 8-0 -17-2 -7''4 -59'9 -43'' -30-4 -18-6 i-o + 8-0 + 21 3 + 32-8 + 49'5 + 594 Mi-ans ... ... 26 164 237-88 + '4'5' ... Group 649. Small faint spot, probably the same as Group 645. Jan. 13-493 14-187 I 5-201 7 o 4 32 3' 9 4 2 20 l l 234-4 +28-6 2349 +28-9 234-2 +29-1 io'6 I'O + 11-6 M'-ans ... 2 '5 234-50 +28-87 ... Mnans ... *7 '55 9775 -17-40 PHOTO-HELIOGRAPHIC RE.> 138 AREAS AND HELIOGRAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Group 654. Two small spots. They break up into several small fragments on January 23, but the parts of the preceding spot coalesce on January 24, and the following spot remains divided into two small portions. Group 658 continued. 1882.,, Jan. 29-179 3 3i Feb. i -444 2-162 3H87 4-191 5-188 5* No pho No pho 89 75 9 45 10 409 tograph. tograpli. 463 594 47' 327 101 30 (37 (45 5* 48 79 5 20 237 249 260 272 387 409 364 199 o 18-4 18-5 18-5 18-6 19-3 19-2 19-1 18-8 o + 16-4 + 16-3 + 16-3 + i6-z + 15*9 + 16-2 + 16-3 + 15-8 o 2O'2 - 5-8) + 8-6) + 23-0 + 33'i + 5'5 + 597 + 72-6 1882. Jan. 2 1 '470 22-396 23-267 24-592 25-258 26-284 24 9 *5 62 o 3 65 85 98 131 1 10 4 '9 6 '4 33 2 5 55 61 7 60 23 o 93-6 93'8 94-8 96-4 98-5 95'5 o -267 -28-2 -27-8 -27-0 -26-5 -26-8 o -46-5 -34-1 -21-6 - 2-5 + 8-3 + 18-8 Means 12 53 95-43 -27-17 Means 38 272 18-67 + 16-10 Group 655. Several very small spots. Only one fragment is left on January 23. Group 659. Three or four very small spots, arranged in a straight line. Jan. 22-396 23-267 12 36 9 7 o 20 6 143-1 145-2 + '5'9 + '5'9 + 15-2 + 28-8 Jan. 27-162 28-432 29-179 3 3' Feb. 1-444 2-162 10 32 3 No pho No pho 15 o 34 215 "23 tograph. tograph. 67 31 5 17 16 (17 ('9 20 18 114 69 75 82 88 83 57-8 59-0 60-4 61-5 62-6 63-7 64-1 + 10-8 + 9'7 + 9'8 + 97 + 9' 6 + 9'5 + 10-1 - 7'4 + 10-5 + 21-8 +37-2) +527) + 68-1 + 77'9 Means ... ... 4 13 144-15 + 15-90 Group 656. Two small spots ; both gradually diminish in size, and the following spot disappears before January 27. Means '3 76 61-30 + 9-89 ... Jan. 24-592 25-258 26-284 27-162 28-432 2O 9 12 3 I 66 66 55 '4 20 8 9 2 I 68 58 38 8 6 38-4 37'i 35'9 38-6 32-0 -25-2 -25-9 -25-9 -25-4 -26-2 60-5 -53'i 40-8 -26-6 -16-5 Group 660. Several very small spots, arranged in three close and small clusters. Jan. 29-179 3 4* 2 3 82-3 20-3 + 437 Means 8 36 36-40 -25-72 Means ... ... 2 30 82-3 20-3 Group 657. Small spot. Group 66 1. Two small spots. Jan. 25-258 26-284 27-162 28-432 29-179 o 4 9 10 2 18 '9 28 22 16 4 7 6 i 27 18 20 13 9 22-8 2 4 -6 25-0 25-2 257 + 16-9 + 17-4 + '7-3 + 17-1 + i7'4 -67-4 -52-1 40-2 Feb. i -444 2-162 i 3' 26 O 16 '4 6-4 8-0 - 9' 2 - 9-0 + io-8 + 21-8 -3'3 -12-9 Means ... O '5 7-20 9-10 ... M eans 4 '7 24-66 + 17-22 ... Group 662. A small spot, with a very small one near it on February i and 2. Group 658. Regular spot. Several small spots break out in its neighbourhood on January 27. Feb. i -444 3 1 2-162 29 3'487 4-19' ! 3 5-188 : 127 67 55 25 10 26 14 5 2 106 48 33 H 6 308-1 308-8 309-0 309-2 39'3 + '9'3 -47-5 + 19-1 -37'4 + 18-9 -197 + 18-3 10-2 + 187 + 3-1 Jan. 25-258 26-284 27-162 28-432 O 2O 36 75 97 198 3'5 406 o 21 28 47 180 206 2 5' 2 55 18-2 18-8 18-4 .18-2 + 15-8 + i5'6 + 16-1 + 16-3 72-0 -57'9 -46-8 -30-3 Means 9 4' 308-88 + 18-86 TAKEN AT GREENWICH, IN IXIJIA, AND IN MAURITIUS, IN THE YEARS 1882 TO 1885. 139 Areas an,:.. Greenwich Civil Projected Area of Area f->r Up. M. ,-. of Group. Mean La: of Group. Longitude from Central Meridian. Date. Greenwich CmlTime. Projected Area of Area for Group. KM Longitude of Group. Umbra. Umbra. Whi.lo Spot Umbra. Whole Spot Umbra. Whiill- Group 663. A small spot. Group 667. One spot, which slowly diminishes until its disappearance on February to. 1882.., |6l O 3 o 2 2 99 o + M-5 o -47-1 1882. d Feb. 4-191 -i 88 ' 5 4 No pho 29 22 10 16 7 tograph 7 O 6 3 o (0 o 84 27 9 1 1 4 4 4 241-3 2425 241-6 241-3 241-3 241-9 242-5 + 14-0 + '3'9 + '43 + 14-5 + '4'3 + '4'2 + 14-. O -78-. -637 -519 -37'3 Mi'im- ... 2 299-0 + i*-5 6-158 7'93 8-335 9 10-474 ' ':. y Mna! :p r i largest i!i< up 664. 1 faint spot when first seen on the East limb on February z. The ruases in size, expanding into a long line of spots, of whii-h largest. The group undergoes constant change, an>l is irtly after passing the central meridian. -23-5 - 8-9) + 5-8 Mans 1 20 24'77 + 14-18 ... Group 668. The middle spot disappears before February 7, and the other spots mewhat in size, the preceding spot becoming eventually the larger. : 162* 3-487 4-191 5-188 6'ljS 7-293 S'335 9 '0-474 "'474 12 >15 12 16 92 3' '95 5' 382 53 434 76 779 139 1083 No pho tograph. 98 659 59 39' 9+ o 12 '9 28 27 39 -5 (77 79 80 '3 67 '25 209 222 394 57 560 533 499 497 283-1 281-3 281-1 282-7 284-2 284-1 286-1 287-5 288-9 291-6 296-0 -'34 -'3'4 -13-6 -132 -13-6 -13-6 -S'S -13-9 -14-2 -14-1 -'37 -63, -47 '4 -38-3 -*3'S - 93 + 5'5 + 21-3 + 36-8) + 5*'* + 68-0 + 86-2 Three spot*, increase so Feb. 5-188 6-158 7-293 8-335 9 10-474 "'474 12-515 "3''43 HHS 2 '5'497 6 3' 47 No pho 90 90 4' II 20 8 55 136 275 238 tograph. 433 336 230 H7 '23 5' 1 1 6 22 28 (38 47 44 *4 7 '9 12 101 '39 204 142 183 223 '79 136 77 "3 74 33'2 234-5 *33'4 34"9 *35'4 235-9 236-7 238-6 *39-5 239-8 239> + 9'' + 8-5 + 8-4 + 7-8 + 7'9 + 7'9 + 7'8 + 7-6 + 7'9 + 7'4 + 7-' -73-0 -59-0 -45' 2 -29-9 - ' 5'4) - 0-8 + 13'' + 28-8 + 38-0 + 55 5 + 68-9 Means 4 337 286-05 -13-65 ... Group 665. A close cluster of very small spots, which gradually diminishes in size. Means 23 '43 236-48 + 7'95 ... Group 669. Two very small spots. Feb. 3-487 4-191 5-188 6-158 5 5 o 2 3* 30 *3 3' 8 3 2 '7 18 16 36 3497 350-7 35''5 357-2 -18-3 -'-'5 -17-2 1 C-J. + 21'0 + 3''3 +45-3 +63-7 Feb. 8-335 '9 10 250-5 22-0 -'4'3 Means ... ... O 10 250-5 22-0 ... ... 3 22 352 17-10 Group 670. A fine group, consisting of a number of spots arranged in three clusters in a straight line. The middle portion disappears before February 1 5. The group decreases after passing the central meridian, the preceding spot less rapidly than the others. Group 666. A small spot on February 4. The spot somewhat increases iu size on F< and 6, and several small spots form behind it. The group undergoes change, and is largest shortly after passing the central meridian. bruary 5 constant Feb. 10-474 "'474 12-515 '3''43 I4-452 '5'497 16-440 '7'5*3 18-493 19-578 20-264 48 152 227 96 215 "9 103 9 11 6 394 668 <* 3 630 835 707 5'7 3" 222 66 5 62 '34 '55 59 "7 62 56 54 37 17 9 544 613 57' 393 453 372 280 190 '59 7' 74 1 69 -9 169-1 169-6 169-5 170-2 171-4 171-9 '73'5 173-8 176-8 176-0 + 11-1 + 107 + 10-8 + 10-9 + 10-8 + 10-9 + 10-7 + 107 + 10-7 + 10-4 + 10-4 -66-8 -54'5 -40-2 -32-0 -14-1 + 0-9 + 13-8 + 30-5 + 427 + 60-0 + 6K-2 Feb. 4 ' 1 9 1 5-188 6-158 7-293 8-335 9 10-474 "474 12-515 O 6 5' '4 22 No pho '3 '5 o 30 '9 "7 97 '5' tograph. *'7 78 16 o 6 34 8 1 1 (10 8 1 1 44 '7 78 54 81 103 4 5* '4 251-1 252-8 252-4 259-2 258-9 259-2 259"4 2597 261-2 + 12-6 +13-* + 12-4 + 11-6 + 12-5 + 12-6 + 12-7 + 13-0 + 11-5 -68-3 -53'4 - 4 I-| -19-4 - 5 '9 + 8'4) + 227 + 36-1 + 5>"4 Moans ... ... 10 63 257-10 + 12-46 Means 69 338 171-97 + 10-74 140 AREAS AND HELIOGRAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. T Date. Greenwich Civil Time. Projected Area of t Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Group 671. Two small spots. Some very small spots appear between them on February iz. The members of the group increase in size until the central meridian is passed, and then diminish rapidly. Group 6 7 5 continued. 1882.* Feb. 16-440 >7-583 iS'493 2 II 5 4i 70 I 7 3 24 45 o 158-9 156-3 157-1 o + 21-7 +23- + 22'2 + 0-8 + I3-3 -f 26-0 1882. d Feb. ii'474 12-515 I3-I43 14-452 '5 '497 16-440 17-583 9 76 42 26 '7 22 25 278. 288 131 90 49 10 4 38 21 '4 IO 16 o '3 142 146 7' 54 35 10 o 207-2 207-5 2O6'2 2O6"I 2037 203-6 203-7 o 17-6 o 16-4 - 2 '3 + 47 + 2I"8 + 33' 2 + 45'5 + 607 -17-6 -i7'4 Means ... 1 21 157-38 + 22-60 -17-3 -17-3 -17-1 16-9 Group 676. Two small spots. Several small spots form round the following spot, and the preceding spot increases in size as the group approaches the W. limb. Means 15 67 205-43 -17-31 Feb. 14-452 15 - 497 16-440 I7-5.83 18-493 3' 5 2 40 53 1 1 77 305 35 153 33 17 36 38 95 30 44 21 I 325 263 94 212-3 213-7 215-0 215-8 210-7 + 1-8 + 2-2 + 2-2 + 2-3 + I-I + 28-0 + 43-2 + 56-9 + 72-8 + 79-6 Group 672. A small regular spot, followed by a number of small spots, which, however, dis- appear soon after the central meridian is passed. Feb. 12-515 '3-143 14-452 '5 "497 16-440 17-583 18-493 19-578 20-264 21 22-412 23-287 24-175 24 24 68 123 97 126 9' 69 33 No pho 44 20 '3 222 I 9 2 420 537 416 483 466 35 302 tograph. 202 102 39 39 29 5i 75 53 65 47 38 !9 (3' 43 28 36 424 251 322 3*9 226 247 238 191 I7S 185 '95 144 109 133-4 I33-I '34'9 I35-9 J37-3 137-8 I37-9 I37-9 136-5 I37-7 138-8 138-3 I37-9 -19-3 2O'O -76-4 -68-4 Means ... 43 187 213-50 + I"9 2 18-9 18-4 -18-8 -18-8 -187 -18-9 -18-7 18-4 -18-1 -18-6 -18-7 -49*4 -34-6 20-8 - 5'2 + 6-8 + 2I-I +28-7 +44-2) + 59-6 +70-4 +81-7 Group 677. An irregular spot, with several small spots near it. Feb. 15-497 16-440 17-583 18-493 19-578 20*264 2 I 22-412 23-28 7 24-'75 25-2I I 15 2 5 3i 29 35 13 No pho 82 6 13 9 45 98 IO2 144 88 158 tograph. 268 165 I 20 57 19 21 21 17 18 (26 45 4 9 8 54 82 68 83 46 81 114 H7 100 86 55 104-2 104-2 1 02 -4 101-8 102-4 101-5 101-9 IO2'2 ioro 101-8 101-9 -iS-3 -i 8-4 18-0 -I7-3 -17-7 -17-3 -I7-5 -177 -66-3 -53-9 40-6 -29-3 -I4-4 - 6-7 Means ... ... 43 234 136-72 -18-79 u 3 + 8-3) + 22-8 + 33'I + 45^ + 59'3 Group 673. A small spot. -17-6 -17-9 -iS-3 Feb. 13-143 o 1 I 7 2 34'4 + 15-9 + 32-9 Means ... 18 83 102-30 17-82 ... Means o 7 254-4 + 15-9 Group 678. Two small spots. Group 674. Two small spots. Feb. 15-497 16-440 I7-583 18-493 19-578 20-264 21 22-412 23-287 24-175 25-2II 13 8 4 7 o No pho 25 IO 6 o 87 4 2 49 26 49 S 2 tograph. 93 8.9 61 9 2 9 3 4 o (7 H 6 4 o 15 46 36 16 27 27 39 5 53 4 1 8 96-4 95-0 957 96-8 97-2 96-6 97-6 98-5 98-6 97-4 97'5 2O-I 2O'9 20'2 -I9-7 -19-3 ~74'I -63-. -47-3 -34-3 19-6 Feb. 13-143 3 17 2 9 199-0 + 5'' - 2-5 Means ... 2 9 199-0 + 5'i Group 675. A cluster of very small spots. if i. 19-6 -I 9 -9 2O'O 20-1 20-6 + 4-) + 19-1 + 3"7 + 41-2 + 54'9 Feb. 13-143 14-452 ,., I5-497 o o o 35 3' 1 1 o o o 29 21 6 157-0 156-8 158-2 + 23-0 + 2 3-3 + 22 "4,. -44-5 -27-5 -12-3 Means 4 32 97-03 -19-96 1AKKN Al C.IIKENWICll, IN I.N'I'IA, AND IN MAUltlTIUS, IN I1IK YKABB 1882 TO 1885. Ill Greenwich ("ivil Time. 1882.,, Fell. 16-440 Area of Areas ami B -of Groups of Sun Spots continued. Arm fr Group. M m Longituili- of Group Hi ua Latitude Up. Longitude from :ian DMi Greenwich Civil Timr. Projected Ana of Area Tor Group. v. a Ijoii^ituil<- ol d Mean Utitude of Group. Longitude ' : . Central Meridian. Umbra. \Vholr Spot Dbn Whole Spot Umbra. Whole !p ' Umbra. S|>t. Group 679. A small spot 196-8 Group 685. A spot which slowly divides into two portions about February 17. 4 '7 o t-20'9 o + 387 1882. d Feb. 22-411 23-287 *4->7S 25-211 26-522 *7'433 28-273 16 9 '4 13 '9 21 2O 5 43 85 105 130 88 4> 28 '9 I I 8 10 u 10 86 66 65 69 45 21 o U 60 5'9 5-8 6-3 6-8 e -13-0 -I2'4 -12-4 -12-5 O -74-3 -61 5 -50-2 -36-7 Mi-ans ... ... '7 196-8 + 20-9 Group 680. A small spot -12-7 -13-1 -13-2 -19-5 - 7'o + 4'S Feb. 18-493 I I 1 8 184-3 + '5'9 + 53'* MS ... '4 57 6-04 12-76 ... M ans ... I 8 184-3 + '5'9 Croup 68l. Two small spot*. Group 686. Two very small s|>ots. l-'i-b. 18-493 4 >7 2 10 164-3 -15-9 + 33-2 Feb. 27-433 8 7 56-6 + 21-8 +43'3 Mi-ans ... 2 10 164-3 -15-9 Mt-uiis ... ... 7 56-6 + 21-8 ... Group 682. A small spot. Group 687. A regular spot. Another spot breaks out to the north of it and some small spots appear before it on March i. The group undergoes several changes during its course. I-Vb. 18-493 o 8 10 69-7 + 20-8 -6, -4 Mi'.i!:- . O 10 69-7 -r-20'8 Feb. 27-433 28-273 Mnr. 1-444 *'397 3-610 4-544 5-211 6-201 7-291 8-187 9'3S 10-197 11-172 *5 39 55 98 '79 238 105 86 3 80 94 47 21 78 "4 273 500 862 982 617 7'* 622 668 498 260 '37 65 53 46 64 . 98 122 53 43 47 53 283 *37 292-6 293-1 293-0 *93'5 *947 294-9 295-2 *95'3 295-9 295-9 295-8 *949 293-3 -14-0 -'37 -'3'5 -12-8 -3'3 -12-4 -12-6 -12-4 127 12-1 -12-3 I2'l -I3-3 Group 683. Several small spots. The group is not seen on February 19. 807 -691 -53-8 40-8 -*37 in 2-1 + in + 26-1 + 37'9 + 5*-5 + 634 + 74-6 18-493 19578 20-264 21 22-412 23-287 4'75 25-21 1 o o o No pho '4 3 '5 3 12 4* ti;raph. 39 75 7 o o (4 8 2 8 2 3* o 39 36 3* 21 38 4 51-0 50-1 50-5 51-0 53 ' 50-6 54'* -'3'4 -.3-6 -136 -13-6 -3-6 -13-2 -12-8 80-1 -577 -43') -28-4 -14-8 - 5-6 + n-6 ais ... 3 3 51-50 -13-40 Mriins ... 62 3*7 *94'47 -12-86 Group 684. A small spot Croup 688. Two small spots. Feb. 22-412 23-287 H'7S 25-211 26-522 10 o o 1 26 10 10 10 6 10 o 2 *7 8 6 6 3 '7'5 8-3 18-3 187 18-3 -'49 -14-9 -14-9 -14-8 -146 61-9 -49-6 -37'9 -2J- 9 - T Feb. 28-273 Z 5 '3 353'S -i-j - 8-8 M-.-ans 2 10 18-22 14-82 MIMIIS ... "3 353'S -18-3 ... 142 AREAS AND HELIOGRAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Group 689. Two small spots. Group 693. A number of small spots in a straight line. The preceding spot increases in size. 1882. d Mar. 3-610 4"544 5-211 O 24 67 79 103 12 36 4' 54 o 299-8 300-0 300-6 + 8-3 + 8-1 + 9'' o -I 8-6 - 6-0 + 3'3 1882. Mar. 8-187 9-35 10-197 1 1-172 12-256 8 29 5' 36 10 49 119 210 I 7 6 IOO 5 18 38 33 17 28 75 152 164 15' o 268-2 268-0 266-9 268-8 2697 +23-6 + 23-2 + z.V4 + 23-0 + 23-5 o + 10-2 +H7 + 35'4 + 50-1 + 65-3 Means ... 4 44 300-13 + 8-50 ... Group 689*. A small spot. Means ... ! ... 22 114 268-32 + 23-34 Group 694. Two small spots. The preceding spot increases in size, and the following spot diminishes. Mar. 4-544 3 18 2 12 346-6 - 9'9 + 40-6 Means ... 2 12 346-6 - 9'9 Mar. 8-187 9-35 10-197 1 1-172 12-256 '3-55' 14-401 '5-57i 16-400 10 24 28 16 '9 20 '7 6 14 87 1 08 96 119 137 99 5 17 o 8 16 16 8 10 10 10 4 18 73 74 55 62 69 5' 29 1 1 1897 188-8 188-7 188-7 189-2 189-2 189-4 1897 190-3 -14-7 -14-3 -14-6 -13-9 - 14-3 14-6 -14-5 -H'7 -,4-8 -68-3 -54'5 -42-8 30-0 -15-2 + 1-8 + I3-3 + 29-0 + 40-6 Group 690. A small spot. Mar. 5-211 6'20I o 13 II "4 9 240-2 240-5 + '97 + 19-8 -57-1 -437 Means ... ... 12 240-35 + 1975 Means o 49 189-30 Group 691. A regular spot. -14-49 Group 695. A very small spot. It greatly increases in size, and other small spots appear behind it. Mar. 5-211 6'zoi 7-291 8-187 9"35 10-197 11-172 12-256 13-55I 14-401 15-571 16-400 39 37 55 75 95 92 ii i 93 140 '47 70 3i 81 205 383 453 553 54' 530 481 481 4'5 296 146 89 4i 4 2 47 5i 47 56 49 86 108 75 55 182 226 290 285 2 99 276 266 253 296 33 3<7 260 220'2 221-4 221-3 221'0 221-7 22I-3 221-8 221'9 222-3 222'4 222-7 223-3 + o-i - 0-4 - '5 - '9 - -5 - 0-7 - 0-7 - 0-6 - 0-4 - 0-4 - 0-4 - "3 -77-1 -62-8 -48-5 -37-0 -21-6 IO-2 + 3'i + I7'J + 34-9 + 46-3 + 62-0 + 73-6 Mar. 8-187 9-305 10-197 11-172 12-256 I3-55 1 14-401 15-571 16-400 17-613 o o 2 20 32 I 12 94 36 22 I I 7 3 17 79 198 407 348 134 149 25 I 13 18 59 5 21 15 10 20 33 14 5' 109 212 185 79 97 22 I79H 181-9 183-1 183-8 185-8 187-2 187-5 187-5 I87-5 187-3 + 8-5 + 9-i + 8-7 + 99 + 9'4 + 9'i + 9'4 + 9-8 + 10-0 + IO-O -78-6 6 1 -4 -48-4 -34'9 -18-6 O - 2 + II'4 + 26-8 + 37'8 + 53-6 Means ... 62 271 221-78 0-48 ... Means 19 82 185-10 + 9-39 Group 692. A number of small spots. The group undergoes constant change. Group 696. Two very small spots. Mar. 8-187 9-305 10-197 11-172 4 18 '5 4 48 81 67 66 21 I I I I 4 25 49 49 66 2777 278-8 278-1 2 79-5 -15-3 -'5-' -14-6 -i5-3 + '97 + 35'5 +46-6 + 60-8 Mar. 9-305 O i? 9 270-5 - 9-8 + 27-2 Means ... ... 12 47 278-53 15-08 ... Means ... 9 270-5 - 9-8 ... TAKK.N AT GltBEN W1CH, IN Isi'IA, ASH IS MAURITIUS, IS TUB YKARS 1882 TO 1885. 143 A .MS uml Helio-r.ii.lii. Positions of Groups of Sun Spots continued. Date. Gmuwich Time. Projected Area of Area for Group. MB I.onptii.1. of Group. Mean Latitude of Grn'ip. Longitnd from Central Meridian. Date. Greenwich Time. Projected Area of Area for Group. M. Longitude of Gi.mp. Mwn Lad of Gump Longitadt from Central M. :,:, Umbra. Whole Spot Umbra. Whole Bfi* Umbra. Whole Spot. Umbra. Whole Spot Group 697. A numlMT of small spots arranged in two straight lines at right angles to the Sun's i March 10. The group alters iu shape, forming one straight line nearly parallel to the Sun's K<|imt<>r on March 1 1. The first ami hut spots are then th.' largest. The intermediate spots disappear on March 11. Qroup 701. Two or three very small spots. 1882. Mar. 14-401 '5'57I 16-400 O 5 o *7 17 4 o 3 *5 1 1 9 o 124-0 124-9 1143 o + >7'4 + 7'4 + 17-8 -51-1 -35-8 -*5'4 18" Mar. 10-197 11-172 12-256 3'55' 14-401 'V57' 28 62 67 93 86 o 148 543 605 393 265 5 '4 35 44 89 129 76 304 400 J7 1 406 4* o *43'4 *447 *45'3 246-3 248-0 2 4 fl o 17'l O + 11-9 + 6-o + 40-9 + 58-9 + 7' - 9 + 81-4 -16-5 -'57 Means ... ... i '5 1 14-40 + '7'S3 ... 15-1 -14-6 16-0 Group 702. r spot, with several small spots close U-liiud it. One of these finally early as large as the first spot. Moans 5* 167 *44'97 -15-85 ... A large regula becomes n >roup 698. Two very small spots. Mar. i >'57i 1 6-400 17-613 18-488 19-517 20*400 21-476 22-416 23-495 *4'3S' 25-418 26-497 27-398 28-223 21 55 70 126 116 '53 219 228 168 119' 191 10! 57 12 86 196 303 463 5'* 75* 1 164 9" 888 768 !! 53 694 317 146 75 89 66 9* 71 86 "4 118 9' 70 '33 IOI 81 3' 3'* 3*5 282 34* 3'S 4*o 610 473 482 45 I 95 64* 445 380 76-6 75- 76-0 757 75'5 747 73'4 74-8 74'5 737 74'' 74-2 75-0 74-6 -22-8 -22-8 -13-1 -23-0 12-9 -84-1 -73'9 -577 --(6-5 -33'i -22-3 - 9'4 -1- 4'4 + 18-3 + 28-7 + 43-3 + 576 + 70J 4-8o-6 Mar. 10-197 1 1 6 219-3 - 8-8 12-2 -'$ -22-3 -22-4 *2'O -21-6 -21-6 20-8 20-9 1I-I Means 6 219-3 - 8-8 Group 699. A small regular spot, followed by seTeral smaller snots. It becomes a large irregular cluster of many spots on March 17, quite unlike its appearance on Mareh 16. Means ... 87 434 74-90 -22 I 3 -Mar. 1 1-172 11156 '3 55' 14401 15*571 16-400 17-613 18-488 19-517 20-400 21-476 22-416 o 4 62 7 33 45 5' 5 62 *7 5 59 89 203 3'9 292 268 363 3'S 226 288 140 4* o 18 5 4 '9 *4 26 26 '4 4 22 5 '79 '< 5 167 218 166 '43 1-6 ,65 129 ,85 "3 45 136-5 136-0 34'7 133-1 134-0 133-6 '35'5 '357 135-2 '34'9 34-4 133-6 16-9 -17-6 -18-2 -17-8 -18-3 -18-3 -19 8 -19-2 -18-9 -18-6 -18-6 -177 -82-2 -68-4 -5*7 -43-0 -26-7 -16-1 + 1-8 + '3'5 + 26-6 + 37'9 + 5 ''6 + 63-2 Group 703. Two spots. These spots become much larger, and seven! smaller spots appear between and around them on March 1 1 and following days. Mar. 19-517 20-400 21-476 22-416 2 3'49S *4'35' 25-418 '9 43 130 224 ,64 39 3* "9 353 734 939 762 292 38 10 22 7* '47 140 46 69 60 1 80 409 612 657 359 300 108-3 108-0 108-7 110-5 I I 1-0 111-4 109-8 - 5'6 - S' - 5-6 - 5'3 - 5'4 - 5'3 - 5'4 - 0-3 + 110 -M5'9 + 40-1 -I-C4-8 +66-4 + 79 MS ... ... *4 '5 '3477 -'8'33 Mi-ana ... ... 72 368 109-67 - 5'?? Group 700. A small spot. Group 704. Two spots, and two or three small markings near them. + 577 + 0-5 Mar. 20-400 21-476 56 18 182 9* 61 35 202 '74 '547 '533 + 20-6 + 21-8 Mar. 13-551 o '3 8 156-1 + 117 -3' 3 Means 8 156-1 + 117 Means ... 48 188 154-00 + 11-20 144 AREAS AND HELIOGRAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. .Mean Latitude of Group. Longitude from Central .Meridian. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Group 705. A large regular spot, with some small companions. Group 709. Two spots, which rapidly increase up to March 25. Other small spots appear near them on March Z5 and following days. 1882. d Mar. 21-476 22*416 23 - 495 25-418 26-497 27-398 28-223 29-164 30-386 3I-437 Apr. 1-410 2-565 20 74 119 68 '59 1 60 156 76 80 IOO '3 1 75 22 439 55 542 745 643 650 551 559 554 498 347 85 60 103 IOO 46 89 81 78 38 44 65 i ii 92 60 6,5 462 364 421 329 324 279 301 354 4'5 437 234 I "2 0-6 2-2 2-6 2'4 3 -0 3'3 3'5 3 '4 4-0 5-0 6-0 3-8 o -10-3 -10-3 -10-7 1O'2 10-4 io-o 10-2 lO'I -10-3 -10-3 10-4 -10-5 - 9-6 -81-6 -69-8 -54-0 28-4 -13-4 + 9 ;7 +38-6 + 53-5 ~\~ 6$ '3 -j- 80*4. 1882.,, Mar. 23-495 *4'3S' 25-418 26-497 27-398 28-223 29-164 30-386 12 71 110 9 1 42 32 o 36 120 210 577 522 37 192 23 7 7 40 69 70 42 5 '9 63 7 36" 400 374 306 172 50-1 49'5 49-8 50-7 51-0 51-9 SI'S 50-1 o + 12-8 + I2'2 + 11-7 + II-2 + io-8 + 10-3 - 6-1 + 4'5 + 19-0 + 34-I + 46-3 + 58-1 + 70-1 + 84-7 Means 36 227 50-58 : +II-48 ... Group 710. A small spot, not detected on March 26, 27, and 28. Means ... ... 74 377 ris 10-25 ... Mar. 25-418 26-497 27-398 28-223 29-164 30-386 31-437 i 5 o o o o o 18 o o 22 9 10 9 o o o o o 10 o o 7 10 '9 20'2 2I- 9 22- 9 + 20-6 + 20-3 + 2I-I + 2TI io'6 + 40-5 + 57-5 + 71-2 Group 706. A very small spot. Mar. 22-416 18 o 9 767 14-0 + 6-3 Means I 8 21-93 + 20-78 Means ... ... 9 767 -14-0 Group 711. A very small spot on March 26 and 27. The spot shows a large proper motion on the following days, and several smaller spots appear near it. Group 707. A small spot. Mar. 26-497 28-223 29-164 30-386 31-437 Apr. 1-410 2-565 3-57I 4-486 2 2 O O O 8 8 o 3 o 1 1 7 '4 9 7 29 59 4 2 2 O O o 4 4 o 3 10 5 9 5 3 9 16 40 13 6 3177 3I8 + 32O-2 319-6 318-7 321-7 324-8 326-1 326-4 326-3 -12-5 -12-8 -13-8 -12-8 -58-9 -33-6 -21-8 - 67 + I0'2 + 26'! + 427 + 68-3 Mar. 22-416 23'495 24-351 25-418 26-497 6 16 o 3 o 20 62 18 17 8 3 8 o 2 12 33 9 9 5 40-3 41-0 41-6 41-5 20-1 20*9 -20-5 20'6 20'6 30-1 -15-2 - 3'5 + io-8 Means ... ... 3 H 41-18 -20-54 ... 1 1-8 10-8 10-5 Group 708. A small spot. A second appears on March 24. -10-5 Means ... 2 12 321-99 -11-99 Group 712. Two or three very small spots. Mar. 23-495 24-351 25-418 26-497 17 23 5 3' 61 46 61 ii ii 28 '4 20 47 55 172 95-3 95-5 97-3 97-9 -15-7 -15-8 14-6 -14-7 + 39'i + 5'5 +66-5 + 81-3 Mar. 27-398 5 18 3 10 19-5 +10-6 + .4-8 Means ... 16 74 96-50 15-20 Means 3 IO 19-5 +10-6 .., TAKEN A i GREENWICH, IN INHA, ASI> IN .M IN IIIK YKAKS 18*- TO 1880. 145 u* ami lli'lio-r.ii'hir l'M>iti.nis of tiu from Central Meridian Date. Greenwich Civil Time. Projected Area of Arm for Group. Mean Longitude of Group. HMD Latitude of Group. Longitiic Central Meridian. Umbra. Whole Umbra. Whole S|K,t. Umbra. Whole pofc Umbra. |wh 1e | Spot. i;roup 713. A amall regular apot. ( ; roup 7 1 6 continued. 1882.,, Apr. 8-397 9474 10-146 '3 o 3 *9 >7 1 1 7 3 17 1 1 9 o *33'5 *333 *33'4 18-9 19-0 18-9 O + *7'i 4-41-1 4-50-1 1881.., Mar. : . 3'3 S() 3'-437 r. 1-410 1-565 4486 5-562 O "3 28 26 4' 21 2O 8 33 78 "4 IK, 104 67 26 16 3 Ifl 26 12 12 5 77 9 i 96 83 64 54 40 '7 o 168-6 167-4 167-2 -3 267-0 166-8 266-5 ;66- 3 o + '5-4 + 25-1 4-14-9 4-*5' + *5'3 + 25-4 4-26-0 + *5'9 -71-8 58-0 -I4-3 -31-4 -16-4 - 3'3 + 8-5 4-22-5 Means ... ... 8 3' 133-24 -19-18 ... Group 717. Two amall gpots on April i. Other apots appear on the following days, and the group increase* in aixe, and forma a long atrmight line of spots, of which the preceding spot is the largest. Means M 65 167-14 4-25-38 (Iruup 714. Several until spots close together. Apr. 1-410 1-565 3'57' 4-486 5-56* 6-569 7-336 8-397 9'474 10*146 o 22 83 7 6 64 IOO 70 4 9 '7 3' 65 400 479 5" 47i 300 62 3* 16 5* 44 35 58 44 1 1 9 21 18 4 ISO *73 MM 269 191 49 3' 1367 131-4 131-5 131-3 *33'4 33'3 233-1 134-9 237-9 138-0 + 19-0 + 9'4 + 18-9 + 9'3 + 198 + '9'3 + 19-5 4-19-0 4-18-1 4-18-3 62-0 -51-0 -38-6 -167 -10-4 + 27 4-127 4-28-5 +457 + 547 Mar. 30-386 31-43- Apr. 1-410 2-565 3-571 4-486 8 23 O o 17 3 78 79 37 28 52 10 5 '3 o '9 7 43 44 *3 21 57 20 328-5 3*7-4 328-1 326-9 329-7 331-0 + I5-9 + I5-3 4-15-' + '5'5 + '4'3 + H-3 + 3-' + 15-9 + 29-4 + 43-5 4-59-6 4-73-0 Means ... ... 27 4S *34''5 4-19-06 M...ana ... ... 7 35 328-60 4-15-07 Group 7 1 8. A regular spot. Group 715. A Bmall regular spot. Apr. 1-410 2-565 3'57 4-486 5-562 6569 7-336 8-397 9>74 10-146 11-502 12-131 '3"'53 16 18 35 61 77 67 74 49 4" H *5 12 2 73 '93 192 297 284 337 3'7 293 235 161 148 69 35 3 28 25 37 4' 34 37 16 25 16 *S 16 6 140 191 '39 181 5* 171 161 156 142 1 10 148 94 in 224-0 223-9 224-2 224-0 114-7 225-1 215-1 215-4 215-4 225-2 225-2 225-4 224-9 o-i o-i 4- o-i 4- 0-6 + 1-1 + 0-8 + '3 + ''5 + 17 + '7 + *'o + 2-1 + 2-5 -747 -$9'5 -45-9 -34-0 -19-1 - 5'5 + 47 4-19-0 + 33'* + 4" 9 + 59'8 4-68-3 4-81-3 Mar. 30-386 3'-437 Apr. 1-410 2-565 3-571 4-486 5 12 8 o 3 o *3 43 *3 34 '9 n 8 1 1 6 o 2 O 38 4* 16 20 10 6 251-8 252-0 252-5 252-4 252-5 252-3 -'4'4 -'44 -'4'3 -14-2 -'4-4 ~'4'3 -73-6 -59-5 -46-2 -31-0 -17-6 - 5'7 Means ... 5 22 252-25 -'4'33 ... Group 7 1 6. Two spots. The following and smaller ipot diapi>eari before April 8. Means ... ... *7 '47 224-81 4- 1-17 Group 719. A very small spot. Apr. 1-410 2-565 3'57 4-486 5-562 6-569 7-336 3 o 30 44 '7 12 IO 16 49 "5 101 68 38 58 4 '9 *5 9 6 5 18 4 74 11 '9 3 233'9 131-6 233-2 232-9 *33'5 233-8 233-3 -97 20- 1 19-8 19-6 18-9 -64-8 -51-8 36-9 -25-1 -10-3 + Apr. 4-486 2 4 i 3 108-9 4- 6-0 -49-1 18-9 3 2 4-129 Means ... i 3 108-9 + 6-0 ... PHOTO-HEUOORAPHIC RESULTS, 1882-1885 146 AREAS AND HELIOGRAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Umbra. Whole Spot. Umbra. Whole Snot. Umbra. Whole Spot. Umbra. Whole Spot. Group 720. A small regular spot. Group 724. A small spot. 1882.,, Apr. 5-562 6 569 7-336 8-397 9-474 10-146 1 1-502 12-131 I3-153 o 8 9 " 8 o '3 o 18 28 35 29 17 1 1 48 17 7 O 5 5 5 4 o 9 12 16 '9 '5 9 6 3i '3 8 o 199-6 2OI 'I 2O2'3 204-0 205-2 205-3 206-1 206-5 206-9 o -10-4 -10-3 - 9'3 - 9-2 - 9'3 - 8-9 - 8-2 - 7'9 - 7'3 o -44-2 1882.,, Apr. 8-397 4 '5 2 O 8 , I75H -I4- 9 o -31-0 2 9 5 -18-1 - 2 '4 + '3" 4-22'O 4-40-7 +49'4 + 63-3 Means 2 8 175-4 -I4-9 Group 725. A somewhat scattered group of small spots. Means ... 3 H 204-1 1 - 8-98 Apr. 9-474 10-146 1 1-502 12-131 '3''53 14-462 3 2 62 9 o 49 39 5 284 116 188 1 80 6 3 47 6 2 4 69 58 213 75 105 92 118-4 Il8'2 116-8 117-0 117-5 117-2 Group 721. Several very small spots in a straight line, of which the preceding spot is the largest. The following spots disappear before April 10. - 8-6 - 9' 1 - 9' 2 - 9- - 87 73 8 -65-, -48-6 40-1 -26-1 - 9'' Apr. 6-569 7-336 8-J97 9^74 10-146 1 1 -502 47 47 '3 10 8 26 12- "47 I IO 37 18 30 Z7 6 4 20 8 4 82 59 20 1 I 186-9 186-5 iSS-g 189-7 '9'"3 191-4 + 16-6 + 16-1 + '5"9 + '59 + 16-1 + 15-4 -43'7 -33'9 -i7-5 - 2-5 4- 8-0 4-26-0 Means ... '4 102 117-52 - 8-88 Group 716. Three small spots when first seen on E. limb. The group undergoes very great and violent changes, and increases in size very rapidly indeed. The most striking changes occur on April 16, 17, 18, and 19. Means ... ... 12 46 189-12 + 16-00 Group 722. A regular spot. Apr. 10-146 1 1-502 12-131 I3-I53 14-462 15-283 16-546 I7-587 18-542 19-165 20-421 21-409 22-164 23-512 o 32 27 3' 64 45 45 396 445 275 412 457 149 59 22 263 I6 5 2 9 I 436 311 298 '693 2510 2063 2517 2404 H33 375 o 48 29 25 4 25 2 4 204 244 1 60 294 436 202 173 89 4'7 186 226 270 219 156 880 '37' 1207 1808 2258 .487 1094 99'3 93-0 93-0 94-7 92-9 927 93-2 92-5 92-3 92-9 92-6 92-3 92-6 87-9 -21-3 -20-5 20-8 -21-4 21-1 21'2 19-6 -18-3 -18-0 -17-5 -17-7 -17-5 -17-2 -18-2 84-0 -72-4 64-1 -48-9 -33'4 -22-8 - 57 + 7'4 4-19-9 4-287 + 45' + 577 4-68-0 4-81-1 Apr. 6-569 7-336 S'397 9^74 10-146 11-502 12-131 '3-153 14-462 15-283 16-546 17-587 17 40 68 69 38 68 46 34 67 26 2 4 o 118 130 236 2 54 266 320 296 251 257 178 146 "5 27 48 55 45 2 3 38 26 20 46 21 30 I 9 2 '54 I 9 I 1 66 161 179 1 66 146 i75 141 178 285 162-3 159-8 161-2 161-2 161-4 1 60-6 1607 160-6 160-3 160-4 160-5 160-3 + 2O'I + 20-4 + 20-6 + 20-6 4-20-9 + 20-9 4-20-9 + 21'0 4-21-1 4-2O"6 + 2I-I 4-21-1 -68-3 -60-6 -45' 2 -31-0 2 I '9 - 4-8 4- 3-6 4-J/-0 + 34' + 44 '9 + 61-6 + 75-2 ... 136 833 92-99 -19-31 Means 3 2 178 160-78 4-20-78 Group 727. A small spot. Group 723. A small spot on April 7. A second is seen near the first on April 8. Apr. 7-336 8-397 4 '5 '4 73 2 8 8 37 203-4 202-9 16-0 16-0 -17-0 - 3'5 Apr. 1 1-502 9 23 5 4 182-2 4-19-8 4-16-8 Means 5 23 203-15 16-00 Monns 5 '4 182-2 + 19-8 TAKEN AT GBKENWK II, IN INDIA, ASH IN .MAUKITll>, IS THE YKAliS 1882 TO 1885. 147 us ami Holi(^'r.i]iliic Positions of Groups of Sun Spots contin Mean Latitude of Group. ]>.\i.. Grec Civil Time. Projected Area ( Area for Group. Mean Longitude tilUp. M Latitude of Group. Longitude from Central Meridian. Date. Greenwich Tune. > n T nt m ti 1 I"" 1 I'M Am of Area for Group. Mean Longitu.lr of Group. I. i..".". ! from Central Meridiau. Umbra. Umbra. ^" Bpat Group 728. pril 1 1 and n. ' i| ril 1 1 and 12. U-ing tlie largest. Umbra. Whole Sit. Umbra. Whole pat A V-shaped KT inci line, the f 1882.., Apr. 11-502 12-131 1 ^153 14-462 '5'*83 16-546 7 18-54: 19 165 inp of sp in size 1 rst and 1 '27 101 81 '5* 53 '*3 192 47 ii ots on A win-ten t i,t -j.,,ts 53 594 767 878 642 1057 970 4 ss "7 'he group changes very rapidly, On April 13 it forms a straight Group 731 cuittinut'l. 1882.,, Apr. 19-165 20-421 21-409 3 17 o 54 74 28 2 '9 4' 86 70 o 1 1 1-2 112-4 II3-9 -19-9 -19-2 -18-7 O +47-o + 64-8 + 79'3 7' 53 45 8s 3' 89 190 77 to *94 3'4 393 47* 3 i 3 769 94 795 3 o 142-2 142-4 143-0 143-1 144-0 '44-5 144-0 >45'4 '39'9 -18-6 -18-6 -18-3 -18-2 -18-6 1 8-0 -17-8 -'77 -17-1 o 2)2 -'47 0-6 + 16-8 + 28-5 +45-6 + 58-9 + 73-0 + 757 Mi-iinB ... 4 34 110-43 -19-99 ... Group 732. A small spot Apr. 14-462 15-283 16-546 17-587 18-542 8 '3 o '5 o 76 58 4* 35 12 7 9 8 O 65 40 *5 1 71-6 72-9 7*'4 72-2 71-9 -11-4 -21-4 22'O -11-9 -ii-8 ~ 53 1 -42-6 -26-5 au 73 508 '43-17 18-10 ... IZ 9 - 0-5 Group 729. A Tcry Urge spot, with three or four spots following it The great spot undergoes constant change, especially after passing the central nieriilian. Means ... ... 5 3' 71-40 2170 ... Group 73 3. Two small spots. The group increases in size on April 16, 17, and 18, and forms an irregular gronp of small spots. On the following days all but two of these spots disappear. Apr. i .ri>3 14-462 1^-283 16-546 17-587 18-542 19-165 20-42 I 21-409 22-164 23-512 *4'54<5 25-166 69 3'7 236 |7> 663 846 *79 593 688 *37 *75 216 4 602 2OO2 "75 3208 3388 3693 3635 3343 3388 1960 1846 1176 S3' 130 340 191 *39 34 465 '5* 339 428 165 264 319 90 1138 2123 '757 2059 1963 2031 1988 1908 2109 '37* '771 '734 jit 67-8 65-5 66-1 66-3 65-3 647 64-6 64-2 64-0 64-0 3 ' 5 63-4 62-4 -27-8 -2S-, -28-1 -28-4 -287 -28-6 -28-5 -28-8 -287 -28-5 -28-4 -28-6 -28-6 -75-8 -60-8 -49'4 -32-6 -19-8 - 77 + 0-4 + 16-6 + *9'4 + 39'4 + 567 + 70-2 +77 '4 Apr. 15-283 16-546 17-587 18-542 19-165 20-421 21-409 22-164 23-512 24-546 7 4' 85 84 5 2 37 8 3 o 4* "94 3'7 354 '45 *44 211 77 *3 3 6 *7 47 44 *7 21 5 12 O A '77 .83 74 '*7 *5 49 21 4 59'5 59'9 60-4 615 62-4 6r8 62-2 617 63-5 64-5 -.3-6 -12-9 -.3-8 -13-8 -35 -3'3 -13 2 -'37 -560 -39-0 -*47 10-9 - 1-8 + H'* + 27-6 + 37'' + 567 + 7'"3 MS ... 27O 744 6475 -18-45 ... -12-8 .Means ... 9 9* 61-74 ... Group 730. A small spot -13-39 Group 734. A regular spot, with a small companion. Apr. 14-462 18 o 17 178-9 + 20-8 + 52-6 Apr. 16-546 17-587 18-542 19 165 20-421 21-409 22-164 23 512 24-546 25-166 *6'353 27 161 10 37 68 37 55 75 4' 69 52 12 22 4 7 160 380 3 '1 326 444 300 35* *45 158 80 102 *7 46 57 *7 32 40 21 38 3' 8 20 5 186 200 3*3 **4 189 *37 57 191 '49 109 74 '34 II'O 20-6 20-6 21-4 22'0 227 *3'3 24-0 *4'3 25-1 *4'5 *47 + 107 + 10-9 + 10-6 + 10-9 + 107 + 1-4 + n- 4 + 1 1 -6 + 11-4 + 12-1 + H-7 + i>7 -77-9 -64-5 - 1 -8 ... o 17 178-9 + 20-8 Group 731. A disturbed arem, in which small spots appear and disappear at irregular intervals. No BpoU are Men uu April 17. >' -42-8 -2 5 -6 -11-9 - '3 + 17'* + 31-1 +40-1 + 55'3 + 66-1 Apr. 14-462 15-283 16-546 T587 '8 54* 8 2 O O 60 *7 10 35 5 o 3 33 4 5 22 107-5 108-4 log-s 109-8 -21-9 -21 j -17-9 20-8 -18-8 - 7'' + 109 + 374 Means ... *9 iSi 12-85 : -f n'*6 148 AREAS AND HELIOGRAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. Date. Greenwich Civil Time. Projected Area of Ai-eii for Group. Mean Longitude of Group. Jleau Latitude of Group. Longitude from Central Meridian. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Group 735. A regular spot. Group 739. Several very small spots. 1882. d Apr. 17-587 18-542 19-165 20-421 2 I -409 22-164 23-512 24-546 25-166 26-353 27-l6l 28-550 38 33 46 96 52 64 63 43 32 ^7 47 72 150 '54 259 339 296 364 307 259 257 244 178 O 47 3" 30 54 27 32 32 23 20 2O 59 203 187 '44 172 '93 '57 183 158 141 '63 182 225 o 4-4 5-6 6-3 6-7 6-6 6-9 6-9 6-9 77 6-8 6-8 7'3 o -i 1-6 -11-3 I 1'2 I PI IO-2 o -80-7 -66-8 -57'9 -40-9 -28-0 1882. Apr. 23-512 24-546 25-166 26-353 27-161 3 3 3 2 20 63 32 27 20 I '7 2' I I i 35 20 21 2 4 o ,6-5 16-7 1 8-0 17-7 2O'2 + 10-8 + 9-7 + 9'9 + 9'6 + 10-7 o + 9-7 +23-5 +33-0 +48-5 + 61-6 -IO- 4 io-6 -10-3 -11-3 IO'I -10-3 + o-i + 13-7 + 22-7 + 37-6 +48-2 + 67-1 Means 4 22 17-82 + 10-14 ... Group 740. Several very small spots. The group shows frequent changes. Means 3i 176 6-58 -10-73 Apr. 26-353 27-161 28-550 29 30-581 O 2 32 No phn O IO 9 2 141 togiMph. '7 i 24 (,2 O 5 344-8 53 343-2 '4 344-3 65 343-3 26 342-2 + 14-5 +15-6 + 14-7 +24-6 + 14-8 +44-1 + I5-I +56-5) + 15-4 +68-8 Group 736. Two or three very small spots, wliich disappear before Apiil 21. Means 7 51 343-56 + 14-90 Apr. 18-542 19-165 20-421 2 O O 16 56 45 i o I I 33 24 36-0 37-8 37-0 + 15-1 + H7 + '4'9 -36-4 26-4 iQ-6 Group 741. A small spot Means o 23 36-93 + 14-90 ... Apr. 27-161 28-550 '5 II 46 9 9 2" 269-3 270-3 + 12-0 + II-0 -49'3 -29-9 Group 737. Several very small sputs*, which break out in the same area of disturbance as Group 736. Means ... 5 18 269-80 + 11-50 Group 742. A small spot. Apr. 22-164 23-512 24-546 25-166 26-353 27-161 26 10 '9 '9 21 7' 44 1 1 85 127 16 7 o 22 35 12 44 33 9 103 284 39'2 37-2 37'3 32-8 33'o 34'' + 15-2 + 15-0 + I 5 -2 + 14-6 + 14-6 + I5-I + 14-6 + 30-4 + 44'i +47'8 + 63-8 + 75-5 Apr. 28-550 29 30-581 May 1-530 2-549 3-605 24 No pho 20 7 9 o 98 tograph. 76 22 34 4 H ('3 1 1 4 6 o 56 49 42 '3 25 4 28I-6 283-0 284-5 284-5 288-9 287-9 + '97 + 9'5 + '9"3 + 19-1 + '9'3 + 19-2 -i 8-6 - 3-8) + ii-i + 23-7 + 4'-5 + 54-5 Means ... 13 81 35-60 + I4'95 Group 738. A small regular spot, which rapidly diminishes in size. Means ... 8 32 285-07 + '9'35 Group 743. An irregular spot with a small companion. Apr. 21-409 22-164 23-512 1 1 3 7 68 52 23 20 4 5 124 59 16 321-3 321-7 322-1 + 7"! + 67 + 6-8 -73'3 62-9 -447 Apr. 30-581 May 1-530 2'549 34 47 4' 76 181 212 26 3 23 58 "5 "9 228-1 227-0 22--2 + '4'9 + '4'9 + 15-0 -45-3 -33'8 2O'2 Means 10 66 321-70 4-6-87 TAKEN AT (iKKENWIi-ll, IN IM'IA, AND ! IN TIIK YKAIt.S 1882 TO 1885. 149 icb Time. Ai.- is .iii.l Hi -li _! M; ' >ns of Groups of Sun Spots continued. I'm Are* of i lor i|>. M. a I AM'. of Oruuji. M. Latitude of Group. from tral ....... DM* Qreeu irh <'i\il Tim.-. 1'rojeotod Area of Area for Oro.i|i. M..,,, Ixmgitude of Orinip. Mr.U Ut of Ci tllill ' Mil Han. Umbra. Unjl.ru. Wl,,,l,. Spot. Umbra. Whole S|K.t. Umbra. Whole Spot Group 743 continued. Group 747. Two very small faint njola. 1882. ., 3 '60 5 10 4-314 o ;-;4>< " 7i 1 29 5 o 6 38 4 '7 o 227-9 229-0 2297 o 4-15-6 + 157 + '57 - 5'5 + 5-o 422-0 1882. A May 3-605 4'3'4 5 o *S * 3 o '3 4 o 234-0 235-2 o +18-7 418-6 o 4 0-6 411-2 Means '5 59 228-15 + 15-30 ... IIS ... ... 2 9 234-60 418-65 ... IP 744- A large regular spot. (iroup 748. Two very small faint xpota. May 3 605 9 it 4 9 118-6 + 5'5 i < -8 May 1-530 'S49 3605 4'3'4 S'549 6-495 7'45 8-401 9-113 10-486 11-456 12-597 i 3-+39 A 9 60 '79 108 *'3 *3' 222 2O1 126 2I 9 l6o '5 o "7 3^9 53* 53 745 836 900 831 788 801 578 387 *5S 292 101 182 87 >39 '37 '*5 >'3 73 '47 130 '*S 1184 557 543 428 485 494 506 468 456 537 468 462 498 I75-6 '77'9 177-8 178-3 177*4 176-9 176-3 -'i-l 176-4 '7 5'9 176-0 176-1 176-2 + *3'S 423-' + *3'5 4*3-o 4*3-0 + *3'3 4*3-' 4*3-' 412-8 4*3'* 4*2-8 423-1 4**'5 o 14 8 -5 2 -69-5 -55-6 -457 -30-3 -i 8-3 - 6-2 4 6-* 4'5'8 + 33'5 446-4 461-6 47*'8 Means ... ... 4 9 118-6 + 5'5 Group 749. A regular spot, with several small spot) near it. Tlf group undergoea several small changes. May 3-605 4-3'4 5-549 6-495 7-451 8-401 9' "3 10-486 11-456 12-597 '3'439 14-528 o >4 66 103 83 88 43 96 62 45 33 g 43 70 225 43 . 356 379 300 4*4 37* 280 '34 37 21 59 73 5* 5 *3 55 38 33 30 10 127 102 199 304 219 2l6 166 *4" 229 207 "9 48 'SS'3 157-0 156-7 156-5 156*1 155-6 156-5 1566 1565 '55'9 155-1 153-6 4*0-4 420-1 4*0-3 +206 4*0-5 + 21-2 4*1-3 4*1-6 4*''3 4i-8 4*07 421-1 -78-1 67-0 -51-0 -387 -26-4 -'4'4 - 4 -l + 4-* 426-9 +4'H + 5'7 + 647 M-i ... ... i*7 545 176-69 4*3-08 Group 745. A small S|K>U May 2-549 o '3 8 211-8 +15-4 -35-6 HIS 37 iHi '55'95 4*0-91 Mean- 8 211-8 4- 15-4 Group 7 50. A small spot Group 746. Two or three small spota close together. May 4-314 5-549 o o '9 12 o o 36 12 148-6 149-4 -19-3 -19-4 -75> -58-3 May 2-549 3-605 4-3I4 5-549 6-495 7'45' 8-401 9 113 10-486 o 8 o 28 20 10 '4 o 9 26 37 28 53 43 *9 43 *7 62 o II o 21 '3 6 8 o 5 77 53 *9 4 28 17 *S >5 38 169-3 167-5 1677 167-4 167-1 166-8 165-7 1667 165-8 4**'o + 23-5 4*3-8 4*4-6 + *47 4*4-6 + *4'9 + *4'5 425-0 -78-1 -65-9 -56-3 -40-3 -28-1 -'5'7 - 4'3 4 6-1 + 23-4 M<>,tns o -4 149-00 ~'9'35 Group 751. A small *|N>t. May r?49 o IO o '5 277-2 16-0 -r-69'5 Mr.UiS ... 7 36 167-11 +24-18 ... Me.n.s o '5 277-2 - 16-0 ... 150 ARKAS AND HELIOGRAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group Longitude from Central Meridian. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Group 752. A regular spot, with some smaller spots following it. Group 756. A small regular spot. 1882. d May 5-549 6-495 7'45 1 8-401 9-113 10-486 11-456 12-597 '3'439 14-528 '5*44' 9 62 106 106 41 89 57 40 5 2 5 '7 28 2 5 6 452 456 39 6 338 286 259 204 167 64 '4 62 77 64 22 45 29 23 35 48 27 47 254 337 276 215 169 '47 148 137 '57 101 o i35'2 35'4 '347 136-3 38-4 140-4 142*6 43'3 145-2 146-9 148-4 o - 4-8 - 4'4 - 5' o -72-5 -59-8 -17'8 1882. ,1 May 8 '40 1 9-113 10-486 22 2 9 5' 45 35 32 2 6 73 45 24 o o o 100-4 '37 69-6 100-8 13-5 59'8 100-4 ~~ '4' 42-0 47 - 47 - 4-6 - 4'2 - 47 - 47 - 3'8 - 37 -337 22-2 2-0 + I3-0 + 28-8 + 41-8 + 58-0 + 71-5 Means 3 47 100-53 -'373 Group 757. A small spot on Hay 9, but much larger on May 10. It is partly hidden by the wire on May 9. May 9-113 10-486 2 l6 8 81 2 43 9 216 222'6 22O'2 + 14-2 + 16-6 + 62-0 + 77'8 Means ... ... 4 1 181 140-62 - 4-48 Group 753. Two very small spots close together, and a third at a little distance. Means ... 23 "3 221-40 + 15-40 May 10-486 Group 758. Three very small spots. May 7-451 8-401 o o '7 10 9 5 198-7 199-6 - 6-7 - 6-4 + 16-2 +29-6 24 o 16 lSo'3 -16-5 + 37'9 Means ... ... o 7 199-15 - 6-55 Means ... ... o 16 180-3 -.6-5 Group 754. A regular spot, followed by a close cluster of small spots. The latter disappear before May 13. Group 759. Two very large spots of irregular outline. The preceding spot breaks up into a number of fragments after passing the central meridian. May 7-451 8-401 9-113 10-486 11-456 12-597 >3'439 14528 15-441 16-525 17-569 23 69 34 94 57 48 5 43 32 37 o 94 353 334 481 39 3'8 226 234 '5 96 45 44 87 3 60 32 25 26 24 20 3 o 178 425 291 37 220 1 66 118 >3i 96 77 54 108-9 106-3 108-0 107-3 108-0 109-0 110-8 1 1 ri ui-6 II2'I 1 12-6 + '3-5 + 139 + '3'9 + '37 + 13-7 + 14-0 + '3'3 + '3'4 + '37 + '37 + '37 -73-6 -637 -52-6 -35'i -21-6 5'5 + 7'4 + 22-2 + 34-7 + 49' 6 + 639 May 10-486 11-456 12-597 '3'439 14-528 15-441 16-525 17-569 18-428 19-572 20-402 21-510 22-118 23-092 24-100 43 H5 342 55 521 502 729 456 463 228 172 231 43 27 '5 17' 79 1643 1966 2567 2380 2803 2462 2477 '449 1064. 676 323 131 69 140 256 366 467 35' 306 416 256 268 '43 12 I 206 47 43 60 560 '33' 1723 1620 I/OI 1440 1595 1385 H33 916 755 611 355 21 I 28l 60-6 577 55-8 55'2 55-6 54-2 52-8 5''5 50-8 49'4 49-0 48-4 48-1 45-6 44'9 -28-1 -28-7 28-9 -28-5 -28-5 -28-9 -29-1 -29-2 -29-4 - 2 9-5 -29-5 -81-8 -71-9 -587 48-2 -33'3 -22-7 - 97 + 2-8 + '3'4 + 27-1 + 37'8 + 51-8 H-59'5 + 69-9 + 82-5 Means ... 34 188 109-61 + 13-68 ... 2 9 4 29-6 29-8 Group 7 5 5. Two very small spots. -30-1 Means ... 230 1061 51-97 -29-15 May 8-401 9-113 10-486 11-456 12-597 '5 22 20 O 33 63 53 5 28 9 12 10 20 35 27 26 16 138-9 138-7 138-1 138-6 140-3 -14-1 14-2 -14-8 ~'4'3 -13-9 -JIM 2 I -9 - 4'3 + 9'o + 25-8 Group 760. A number of spots in a straight line. The group gradually diminishes, and only the preceding spot is left on May 22. May 12-597 9 13-439 116 14-528 105 '35 459 609 '7 168 9' 404 682 556 347 34-0 33'4 + 9-8 + 10-7 + IO'2 -79-8 Means ... 6 25 138-92 14-26 69 4 -55'5 TAKEN AT CKKKNUICU, IN INHIA, ANH IN M . IN TIIK YKAUS 1882 TO 1885. 151 ll.itr Greenwich Civil Tune. 1 llrliMjiiipliic Positions df Ci-oujis nf Sun Spots cvnlinued. 1'rojected Armof Area I'T Group. Mr.1ll Longitude of Gri'iip. Mean Latitude of Group . itUlU fr..ni Central Meridian. Data. awtoh C'ivil Time. 1'rujected Area of Ar.-a for Group. Mean Longitude uf Group. Mean Latitude of Group. Longitude fiom Centml \\ Umbra, Whole Bf* Umbra. Whole Spot Umbra. Whole Spot Umbra. Whole Spot ( Ir.pup 760 continued. Group 765. A regular spot, with a small companion. Mav 15-44' 525 17-560 18-428 19-572 10*401 1-510 22'l |8 l6 7 122 '47 97 34 '9 o o fi 7 691 624 387 169 81 21 IO "9 55' 72 405 78 33' 49 '99 19 91 ii 49 o 16 o 9 32-8 33-8 34'5 37-0 39'9 43'* 44-o 44'' o + 10-5 + 10-6 + 10-8 + 10-8 + 10-7 4-10*4 + 10-2 + 11-8 O -44 ' -28-7 -14-2 - 0-4 + 17-6 + 32-0 + 47'4 + 55-5 1882. May 25-098 26-480 27-403 28-112 29-474 30-397 31-401 .lune 1-291 2-284 3-416 4'5'3 5-495 6-122 8 68 72 52 ll 7* 95 64 * 9 64 *9 11 7 7* 218 291 298 381 393 403 320 269 T 101 77 44 23 73 57 34 45 38 49 34 29 47 3 36 22 2OI 142 230 198 212 2O6 210 '7* '59 187 65 >3' 119 o 230-0 229-0 229-9 230-3 230-3 *3'3 130-3 130-4 130-1 130-5 130-8 130-5 130-0 o +137 + '37 + 13-8 + '37 + '3'8 + 13-8 + 14-1 + '4'* + I4'4 + 15-0 + '5'4 + '4'9 + 15-3 -79-1 -6r8 -48-7 -39-0 10-9 - 8-8 + 4-6 + 16-4 + 29> +447 + 59'5 + 7'i + 79'9 Means ... 57 299 37-40 + 10-59 Group 761. A small faint spot '3 '439 24 o 3 99'9 -10-4 - 3'5 Means ... ... 4 188 130-19 + 14-29 ... Means ... 13 99-9 -20-4 Group 766. A very small spot Group 762. Two large regular spot*, with a number of small spots between and around them. May 29-474 30-397 31-402 June 1-291 o 6 10 5 '5 10 3 10 1 1 9 5 191-3 >93'3 193-9 193-1 -14-6 ~'4'4 -14-1 -12-3 -58-9 -45-8 -31-8 20-9 May 14-528 '544' 16-525 17-569 18-428 '9-;72 20-402 21-510 22-118 23-092 24 100 2 ; -098 26-480 74 '75 i95 37" 3'5 316 270 355 1 60 95 67 35 9 395 805 1171 '777 2194 2109 1958 1785 343 1005 757 4'2 5* 119 189 221 227 172 162 '39 '95 94 67 60 47 4' 658 867 890 1086 1218 1084 1008 975 788 692 670 549 252 1 6-3 15-1 14-8 '57 T 16-2 16-3 16-8 17-3 17-6 17-1 16-7 4'9 -.6-4 -16-3 -16-1 -'S'S -'57 -15-1 -152 -15-0 -15-1 -14-8 -14-8 ~'4'5 -'4 - 3 -72-6 -61-8 -477 33-0 -22-3 - 6-1 + 5"' 4-2O-2 + 18-7 + 4' 9 + 54-7 +67-6 + 84-1 Means ... i 9 193-15 -1385 ... Group 767. A regular ipot May 29-474 3'397 31-402 June 1-291 2-284 3-416 45'3 5 '495 6-122 7'45' 8-130 9'47o '7 52 84 55 7$ 1 08 87 74 67 38 32 15 87 207 *94 334 45' 368 44 370 356 221 '39 40 7 81 83 42 47 61 47 4 37 25 24 16 356 324 290 253 185 208 218 202 199 '45 IO2 45 169-1 169-5 169-1 160-4 168-9 168*1 168-0 168-5 167-9 167-5 167-4 167-1 + 21-4 + 21-5 + 21-5 + 21-5 + 215 + i-4 + 11-4 + 20-8 + 21-1 + 21 -0 + 20-4 + 20-8 + 21-19 82-0 -69-6 ff..< M?ans 826 16-15 -15-29 -44-6 Group 763. Two very small faint spots. 3' y -'77 - 33 + IQ-I + '7-8 + 3i ' + 439 + 61-5 M.iy 16-525 17569 18-418 '3 o o 3' 18 46 7 o 17 61-5 10 63-4 27 60-9 4-19-1 + 19-8 + i'9 ro + 147 + 23-5 Means ... i 18 61-93 + 19-27 ... Means ... 48 219 168-39 Group 764. A small spot ('roup 768. Two Tery small faint upota. May 20-402 o 1 1 6 0-5 + 11-4 10-7 June 1-291 12 '4 277-3 +25-7 + 63-3 Means ... 6 0-5 + "'4 ... Means ... ... '4 2773 +25-7 152 AREAS AND HELIOGRAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Group 769. A very small faint spot. Group 775. A very small faint spot. 1882.,, June 3-416 I 1 1 6 o 189-6 o -16-6 o + 3'8 1882. ,, June 7 '4 5 1 '3 O 7 o 124-6 -13-0 o - 7-8 Means 6 189 6 -16-6 ... Means o 7 124-6 -13-0 Group 770. A small spot. Group 776. A very small faint spot. Junu 3'4i6 4-5I3 4 8 16 15 4 5 '5 10 129-6 131-0 + 16-6 + 16-6 - 5 6-z -40-3 June 7 -4 5 i 3 9 2 6 93-9 -16-3 -38-5 Means 2 6 93'9 -16-3 ... Means 5 '3 130-30 + 16-60 Group 777. A large spot, with several small spots following it. The group undergoes great and frequent changes. Group 771. A very small spot. June 9*470 lO'ZOO 11-429 12-41 1 3-294 14-512 15-538 16-399 17-489 18 '9 20-433 63 59 99 162 97 240 263 293 277 No pho No pho 1 1 299 291 662 824 906 1478 1452 1587 1307 tograph. tograph. 56 92 58 7 9 6 53 124 140 167 186 (135 (84 33 439 287 464 487 $ 770 901 873 643 4'3 183 36-4 377 37'i 37'5 36-6 37-6 38-0 38-2 38-8 39" 6 4"3 41-1 -12-8 12'2 -I2'4 -12-3 -12-3 -I3-3 -69-3 -58-3 -42-7 June 3 -4 1 6 4-513 o 3 20 8 2 26 7 119-4 1 19-6 + 16-3 + 16-1 -66-4 -5*7 Means ... ... I '7 119-50 + 16-20 ... 29 3 -18-5 - '"4 + 12-6 + 24-2 + 39'3 + 53-Q) + 66-8) + 80-5 Group 772. Two small spots. -I2'9 -127 -I2'4 I2'2 I2'I -11-9 June 3-416 o 7 10 1 16-9 + '4'9 -68-9 Means 103 560 38^24 12-46 Means 10 1 16-9 + >4'9 Group 778. Two small spots. Group 773. A small faint spot. June 10-200 11-429 12-411 o 1 1 o 21 33 9 6 12 18 5 837 831 84-3 + 26-O + 26-I + 25-3 June 4*513 o 3 o 2 125-1 + 17-1 -46-2 12 3 + 3'5 + I/-5 Means ... ... 2 125-1 + 17-1 Means ... 2 12 83-77 + 25-80 Group 774. A small spot. Group 779. Two or three small spots. June 7'45i 8-130 9-470 o I 21 '5 7 o I I I I 152-5 155-2 157-1 - 8-6 - 77 - 7'2 + 20-I + 317 + 5i'4 June 1 1*429 12-41 1 13-294 10 49 2 4' "5 40 12 39 2 47 92 27 16-2 17-2 7'3 -*r ->3'4 -11-7 -63-6 -49-6 -37-8 Means o 9 !54'93 - 7-83 ... Means ... 18 55 16-90 -12-77 ... TAKKX AT CRKKNWH'II, IX IX1UA, AND IN MAU;ITIUS, IN T1IK VKAR8 1882 TO 1885. 153 Greenwich Time. Proj. Area of Al-lMS Area for !![>. and HfliogiMphk 1 . Positions of Groups of Sun Spots continued. Mean Longitmlf of Group. Mean Utitude of Group. Longitude from Central lian. Greenwich Civil Time. 1'rojoctod Area of Area for Group. Mean Longitude of Group. Mean Latitude of G n>ii| i. Ixingittide from Central Meridian. Umbra. Whole Spot Ub r Umbra. Whole Spot Umbra. Whole Spot Group 780. A uumU-r of S|M>U rrangeI2 '^538 16-399 '7-489 18 9 20-433 21 -291 22-I85 23>02 14-408 '9 17 .5 N.I plni 85 M 38 37 o 53 101 1 68 535 t _: t]> t m ii . 693 5*9 365 196 16 21 '4 *S 96 (79 (6 l 4 6 U *4 3 o 62 86 "4 3*7 3++ 361 378 306 233 59 '7 o 335' 6 334"2 335-6 331-2 331-0 3309 337 331-6 330-9 330-6 3 2 9'4 o + 21-5 + 21-7 + 21-3 + 22-4 + 22-6 4-227 + 22'9 + 21-8 + 22-4 + 227 + 21-6 O -63-4 -51-2 -38-4 1882. .lime 14-408 Means ... ... o '4 101-8 + 16-1 ... *8 3 -5-5) - '7) + 10-1 + 22-4 + 33-5 +49J + 61-4 Group 785. A small spot when first seen on the Eaat limb. The group increases in size, and becomes a long line of spots, of which the lirst spot is the largest .lime 25*529 26417 *7-527 28-373 29-245 30-343 July 1-443 2-463 3-457 4 5-474 I I 74 54 5 5 2 '*3 102 5 No pho 2 8 *7 218 488 266 376 529 406 281 tograph. 9 o 8 44 2 9 26 27 67 63 46 (s 4 8 20 130 262 1 3 6 I 9 2 289 *5S 211 123 *4 191*1 193-1 '94"5 '957 196-8 197-8 196-9 198-3 199-0 199-8 100-5 + 10-6 + 10-6 + 10-9 + 10-8 + 10-4 + 10-4 + 10-7 + lO'l + 9'5 + 9'5 + 9-4 61-0 -48-3 -32-2 -197 - 7"' + 8-2 4-*2'0 + 37-0 + 50-8 + 6-T9) + 79" Mi-ans ... ... r 217 33''97 + 22-24 Group 781. A tmall regular spot, followed by come smaller spoU. June 20-433 21-291 22-185 23-402 24-408 S'5'9 26-41- 4* '3 10 49 34 7 18 *'4 9' 207 *54 160 65 7* *5 7 10 26 9 5 >5 '*5 49 1 06 '33 90 43 58 192-5 2927 2927 292-3 292-8 2927 292*6 + 156 + '5'4 + 15-2 + '5'4 + 15-' + '5'5 + '4'9 -28-1 -16-5 - 4'7 + i i-o + 24-8 + 39'5 + 5'-* Means 3' '5' 196-78 + 10-27 Group 786. A very small faint spot. Meana ... 15 86 292-61 f'5'30 ... Group 78*. A small spot. June 25-529 26-417 27-527 28-373 3 o 12 6 21 34 17 i o 7 o 3 1 1 20 12 250-4 250-4 251-4 151-1 + H'9 + 24-' + *3'5 + 23-2 - 2-8 + 11-5 + *47 + 367 June 23-402 [ *4'48 o o '3 '3 o 1 1 8 229-7 229-8 + 14-0 + 14-6 -51-6 -38-2 Means ... 2 12 251-10 + *3'93 ... Means ... 10 22975 + '4'3 Group 787. Two very small close clusters of spots when first seen. Tin- group develops into a line of -i-'ots, the middle spots of which soon disappear, whilst the lirst and last increase in size. Group 783. A small regular spot. June 23-402 24-408 25-529 16-417 7*S7 *8-373 29-245 30-343 July i -443 2-463 '3 *4 16 12 25 3 1 1 4 9 56 95 101 104 n i 89 93 64 95 18 '9 3 1 1 3 '3 5 6 8 6 o 84 9' 69 61 59 45 48 35 61 23 210-9 2IO-I 211-5 2117 212-0 212-2 212-0 211-8 2127 213-3 + 14-6 + 15-' + 14-6 + 14-6 + '4'9 + '4'7 + 14-6 + 15-0 + 14-1 + >37 7 4 -57'9 -417 -297 -'47 - 3'3 + 8-1 + 22'2 -r-37'8 + 52-0 June 25-529 26-417 27-5Z7 28-373 29-245 3343 July 1-443 2-463 26 3 1*7 I 9 8l 36 43 84 20 349 745 664 5*5 3" 39 '4 2 73 5 58 37 62 o 45 1 1 '99 466 482 5'7 553 207 '47-5 246-1 245-8 245-1 245-2 245-6 146-4 2 44-5 -'9'3 -18-8 -19-4 -19-3 -19-1 -19-2 -18-9 2O'I - 57 + 47 + 19-1 + 297 + 4''3 + 56-0 + 71-5 + 83-2 Means ... 1 1 58 211-82 +14-59 M.-ins ... ... 37 310 145-78 -19-26 ... PHOTO-HELIOGRAPHIC RESULTS, 188:: 154 AREAS AND HELJOGRAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Urnbra. Whole Spot. Group 788. Two irregular spots, and two or three very small spots close to them. Group 792. A very small faint spot. The group as it approaches the central meridian, and forms three or four spots. 1882.,, June 26-417 27-527 28-373 29-245 3'343 July i -443 2-463 3-457 4 S'474 o 38 '7 22 27 105 80 102 No pho 60 35 184 270 339 377 419 306 312 tograph. 268 O 39 H H 16 56 43 5 (54 5 67 195 212 2I 9 212 222 I6 3 177 I 99 22O 1677 167-1 167-8 168-6 169-7 169-4 169-5 169-6 170-4 171-2 o -15-1 -'5-5 -15-1 -15-1 -15-0 -15-1 -15-0 -14-8 -14-4 -14-0 o -737 -59'6 -47-6 -35'3 -19-9 - 5'5 + 8-2 + 21-4 + 35-6) + 49"7 1882.,, July 1-443 2-463 3-457 4 5'474 6 7-416 8-106 2 O 3 No pho 63 No pho 2 3 12 1 1 16 167 tograph. 185 tograph. 116 58 I o 15 ( 2 5 34 ( 2 5 16 10 7 8 86 92 98 90 82 49 o 138-9 '39'4 139-8 139-8 1397 139-6 I39-4 139*3 o - 5-5 - 5-6 - 4-6 - 4'9 - 5"> - 5'* - 5'3 - 5'5 36-0 -21-9 - 8-4 + 4-9) + 18-2 +-3Q-9) +43-6 + 52-6 Means 16 64 I39-49 - 5' 21 Means 34 189 169-10 -14-91 Group 793. A small spot, not seen on July z. Group 789. A small spot. June 29-245 30-343 July 1-443 2-463 3-457 4 5'474 6 7-416 8-106 2 6 9 H 8 No pho 9 No pho 12 6 36 55 63 47 23 tograph . 62 tograph. 24 12 I 1 1 7 4 (5 5 (8 IO 6 42 4> % ,2 2 3 3 >9 12 140-2 141-9 144-8 145-6 145-6 144-9 144-2 144-8 H5-3 146-3 - 47 - 4-6 -4-6 - 4' 6 - 4-6 -637 -477 -30-1 -15-7 2'6 + 10-0) + 227 + 36-I) + 49'S + 59' 6 July 1-443 2-463 3H57 II O 54 '4 8 4 8 127-8 126-2 + 18-1 + 17-6 -47-1 22-0 Means 3 1 6 127-00 + 17-85 4-2 - 3-8 - 4'3 - 4-8 - 4-6 Group 794. A number of small spots. Before disappearing at the West limb they have almost all coalesced to form one large spot. Means 6 27 144-36 - 4'4 8 July 10-438 11-294 12-472 13-249 14-476 5-557 16-518 26 39 110 55 7 2 4 12 9' 219 499 447 3 2 7 400 4 1 13 20 62 34 57 3i 34 47 H3 281 278 265 53 117 55' 52-2 53'5 53-9 53-8 55-0 56-1 + 16-2 + 16-3 + 15-8 + 15-6 + 157 + 15-9 + 16-3 Group 790. A very small spot. 0-8 + 77 + 24-6 + 35'3 + 5I-5 + 66-9 + 807 June 29-245 30-343 July 1-443 2-463 3W o o 3 o o IO '7 22 ii o 2 O O '3 15 4 i 8 136-1 137-0 137-0 136-1 136-5 + 15-0 + 15-0 + 15-0 + 14-0 + 15-2 -67-8 - 5 2-6 -37'9 -25-2 I I '7 Means 36 229 i 54-21 + I5-97 Group 795. Two very small spots, not seen on July 13 and 14. Means o IO '36-54 + 14-84 Group 791. A small spot. July 12-472 13-249 14-476 '5-557 16-518 17-440 O 4 o 16 o o 43 49 20 o 2 O '4 o o M 2 5 1 1 335-6 334'9 334'S 336-2 + H-3 + ii-i + 11-4 + 11-5 -53-3 -13-2 - 0-9 + 13-0 June 30-343 July i -443 2-463 3H57 o 1 1 1 1 3 i/ 4 2 5 '3 35 12 46 9 4 2 9 116-8 1 16-3 1 16-4 "S'3 -227 -23-2 -23-2 -23-0 -72-8 -58-6 -44-9 -32-9 Means 6 33 1 116-20 23-03 ... Means ... O 12 335'3 + "'33 TAKEN AT CrUKKN WHII. IN INDIA, AM' IN MAURITIUS, IN TI1K Y&AKS 1882 TO 1885. UUI is ami Hi'Iiojinijihic 1' >f (ipnips f Sun Spots continual. Dat-. ;wich Civil Time. Proj Area of An for :ip. Mean I, .ii^itudi- 17-440 18-452 19-506 20-532 2 ''533 2 2 ' I 06 2 3'579 M 189 56 148 94 '35 202 "5 '57 131 87 "5 99 35 348 652 908 855 986 885 785 716 57 539 420 78 90 138 66 81 109 "4 81 74 5 2 94 ' 1 10 60 568 608 645 509 5*7 45* 407 399 343 443 466 309 289-5 290-4 290-6 2914 2917 2927 292-8 *93'5 294-1 *94'5 2 947 294-6 + i4' + 14-0 + '4-4 + 14-8 + '4'9 + 15-2 + 14-8 + '4'7 + '4-4 + '3'9 + '3'9 + 14-1 -72-8 -577 -44-8 -31-8 - 18-0 Group 802. Two small spots. Other small xpoU appear and form a V-shaped group, the pre- ceding spot, which is also the largest, forming the angle of the V. - 3'' + 10-6 + 2 4'5 + 3 2 '7 + 52-6 + 63-6 -r-73'9 July 18-452 19*506 20-531 z''533 22'IO6 2 3'579 2 4'397 25-189 26-406 27-406 o 8 28 44 45 40 4' 16 26 2 28 5* 128 264 268 228 21 1 IO2 6 1 10 6 '7 26 2 5 22 26 26 3 2 9 39 80 '5' 150 132 '33 l\ 26 252-6 2 53'9 254-8 254-6 2 547 2567 257-8 259-1 259-8 260-1 18-9 19-6 -19-4 -19-8 20-2 20'* -57'i -41-9 -27-4 -' - 6'7 + 14-8 + 26-7 + 38-4 + 55-3 + 68-8 in- 89 473 292-54 +14-43 ... 20-1 -l 9 -3 -1 9 -| Group 798. A close cluster of very small faint sjwts. Means ... ... 16 88 256-41 -19-68 Group 803. A small i>ot. July 15-557 16-518 17-440 18-452 19-506 20-532 *' 533 4 2 O O '4 9 3 34 1 1 12 60 I' 67 4* 6 2 O 8 4 2 5 10 8 37 4* 35 22 2 77'4 *79'4 280-2 277-5 276-2 277-8 178-2 -H8-6 -r-'9'4 -l-'9'3 + '9'6 + 18-7 + >9 - 3 + 18-9 -70-7 -56-0 -43-0 -32-2 19-6 - 4'4 + 9' July 18-452 19-506 20-532 2 ''533 22-106 0160 0250 16 37 15 12 30 3 2 ' * 4' 33 33 21 '3 2327 231-2 230-8 230-4 230-5 -7'5 -.8-3 -17-8 -18-1 -18-2 -77-0 -64-6 -51-4 -38-6 -30-9 1 Means 3 2 9 278-10 + 19-11 Means 5 28 231-12 -1798 ... Group 799. A small spot. Group 804. Three or four small xpoU. July 20-532 zi'533 22-106 o 9 15 o 4 7 26 o 18 4 9 216-0 215-5 215-6 + 18-4 + '9'3 + '9'5 -66-2 -53'5 -45-8 July 17-440 o 9 6 282-9 ii-i -40-3 M.:lU8 o 6 182-9 i i-i ... Mi-ana ... 2 26 215-70 -H9 - 156 AREAS AND HELIOGRAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. Date. Greenwich Civil Time. Projected Area of Area for Group. Mi-ail Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Group 805. A close cluster of small sjjots. Group 809. A small spot. 1882. July 21-533 22-106 O o 18 37 o 9 '9 o 262-2 262-9 + 7-6 + 7-7 o - 6-8 + I'S 1882. Aug. 3-576 3 '5 2 10 o 57-9 o + 16-6 . o -38-6 Means 2 10 57-9 + 16-6 Means ... '4 262-55 + 7-65 Group 810. A small spot. Group 806. A small spot, with two or three small faint spots near it. July 21-533 22-106 23-579 24-397 25-189 26-406 27-406 o 2 27 7 10 6 9 3 2 32 137 59 33 46 77 o 3 18 4 5 3 4 59 34 96 36 18 24 39 194-2 W3 I97H 197-4 199-9 196-1 194-8 + 10-7 + 9' 8 + 10-5 + 10-4 + 10-4 + "3 + 10-2 -74-8 -62-1 -44-5 -337 20-8 - 8-4 + 3-5 Aug. 8-604 9-625 10-378 1 1 -6 1 6 o 6 2 O '5 '5 25 35 6 2 29 16 21 22 313-2 314-1 314-2 3 '47 + 217 + 21-8 + 22-4 + 22-4 -76-8 62-4 -52-3 , -35-5 Means ... ... 2 22 314-05 + 22-08 Group 8 1 1. Two spots, which rapidly increase in size on August 10 and n. Means ... ... 5 44 197-01 + 10-47 Group 807. Two or three small spots. Aug. 9-625 10-378 i i'6i6 12-399 13 14-516 I5-537 16-570 3' 73 205 '74 No pho 66 62 o 120 500 981 8 49 tograph. 322 256 28 16 37 1)2 102 (82 61 86 o 62 2 5 8 533 496 399 302 364 69 lO'I i i-i 9-6 9' 1 9-6 10-0 8-8 4-6 + 207 + 20'0 + I 9 -8 + 19-8 + I 9 -6 + I9-3 + I 9 -6 + 20-3 - 6-4 + 4'6 -M9'4 + 29-2 + 437) + 58-1 + 7'4 +79-9 July 23-579 24-397 25-189 26-406 27-406 28-170 29-427 4 23 o 49 3i o o 68 83 3 191 HS 5i 89 3 4 o 3 o 44 47 16 97 75 28 61 204-2 203-2 205-7 203-4 203-7 203-5 208-0 + l6'3 + I 5 -8 + 15'9 + i5'9 + 16-1 + 15-1 + 10-3 -37'7 -27-9 -15-0 i-i + 12-4 + 22-3 +43 + Means 62 310 9-11 +19-89 Means 8 53 204-53 + 15-06 Group 812. A regular spot. Group 808. A close cluster of small faint spots. The group develops into a large V-shaped group, the preceding spot, which is also the largest, forming the angle of the V. July 27-406 28-170 29-427 30 3>'549 Aug. i 2-395 3-576 4-547 5 6-538 17 34 No pho 48 No pho 2OO 108 84 No pho 39 60 "9 310 tograph. 617 tograph. 908 720 673 tograph. 271 32 25 (26 26 (68 109 67 62 (62 62 113 140 233 285 337 4I 6 495 443 489 4 6 3 436 118-3 1 18-1 118-9 i 20-4 121 -9 I 2 3-7 125-5 126-5 126-8 I27-O 127-2 -11-3 I I-O -10-4 I I-O -11-5 -11-9 -12-3 -12-6 -12-5 -12-4 12-2 -73"o -63-1 -457 -30-2) -14-7 - 0-7) + 13 + + 30-0 + 43'i + 56-5) + 69-9 Aug. 9-625 10-378 11-616 12-399 '3 14-516 '5'537 16-570 17-160 18-136 '9 20-529 15 '3 58 63 No pho 72 70 42 16 25 No pho 1 1 64 114 245 269 tograph. 326 2 9 2 243 194 165 tograph. 70 37 18 48 43 (40 38 35 22 9 15 .('4 12 '54 S5 202 183 177 I 7 148 I2 5 104 99 89 78 297-2 297-1 296-9 296-9 296-8 2967 296-7 296-6 296-4 296-4 296-5 296-5 + I 5 -I + 15-6 + I5-I + 14-2 + I4 - 9 + l 5 -6 + 15-6 + 15 + + '5'4 + J 5'4 + I5-5 + 15-5 -79'3 -69-4 -53'3 -43-0 -29-1) -15-2 - 17 + 11-9 + 19-6 + 32-4 +48-3) + 64-1 Means 49 35 I23-I2 -1174 Means ... 28 140 29673 + 15-28 TAKES AT (JKKKSWiril, IN IXHIA, ANI> IN MAURITIUS, IN THE YEARS 1882 TO 1886. 157 1 MS :iml Heliographic Positions of Groups of Sun Spots nnUinued. Dtti. Greenwich Ciril Time. Projected Area of Area for Group. M. Longitude of Group. Mran Latitude of Group. I.i.llJJItll.lc from Central Meridian. Date. Qrucuwich rime. Projected Area of Am for Group. Mean Longitude of Group. ile Latitude of Group Longitude !,..,; Central M.i..li..,. Umbra. Whole Umbra. Whole Spot Umbra. Whole S|-..I. Umbra. V.!..,. Spot Group 813. A r.Ty small faint ipot ot befoir August n. 1882. ,, Aug. 10-378 O 8 o 305-3 o -17-4 O -61-2 1882. Aug. 20-529 21-541 22-391 23H54 24-579 49 109 189 109 12 203 562 884 490 9 3' 80 '75 165 *7 128 4" 814 719 329 o 258-0 57-4 258*2 259-1 *57'4 o 20-9 2I'I 21-1 21'* -22'3 O 4-25-6 4-38-4 4-50-4 4-65-3 4-78-5 is 8 305-3 -T4 Group 814. Three or four imall spots in straight line. Means ... 96 480 258-02 -21-34 * * Group 818. A small (pot Aug. 17-160 1-136 '9 20-529 21 54' 22-391 23H54 O 20 No pho 9 1 I 9 o 67 tograph. *3 30 20 18 "3 (9 S 7 7 o 3 4' 27 '3 9 4 '7 241-7 243-1 245-0 246-8 246-3 246-1 246-0 20-9 20-6 -20-7 20-8 -20-8 2PO 20-8 -35'' 20-9 - 3-3) + '4'4 4-27-3 + 38-3 + 52-2 Aug. 20*529 O 7 4 >44'9 -'7'4 4-12-s Means ... 4 *44'9 -7'4 ... Means ... 6 '9 245-00 20-80 ... Group 819. t~vry small spot. Group 815. A small s|K>t Aug. 20-519 21-541 4 10 9 2 O 6 S 204-1 205*1 + 10-9 + 11-3 -28-3 -13-9 Means ... ... I 6 204-60 + 11-10 Aug. 18-136 '9 20-529 21 541 22-391 23-454 24-579 0- No plio 14 8 10 12 3 3 tograph. 43 33 3' 16 '3 o (4 8 4 i 2 4 '4 *4 18 16 ! 203-2 205-2 207-1 208-3 209-2 aio'3 210-7 - 6-6 7 ' - 7'5 - 7-6 - 7'3 - 6-9 - 7-0 60-8 -43'') -25-3 -107 4- ''4 + 16-5 + 31-8 Group 820. A very small spot. Aug. 20-529 21-541 o 7 20 4 10 200-3 199-1 4-12-0 4-11-9 -32 i -19-9 Means ... ... 4 '3 207-71 - 7''4 Means ... o 7 19970 4-11-95 ... Group 8 1 6. Two regular [x>t, with Mreral small .spots between them. Group 821. A regular spot Aug. 22-391 23-454 24-579 25-600 26*426 27-393 28 29'394 30-550 3'"374 Sept. 1-291 2-428 o 27 3$ 43 53 37 No pho 44 32 ii 10 8 34 105 i>7 164 212 220 tograph. 183 162 5 7 2 4 6 o 35 *9 28 3' 20 (22 24 9 7 8 1 1 '3' 39 132 109 >*4 119 I 10 100 99 34 S 64 126-8 128-0 128-2 128-1 129-0 128-5 128-9 '-93 129-1 128-9 129-0 1*8-8 in M-O 10-6 10-9 1 1-1 iro -11-5 -11-9 -3 1 1-2 -114 -II J 81-0 -65-8 -507 -37-2 -25-5 -13-2 + o-5) 4-14-1 4-29 i 4-39-8 4-52-0 4-66-8 Aug. 18-136 '9 20-529 21-54.1 22-391 23-454 H-579 2 5-600 26-426 27-393 28 29-394 16 Xo ph< 25' 304 280 286 2 5 6 283 218 83 No phc 80 90 tograph. 1300 1 190 1536 , 5 60 1522 1232 840 619 tograph. 2/2 38 (104 169 '74 148 '44 3i ' 5 < 136 63 (101 138 198 535 872 680 809 787 781 683 5 < $ 464 480 495 185-9 188-1 190-3 190-5 190-7 191-4 190-3 190-2 191-2 190-4 190-4 190-3 4-13-0 4-13-0 4-13-0 4-I3-5 + '3'3 + 13-6 4-13-2 4-13-2 4-i3'2 4-13-0 ,3-1 4-i3- -781 -60-1) -42-1 -28-5 -17-1 - *'4 + 11-4 + 24-9 + 367 +487 + 6, - 9 ) + 75'' Means ... '25 609 189-98 4-13-18 ... Means ... ... 20 103 128-55 ii 19 ... 158 AREAS AND HELIOGRAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Group 822. Several small spots irregularly arranged. Group 827. A regular spot, with some smaller spots close to it. 1882. Aug. 23-454 H'579 25-600 *6'426 27193 28 29'394 3-55 2 5 7 16 16 3 No pho 22 5 64 31 61 80 104 tograph. 80 52 21 4 9 9 2 (8 '3 3 55 20 34 42 5 2 49 45 35 o 139-6 141-8 I39' 1 140-4 140-4 140-9 +i'3 141-6 o + II-I + 11-4 + 11-5 + 11-4 + ii-i + 10-9 + 10-7 + 12-O -54-2 -37'I 26 P 2 -I4-J ~ I'3 + 12-4) +26-1 +41-6 1882.,, Aug. 31-374 Sept. 1-291 2-428 3-600 4'54' 5-336 6-512 7-398 8-400 9-530 10 11-356 O ] 1 83 89 89 122 75 73 48 68 Nu pho 6 7 2 98 363 37 446 525 428 310 259 227 tograpli. 2 5 O '7 80 63 53 67 38 38 26 42 (24 6 273 160 35 262 267 289 220 1 60 140 140 82 2 4 o 4-3 3 '4 2-9 2'I 2-0 2 - I 2'I '3 2-3 2-5 2-3 2'I o + 20-6 4-20-6 + 2O'I + 2O'I + 2O"I + 2-3 + 20-7 + 20-9 + 20-7 + 20-7 + 20-8 + 20-8 -84-8 -73-6 -59-1 -44'4 -32-0 -21-4 - 6-0 + 6-0 + 19-2 + 34-3 + 46-2) + 58-1 Means ... 9 4 2 140-64 + II-26 Group 823. Several very small spots. Means 38 '97 2-53 +20-53 Aug. 29-394 1 1 40 7 25 121-4 30-1 + 6-2 Group 828. Two regular spots, with a number of very small spots between them. Means 7 2 5 121-4 30-1 Group 824. Several small spots in a straight line . Sept. 1-291 2-428 3-600 30 163 53 66 606 250 21 '55 95 46 582 449 II7-6 II7-4 II8-0 12-0 I2'2 -12-4 + 40-6 + 55'4 + 7I-5 Aug. 29-394 30-550 3'374 Sept. 1-291 6 1 1 7 41 107 55 '4 o 6 4 21 55 28 7 98-7 98-6 99-8 96-6 + l6'6 + I7-0 + I7-5 + I7-0 -16-5 - i'4 + 10-7 + 19-6 Means 90 359 117-67 I2'2O Group 829. Several very small spots. Means ... 3 28 98-43 + I7-03 ... Group 825. A very small faint spot. Sept. 2-428 3-600 2 3 i7 if 2 9 9 64-8 65-5 + 5'4 + 6-2 + 2-8 + 19-0 Means ... 2 9 65-15 + 5-8o ... Aug. 3'55 18 o 9 106-8 + 17-2 + 6-8 Group 830. Two small spots on September z. These develop before September 4 into two large regular spots, with several very small spots near them. Means 9 1 06 -8 + I7-2 Group 826. Two very small faint spots. Sept. 2-428 3-600 5 98 239 443 1 80 178 44 3 37 864 1644 1053 618 118 3 53 H5 306 176 249 116 16 202 521 1142 IOO6 841 3 IO 64-8 66-4 66-7 66'5 6 7 -I 6 5 -8 64-1 + 20-8 +20-4 + 20-8 + 20-9 -Mi'3 + 2!- 4 + 21-4 + 2-8 + 19-9 + 3 2 '7 + 43' + 59' + 69-5 + 81-0 Aug. 31-374 Sept. 1-291 2-428 o o 8 10 '7 o 14 1 1 '3 ,8-5 ,4-9 1 6-0 -11-6 -11-3 I2'O 70-6 -62-1 46-0 4'54' 5'336 6-512 7-398 8-400 Means '3 16-47 -II-63 ... Means 150 577 65-91 + 2 I 'GO TAKEN AT ( lliKKNWICII, IN IM'IA, AND IS M.vriarirs, IN TIIK YKAR8 1882 TO 1885. . \n\us ;iinl Heliograpliir 1'nsitions of Groups of Sun Spots continutd. Date. vi.-h Tim*. Projected Area of Area for Up. M,M,. Longitude of Oroup. Hran Latitude of Gnuip. Ixmptihl from Central Meridian. Date. QrMiiwi' U i'i\il Time. I 1 :. . bid Area of Ait-a for "Up. Mean Longitude of Group. Mean Latitude of Oroup. ituilr from Central Meridian. Umbra. Wool* Umbra. Whole Spot Umbra. Whole Spot. Umbra. Whole Spot Two mall spot*. *3 262 3*3-8 322*0 323-9 3*57 327-1 + 12-2 + *3'i + 12-6 4-22-0 4-2I'O 4-35-4 4-467 + 60-8) + 74-9 4-87-4 Sfjit. 2-428 O 5 1 39'9 -2 5 -2 22-1 Means o 3 39'9 -2 5 -l ... Means ... ... 21 128 3*4-5o 4-22-18 Group 833. A number of spots, arranged in a straight line. Group 838. A large regular spot, followed by a number of smaller spots arranged in a straight line. Sept. 2-428 3-600 4'54' 5 - 336 6-512 7-398 8-400 9-530 10 11-356 '2->44 '4 66 66 199 '44 '53 7 l 56 N ]:. 2O *5 59 '93 3*7 794 638 488 3*' 248 -: tfk. 215 189 '9 57 45 "7 76 76 40 3' <;j 34 2 167 221 468 33' *43 63 .38 156 '74 '49 350-6 351-6 35-3 351-9 351-2 35*-6 3537 354-6 355-5 3S6-3 356-9 + 7-2 + 7-o + 6-8 + 6-9 + 7'' 4- 7-4 4- 77 + 8-0 + 8-1 + 8-2 + 87 -71-4 -54'9 -4*7 -31-6 16-9 - 3'7 + 10-6 + 26-4 + 39-4) + 5^3 + 68-5 Sept. 13-540 '4 15-396 16-229 '7 18-406 19-138 20-411 21-285 22-585 23-200 24-214 25-567 45 No pho 167 5 No pho 318 '49 205 107 '33 67 4 4 339 tograph. 969 858 tograph. '359 1041 924 839 610 463 231 *4 79 (in '43 58 (112 165 75 1 10 60 9' 54 5' '4 815 812 809 58' 642 703 521 482 470 4*4 34 290 So 196-2 1967 197-2 197-2 197-6 198-0 198-0 199-4 199-8 200-4 201-3 2017 198-9 4-M-3 + 11-3 4-11-3 4-12-2 4-12-0 4-117 4-H-5 4--4 + 1 1-3 4-i i -o + 10-9 + II-2 4-10-9 -791 -66-4) -53'6 -4*'S -27-8) -13-0 - 3'4 4-I4-9 + 26-8 4-44-5 4-53-5 4-67-3 4-82-4 Means 49 218 353'*9 + 7-55 Group 834. A imall (pot. Means ... 86 539 198-65 + 11-38 Group 839. A small spot. V 2-428 7 '9 4 10 50-2 -"7 -n-8 4 10 50-2 127 Sept. i 5-396 7 '4 6 1 1 3007 -'3'5 4-49*9 Group 835. A small spot. Means 6 1 1 3007 -'35 Group 840. Two small faint spots. ' 9'530 10 11-356 9 No pho O 3' 17 tograph. (9 7 o 56 253-0 31 253-2 6 *53-3 + 10-8 -r-ii-o + 11-2 -75-2 -63-0) -507 Sept. 16*229 o 26 o 47 3'5'3 +'8-8 + 75'6 Means ... 9 3' *53"'7 + 11-00 Means o 47 3'5'3 +18-8 160 AREAS AND HBLIOSRAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Group 841. Two very small spots. Group 845 continued. 1882. Sept. 30-405 Oct. i -49 1 2-560 12 24 3 74 74 16 6 39 H 43 2 I I 66-4 66-8 66-3 + 21-6 + 20-9 + 2TO o + 13-7 +28-4 + 42-1 1882. d Sept. 18-406 19-138 8 o 20 II 4 o 12 6 o 22O'O 22O"9 20-9 20-2 o + 9-0 + '9'5 Means ... 2 9 220-45 -20-55 Means 6 33 67-32 + 21-27 ... Group 842. A small regulr spot. Group 846. A very fine large regular spot. Sept. 1 8-406 19-138 20-411 16 '3 8 89 83 35 9 8 5 S 2 49 23 2I5-2 214-5 2I3T -23-2 -23'3 -23-2 + 4-2 + 13'' +28-6 Sept. 25-567 26-447 27-410 28-410 29-168 3 - 45 Oct. i -49 1 2-560 3-399 4'H5 5-285 6-146 1 20 2IO 260 3'5 275 347 410 43i 45 247 163 149 696 944 I 21 2 1279 1546 1758 1704 1647 '359 1226 821 481 177 208 198 233 165 198 239 273 290 205 201 37 1029 50-9 936 50-9 923 5 1 " 2 949 5'9 928 50-6 1002 50-5 993 5o-5 1046 50-0 972 49-7 1023 49-1 1015 49-0 990 48-9 -21-4 20-8 21-4 -65-6 -54-0 -40-9 -28-1 -18-4 2'2 + I2-I + 25-8 + 3 6 '5 + 45' + 60'8 + 72-0 Means ... 7 4i 214-27 -23-23 ... -21-7 -21-7 -21-7 -21-7 -21-7 -21-7 22'2 22-1 Group 843. Several small spots ill a straight line. Sept. 21-285 22-585 23-200 24-214 25-567 26-447 17-410 20 23 43 48 35 15 35 77 3 171 '54 '55 7' o ii 12 23 30 25 H 18 39 65 90 95 1 1 1 66 I52-2 I50- 9 I5I-4 I5I7 I52-6 I5I-3 I50-I + 11-5 + 117 + 11-8 + 11-4 + ii-i + II-2 + 11-5 20-8 - 5'0 + 3'6 + I7-3 + 36-1 +46-4 + 58-0 Means 225 984 50-18 21-65 Group 847. Two small spots. Means 16 69 151-46 + 11-46 Sept. 25-567 26-447 27-410 28-410 29-168 30-405 Oct. i -49 1 2-560 3-399 4'HS 5-285 25 57 4 2 57 3' 36 29 3' 28 7 5 189 208 222 189 I 99 193 180 119 70 28 20 9 62 33 37 18 '9 15 '7 16 5 4 365 226 176 121 H5 1OI 93 64 40 18 16 40-1 4''5 41-3 41-1 41-0 40-7 40-8 40-4 40-2 40-0 39'9 + l8- 4 + 18-6 + I8-7 + l8- 9 + 19-2 + 19-4 + 19-8 + 20-3 + 2O-2 + 2O'O + I 9 -8 -76-4 Group 844. Three or four small spots, in the same straight line as 838. - 6 3'4 -50-8 -37'9 -28-0 I 2'O + 2-4 + 16-2 +27-0 +36-7 + 51-7 Sept. 22-585 23-200 32 8 101 47 18 4 56 28 181-3 181-8 -(- I2'O + I2'2 + 2 5'4 + 34-0 Means 1 1 42 181-55 + 12-10 Group 845. A small spot. Means 25 121 40-64 + 19-39 ... Group 848. A fine group of very irregular shape. The preceding spot is regular, but the following spots undergo constant change. Sept. 23-200 24-214 25-567 26-447 27-410 28-410 29-168 o o o 4 45 25 25 15 32 27 '9 112 9 2 o o o 2 24 13 60 '9 24 '7 1 1 59 47 68-1 67-9 67-6 67-2 67-2 68-1 67-6 + 21-2 + 20-8 + 2I-I + 2I-I + 217 + 2I"7 + 21-6 -79T -66-5 -48-9 -377 -24-9 io"9 - i'4 Sept. 25 -567 26-447 27-410 28-410 40 126 IS' '54 260 357 566 631 164 209 '59 123 1057 59' 595 5>7 37-2 37'i 36-7 357 -23-2 -22-5 -227 -22-6 -79-3 -67-8 -55'4 -43-3 TAKKN AT ( iUKKSWlCII, IN IXPU, ANI> IN M.\( lillirs, IN TIIK YKAItS 1 SS2 TO 1885. .'nl Heliojjrapliir Positions of Croups of Sun Spots c Date. Gntawieh Timr. Pmj. Are* of Arc* for '!' !lUll r.mp. M. ,,. latitude I...n^itinln frnlll Central iian. Greenwich I'ivil Time. Projected Arm of Area for Group. Mean longitude f Croup. Mrall Utitude of Group. Longitude from Central Meridian. rmbra. Whole Umbra. Whole Spot Umbra. Whole Spot Umbra. Wllnli- Spot Croup 848 roittinufd. Group 852. Two mnall spots. 1882.,, apt. 19-168 30-405 Oct. 1-491 2-560 3-399 4-1 + ; 5-285 6-146 7-537 98 118 24* '99 25-: 9* 65 46 o 6/9 9'5 1035 9" 869 7*4 466 284 68 '33 140 n- 'I 8 63 55 5 o 474 554 597 534 537 489 398 |ll 35-3 34-9 35' 34-6 34'5 34-o 34'4 33-7 357 o - -227 -22-7 -337 -17-8 - 3'4 + 10-4 4-21-3 + 307 4-46-2 4-56'8 4-77 1 ' 1882.,, Oct. 4-145 5-285 2 3* 44 I 18 26 9-9 10-8 o ~T 4 18-0 e 4- 6-6 4-22-6 -22- 9 -227 -22- 9 -2 3 -I -22-8 -s*s Means ... ... 1 22 10-35 -17-70 ... Group 853. A small spot. Other spots appear on October 5, forming a group of small tpota, arranged in a straight line. Mi-:tll8 ... 1 1 1 5*9 35'*9 -28-85 ... 4''45 5-285 6-146 7-537 8-464 9-398 3 '4 40 23 18 7 26 i 162 1 10 85 38 z 7 to 12 16 5 '4 339'* 46 339-6 81 339-9 59 338-6 50 338-2 *6 337-4 + 7'4 ~*4'' 4- 7'* - 8-6 4- 7'5 4- 3- + 7-9 4-*o-o 4- 8-3 +31-9 4- 8-1 +43-4 Group 849. An irregular ipot, with *evorl small spots clow to it. Sept. 27-410 28-410 29-168 30-405 Oct. 1-491 2-560 3-399 4''45 5-285 6-146 7-537 38 161 98 160 217 76 166 83 4* 1 1 4 202 | 01 632 7** 936 823 7*3 555 320 1 16 63 3 8 120 62 85 109 89 88 48 29 10 27 203 37* 398 386 47 * 418 384 318 222 103 118 3' > 31-0 3''4 32-2 327 327 3*-6 32-2 32-2 32-8 337 + 6-7 + 6-9 + 7-o + 7-o + 7-4 + 8-0 + 77 + 7* + 7'' + 6-9 + 6-4 -60-6 4.8 "O -37-6 20-5 Means ... ... 10 46 338*82 4- 773 - 57 4- 8-5 + 19-4 4-28-9 +44-0 4-55-9 4-75-1 Group 854. A very small spot. Oct. 5-285 6-146 o 10 10 o 10 8 285-6 286-7 4- 8-4 4- 5'7 -6* -6 -50-2 Means ... 64 309 32-27 + 7''5 Means ... 9 286-15 4- 7-05 ... ( Iroup 850. A small spot. Group 855. One or two small faint spot*. Sept. 30-405 Ort. 1 -49 1 2-560 3-399 4-I45 5-285 6-146 7-537 -f A 10 21 ' + IO '4 8 33 20 45 7" 3 *3 45 24 6 3 10 1 1 7 5 7 4 44 16 28 39 '5 12 23 '4 343-8 347-9 348-3 349-3 349-7 350-1 3507 351-2 + 6-6 + 67 4- 6-6 + 67 + 67 + 6-4 + 6-4 + 6-5 -68-9 -50-5 -35-9 -23-9 -13-6 4- 1-9 4-13-8 4-32-6 Oct. 10-171 11-157 12-152 o o 3 18 10 '7 o o 3 1 1 7 18 318-4 320-3 319-2 4-17-1 4-16-2 4-16-5 4-346 4-49-4 -|-6i-6 Means ... ... 1 12 319-30 4-16-60 ... Group 856. A regular spot Means ; M 348-88 + 6-58 Group 851. A very small faint spot. Oct. IO.-I7I 11-157 12*152 '3'4*4 14-285 15-217 16-191 17-323 18-336 19-309 '7 22 3' 96 45 60 54 60 S 1 37 98 37 243 320 336 335 358 326 184 *58 45 *7 26 60 26 3' *7 3' *9 24 26l 169 204 201 189 '73 1 80 .69 1 60 1 68 203-6 204-1 203-6 203-6 202-6 203-4 203-0 202-9 202-6 202-8 4-I2-S 4-12-4 4-12-4 4-12-6 4-12-5 4-12-4 4-12-4 4-. 2 -3 4-12-6 4-12-6 80-2 -66-8 -54-0 Oct. 3-399 4"'45 5-285 6-146 3 3 28 12 10 9 3 2 O 23 323-0 323-2 6 322-1 5 322-5 4-22-7 4-227 4-21-3 + 21-2 -50-2 -40-, 26-1 -'4'4 -37-3 -27-0 -13-9 - '-3 -I-I3-4 4-26-5 4-39'S Mt.-n.= ... 1 ii 3**7o + 21-98 PHOTO-HLIOORAPHIC RESULTS, 1882-1885. X 162 AREAS AND HKLIOGRAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. "Whole Spot. Umbra. "Whole Spot. Group 856 continued. Group 860. A very small spot. 1882. Oct. 20-491 21-196 22-635 55 3' o 207 126 49 49 36 183 H5 214 203-4 203-1 203-9 + 12-3 + 12-3 + 12-7 + 55-8 + 647 + 84-5 1882. d Oct. 18-336 19-309 O O 19 6 '3 6 o 2I2-O Z'47 o -21-5 -21-9 o + 35-9 + 5'"4 Means .... 32 186 203-28 + 12-46 ... Means ... ... o IO 213-35 21-70 Group 857. A very fine extensive group, composed of a great number of small spots. The group undergoes great and frequent changes. Group 86 1. An irregular spot, with two or three small spots close to it. Oct. 18-336 19-309 20-491 21-196 22-635 2 5 32 7' 33 138 216 279 163 5 '4 20 62 38 o 77 '38 243 iSS 303 200-5 2O1-I 2O2'7 203-2 2057 + I5-3 + IS'4 + 15-0 + 15-0 + 14-6 + 2 4'4 + 37-8 + 55'i +64-8 + 86-3 Oct. 13-424 14-285 15-217 16-191 17-323 18-336 19-309 20-491 21-196 22-635 23-535 24-157 l l 46 70 64 'I 8 162 164 241 95 55 78 37 199 447 5'4 637 708 1270 1228 l^ 612 290 209 163 56 63 59 42 9 1 85 85 130 56 42 84 5i 487 619 457 442 409 673 636 5'3 354 225 226 225 161-4 1 6o-O 161-5 161-1 161-9 162-8 '63-5 164-1 1647 168-4 170-2 168-5 + '7'5 + 18-5 + 18-3 + 18-4 + I 8-2 + 187 + 19-0 + 19-2 + 19-1 + 18-9 + 18-5 + 187 -79'5 -69-6 -55-8 -43-2 27-6 Means ... 27 190 202-64 + 15-06 ... '3 3 + 0-2 + 16-5 + 26-3 + 49-0 + 62-5 + 69-1 Group 862. An irregular group, undergoing several changes. On October 21 it consists of two principal spots and a number of small spots, arranged in a straight line. The small spots disappear before October 22. Oct. 19-309 20-491 21-196 22-635 23-525 24-157 '5 142 I2O 37 3 5 59 602 557 202 "3 5 8 76 69 28 33 8 3 321 322 155 119 73 167-3 167-7 167-5 169-0 169-8 170-0 + 10-9 + 10-6 + IO'2 + 10-8 + 10-9 + 10-7 + 4"o + 20'I + 29-1 + 49-6 + 62-I + 70-6 Means 70 439 164-01 + 18-58 Group 858. Two small spots. Means 37 170 168-55 + 10-68 Oct. 16-191 17-323 18-336 o 18 o 72 37 6 o 9 o 55 '9 3 194-4 J 94'3 193-6 + 12-1 + I2-O + I2-I - 9'9 + 4-8 + 17-5 Group 863. Two very small spots. Means * 3 26 194-10 + 12-07 Oct. 19-309 20-491 4 o 1 1 13 2 O 7 8 I47-1 I45-9 -27-9 I 6'2 Group 859. Four or five small spots, arranged in a straight line. Means I 8 146-50 -27-80 Group 864. A rectangular group of small spots on October 22. The group greatly increases in size on the following days, and on October 25 and 26, consists almost entirely of two large spots. Oct. 16-191 I7-323 18-336 19-309 20491 21-196 22-635 '5 34 13 8 2 9 8 132 69 77 75 33 24 8 18 6 o 4 5 67 37 46 56 25 43 193-6 195-3 I94--3 194-7 '957 196-8 I93-8 + 15-2 + I5-I + I5-0 + 157 + I5-6 + I3-6 + 97 -107 + 5-8 + 18-2 + 3I-4 + 48-1 + 58-4 H-74'4 Oct. 20-491 21-196 22-635 23-525 24-157 25-491 6 59 125 384 164 285 35 255 776 1631 1382 1485 3 32 65 209 95 193 20 137 402 886 792 994 121-6 122-5 124-1 124-9 124-6 121-5 + 20-4 + 197 + 19-7 + 2O'I + 20'0 + l8- 9 26-0 -15-9 + 4'7 + 17-2 + 25-2 + 39'8 Means 6 46 194-89 + 14-27 TAKES AT GKKKNWirH, IN ISHIA, AM) IN MAURITIUS, IS THE YKAUs 1882 TO 1885. 163 Areas and Heliographic Positions of Groups of Sun Spots con/i,, DM*. Green" i'-li I'lin-. Arra of An-* fr "I 1 - Mean ttadt of Group. MM ilude roup. LongitU'l' from Central Meridian. Date. Greenwich Ciril Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude fniiii Central Meridian. I'll. lira. Whole Umbra. Spot Umbra. Whole Spot Umbra. Whole Spot < iroup 864 fontit. Group 868 continued. 188 Get 26-535 27-307 18-171 *93 118 55 1196 660 4*9 269 148 '35 not 840 1028 124-5 125-0 125-3 + '9'6 + 19-6 + >9'4 O -r-56'5 4-67-2 + 78-9 1882. d Nov. 1-6*3 *'447 3-402 43 131 o 953 612 *55 *t 4 189 954 8/9 74' 41-6 43-0 41-9 -2a-8 -12-4 -21-4 O + 54'9 +66-1 + 777 Means ... 128 689 123-78 + '97' Means ... 210 1030 43-15 -22-38 Croup 865. A small -!>35'9 138*2 131-9 - 7-6 - 67 - 8-9 - 7 - 8-* 4-I5-0 + *5'S + 54'* + 70-1 +74-1 Oct 16-535 17-307 28-171 '3 21 68 4 "3 ,! o 46 34 '4 109-9 111-7 107-3 + 14-6 + 14-0 + 14-' +4 ''9 + 53'9 4-60-9 Means ... 9 3 109-63 + '4'*3 Mean* ... O 18 134-72 - 8-02 Group 866. Two very small spots. Crimp 870. A larjje regular spot, followed by two clusters of small spot*. The small spota disappear before November 4. 4 22-635 *3 14-157 z; 49' 26 535 34 3' 6 16 i*4 59 3 8 '9 '9 5 o 8 70 36 *7 '3 '337 1348 '347 37'9 '397 + '3'* + 12-8 + !*$ + 9'8 4- 10-0 + '4'3 +27-1 + 35-3 + 56-2 4-7'7 Oct. 27-307 18-171 29-558 30'' 54 31-402 Nov. 1-623 *'447 3-402 4'4'3 5-180 6-412 7''74 8-563 IO 4' 309 '44 *5' '75 '5* 86 7' 74 63 44 10 1 06 404 "54 887 1079 705 584 470 4'5 381 195 *'4 95 39 68 284 I IO >S' 9 s- 78 45 39 45 49 43 21 403 799 1080 687 650 375 299 *43 230 *3' 128 209 100 334'* 33'3 33'3 330-9 33'' 33*'5 332-6 333'9 333-8 333-5 333*4 333-3 333-6 4-16-3 + 15-8 + '57 + '5'9 + '5'8 + '57 + 16-0 + 16-1 + 16-0 + '5'9 + '6-3 + 16-3 + 16-2 -83-6 -76-1 -57-8 -49'3 -3*7 -15-2 Meuis 9 31 136-16 4- 1 1-66 Group 867. A rery small faint spot 3 + 97 4-22-9 + 3*7 + 48-9 + 58-8 + 77'4 Oct. 22-635 o 7 6 7*'5 + 18-9 -46-9 Means 6 71-5 + 18-9 Means "* 433 33^ + 1 6-00 Croup 868. A very fine large regular spot Croup 871. Three very small ipota. Two of these diiappear before October 30. The group i> not seen on October 31 mil NovcmWr t. Oct. 22-635 23-525 *4"'57 25-491 *6'535 27-307 18-171 29-558 30-154 31-402 151 511 237 896 '54 99 8 *97 '473 35' '6*5 301 1732 277 1695 428 1961 307 1658 325 1529 389 3'9 156 216 218 '73 '55 *47 1 86 *37 1318 1 204 1012 1071 1013 999 948 1131 1005 I 112 43-6 44-0 44'3 43'4 43-4 437 42-8 42-8 42-6 42-9 -22-4 -22-5 22-O -22- 4 -22- 4 22'2 22-2 -22-3 -75'8 -637 -55'' -38-3 -24-6 -141 - 3'6 + 147 + 22-4 + 39 4 ' Oct. 29-558 12 59 30-154 5 14 31-402 o NOT. 1-623 2-447 20 6 33 X-o 3 9'6 O o o 12 7'2 -13-6 -14 i -13-0 10-1 10-6 + 30-3 -217 Means 2 1 1 8-27 -i3'57 164 AREAS AND HELIOGRAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS , Areas and Heliographic Positions of Groups of Sun Spots continued. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Jl'oan Latitude of Group. Longitude from Central Meridian. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Group 872. Several small spots in a straight line. Group 876. A very fine spot, and a number of spots arrranged in a straight line above it. These spots undergo several changes, and by November 14 only two regular spots remain. The whole group, therefore, then consists of three regular spots, one of them very large, and another large. 1882. ,, Oct. 30-154 3 1 '402 Nov. i '62 3 2-447 3-402 4-413 5-180 6-412 2 10 33 38 4' 34 27 2 7 32 152 184 209 2 45 158 21 I 5 '9 24 3 33 38 4 4 18 88 114 153 240 208 48 o 5'i 5' 1 5'' 4'9 P 6-4 5'4 o-i o 20'I -19-9 -!9'5 -I 9 '4 -I9- 5 -ig-S 19-6 20-0 o -15-1 + 1-3 + 17-4 -28-0 + 417 + 55'5 + 64-6 + 75-6 1882. d Nov. 4-413 5-180 6-412 7-174 8-563 9-398 10-575 11-549 12-181 I3-I57 14-163 '5 -I 55 16-147 66 120 '47 164 33 3 2 7 412 404 '94 '59 79 75 '4 493 623 1038 941 '337 '574 970 1665 1215 967 74 342 92 120 '55 "9 "3 I 9 I I 7 8 225 234 122 116 77 107 S 2 1163 814 862 653 77' 858 53i 969 760 707 710 485 33i o 2 35'3 236-4 236-1 236-8 236-8 237-8 238-4 238-1 237-9 437-9 237-8 236-3 236-9 o 19-6 -19-5 -'97 19-6 -'9'3 19-0 -18-8 o -75-6 -64-4 -48-4 -377 -19-4 - 7'4 + 8-7 + 21-2 +29-3 +42-2 + 55-4 +67-0 + 80-6 Means ... ... '9 109 475 -19-69 -19-1 -19-2 -18-8 -19-4 19-6 -I9-5 Group 873. A very small spot. Oct. 3 1 '402 Nov. 1-623 2> 447 2 4 O o 74 20 7 '5 48 1 1 4 333-o 334'6 3347 -21-6 -21-6 -21-4 30-8 -13-1 2'2 Means ... ... '39 740 237-12 -19-32 ... Group 877. A regular spot, followed by several smaller spots. Of these latter, all but one disappear before November 9, and that one disappears before November 14. Means ... 5 21 334-10 -21-53 Group 874. A number of spots in a straight line. The middle spots disappear, and the spots at the beginning and end of the line coalesce to form two spots before November 3. Nov. 6-412 7-174 8-563 9-398 10-575 11-549 12-181 13-157 14-163 J5- '55 16-147 I7-I73* 11 77 94 99 102 II 9 78 64 62 32 23 7 98 35 2 483 599 54' 525 489 401 333 220 120 4 2 18 90 69 64 58 67 45 38 43 27 28 '7 161 4 3 361 385 3" 295 284 241 232 1 88 146 100 215-3 214-6 214-8 215-9 217-7 218-1 218-1 218-0 218-4 218-2 218-1 (218-3) -23-0 -22-8 22-2 -23-0 -237 -2 3 -6 -23 4 5 -22-8 24-0 -24-0 -24-1 -24-4 69-2 -59-9 -41-4 -29-3 I2'0 + I' 2 + 9'5 + 22-3 + 36-0 + 48-9 + 6r8 + 75-6 Nov. 1-623 2-447 3-402 4HI3 5-180 6-412 58. 80 96 7' 61 o 331 457 539 355 238 44 3i 45 64 59 66 o 177 2 59 35 2 291 261 125 2'O I"7 2- 3 2- 3 3'4 5 -0 + 19-0 +14-3 + 19-2 +24-8 + 19-0 +38-1 + 19-4 +51-4 + 18-5 +62-6 + 18-8 +80-5 Means ... 44 244 2- 7 8 + 18-98 Means ... | 47 259 217-13 - 2 3-43 Group 875. Several small spots on November 4. ' On November 6 two small regular spots, with several smaller spots between them. Group 878. Several small spots. Nov. 4'4<3 5-180 6-412 7-I74 12 56 68 6 60 z6 3 320 127 8 40 71 It 37 ' 9 < 336 2OI 344' 2 345-2 344-8 345' 2 - 9-9 I0'0 - 9-6 I0'0 + 33'3 + 44-4 + 60-3 + 707 Nov. 6-412 7-174 8-563 9-398 10-575 11-549 3 9 2 5 21 20 24 13 3 57 49 4 8 60 7 1 1 18 '3 1 1 12 26 37 43 3' 26 3' 208-6 208-3 208-7 208-6 208-7 207-8 + I 5 -I + '5-1 + '5'3 + 15-1 + 15-1 + 15-0 -75'9 -66-2 -47'5 -36-6 21'0 - 9' 1 Means 33 I 9 I 344-85 - 9-88 * The photograph taken at Dehra Dim, India, on November 17 appears to be wrongly timed. From a comparison of all the groups of spots common to the photo- graphs of November 16, 17 ami 18, it would seem that the photograph on November 17 was token two hours and a halt earlier than the time marked upon it, corresponding to a difference of i'4 in longitude. The time of the photograph and the corresponding longitudes of the groups of spots have, therefore, been altered from these given in the Greenwich, Observations for 1882, by these amounts respectively ; the decimal of the day being diminished by o d 'io4, and the longitudes of the spots increased by i'4. TAKEN AT OltEENWini, IN INI'IA, AND IN MAURITirS, IN TUB YKAK8 1882 TO 1885. Iftf 1 .is unil BaHogimphic Positions of Groups of Sun Spots continued. Data. OrMUwicli Civil Time. Projected Area of Aua for Qrettp. Mrau Longitude of Group. ilean Latitude of Uroup Lungitudi from Meridian. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. KM Latitude of Group. Longitude Ir.iM Central Meridian. Umbra. Whole Spot. I'n. l.ra Wl,..li- Umbra. Whole Spot Umbra. Whole Spot Group 878 continued. Group 883. A small spot. 1882. j Nov. 12-181 >3''57 '+'63 '4 6 4 38 53 '3 7 3 2 '9 27 8 208-2 206-8 2087 + 14-0 +12-5 + '47 e ~ 0-4 + II-I + 26-3 1882. NOT. 11-549 12-181 10 39 10 6 o 22 6 218-9 228-3 e SI-2 21-0 + 12-0 + '97 Means ... ... 9 28 208-27 +14-66 ... Means ... ... 3 '4 228-60 trio ... Group 879. Two very in.ill faint spota. Group 884. A small regular spot. Nov. I I -549 12-181 13-157 14-163 'S - '55 16-147 >7 - '73* 18-485 19-590 7 8 '5 5 '9 20 '9 34 30 62 36 79 108 105 88 86 103 58 25 8 n 9 10 10 10 '9 20 89 37 59 66 57 45 44 57 38 148-0 148-2 148-7 1487 148-9 '49'4 (H9'5) '49'4 150-0 - 7'o - 6-5 - 7-0 - 7-2 - 7'4 - 7'5 - 7-8 - 7'4 - 7'4 -68-9 60-4 -47-0 -337 Nov. 8-563 2 *3 i 13 233-0 + 20-4 -23-2 Means I 3 233-0 + 20-4 -20-4 - 6-9 + 6-8 + 24-0 + 39'* Group 880. A small spot Means ... ... '4 55 148-98 - 7-24 ... Group 885. A very fine large spot. On November 18 a large portion becomes detached from the principal spot. Smaller portions become detached oil the following days. Nov. 9-398 10-575 i 1-549 2 14 8 1 1 34 3 o 8 9 8 20 1847 186-8 188-0 -10-3 -10-3 - 9'9 -60-5 -42-9 28'9 Nov. I2-l8l '3->57 14-163 '5''55 16-147 17-173* 18-485 19-590 20-439 21-525 22-334 23-377 24-523 2543' o 238 449 672 785 721 1411 105 619 4'2 247 191 '39 o 82 807 1690 2621 3549 4'94 4667 4518 3475 2702 *559 1705 649 73 o 422 468 5'S 497 44 733 588 345 262 183 '94 267 500 '433 1761 2008 2249 2352 2425 2401 '934 1719 1899 1723 1226 320 122-6 I2I-9 121 -8 1217 121 -8 (121-5) 121-1 I2O*4 120-8 120-4 120-4 1197 I2O'I 1I7-6 + 20-4 + '9'5 + 19-1 + '9'2 + 19-2 + 19-1 + 18-8 + 19-0 + '9-' + 19-2 + 187 + 197 + 19-2 + 18-9 -86-0 -73-8 ftr*f Means ... 4 12 186-50 10-17 ihserrat ii/rn for 1881, by these amounts respectively ; the decimal of the day being diminiiheil liy o d 'io4, and the longitudes of the s|iota increased by i*'4. 166 AREAS AND HELIOGRAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian, Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Group 887. Several small faint spots. The preceding spot becomes larger and darker by November 19, and the other spots disappear. Group 890. Two regular sputs close together. The preceding spot shows a tendency up, and several small spots form round the group on November 25 ai ing days. The smaller spots disappear before December i, leaving second of the two original spots. to break id follow- only the i88 2 . d Nov. 15*155 16-147 I7-I73* 18-485 19-590 20-439 8 8 67 o 1 1 54 33 56 215 97 44 4 4 3 54 24 28 18 35 '72 124 99 o >74'5 175-0 ('74'7) 175-2 177-1 176-9 o + 18-8 + 19-0 + 19-2 + 18-9 + 19-2 + '9'4 o + 5'2 + I8'7 + 32-0 + 49 -8 + 66-3 + 77-2 1882.,, Nov. 19-590 20-439 21-525 22-334 23-377 24-523 25-431 26-478 27-547 28-539 29-159 3o-i77t Dec. 1-175 73 70 90 89 7' 116 126 69 72 68 36 1 1 8 35" 455 377 573 579 507 467 362 344 224 167 97 39 '35 80 73 61 42 64 69 39 45 50 30 '3 i7 649 517 308 395 34 6 281 255 206 217 166 141 U5 82 o 38-8 38-9 37-9 37-2 37-1 367 36-4 36-, 35-5 34-9 33-8 (33-5) 32-8 -227 -22-5 -22-5 22'Z -22-3 -22-8 -22'7 -22-8 -23-3 -2 3 -8 -23-6 -23-0 -22-8 o -72-0 -60-8 -47-5 -37-5 23-8 Means ... 15 79 '75-57 + 19-08 ... - 9-' + <' 5 + 16-1 + 29-5 + 42-0 + 49' 1 + 62-1 + 74'6 Group 888. Two small spots. Nov. 16-147 17-173* 18-485 19-590 20-439 21-525 22-334 23-377 24-523 25-43I 7 13 64 61 12 6 37 124 223 133 73 73 7i 9 33 23 10 1 1 39 33 6 4 49 104 '37 72 38 38 37 5 24 22 89-0 (89-9) 90-6 91-1 90-2 90-6 89-0 91-7 90-6 91-7 - 6-0 - 6-3 - 6-2 - 7'1 - 7-0 - 6-9 - 8-4 -10-5 io'6 10-8 -67-3 -52-8 -34-8 -19-7 Means 55 283 36-12 22-85 9' 5 + 5'2 + 14-3 + 30-8 + 44-8 + 57-8 Group 891. Three or four small spots. On November 24 two regular spots, of which the following one disappears before November 29. Nov. 22-334 23-377 24-523 25-431 26-478 27-547 28-539 29-159 30-177! o 7 43 34 9 4 17 8 18 70 136 102 105 15 5 46 '9 7 32 22 5 2 9 5 o 27 70 ? 64 58 8 3i 26 12 5'i 4-0 4'3 3'2 6-4 ''4 3'8 5'3 (3-5) 19-2 69-6 -20'3 -56-9 Means IO 53 90-44 - 7'9 8 Group 889. A regular spot. -20- 7 20-6 -21-8 -4i-5 -30-7 -13-6 - 4-6 + 10-9 + 20-6 + 32-1 Nov. 16-147 17-173* 18-485 19-590 20-439 21-525 "'334 23'377 24-523 25-431 26-478 27-547 15 18 73 55 44 2 7 26 17 30 28 H 2 86 137 215 215 182 1 08 166 167 140 88 42 26 27 18 5 3' 23 '4 13 9 '9 22 16 6 150 136 146 123 96 55 85 92 89 69 48 61 82-8 (82-9) 83-0 82-7 82-9 82-9 83-0 83-0 83-4 83-7 837 83-7 + I 1-2 + I0'9 + 10 8 + 9'9 + 10-3 + 10-6 + 10-6 + 10-7 + 10-9 + 10-9 + 1 ro + 11-3 -73-5 -59-8 -42-4 -28-1 i f,-R 20-1 -22-3 Means 9 44 4-1 1 20-72 ... ~ 2'5 + 8-3 + 22-1 + 37-6 +49-8 + 637 + 77-7 Group 892. ' Three or four small faint spots. Nov. 22-334 23-377 24-523 25-43I 6 40 80 48 56 274 326 275 10 4' 56 2 9 99 279 232 ,65 I'O 0-8 I '2 1-6 + 13-8 + 13-7 + '3'3 + 13-3 -737 -60- 1 A f6 Means ... ... 2 1 96 83-14 + 10-76 44 -32-3 * The photograph taken at Delira Dun, India, on November 17 appears to be wrongly timed. From a comparison of all the groups of spots common to the photo- graphs of November 16, 17 and 18, it would seem that the photograph on November 17 was taken two hours and a half earlier than the time marked upon it, corresponding to a difference of i'4 in longitude. The time of the photograph and the corresponding longitudes of the groups of spots have, therefore, been altered from those given in the Grecnvnch Observations for 1882, by these amounts respectively ; the decimal of the day being diminished by o d -io4, and the longitudes of the spots increased by i'4. t The photograph taken at Dehra Dun, India, on November 30 appears to be wrongly timed. From a comparison of all the groups of spots common to the photo- graphs of November 29, 30 and December i, it would seem that the photograph on November 30, was taken two hours and a half earlier than the time marked upon it, corresponding to a difference of i'4 in longitude. The time of the photograph and the corresponding longitudes of th e groups of spots have, therefore, been altered from those given in the Greenwich Observations for 1882, by these amounts respectively ; the decimal of the day being diminished by o d TO4, and the longitudes of the spots increased by i*'4. TAKEN AT OliEFAWH II, IX IXI'IA, AND IN MAURITIUS, IN THE YEARS 1882 TO 1885. 167 Kit... Greenwich Civil Time. as and Heliographic Positions of Groups of Sun Spots eoiitim Projected Area of f.ir Group. Mean 1. Ii-ltllili Km Latitude of Group. Longituili from Central Meridian. Date. Greenwich Civil Time. I'ruj'vtr.l A rea of Area for Group. Mean . Longitude Mean Latitude of Group. Loi-gitnd. from Central Meridian. Umbra. Wholr Spot I'mlira, Whole Spot 'iroup. Umbra. Whole 8pot Umbra. \VI,.,V Spot of Group. ip 892 continued. Group 895 ctmtinued. 18X2. ,, N "''478 27-547 28-539 29-159 30-I77 1 15 2O 23 '3 9 56 112 5 >5 8 10 12 7 47 9 58 27 9 D 4'2 4'5 4'8 (4-9) ++++ + SO SO OS 00 00 O -5-8 - ''5 + H-9 + i9'8 433-5 1882. Nov. 28-539 29-159 30-177* 1 ><:. 1-175 18 '3 6 9 o 33 17 '3 '3 7 10 7 3 5 o ll 9 7 7 4 337 330-6 <3J''0 33'-' 330-2 o + 5'4 + 15-8 + '57 + 15-8 + 15-8 . 22-J -14-1 - 0'3 + 12-9 + 26-J Moans ... ... 19 105 3-06 +13-12 ... Means ... 5 24 330-78 + 1569 ... Group 893. Three or four small spot*. On November 26 only one ipot remains. Group 896. A small |K)t. Nov. 23-377 24-5*3 25H3' 16-478 27-S47 1 1 26 6 46 9 55 '5 10 6 o '7 I 25 5 35 12 1 1 & 5 66 9 66-4 67-2 677 + 24-3 + 3'6 + 24-1 +21-1 1-24-0 +32-5 + 24-0 +47-1 + 23-5 +617 Nov. 26-478 *7'S47 10 2 35 20 7 2 26 21 66-3 67-4 + 10-9 + IIM + 4^3 + 61-4 Means ... ... 5 24 66-78 + M-OO ... M 'Mil- ... 7 18 66-54 + 23-98 Group 897. Four or five small spots on November 16. The group rapidly increases in size mi the following days, and on November 19 forms a long straight line of spots, of which the last is the largest On December 3 only the last spot remains. (iroup 894. A fine group, composed of a great number of spots very irregularly arranged. The group mi H nit changes, the preceding portion tending to increase, the following t<> ilimiiiish. Nov. 26-478 l 7-547 28-539 29-159 30-177* Dec. 1-175 2-152 3-180 56 64 9' 47 '9 ii 4 '77 4S 422 285 248 23* 75 >4 II 47 24 10 8 10 3 II 1 221 217 , 4 6 12 9 12 9 4 8 I 1 343-4 344-o 3429 343' (34*7) 342-2 3407 341-2 + 9' 8 + lO'l + 10-6 + 10-7 + 11-2 + .'3 + IZ'O + 12-1 -366 22-0 10-0 - '7 + '1-3 + 240 + 3-8 + 49 '4 Nov. 23-3-- 24-523 2;!-4?i 26-4-s 27-547 28-539 29-159 30-1--* Dec. 1-175 2-252 3-180 61 208 '75 190 '3' 60 36 65 28 o 3 324 800 812 942 910 647 668 658 250 78 o 61 '53 104 100 66 3' '9 40 21 ; 320 590 48! 498 462 329 359 402 185 82 3493 34 6 7 347-* 348-6 349+ 349J 349'5 (350-6) 351-6 350-9 352-9 - 9'7 - 8-6 - 8-0 - 8-1 - 8-2 - 8-1 - 8-0 - 7'9 - 8-1 8-1 -71-6 -59-1 -46-7 -31-4 -16-6 - 3-6 + 4-8 + 19-2 + 33'4 4- J.7"O Means ... 22 '27 342-51 + 10-98 ... - 87 4-61-1 Group 898. Two considerable spots, with several small spots between them. Means 54 338 349' 6 4 - 8-34 ... Group 895. A small regular spot. Nov. 27 547 28-539 29-159 30-177* Dec. 1-175 90 77 86 40 || 205 43' 5'S 35 "4 50 "3 6j 39 34 "4 273 37 337 210 *47 26-8 27-2 (27 3''5 -17-5 -17-2 -17-2 -'7'S -6-5 + 18-7 + 33'9 + 42-5 + 55'* + 73'3 N..v. 24-523 25-43' 26-478 27-54- * TI.e photoj graph! upon i fore, 1 O^'IO^ o 8 8 4 Tij h ! ll t, corres wen alte , and the ll 27 '7 I 3 68 72 21 I I 330-9 330-8 330-6 331-0 + '55 + 15-8 + '5'7 + '57 -74-9 -63-1 49 4 -35-0 Mi-aiis ... 60 26l 27-48 17-18 en at Dehra Dun, India, on N"vi-mt>fr 30 appran to be wiongly timed. From a comparison of all the groups of spots ' onmi"n to tlie [photo- mber 29, 30 and December i, it wnuld set-m that the photograph on November 30, wax taken two hours and a half earlier than the time marked xmding to a difference of i4' in longitude. The linn- of the |iliotogra|>h and the corresponding longitudes of the group* of s|KiU have, there- those givi-n in the '/' ''.sfrraiimu for 1882, by these amount H spectively ; the decimal of the day l>eing diminished by longitude* of the spots increased by i''4. 168 AREAS AND HELIOGRAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Group 899. Several very small spots in a straight line. Only the first and last remain on November 29, and of these the first disappears before December i. Group 903 -continue'/. 1882. Dec. 9-502 10-175 1 1-169 '9 35 6 283 228 126 17 44 23 2 57 284 380 o 263-8 265-4 266-7 o -13-5 -14-1 -14-1 o +55-4 +65-7 +80-3 1882. d Nov. 27-547 28-539 29-159 30-177* Dec. 1-175 2-252 O 25 9 '3 4 o 39 104 69 36 22 15 o 2O 7 8 2 O 49 89 S 2 23 12 8 300-9 3OI '2 299-0 (300'3) 2967 296'! o -17-2 o -65-1 '7 3 -17-3 -I7-4 i 8-0 -18-6 5 1 7 -457 -31-1 -21-5 - 7'8 Means H 150 262-24 -14-50 Group 904. A small regular spot. Means ... 6 39 299-03 -17-63 Dec. 6- 1 68 7-160 8-179 9-502 10-175 7 8 9 9 o 31 39 4' 1 12 7 5 o 54 4 3> 1 1 3 180-1 181-9 180-4 180-8 180-9 + 18-7 + 18-5 + 18-4 + 17-9 + 18-1 -72-3 Group 900. Six spots in two clusters on November 30. Three spots on December i. -57'4 -45-5 27-6 -18-8 Nov. 29-159 30-177* Dec. 1-175 3 7 15 '3 74 83 2 6 '9 10 69 i ii 26-1 (4'7) 23-9 26-0 + 4I-4 + 53-3 + 65-7 Means 6 28 180-82 + 18-32 ... 247 -23-9 Group 905. Two very small spots close together. Means 9 63 24-90 -24-87 Dec. 7-160 o 6 3 214-7 + 7'5 24-6 Group 901. Several very faint small spots. Means 3 2147 + 7'5 Group 906. Two spots. The following spot disappears before December n. Nov. 30-177* 4 28 333'S + 11-5 + 2-1 Means ... 28 333-5 + ii-5 Dec. 8-179 9-502 10-175 11-169 12-262 15 34 8 5 o 61 "I 46 22 6 8 18 4 3 3i 46 25 13 5 218-2 219-6 220-9 221-5 221-9 - 7'' - 77 + II-2 + 21-2 + 35"' + 49'9 Group 902. A very small spot. - 7'2 - 7'i - 6-7 - 7'o Dec. 2-252 5 o 8 233-6 + 2O'O -70-3 Means 7 24 220-42 - 7-02 Means ... o 8 233-6 + 2O-O Group 907. A regular spot, followed by several smaller spots. These latter have all disappeared before December 14. Group 903. Several small spots. The group undergoes constant changes. Dec. 8-179 4 59 42 29 40 '5 16 167 253 284 280 142 4 4 1 26 16 21 i7 117 156 '55 144 74 163-5 165-3 165-6 165-7 165-4 165-0 -j-IO'2 + 9'9 + 10-6 4-n-i + i ro + 10-7 62-4 -43'i -34-i -20-7 - 6-6 + 8-4 Dec. 5-160 6-168 7-160 8-179 o o 23 8 44 58 73 53 o o 12 5 2 3 30 40 34 256-1 258-7 262-3 2627 -14-7 -I5-3 -14-9 -14-9 - 9-6 + 6-3 + 23-0 + 36-8 9-502 10-175 11-169 12-262 I3'433 * The photograph taken at Dehra Dun, India, on November 30 appears to be wrongly timed. From a comparison of all the groups of spots common to the photo- graphs of November 19, 30, and December i, it would seem that the photograph on November 30 was taken two hours and a half earlier than the time marked upon it, corresponding to a difference of i'4 in longitude. The time of the photograph and the corresponding longitudes of the groups of spots have, therefore, been altered from those given in the Greenwich Observations for i88z, by these amounts respectively ; the decimal of the day being diminished by o d 'io4, and the longitudes of the spots increased by i'4. TAKEN AT UKKKNWICII, IN I.NDIA, AND IN MAUKITIU3, IN TIIK YBAKN ISS'J TO 1885. 169 Areas ami Heliographic Positions of Groups of Sun Spots contii. l>it.-. Qnsowicfa Civil Time. 1'roj. AM a of Area for Group. M- a L.niK'itude of Group. Mran Latitude of Group. Longituili from Meridian. Date. Greenwich Civil Time. Pmj. Area of Ares, for Group. M..,,. l-ongitnde of Gronp. Mran latitude of Gronp. Longitude from Central Meridian. Umbra. Whole Spot. Umbra. Whole Spot Umbra. Wr." 1 ' Umbra, Spot. Whole Spot. Group 907 runt in Group 912. Two very small fniut spot*. |8K2., 14-289 15 : 16-158 4 44 39 '3 O 5 3 24 H 10 o 166-6 1 66-0 166-9 + I l-l 4-ir6 + 11-2 + 21-2 4-33-6 4-46-I 1881. d Dec. 15-173 16-158 17-191 O O O 4 '4 16 o o 3 '3 32 180-2 178-8 182-3 o 4- *7 4- *'i 4- 2-0 + 47-8 + 58-0 + 75'* ills '4 80 65-56 4-10-82 Means ... ... o 16 180-43 -1- 2-27 ... ( iroup 908. A large spot, with two r,mi|uiiits ap)>ear cetlini; an.l following the large s|H>ts on December 13 and following ( .11], f,,riii- ^traiglit line of i><>ts. The spots in tin- i tlip line disappear before December 16. The preceding clutter d before December 10. xith pi.-. ays. ami ni. Mlo of - .[.;. ii- Group 913. A group of four or fire spots irregularly disposed. The group diminishes in siz- after December iS, and only two small spoU remain on December it. Dec. 10 I 1*169 I 2-262 "3433 14-289 >5'273 16-158 17-191 208 19-452 20-422 '3 3 74 'z> 3' 3 1? 33 29 o 127 3'S 481 535 454 611 635 363 335 '37 40 42 52 66 86 '9 '7 3' 18 20 22 4'7 437 428 366 *73 333 335 200 20* I0 5 35 1191 1 19-1 1187 1 1 8-0 118-1 119-8 121-8 123-2 123-1 124-1 117-9 + 18-8 + I9-0 + 19-I + '9'4 + 19-8 + '77 -T-16-7 4-I5-4 4-15-3 4-' 4'9 -)-i 8-0 So 6 -67-3 -53-3 -38-6 -27-3 -12-6 + i-o -r 16-1 + 29-3 4-46-8 4-53-3 Dec. 16-158 17-191 18-208 19-452 20-422 21-506 22-508 5 29 43 77 4 '5 7 27 244 368 276 205 45 7 18 25 4 20 8 5 21 '55 205 '4' 105 *5 45 72-2 70-2 70-2 69-9 71-7 73-8 72-9 4-10-1 4-10-4 4-10-3 4- 9'8 4- 9'9 4- 8-9 4- 9' 8 -48-6 -36-9 -23-6 - 7'4 4- 7' + 23-5 + 35'8 M ean - ... ... 7 100 71-56 4- 9-89 Means ... 34 285 120-26 +17-65 Group 914. A small regular spot. Group 909. Three small spots. l)ec. 12-262 ' 3H33 4 o 44 8 4 38 10 221*8 219-8 4-24-8 4-25-1 4-49-8 + 63-2 Dec. 19-452 20-422 o '9 3 48 3' 23 *3 3 8 o 9 47 4 61 ,48 '36 132 95 67 84 64 27 ,1 116 8 20 23 29 >7 12 12 2 5 8 61 8 "3 57 103 81 S 1 35 43 S 6 23 '$* 10 2-8 3'2 24 3'5 2-6 2-6 3-0 3-5 37 1-6 3' 1 3-o 359-4 -'53 -15-5 -74-5 -6r+ Means ... ... 2 24 220-80 4-24-95 ... 21*506 22-508 23-530 24-183 25-158 26-314 15-1 -15-2 -'5'4 -'5-3 -'5'4 -'5'7 47 9 -33-6 21-0 Group 910. Several small spots. The group undergoes frequent changes. -12-4 + 0-8 + 16-6 -r-27'9 4-39'* 4-55'S + 677 + /6-S Dec. 12-262 '3>33 14-289 15-273 16-158 5 9 '3 1 1 6 45 9* 81 33 O 3 5 9 10 3 24 54 56 3 173-5 ,-4-8 I74T '74'3 176-6 4- 87 + 9-5 4- 9'9 4-10-5 + I0'l 4- i-5 + 18-2 4-29-3 +41-9 + 55-8 28-178 29-302 30-238 31-198 1 J 7 12-O 12-O -11-3 -11-6 M.'-in- ... 5 64 2-65 14-28 Means 5 33 '74-78 4- 974 Group 915. A very small spot. <>ronp 911. A small spot. Doc. 13-433 | '4-189 16 18 o '4 *3 209-3 210-2 -37 -24-2 + 527 + 64-8 Dec. 21-506 8 18 5 10 19-1 4- 6-9 -31 2 Means ... ' ... ... '9 20975 -*3'95 Means ... 5 10 19-1 4- 6-9 PHOTO-llELIOORAI'HIC 135 10-257 11-168 62 90 35 3* 28 '9 >5 396 307 *7* 209 163 93 78 3* 47 20 21 *3 21 *7 205 63 'S3 139 '35 104 "44 e 213-6 213-6 2137 213-7 *3'3 213-8 213-0 -17-2 18-0 18-0 -18-1 -18-5 -18-5 18-7 - 3'5 -r-13'5 + *3'o -f-39'4 + 5*'3 + 63-6 + 74-9 Means ... 47 249 283-64 ,fi j-A M rails ... ... 3' 167 *'3'94 ~'7'93 ... Group 926. A ery small spot on 1881 December 30. Other spots appear on the following days, ami the group rapidly increase* in size until 1883 January 3. After passing the central meridian ou 188} January 4, the group begins to decrease, and entirely disappears before January 8. Group 928. Two small spot* on 1881 December 31. The preceding spot has disappeared before 1883 January i. 1882. Dec. 30-238 31-198 1883. Jan. 1*156 2-429 3"'S5 4-190 5-170 6-463 7-181 o 8 5* IOZ 63 49 7' 'S 12 8 66 "5 453 336 233 128 72 44 6 34 55 33 *4 37 9 9 9 54 39 H5 "73 117 121 43 30 231-4 230-1 231-1 231-9 232-9 233-1 *33'o *33'4 Z33-5 - 9'5 - 9'9 10-0 10-2 - 9-8 -63-9 -5 2 '5 -38-9 -21-3 -10-8 + 3'i + '5'9 + 33'3 +4*- 1882. Dec. 31-198 9 1883. Jan. 1*156 o 74 '9 9 o 74 *9 340-3 338-9 + '3'9 + 14'' + 57'7 + 68-9 Means 5 5* 339-60 + 14-00 10-1 -10-7 10-8 A (mail regular ipot on direction of the s January 4, and gra Group 929. 1881 December 31. It gradually becomes elongated in the ilar equator, breaks up into aereral small spots on 1883 iually disappears. Means ... ... *3 103 232-27 lO'Il ... Group 927. A regular spot 1882. Dec. 31-198 1883. Jan. 1-156 2-429 3'>55 4-190 5-170 6-463 7-181 18 39 *4 9 o o o 70 101 172 109 54 8 36 7 25 22 ?0 5 o o '59 "3 '35 74 3 4 '9 4 204-8 204-8 204-2 204-3 204-0 203-9 206-0 203-9 20-9 20-8 21-2 20-8 20-9 20-6 -20-4 22'O -77-8 -65-2 -49-0 -39'4 26-0 -13-2 + 5'9 + 13-2 1882. Dec. 30.238 31-198 1883. Jan. 1-156 2-429 3''5S 4-190 '9 26 *7 65 48 54 57 '7' 205 287 296 34* 57 35 *4 4* *9 *9 67 "7 83 189 176 83 2,4-8 2147 214-9 214-1 214-1 2139 -18-4 -18-1 -'7'4 -irs 80-5 -67-9 -55-1 -39-1 17-2 -'7-5 -i 6-1 Means 12 69 204-49 -20-95 - 172 AREAS AND HELIOGRAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Croup. Mean Latitude of Group. Longitude from Central Meridian. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Group 930. A large group composed of a great number of spots very irregularly disp decreases rapidly after it has passed the central meridian. osed. It Group 934. Irregular spot. 1883.,, Jan. 12-159 13-156 14-160 15-521 16-598 17-159 18-157 19-183 20- 21-179 22-350 23-425 '9 28 4 90 70 55 64 86 No pho 68 40 92 237 300 428 5'5 4'9 489 483 tograph. 372 245 53 45 34 33 56 39 3 34 47 (49 5 42 o 221 283 249 265 285 224 258 268 270 272 255 98 487 48-9 487 48-8 49-1 49-3 49'5 49-6 49-5 49'3 49'5 49-1 + 13-8 -76-4 + 13-8 -63-1 + 13-6 -50-1 -1-13-3 -32-0 + 12-7 -17-6 + 13-3 - 9-9 + 13-2 + 3-4 + 13-4 +17-0 + 13-4 +3') + 13-4 +43" + 13-8 +58-6 + 13-8 +72-3 1883. Jan. 1-156 2-429 3-155 4-190 5-170 6-463 7-181 8-423 9"435 10-257 11-168 3^ 140 104 105 127 140 83 22 53 23 1 1 186 745 733 1001 1 06 1 880 585 129 155 220 25 79 144 84 66 7i 7i 43 12 34 1 6 1 1 46, 802 602 633 593 447 299 72 97 162 24 o 192-0 191-2 192"! 193-0 193-2 194-8 194-4 97'4 I97-5 196-7 196-3 o + 5'2 + 4'9 + 5'3 + 5' + 5'3 + 5'0 + 47 + 4'8 + 4'9 + 4'4 + 4'9 78-0 62-0 -5, -6 -37-0 - 2 3'9 - 5'3 + 37 + 2VI + 36-5 + 4 6 '5 + 58-2 Means ... 57 38i 194-42 + 4-95 ... Means ... 38 246 49"'7 + 13-46 Group 931. Two small spots. Group 935. A small faint spot. Jan. 13-156 o 7 o 4 113-2 + 24-6 + 1-2 Jan. 9-435 10-257 11-168 o 23 5 1 1 36 21 o 12 3 5 '9 1 1 152-7 151-9 152-0 + IO-2 + 10-0 + 97 - 8- 3 + 17 + '3'9 Means o 4 1 13-20 + 24-60 Means ... ... 5 12 152-20 + 9'97 ... Group 936. Two small spots on January 14. The following spot disappears before January 15, and the preceding spot is much reduced in size. Group 932. Two very small spots close together. Jan. 14-160 15-521 16-598 17-159 33 o o o 75 12 1 I 4 19 o 4 2 73-o 6 76-5 6 77-6 2 78-3 + 87 + 8-4 + 8-5 + 8-6 -2 5 -8 - 4'3 + 10-9 + I9-I Jan. 10-257 2 4 i 3 108-1 + 25-5 -42-1 Means ... ... i 3 108-1 + 25-5 ... Means ... 5 14 76-35 + 8-55 ... Group 933. A large regular spot, followed by a number of smaller spots. Group 937. A small spot Jan. 16-598 o 16 o 10 IOO'2 + 3'2 433-5 Jan. 10-257 11-168 12-159 13-156 14-160 15-521 16-598 17-159 18-157 19-183 20- 21-179 39 7i 'i5 149 176 194 276 129 125 '79 No phc 39 359 55 711 1023 1256 1 190 I57 8 1563 11269 1148 tograph 343 67 75 88 92 95 97 140 67 72 126 (93 60 620 540 54' 633 682 599 805 818 735 797 646 494 76-5 75-8 76-1 76-1 76-6 75-8 75'3 75-2 75-9 76-5 76-5 76-5 - 8'3 - 8-6 - 8-6 - 87 - 87 - 9'5 - 9'4 - 9'3 - 9'4 - 97 - 9'4 - 9' 1 73 7 -62-3 -49-0 -35'9 22'2 - 5' + 8-6 + 16-0 + 29-8 + 43 '9 + 57'o) + 70-2 Means o IO IQO'2 + 3-2 ... Group 938. Two spots. The following spot breaks up into three or four divisions on January 19. The preceding spot has divided into two portions by January 21, and the following portion disappears before January 23. Jan. 16-598 17-159 Y Q. i -7 54 54 45 98 3i7 356 539 489 54 45 30 55 315 292 35' 273 6-6 67 6-4 7-0 10-2 - 9'9 10-0 -60-1 -52-5 -397 -25-6 Means 89 659 76-07 9-06 IO 1 j/ I9-I83 - 9-9 TAKEN AT GREENWICH, IN INMA, AN!> IS MAURITIUS, IN THK YtAKS ISH'J in 1 SSfi. 173 Areas ami Heliograph!. Positions <>i (iniiijis of Sun Spots co/i/i,. Dotr. QrMowieh Civil Time. Pr..j. Area of Area for h. 1 66 120 75 (36 16 1 10 I 7 8 3 6 * 46 67 6-4 8-2 10-3 10-2 -10-4 -IIJ -H'4 -27) + o-i + '7'3 + 33'5 1883- a .hill. 16-430 27-100 9 '3 53 48 7 3 4' '49 o 346-4 347-8 ->3'3 -I3-I + 49'* +60-8 M'M!;s ... ... 32 2OO 7-29 10-41 Means 10 95 347'' -i3'* Group 939. Two small spots cloM to each other ou January 11. Tiny tend to separate on the following Jays. Group 944. A number of very small spots following one another in a somewhat curved line. The group undergoes many minute changes. Jan. 21-179 22' 35 *3-4*5 12 '9 16 47 138 66 7 10 ! *7 75 38 355-0 +18-3 353-1 +18-9 353-0 +18-9 -11-3 + *'* + 16-2 Jan. 26-430 27-200 28-199 29*201 18 10 o o '34 1 11 104 37 '9 '3 o o 93 68 59 '9 157-1 256-8 *54'5 254-0 + 10-4 + II-I + 11-9 4-n-o -40-1 -30-1 -19-5 - 6'7 Means ... 9 47 3537 +i8'7 Group 940. A group of five or six ipota arranged in a circle on January 11. The preceding spot alone remains on January 13. Means ... ... 8 60 255-60 4- 1 1 -60 ... Group 945. A very small spot .Ian. 21-550 *3+*5 '5 149 31 118 41-5 65 19 83 442 12-0 +5O-6 -ll-l -(-67-4 Mi- ins 25 lot 42-85 -ii-?5 Jan. 26-430 o n 9 140-9 - 9-1 -56-3 Group 941. A regular spot. Several very small spots are seen close to it on January 16. Means o 9 240-90 9-10 ... Group 946. A small regular spot Ian. 22 350 *3'4 I; ; *4 *5 26-430 27'2OO 28-199 29*201 3'43 3 ''422 l-Vb. i 161 2-194 J'47 *3 26 No pho No plio 57 28 38 36 36 28 37 '9 5 74 '*3 tograph. tograph. 266 217 I 9 2 l6 7 203 109 I2 9 99 *3 39 7 (9 (3' 33 '5 21 20 22 '9 3 22 12 129 128 "37 '45 '54 "9 103 92 124 77 107 "5 57 276-9 276-4 276-1 275-8 *75'5 275-K 275-1 274'5 273-6 272-9 273-0 272-6 271-8 -27-8 -27-6 -7'S -*7'3 -27-2 -27-2 -27-1 -26-8 26-9 -6-8 -26-8 -2/-0 2 -'(> -74-0 60-4 -47-5) -34'6) -21-7 1 I'Z 4- 1-1 4-13-8 + 29-. 4-41-5 + 5'"3 4-64-5 4-79-9 Jan. 17-200 28-199 29-101 30-430 31-422 Feb. 1-162 2-194 3'4'7 7 '9 33 20 *3 20 9 o 37 70 120 '47 90 73 36 1 1 3 20 25 12 '3 1 1 4 o 68 75 9* 90 49 38 18 6 2121 ii 1-6 in 7 210-9 210-7 110-9 210'2 2IO'l -'9'3 -19-3 -19-1 -19-3 -19-5 -19-5 -19-8 -19-8 -74'9 -61-4 -49-0 -33-6 -20-7 -10-8 + 2-1 4-18-3 7 u Means ... 12 55 2 1 1 -04 -19-4; Mi-in- *5 "4 274-62 -27-21 ... up 947. A cluster of very small faint spota. Group 942. A small faint spot. Jiin. 23-425 8 o 11 268-6 -14-1 -68-2 Jan. 28-199 o '9 O 10 2667 -14-5 - 7'3 Means ... o ii 268-60 14-10 Means ... 10 266-70 -14-50 174 AREAS AND HKLIOGRAPHIC POSITIONS OF GROUPS OF SON SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Group 948. Two small spots on January 29. A third is seen on January 30, and the disappear before January 31. first two Group 954. A regular spot. 1883. d Jan. 31-422 Feb. 1-162 2-194 3'427 4-509 5-562 6-520 7- 1 60 8-164 9-545 10-172 n'547 12-164 o 49 54 3 73 98 65 60 39 65 !i 7 77 232 234 318 339 382 369 358 284 272 169 107 80 64 46 54 4' 52 34 32 2 3 48 3' 27 20 174 304 2O2 208 '93 204 '95 192 1 66 199 148 181 231 155-8 156-2 156-2 155-8 155-6 155-2 155-1 155-5 155-6 155-2 155-8 155-8 156-5 + H-8 + 11-7 + 11-6 + 11-5 + 11-4 + 11-5 + II-2 + II'3 + II-2 + 10-6 + io-8 + n -a + 11-5 o -75-6 -65.5 -51-9 -36-1 22"! - 8-6 + 4' + 127 + 26-1 + 43-8 + 52-7 + 70-8 +79-6 1883. a Jan. 28-199 29-201 30-430 31-421 Feb. 1-162 21 23 4 o '9 93 96 '9 25 o 1 1 '5 3 o 10 5' 60 16 26 274-9 274-2 275-8 279-8 281-0 o + 11-4 + 12-9 + 12-4 + 11-9 + 12-1 + 0-9 + 13-5 + 3I-3 + 48-4 + 59'3 Means 6 33 277-14 + 12-14 Group 949. Three small spots. One of them disappears before January 30. Jan. 29*201 30-430 o 3 86 15 2 46 8 263-5 263-7 + I5-0 + I4-3 + 2-8 Means ... 36 200 155-71 : +11-33 Group 955. Three or four small spots on February i. The group increases in size in tha follow- ing days, and lengthens out into a long line of spots. It begins to diminish after crossing the central meridian, and gradually fades away. . Means i 2 7 263-60 + I4-6 5 Group 950. Two small spots. Feb. 1-162 2-194 3'427 4-509 5-562 6-520 7-160 8-164 18 42 57 84 88 101 45 3 117 215 469 442 433 437 37 121 '4 26 3i 44 48 57 28 10 86 131 255 232 233 252 192 9 1 175-4 176-3 176-5 177-4 177-1 176-3 177-0 176-6 -23.3 -227 -46-3 -31-8 -15-4 - 0-3 + 13-3 + 25-2 + 34-2 4 47'' Jan. 30-430 II '3 311-1 -16-3 + 66-6 Means ... '3 31 1- 10 l6'3 -22-3 -23-2 23-2 Group 951. Two very small faint spots. -23-2 -23-' 23-0 Means 32 184 176-58 23-00 Jan. 30-430 o 15 O 8 267-1 -I 3 -I + 22-6 Group 956. Three small spots on February 2, of which only the largest remains on February 3. Means O 8 267-10 I3 - IO Group 952. Two small faint spots. Feb. 2-194 3'427 3 5 24 o 6 5 48 268-1 268-5 21-0 -21'3 + 60-0 + 76-6 Jan. 30-430 o '9 o 12 2037 xn-8 9 Means ... 3 49 268-30 Means o 12 203-70 - 3'9 ... 2115 Group 957. A faint spot of irregular outline. Group 953. A small faint spot. Jan. 30-430 ii 8 I 977 - 8-2 -46-8 Feb. 2-194 o 20 o 10 201-3 - 5'3 - 6-8 Means o 8 197-70 8-20 ... Means o 10 201-30 '" "1 TAKEN AT GREENWICH, IN INDIA, AND IN MAURITIUS, IN THE YEARS 1882 TO 1885. 175 Areas and Heliographic Positions of Groups of Sun Spots continued. Date. wich Ciril ! l'r..jeotd Area of Area for Group. M 1, .!;_<: ! f Croup. Mean Utitude . roup. Luu git mli from tral Mi-riilian. ll.ll- Greenwich Civil Time. Projected Area of Area for Group. M. l/.Ti/itu-l- of Group. Mean Latitude of Group. bHkjtast !: Central Meridian. Umbra. Whole S,.,t 1 n.t.ri. Whole Umbra. Wh..!- Bpofc i 1 'nil.r.i. Whole Spot Group 9; 8. A imall faint spot Group 96 continued. 1883. u Feb. 18-243 19-204 10-157 10 I I O 98 110 12 '9 17 o t |6 9 48 57-0 56-6 56-2 ~'7'4 -7'4 17'? + 60-I + 72-4 + 84-6 1883.4 1-Vb. 6-520 O it O '3 101-2 o + 4-8 -499 Meant) ... O '3 IOI'2O 4- 4'8o Means ... *5 162 58-08 -17-67 ... Group 959. Two large spots. A imall spot is detached from the following spot on February 7. The group rapidly diminishes in lize after passing the central meridian, and the preceding ipot also breaks up, so that on February n the preceding spot has divided into two separate portions, and on February 13 the group is composed of several small faint spots scattered over a wide area. Group 961. Two small spots on February 7 and 9, but only on* is seen on February S. Feb. 7-160 8-164 9'545 5 7 O 63 33 *S 4 7 o 4> 3 69 181-5 186-3 190-1 + *'4 + *7 + 4'4 + 397 -f-56-8 + 78-8 Feb. 6-520 7- 160 8-164 9-545 10-172 1-547 I 2 1 64 3"436 14-159 127 103 9 150 7' 76 21 16 o 7'9 733 798 618 396 3'4 181 '7 '39 2 60 3 44 4> 12 10 .|00 618 489 438 3*' 204 167 1 10 3 89-8 89-6 8 97 90-8 9*'3 93'5 937 94-1 98-8 '+ 5'3 + 5-9 + 57 + 5'5 + 4'8 + 4'5 + 4'i + 3'9 + 2-7 -6,- 3 -S3'* -39-8 20-6 10-8 + 8-5 + 16-8 + 34' +48-2 Means ... 4 47 186-33 + 3'7 Group 963. Three very small spots on February 8. By February 9 the group has expanded into a very fine group composed of two large spoti and several smaller spots between them. The smaller spots gradually disappear, and on February n only the two principal component* remain, and of these the following spot gradually diminishes on the succeeding days, and disappears before February 1 5. M'-uns 53 307 9 2- 48 + 47' Feb. 8-164 9'54S 10-172 "'547 I 2" I 64. 7 "3 80 97 67 46 22 8 109 734 844 618 525 288 91 132 4 58 40 So 37 3' '9 11 64 377 422 323 290 199 63 83 98-7 99-2 99-8 101*4 102-5 103-8 105-1 106-7 - 5'2 - S'4 - 5-2 - 4'9 5*2 30-8 it -a - 3'3 + 16-4 + 25-6 +437 + 54'S + 69-3 Group 960. A very small regular spot. A second spot appears near it on February n, the two being measured together on that day. Feb. 6-520 7-160 8-164 9-545 10-172 ii'U- 1 1 1 64 9 o 9 o o 4' 33 *7 3 4 '9 *7 10 o 5 o 67 36 21 18 8 10 '4 78-1 78-9 78-8 78-8 79-4 81-1 80-7 - 8-4 - 8-5 - 87 -73-0 -63-9 CO'7 13-436 14-159 15-163 - 5-6 - 57 - 5'9 - 8-2 - 8-3 - TO - 8-1 - 3 2-6 -23-7 Means ... 3' 253 102-15 - 5'39 - 39 + 3'8 Group 964. A very laige spot of irregular shape. It divides into two on February i j, the pre- c.-74 ,46 '5^ 33 207 '5' 100 84 56 43 3" 589 1267 456 '7'5 1336 1285 1048 906 565 *" 365 g 6 4 129 9' 84 '57 107 83 62 62 56 73 463 1 6-0 635 '5'9 941 14-6 925 15-1 955 '5'3 689 16-7 669 16-9 573 '6-8 555 '7'o 418 16-8 413 17-1 614 1 6-2 + 7'S + 7-5 + 7-9 + 7-6 + 7'4 + 7'3 + 7'3 + 7'4 + 7'J -t- 7'4 + 7'S + 7-8 69-0 6 ro -45-5 -35'5 21'l 2'0 + 8-0 4-19-9 + 3*'8 + 45'2 4-58-6 + 7>'4 Feb. 7-160 8-164 9'545 10-172 "54; 12-164 ' 3'436 14-159 15-163 16-582 17-320 34 36 43 80 49 7' 44 4* 5' 23 16 228 375 285 325 321 360 271 267 221 l6l o 53 3' 3> 46 26 37 22 23 33 18 3' 326 3'3 204 186 '7* 83 '39 '44 '43 120 66-2 59-0 58-1 57-4 57'4 57-8 is 58-2 57-4 57-1 -'7'3 -17-8 -17-2 -TS -17-8 -'- -.8-5 -18-3 -18-1 -76-6 -70-5 -53'3 -457 -27-6 -19-1 - 3' + 7-0 + 20-8 +387 +48-2 '7 5 -'7'4 Means ... 83 654 16-20 + 7-51 176 AREAS AND HKLIOGRAPHIC POSITIONS OF GROUPS OK SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Group 965. A small faint spot. Group 971. A close cluster of very small spots. It rapidly increases in size between February 25 and 26, and on the latter date forms a group composed of a regular spot followed by a long line of small spots. These smaller spots all disappear before March 2. I88 3 . d Feb. 13-436 20 o 12 o 91-1 -I7-7 + 31-0 1883.4 Feb. 24-165 25-224 26-545 27-589 28-540 Mar. i 1 6 1 2-609 3-519 4-473 o 4 45 55 36 3 2 o o 55 63 303 333 2 74 198 88 38 21 5 35 23 30 22 27 34 34 I5 2 172 53 121 74 46 48 o 244-1 244-2 245-9 247-1 2 47'5 2 477 247-6 247-9 248-4 o -12-9 -13-0 -12-5 I2'I I 2- 1 -12'3 12'I -I2'4 -12-3 -34-8 Means ... ... o 12 91-10 -I7-70 Group 966. Two small spots. - 1-6 + 13-4 + 26-3 + 34'7 + 53'6 + 65-9 + 79-0 Feb. 13-436 o 38 22 43-4 +15-5 -167 Means ... O 22 43-40 + 15-50 Group 967. Two small spots. Two or three smaller spots are seen between them on February 16. The following spot of the pair disappears before February 19. Means ... 16 93 246-71 12-41 Group 972. A small faint spot. A second spot is seen on February 27 to 28. Feb. 14-159 15-163 16-582 17-320 18-243 19-204 20-157 21-155 o '4 28 16 20 7 9 o 8 64 109 53 55 22 55 34 o IO 15 8 IO 4 5 o 9 f 61 27 28 1 1 3 21 346-3 350-5 35'-8 353H 353-6 355-3 355-9 356-4 -'57 16-0 -15-7 -15-6 -157 -15-7 -15-4 ~'5"4 -64-3 -46-9 26-9 -5'S - 3'3 + ii-i + 2 4'3 + 37-9 Feb. 26-545 27-589 28-540 Mar. i 1 6 1 8 o 16 39 43 *4 o 6 16 29 26 13 187-6 189-3 189-9 188-9 + 47 + 4-7 + 5-0 + 5'* -59"9 -44'4 -3i-3 -24-1 Means ... 7 2 9 352-90 -15-65 Means ... 2 21 188-93 + 4-90 Group 968. A small faint spot. Group 973. A regular spot. A small spot follows it closely on March 7. Feb. 16-582 ii 6 26-0 + 15-1 + 7-3 Means ... 6 26-00 + 15-10 Mar. 7-456 8-592 9-413 10-413 1 1 12-588 27 17 48. 16 125 130 90 81 25 36 170 14 109 33 61 10 47 5 30 12 60-4 61-1 60-8 60-4 60-6 607 -3' 2 -13-8 -697 54-0 Group 969. Two or three small faint spots, showing a marked southerly drift in latitude. -I3-4 -13-2 -13-0 -12-7 -43'5 30-8 -16-3 - 1-8 Feb. 18-243 19-204 20-157 5 4 o 2 4 63 '3 4 2 1 7 39 7 309-2 307-9 39'4 -177 -19-7 -477 -36-3 Means 16 72 60-67 13-22 Group 974. Two or three very small spots. Means 2 21 308-83 -19-17 Group 970. A small faint spot. Mar. 8-592 9-413 10-413 9 24 7 61 60 68 5 12 4 3* 30 36 100-4 I02-I I02-I -17-5 -17-4 -17-2 -'47 2'2 + 10-9 Feb. 19-204 o '9 '9 39-6 + 17-2 + 55'4 Means ! 9 39-6o + 17-20 Means 7 33 101-53 -I7-37 TAKKN AT GREENWICH, IN ISMA, AJI> IN MArRMirs. IN TIIK VKAKS 1882 TO ! 177 I Areas and Heliogr;i]>hic Position.-; of (ipm-is ..f Sun Spota continued. Date. Greenwich Civil Time. Projected Area of Area h.r up. feu I/Olli. 'tip. Mm Latitude of Group. Longitude Irijiii Central i in I-.-.. Greenwich Civil Time. Projected Area of Ana for 9roup. M, , Longitude of Group, Mean Latitude of Group. Longitude from Central Meridian. Umbra. Whole Umbra. Whole Umbra, A bell Spot Umbra. Whole s;.,,- <;roup975. Tiro Miiall njots. The preceding spot disappears Iwf.re Match 9. Group 979. A straggling group, composed of about half-a-dozen small spota. 1883.,, Mar. 8-592 8 9-4 i ; 3 36 7 5 2 21 4 O 86-3 85-9 + 11-8 fu-4 o -28-8 -18-4 1883. Mar. 12-588 '3'447 14-1-- 39 35 12 218 170 119 '9 '1 1 12 88 64 o 60-3 S9'9 60-0 a -19-5 -19-5 18-0 e '2 4- 8-8 4-18-5 Mi-ins 4 "3 86-10 4-12-10 ... Meana ... ... '5 88 60-07 -19-30 Group 976. A small spot. A number of other small apoti appear close to it after March to, and form with it a compact cluster. Group 980. A regular spot, rapidly diminishing in size after it has passed the central meridian. Two or three very small sjipto are seen near it on March 16, 17, and it. Mar. 8-592 9'4 '3 10-413 12-588 3 4 T399 16-490 17-405 2 I 1 O 33 21 *7 o o 28 38 lograph. 1 3 2O2 209 '* + 133 37 4 1 1 (o o ll 12 16 O o 4* 28 *9 5 7* 109 "4 74 95 34 47-5 47"3 48-0 48-9 49-8 50-1 49'9 50-7 51-2 51-0 4-15-4 + 16-3 + 16-9 4-16-1 + 15-3 + 15-4 + '5'4 + 15-3 + 15-* 4-16-4 -67-6 -57-Q -43-2 -28-0) -127 I'O + 8-4 + *5'3 4-40-1 4-52-0 Mar. 12-588 I3-447 14-177 '5'399 16-490 17-405 18-200 19-153 20-161 21-152 '3 *5 13 59 3 *5 '7 10 6 o 7* 7* I 21 169 "54 164 67 67 30 *3 >7 *3 10 3 S 10 '3 4 o 93 103 85 88 36 38 20 18 357-5 35 6 7 356-6 356'3 356-2 356-6 356-4 356-8 356-8 357'G 4-137 4-13-6 4-I3-3 4-13-0 4-13-3 4-12-6 4-i*-8 4-13-0 -M3' 4-13-0 65-0 -54'4 -44-9 -29 i -14-9 - z '4 4- 8-0 4-20-9 4-34-* 4-47-5 Mr, Ills 6 65 49-44 + 1577 ... Means '3 64 356-69 + i3''3 ... Group 977. Two or three very small faint spots near together. Group 981. A very fine spot, with a number of very small spots following it The spot is nearly divided into two by a brilliant bridge, and the two juris are measured separately on March 17, 22, 23, and 14. The spot diminishes in ail* Tery rapidly after March 14. Mar. 10-413 1 I 12-588 ' 3H47 4 N pi 8 53 -- ; 60 2 (' O 5 28 33 38 35 79-5 80-0 80-4 799 -21-4 -11-7 4- 3-') 4-17-9 4-28-8 21-3 21-2 *o-6 Mar. 16-490 17-405 18-200 19-153 20-161 21-1 52 22- 5 89 23-461 H'493 25-591 26-481 *7'4'7 33 85 7' 98 99 too 163 *5 "4 57 49 284 5" 883 1002 939 1004 1074 920 798 37' 269 90 56 85 55 62 55 5 82 65 66 4' 44 o 480 53 I 706 644 >" 5,6 54 480 4 < 5 265 242 "3 297-5 - 8-0 297-2 - 8-3 296 8 8-2 296-9 - 7-9 Z97'5 296-9 - 7-7 296-0 - 7-7 *95'9 ~ 77 296-6 - 7-7 296-8 - 8-2 296-0 8-3 296-2 - 8-3 -n* -61-8 Mi-ai ... 2 34 79-95 -21-25 -51 6 -39-0 25-1 Group 978. A regular spot, with a number of smaller spots following it closely. These latter liiimiiMi in size, and fade out one by one, until on March 20 the preceding spot of the group alone remains. -12-6 4- 5'3 4-16-8 4-3'-' 4-45-8 4-56-8 4-69-2 1 Mar. 10-413 l r 12-588 "3-44: 14-1 - '5'399 16-490 17-405 18-200 19-153 lO'IDI j 21 152 o Nu [ -61-6) -467 Means ... 55 460 296-69 - 7-98 13 i -11-6 -13-0 -13-2 -13-2 -13-1 -13-0 -13-1 -12-8 35-0 -*4'5 - 8-1 4- 6-8 4-19-4 4-30-1 4-43'' 4-56-2 4-69-8 Croup 982. A scattered group of very small upots when first seen on March 19. It rapidly increi " the folloinR days, and forms lonn straight lr ofwhicl. the lirstaud last are the largest The intermediate spota dianp|>ear before March 15. Mar. 19-153 lO'l6l 21-152 9 16 1 1 7' '59 o 5 9 8 Si 2897 289-2 290-5 -.9-1 -.9-1 18-9 -46-2 1 Means ... ... ... 28 226 '7'35 -12-93 19*0 PHOTO-HELIOGRAPH ic RESULTS, 1682-1865. 178 AREAS AND HELIOGRAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Date. Greenwich Civil Time. Projected Area for Area of Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Group 982 continued. Group 986. A small faint spot. 1883.,, Mar. 22-589 23-461 24-493 25-591 26-481 75 67 69 33 o 473 44 497 221 163 38 35 39 24 242 228 286 .49 146 288-9 291-3 293-2 292-6 297-4 -19-2 -l8'0 -I 7 -6 -177 16-7 - 1-8 + I2'2 + 27-7 + 41-6 + 58-2 l883.,i Mar. 28-424 29-443 30-150 O 36 47 9 o 34 68 21 272-0 275-2 270-2 o -18-7 -19-3 -197 + 58-3 + 75" + 79'3 Means ... o 41 272-47 Means ... 19 H9 291-60 -18-29 -19-23 Group 987. A very large regular spot, with two or three small spots near it. These disappear before April 2. Group 983. Two small faint spots. Mar. 22-589 o 56 43 333-9 + 17-8 + 43-2 Mar. 28-424 2 9'443 30-150 3''57i Apr. 1-475 2-411 3-406 4-I37 5-556 6-406 7-453 8-556 9-421 25 58 124 171 202 192 196 139 158 134 84 4 2 '5 185 5i3 747 857 1028 1012 973 928 880 817 447 200 9 90 75 119 114 118 104 103 75 97 94 78 64 55 669 674 719 572 6O2 547 5H 55 54i 575 4'7 35 327 133-6 135-2 135-1 '34-9 '35' 135-6 136-0 I35-5 I35-7 '357 I35-6 I35-5 '357 + I3-4 + 13-2 + 13-0 + I3" + I3-3 + 13-3 + 13-6 + 13-6 + 13-6 + I3-3 + 13-8 + 13-1 + I3-3 -80- 1 65-0 -55-8 Means ... 43 333-9 + 17-80 Group 984. A group of several very small spots on March 22, which increases in size very rapidly on the following days, and forms a long line of spots, of which the preceding spot is the largest. The group rapidly diminishes in size after passing the central meridian, the following spots disappearing the first, so that on March 31 the preceding spot is left alone. 37'2 -25-2 I2'2 + i-3 + 10-4 + 29-4 + 4'5 + 54-3 + 68-7 + 80-4 Mar. 22-589 23-461 H'493 25-591 26-481 27-417 28-424 29-443 30-150 SI'S?' 21 46 I 4 2 107 109 51 6 3 45 23 '7 '35 352 682 639 593 432 426 338 150 67 15 29 78 55 59 3 4i 38 26 5 93 214 374 335 317 249 280 280 1 68 201 249-2 248-1 248-3 2497 2507 252-0 252-0 252-4 254-8 254-7 -24-2 -24-5 -4I-5 -31-0 -I7-2 - i"3 + H-5 + 25-0 + 38-3 + 52-2 + 63-9 + 82-6 2 4 J -24-2 -24-0 -2 3 -8 -23-9 -24-1 -24-0 -24-0 Means 9i 536 135-32 + I3-35 Group 988. A small regular spot. Mar. 29-443 30-150 31-571 Apr. 1-475 2-411 3-406 4-137 5-556 6-406 7-453 8-556 4 20 35 36 4 2 27 2 9 36 21 O 62 98 2OO 241 237 I8 5 1OO 144 142 IOO 33 2l 26 22 23 '4 15 19 12 O O 133 125 '5' 150 130 94 5i 77 83 69 3 1 I22'7 I 22 -9 I23-0 I23- 7 I23-9 124-2 124-5 124-5 I2 5 -I 125-0 I25-2 -12-9 -13-1 -77-5 -68-0 Means 4 2 25' 251-19 24-10 Group 985. A regular spot, followed by a few small spots on March 27, 28, 29, and 30. 13-2 -13-6 -13-6 -13-8 -1-3-8 14-0 -I4-3 -13-8 -H'7 -49-1 -36-5 -23-9 -10-5 - 0-6 + 18-2 + 29-9 + 437 + 58-4 Mar. 26-481 27-417 28-424 29'443 30-150 31-571 April 1-475 2-411 3-406 4-I37 5-556 6-406 o o 56 62 53 54 37 27 30 25 o 1 1 1 221 320 414 369 387 387 I8 7 180 I 12 99 52 o o 37 35 28 27 19 15 9 17 o '43 '95 215 236 '95 193 196 101 I 12 82 H5 I 10 171-5 171-1 171-2 1 7' i -o 171-7 171-8 171-5 171-4 171-8 171-9 171-2 '72-3 - 7'9 - 8-8 - 8-1 - 7'9 - 8-1 - 8-2 8-2 -67-7 -55-9 -42-5 -29-2 -19-2 - o-3 + 11-3 + 23-6 + 37'i + 46-8 + 64-9 + 77-1 Means ... '5 99 124-06 -13-71 - 8-3 - 8-2 - 8-2 - 8-5 - 8-4 Group 989. Two or three small spots close together. Mar. 30-150 3i-57> 22 12 168 1 06 3 1 10 242 85 123-5 124-0 + 13-5 + 12-4 -67-4 -48-1 Means ... 16 158 I7I-53 - 8-23 ... TAKKN AT (>KEKNWir||, IV I.NDIA, AND IX MAURITIUS, IS THK YKAR8 182 TO 1885. 179 is itinl Heliohic Positions of Groups of Sun Spots continued. Date. Greenwich Ciril Time. Projected Area of Area for Group. M Longitude of Group. M,,,, Latin. !. of Group. Longitude I'roin Central Meridian. Date. Greenwich I'ivilTiine. Projected Area of Area for Group. Mean Longitude -I < r .'; ; Mean Latitude of Group. Longitude from Central Meridian. Umbra. Bpk Umbra. \Vhi.lc Spot. 1 '.iii'M Whole Spot. 1 .'.,' : L Whole Spot. Group 989 continued. Group 993. A very snisll faint spot. 1883. d Apr. 1-475 -4II 3-406 O O 121 100 73 O O 79 58 4> 123-6 113-8 122'8 o + 12-2 + i*-5 + '3'3 o -36-6 -14-0 1883. Apr. 2-411 O '9 O 1 1 126/8 + 8-9 ro M ... O " 126-80 + 8-90 Means ... ... 8 IO1 *3'54 4-1278 ... Group 994. Two small spota. ip 990. A imall faint spot Mar. 30-150 3' - 57" Apr. 1-475 22 *3 *5 o 5' 21 18 114-5 115-2 115-4 + 7'3 + 7'4 + 7'* -76-4 -56-9 ...a Apr. 5-556 6-406 O O *3 104 o o 18 I 12 154-6 I56-0 + 7'5 + 7-8 +48-3 + 60-8 44 o .Means ... 65 '55'3 + 7-65 HMD ... o 30 115-03 + 7-30 Group 995. A small faint spot. Group 991. A small spot on April i. Other small spota appear following it on the following day. :iii'l the uronp increases in size until it passes the central meridian. The following spots thru ili-appi-ai very quickly, and the preceding spot alone remains on April 7. Apr. 6-406 O 2O 12 64-9 - 8-6 -30-3 Apr. i 2-411 3-406 4''37 5-55 6 6-406 8-556 9-421 12 a 11 }' 17 10 69 *34 "7 221 378 34 2 78 75 45 12 28 9 33 35 If o 1 1 8 7 79 '34 '*5 94 178 44 5 |8 100-3 99' IOO'2 99-0 99-1 100-8 106-3 107-0 107-7 + 21 + -3 + '7 + '5 + -8 + '8 + 3-6 + 3'5 + 3'9 -59'9 -487 -34'5 -26-1 - 7 1 ' + 5-6 + 15-0 + 40-2 + 5'-4 Means O 12 64-90 - 8-60 ... Group 996. A small faint spot on April 7. It rapidly increases in site on the two following days, and other spots appear. Toe group begins to decrease as it passes the central meridian. The following spot* disappear and the preceding spot alone remains on April 13. ins ... ... 17 112 102-18 + *'9 ... Apr. 7-453 8-556 9-421 10-552 11-139 12-431 13-285 14-168 O 76 107 84 45 3 '5 3 9 2 365 5'7 498 183 105 5z '7 O 46 57 43 *3 16 9 2 67 2I 9 279 2 54 '43 56 3' 12 34'3 33-9 34-8 32-2 35'* 35'3 36-3 36-4 -14-1 -47-0 Group 992. A small spot on April i, which rapidly increases in sin on the following days. A lecond spot ap|M-ar< following it on April i, and smaller spots are formed between the two on April 4 and 5. Tin- group diminishes in size toon after patting the central meridian, snd the preceding spot alone remains on April 1 1. ~**1 -13-6 -13-6 -3'4 -'3'5 -13-2 -I3-4 -3*'9 -20-5 - 8-2 + 1-6 + 19-7 + 32-0 + 437 Apr. 1-47; 2-411 3-406 4-'37 5-556 6-406 r 7-453 8-556 9-421 10-552 11-139 12-431 3 82 7 '43 '57 54 99 68 40 '5 o 58 *75 462 879 1062 643 54' 445 231 161 54 O *7 58 44 77 81 28 55 44 35 16 85 4" 292 470 550 33* 299 zS 2 '95 171 "34 89-, 87-5 89-2 89-0 89-4 88-1 8S- + 887 91-8 94'3 95-0 95-0 -18-1 -'7'3 -:'' 60-3 Mi-MlB ... *5 "33 34-80 -13-56 ... -I/-3 -'7-3 -<:' -17-1 -'7'4 -16-8 -16-1 -! -16-1 -36-1 16-9 - 7"' + "'I + 21-9 -r-36-5 + 539 +62-4 + 79'4 < iroup 997. Two very small faint spota. Apr. 9-421 10-551 11-139 o o 8 28 69 43 o 5 '9 44 *7 17-8 16-0 + 29-9 +JO-1 + 30-6 -27-5 - 6-6 Means 39 291 9 C -16-98 Means 2 3 26-87 + 30-20 180 AKKAS AMD HELIOGRAPHIC POSITIONS OK GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Group 998. A small spot on April 10 and n. It has greatly increased in size by April 12, and forms a large group of very irregular shape. It continues to change with great rapidity on the following days, breaking up into a great number of small and somewhat scattered spots. Group 1000 continued. 1883. Apr. 21-439 22-433 23-603 78 29 o 349 ,67 33 58 30 257 ,67 65 o 303-6 3 = 3-8 304-' 16-4 o + 47'0 + 60-3 + 76-0 1883.,, Apr. io'552 11-139 12-431 13-285 14-168 '5* 16-486 I7-H7 18-391 19-141 '3 6 163 '34 150 No pho 95 90 8 44 48 4 2 788 1013 1108 togrnph. 430 606 565 359 IO 5 96 73 79 (68 57 62 7 59 39 I 9 460 55i 584 423 262 414 5-28 444 o 35''* 35''3 350-5 350-2 350-4 35i-9 353-4 353-3 352-2 35>'6 o + 11-5 + I2'0 + 12-3 4-12-7 + 12-6 + i 1-6 + io-6 + I PO + 12-5 + 10-5 o -49-2 -4I-3 16-9 Means 62 455 303-68 16-01 25 I -14-1 - 2-3 + '4'5) + 3i-3 + 40-0 + 55-2 + 64-6 Group i oo i . Several spots in a compact cluster, followed by a number of spots, most of them small and arranged in a straight line. The group diminishes rapidly after passing the central meridian, the following spots disappearing before April 24. Apr. 13-285 14-168 IS' 16-486 17-147 18-391 19-141 20-538 21-439 22-433 23-603 24-610 7 23 No pho 8z 58 44 61 32 25 45 127 370 togrnph. 483 597 696 712 267 250 1 60 1 06 '5 26 37 (47 56 35 23 3 2 o 18 17 42 O 458 6,4 470 325 355 365 362 Hi 142 103 98 2 3 280-9 279-3 280-0 280-7 281-5 282-2 282-5 285-1 282-7 281-6 285-2 285-6 16-4 -'7'5 16-9 -16-3 -83-4 7 7M Means 5* 373 351-60 +11-73 -57-4) -41-4 Group 999. A large regular spot, followed by a large spot of irregular outline. Several small spots cluster round each of the large spots, and are measured with them. The following spot divides into two portions on April 14, and breaks up yet further on the following days. Only two small spots of this portion of the group remain on April 20, and only one on April 21 ; and this last disappears before April 22. Two new spots (which are measured together as one on April 21 and 22) appear on April 21. -15-9 -16-1 -15-8 -i5-3 -15-8 16-0 -15-4 -15*3 -31-8 -14-8 - 4'5 + 16-6 + 26-1 + 38-1 + 57-i + 70-8 Means 28 288 282-28 16-06 Apr. 12-431 13-285 14-168 IS' 16-486 17-147 18-391 19-141 20-538 21-439 "'433 23-603 46 73 107 No pho 190 156 126 124 IO2 80 4' 16 53 582 757 tograph. 1313 1162 1177 1033 815 5/8 408 144 65 7 1 81 (92 103 82 67 69 67 63 46 37 222 564 57 643 715 612 622 568 53' 446 43 294 305-2 305-8 305-9 305-9 305-9 306-1 306-1 305-1 306-1 3047 302-6 304-6 -22-7 -23-0 -22-9 -22-7 -22-5 -22-4 22-1 -22'3 22-1 -21-9 22'4 -21-3 -70-4 -58-5 -46-8 -3i-5) -16-2 ^7-2 + 9'' + 18-1 + 37-6 + 48-1 + 59' 1 + 76-5 Group 1 002. A small spot. Apr. 16-486 16 17-147 2 33 12 21 2 43 12 254-3 -247 254-0 -24-5 -67-8 -59-3 Means ... 12 28 254-15 -24-60 Group 1003. Two small spots. The following spot is only seen on April 17. Means 7 516 305-33 22-36 Apr. 17-147 18-391 19-141 o o o 36 22 5 O O '9 1 1 3 298-9 301-4 300-4 + 8-3 + 7'5 + 7'3 Group 1000. A very fine spot of irregular outline, with a number of small spots close to it. The group greatly diminishes in size between April 14 and 16. 4 + 4'4 + '3'4 Means o 1 1 300-23 + 7-70 Apr. 12-431 13-285 14-168 '5' 16-486 17-147 18-391 19 141 20-538 49 92 109 No pho 169 '15 96 '37 62 406 776 1087 tograph. 7" 918 946 824 5 2 5 /6 93 85 (88 90 59 49 73 39 63, 783 846 613 379 47' 485 437 326 303-5 303-6 302-7 302-8 33'9 303-9 304-3 304-0 304-0 -I5-2 -.5-9 16-0 -15-8 -I5-5 -'5-5 16-0 -15-7 -16-2 -72-1 60-7 50-0 -34'0 -I 8-2 - 9'4 + 7'3 . + 17-0 + 35-5 Group 1004. Three or four very small spots arranged in a straight line. The group greatly increases in size before April 21, and forms a straight line of spots, of which the preceding spot is the largest. The following spots diminish after April 22, and disappear before April 24. Apr. 18-391 19-141 20-538 o o 26 38 25 o o 15 21 '3 265-9 266-1 266-3 - 6-1 - 6-0 - 6-0 -31-1 20-9 2'2 TAKES AT (iRKKNWl'-l!, IS INWA, AND IN M AI1;1 1 II s, IS THI YKARS 1882 TO 1 181 .is iiml Heliotfraphic Positions of Group* .if Sun Spots continued. I i.j. iwich Projected Are* of Area for up. M.,:, Longitude of Group. Mean Latitude of Group. Longitu'li from Central Meridian M* Greenwich Civil Time. I'rojected Area of Ana for Group. isjsj Ufjjlsjfc of Group. Mean Latitude of Group. Longitu.1. M Central Meridian. Umbra. Umbra. Umbra. Whole S|H>t rn.i.n Whole pot Group 1004 rtmtinwil. I Jrinip 1009. A small spot A very small spot is wen near it on April 15, but disappears before April 26. Another very small spot appears on April 16, and others (which are measured with it) form in the neighbourhood on April 17. Apr. n'439 12-433 23-603 24-610 *> 533 26-418 3* 4* 4> 30 4 o "5 44* 224 97 105 30 16 *4 *7 26 5* o "5 *43 148 84 '35 76 A 268-3 268-7 268-8 269-5 ?6 9 -8 269-9 o - 5-6 - 5-' - 5' - 4-6 - 4'' 4' 1 o + 11 + 25-1 + 47 + 547 + 67-2 + 79'' 1883. Apr. 23-603 24-610 *5'533 26-418 27-202 28-182 29-136 O O 16 |6 26 28 16 16 1 1 4' 45 7' 9' 5' o o 12 10 '5 5 8 *9 3' *7 4 S 154-6 155-2 156-0 155-6 1567 155-6 155-6 + 4' + 4'6 + 3'8 + 5-5 + 6-4 + 5-8 + 5-7 -73j ~ 5 2t 46 6 35' 2 1 M.'aiiK ... ... 16 94 168-14 - 5''9 -23-8 -11-9 + 0-6 Group 1005. Two sinmll n|ta. Means ... 9 jo 155-61 + 5"'4 ... Group 1010. A small spot. Two other small spots are seen near it on April x* and 15. AI"-- "'433 34 o 3 299-1 + 7'8 + 55-6 Means ... ... 3' 299-10 + 7'8o ... Apr. 24*610 *5'533 26-418 27-202 28-182 9 -i36 *4 2$ O 8 5 o 83 "4 39 24 9 1 1 12 3 o 5 4 o 43 59 21 5 4 1 1 209-9 211-3 213-0 214-0 213-8 214-4 + 6-2 + 5'5 + 4'5 + 4-8 + 4-6 + 4'4 - 4'9 + 87 + 22-* + 33-S +46-3 + 59'4 o 20 Group T" -in 1006. !I -I...N. 7 189-4 + 5'5 -54-1 Apr. 22-433 Means ... ... Iff 189-40 + 5-5 ... Means 6 *7 212-73 + 5 "0 Group 1007. A small faint spot A second in Men near it on April 13. Group 101 1. A small spot disappearing before May i. Several other small spot* are seen in ita neighbourhood on April 19 to May i. Apr. 22-433 23-603 38 4 o 39 3 182-0 180-3 {.< - - '59 1 6- 1 01 5 -47-8 Apr. 24-610 2 5'533 26-418 27-202 28-182 29-136 30-541 May 1-416 o 1 1 12 6 12 4' 8 o 4 37 47 28 49 107 166 54 12 9 4 7 *4 4 o 26 4 38 9 28 60 86 *9 142-2 142-6 142-1 1427 141-4 136-3 137-1 136-4 + 12-7 + *'5 + 12-9 + 127 + 12-9 + 14-' + 12-8 + 13-0 -72-6 Means ... o 35 181-15 i 6-00 ... 60-0 -487 -37-8 -25-1 -187 -1- 0-8 + 11-6 Group 1008. A regular spot Apr. 22-433 23-603 24-610 *5 - 533 26-418 27-202 28-182 29-136 3'54' May 1-416 2-190 3-416 16 49 1 61 45 45 37 36 *4 '7 o -o "4 211 37 37' 3*4 37 246 "3 89 68 48 '5 34 30 33 *3 *3 20 *4 '9 18 118 106 47 240 201 1 68 63 33 79 70 7> 107 171-5 1^2-0 I72-3 172-8 1-2-9 I73-6 1731 73'9 174-2 174-1 '747 '"4'6 + 7'3 + 7'4 + 77 + 8-1 + 8-2 -r 8-0 + 7-8 + 7'4 -I- 7-6 + 7-8 + 7-6 + 77 72 o -56-1 -42-5 M.MI1H ... 8 4' 140-23 + *'95 29-8 -1-9 - 6-9 + 5'8 + 18-9 + 37'9 + 49-3 + 60-2 + 76-2 Croup 1012. Two Miml! spots. Other .small spot* app<-ar in their neighbourhood on April 16. The group has greatly diminished on April 17. Apr. 25-533 26-418 27-202 65 3< 8 48 73 34 33 16 5 76 9 1 20 203-9 203-7 2O6'2 -' -17-2 -16-1 + '"3 + 12-9 + *57 MrJIlS 20 '34 '73'33 + ' M .Mii- ... ... ll 63 204-60 -17-03 182 AREAS AND HELIOGRAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Group 1013. Two small spots. Group 1018. Two small spots. The preceding spot disappears before May 4. 1883. d Apr. 28-182 19-136 8 8 28 2 5 5 7 '9 22 208-8 209-7 -15-1 -I 5 -o o +41-3 + 547 1883. May 3-416 4-491 O o 59 36 51 46 151-9 I50-3 o o + 107 +53-5 + 10-4 -f66'i Means 6 21 209-25 -15-05 ... Means 49 1 5 no + IQ-55 Group 1014. A small spot. A second is seen near it on April 29. Group 1019. Two small faint spots. May 3-416 I 2 4 o '3 116-3 -19-4 +17-9 Apr. 28-182 29-136 3 1 1 15 4' 4 IO 21 39 99-0 97'4 -I 5 -6 -17-3 -68-5 -57-6 Means ... o >3 1 16-30 -19-40 Means ... 7 3 98-20 -16-45 Group 1 020. A small faint spot. Group 1015. A small spot. A second is seen near it on May i . May 3-416 o 7 9 3i-3 -16-3 -6 7 -I Means ... 9 3'"3 16-30 Apr. 29-136 30-541 Mav 1-416 2-190 8 4 4 4 '4 2 5 58 2 4 7 3 2 2 12 16 33 '3 1 103-8 + 13-6 105-2 +13-6 104-1 +14-0 105-9 +14-4 -51-2 -31-1 20-7 - 8-6 Group 1 02 1. A regular spot, with sometimes two or three very small spots close to it. May 4-491 5-516 6-430 7-133 8-143 9-141 10-128 1 1 -409 12-162 13-517 14-161 15 17 20 26 3* 34 3 2 43 21 '4 II 82 142 124 217 192 156 221 '94 132 74 62 28 18 16 18 18 18 17 23 12 IO IO 148 150 9 l 146 1 1 1 83 "5 104 77 54 54 IO'O 9'4 9'3 9-2 9'4 9'5 97 97 9'9 9-9 9-6 -18-3 -74-2 Means ... ... 4 '9 104-75 +13-90 ... 18-4 -18-3 18-3 01-2 -4 9 -2 40-0 Group 1016. A number of very small faint spots arranged in a straight line. Only the last spot is left on May 4. -18-1 -18-1 i 8-0 -17-8 18-0 -18-4 i 8-1 -26-5 -I3-I + O'O + 17-0 + 27-2 + 45-1 + 53'4 May 1-416 2-190 3"4' 6 4-491 7 21 IO O 62 67 54 21 4 10 5 o 33 34 28 12 107-6 108-5 108-4 106-5 + 6-0 + 6-2 + 6-1 + 7'5 -17-2 - 6-0 + 10-0 + 22-3 18 4 Means 17 104 9-60 18-19 ... Group 1022. Two small spots. The following spot disappears before May 9, and the preceding spot increases in size, breaking up into several portions on the following day. Means ... 5 2 7 107-75 + 6-45 Group 1017. A very small spot. May 6-430 7''33 8-143 9-141 10-128 1 1 -409 12-162 12 22 '4 8 8 36 97 122 287 1 I I 78 12 o i 4 6 2 3 55 64 149 60 49 9 24-8 26-4 28-4 28-0 26-6 28-5 30-5 + II-0 + II-0 + 10-9 + ii-i + H-4 + 11-5 + 10-7 -337 -22-8 - 7-5 + 5-4 + 16-9 + 35-8 +47-8 May 1-416 2-190 34 49 o 18 26 109-5 110-5 + 13-5 -15-3 + 13-6 - 4-0 Means o 22 I lO'OO + I3-55 Means 5 58 27-60 + 1 1 -09 TAKEN AT GREENWICH, IN ISHIA. AM' IN >fAURITlUS, IN TUB YEARS 1882 TO 1885. 1S3 \r''ius ami Ili>lio<;raphir Positions of Groups of Sun Spots continued. Da* Greenwich Time. Projected Area of Area for Group. M Longitude r.mp. Mean Latitude of 1 I/mi^it 11. 1. from Central Meridian. Date. Greenwich Civil Time. Projected Area, of Area for Group. Mean Longitude of Group. Met* Latitude of Group. Longitu-ii from Central Meridian. Umbra. Whole Spot Umbra. wt,..i.. S|..t. Umbra. Whole Spot Umbra. Whole Spot Group 1013. A small faint Hpot Group 1027 Continued. 1883. May 19-514 20-132 11-407 48 33 9 *5 '73 67 44 37 16 129 I 9 6 183 o 299-9 2999 299-7 o -22-7 22'1 -12-7 O + 54'4 + 616 +79' 3 1883. a iv 6-430 O 8 O 8 o 359' -16-1 o -59'5 Mi-uns ... 8 TOO ... M KI 57 1 9 1 301-02 11-19 ... Group 1014. Two small faint spota. Group 1028. A large regular spot Two or three small faint spota at occasionally aeen in ita neighbourhood. ''33 *3 O *5 I 11-9 + '3'4 + 627 ... o ^5 1 1 1 -90 +1 3-40 May 10-118 11-409 12 l62 I3-5I7 l4-l6t '5'4*7 16-489 17-406 18-460 19-514 20-132 M 54 53 3 7 40 7 83 37 37 *5 20 *5 34 35 518 484 1 S 8 35' 304 Z 57 H3 56 69 56 57 43 5> 39 21 37 45 *3 18 *3 35 508 V l 246 34 271 '34 182 166 158 183 141 II? 291-8 192-4 191-7 291-5 292-2 292-3 291-5 292-2 292-3 292-3 292-4 291-5 + 1 I'D + I I'O + n-o + II-I + 10-5 + 10-9 -(- 10-8 + in + 10-8 + 107 + M'5 + iri -76-9 60-3 50-0 -32-3 -24-0 - 7'3 -1- 7'o + 18-9 + 32-8 + 46-8 + 55-1 +7*-i Group 1015. A regular apot, followed by a curved cluster of small spota. These Utter spota form a straight Hue on May 9, anil disappear before May 10. May 8-143 9-141 10-128 i i 409 34 3' 4 '79 *33 *5 4 '9 18 3 95 129 '5 20 38-1 38> 40-8 40-6 + '4'9 + '5'4 + 141 + 14-6 + I'* + I5-8 + 3 |-I +47 '9 Mi-.-ins ... 10 65 ;vr + 14-80 z i 407 Means 38 118 19143 + 10-96 ... ( Iroiip 1026. A small spot. Group 1029. A small spot May 9-141 IQ'128 11-409 I 2-162 >3'5'7 14-161 o 7 3 o 5 12 '7 '3 '4 '3 o o 5 i "3 '5 '3 9 7 303-0 303-6 303-2 303-4 302-9 302-8 -'57 -'5'S -'57 -5'4 -79-6 -66-1 -49'5 -39'3 May 12-162 2 1 1 2 10 285-9 + 12-O -56-8 -15-2 -5'3 -21-9 -'34 Means 2 10 285-90 + I2'OO Means 1 1 1 303-15 -15-47 ... Group 1030. Two small spots. Only one of these is aeen on May 1 5 and 16. The group incream in size Tcry suddenly, and on May 17 consists of a regular spot with a smaller one following it. Group 1027. A large regular spot A small spot is seen near it on May 1 1. My 9-141 43 10-128 35 11-409 75 12-162 76 '3'5'7 93 14-161 98 ' 5-4^7 '47 16-489 103 1-406 103 18-460 77 '47 205 408 *1 9 660 623 553 535 47? 362 'II 53 53 54 79 57 62 54 43 270 337 320 380 34* 95 296 284 253 302-6 302-5 301-8 301-9 301-3 301-6 301-0 300-7 300-4 299-9 -22-3 -22-4 -22-6 -22'3 22-2 22-2 22'O 22-0 80-0 67-2 -50-9 40-8 -S'S -14-6 + ''4 + 15-1 + 27-1 + 40-4 May 14-161 '5 - 4*7 16-489 17-406 18-460 19514 20- 1 32 IO O 60 1 *3 '5 2 *5 it 62 296 136 88 22 5 5 47 *4 35 5 '3 9 39 230 '47 ,76 69 315-6 318-9 321-8 322-1 321-3 321-1 3 '8-4 -I5-0 -14-4 -I4-2 -14-6 -15-2 -15-2 -14-8 - 0-6 + 9'3 + 363 + 48-9 + 61-8 H-75'6 + X 1 ' 1 21 9 -22'4 Meant* 17 98 3'9'9 HTf 184 AREAS AND HELIOGRAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Date. Greenwich Civil Time. Projected Area for Area of Group. Mean Longitude of Group. Mean Lon g itude from Latitude ,. Central of Group. ; Meridian. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Group 1031. Three small faint spots. Group 1037. A small spot on May 24. A second appears near it on May 25. '883-d May 15-427 o 9 1 O 48 o 318-1 o - 5-4 o + 18-5 1883. May 24-504 25-402 o O 32 36 O 36 3 o 117-1 1 1 5-6 o + 12-8 + >3'3 O -62-3 Means ... . o 48 318-1 - 5-4 52 o Means O 33 116-35 + 13-05 Group 1032. A small spot. A second spot is seen near it on May zo. The two are together on May 21 and 22. measured Group 1038. A small faint spot. May 1 7 '406 1 8*460 19-514 20-132 21-407 22-404 o o 24 21 ZO 52 24 12 o o o o o o 20 14 I I 2 9 '3 7 224-5 225-9 227-5 222-5 225-2 225-8 + 20-3 + 21-0 + 20-6 + 2I-I + 2I-I + 20-9 -48-8 -S3* May 29-41 2 o 8 9 49-2 + 9-2 -65-3 18-0 -14-8 + 4-8 + 18-6 Means o 9 49-20 + 9" 20 Group 1039. Two spots. Several small spots are seen near the preceding spot on June ^ June 7 small spots accompany the following spot. The following sp< companions disappear before June 8, leaving the preceding spot alone. -4. On Means ... ... 16 225-23 + 20-83 Group 1033. Two small spots. The preceding spot disappears before May 20. it and its May 30-598 3I-395 June 1-399 2-492 3-445 4-429 5'39 6 6-400 7-138 8-582 9-426 10-149 11-144 9 26 37 92 77 96 57 63 27 33 26 '5 o 3' 185 183 4'7 405 418 268 239 184 56 76 42 16 27 44 37 67 47 52 29 32 '5 22 2O H o 9 336 185 37 2 47 229 138 123 101 36 58 4 1 26 19-0 14-9 '57 15-0 I5-3 5'3 '57 i5-3 16-0 IT'S 16-9 17-5 17-3 + '4'5 + '4' + 14-2 + H"4 4HH + H-3 + 14-' + >4'3 + 14-6 + 14-6 + 15-0 + 14-9 + >4'9 - 79 -8 May 19-514 20-132 13 6 49 53 8 4 32 40 281-8 281-8 -22-3 22'O + 36-3 +44' 5 -73'4 -59'4 -45-5 -3*7 19-6 Means 6 36 281-80 -22-15 Group 1034. A small spot. - 6-4 + 6-5 + i/-o + 37-5 + 48-1 + 58-3 + 7I-3 May 19-514 33 18 227-7 + 16-0 - I7 -8 Means ... 18 227-70 +16-00 Means 3' H7 16-26 + 14-48 Group 1035. A small spot. Group 1040. A fine group breaking out suddenly on June i near the centre of the Sun. It consists at first of a large spot followed by an irregular group of small spots. The last of these develop on the following days into a large spot, showing much detail. The other small spots tend to coalesce, and on June 5 the group consists of five spots. Two of these disappear before June 6. May 23-401 3 25 2 '4 224-1 - 5'9 + 30-0 Means 1 H 224-10 - 5'9 June I "399 2-492 3+45 4+29 5'39 6 6-400 7-138 67 267 251 256 185 94 28 300 H33 H97 1783 1222 666 303 34 136 137 161 '39 102 56 IS' 73' 813 1098 919 -22 494 70-4 70-2 70-0 70-0 7'3 70-9 70-8 - 6-4 - 7-0 - 7"4 - 7-6 - 8-4 - 8-5 - 8-8 - 47 + 9'7 + 22-O + 35'' + 48-2 + 62-1 + 71-8 Group 1036. Two small spots. The following spot disappears before May 24. May 23-401 24-504 '5 o 85 15 8 o 46 10 2I2'9 214-6 + io-8 + 9'9 + 18-8 + 35-2 Means ... 4 28 21375 + 10-35 Means 109 704 70-37 - 773 TAKEN AT GREENWICH, IN INDIA, ANI' IN .MAURITIUS, IN THE YEARS 1882 TO 1885. 185 Date. Greenwich Civil Time. 1 Hrliiii.'raphii 1 Positions of Groups of Sun Spots continued. PNJ Ana of Are* for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Pat.-. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude 1 r : . j Central Meridian. Umbra. -; ; Umbra. Whole Spot Umbra. Whole Spot. Umbra. Whole Bpot Group 1041. A largi> i>ot of irrrgular shape. Several small snots follow it on Jane 4, and ling ilays. Th>< group grailimlly diminishes in size, only one small ipot remaining on Junr 1. This breaks up into yet smaller ipoU on June 9 and 10. Group 1045. A small faint spot on June 4. Several other spots appear following it on June 5. I88 3 . d June 4-429 5-396 6-400 7-I38 8-581 9-426 10-149 11-144 o 9 O 22 36 O 7 9 110 99 132 266 48 37 4 5 o 12 22 O 7 o 5 57 5 70 165 37 38 58 '4-3 14-1 14-1 4'3 '4-7 17-6 18-9 15-1 -117 -ii-S -i 1-4 -11-5 -II-8 10-9 n-i -117 o 2O'6 - 8-0 + 5-3 + IS-3 + 347 +48-8 + 597 + 69-1 1883., June 2-492 3'4 + ; 4-4*9 5-396 6-400 9-426 10-149 4' % 76 33 '5 1 1 4 ,6 469 505 227 S 26 7' 53 57 47 18 8 6 o o 298 4*5 353 308 279 "9 21 4 16 o 347-6 3477 347-o 345-6 345-6 346-4 346-6 345-2 346-8 e -10-7 !O'6 -10-4 i i-i -10-9 10-8 10-8 -ll-j -11-4 e -72-9 60-3 -47-9 -36-5 -23-2 12-6 + 6-6 + 16-4 + 27-6 Means ; ... 6 60 >5'39 -11-45 ... Means 29 204 346-50 10-89 ... Group 1046. A large spot of irregular outline. It undergoes many change* both in shape and size during the period of iti appearance. Group 1042. A small spot A aec>>iul is soon on June 5, and the following day*. The group undergoes several slight changes, and the following spot disappears before June 9. June 6*400 7-138 8-582 9-426 10-149 11-144 "2-537 13-407 14-482 '5-359 16-523 I7'4'3 o '7 68 39 23 '9 37 73 I2 5 S 2 60 60 116 245 474 507 335 365 5'4 930 1095 844 635 557 o 21 5' *5 '4 IO 20 4* 81 39 65 102 229 306 362 33" 203 202 281 537 7'3 641 690 940 294-6 295-0 295-2 294-9 294-7 94 -6 194-6 294-3 294-4 293-8 *937 293-4 June 3-445 4'4'9 5-396 6-400 7-138 8-582 9-426 10-149 5 o o o 8 '4 47 3' 25 34 5 Z 17 8 4 o 4 12 32 18 '3 17 *7 10 5 353-8 353'' 354-2 3527 351-0 353-2 354^ 352-1 - -3 - 7-8 - 7'9 - 8-1 - 9-6 - 8-0 .: 11 -54'2 -41-8 -27-9 -16-1 - 8-0 + 13-2 + 26-1 + 3*'9 2 3 ' -23-3 -22-6 -22-8 -23-2 -22-7 -22-8 -37 -137 74 2 64-0 -44-8 -33'9 -24-5 -11-4 + 7-o + 18-3 + 32-5 +43-6 + 58-9 + 70-4 23 5 -23.9 -23-6 Means ... ... I 7 353-13 - 8-23 ... Group 1043. A small regular spot. Means ... ... 39 453 294-43 -23-24 ... Group 1047. A small spot June 3-445 4-429 5-396 6-400 7-138 8-582 9-426 10-149 11-144 o 9 '3 37 22 7 O 2 5 18 66 47 95 il 60 16 "7 16 '3 ii 26 H '4 o i 3 56 89 66 50 32 8 9 9 327> 3*7-5 327-6 327-0 326-9 327-0 327-1 326-9 326-7 -16-5 -16-2 - 5 -80-6 -67-4 -54'5 IO 2 -16-2 -I 6-2 -16-3 -16-6 ir> -41-8 -32-1 -13-0 - 17 + 77 + 20-7 June 7-138 i 18 . 22 64-2 + 17-4 + 65-2 Means ... 1 22 64-2 + '7-4 Group 1048. Two small spots. Means ... ... 9 40 327-1* -16-38 ... Group 1044. Three spots close together. June 7-138 8-582 9-426 10-149 18 45 o 2 '3 '5* 58 *7 9 22 1 66 78 32 16 352-2 352-4 35''9 353-2 + 7-3 + 6-9 + 6-9 + 7-i - 6-8 + 12-4 + 23-1 + 34-o June 4-429 5-396 33 o 164 33 37 o 188 68 97'9 97-6 + 57 + 15'* + 63-0 + 75-5 Means ... ... '9 128 9775 + '5'45 Means ... 8 48 35 2 -43 + 7-05 ... PHOTO- HELIOOKAPH ic RESULTS, 1682-1885. 2 A 186 ARKAS AND HELIOGRAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitud from Central Meridian. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Group 1049. A small regular spot followed by some smaller spots. Group 1053. Two small spots. '883-d June n - i 44 12-537 i3-47 14-482 !5'359 16-523 5 50 28 33 '4 37 210 168 121 57 18 6 4 '9 '9 8 o 48 169 113 72 32 10 240-9 240-9 240-8 240-3 240-3 240-6 o -24-2 -24-3 24-6 -24-4 24-6 -24-5 -65-1 -46-7 -35-2 -21-6 1883. June 17-413 18-554 19-201 20-593 O O 6 3 17 22 33 27 o 3 2 '5 14 18 '4 o 168-2 168-3 168-6 169-7 o + 47 + 5- + 5'4 + 5-' o -54-8 -39-6 -30-7 -H-3 9 9 + 5-8 Means ... ... I 15 168-70 + 5'5 Means ... ... IS 74 240-63 -24-43 Group 1054. A fine regular spot followed by a great number of small spots. The group under- goes many changes. Group 1050. A small faint spot. June 17 413 18-554 19-201 20-593 21-435 22-226 23-389 24-179 25-554 26-393 27'439 28-372 9 33 21 92 99 62 102 38 46 46 1O 4 4i 218 251 545 700 617 59 428 500 3>7 98 25 '9 39 '9 61 58 34 54 20 28 32 9 5 93 257 239 361 409 337 3u 229 302 217 87 3' 146-8 H4"5 142-8 I43-9 >44'9 I45-3 H3'9 H3'9 143-6 I43-3 143-6 142-9 -i 6-2 -14-3 -14-9 -76-2 -63 - 4 -56-5 June 13-407 o 20 o ii 256-9 - 8-2 -19-1 Means ... ... o 1 1 256-9 - 8-2 15-7 -16-7 16-4 16-0 -,5-9 16-4 -15-6 -15-7 -i 6-2 37-1 24-8 14-0 Group 1051. A regular spot followed by several very small faint spots on June 15. which dis- appear before June 16. + o-o + 10-5 +28-4 +39-2 +53-3 +64-9 June 13-407 14-482 I5'359 16-523 '7-413 18-554 9 '7 9 9 9 5 52 99 97 28 13 26 20 18 7 6 5 3 i ii 106 82 18 7 H 199-9 201-2 I 99 -8 200-5 200-2 199-6 + 20-9 + 20-6 + 21-4 +20-9 +20-7 + 21-2 -76-1 607 -50-4 -34-3 -22-8 - 8-3 Means ... ... 3* *39 144-12 -15-83 ... Group 1055. A small faint spot. Means ... ... 10 56 200-2O + 20-95 June 19-201 i H i H 259H -15-4 +60- 1 Means ... i H 259-4 -15-4 Group 1052. Two small spots on June 17. These have greatly increased in size by June 18. On June 19 they form two lines each composed of a great number of spots, the first spot in each line being the largest. The following spots in each line are measured as one cluster on June 19-21, but are divided into two clusters on June 22. The following portion of the more northerly line disappears before June 23. The individual spots of the whole group show large proper motion. Group 1056. An irregular group, first seen on June 20 not far from the centre of the Sun. It rapidly increases in size on the following days, the smaller spots of the group disappearing or coalescing with the larger spots, so that on June 23 and the following days the group consists almost entirely of three large regular spots. June 17-413 18-554 19*201 20-593 21-435 22-226 23-389 24-179 10 '59 84 i 86 213 58 20 o 4" 867 821 1172 952 53' 167 4i 6 90 48 122 I6 3 58 39 o 2 4 487 469 78i 740 528 319 142 212-3 211-8 2I2'2 2I3-2 2'3'4 214-4 215-4 2'3'S -25-6 24-6 -24-3 -24-1 -23-9 -24-8 -24* -23'3 -10-7 + 3'9 + 12-9 + 32-2 +437 + 55-i + 7i'5 + 80-1 June 20-593 21-435 22-226 23-389 24-179 25-554 26-393 27-439 77 176 ,85 333 142 182 7 1 o 296 874 1574 '935 133 9'5 373 116 40 9 * 9 6 189 92 175 92 o '55 449 822 1104 856 855 484 457 168-8 169-7 169-5 169-2 169-9 171-4 170-5 172-5 10-6 10-4 -10-5 -10-3 10- 1 IO'2 - 9-6 lO'O I2'2 O'O + 10-2 + 25-3 + 36-5 + 56-2 + 66-4 + 82-2 Means ... ... 66 436 213-28 -24-4. ... Means ... ... 97 648 170-19 10-21 ... TAKEN AT GRKNWICH, IN INDIA, AND IS MAURITIUS, IN TUB YEARS 1882 TO 1885. 187 Date. Greenwich Civil Time. ' Areas and Heliographic Positions of Groups of Sun Spots '4 June 24*179 o 21 10 I20-O + IO'2 -13-4 Means ... o 10 160-7 -16-2 Means ... ... to I2O-O + 10-2 ... Group 1064. K>ts on June 17. The group increases in sixe very rapidly on the lays, and entirely changes in appearance. It consists of two spots small spots near them on June it and 29. Only one large spot is ne 30. Group 1060. Three small spots. The photograph of June 15 is badly denned, being taken through cloud. Three small s following with a fen seen on Jc June 27-439 28-372 *9'4'5 30-396 O 33 69 20 44 202 360 138 o *5 77 48 28 '53 397 33' 125-0 125-0 126-2 128-5 10-8 IO - O - 9-0 - 8-8 + 347 + 47'' + 62-0 + 77'4 June 25-554 9 34 4 18 109-3 + 13-8 - 5'9 Means ... ... 4 18 109-3 + 13-8 ... Means ... ... 38 127 126-18 - 9' 6 S ... 188 AREAS AND HELIOGRAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group Longitude from Central Meridian. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Group 1065. Several small spots arranged in two compact clusters. Group 1068. Two spots on July 10. The group increases rapidly and foims a long line of spots on July 12, the first spot being the largest. The group diminishes rapidly after passing the central meridian, the following part of the group disappearing first. The preceding spot shows a rapid forward movement in longitude. 1883. June 29*415 30-396 July 1-431 2-148 3-164 47 88 42 30 8 145 39 278 277 J 54 2 4 48 28 2 4 1 1 74 216 1 80 21 I 172 o 76-1 76-0 76-6 76-8 78-4 o + 5-o + 5-5 + 5-6 + 5-8 + 5-5 + 11-9 + 2 4'9 + 39' 1 +48-8 +63-8 1883.,, July 10-394 11-525 12-294 13-400 H 15-478 16-153 '7 18 19-586 20-150 76 68 83 No pho 70 34 No pho No pho 2 93 452 583 552 tograph. 5^7 360 tograph. tograph. 33 9 6 57 43 45 (4i 37 20 ('3 (7 o 5 107 34' 371 303 303 302 204 '55 105 56 3i o 2l6'I 2I7-5 2l8'3 22O-4 222-5 224-6 2257 226-9 228-2 229-4 23O-I o I I-O - 9-8 -10-3 10-0 o -62-7 -46-4. -35-4 -i 87 - 2-9) + 13-0 + 23-1 + 39'5) + 55-8) + 72-2 + 80-3 Means 27 171 76-78 + 5-48 - 9'9 IO'O - 9-6 - 9' 1 - 87 - 9'3 Group 1066. Two spots which are measured together on July 3 and 4. A small spot is seen near them on July 5. The spots coalesce and form one long irregular spot on July 6 and 7, which, for the sake of convenience, is measured in two portions. This spot breaks up on the following days, and the group rapidly diminishes in size after July n. Means 25 207 223-61 - 979 July 11-525 o Group 1069. Two very small spots. July 3-164 4-506 5^93 6-418 7-53I 8 9-581 10-394 11-525 12-294 13-400 o 65 117 148 '47 No pho 127 140 83 46 28 73 443 611 756 H37 tograph. 982 906 648 33' '59 O 89 1 1 1 109 92 (82 72 80 52 31 26 445 608 582 564 711 630 55i 5'9 408 235 142 291-0 291-4 291-8 290-3 290-2 290-5 290-8 290-3 289-5 290-1 289-1 -22-4 22-O -22-6 -22-5 22'O -83-6 -65-4 -53'3 -41-1 -26-5 3' 22 305-6 -13-6 + 4'7 Means ... 22 305-6 -13-6 22'2 -22-4 22'6 -23-3 -23-2 2 2 -9 12-7) + i-i + 11-5 + 25-6 + 36-4 + 50-0 Group 1070. Three small spots. The first two spots are measured together on July n, 12, and 13. On July 13 the following spot has disappeared, but three spots are again seen on July 14. The group shows considerable proper motion. July 11-525 12-294 13-400 H 15-478 16-153 o IO 52 No pho 43 17 56 1 20 201 tograph. 138 60 8 33 (28 22 8 7 2 105 128 1OO 71 31 196-4 198-4 200'8 201-9 202-9 203-6 + 11-9 + 10-7 + 10-3 + 10-6 + io-8 + i ro ** Means ... 68 490 290-45 -22-55 7 5 -55'3 -38-3 -23-5) - 8-7 + ro Group 1067. A very large spot. A number of small spots appear in its neighbourhood from time to time. The group diminishes rapidly after passing the central meridian on July 14, and breaks up into three portions before July 19. Means 17 85 200-67 +10-88 ... Group 1071. A regular spot. Some small spots appear in its immediate neighbourhood on July 16. These increase in size and number ou tha following days. July 9-581 >'394 11-525 12-294 13-400 4 15-478 16-153 '7 18 19-586 20-150 21-497 24 9 1 5 8 6 9 121 No pho 181 5' No phc No phc 40 24 o 219 486 806 961 I2IO tograph. 974 659 tograph. tograph. 2IO 162 58 62 J33 148 53 79 (92 105 30 (33 (36 39 30 o 566 718 755 75i 792 679 566 389 33 270 . 211 203 I8 3 214-2 213-3 212-9 212-5 212-0 211-8 2II-5 210-8 210-8 210-7 210-7 210-5 2O9'.O 26-2 26-2 -25-7 -26-1 -26-1 26-0 -25-9 -26-1 26-0 -25-9 -25-8 -26-6 -2 5 -8 -75-5 -65-5 -51-0 -41-2 -27-1 -13-6) O'l + 8-2 +23-3) +38-4) + 53-5 + 607 + 77-I July 12-294 13-400 H 15-478 16-153 '7 18 19-586 20-150 21-497 17 57 No pho 132 99 No pho No pho 146 95 58 95 33 tograph. 542 545 tograph. tograph. 779 759 519 45 66 (75 84 57 (65 (72 80 55 42 251 382 365 347 3'7 354 392 429 44 6 383 175-6 176-3 176-4 176-4 176-1 176-4 1767 177-0 I77-5 176-6 i ro -11-3 II'2 i ri ii-i i ro 10-8 -10-7 10-9 -10-4 -78-1 -62-8 -49-0) -35-2 -26-5 -ii-i) + 4'3) + 19-8 + 277 +447 Means ... ... 65 493 211-59 26-03 ... Means ... ... 64 3 6 7 176-50 -10-95 ... TAKKN AT (iKKKNWICH, IN iNIHA, ASH IN MAURITIUS, IN TIIK YKARS 1H82 TO 1885. 189 Areas ami llrui.-i.ipl.!.- I'nsitiuns of Groups of Sun Spots coiUinu- Hit.-. Greenwich Ciril Time. Projected Area of Area for Group. KM Longitude of Group. Mean Latitude of Group. Longitude fr.'in tral Meridian. Date. Oreeuwi.li Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Utitude of Group. Longitude from Central Meridian. Umbra. Whole Sjwt. Umbra. Whole Spot. Umbra. Whole Spot Umbra. Whole pot Group 1072. A great number of very small *pot irregularly distributed over some* area. Group 1075 continued. hat wide 1883., July 19*586 20-150 21-497 22 *3 *4'394 54 3* 59 No pho No pho '4 333 287 200 tograph. tograph. 5* 28 16 34 (28 ( "S 16 171 150 "4 96 78 60 155-0 '55'5 '55'5 557 156-0 1 56-2 o 10-6 -107 I0'0 -10-4 -10-7 o 2'2 + 57 + 13-6 + 36-61 +49-6) + 62-6 I88 3 . a July 13-400 '4 V478 16-153 *4 No pho 45 18 '97 '..".ipii 175 "34 3 (20 *4 10 104 IOO 96 79 o 230-9 230-5 230-1 *3''3 o + '97 + '97 + '97 + '9'5 o - 8-2 + 5'*) + 18-5 + 28-7 Means ... ... '7 95 230-70 + 19-65 Means ... ... 22 100 154-86 10-50 ... Group 1073. , Several very small spots in a straight line. On July 19 the following spoU have disappeared ami the preceding spots have increased in size. These coalesce on the following days, forming a nearly circular spot on July 21. Group 1076. A small faint spot July 19*586 20*150 4 i *5 7 3 I '7 5 '97'3 198-1 -11-7 12-2 +40-1 +48-3 July 15-478 16-153 1? 18 19 586 20-150 2 1 -497 o o No pho No pho 18 "7 *4 5* *7 tograph. tograph. 123 101 '35 o (3 (6 9 9 17 36 10 3* 47 63 55 95 169-2 171-2 171-6 172-0 172-4 '747 176-4 + 8-2 + 8-6 + 8-8 + 9' + 9'* + 8-6 + 8-4 -42-4 -3 ''4 -5'9) - o-3) + 15-2 + *4'9 + 44-5 Means ... ... 2 1 1 19770 -11-95 Group 1077. A small faint spot Means ... ... 6 49 172-50 + 8-69 ... o o 26 5 17 4 '93'5 937 -H'4 -15-1 + 36-3 +43'9 Group 1074. A very fine group of spots, consisting chiefly of a large and nearly circular spot followed at a little interval by a large cluster of spots arranged in a roughly circular manner. These latter spots have greatly decreased in size by July 25, but by July 26 a number of other small spots have formed in their ueighlxiur- hood. July 19-586 10-150 Means ... ... ii 193-60 -H75 ... Group 1078. A small faint spot. July 15-478 16-153 '7 18 19 586 20-150 2 I -497 22 *3 *4'394 25-561 26-405 2 7 '444 *9 No pho No pho *77 76 205 No pho No pho 188 III 37 84 *93 tograph. ' -r.Mj'ii. 1635 1468 1350 tograph. togtaplL 1287 844 393 80 53 (89 (1 1 S I'M 97 I 10 (119 (128 "37 "7 60 219 547 683 819 955 8*3 7*4 790 855 921 876 581 333 '34'4 130x5 130-6 131-1 1317 '33' >33'6 134-0 '34'4 134-8 136-4 '347 S4'S -15-0 -'47 -14-8 -15-0 -77'* -72-6 -56-9) -41-2) July 19-586 o iti o 8 171-7 + 5-' + '4'5 '5 ' ~'5'4 -'47 -15-0 -15-2 ~'5'5 -'57 -15-8 16-0 2 5'5 -16-8 + '7 + '4'9) + 28-0) +4''* + 58-2 + 677 + 81-2 Means ... ... 8 1717 + 5' Group 1079. A number of spots arranged in a straight line. The following spots diminish in size and gradually disappear before July 25. July 19-586 20-150 21-497 12 *3 *4'394 25 561 16-405 *7'444 28-400 84 54 4' No pho No pho 58 '3 21 9 o 508 343 353 tograph. :<^-i i|.l.. 261 196 80 33 *4 67 38 *3 (28 (3* 37 '5 16 9 406 242 205 1 86 1 66 '4? 126 61 34 4* 109-4 109-4 lO'O 10-5 10-9 11-4 11-5 1 117 ...8 1115 ~' 5 l -15-6 -47-8 -40-4 -21-9 - 87) + 4'6) + 17-8 + 33'3 + 447 + 58-5 + 70-9 Means 9* 701 I33-3* -15-22 Group 1075. Several small spots. Th preceding sjot increases in size en the following (lavs, and becomes circular in khape ; the other spots diminish and gradually disappear. -'5'3 -'5'3 ~'5'4 -15-9 -159 16-2 -16-2 July 16-153 17 18 8 No pho No pho 38 ti'-r.iph. tograph. ( (*4 3< 77 '*4 152-4 '53'3 154-1 10-2 -I0"3 -IO- 5 -50-2 -34'*) -i 8-*) Means ... 27 162 1 10-81 -15-67 190 AREAS AND HELIOGRAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Group 1080. A very fine group consisting of a very large spot showing much intricate detail, with a great number of small spots preceding it. These small spots, which are irregularly distributed over an extensive area, diminish greatly between July z8 and 29. The large spot is somewhat indistinctly seen on July 31, as it is then close to the limb, but it appears to have broken up into several parts . Group 1084. An irregular group composed of three or four spots. The group diminishes in size on July 24, and the following days. 1883. July 20-150 21-497 22 23 2 4'394 25-561 26-405 6 18 No pho No pho 33 12 45 163 tograph. tograph. 1 68 76 33 >7 20 (if ('9 18 6 o 136 111 152 122 93 39 16 o 68-6 68-5 68-3 68-0 67-8 69-0 68-7 o + 8-2 + 8-3 + 8-6 + 9' + 9-3 + 9' 8 + 9'5 8l'2 -63-4 -50-9) -38-3) -25-8 - 9-2 + 17 1883. July 19-586 20-150 21-497 22 *3 24-394 25-56I 26-405 27-444 28-400 29-449 3 3 1 '475 z? 233 No pho No pho 447 554 408 47 39 6 266 No pho 90 155 64, 1561 tograph. tograph. 3013 35 1967 2 495 2252 1461 tograph. 814 57 230 (^35 (240 2 45 286 212 2 57 2 43 198 (176 154 589 1365 1508 '553 '597 164.2 1606 1021 1374 1388 1092 1360 1627 o 757 74'5 747 74'5 74'3 74' 1 73'4 73-2 73'i 73-2 7 2 7 73'3 73'9 o - 9-3 - 9-1 - 9-0 - 8-9 - 8-8 - 87 - 8-9 - 9'5 - 9'9 - 9-8 - 9-8 10-6 -11-3 o -81-5 -75-3 -57-2 -44-6) -32-1) -19-5 - 4-8 + 6-2 + 19-8 + 32-6 + 45'9 + 60-0) + 74-0 Means ... ... 4 1 06 68-41 + 8-96 ... Group 1085. Several very small spots, somewhat scattered. July 24-394 25-561 3 9 20 59 i 4 ii 3' 65-0 65-6 + 18-7 + 18-1 -28-6 -12-6 Means '95 1363 73-89 - 9'5i Means 3 21 65-30 + 18-40 ... Group 1 08 1. A small faint spot. Group 1086. A regular spot. Two very small faint spots are seen near it on July 27. July 20-150 2 10 3 14 218-7 - 2-8 + 68-9 July 24-394 25-561 26-405 27-444 28-400 29-449 3 S'+7S Aug. i -407 2'2I I 40 34 4 1 53 5 1 4 1 No pho 27 15 7 210 228 217 269 267 217 tograph. 125 105 49 32 21 23 27 26 21 (20 18 '3 9 168 141 I2O 137 133 112 9 8 84 9 60 41-9 41-7 4'7 41-9 41-9 42-3 42'3 42-2 42-5 43'3 + 9'3 + 9'i + 8-9 + 9'i + 8'9 + 9'i + 9'2 + 9'3 + 9'3 + 9'6 -51-7 -36-5 -25-3 Means ... 3 14 2187 - 2-8 ... Group 1082. A very small faint spot. 11-4 + i'3 + '5'5 + 28-9) + 42-3 + 54'9 + 66-3 July 20-150 O 2 186-3 + S' + 36-5 Means ... ... 21 U4 42-17 + 9 >l8 ... Means ... ... I 186-3 + 5' 2 ... Group 1087. A small spot. A very small spot precedes it on July 26. Another small spot follows it on July 27. Group 1083. Several very small faint spots close together. July 24-394 25-561 26-405 2 7'444 28-400 29-449 o 9 12 9 o 16 29 20 4 >7 17 O 8 o 7 5 o 23 24 13 2 4 9 9 25-9 26-8 27-8 27-2 29-1 30-2 I0'0 -10-6 - 9'9 -107 I0'0 I O'O -677 -51-4 -39' 2 26-1 -11-5 + 3'4 July 20-150 21-497 22 23 24-394 O No phc No phc 2 8 i- tograph tograph 27 o o (o (I I 7 1 1 12 13 13 95-6 96-5 96-3 96-2 95'9 + 57 + 5'6 + 5'3 + 5"' + 4-8 -54-2 -35'4 -22-8) -i'3) + 2 '3 Means ... ... o I I 96-10 + 5'3 ... Means ... ... 3 17 2 7'3 IO'2O ... TAKEN AT GhKKNWICII, IN I.NUIA, AND IN MAURITIUS, IN TUB VEAKS 1882 TO 1885. r.'i 1>V,.-. Greeunii-h i nil Time. Areas uiul Hclioyrupliic Positions of 7 6-7 + 5-6 Means ... ... 53 186-75 + 9-65 ... Group 1089. Two spoti of nearly equal size. The preceding spot breaks up into several portions on August i, and both snots diminish in size on August z and 3, the following spot more rapidly than the preceding. Group 1094. A regular spot with two smaller spot* to the south of it The latter disappear before August iz. The three spots are measured as one on August S. Some very small spots are occasionally seen in the neighbourhood of the principal pot July 31-475 Aug. 1-407 2-21 I 3-564 89 69 3* 20 420 458 229 9' 49 37 '7 12 *3' *43 i*3 54 343-4 343'' 344-3 3447 -13-5 -'3'5 -'3'4 ->3'5 -.6-5 - 4'5 + 7'3 + 25-6 Aug. 8-298 9-421 10-391 11-431 12-461 13-389 14-391 '5 '44* 16-489 17-133 18-442 '9 - 379 20-410 16 3" 30 56 70 70 88 . 6* 77 37 48 4 II 9 2 59 466 353 401 388 436 37* 3*4 298 "3 9 17 46 37 *5 36 4 37 46 JS *5 1 o 345 3'3 39' 232 229 207 227 203 95 199 208 i*7 65 '77'9 178-4 178-3 178-3 178-1 '77'9 177-6 '777 177-9 178-4 177-6 177-8 177-6 -11-4 -irj -11-3 -10-7 1O' 10-1 lo-l 10-1 - 9-8 " 9 '1 - 96 - 97 - 9'5 -78-6 -63-4 50-6 -36-8 -*34 -11-3 + 17 + 15-6 + 29-6 + 387 + 55'' + 677 + 8rs Means ... *9 63 343-88 -13-48 ... Group 1090. Three small spot*. Aug. 7-424 n 54 7 33 298-1 -'47 + 3'' Means ... 7 33 298-1 -14-7 Means ... ... 3* 226 177-96 10-25 ... Group 1091. A small regular spot. Two small faint spots are seen near it on August 8. Group 1095. Two small regular spot*. The two spots tend to separate on August 10, n, and 11, and the Following spot disappears before August 16. A number of very small faint spot* are seen near them on August 1 1 and iz. Aug. 7-424 8-298 9-421 *9 10 o 112 77 29 ll 5 o 7' 4* >5 230-4 *3'3 230-5 + 15-6 + '5'5 + 15-1 -37-6 -26-2 -11-3 Aug. 10-391 "'43' 12-461 13-389 '4'39' '5'44* 16-489 17-133 18-442 9 58 5* 5 34 4 9 .8 o 83 *74 295 284 161 57 35 3' 22 9 40 3 *7 '7 2 5 5 o 79 191 '7' '5' 81 *9 20 >9 '9 169-9 170-5 171-1 170-4 170-2 171-6 176-4 176-6 1767 + M-I + iro +ii-o + 11-5 + 11-6 + 11-6 + 11-6 + 11-5 + H-3 -59-0 -44-6 -30-4 -18-8 - 57 + 9-5 + 28-1 + 36-9 + 54'* Means ... ... 8 43 230-40 + 15-40 Group 1092. Several small faint spots. The components of this group are very unstable. Aug. 7-424 8*298 9-421 10-391 11-431 12-461 13-389 '4'39 ' '5'4-r* o o o o 34 '9 o o 67 *7 12 15 130 I 4 6 84 6 o o o o o '9 10 o 7 75 21 8 8 7* So 48 4 198-4 196-6 196-2 193-2 194-8 192-3 1937 192-8 192-1 -16-5 -16-5 -'7'4 -17-8 -14*4 -7'4 -17-3 -17-6 -'7'5 -69-6 -59"9 Means '5 84 172-60 + 11-36 ... -45-6 -357 -20-3 - 9'* + 4-5 + 16-9 + 30-0 Group 1096. A small faint spot. Aug. 11-431 o >5 o 21 148-0 -13-0 -67-1 Means 3 36 194-46 -1693 M eans ... ... o 21 48-0 -13-0 ... 192 AREAS AND HELIOGRAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. Date. Greenwich _ Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Group 1097. Two spots. Group 1 1 o I . A compact cluster of very small faint spots. Part of it has disappeared before August 1 8. i88 3 . d Aug. 14-391 o 118 o 362 o *53'4 o -16-5 o + 77'5 1883.,, Aug. 17-133 18-442 19-379 I O o 3' 20 I I 2 47 18 8 o 68-8 68-1 68-9 o O'l - 0-3 O'O o -70-9 -54-4 -41-2 Means o 362 253-4 -16-5 Group 1098. A regular spot. A very small spot is seen near it on August 1 6, and another on August 22. Meaus I 24 68-60 - 0-13 Group 1102. A small faint spot. On August 19, five spots are seen scattered over a wide area. Two of these (long. 55"o) are measured together. On August 20, only two spots remain. Aug. 15-442 16-489 '7-133 18-442 I9'379 20*410 2 I -409 22*41 I 23-418 24-423 25-430 26-465 18 20 12 55 ' 47 5 1 34 28 38 20 IS 3 47 H5 128 273 268 243 250 2 37 204 '34 62 38 36 22 II 3 6 25 28 "9 16 25 16 16 6 95 127 112 I 79 142 '34 138 38 132 106 67 70 89-2 89-1 89-2 89-2 89-3 89-4 89-3 89-4 89 i 89-0 88-6 877 -16-5 -16-5 -16-3 -16-3 -16-5 -16-6 16-4 -167 -.6-5 -.6-5 -16-3 -15-9 -72-9 -59-2 -50-5 -33'3 20-8 - 7-0 + 6-0 + I9-4 + 32-4 + 45-6 + 58-6 + 71-2 Aug. 17-133 18-442 I9-379 20-410 I 3 15 8 '4 21 9 1 49 5 5 12 5 58 2 9 75 3' 55-6 53-' 57-0 57-7 + io-6 + 12-2 + 11-3 + irz 84-1 -69-4 -53-i -387 Means ... 7 48 55-85 + H-33 Group 1 103. A fine regular spot, followed on August 21 and succeeding days by a smaller regular spot. A number of small spots are seen at times between the two. Two small spots are seen following the group on August 27. The smaller regular spot disappears before August 30, leaving the principal spot alone. Means 21 I2O 89-04 16-42 ... Group 1099. A single spot. A small spot is seen near it on August 1 8, and another on August 19. Aug. 20-410 21-409 22-411 23-418 24-423 25-430 26-465 27-433 28-400 29 A 30-469 31-282 Sept. 1-396 1 1 54 58 '37 '5' 154 149 100 114 No pho 15 37 7 68 379 633 844 984 879 775 643 588 tograph. 253 196 42 3i 87 57 IOI 95 88 80 56 68 (42 15 49 26 '93 608 64, 637 621 499 420 359 353 298 243 261 162 1 8-8 14-6 I3-5 I3-3 13-3 I3-3 14-2 ,5-9 16-2 17-4 18-5 '77 18-4 14-8 -15-7 -15-6 -15-8 -15-8 -'57 ~5'5 -15-3 -15-2 -15-0 -147 -H7 -14-2 -77-6 -687 -56-5 -43'4 3'i -167 - 2-3 + 12-3 + 25-4 +40-2) + 55'o + 65-0 + 80-4 Aug. 16-489 I7-I33 18-442 I9-379 20-410 13 4 20 6 38 72 100 3i 17 2O 5 i5 61 82 76 21 10 79-6 79-4 78-8 77-9 76-3 -157 -'57 -16-5 -I 6-2 18-0 -687 60-3 -437 -32-2 20'I Means ... ... 9 5 78-40 16-42 ... Group noo. Two small spots which are measured together. Means 63 407 1578 -15-23 Group 1 1 04. Two small spots on August 25. The preceding spot disappears before August 26. Aug. 17-133 18-442 I9'379 5 o 7 26 37 15 7 o 5 34 29 10 74-0 73-9 74-0 10-8 -107 10-8 -6 5 -7 -48-6 -36-1 Aug. 25-430 26-465 27-433 o 4 o '7 3' 23 3 10 '9 21 55'' 53-4 58-3 + 10-4 + 10-2 + 10-9 + 25-5 + 36-9 + 547 Means ... 4 24 73-97 -1077 ... Means ... i 17 55-60 + IO-50 TAKES AT GREENWICH, IN IXMA, AXI> IN MAURITUS, IN THE YKAUS 1882 TO 1885. 193 > Areas ami Hclio^-nipliic I'oeitions of Groups of Sun Spots continued. DM* Qreinwich Civil Time. Projected Ana of Area for Group. Mean Longitude of Group. Mean Latitude of Group Longitude from Central MfiidUn. Date. Greenwich Civil Time. Projected Area of An-a fur Group. Mean Longitude of Group. Mean Latitude of Ur l/oligitu.li from Central Meridian. Umbra. Wholi Si*!. Umbra. Sp.it. Umbra. Whole Spot. Umbra. Whole Spot Group 110$. Tw<> -null spots on August 15. Hi.tli increase in liie on the following days, the precr.i '-ei-ominc a large regular spot, the following a stream <( small spots. The following part of the group disappears before Auguit 30. A small spot is sten in advance of tin- group on August at. Group 1108. Two large regular spots with a number of small upota between thi-m. The small spots (which are measured with the following spot on September 3) disappear before September 7. The preceding large spot undergoes a remarkable change of shape between August 30 and SeptemKT i. 1883.., + 3 26-465 433 18-400 29 * 30-469 31-282 1-396 3 87 49 '39 No plio 21 '3 . o 47 35* 495 568 f '!'' **7 '73 53 7 45 26 80 (50 '9 16 o 16 181 161 3 * 8 267 206 221 ISO 13-1 1 6*6 16-8 ,8-3 '9'4 20-5 20-7 21*7 o + 11-1 + 10*6 + 20-8 + 21-1 + 207 + 20-3 + 19- 9 + 20*0 o -16-8 + o-i + '3-2 + *7'5 + 42-3) + 5"-o + 68-0 + 83-7 1883. a Aug. 30-469 31-282 Sept. 1-396 2 3'4'7 4-395 S'49- 1 6 7-I44 8*506 9*567 55 176 181 No pho 343 *47 217 No pho 94 69 o 367 1010 1526 lograph. 1664 '555 1284 tograpli. 648 3 8l 53 48 129 |68 (| 7 8 |8 7 '39 '37 (in 85 120 3'.0 7*7 908 907 906 876 803 694 * 15 657 '3' o 174-0 171-1 174-0 1738 173-6 273-3 172-8 273-4 273-9 *74'3 266-0 D -14-8 -'5'4 -'5'5 -15-5 ~'5'5 -15-6 -'57 -15-8 -'5-9 o -49-5 40-6 -24-0 -10-9) + 2-2 + I4-8 + 28-9 f4'3) + 5>7 + 70-1 H-75'9 Ml-.: 30 209 18*40 + 10*58 -14-6 Three small sp< a fresh spo its on August 17. The group increases in size on the following days, t of ii-^ul.ir outline appearing ou the preceding side. The following the group consist* of an irregular scattered stream of many small e group diminishm rapidly after pas-ing the central meridian on and only two small spot* are left on September 3. The group is is a whole on September i. Means ... ... 118 682 1-2-84 -15-48 ... Group 1109. A fine regular spot accomi*nied by two or three very small spots close to it. Aug. 30-469 31-281 Sept. 1*396 2 3'4 '7 4-395 5'49 2 6 7''44 8*506 9-567 10-368 g 96 No pho 161 150 150 No pho 9' 7* 46 9 171 424 640 togi ipb 846 916 1014 1- .HMj'l 710 430 36l 93 67 7 73 (84 94 84 8; (73 60 61 60 21 426 453 49' 492 493 5" 575 512 468 370 469 "4 *557 155-1 255-2 154-8 254-4 *537 153-2 153-1 153-' 152*6 151-9 153-6 -18-4 -18-4 -18-4 -18-7 18-9 18-9 -19-1 -19-1 -19-1 -19-2 -19-7 -19-3 -67-8 -57-6 -42-8 -19-9) -17-0 - 4'8 + 9'3 + 10-1) + 30-9 +48-4 + 61-8 + 74- 433 4.00 29 30-469 31-281 pt. 1-396 2 3'4'7 4-395 5 '49* 6 73 58 5' No pho '9 10 61 348 43" 386 216 V :- 103 9 25 6 , 5 (4 3 16 *5 (10 '4 o 56 *39 *33 217 200 120 100 79 97 57 308-8 310*6 311-6 314-6 3'5'S 318-1 318*2 3>8'3 319-1 319*8 - 8*9 - 9' - 9' - 9'' - 9'* - 9' - 8-9 - 86 8*9 -54-8 40-2 -24-6) - 8-9 + 2-8 + 20*1 H-33'5) + 46-9 + 60-6 4-75-9 - 9-0 Means ... ... 70 457 153-96 -18-95 us 22 141 315*56 8-98 Group n 10. A large regular spot followed at a little distance by several mall spoU which differ greatly in number, arrangement, and area from day to day. Group 1 107. 1 A fine group appealing suddenly near the centre of the sun and consisting at first of several small spots in two clusters. On August 30 it becomes two lar^e spots, both closely arronipaninl by several very small spot*. Sept. 1-396 2 3'4'7 8 No pho 80 95 95 No pho 84 87 59 70 No pho 35 59 bt| .;!. 54' 434 **s togl ffa S ZI 57* 429 463 ' k- iph. 4* '9 (43 67 62 S3 (48 4* 45 34 46 (47 47 ,46 306 466 285 268 266 264 298 148 35 *49 192 1187 117-5 116-3 117-8 118-7 it 8*9 119-0 119-9 119-7 119-9 110-4 120-8 + 107 + 10-8 -f-io-9 + 10-8 + 10-9 4.11*1 + 11-3 + 11*0 + n i + 1 I'O + 11-0 + I I'D --.79-3 -67-2) -55-' -40-7 -25-2 -14-2) - 3'* + '57 + 29-6 + 4'3 + 547) , +69-1 1 Au^. ;**40o *9 30-469 31 282 1 Sept. 1*396 | 34'7 ,-6 No pho 255 '37 109 No plic 26 259, . . 867 6>7 84 9 2 ("4 136 79 76 (59 4' '35 382 629 501 457 372 286 339> 3397 339-9 339-8 34'5 341-2 34'-9 - 5 '! - 5'6 - 5'3 - 5-2 - 5' - 4-8 - 4'5 -4 + 2'5) + 16*4 + 17*1 + 4^-5 + 56-0) + /0-5 4-395 5'49 2 6 7' '44 8-506 9-567 10-368 1 1 11-483 1 Mi-a: - ... ... 85 395 34"34 -5''7 Means ... ... 46 *74 118-97 + 10-97 PHOTO-HELIOORAPHIC RESULTS, 1882-1885. 8 B . 194 AREAS AND HELIOGRAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Group 1 1 I I . A small spot. Group 1 1 1 6. A small faint spot. 1883. d Sept. 3-417 4'395 5-492 4 10 8 33 36 23 4 7 5 28 25 '3 o 217-9 217-9 217-8 o - 4-9 - 5-1 - 5-2 o -53-5 40-6 -26-1 1883.,, Sept. 10-368 o 6 o 4 215-9 + 18-5 + 36-3 Means ... o 4 215-9 + 18-5 Means ... ... 5 22 217-87 07 Group 1117. A regular spot closely followed by several small spots. The group undergoes many slight changes, and diminishes rapidly after passing the central meridian on September 16. Group 1 1 12. A small spot. Sept. 3-417 4-395 o 9 33 16 36 201'2 199-8 -16-2 -16-8 -70-2 -587 Sept. 10-368 l I 12-483 13-489 14-412 16-480 17-411 18-537 4 No pho 4' 47 55 21 23 6 tograph. I 5 6 304 262 '35 97 38 37 I I (23 35 32 3' 1 1 1 1 o 3 43 87 131 203 150 70 49 '9 21 98-2 97'9 96-5 97'4 98-2 98-2 98-4 98-2 + 10-6 + 10-9 + 11-4 + 11-5 + 11-6 + 11-7 + 117 -81-2 -53-8 Means 26 20O-50 16-50 ... Group 1113. A small spot. -41-9 -28-8 -13-1 - 0-7 + H-8 + 26-5 Sept. 4-395 8 10 190-! + 16-4 -68-4 Means ... ... 10 190-1 + 16-4 ... Means '7 86 97-93 + 11-31 Group 1114. A very large regular spot. Ou September 10 a large peuumbral spot is seen detached from the principal spot. It coalesces with it before September iz. Group 1 1 1 8. A small spot. Sept. 8-506 9-567 10-368 II 12-483 13-489 14-412 '5'54" 16-480 17-411 18-537 19-465 20-297 106 202 176 No pho 321 39 2 376 428 362 221 I 7 6 33 44 826 1043 tograph. 1806 1789 1671 1696 1461 1279 825 423 53 198 214 '47 (170 194 226 217 265 252 185 221 68 o 818 873 877 986 1094 1032 966 1048 1015 1070 1029 880 278 I34-' '34'3 133-6 I33-4 133-2 132-7 132-5 132-3 131-9 '32-3 1297 2I-I 21-2 -21-4 -21-6 -21-8 -21-9 22-0 -21-7 22-0 22'2 -22-3 22'I -22-5 -70-1 -55-8 46-0 -32-3) i 8-r Sept. 12-483 i 8 i 7 '97'4 -17-9 + 457 Means ... i 7 '97'4 -17-9 ... - 57 + 6-2 + 21-2 + 33-4 + 45-3 + 60-6 + 7^9 + 81-2 Group 1119. A spot of irregular outline. It undergoes frequent changes, and small spots appear in its neighbourhood on September 15 and the following days. Sept. 12-483 13-489 14-412 "5-54 1 16-480 17-411 '8-537 19-465 20-297 21-153 22 326 23-459 24 53 76 93 122 118 I2 5 '54 105 73 70 181 354 557 729 623 687 775 853 950 624 595 302 52 60 68 48 5' 63 60 65 86 66 61 94 387 399 455 34" 353 39' 44 i 529 394 497 407 74-3 74-1 73-8 74'4 75-2 74-8 74-8 75-0 74'9 75-1 757 75-8 + 10-6 + 10-4 + 10-4 + 10-3 + 10-8 + 10-4 + 10-8 + 11-2 + 11-6 + i i '3 + 11-3 + 10-7 -771 -64-3 -52-4 -3 6 '9 Means ... 181 920 132-60 21-83 Group 1115. A cluster of several spots. -237 -i 1-8 + 3-' + 26-4 + 37'9 + 69-0 Sept. 10-368 1 1 12-483 16 No pho 8 46 lograph. 6l 1 1 (10 8 3' 58 84 218-4 218-7 218-9 - 8-0 - 8-2 - 8-3 +38-8 + 53-0) +67-2 Means 10 58 218-67 - 8-17 Means ... ... 65 420 74-83 + 10-82 ... TAK*X AT GRKXWK-H, IN INMA, ASH IN MAURITIUS, ix TUB YKAHS 1882 TO 1885. 195 Areas and Heliograph!' IVsitioiis of Groups of Sun Spots continued. I.M. ,!'<. : from Central Meridian. Data. Greenwich Civil Tim*. Proje Area l'i:,i'- ,. Spot Area Oroi Umbra. for ip. Wll.,1.. Spot. Mean longitude of Group. KM Latitude of Group. Longitude from Central Meridian. Date. Greenwich Civil Time. Projected Ana of Area for Group. Um Longitude of Group. Mean Latitude of Group. Umbra. Whole Spot. Umbra. Whole Spot. Group 1110. A until upot. Group 1115. Three ma!l faint spota. ;.a ' 13 '4 8 9 14-412 '5'54' O 21 21 66 21 O 18 O '> ;=; 2 s 183-1 1798 176-6 o + 6-0 + 6-1 + 7'* o + 447 - _. 1883. Sept. 22-326 o 1 1 O '4 o 3'4'5 + 18-4 -6 7 -3 + 53 6 + 65-3 Means ... ... ... O '4 34'5 + 18-4 ... HIS ... ... 6 32 179-83 + 6-47 ... Group 1 1 26. A regular spot. Group 1 121. Four small spota on September 13. The two middle spots being close together are measured as out. Only two ipoU remain on September 14. Sept. 26-559 z7'397 28-422 *9'394 3'' 34 Oct. 1-523 2-563 3-195 4' 2 95 5'45* 6-541 7''44 8-148 O '9 33 33 36 *7 35 45 34 2 5 17 '3 5 48 79 163 "75 130 226 308 *79 2 4' '4' 80 75 34 O 26 30 2 4 *3 16 '9 26 21 18 16 '5 12 120 109 '47 "I 146 128 '7' '59 48 103 77 9* 82 250-6 250-4 250-5 250-0 249-8 250-0 2 49'5 2 49'5 249-3 248-9 248-5 248-2 248-1 19-0 -19-2 18-9 18*9 18-9 19-0 -75-3 -64-4 50-8 -38-5 28-9 -10-4 + *'9 + 12-5 + *5'5 +4 0< 4 H-54'4 + 62-0 + 75'* 489 14412 4 3 *4 37 2 2 64 '9 I26-1 126-7 + 4'3 + 4-1 -12-3 4- 0-5 Means ... ... 2 4 2 116*40 + 4-20 ... -18-4 -187 Group 1 1 22. A group appearing suddenly naar the centre of the sun. It consists at first of three small spots which are measured together. It increases in size on September 14, and then becomes a regular spot, followed by two compact clusters of small spots. These two clusters are measured as one on September 15 and 16. 18-7 -18-3 -18-1 -18-3 -18-4 Means ... ... '9 124 149-48 -iS-68 ... Sept. 13-489 14-412 '5'54' 16-480 17-411 18-537 19-465 20-297 9 57 89 93 75 ti 1 06 435 348 47 3'4 226 76 28 10 3' 50 5 < 56 49 3* o 56 229 193 2 S9 2 3 2 238 150 "4 128-9 129-5 130-9 131-4 131-1 131-4 133-6 I30-8 - 9-6 - 9'5 - 8> - 8-4 - 8-8 - 8-5 - 8-2 - 8-0 - 9'5 + 3'3 + 19-6 + 3*-5 + 44-5 + 59'7 + 74'i + 82-3 Group 1 117. Several very small ipota. Sept. 28-422 *9'394 3 - '34 8 o o 63 2 7 16 4 o o 34 15 10 303-3 302-3 303-0 -'4'5 -12-6 ->3'4 + z'o + IJ-8 + H'3 Means ... 36 185 130-95 - 8-68 Means ... i 20 302-87 -13-50 ... Group 1123. A small spot. Group 1 128. Several very small spota. 1 Sept. 16-480 17411 | 18)37 o o 3 24 34 16 o o 2 4 34 12 I 24-3 +l8'6 25-6 +I8'3 25-4 + 18-1 -74-6 61-0 Sept. 29-394 3'34 o 34 ii o o Z 4 12 *S4'3 252-1 20-8 -21-5 -34'* -26-6 4 3 Means ... ... o 18 253-10 21'IC ... ins ... ... ... ' 2 9 25-10 +18-33 Group 1 129. A small spot. Group 1 124. A small spot. Sept. 19-394 30-134 o 3 20 9 o 2 22 7 214-8 225-2 + I3-I + 13-0 -63-7 -53'5 1 Sept. 22-326 o 4 o 5 3>7'4 - 7'4 -64-4 1 Means ... ... ... o 5 3'7'4 - 7'4 ... M eans . . . ... ... ' '5 225-00 + 13-05 196 AREAS AND HELIOGRAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Group 1 1 30. A fine spot with a smaller one following it. Some small spots appear near them on October 7, but disappear before October 10, and the principal spot alone remains on October n. Group 1 133. A regular spot. A small very faint spot is seen near it on October n, and two on October iz. 1883., Oct. 5-452 6-541 7-I44 8-148 9-284 10-549 11-173 12-167 13-415 14-548 15-383 16-522 17-397 25 63 87 101 90 1 60 122 131 , 5 6 85 I I I 43 27 '44 362 4'5 532 628 747 659 679 635 488 405 269 104 78 87 93 82 59 93 70 76 98 63 101 61 78 45 496 444 43i 412 435 378 393 39 s 363 366 384 294 131-0 130-3 1297 129-2 129-1 128 9 128-9 128-7 128-0 127-7 1277 127-3 127-6 -22-4 22-1 -22-3 -22-6 -22-3 -22-3 -22-4 -22-5 -22-4 -22-5 -22-4 -22-4 -22- 7 o -77'5 -63-8 -56-5 -437 -28-8 -12-4 4"i + 8-6 + 24-5 + 39-2 + 50-2 + 64-9 + 767 I88 3 . d Oct. 2-563 3-295 4^95 5-452 6-541 7-I44 8-148 9-284 10-549 n-73 12-167 3-4i5 14-144 32 44 59 93 2 4 61 64 44 5i 16 21 7 2 227 241 436 354 373 377 342 242 254 173 "5 52 5 51 48 45 56 5' 3i 33 24 33 12 21 H 3 358 259 335 213 199 196 177 132 .63 128 'i5 109 70 o 176-2 176-2 176-3 176-9 176-9 177-2 177-2 177-5 178-1 178-6 178-6 178-7 177-6 o - 6-0 - 7-0 - 7" - 7-c - 6-8 -6-9 - 6-9 - 67 - 6-5 - 6-3 - 6-6 - 7' - 6-3 o -70-4 -60-8 -47-5 31-6 -17-2 - 9-0 + 4'3 + 19-6 + 36-8 +45-6 + 58-5 + 75'2 + 83-8 Means 80 403 128-78 Means ... ... 32 189 177-38 6-70 ... 22-41 Group 1131. A small spot. Two smaller spots are seen near and measured with it on October 6, and on October 7 the group consists of a great number of very small spots. Group 1 134. A regular spot, A small spot follows it on October 8, and other small spots appear in its neighbourhood on October 10 and following days. The principal spot diminishes in size at the same time, so that after ( ictober 14 the group consists of a great number of small spots irregularly distributed. Oct. 6-541 7-I44 8-148 9-284 10-549 11-173 12-167 '3-4I5 14-548 '5-383 16-522 17J97 o 7 '3 20 33 36 46 45 4' 73 3 2 36 25 3' 83 142 197 2'3 292 257 244 449 282 214 o H '4 '4 '9 20 23 23 24 47 28 45 IOI 62 90 103 H3 114 148 132 '39 285 249 2/7 1 lO'I 109-9 I I 0-0 I iro 112-0 1127 114-8 I l6'2 117-1 "57 118-2 118-7 + 11-2 + iro + i i-i + 1 ro + I2'0 + IO-5 + 10-4 + 10-5 + IO-5 + io-8 + 10-9 + 1I'0 84-0 -76-3 62 9 -46-9 -29-3 -20-3 - 5'3 + 127 + 28-6 + 38-2 + 55-8 + 67-8 Oct. 5 '4 5 2 6-541 7'i44 O I 9 8 25 i 6 7 3' 250-1 248-0 249-7 -11-9 -11-3 12-0 + 41-6 + 53'9 + 63-5 Means ... '5 249-27 -11-73 Group 1132. A small spot on October 5. On October 6, 7, and 8 the group is composed of a few faint and widely scattered small spots. It has undergone an entire change before October 9, and then consists of two spots with some very faint spots near them. The group undergoes several slighter changes on the following days. Only one spot is visible on October 15. Means 23 '5' 113-87 + 10-91 Group 1135. Several very small faint spots on October 7. On October S two dark and well- defined spots have formed. On October 9 the group consists of a great number of small spots extending over a large area. The group continues to increase in size until it passes out of view at the west limb. Oct. 5-452 6-541 7-I44 8-148 9-284 10-549 11-173 12-167 i3'4' 5 14-548 15-383 7 5 10 7 63 27 61 32 74 o s 74 78 43 1 68 361 434 320 142 29 4' 8 4 8 4 33 '3 32 18 5' o o 18 59 55 26 88 184 226 183 96 *9 60 144-7 144-0 144-0 144-4 '45-5 '45"5 145-2 145-6 I44-8 146-4 146-3 ' 5'9 - 47 - 5'3 - 5'3 - 5'9 - 5'5 - 5-6 - 5-8 - 5'9 - 6-2 - 6-3 -63-8 -50-1 -42-2 -28-5 -12-4 + 4'2 + 12-2 + 25'5 + 41-3 + 57-9 + 68-8 Oct. 7-144 8-148 9-284 10-549 1 1-173 12-167 o 33 20 23 3 24 H3 94 259 239 44 o 21 '7 16 39 6 '3 7 2 74 316 440 223 206-1 206-5 206-3 205-3 205-7 203-2 in 10-2 - 9-8 -10-3 1O"2 -10-5 + 19-9 + 33-6 + 48-4 + 64-0 + 72-7 + 83-1 Means ... 16 93 '45-13 j - 5^7 Means ... ... '7 190 205-52 -10-35 ... TAKEN AT < IRKKNWUII, IN INDIA, AND IX M ACltlTIUS, IN THE Y KAILS 1882 TO 1885. 197 A as uml llelin^nipliii 1 Positions of Groups of Sun Spots continued. Date. Greenwii-h 1'roj. Area of Area fur Group. Mean I ... IIKltVI.il- of Oroup. M..,, Latitude of Group. Longitude from Central Meridian. Date. Greenwich CiTil Time. Projected Area of Area for Group. Mean I^illKltUilr of (Sn.np Utt : ..lip. ' .! -.,:. Central Meridian. Cm bra. Whole Uml>ra. Whole Spot Umbra, Whole Spot. Umbra, Whole S|X,t. Group 1136. -mall |>tsi)ii Oi-tolx-r 7. Tli'' pi...- lini; -p"t in. rrasesin size on the following -mull spots appear near it, and /. The smaller spota dia- appeal I'ffore Octobsr 17. Group 1139. Three spots on October 9. One of these disappears before October 10, whilst the preceding spot aeparatea into two portions. A fourth spot is seen on October n. Only the two preceding spots (which are measured together) are left on October 11. 1883.,, '44 1-148 9-284 10-549 11 -1 12-167 3'4' 5 '4-548 '5-383 16-522 '7'397 O 21 ^.4 '4' 83 9' '39 62 67 '7 23 11 101 33 710 892 683 720 364 320 186 73 O '9 o 9 ll 46 i 9 81 4* 55 22 57 '5 87 202 4<>5 49' 370 44 Z 45 261 *3* 1 80 o 1*1-5 122-5 I22-9 i2*- 4 122-8 123-6 123-5 1247 I25-5 1257 126-9 o -17-8 -15-8 16-1 16-0 -i 6-* -16-1 -16-4 -15-9 -15-6 -15-9 -16-8 O -647 -50-4 -35-0 18-9 IO' + 3'5 + 2O-O + 36-2 + 48-0 + 6 3 -3 4-76-0 1883. Oct. 9-284 10-549 11-173 12-167 '4 3 22 10 1I 9 9 8 '*4 21 10 2 I 1 5 75 53 65 1 1 o 121-2 1*1-5 121-5 I*3-O o f'7'8 + I7-2 + '7'5 + 16-9 -367 19-8 - 5 + *-9 Means ... ... 7 5' 121-80 + '7'3S ... Group 1 140. A regular spot MlMII.- ... ... 44 '64 123-82 16-24 Oct. 9-284 10-549 11-173 12-167 '3'4'5 14-548 '5-383 16-522 17-397 18-397 5 *9 '3 12 2 9 *3 33 >7 5 2 3* 48 78 122 1 08 9 J f 61 9 '5 10 *9 u 8 16 12 '7 9 3 i 66 6 64 so 59 49 49 33 ii 10 80-5 80-6 80-4 81-0 82-2 81-1 81-2 81-0 -10 81-2 + '5'i + 15-* + '5"3 + 15-6 + 16-1 + 16-5 + 16-0 + 16-0 + '5'9 + '5'9 -77'4 60-7 -52-6 -39-1 -21-3 - 7'4 + 37 + 18-6 + 30-1 H-43'4 Group 1137. A regular spot with a small spot closely following it on October 8 anil 9. An- \.rv small spot follow!) it on October iz. The principal spot slowly .in uii-ii.-- in -in- as it approaches the went HiiiU. Oct. 7- '44 8-148 9-284 10-549 ii 12-167 '3'4'5 '4-548 '5-3S3 16-522 8 ii 26 '3 to 11 o o o 90 >*5 "4 79 108 99 95 37 4' 8 18 '7 12 16 7 n 6 200 '4* 88 fi 53 5' 22 *7 7 I I 1-2 ni-4 ii 1-6 111-9 I 12-0 1117 1 12-1 III 9 I 12-1 I I2-O -13-1 -13-1 -12-9 -12-7 -i*-8 12-6 -75-0 -61-5 -46-3 -29-4 2I-O - 8-4 + 8-6 + *3'4 + 34'6 + 49' 6 Means ... * 12 47 81-02 + 15-76 ... -12-7 13-0 -1*7 -1*7 Group 1 141. Two small spots. Only the preceding spot is teen on October 13. Mi-ans ... ... 9 70 111-79 12-83 Oct. 11-173 12-167 '3'4'5 '4 7 2 3* 3* '7 11 8 8 *5 38 54 178-3 181-2 182-1 -17-8 18-1 +45-3 +it*l + 78-6 Group 1138. Two small spots on October 8. The group increases in size rapidly on the following dav, ilie preceding s|t Woniing a very large and irregular spot. It is . .>d by an irregular stream of spots, i-orae of them large, and spread oTt-r an :\- i i. I'nt of the large spot becomes detached aiid is me.i separately on October 17, whilst th>- -Miall.-r spots are nira-urt-d with the main Ihxly of the larp 18-9 Means ... 9 39 180-53 18-27 Group 1 142. A mimlier of small spots on October 1 1, which have greatly increased in size before October 11, and on the following days tend to coalesce into two clusters, finally farming two regular sp..i- <>u O. lober 16. The preceding spot has paurd the west limb before October 17. 1 148 9-284 10-549 11-173 12-167 '3'4'5 '4-548 I5-383 16-522 1 '7'397 '9 5* ' 9 ! 158 183 34' 447 359 *44 7<> 64 35' 832 987 1270 1876 '534 12OI '34 567 16 3* 102 So 9* 184 283 *7' *75 '5' 5' 219 440 506 644 1014 97* 1670 1466 1071 121-2 1*1-3 123-0 isrj 123-5 ,25-7 126-1 126-5 126-1 126-3 + 12-6 + 12-6 + I2'2 + 12-2 + '2-3 + 11-3 -rii'3 + '0-9 + 11-4 + 10-9 -5'7 -36-6 -18-3 - 97 + 3'4 + 22-2 + 37'6 + 49' + 63-7 + 75'4 Oct. 11-173 12-167 '3'4'5 14548 '5-383 16-522 '7'397 O 4* 87 "7 99 28 3 21 37' 409 484 477 280 54 22 5' 89 85 39 57 1 1 196 238 338 4'4 409 '33 128 9 130-0 130-2 130-0 130-4 1309 128-0 - 9' - 8-9 - 9'4 - 9'S - 9'4 - 97 lO'O - 4'' + 9'9 + 267 + 4''5 +-5Z-9 + 68-5 + 77'' 1 Means * '49 805 124-30 + "77 Means ... ... 49 248 12977 - 9'44 198 AREAS AND HELIOGRAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Group 1143. Two very smalllspots. Group 1 146. A cluster of small spots. 1883. d Oct. 12-167 O 5 6 o 183-7 o + '4'4 o +63-6 1883. Oct. 15-383 16-522 17-397 18-397 19-311 20-473 21-477 33 2 5 38 46 25 3' 16 122 246 286 , 7 6 217 I 12 , 3 6 18 '3 20 25 16 26 20 66 127 148 96 '37 9 1 167 o 58-8 57'3 57-6 57'5 60-5 61-1 62-0 o - 6-4 - 7' 1 - 7'i - 6-6 o -18-7 - 5"' + 6-7 + 197 + 34-8 + 50-7 + 64-8 Means ... ... 6 '837 + 14-4 Group 1144. A very large and fine spot. The spot is measured in three parts on October 13, and in two parts on October 15. A regular spot is separated from it by October 15, and some very small spots are seen from time to time in its immediate neighbourhood. 6-6 - 6-6 - 6-5 Means 20 "9 59-26 6-70 Group 1147. A small spot, which is replaced by another small spot on October 18. Oct. 12-167 3'4'5 14-548 '5'383 16-522 17-397 I8-397 19-311 20-473 21-477 22-487 23-161 24-294 32 2OO 273 349 292 276 325 334 302 277 222 '44 76 "9 1071 1770 1917 1844 '974 2370 2338 2'53 H50 1024 7'5 367 172 287 246 250 171 148 169 176 '74 187 188 158 172 636 1700 1592 1364 1080 1066 1231 1237 1240 969 869 776 808 36-6 33-8 34-' 34-0 35-3 35-5 35' 2 35'3 35'3 357 36-0 36-1 35-8 IO'2 - 8-9 - 8-8 IO'O - 9-8 IO'2 - 9'9 Qj.r * 5 -697 -54'4 -43'5 -27-I -I5- 4 - 2-6 + 9' 6 + 24-9 + 38-5 + 52-2 + 61-1 + 75-8 Oct. 14-144 i5'383 16-522 I7-397 '8-397 10 21 2 O O 5' 73 3 25 17 18 '9 2 O O 9 2 68 20 '5 9 '9-3 19-6 19-4 19-8 22-6 + I2-I + II'9 + 12-0 + I2-I + I2- S -74-5 -57'9 -43-0 -31-1 -15-2 lO'I - 9-9 Means 8 4i 2O'I4 + I2'I2 ... - 97 - 9'9 lO'I Group 1 148. Two small spots. They are measured together on October 17. Means ... 19* II2I 35-28 - 978 ... Oct. I7-397 18-397 o 4 '7 26 o 2 10 '4 24-I 23-5 + 20-9 + 20-6 -26-8 -I4-3 Group 1145. A small spot. Two other small spots are seen near it on October 14. Means ... I 12 23-80 +20-75 ... Group 1149. A number of small spots. The group undergoes many changes, rapidly increasing in size after passing the central meridian on October 24. Oct. 13-415 14-144 4 '7 108 o 3 18 74 167-0 172-9 + 5-6 + 3'5 + 63-5 + 79-1 Means ... 2 46 169-95 + 4'55 ... Oct. 20-473 21-477 22-487 23-161 24-294 25-432 26-311 27-536 28-575 29-586 30-304 37 53 4 33 76 58 57 105 97 o 8 I 9 269 259 '74 345 719 672 851 744 177 87 3' 35 23 18 40 32 34 87 "7 30 7 2 '75 '45 94 1 80 404 f 9 699 887 410 3'6 320-6 3 2I "4 321-4 321-0 323-0 325-2 325-8 326-9 327-1 326-3 321-6 io'6 -49-8 Group 1 145*. A regular spot. -10-5 I J-2 -II-5 -ji-6 I2-I -II- 9 -II- 9 12-0 -12-6 -35-8 -22-4 14-0 + 3-o + 20'2 + 32-4 + 497 + 63-5 + 76-2 + 80-8 Oct. 14-144 50 141 27 76 167-8 -13-3 + 74-0 Means ... ... 27 76 1167-8 -13-3 Means ... 4' 346 323-66 -11-54 ... TAKBN AT (iUKKNWICII, IN I.Nl'lA, AM' IN .MAIIUTII S, IN TIIK YKAK.S 1882 TO 1885. Date. Greenwich Civil . Projected Area of UK! lloliographic Positions of Groups of Sun Spots continued. Ana for (iroup. M..,,. itudc of Group. HIM Latitude of Group. I/niptudi from Central Meridian. Date. Greenwich Civil Time. Projected Area of Area for Qroup. M. a Lonnitii'li ! 7 4 5 o 200 '43 '43 118 104 43 18 3 '9 II 1 1 12 IO 3 4 o 112 73 z 60 2 2 IP 4 o *S3'9 *54'5 254-9 255-0 255-2 255-1 2S4-9 255-0 - 6-0 - 6-1 - 6-2 - 6-2 - 6-4 - 6-6 ~.' 5 - 6'S -2J-J - 9-1 + 4-8 + I4' + 27-5 + 40-5 + 53-5 + 65-2 1883.,, - 21-477 22-487 *3 4* 140 250 '3 9 ll 170 o 25-0 *5'S o o -r-iS'i +27-8 -r-iS-o +41-7 1083. j Oct. 27-536 **'57S 29-586 30-304 Means ... 21 126 25-25 + 18-05 31-297 Nov. 1-287 2-289 3 - i63 Group 1151. Two very small spot*. Means ii 86 254-33 - 6-43 Oct. 2 1 -477 o 12 O 6 356-3 + 137 - '9 Group 1 1 55. Three small ipots, the first two of which are close together, and are, therefore, measured as one. The following spot disappears before October 30, and the preceding spots break up and form a compact cluster of small spots, of uliic h only two remain on November i. Mvans ... o 6 35 6 '3 + >37 ... Group 1 152. A regular spot with two or three small faint spots near it Oct. 25-432 26-311 27-536 28-575 29-586 3'34 31-297 Nov. 1-287 2-289 3-163 18 18 *9 26 4 18 10 6 i 2 87 '95 266 206 85 T 60 22 22 5 27 '9 20 '5 21 9 ! 2 127 '95 184 "9 45 47 3> 12 '4 4 236-0 *347 235-1 2353 236-2 237-1 237-4 237-5 237-8 238-1 - 7'4 - 7-6 - 7'' - 7'4 - 7-' - 6-9 - 6-8 - 6-8 - 6-9 - 7'0 69-0 -587 -42-1 -28-3 -13-9 - 37 + 97 + 22-9 + 36-4 + 48-3 Oct. 21-477 22-487 23-161 24-294 *5'432 26-31 ' 27-536 18-575 29-586 30-304 16 16 30 12 16 IO *3 16 7 i 95 '59 176 140 192 '59 ii i 66 11 3' '7 *5 9 5 12 9 4 i 178 165 148 9 106 82 57 35 22 1 I 281-9 282-0 281-7 281-4 2817 281-4 2817 282-4 282-0 282-3 + '4'3 + '4-7 + '47 + '4'9 + 147 + '4'9 + 15-1 + '4'9 + 15-0 + 15-0 -75'3 -61-8 -53'3 -38-6 -*3'3 I2'O + 4-5 + 18-8 + 3''9 + 4.I-; Means ... 12 7 236-52 - 7-10 ... Group 1 156. A large regular spot, followed by a smaller one. On October 19 and following days some very small faint spots follow the group. The two principal spots extend toward each other, and are measured together on October 30 ; on November i they coalesce. On the same day, the larger and preceding spot, which from October 15 has gradually bren opening from the southern side, ii finally divided into two jwrtions, and the preceding portion breaks up into a iiuinlxT of small spots. On the following days the group consists mainly of two cluster* of small spots, both of which, oat especially the following cluster, diminish rapidly in size. Mi-anfl ... 12 8 9 281-85 + 14-82 ... Group 1153. ill spot, which is not seen on October 14. A second is seen near it on October 15. 23 161 H'294 25-432 26-31 1 o o 3 o 8 16 1 1 O 3 4 o 1 1 1 1 356-8 35i-9 356-o + 13-8 + '3-8 + 14-0 + 21'8 + 46-9 + 62-6 Oct. 25-432 26432 27-536 28-575 29-586 30-304 31-297 Xov. 1-287 2-289 3-163 4-207 S'397 4 3' 77 '45 *4 162 209 105 48 43 '4 o 49 3'5 614 866 1146 1107 1115 1079 466 261 109 29 16 5 69 100 107 86 no 55 27 28 o 187 594 664 60 1 578 5 4 261 167 90 44 223-3 222-4 222-1 222-4 222-7 223*0 223-9 224-9 224-5 225-9 227-0 23-3 - 9-1 - 9'4 - 9'3 - 99 ~S1 -817 -71 o 55-1 M-.-ans ... 1 7 354-90 +13-87 -41 2 -27-4 Group 1 1 54. A regular spot. Occasionally small faint spots are seen close to it. 90 IO'2 10-6 -10-4 - 9'9 _ 9-9 - 9-6 I7 - 3'8 + 10-3 fii'l + 36-1 4-50-9 +69-9 Oct. 23-161 24-294 25'+32 26-311 6 8 26 '5 5 "4 209 '45 23 1 1 21 IO '79 '53 '73 97 253-5 253-0 253-7 *53'3 - 6-5 - 6-8 - 6-6 - 6-7 .-8,. S 67-0 > ' 3 -40-1 Means ... ... 55 4* 224-37 9-82 200 AREAS AND HELIOGRAPHIC POSITIONS OF GROUPS OF Sux SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Group 1 157. A small spot. Group 1161. Three regular spots. Several small spots are seen near the middle spot on October 30 and 31. The two following spots break up and diminish in size on the following days, and disappear, the last spot before November 4, the middle spot before November 5, leaving the preceding spot alone. 1883. A Oct. 27-536 28-575 3 2 12 '9 2 I 7 '5 o 3"'9 312-2 o - 7'4 - 7-8 o + 347 + 48-6 1883. Oct. 28-575 29-586 30-304 Jf97 Nov. 1-287 2-289 3-163 4-207 5'397 6-296 7-159 8-161 4 27 61 86 83 89 105 68 8" 35 22 '3 34 363 428 581 619 5U 446 375 312 254 199 126 12 * 9 62 60 49 46 53 35 49 23 18 16 95 513 428 420 367 267 225 192 177 164 59 146 o 183-6 180-6 180-7 181-4 182-3 184-1 185-2 187-0 187-5 188-0 188-4 188-3 o + 2-6 + 3'9 + 4' + 3'9 + 3-8 + 3'3 + 3'2 + 2-7 + 2-4 + 2-5 + 2-4 + 3'' o 80-0 -69-5 Means ... 2 1 1 312-05 7-60 ... Group 1158. Three very small spots on October 28. The group rapidly increases in size on the following days, and on October 30 consists of a large regular spot, with a somewhat scattered cluster of small spots at a little distance. These small spots tend to coalesce after passing the central meridian on October 31, and at the same time diminish in size. -4 6 '3 -32-3 -i7'3 - 4-6 + 10-9 + 27-1 + 39'4 + 5'-3 + 64-4 Oct. 28-575 29-586 30-304 31-297 Nov. 1-287 2-289 3-163 4-207 5'397 6-296 74 100 85 49 26 28 22 3 18 152 5H 535 397 37 253 150 4 26 40 54 44 27 '5 '9 20 8 12 84 279 28l 217 22O I 73 132 65 74 230-3 230-5 231-2 230-6 230-2 229-5 229-5 229-7 229-3 229-2 + 22-3 + 21-6 + 22-2 + 22-5 + 22-5 + 22'2 + 22-5 + 22-3 + 22-8 + 22'4 -33'3 19-6 9-6 Means ... 38 263 184-76 + 3-iS ... + 2-9 + 15-6 + 28-1 + 39'7 + 53-6 + 68-9 + 80-6 Group 1 162. A scattered group composed of very small spots. Oct. 29-586 30-304 31-297 8 10 2 58 46 14 6 i 35 28 9 258-6 257-6 256-0 -28-2 -28-1 + 8-5 + 16-8 + 28-3 Means 23 '54 230-00 -1-22-33 Group 1159. A small spot. 20 3 Means 4 2 4 257-40 -28-20 Group 1 163. An irregular and very scattered group of small spots. The group undergoes constant change during the period of its visibility. Oct. 28-575 4 23 4 20 210-9 -12-7 -52-7 Means ... 4 20 210-9 -12-7 Group 1 1 60. A cluster of small spots. Oct. 30-304 Ji'*97 Nov. 1-287 2-289 3-163 4-207 5-397 6-296 7-159 8-161 8 37 40 27 36 36 4 2 4 20 O '3 168 162 144 285 3'5 380 265 323 '9 5 22 21 '4 Z 34 47 39 o 8 97 87 75 .56 196 305 302 639 117 203-8 200-4 2OO'9 204-4 207-1 209-6 209-9 211-3 211-5 208-3 -11-4 -n'3 -u-8 -ii-6 10-8 io'6 io"9 -10-4 10-7 -13-1 -3/-0 -27-3 -137 + 3' + I7-3 + 33'5 +49'5 + 627 + 74'4 + 84-4 Oct. 28-575 29-586 30-304 31-297 Nov. 1-287 o o 6 '4 28 48 81 55 24 4 8 o 4 4 2 59 33 '3 193-6 193-6 194-0 195-2 196-0 + 14-2 +13-5 -t-i3' + 13-1 + 12-9 70-0 -56-5 -46-8 -32-5 -18-6 Means ... ... 2 37 194-48 + 13-34 Means 22 198 206-72 11-26 ... TAKKN AT (JRKKN WIi'll. IN IMHA, AND IN .M Allcl Tlf-. IN I UK VKAK8 1882 TO 1885. 201 \M'.IS and llcli(H_'r.i|>liii- Positions "i" (Jrou-is .if Sim Spots contin Dt. Greenwich Civil Tim*. Area of Area Umbra. r.>r '! \i .in Longitude of Group. Km latitude of Group. Longitude from Central Meridian. Greenwii li Civil Tin,, . 1'rojectod Area of Area for Group. M Longitude of (iroup. Latitude of Group. . from Central Meridian. ITmbr*. Umbra, Whole S|..,t. Umbra, Whole Spot. (Jroiiji l 164. A small xpot. i|i 1 l6X. A regular spot. It diminishea in size on November 3 and (h* following day*. -.1-.I ' 31-297 Nov. 1-287 2-289 4-207 S'397 O 7 6 8 6 o '5 27 12 ll '3 *9 O 6 4 5 3 '9 *3 8 1 1 7 4 160-5 160-5 160-8 161-1 161-5 162-1 o + io-6 4-10-4 + 10-2 H-10'3 + IO-4 + 0'3 o -67-2 -54"' 40-6 -287 H-fi 1883. Nov. 2-2*9 3-163 4-207 5-397 6-296 8 8 8 2 54 75 73 57 22 '5 ! ?s fi .2 o 130-0 131-5 131-7 132-5 132-6 u -16-8 -16-8 -16-8 -165 -16-6 -71-4 -58-3 -44 '4 -27-9 16-0 + i-7 MfitllB 8 55 131-66 16-70 01 3 14 161-08 + 10-37 Group 1 169. A arge regular spot. Group 1 165. ill spot. A second >|>ut is en near it mi November a and 3, and anotlirr i- wen on Noreml Nv. 2-289 3-163 4-207 t"l 6-296 7'59 8-161 9-518 10-541 1 1 12-520 13-507 O 22 3* 70 56 6 9 57 60 66 No pho 35 38 4" ' 2 5 223 322 328 35* H J 336 322 tograiih. 176 '43 .38 33 i? 4' 3* 34 4' (36 3' 48 219 212 13 i 246 210 207 95 192 '99 '77 ,56 184 119-1 120-5 119-9 119-9 119-2 118-8 118-7 118-3 117-8 117-4 1 16-9 1166 -23-4 -82-3 -69-3 -56-2 -40-5 -29-4 -18-3 - s- + 12-2 + 15'* + 37-8) + 5'4 + 63-1 .-. 1-287 2-289 3-163 4-207 S'397 6-296 7-'59 8-161 9-5.8 o 6 8 6 o 5 o o 4 1 1 34 22 \l II 21 4 *7 o 40 10 ss 7 4 9 10 3 6 O I I O 2 ' '5 133-0 130-6 132-4 134-0 '34'3 134-2 134-1 132-3 131-8 I 1-0 -10-4 -10-4 I 1-0 -117 -11-4 _ 9 -8 10-6 - 8-9 -SjjS 70-8 -57'4 -42-1 -26-1 -14-4 - 3' + 8-4 + *5'7 -3 3 -23-2 -23-8 -*3'3 -23-0 -23-2 -22-8 -23-2 -*3'3 -*3'3 -23-8 M.-ans 3 '9 132-97 Means 35 202 "8-59 -23-30 ... Group 1 1 66. Three spot* of considerable size with several very small spots near. The larger spot break* up into a number of fragments, and the entire group diminishes rapidly in size on November 3 and the following days. The group covers a wide iren, th>- individual spots being somewhat scattered. Group . i 70. A number of small spots irregularly arranged. Only two sjiots remain n November 7, only one on November. 8 \ IT. 1-287 2-289 3" |6 3 4-207 5-397 6-296 7''59 8-161 9-5.8 10-54. 9 28 5* 53 94 9* 28 20 '- 2 112 307 44* 45 508 384 205 '3* 161 56 33 4* 5 37 54 49 '5 1 1 10 i 4*9 464 433 289 '94 200 104 6; 9* 3 131-4 130*2 130-5 131-0 1 3 1 -x 132-7 '33'* i u-8 135-1 135-0 + 10-4 + 10-2 + 10-8 4-10-6 + 11-0 + IIM + 11-2 + 11 2 + 10-3 + 9'9 -83-1 -71-2 -59-3 -45-1 -28-6 Nov. 4-207 5-397 6-296 7''59 8-161 59 35 7 9 3 56 '3 54 45 ii 3* 22 M 9 4 84 7* 40 4"4 28 194-9 '95'5 196-0 196-3 '95 + + '4'5 + H-' + 4-4 + '4'4 + ; + 18-8 + 35"' + 47'4 459-2 + 7'-5 15-9 - 3'9 + 8-9 + 29-0 +4*'4 Means ... 16 54 195-62 + i4'> Group 1171. Two very small spots on November 6, one of which dmppe* before NoTember 7. ..,up suddenly develM S ,,i*r 8 int.. two .-luster* of mall spoU, one of whii-h disappears before Novenil-r 9. Means 30 241 >3*"37 + 10-67 Group 1 167. A small spot. Nov. 6-296 "'59 2 5 7 7 7 76 29 z 5 o ; 3 4' 3 '4 101-5 103-1 102-9 103-9 + 6-7 + 77 + 8-1 + 9'' - 4-> -34-0 Nov. 2-289 O IO o 5 206-5 + 7'* + 5-"' 8-161 9-518 2 I'O - 2'2 1 Means o 5 ' *6"5 + 7'* Means 2 .6 102-85 + 7-90 l>.,..,.. 11 i. . .... i, , ..ui UI-IIT^ IKS-) Iftai * ^ 202 AREAS AND HELIOGRAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Moan Latitude of Group. Longitude from Central Meridian. Date. Greenwich Civil Time. Projected Area of Area for Group. ilean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Umbra. Whole Umhra _ Spot. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Group 1172. Two regular spots. A number of small spots are seen between them November 9-14, and on November 16. Group 1175. Two small spots. 1883., Nov. 13-507 o 62 O 55 o io8'o o + 18-7 + 54'5 i88 3 . d Nov. 9'5i8 10-541 1 1 12-520 I3-507 I4-552 15-561 16-151 17-504 18-204 19-491 20-414 16 '59 No pho 224 227 207 223 120 85 4 2 24 o 162 663 tograph. IO22 1301 I IOO 1099 872 546 395 187 38 18 117 (121 125 120 I I I 126 73 68 39 4 2 '59 488 528 567 692 587 622 5" 426 37* 343 36 48-9 48-6 48-5 48-3 48-1 47-2 47-6 47-6 48-1 47'4 477 43'5 o o ?7'2 -14-7 -14-7 -44-0 - 3 I-I) -18-2 - 5-4 + 7-5 + 21-2 + 29-0 +47^ + 55-8 + 73'i + 81-1 Means 55 108-0 + 18-7 -14-7 -15-0 -15-1 -14-8 -14-9 -14-5 14-6 -15-0 -16-5 Group 1 176. A number of small spots, measured in two clusters on November 14. On November 15, 16, and 17, the group consists of two large regular spots with a few small spots between them. These small spots are measured with the large spots on November 15 and 17. The following spot has broken up into a number of small spots on November 18. Means 80 454 47-63 -14-89 Nov. 13-507 14-552 15-561 16-151 17-504 18-204 3 16 109 70 57 23 31 1 60 907 784 399 230 2 9 6 46 55 3i 16 84 534 5>i 380 3n 56-5 56-8 57'3 5 8-2 58-9 59'9 + IO'I + 9'9 + 9'3 + 9'2 + 9'3 + 87 + 3- + 17-1 + 30 4 9 + 39- 6 + 58-1 + 68-3 Group 1173. A large regular spot, followed on November 12 and succeeding days by another but smaller regular spot. The latter is again followed on and after November 14 by an irregular chain of small spots, which undergo frequent changes in number, shape, and area. On November 16, 17, and 18, a large portion of the principal spot separates from it, breaks up, and moves forward. Small spots are also seen between the two principal spots of the group on November 1 3 and 14. Means 35 306 57- 9 3 + 9-42 Group 1177. A regular spot. Several small spots are seen near it on November 16, 18, 19, 20, and 23. Nov. 9-518 10-541 I I 12-520 i3 - 57 '4-552 15-561 16-151 17-504 18-204 19-491 20-414 21-414 60 144 No pho 2O I 259 325 447 313 424 2 55 209 130 o 443 705 tograph. 1096 1378 1976 2096 2229 2064 1777 1279 664 5 85 '3' (126 120 140 168 231 167 265 185 219 232 632 646 648 649 742 1020 1083 1 1 86 1294 1286 '354 1157 179 37'5 36-8 36-6 36-4 357 33'5 33-8 34'6 35'9 36-6 357 35'i 30-8 - 8-9 - 9"i - 9-0 - 8-9 - 8-6 - 8-4 - 8-6 - 8-8 - 8-6 - 87 - 9'3 - 9" 1 - 8-8 -68-6 -55-8 -43-o) -30-1 -17-8 - 6-2 + 7-4 4-16-0 + 35-I + 45' + 61-1 + 72-7 + 81-6 Nov. 13-507 14-552 15-561 16-151 17-504 18-204 19-491 20-414 21-414 22-437 23-494 24-422 25-193 47 118 74 128 I IO '49 i55 151 121 6 9 48 13 60 286 580 447 686 722 747 849 729 641 444 300 165 64 'I 56 76 61 77 82 85 78 57 54 22 232 389 5'4 337 407 39 6 386 45 1 411 4'3 364 335 283 33>7 33*7 33^9 33 2 '2 332-9 3327 332-9 332-6 332-1 332-3 332-5 33'-8 331-6 -13-6 -13-5 -13-6 -13-6 -13-6 -I3-4 -13-8 -13-8 -13-8 -13-8 -13-8 -81-8 67-0 -53'5 -46-4 -27-9 18-9 - 17 + IO - 2 + 22'9 + 36-5 + 507 + 6z-2 + 72-2 Means '59 9'4 35-31 - 8-83 Group 1 174. A number of small spots, irregularly arranged. The group undergoes constant changes. -14-0 -14-0 Means 63 378 332-38 -13-72 ... Nov. 10-541 1 1 12-^20 i3-57 14-552 15-561 16-151 '4 No pho 65 '9 4 o o 86 tograph. 150 118 59 20 27 8 (20 33 1 1 2 O O 5 63 76 62 35 '3 2 I 64-1 65-4 66-7 67-3 68-7 67-4 68-3 + 13-6 + 12-6 + 11-5 + 10-9 + 11-3 + 11-6 + 12'O -28-5 -14-2) + 0-2 + I3-8 + 29-0 + 41-0 +497 Group 1178. A small faint spot. Nov. 16-151 o 9 O 21 96-8 + 18-9 + 7 8-2 Means I 1 46 66-84 + n'93 Means o 21 96-8 + 18-9 ... TAKKS AT CKKKNWICH, IN ISI-IA, AND is MAURITIUS, IN THE YKARS 1882 TO 1885. 203 AMM aiul llfliivjr.-ijihic Positions of Groups of Sun Spots continued. Graeunii-h 1 run,'. Projected Area of Area for Group. M. m Longitude of Group. Mean Latitude of Group Loll: from Central Meridian. Date. Greenwich rime. 1'rojeoted Area of An a for Group. Longitude of Group. 41 Mil Latitude of Group L"ngitud> from Central Meridian. I'mbra, Whole Umbra. Whole Spot. i n, Whole S|K)I. Umbra. Whlr S)K,t. Group 1 179. A Miim-wiiat scattered group composed of several very small spota. (irOllp 1 iSl rtlllli: 1883.,, Nov. 21-414 22-437 23>94 12 7 4 122 3 S 7 3 2 72 16 7 o 276-9 *79'3 279-2 O + 3-6 + 4'o + 4'* -32-3 -16-5 - 2-6 I88 3 .,, . . I 6 i ; i 17-504 18-204 8 1 1 1 62 7* 6 '5 48 96 57 66-4 67-8 66-5 c -10-5 -10-4 + 47-8 + 67-0 - 9-6 + 74-9 Means ... 10 79 277-85 + 3'97 Mean* 7 67 66-90 10-17 Group 1 183. Two small spots. Th following spot disappears before November 10. Group 1 1 So. of small .s|K>ts irregularly arranged on November 16. The group in- i thf following 3 6 16 6 63 4* 37 37 2 9 62 49 '4 16 9 9 7 3 9 4 95 40 26 22 48 3* 26 8 253-0 252-5 *53'3 253-1 252-7 252-9 253-1 253-6 -124 -11-9 11-6 -69-4 -56-7 -42-5 -28-7 16-9 Means 34 363 ''33 I2-O3 1 1-9 -13-2 Group 1181. Two or three small spots on November 16. The group increases in size very rapidly on the three following days, and forms a large but at the same time i-ompart group, composed of many spots, some of them l.irge. The spots begin to break op after passing tin- central meridian on November 19. 12'6 12-2 -12-3 - 6- S + 11-5 + 24-0 Means ... 7 37 *53'03 I2-26 Group 1 185. Several small spots close together. Nov. 16-151 1--J04 18-204 19-491 10-414 11-414 22-437 23-494 24-422 1 25 193 89 87 220 180 '55 126 87 64 21 75 7: 871 '355 '393 1249 840 781 859 5*3 54 49 114 96 87 81 60 77 39 60 4*9 488 703 737 701 54 643 980 960 328-8 329-4 319-8 33'-2 33''3 33>'4 332-2 332-9 333'Q 333> + 17-8 + '7'5 + 17-6 + 18-1 + 18-0 4-18-0 -H7-7 4-17-6 + 17-6 + 177 -49-8 zi-8 - 3'4 -r 8-9 + 22-2 +36-4 4-5--I +63-4 +74-o Nov. 21-414 "'437 23-494 24-422 o 4 33 55 148 9 o 3 o 48 49 IOO 53 241-2 242-4 *43'5 *437 17-5 68-0 -<7'3 : -53'4 -17-5 -38-3 -17-2 -25-9 Means ' 63 242-70 -17-38 Group 1 1 86. ra ill which several smnll faint spots appear and disappear at One spot is seen "i> November n, four on November 13, two on 24, three on November 15. 1 Means ... 66 624 33'34 + 17-76 Group 1182. A regular snot with sonic very small faint spots following at some distance, 'i latter disappear befo: N . ai. A disturbed ar intervals. Novembei Nov. 22-43- *3-494 24-422 25-193 O '7 O o 7 104 66 35 o 9 3 83 o 42 o 20 231-5 4-15-0 232-0 4-156 232-9 4-' ;i 4-16-1 -64-3 - 49 -8 -36-7 -*5*S Nov. 1^204 19-491 20-414 9 '9 H 64 '49 162 '5 17 '7 123 2767 139 276-8 114 278-2 + 4'' + 39 + 4-o -74'9 -57-8 -44-2 MIMUS 3 39 231-63 4- > 5-50 204 AREAS AND HELIORRAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Date. Greenwich Civil Time. Projected Area of Area for Group. .Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Group 1187. A regular spot. Group 1 1 90 continued. 1883. Nov. 29-441 30-259 16 o 34 '4 10 20 7 171-6 171-5 o - 7-8 - 8-0 -31-6 21'2 1883. d Nov. 22-437 2 3 '494 24/422 25'i93 26-548 27-452 28-453 29-441 30-259 Dec. i 2-224 47 57 49 47 75 54 4 1 28 18 No pho 5 339 366 379 426 414 376 2 99 '95 '23 tograph. 22 70 52 35 29 40 27 21 >5 1 1 (8 5 5 02 333 268 263 220 '93 '55 108 76 5 *4 o 226-2 226-1 225-7 225-4 225-9 225-7 225-8 226-0 225-8 227-0 228-2 10-4 o -69-6 -557 -43-9 -34' -'57 - 3'9 + 9-5 + 22-8 + 33'' + 47'3) + 61-4 10-4 10-6 10-8 10-9 10-9 i i-o I PO -"'3 -i 1-4 -11-5 Means ... ... 9 25 171-28 - 7-82 ... Group 1 191. A few faint spots irregularly arranged on November 27. The group rapidly increases in size on the following days, and on November 30 is composed of a large regular spot, followed by a train of many small spots. The small spots diminish in number and size on the following days, and have all disappeared before December 4. Means ... i 28 199 226-16 -10-93 ... Nov. 27-452 28-453 29-441 30-259 Dec. i 2-224 3 4'4 ! 3 31 58 128 No pho 66 No pho 2 9 25 84 340 779 tograph. 462 tograph. 142 o 16 29 68 (57 46 (48 5 '4 43 174 4'3 368 323 284 2 45 206-3 207-4 207-9 208-8 209-6 210-3 210-5 ZIO'7 + 9-2 + 9-3 + 97 + 9'9 + 9' 6 + 9'2 + 9'2 + 9-' -23'3 S-n Group 1 1 88. A regular spot. A small spot is near it on November 24, and another from November 26 to November 30. The latter is measured with the large spot on November 28 and 29. 8 9 + 47 + 16-1 + 29-8) + 43'5 + 58-2) + 72-9 Nov. 22-437 ^ 3 "494 24-422 25-193 26-548 27-452 28-453 29-441 30^59 Dec. i 2-224 3 4'4'3 18 63 58 47 76 70 59 46 3 No pho 26 No pho o 126 399 428 349 408 408 39 308 304 tograph. 186 tograph. 44 51 77 5 33 43 37 3 24 17 ('9 21 ( O 357 483 366 245 232 215 199 161 170 1 60 '49 139 128 216-5 217-1 216-4. 216-1 216-4 216-2 215-7 215-9 215-8 216-4 216-9 217-4 217-8 -10-5 -10-4 10-8 -79'3 -647 -53'2 Means 39 233 208 94 + 9'4 I l-l -10-7 i ro 10-6 io'6 10-4 1O-2 lO'O - 97 43 3 -25-2 -13-4 - 0-6 4-12-7 + 23-1 + 36-6) + 50-1 + 65-0) + 80-0 Group 1 192. A small spot. Nov. 29-441 o 30-259 o 12 10 o o 2 3 12 129-0 127-9 - 8-0 - 8-0 -74-2 -64-8 Means o 18 128-45 8-00 Means 32 231 216-51 -10-54 Group 1 193. A small spot. Group 1 1 89. Two small spots. Nov. 30-259 o 6 o 9 122-7 12-2 -70-0 Nov. 25-193 o H o 13 204-7 i o;8 54 7 Means 9 122-7 12-1 ... Means i '3 204-7 -10-8 Group 1 1 94. A small spot. Group 1 190. A small spot. Nov. 26-548 6 27-452 II 28-453 22 34 28 28 9 53 <7'6 ii 27 171-4 16 20 171-3 - 7'8 -. -71-0 F&"1 Dec. 2-224 4 10 5 1 1 108-8 -24-2 58-0 - 7'9 5 2 -45-0 Means ... 5 1 1 108-8 -24-2 ... TAKES AT GREKXWI. ii, IN INMA, AM> IN MAUKITU'S, is IHK YKAKS 1882 TO 1885. 205 is ami Hi'li;: of Group. Me '. Latitude of Group. Longitude from Central Meridian. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Umbra. Whole Spot. I'm!" i Whole Spot Umbra. Whole Spot Umbra. Whole Spot ; -. Means ... 31 197 34-49 - 97* Group 1 199. Two small spoU. The preceding spot disappears before December 9. Dec. 6465 7-576 8-255 9197 10-287 o 1 O 55 57 '9 '9 l? 3 3 o 59 40 11 1 1 9 49-1 52-0 49'5 49 - * 49-3 + 77 + 7'3 + 7-3 + 7-* + 6-8 -617 -44-1 -37-8 -'5T- i 1-1 Dec. 8-255 9-197 3 o Z 9 10 2 O '4 5 83-0 80-8 + 10-5 + 1 ro - 4'3 + 5-9 Means ... 1 10 81-90 + 1075 Means ... ... i 26 49"8i + 7'*6 ... Group 1 200. A regular spot. A number of small spots, which undergo frequent and rapid changes, appear near it on December 12 and the following days. The regular spot disappears before December 18. tir.iup 1 197. Two (mall spots. The K rou l' increases in sue as it approaches the central meridian, and on December 9 aim the Minn ing days it fnrms two com[>act cluster* of spots with a few smaller spots scatter>-3 460 209 164 '5* 46-2 45'* 444 Hi 45-5 457 46-2 46-5 48-0 +8-0 48-4 50-1 -12-9 -13-9 -14-0 -'37 -13-1 -11-9 -13-9 -13-1 -13-1 -12-8 -12-3 -12-5 -64-6 -51-0 -41-9 -30 i ;'S + 12-4 + 28-9 +40-4 + 55'9 + 697 + 81-7 -11-3 -ii 5 1 1-1 10-9 -107 - 8-6 - 8-6 - 8-1 - 78 - 8-2 >j -38-1 -18-5 -13-6 - 3'5 4-11-7 -(-16-1 + 36-0 + 49-6 + 62-7 4-739 Means ... 12 98 4-82 10-18 Means 27 226 46-5^ 13-18 Group 1201. Two small spots. Fresh spots appear, and on December it, when on the runtral meridian, the group is composed of a very great number of small spots. It diminishes rapidly after passing the central meridian. Group 1 198. A regular spot with some small attendant spot*. These latter have all disappeaied before December it. Dec. 9-197 i >6 10-187 6 70 11-538 58 233 12-314 '5 '93 '3-543 *S 83 14-299 i 34 i 4 3 8 '4 1 1 4' 122 99 43 '9 Ji'J 29-9 30-2 30-7 3 ro 31-8 + 11-1 + 10-8 + 10-6 + 10-3 + 10-4 + 10-8 -43-6 30-6 -13-9 - 3'' + '34 + 14-2 Dec. 6 465 7-576 8-155 9-197 10-187 11-538 '4 59 5 60 7' 95 93 *74 35' + 55 461 486 8 63 4* 4 4 48 200 290 Z 94 35 259 250 34-5 34-8 34-6 34-6 34-5 34-7 - 9-6 - 9'3 ~ 9-3 - 9-6 - 97 - 9'3 -76-3 -6, - 4 -5*7 -40-3 - 9'4 Means 10 56 30-82 4-10-68 206 AREAS AND HELIOGRAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. Date. Greenwich Civil Time. Projected Area of Art-a for Group. Mean Longitude of Group. Mean Latitude of Group. i Longitude from Central Meridian. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. il can Latitude of Group Longitude from Central Meridian. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Group 1202. A regular spot. Several small spots appear following it on December 12. These disappear before December 15, on which day several small spots are seen to the north of the principal spot. These last are measured with the principal spot on December 16. Group 1205. A regular spot. Smaller spots are seen near it on December 18, 20, and 22. 1883., Dec. 11-538 12-314 '3'543 H-299 ' 5 '475 16-498 17-283 18-284 19-280 20-307 21-493 22-268 23-184 22 19 22 41 44 34 42 . 24 2 4 24 17 6 87 116 161 180 230 198 231 204 181 204 58 85 25 37 21 17 27 2 5 18 23 '4 15 18 17 8 o 148 131 123 I 21 132 108 126 116 i'3 152 58 130 72 o 332-9 332-4 331-8 331-8 331-6 33I-3 331-4 33I-3 330-9 331-3 329-8 332-5 328-9 + 20-4 + 20-4 + 2O-O + '-'7 + 20-8 + 20-8 + 2I-I + 211 + 21'4 + 21-6 + 2I"2 + 22-8 + 21-2 o -71-2 61-4 -45-8 -35-8 -20-5 - 7'4 + 3- + 16-1 + 28-8 + 42-8 + 56-9 + 69-8 + 78-3 i88 3 . d Dec. 9- 1 97 10-287 11-538 12-314 I3-543 14-299 '5-475 16-498 17-283 18-284 19-280 20-307 H 29 125 80 93 74 52 64 60 39 18 9 62 213 445 450 586 4'3 34' 3*8 4i7 211 114 49 36 34 93 5' 5i 39 27 36 38 3i 20 20 ,56 252 333 287 320 215 177 184 264 1 66 127 105 o 356-6 356-3 3577 357'9 358-5 359-8 i'7 1-9 3'i 4'i 4'4 4-2 o + 12-2 + I2-I + I2- 7 + 12-5 + I2'3 + 12-3 + 12-6 + 13-3 + 13-2 + 12-8 + 12-2 + 12-3 o -78-3 64-2 -46-4 -35-9 -19-1 - 7-8 + 9'6 + 23-2 + 347 + 48-9 + 62-3 + 757 Means 18 118 331-38 +21-05 Means 4 216 0-52 + 12-54 Group 1206. A small faint spot. Several other small spots appear near it on December 15, and others on December 17. The group is measured together as a whole on December 15 and 16. Group 1203. A very small faint spot. Dec. 11-538 12-314 I3-543 14-299 I5+75 i 6-498 17-283 18-284 19-280 o 5 15 6 6 16 8 '5 24 38 39 29 26 3 86 78 47 o 5 12 4 4 o 9 5 10 40 43 3 19 H 16 44 4 2 28 3317 33i-i 330-6 330-7 33fi 33I-3 332-1 332-4 333-2 -16-3 -16-5 T .,-, -72-4 -62-7 Dec. 10-287 3 2 109-6 -2 5 -2 +49' 1 -16-6 -16-3 -16-2 -18-2 47-0 -36-9 2I-O - 7'4 + 37 + 17-2 + 31-1 Means O 2 109-6 -25-2 Group 1 204. Two spots, which are measured together on December 10 and n. On December 13 they have broken up into a line of small faint spots which are measured together, and of these only one remains on December 14. The group is not seen on December 15, but re-appears as a small faint spot on December 16. Several other small spots appear on December 17, and form an irregular scattered group. 17 9 -17-7 Means ... 5 3i 331-58 -16-96 Group 1207. Two small spots. + 8-7 + 62-3 Dec. I3-543 33 36 79-9 Dec. 10-287 11-538 12-314 I3-543 14-299 i5'475 16-498 17-283 18-284 19-280 20-307 21-493 5 32 16 o o o o 7 8 23 25 o ' 6 l 156 77 '13 24 o 20 43 4 2 104 76 40 1 1 3 12 O o 4 5 17 24 I 39 H9 59 69 '3 10 23 2 1 76 76 62 345 '4 347"i 346-8 346-6 346-9 344-5 346-0 346-1 347"3 347-5 34 Z '9 + '5'3 + I5-3 + I5-3 + I4-9 + '4'3 + 13-8 + 11-5 + 10-4 + I2-I + II-2 + I3-0 -75-i C7 'O Means o 36 79'9 + 87 b/ u -47-0 3 i'o 20-7 + "5-8 + 17-6 + 30-9 + 45' 2 + 59-0 + 70-0 Group 1208. A small spot followed at a little distance by a small cluster of faint spots. This cluster disappears before December 17. Dec. 14-299 | i 15+75 6 16-498 23 17-283 ' 6 15 IOO 90 22 o 3 13 8 5 6 56 16 8-3 I I'O 11-5 14-0 + 16-0 + 16-4 + 16-3 + 16-9 + 07 + 18-9 + 3 2 '8 + 45-6 Means 9 58 346-10 + I3-37 Means 5 34 1 1 -20 + 16-40 1AKKN AT CrKEKMVIi II, IS Isi'lA, ASH IN M.U;KITIl> IN IIIK YlCARS 1882 TO 1885. 807 ATI-US and Hulii>gru]iliir rositions of Groups of Sun Spots continued. Greenwich ('nil Time. Fro.! Am Group. Mean :ru.li- nf Croup. KHI Latitude "Up. Longitude C.ntral Meridian. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean of Group. M.-.H Utitude of (in HI p. longitude from Central Meridian. I'lir : t Wlinl.- S|t. fn,l,,,. Wh ' >,...( Umbra. Whole Spot. Umbra. Whole Spot. Group 1209. A small faint -; Group 1113. A tegular spot. It gradually diminishes in size from day to day, and breaks up into small spots on December 27. Occasionally a very faint spot is seen in the neighbourhood of the principal npot. 1883.,, Dec. 14-299 o "V475 o 4 O 2 4 o 345'' 345' 6 o -"4 10-6 -21-5 - 6-5 '883.4 Dec. 19-280 20-307 21-493 22-168 23-184 24-290 25-224 26-187 27-207 28-167 6 10 39 46 83 69 28 39 *7 n 95 in 3'9 386 4>2 4'4 329 *75 130 3* 24 18 34 33 5 37 '4 10 '5 7 364 303 277 *77 248 in 168 '43 7* 20 119-3 219-0 lli'j 217-8 218-1 218-5 219-1 119-5 119-6 119-5 -11-7 -'37 -'3'4 ~'3'3 -129 -12-8 -12-8 -12-8 -127 -12-5 o -81-8 -69-5 -54-4 -44-9 -32-5 -'7'5 - 47 + 8'4 -T-22'O 4-34-5 Means O 3 345-35 1 I -00 Group 121*. A unall faint spot. 8. 17-283 O 9 5 314-0 16-9 -'4'4 Means ... ... 16 109 118-89 1 2 -96 M.-ans o 5 314-0 16-9 Group 1214. Two spots on December 20. Others appear on December 21 and 12, and the group forms a wavy line. Two small clu following Dec. 19-280 *o' 307 21-493 22-268 Group 1 2 1 1 . iters of s|K>ts, preceded on December 19 by a yery small spot. The : disappears before December 21. Dec. 20-307 21-493 22-268 23-184 24-290 25-224 18 33 10 25 '5 9 1 1 9' 109 164 170 "5 75 47 10 '7 1 1 '4 10 7 '3 *9 56 86 103 76 62 54 170-8 171-6 172-3 173-2 *74'4 *75'4 175-0 -17-6 -16-8 -16-6 -'7'3 -16-8 16-9 -16-4 -17-7 - ''3 4- 9-6 4-22-6 4-38-4 4-5'-6 4-63-9 6 '5 6 77 86 22 25 3 7 i 3 4' 43 n '4 282-1 183-5 185-8 285-9 -6-3 - 6-3 - 5'* - 5'' 2O-O - 5' + 12-9 4-13-2 1 Means 4 27 284-33 - 573 26-187 Means ... ... 11 69 273-24 ... i ;roup 1212. An extensive group of very irregular character, composed of a large spot of irregular outline surrounded by a great number of sma 1 spots. The group diminishes in size after Deoembi-r 21, and sutlVre continual change. On December 26 and following days the group consists of a great number of small spots irregularly distributed over a considerable area. Group 1215. A regular n\>ot. A faint spot is seen following it on Decemtier 24, and another on December 28. The large spot divide* into two portions on December 26 and 27, and the smaller portion disappears before December 29. Dec. 19-280 20-307 21-493 22-268 23-. 84 24-290 25-224 16-187 17-207 28-167 | 29-239 18 43 99 82 76 49 39 61 35 22 O 3 802 '235 1303 1105 983 1107 750 S4 258 34 3 47 72 5 42 25 20 33 21 16 632 868 891 808 610 503 562 399 299 181 34 126-3 226-1 226-7 226-5 226-9 227-2 228-6 228-5 229-5 129-7 131-1 - 87 - 8-9 - 8-6 - 8-9 - 8-9 - 9-0 l!l -->,< - 8-9 -75-8 -62-4 -46-2 -36-2 -23-7 - 8-8 + 4'8 + '7'4 + 3''9 4-447 + 60-3 l)-c. 10-307 21-493 22-268 23-184 24-290 15-224 26-187 27-207 18-167 19-239 12 43 54 67 60 68 55 53 37 *3 9 2 '94 2 55 329 382 346 378 2 75 117 '74 27 45 45 45 34 35 28 28 21 '5 207 206 in 218 216 180 '94 '44 124 "7 1117 211-7 210-5 21 ro 210-6 210-9 2 I 1-0 11 I -0 211-3 21 1 1 + 8-3 4- 4 + 8-. + 8-1 + 8-1 -|- 8-0 + 8-1 4- 8-2 + 8-4 + 8-6 -76-8 -61-2 -52-2 -39-6 -25-4 -12-9 O'l 4-13-4 4-16-3 4-403 Means ... ... 33 526 227-92 - 8-81 ... Means ... ... 32 182 2i 1-08 + 8-14 208 AREAS AND HELIOGKAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots cmitintied. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. 1 Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Group 1216. A large regular spot, with a long stream of small spots. The small spots undergo frequent changes. Group 1 2 1 8 continued. '883.,, Dec. 28-167 29-239 30 3' 1884. Jan. i 2-232 53 5 No pho No pho No pho 9 298 289 tograph. tograph. tograph. 40 28 28 (26 (4 (2, '9 '55 ,63 142 122 101 80 '947 '947 194-6 '94'5 194-4 '94'3 16-4 -16-2 -16-2 -'6-3 -.6-4 16-4 o + 9'7 + 23-9 + 36-9) + 50-0) + 63-0) + 76-0 1883. Dec. 20-307 21-493 22-268 23-184 24-290 25-224 26-187 27-207 28-167 29239 30 3 1 -1884. Jan. i 2-232 122 9 8 208 227 258 380 3^5 298 239 No pho No pho No pho 5 93 621 1 164 1895 '794 2081 1912 1914 1614 1241 ;ograph. ;ograph. tograph. 26 168 96 '54 '35 '39 196 164 '59 '45 (in (78 (45 1 1 356 839 "99 1465 1084 1 129 984 97' 862 746 573 400 227 54 o 205-8 204-6 201-8 203-0 203-0 203-0 203-2 2037 204-0 204-0 201'7 I99-3 196-9 194-6 o - 8-6 - 87 - 9"' - 9'3 - 9'4 - 9' 2 - 8-9 - 8-9 8-8 o -82-7 -68-3 -60-9 -47-6 -33' -20-8 - 7'9 + 6-1 + 19-0 + 33'z +44') + 54-8) + 65-5) + 76-3 Means 33 '77 194-02 -16-55 ... - 8-7 - 9-2 - 97 IO'I iQ-6 Group Three small 1219. faint spots. Means ... "4 778 202-O4 - 9' 2 3 Dec. 23-184 24-290 25-224 26-187 27-207 6 o 5 10 4 95 4 23 '4 '5 3 3 7 4 49 2 '4 1 I '5 2 59'5 *57'5 256-8 257-6 259-4 '3'4 + 8-9 fai'S + 33'o + 4 6 '5 + 61-8 Group 1217. A regular spot. Small spots are seen near it on December zi, 24, 25, 26, and 29. -'5'3 -15-0 -14-2 -13-2 Means 3 18 258-16 14-22 Dec. 21-493 22-268 23-184 24-290 25-224 26-187 27-207 28-167 29-239 3 3 1884. Jan. i 2-232 2 I 2 9 47 61 54 86 65 65 51 No pho No pho No pho 7 ?8 171 234 338 354 463 401 373 35' tograph. tograph. tograph. 39 4' 35 38 38 3 44 33 34 3 (30 (3 (3 3 149 204 191 213 '94 238 201 '95 205 '93 182 170 158 198-] '977 198-5 199-1 200-7 200-5 200-7 2O1-0 200'8 200-8 200-9 201'0 201-0 + 2'5 + 2-1 + 2'O + ''7 + 1-6 + '-9 + 1-9 + -7 + '9 + '9 + "9 + '9 + "9 -74-8 65-0 -52-1 -36-9 -23-1 10 6 + 3'' + 16-0 + 30-0 + 43'*) + 56-4) + 69-5) + 82-7 Group i 220. Two small spots, measured together on December 24. They move apart on the following days, and the following spot disappears before December 27. Dec. 24-290 25-224 26-187 27-207 28-167 29-239 '3 7 7 3 o 34 9' 59 33 1 1 5 o 10 5 4 i o 35 177-6 68 179-1 36 1807 18 181-7 6 181-8 3 181-4 -23'3 -5 8 -4 -23-3 -447 -227 -30-4 -22-2 -15-9 Means 34 192 200-06 + i'9 2 21-7 +10-6 Group 1218. A regular spot with .several smaller spots near it. The smaller tpots undergo several changes, and have all dis'ippeand before December 28. A very small spot i* seen near the large spot on December 29. Means 3 28 180-38 22-57 . A Group 1221. very small faint spot. Dec. 21-493 22-268 23-184 24-290 25-224 26-187 27-207 7 1 55 65 74 79 7i 75 168 2IO 337 37 446 386 18 44 5" 46 43 43 37 189 2 45 '97 *38 222 242 199 194-3 I 9 2-9 1937 I93-1 '93'4 193-5 194-2 -17-1 -,6-3 16-9 - 17-0 -,6-4 -78-6 -69-8 -56-9 -42-9 -30-4 Dec. 25-224 26-187 o 2 4 I 3 4 151-9 '49'3 12-6 -'3'' -71-9 -6r8 ID o -.67 - 17 6 - 3 '4 Means ... 1 4 150-60 - 12-85 ... TAKES AT GUEKNWICH, IX IXMA, AM> IX MAUKITIUS, IX THE YKAKS 1882 TO 1885. 209 1 Areas ami Hulii "^rapine Positions of Groups of Sun Spots cunt in Proj. Area for Date. Arm of i|>. (Jrt-Mlwirll ., . * Mean I *"f ud6 iTOD) Central of Groun. of Group. , Meridian. Projected Date. Area of Area for Group. KM Longitude of Group. if LODCltllufl UtiTude ofOronp. (>nt ~ l Meridian* "- ,, -- ,-,,,. \ CirilTi ""- Un.br, ,ol. Spot. UT.br. Whole (ilOUp 1222. A very small faint spot. Group 1224. An irregular cluster of iniull spot*. 1883. a . 28-167 0506 O 2507 6-9 +65-7 '883. Dec. 28-167 * 73 29-239 14 170 10 37 8 90 o 189-0 190-5 O - 8-3 + 4 o - 8-3 +197 Means ... o 6 , 250 7 -09 Means 9 63 18975 8-30 Group 1223. A small faint spot on Decrir.ber 18. The group has greatly increased in size before ibcr 29, and apjivan as a number of small spots scattered over a con- .. lable area, t!.- ];. . .ling spot being the largest Group 1225. A regular spot. It has broken up before January i, and only two or three very small faint spots remain to mark its place. Dec. 28-167 9 40 29-239 6 4 1 30 No pho tograph. 3 ' No pho tograph. 1884. Jan. I No pho tograph. 2-232 o 32 3-149 O 26 4-397 o 10 S'3'4 4 14 62 5 39 (4 33 (2 28 o O 10 o 13 o 5 2 "37 113-4 "3'5 "37 "39 114-0 114-3 114-9 115-2 -15-0 -71-3 -H7 -57-4 -47 -44'') -14-8 -30-9) -14-9 -17-6) -'4'9 - 4'3 -16-2 + 8-1 -14-1 +25-1 -5'3 4-37'S Dec. 28-167 0503 29-239 19 217 10 114 30 No pho tograph. (n 154 31 No pho tograph. (13 '94 1884. Jan. 1 No pho tograph. (l$ *34 2-232 14 223 16 274 3-149 6 184 13 43" i8ro 13*4 4'o 182-3 13-6 +ii'5 182-8 14-0 + 25-1) '83-3 ~'4'3 +387) 1837 -'47 +5*'3) 184-2 -15-0 +65-9 184-4 i 5' +78'* Means ... 11 201 183-10 14-29 Means 3 H 114-07 14 90 ----- PHOTO-HKLIOGRAPHIC RESULTS, 1882-1886. 210 AREAS AND HELIOGKAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. Date. Greenwich Civil Titoe. Projected Area of Area fbr Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Group 1226. Two small spots, a and b ; the following spot is not seen on January 3. Group 1231. A small spot, a, on January 2. Several smaller spots are seen following it on January 3, and again on January 5 and 6. Other spots precede it on January 7, and represent the group on January 8 and 9, when a has disappeared. These all disappear before January 10, and are replaced by two spots, b and c, of considerable size, of which c disappears before January 12. 1884. Jan. 2-232 3'H9 4 5 21 9 3 5 '5 9 o 166-5 168-4 o - 9' 1 - 9 -I o +48-2 +62-2 1884. d Jan. 2-232 3'H9 4-397 5-3I4 6-200 7-186 8-307 9-283 10-275 11-488 12-495 13-150 2 5 i 4 7 12 5 '9 63 12 4 12 28 12 9 22 28 47 45 124 222 3 6 39 4 5 i 3 4 o 6 3 12 5' 16 7 H 3' 9 12 12 '4 2 5 25 77 180 47 78 o 42-5 43'5 44'9 45-o 44'9 48-3 507 47-9 48-2 48-1 5'3 50-8 -13-3 137 o -75-8 627 Means 4 12 167-45 9-10 Group 1227. Several small spots, measured in two clusters on January 2. -13-9 -13-9 -'3-5 i 1-6 in -12-5 -12-9 -12-8 14-0 -44*9 -327 21-1 - 47 + I2'4 + 22-4 + 35-8 + 517 + 67-2 + 76-3 Jan. 2-232 3-I49 4-397 5'3H 20 4 121 122 36 4 12 IO 74 92 44 3 151-9 S3'3 154-8 158-1 + 8-0 + 7'5 + 6-8 + 5-8 +33-6 +47'i + 65-0 + 80-4 Means 6 56 I54-53 + 7-03 13-1 Means ... 9 45 47-09 -13-03 Group 1228. Three small spots on January 2. Two clusters of very small spots on January 3. Group 1232. A fine group, composed of two larger spots, a and b, with a number of small spots between them. The group undergoes various changes, and iy January 13 forms a compact cluster composed of a number of distinct spots. Jan. 2-232 3-I49 7 5 5 25 4 3 26 4 129-3 131-3 + 8-6 + 87 + 1 1 'o + 25-1 Means ... 4 20 130-30 + 8-65 Jan. 2-232 3 - '49 4-397 5-3I4 6'2OO 7-186 8-307 9-283 10-275 1 1-488 12-495 13-150 14-260 2 6 37 60 76 83 63 49 37 150 16 27 5 7> IJ 496 720 821 921 645 512 838 688 587 287 92 8 8 32 42 44 45 33 27 21 102 '5 33 4 258 347 446 5'3 497 503 337 272 479 472 5 2 9 345 269 37-1 35-6 35'3 35'i 35-2 35-3 36-5 37-5 37'3 37-i 37-6 38-2 39-0 + M-I + 1 -2 + 1 'I + i -3 + i -4 + 1 -2 + 1 'I + 1 'I + 10-6 + 10-4 + 10-3 + io-8 + 10-5 -81-2 -~. Group 1229. A wedge-shaped and somewhat compact group of small spots on January 2 The group undergoes many changes on the succeeding days, the spots in the middle of the group disappearing before January 5, leaving two small clusters. ,0 -54-5 -42-6 -30-8 -'7'7 - 1-8 + I2'0 + 24-9 + 407 + 54-5 + 63-7 + 79' Jan. 2-232 3-I49 4-397 5-3I4 6-200 7-186 8-307 9-283 5 '4 10 ii 5 10 3 4 127 105 80 96 69 102 49 30 3 7 6 6 3 9 3 9 70 55 42 53 43 81 58 66 99-1 lOO'O IOI-0 99-7 IOO-2 lOI-g I02'O I01'3 + 10-8 + i -i + i -i + i -9 + 1 -2 + 1 'I + i -3 + i -6 -Ml 6-2 + II-2 + 22'O + 34^ + 48-9 + 637 + 75'8 Means 33 45 36-68 + 10-93 Means 6 59 100-65 4-11-26 ... Group 1233. A small regular spot. Group 1230. Tanuafy " SPOt ' ' f " Wed by ^^ * mM S P t8 ' The '* '"'appear '-fore Jan. 3 '149 4397 5-3H 6'2OO 7-186 8-307 9283 10-275 7 4 7 3 4 3 15 20 28 36 26 32 '7 8 13 3 4 2 2 I O 28 20 21 22 '4 16 9 4 3i-3 30-3 30-5 30-9 31-0 31-6 31-8 31-8 -10-7 -74-9 -59'5 -47-2 -35-1 22'O - 67 + 6-3 + '9'4 Jan. 2-232 3-I49 4-397 5-3H 6'2OO 9 6 7 9 58 44 30 '7 21 7 3 4 4 5 47 28 16 9 1 1 69-2 7I-I 70-4 7I-9 72-2 + 11-9 + 12-3 + 12-3 + 12-6 + 127 -49-1 -35"' -19-4 - 5-8 + 6-2 IO 6 -107 -10-3 10-4 ! 10-9 10-9 -10-9 Means "-^- ^^ ^-~^ 5 * 22 ^-^ 70-96 + 12-36 Means ... 3 17 31-15 1 10-68 TAKKN AT GRKKNWKII, IN IMHA, AND IN MAURITII'S, IN TUB YEAKS 1882 TO 1885. 211 is ami Helic>L;raijhir Positions of Groups of Sun Spots eontm QiwDwieh Time. Projected Area of Aria for Group. M..i:i of (jioup. HM Latitude of (Jroup. Longitude from Central Meridian. Date. Greenwich CirU Time. Projected Area of Aftafor Group. M..H Longitude of Group. Mean Latitude of Group. !.,, ..,.:. Central Meridian. Umbra. Whole Spot Umbra. Whole S|...l. Urnlra. Whole Spot Group 1*34. Two small faint spo: r January 5, which aie, however, mraiiied together. Group 1*37 coitinued. lions by 1884., Jan. 11-488 12-495 13-150 14-260 15-164 16 17-260 '93 83 "55 70 54 No pho 10 967 7 I 5 763 624 403 bognph, 100 97 43 84 43 4 (38 34 489 39* 412 387 306 258 210 o 35S-* 355-6 356-0 356-1 3567 357-0 357'* o 10-9 -10-8 i ro i'9 -10-7 -10-5 102 o 1-2 + 12-5 4-21-5 4-36-2 + 48-8 + 62-8) + 76-8 1884.,, 4'397 5'3>4 O 2 12 12 O 1 6 o 80-0 82-1 o -207 -20-2 o - 9-8 + 4'4 Mr.;:. ... ... I 7 s --5 -20-45 ... Group 1235. ; fine group following Group 1231 in nearly the same lutitude. 1 at first of a \.\\-ft regular spot, a, which from January 4 to Janua iniii the rest of the group, followed l>y a long ic last s[H)ts of the group coalesce to form on January 7 a Ii >. Tin .- rapidly in number, urrangen area, cloMng ii| leaving i behind, until on January i completely isolated as a was on January 4. Means ... ... 5' 443 355^5 10-88 consists ry 10 is stream of rge s|x>t, lent, and Group 1238. Two small faint spots. i ft is as Jan. 6*200 5 o 8 54-8 - 6-3 1 1-2 Jan. 4-397 rs4 6'2OO 7-186 8-307 9-183 10-2-5 11 488 12-495 13-150 14-260 15-164 7 54 90 212 l6l l8l **5 286 283 2 3 6 67 54 264 619 IOI 1 15 28 i-:; 1563 854 2168 1770 1486 1001 5*9 10 68 80 '55 97 98 121 161 '2 167 65 70 1097 873 94+ 1109 1034 860 99* 1215 1 1 18 1066 970 755 7-9 10-5 11-4 10-8 11-9 117 12-8 13-8 15-2 5-8 15-8 15-0 + '5'5 + '5'4 + '5'4 + '5'5 + 15-1 + 15-6 + 15-1 + '4'5 + 14'* + 14-2 + H-* + 147 -81-9 67-1 Means ... o 8 54-8 - 6-3 -54-6 -42-2 -26-4 13-8 Group 1239. Two very small sjiots. + 0-4 + I7'4 + 32-1 + 4''3 + 55'9 + 67-1 Jan. 6-200 .. o 7 31-9 -13-6 -34-1 Means ... ... o 7 31-9 -.3-6 ... Group 1240. A small faint spot. A second appears near it on January 7, and others on January 8. On January 8 and the succeeding day*, the group consists of several small spots in a compact cluster. It is measured in two |rts on January 10. Means ... ... 1 06 1003 1272 + '4'95 Group 1136. i! very small >]>ots on January 5. The group has greatly increased in size by January 6. On January 7 only one large regular spot is seen close to the sun's limb. Jan. 6-200 7-186 8-307 9-283 10-275 11-488 o o o o 2 4 15 5' 49 79 36 o o o o I '3 21 44 3* 46 9 344-5 345'" 344-0 34+-9 343-5 344-8 -12-8 12-1 -I2-, 12-1 -12-5 -11-3 -8l 5 -67-9 -54-3 40-6 28-9 -n-6 Jan. 5'3'4 6-200 7-186 o 14 '3 '49 5 58 o 7 I 2 '3 207 146 135-6 135-0 132-2 -17-2 -16-6 -17-8 H-57'9 + 69-0 + 79' 1 Means ... o *9 344-47 12-22 10 122 ' 34'*7 17-20 Group 1241. A regular spot. It divides into two parts, which are measured together, on Jnnnary S. It breaks up further on January 9, and on January n only one small spot remains. Group 1237. 1 A large regular s-'Ot Small spot,-, are sei-n in it immediate neighbourhood from dav to day. These arc usually measured with the larg>> SJK.I. i.nt on January 10] n, ii and 13 they are measiire3 ii 2 3 2 8 35 78 47 7 '3 '5 342-0 342-5 34*7 34*'5 34*'5 341-8 ~ 9'3 - 9'4 - 9'9 _ 9-9 - 9-8 - 9'' 84-0 -70-5 -55-6 -43-0 -29-9 -146 Jan. 5-314 6-200 7-186 8-307 9-283 10-275 4 3* 60 ll 77 110 108 327 635 905 1079 1058 '5 48 IS 45 58 392 496 599 629 631 557 355-1 -10-9 354-8 -10-9 355-0 -in 355-0 -u-2 354-8 -11-3 355-0 -ii-o -82-6 -71-2 -58-0 -43'3 7-186 8-307 9-283 10-275 11-488 -307 ~'7'4 Means 8 5' 34 2 '33 - 9'57 212 AKEAS AND HELIOGKAPHIC POSITIONS OF GROUPS OF SON SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots -continued. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Umbra. Whole Spot Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Group 1242. A small spot. Group 1246. A small regular spot, a. Two small spots, which are measured together, follow it on January 9. They move apart on the following days and are measured separately as b and c. They undergo several changes in size; position and shape. i884- d Jan. 7-186 o 5 O II o 128-1 o + 8-0 o + 75'' 2 O 5 35 o II I '4 35 34 132 105 37 4 3 o 4 22 O 7 i 29 43 27 85 59 20 2 o 323-6 320-7 322-5 320-9 319-9 318-8 316-9 o + io-8 + 10-7 + 10-6 + 10-6 + 10-6 + ii-8 + 12-6 o -747 f.. .Q Means ... ... O II 128-1 + 8-0 ... 1884. d Jan. 8-307 9-283 10-275 11-488 12-495 13-150 14-260 -49-9 -35'5 -23-2 -157 - 3- Group 1243. A small regular spot, a, followed by several smaller spots. The regular spot alone remains on January n. Means ... 5 38 320-47 4-H'IO Group 1247. Two small spots. They are measured together on January 9, but separately on January 10, when they are somewhat further apart. Jan. yi86 8-307 9-283 10-275 11-488 12-495 13-150 14-260 15-164 2 20 4 J 9 9 16 16 8 6 30 no 132 112 53 49 S> 12 IS 4 '9 10 ii 10 8 9 5 4 5 105 f 65 28 26 27 7 10 342-1 342-1 343'S 346-1 347-3 347-6 348-I 348-5 348-6 + 13-1 + 12-6 + 12-8 +12-4 + 12-3 + I2-I + I2'2 + 12-6 + 12-6 -70-9 -56-2 42-0 26-3 - 9' 1 + 4'5 + 13-6 + 28-6 +47 Jan. 9-283 10-275 20 7 o 12 4 35-' 350-6 + H-3 + 11-4 -35'4 -21-8 Means ... o 8 350-35 + M-35 ... Means ... ... 9 46 345'99 + I2-52 ... Group 1248. Three small spots. The first two spots are measured together. Group 1244. A small faint spot. Three others are seen with it on January 9, the four being arranged iu two pairs. On January 10 the four spots are arranged in a straight line. The two pairs of spots have moved away from each other by January 1 1. Jan. 10-275 2 33 2 28 64-6 + 10-3 + 52-2 Means ... ... 2 28 64-6 + 10-3 Group 1249. Two small spots measured together on January 14. Jan. 8-307 9-283 10-275 11-488 o o 5 20 4 26 76 57 o 3 12 4 9 47 3i 342-0 3417 342-2 340'5 -24-2 24'O -24-1 24-6 -56-3 -43-8 -30-2 -15-9 Jan. 13-150 14-260 9 o 22 12 IO O 26 28 39-6 37'9 - 6-3 - 6-7 + 65-1 + 78-0 Means ... ... 4 2 5 341-60 -24-23 Means ... 5 27 3875 6-50 ... Group 1245. A small spot. Group 1250. A number of very small faint spots scattered over a considerable area. Only one spot remains on January 15. Jan. 13-150 14-260 15-164 2 4 o 20 I 10 5 I 2 O 4 3 347-8 348-6 346-0 I 0-0 I I'D - 9-8 + 13-3 + 28-7 + 38-1 Jan. 8-307 o 2 o 3 336-9 -277 61-4 Means ... o 3 336-90 -2770 Means ... ... 2 25 347-47 10-27 ... TAKEN AT GUKK.NWIc II, IN Isi'IA, ASH IN MAUK1T1US, IN TUB YEARS 1882 TO 1885. Aiv;us iiinl Hr!io;-r;ij.ihic 1'o.siti'His nf Croups of Sun Spots continued. Date. Greenu icli Civil Time. Two small fai January i ,Iau brmk- ii| consists ol of small s| the' same j hare dina] 1884.,, Jan. i 3- 150 14*100 15-164 16 17*260 18-356 19-322 20-546 "443 22-262 23-130 4-515 '5-448 i of Ami for HI". Mean ::u.le of Group. \!,,n Latitude of Group. Longitude fioni Central Meridian. Date. Qnenwich Civil Time. Projected Area of Area for Group, Mean Longitude of Ci Mean Latitude of Group. Longitude from Centr.il Meridian. Umbra. Whole Umbra. Whole Spot Umbra, Whole Spot. Umbra. Whole Croup 1251. - on January 13. The K ro ''l' rapidly increase* in size. On nipoecd of nine small spots, BMMV*4 in two clusters. On 5 these hare coalesced to form a large Mid irregular spot. This into a number of -pots l*-f,ne January 17, ana the grup thru a large spot, closely followed by another large spot, b, and a numln-r K>t around them. Tin- group undergoes further i hnngrs, but retains li.ir.n ter until January 14, by which date all the small spots [vrartd. Group 1154 continued. 1884.,, Jan. 21-443 22*262 23-130 H'5'5 *3 6 IO 4 o 81 50 35 xo *4 II 6 3 o 4' *5 18 3 '9 o 223-2 223-4 ax3*6 223*2 223*5 o - 0*3 - 0'4 O*I 0*1 *'I + 8-8 + 20-5 + 38-4 + 50-8 8 "3 No pho 163 21- H7 105 87 61 57 28 7 9 III '_! H'h. 7"4 1617 1290 1287 1166 850 547 168 49 9 93 (9 9* ''4 60 110 53 4* 48 4' 16 101 666 821 977 842 66 1 698 694 575 454 *54 '99 o *S7'3 256*5 256*0 255-6 255*1 156-3 *S5'3 254-8 *557 255-8 *55'9 *55'9 257*1 ->77 17*4 O -77*a -63-4 -51-9 -38-6) -*5'3 - 97 + 2-1 + '77 + 3"4 + 4' + 5*'8 + 71 i +84-4 25-448 - 0'5 Mi'-ltlB ... 6 33 222-30 0*30 -18*1 -ill -18*3 -'77 -17-8 -18*2 -183 -17*9 -18-2 -18*4 -18** Group 1255. A Urge regular spot, a. A second spot, 6, is seen on January 19 after a hag passed out of sight at the west limb. On January z8 thin group and Group 1263 are measumf on a different photograph from that on which the remaining spots are measured. Jan. 17*260 18-356 19-322 20-546 21*443 22*262 23-130 H'5'S 25-448 26 27-500 28*411 29-362 68 78 "3 169 158 33 '37 120 97 No pho 77 4 2 258 449 545 643 79 761 734 656 582 tograph. 33* >73 ll n i 7* So 98 83 68 J 9 !! 60 (7* 85 78 ii **l 416 386 37' 4'5 386 367 358 360 364 369 334 94 207*6 208-3 207-7 207*5 207*8 207*9 208*1 208-0 208*6 209-0 209*5 209-3 207-2 - 8-1 8., -72-8 Moans ... 58 535 *559S 18-03 4 - 8-x - 8-5 57 7 -45'5 29-6 -'7'5 - 6-7 + 5'o + 23-2 + 35'9 +49-8) + 637 + 757 + 86-1 Croup 1252. A small spot, a, on January 15. Two others, b and c, follow it on January 17, but b disappears before January iS, e before January 19. A fourth spot, d, appears on Janu.iry iS ; spots a and d move away ' tlier. - 8*5 - 8*6 - 8*6 - 8-5 - 8*3 - 8*6 - 8*9 - 8-8 1 1*0 Jan 15-164 16 17-260 18-356 19-322 20-546 3 5 * No pho togrmph. (8 2; 162 14 14 82 9 6 52 5 4 61 4 3 48 93 54 4* 7* 297*2 +18*1 296*9 +18-5 296*5 + 18*8 298*6 +18*8 299-3 +18-6 298-5 +18-0 -107 + 27) + 16*1 + 32-6 +46-1 Means ... 73 357 208*19 - 8*54 ... + 01 4 Group 1256. A regular spot. .3 7 5* 297*83 +18-47 Croup 1253. A small fuint spot. Jan. 15-164 o 8 o 4 291*7 -'3'' -16-* Jan. 17-260 18-356 19*322 20*546 21-443 22-262 23-130 54-5I5 25*448 26 27-500 28-539 29-362 4 >4 22 23 43 20 '7 28 *7 No [-ho 10 9 57 102 '54 170 78 164 162 48 121 tograph. 65 39 3 9 '5 '7 '4 *3 IO 9 '5 16 (1 S 10 '5 '33 in IXI 103 97 84 ll 79 7" 67 62 65 '3 202*8 203*4 202*9 2O3-1 203*4 203*4 203*5 X03-I 203-2 203*6 203-9 204-3 204-8 203-49 + ' + -i + "3 + 0-9 + -i + -o t 3 + -8 + '5 + ' + '3 + "4 -77-6 -62-6 -50-3 -34-0 Means ... ... o 4 291-7 -13-1 ... Group 1254. A regular spot, a, followed by several very small spots. The whole group is metunred together on January 17. The smaller spots vary iu number and position from day to day, and are not seen after January 10. zi 9 1 I'2 + 0-4 + 18-3 + 3'5 +44-3) + 58-1 + 7Z-3 + 83-7 Jan. 17-260 18-356 19-322 20-546 3 7 7 26 12 7 6 99 1 1 1 3 5 10 4 12 54 58 58 xi 8-8 221*0 221-4 222'6 - 0-7 - o-3 o-o - '3 -61-6 -45-0 31 8 --'4-S Means ... ... '3 84 + 1*28 ... 214 AREAS. AND HELIOGRAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas anil Heliographic Positions of Groups of Sun Spots continued. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mflall Latitude of Group. Longitud( fiom Central Meridian. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Group 1257. Two small spots. Group 1260 continued. 1884. Jan. 29-362 3"34' 3I-34I Feb. i -4 50 2-252 '43 1 08 47 4 6 1017 904 605 438 221 80 68 37 5 12 562 57 483 53' 432 o 143-2 '437 144-6 144-8 144-2 o + 6-5 + 6-5 + 6-4 + 6-5 + 6-5 o + 22-1 + 35-5 + 49-6 + 64-4 + 74'3 1884.,, Jan. 19-322 3 24 2 '7 o 2957 I2'I o +42-5 Means ... ... 2 '7 295-7 I2'l Group 1258. A small spot. Means 55 4 ] 5 142-15 + 6-34 Group 1261. A regular spot, o. Small spots are seen near it on January 27 and 28. It breaks up into a number of small spots on passing the central meridian on January 30. Jan. 22-262 4 5 271-2 + 21-9 +56-6 Means 5 271-2 + 21-9 ... Group 1259. A regular spot, a, which diminishes in size day by day, and disappears before January 30. A small spot, 6, is seen near it on January 24 ; two other spots, c and d, appear on January 28, and a fourth, e, on January 29, but on January 30 and 31 only one small spot, d, remains of the entire group. Jan. 24-515 25-448 26 27-500 28-539 29-362 3-34i S''34 Feb. 1-450 2-252 No pho 59 48 16 22 '5 9 '4 79 tograph. 251 320 218 I 7 2 I 3 2 28 '3 o o (20 4 27 9 1 1 8 5 o 37 102 '35 6 7 182 H7 89 7 16 9 107-3 107-3 107-4 107-5 108-1 1077 107-4 107-5 107-5 108-6 + 10-4 + 9'* + 9'4 + 9'6 + 9'3 + 9'9 + 10-0 + 10-8 + 9' 6 + 9'4 -77'5 -65-4 -5i-9) -38-3 -*3'9 -i3'4 - 0-8 + 12-5 + 27'i + 387 Jan. 22-262 23-130 H'5'5 25-448 26 27-500 28-539 29-362 30-34 1 31-34' 6 8 16 2 No pho '5 23 7 4 65 86 '33 97 tograph. 24 83 84 8 21 I I 8 12 I (5 8 12 4 o 3 125 9 96 58 36 '3 42 44 4 '3 387 140-3 139-6 140-6 140-7 140-7 '35*3 135-6 132-7 132-8 -,6- 5 -16-8 -17-1 -17-5 -177 17-8 -75'9 -62-8 -45-2 32-1 -18-6) - S'' + 3'3 + 14-5 + 24-5 + 37'8 Means ... ... 12 102 107-63 + 976 ... -17-0 -167 -15-4 -15-1 Group 1262. Five small spots in two clusters on January 27. One spot lias disappeared before January 28, and the others seem through the effect of foreshortening to form but one cluster. Means 6 52 '377 -16-76 Group 1260. Two small spots on January 23. A third spot appears on January 24, but the preceding spot increases in size, and other spots appeal- near it. The group increases yet further on the succeeding days, and consists on January 27 of four large spots following one smother in a straight line, with a great number of very small spots clustering round them. The two preceding large spots approach each other, and are measured together on January 28 ; they after- wards coalesce to form spot a on January 29. The two following spots unite in a similar manner to form spot It. The smaller spots undergo constant changes both in number and size. Jan. 27-500 28-539 3* 12 209 101 43 27 262 22 9 212-8 2IO'5 -17-0 -i 8-0 + 67-0 + 78-5 Means 35 246 211-65 -17-50 Group 1263. A small spot on January 27. A second spot is seen near it on January 28. On January 28, this group and Group 1255 are measured on a different photograph from that on which the remaining spots arc measured. Jan. 23-130 24-515 25-448 26 27-500 28-539 o 44 63 No pho 190 228 12 162 621 tograph. 792 1280 o 32 38 (68 98 120 16 I2O 378 393 408 670 136-5 139-0 140-2 141-7 143-2 142-6 + 6-9 + 6-2 + 5'8 -f- 6-0 + 6-2 + 6-2 -66-6 -45-8 -32-5 -17-6) - 2-6 + 10-6 Jan. 27-500 28-41 I O O 12 53 o c 10 65 I 99 -8 200-3 I I'O -13-2 + 54-o + 66-7 Means 38 2OO-O5 I2'IO ... TAKES AT <;i;KKN \V1CII. IN ISIUA, AM" IN M Al'l;ITIUS, IN THE YEABS 1882 TO 18S5. 215 Areas and Hi-liiynijiliii: I'ositi.ins <>i Croups of Sun Spots cvittm Date. Projected Area of Area Tor Group. jbu M,an Longitmli Dajfe Projected Area of Area for up. M Mara Longitude ft. .in Longitude Latitude Longitude Latitude Ciril Time. Umbra. Whole Umbra. Whole of Ctmup. of Group. Ceutral Meridian. Civil Time. 1 Ii: ! i. I'mbra. Whole of Group. of Group. Central Meridian. .-j..t. S|10t. Spot Group 1264. Group 1267. A In: 'ion, ', is detached from tin main spot on January Z9, and a second |mrtioii. . "ii Febiuary i. The spot e breaks up into several small >p"t- on the following day, moving forward and northward at the name it disap|x-ars In-fore February 6. Some small ipots are seen close to the principal spot* on January z8, 19, 31, and February i. A large regular |>ot, a, closely followed by another large irregular spot The latter has broken up by February i into several portions, which are, however, measured together, and afterwards diminishe* in size, disappearing before February 9. Some small spots are seen near a on February 5 and 6. 1884... Jan. 30-341 34 *5' 78 638 e 27*8 o -25*0 80*4 h 1 o o e Jan. 27-500 28-539 4' 104 1 5 8 477 70 104 480 73-9 73-9 + 9-9 + 10-5 -71-9 -58-1 31-341 7' 614 84 753 28*6 -24*9 -66-4 29-362 30-341 3''34' Bi 60 85 678 743 839 62 38 48 5*7 468 464 73-8 74'* 74-8 + 10-2 + IO-3 + 10-2 -47'3 -34-0 20-2 Feb. 1-450 2-252 3 "47 897 "4 95' No pho tograph. 123 (97 753 665 630 28-1 7-7 27*7 -24*5 -24-4 -*4'4 -5*'3 -42-2 -77) Fi'b. '-450 i-i 1072 563 74-4 + 10-4 - 6-0 4-455 5-298 209 150 1099 1026 "4 79 594 54* 27*6 -*4'3 -*47 -13-2 2-252 il$ 736 60 385 75-o + 10-4 4- 5'' 6-156 144 945 77 504 27*5 4 9-' 3 4-455 No ],!, 162 tojjraph. 668 (82 103 426 75-0 75-0 + 10-6 + 10-8 4-197) + 34'* 7-364 8-287 '43 107 871 727 82 69 53 465 27-1 26-5 -24-6 -24-6 + *4'5 + 36-1 5-298 26 385 20 290 75-2 + I1'2 +45-4 9'*4S 74 553 57 428 26-2 2 4'5 + 48-4 6-1 ,6 38 299 38 2 94 75'4 4-117 + 57" 10-468 107 370 121 420 25-9 -24-2 4-6 4 -3 7-364 10 1 16 18 216 75-2 + II- 9 47*-6 11-431 53 212 10 9 434 26*5 -*4'3 +77-5 Means 61 399 74'<>5 + 1068 Means 9 564 27-28 -*4'S3 ... Group 1268. Group 1265. il small spr>t. The group in measured as a whole on January 28. The A large irregular spot, a, with a number of small spots in its neighbourhood. The small spots undergo constant changes in size and position. The Urge spot, a, al.-o undergoes great changes in shape and size. arrangements of the spots change from diy to day. Jan. 31*341 *7 266 46 454 24-1 4'33 _ 7 o 9 Jan. 28-539 29-362 30-34' 33 1 2 12 9* 76 4* '9 7 10 53 33 160-4 161-4 161-8 - 5-8 - 5'7 - 5-8 4*8-4 +40-3 + 53-6 Feb. 1-450 2*252 3 9* 48 No pho 544 544 tograph. 94 38 (49 55* 428 453 23-0 23*2 4'3-6 + 12-6 4'3'* -57'4 -467 -32-1) Means ... 12 45 161*20 - 5'77 4-455 5*298 1 06 73 853 59 73' 4 477 395 *3'3 24-2 413-8 413-8 -'7'5 6*156 82 820 44 439 24-5 + 13-8 + 6*1 7-364 85 69, 48 i 396 413-6 4209 8*287 74 477 47 303 *3 5 + '3-6 + 33'' 9"*45 28 339 22 256 22-6 4 '3-6 444"8 Group 1266. 10*468 39 23 + 45 267 22*8 4 '3-6 + 61-2 A regular "'43' 43 161 95 354 *37 + 14-0 +74-7 Mean* > 5* 398 23*48 + I3-54 :.. 29-362 17 35 55 "4 41-1 + 9'5 80-0 30-341 '7 >*3 22 162 41-9 + 9"3 -66-3 3'"34' 20 191 17 163 4*7 + 8-9 -5 2 '3 Group 1269. 1 1-450 56 *94 37 '95 42-0 + 8-7 -38-4 A small spot A second is seen on February z. 2-252 35 -9" 20 74 4*"3 + 8-8 -27-6 3 'io tograph. (7 '75 42-6 + 85 - 12-8) Feb. 1-450 o 14 o 27 7'4 4i2'8 -73*0 4H55 67 339 34 '75 42-9 + 8*2 + **' 2-252 o 21 o 25 7'5 + 13'' -624 5-298 37 302 20 161 437 4- 8-1 4I3-9 3 XM pin tograph. (4 26 7-6 -47-8) 6-156 35 263 20 1 i' 44-o + 8-4 + 25-6 4-455 13 4' 8 26 7-6 + '3 > -33* 7-364 30 "4 21 '54 43-8 + 8-0 4-4i'2 5-298 8 22 5 13 82 4'3 -i -21-6 8-287 20 1 80 '7 '56 43-6 4- 7'8 + 53-2 6*156 8 *7 4 '4 8-5 - 9'9 9-245 ii 102 '3 127 42-9 + 7-8 465-1 7-364 4 2 '5 83 412-9 4- 57 10-468 o 3' o '35 43'' + 8-0 48i- 5 8*287 2 '3 1 7 8-2 412-8 4'7-8 Means ... ... 23 '57 42-82 4- 8*46 ... Means 3 '9 7-92 + 12-72 ... 216 AREAS AND HELIOGRAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Umbra. Whole Spot. Umbra. Wliole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Group 1270. Several small faint spots arranged in a nearly straight line. The group undergoes frequent changes. Group 1273 continued. 1884. d Feb. 11-431 12-481 13-403 H-559 I5-453 22 16 o o o 81 84 4 16 12 12 10 O o o 45 5i 3i 18 27 o 324-7 325-8 327-8 328-0 326-7 o + 13-0 + 13-5 + 15-5 + 16-3 + 16-3 o + 157 + 30-6 + 44'8 + 60-2 + 70-7 i88 4 . d Feb. 4-455 5-298 6-156 7-364 8-287 10 7 6 3 5 81 I 3 63 63 77 6 4 3 2 3 50 47 35 35 47 o 13-3 15-1 15-5 16-6 17-7 O + '7'4 + 17-4 + 17-3 + 17-2 + 16-9 o -27-5 -147 - 2-9 + 14-0 + 27-3 Means 3 38 324-81 + 13-98 ... Means ... 4 43 15-64 + 17-24 ... Group 1274. A small spot. Group 1271. A large regular spot. A second spot appears on February 14. Feb. 8-287 2 5 2 4 37-6 + I2-I + 47'2 Feb. 4-455 5-298 6-156 7-364 8-287 9-245 10-468 11-431 12-481 13-403 I4-559 iS'453 12 12 16 26 44 45 58 5 35 42 42 2 4 1 06 156 225 302 278 293 295 270 244 2IO '53 108 21 13 13 16 25 *4 3i 28 22 32 49 48 186 170 182 191 57 156 157 'Si 156 163 182 241 329-0 329-4 3 2 9-4 329-1 329-0 328-8 328-9 329-1 329-5 329-6 330-4 33'-i + 11-3 + 11-4 + 11-6 + 11-6 + 11-6 + 11-9 + I2'0 + 11-6 + 11-9 + I2'O + 12-6 + 12-4 - 7 l-8 Means ... ... 2 4 37-6 +I2-I -49-0 -33'5 -21-4 Group 1275. Three small faint spots measured together. 9 + 7'3 + 20-1 H-34'3 + 46-6 + 626 +75-J Feb. 8-287 19 O 10 I'9 10-2 + 11-5 Means ... ... O 10 1-9 10-2 Group 1276. A small spot on February 9. On February 10 the group consists of three spots of considerable size, the first two being measured together. Means ... ... 27 174 329-44 + 11-83 ... Group 1272. Two small spots on February 5, on which day they are measured together. They have moved apart and increased in size by February 6. The preceding spot has disappeared by February 7. Feb. 9-245 10-468 o o 12 113 O 13 257 38-1 36-9 + IO-9 + 12-4 + 60-3 4-75-3 Means ... o 135 37-50 + 11-65 ... Feb. 5-298 6-156 7-364 8-287 4 9 8 5 21 30 2 5 o 3 5 4 4 13 16 13 34 1 " 2 340-9 34'3 340-5 - 4-4 - 4-5 - 4-8 - 5- -48-6 -37-5 -22-3 - 9"9 Group 1277. A fine group composed of two large regular spots, a and b, and a number of smaller spots between them, which undergo frequent changes, and which have all disappeared by February 20. Means ... ... 3 12 34'73 - 4-68 Feb. 9-245 4 89 I 12 !55 191 3i7 186 198 No phc 153 No ph< 35 42 468 685 IOO2 IOI2 1373 1137 969 tograph 755 tograpli 220 18 132 107 1 06 112 168 96 105 (104 103 (78 5* 203 705 641 693 696 728 587 5'4 510 505 409 313 254'9 252-3 252-9 2 53'8 254-0 2 54'4 254-6 255-6 256-0 256-4 257-1 257-8 + 8-4 + 7-5 + 7'2 + 7-2 + 7'i + 6-9 + 7'2 + 7-2 + 7-4 + 7'5 + 7'5 + 7'4 82-9 Group 1273. A small spot when first seen. A second is seen on February 6, a third on February 7. The group consists after this of a number of small spots irregularly arranged, the size, distribution, and number changing from day to day. 10-468 I1-431 12-481 i3'43 i4'559 15+53 -69-3 -56', -41-4 29-0 -13-4 - i'4 + 13- + 26-1) + 39' 2 + 53-6) + 68-0 Feb. 5-298 6-156 7-364 8-287 9 -2 45 10-468 o o o 2 4 20 3 20 40 57 ,58 142 o 2 10 4 9 3i 34 87 76 321-4 322-6 325-1 323-6 3 2 3'5 3 2 37 + 12 8 + 13-2 + 13-9 + 37 + 13-9 + 13-6 -68-4 -55-8 -37'5 -26-8 ~'4'3 + 2-1 16-470 17 18-398 '9 20-481 Means 98 542 254-98 + 7-38 TAKEN AT GREENWICH, IS Ixi'IA, AND IS MAURITIUS, IN THK YKAR8 1882 TO 1885. 217 ainl Holio^raphir Positions of Groups of Sun Sjnits -continued. Il.lt.-. Greenwich Civil Time. Projected Are* of An* for Grouji. MM Longitude of Group. Mm Latitude of Group Lonp from Central Meridian. Date. Green wioh Ciril Time. MMM Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude !: . Central Meridian. Umbra. Wbak I'll,': r.. Whole Spot. Umbra. Who].. .-[...: Umbra. Whole up 1278. , whirh has diesp|>eurrd l>y Felmiai mi February 1 1. 711. A second spot, b, appears Group 1283. A small spot. 1884.,, ' Ki-li. i 3-403 '4'559 o o 2O 7 O O 21 5 o 220*2 220-5 o -15-8 -'5'4 -62-8 -47-3 1884-, Feb. io-41 O IO 7 1 1 57 21 6 5 6 34 '5 340-6 340-1 3387 o + 6-9 + 7'5 4- 8-6 + 19-0 +31-1 +43-5 1118 ... ... O '3 220-35 15-60 M'-aii* ... ... 4 18 339-80 + 7-67 Group 1284. A large regular spot, a, preceded by a numlier of Kmall spotH, which tliiuinish in sue day by day, and ilUap|x-ar liefore February zo. < Iroiip 1279. Two small spots. 10-468 " 43' o O 12 '7 o o - 9 333-8 333' 6 + 12-0 + n-4 + 12-2 + 24-6 Feb. 13403 '4'559 S'453 16-470 17 18-398 '9 20-481 21-538 22-283 23-394 24-456 25-498 38 103 96 99 No pho 100 No pho 90 57 44 5 49 '9 248 506 559 537 ! B i: . 615 togranh. 57' 490 384 *99 188 45 70 101 7' 59 (57 (11 47 34 *9 44 68 9 437 488 4" 324 318 |II 305 298 288 255 263 262 216 208-6 208-4 208-2 207-9 207-9 207-8 207-6 207-4 107-3 207-4 207-3 207-1 208-8 1 1-2 - 10-8 lO'O - 9'7 - 97 -74'4 -59-4 -478 -34'7 -22-1) iiia ... ... 8 33370 + 11-70 ... Group 1280. A single spot 7 - 9-6 - 9'4 - 9'3 - 92 - 9' 1 - 8-9 9-1 4 + 4-') + 176 MI -4 + 4'4 + S5'9 + 69-7 + 85-1 Fell. 10-468 11-431 12-481 o 3 o 18 o 3 o 3' 59 48 246-8 247-1 *477 -19-2 19-8 19-8 -74-8 61-9 -47'5 Mums 60 321 207-83 0-67 IMS ... ... 1 46 247-20 19-60 Group 1285. Two considerable spots, a and b, which appear suddenly near the centre- of the aim. Several small spots aro seen close to them. The ap|nraiice and areas of the spots undergo frequent changes. Group 1281. A sinjrli- .s|K)t. 10468 11-431 12-481 13-403 '4'>59 I5'4S3 16-470 17 18-398 o IO 27 43 25 4 16 S 4' 63 106 48 107 74 33 hignph. 23 '4 24 3 14 13 8 (8 8 '55 90 93 101 60 38 16 '4 I 2 238-0 2389 239-3 239'3 240-0 240-1 240-3 240-4 240-5 - 9-8 lO'I -10-4 10-6 1 I-O 10-9 -10-8 -10-5 10-2 -83-6 -70-1 -55'9 -437 -27-8 -15-9 2-3 Feb. 14-559 '5'453 16-470 '7 18-398 9 2 33 95 597 87 596 graph. 33 320 48 54 59 (52 44 1 60 34' 406 416 4*5 285-5 285-2 285-8 186-0 286-1 - '7 - "4 - '5 - '3 -o + '77 + 29-2 + + 56-') + 68-9 -Ho-5) + 23-3 MINIMS ... 5 350 285-72 - 11-38 Means ... 13 64 239-64 1C Group 1286. Two compact clusters of very small upott. The iin-inben of e.v hare coalr.s, . ; t,y F'-bruarv 16, thu forming -|>U. Tin' pbotagnph on February 21 i* much ov.-r-exposed. < Irn i|. 1282. A small pot. rVh 13-403 U'559 o 19 12 21 29 342-0 342-2 + 20-4 + 20-5 + 59' + 74-4 l-'-l'. '5 "4 5 3 16-470 29 '" 88 44 '4 8 45 22 249-1 249-2 101 10-1 - 6-y + 6-6 M.-aii- O *5 342-10 + 20-45 Means . . ... 1 1 34 249" '5 io- 10 ... PHOTO-HBLKKiBArHK- KESUI/TS, 1882-1885. 2 ^ 218 AREAS AND HELIOGKAPHIC POSITIONS OF GROUPS OK SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Group iz87. A scattered group of small faint spots. Group 1291. A regular spot, a. A small spot appears near it on February 22 and is measured with it. Other small spots appear on February 23. The whole j;riip is measured together as one on February 24. A small but dark spot, i>, appears on February 25. The group is measured in three portions on Febiuaty 25 and 26 ; a and b separately, and the remaining small spots together. The small spots seen on February 26 are wholly different from those seen on February 25. J88 4 . d Feb. 16-470 17 18-398 '9 20-481 21-538 22-283 No pho 7 No pho o o 6 37 tograph. 67 tograph. 9 2 76 38 o ( 4 ( o 4 23 29 34 43 5' 44 24 205-0 204-4 203-8 204-3 204-7 204-8 204-5 - iS'S -,5-6 -15-6 -15-5 -15-3 -i 6-7 14-8 -37-6 -5'5) -13-4 + 0-8) + H'9 + 28-9 + 38-5 1884. ,, Feb. 18-398 '9 20-481 21-538 22-283 23-394 24-456 25-498 7.6-480 2 7' 2 34 Z 9 No pho 49 37 29 5i 2 5 38 28 '3 141 tograph. 35 302 306 240 221 83 '34 79 39 (36 3 2 21 '5 27 '3 28 20 12 I 9 I 211 2 3 172 I6 3 s 119 no 96 68 o 150-0 150-7 151-4 151-9 152-0 52-3 152-6 152-9 153-1 152-9 o + 7-3 + 7-2 + TO + 7'4 + 7'5 + 7'9 + 8-0 + 8-8 + 9'9 4- io- 1 o -67-2 -52-8) -38-4 Means 2 35 204-50 -15-57 ... 24 o 14-0 + 0-9 + 15-2 + 29-2 + 4 2 '3 + 52-1 Group 1288. A large regular spot, a, followed by a stream of smaller spots. Means ... ... 2 4 148 151-98 + 8-1 1 Feb. 16-470 '7 18-398 '9 20-481 21-538 22-283 2 3'394 24-456 25-498 26-480 27-234 i No pho 55 No pho 104 102 61 96 80 51 15 I 31 tograph. 268 tograph. 575 658 828 73' 592 3H 164 45 I (22 4 2 (50 58 54 33 57 58 5 26 5 5 124 197 2 57 317 354 450 437 425 3'3 272 215 173-0 173-8 I74-5 175-1 175-6 176-5 177-0 '77-5 178-4 180-3 180-9 182-8 4-14-0 4-14-2 + H'3 + 14-1 + 13-9 + 13-5 + 13-3 + 12-9 4-12-9 4-12-8 4-12-7 + 13-3 -69-6 -56-2) -42-7 -28-5) -14-2 4- 0-6 + II-0 4-26-1 4-41-0 + 56-6 4-70-1 + 82-0 Group 1292. A scattered group of small faint spots. Feb. 20-481 21-538 22-283 1 1 o 37 43 12 6 o o 20 27 9 213-4 214-0 211-9 -16-2 -I5-5 -18-8 4-23-6 4-38-1 + 45-9 Means 2 9 213-10 -16-83 Group 1293. Two spots close together. They are measured together until February 24, but separately afterwards. The following spot break? up into three parts on February 25, but is still measured as a whole. Means 38 284 177-12 + '3"49 Group 1289. A number of small faint spots irregularly arranged. Feb. 21-538 22-283 23 4 394 24-456 25-498 26-480 2 7' 2 34 o 1 1 27 16 20 37 6 37 57 "5 1 80 131 97 58 12 20 10 I I 18 3 63 62 86 108 70 49 29 102-2 IO2'6 103-0 103-3 I04-0 103-6 1037 - 7'i - T - 77 - 7'5 -% ~ 7'3 -737 -63-4 -48-4 -34'' -19-7 - 7' 2 + 2-9 Feb. 18-398 '9 20-481 o No pho I 7 1 tograph. 16 (o i 1 1 18 2 5 259-5 260-5 261-5 -13-3 -11-4 - 9-5 + 4 2 '3 + 57') + 7'7 Means 1 1 67 IO3-2O 7'39 ... Means i 18 260-50 1 1 -40 Group 1294. A faint spot. Group 1 290. A small well-defined spot. Feb. 22-283 2 3'394 24-456 25-498 26-480 o o 10 3 37 1 06 61 67 o 5 3 32 69 34 36 98-0 9 6-6 97-1 98-4 98-7 - 6-7 - 7'3 - 7'5 - 77 - 8-4 -68-0 -54-8 -4'3 - 2 5'3 I2'I Feb. 18-398 7 4 213-6 -21-9 - 3-6 Means 4 213-6 -21-9 Means I 35 97-76 - 7'5 2 TAKEN AT (iKKRNWICll. IN IM'IA, AS'!' IN M AUUITirs, IN TI1K \K\K8 1882 In 1 J19 ' T.-ipliir Positions of Groups of Sun Spots continued. l>i-.-. QtMDvidh Ciril Time. ted Area of Area fur Group. M. ,-, .itud, of Group. V. M i Latitude of Group dim It "111 titral idiai I',: Greenwich civ,: Projected Area of Area for Qfoup. M. , Id Lat . roup. Longitude from Central Meridian. Umbra Spot Whole -]-:. Umbra Whole S|K,t. Umbra Whole Spot of Crnuji. Group 1295. A ragnUr ipot. A very small which ha Croup 1298. spot on February 15. Three upon on February 16, the laat two of re coalesced by February 17. 1884.4 Feb. 23-394 244S<> 2^-498 26-480 27-234 28 29-558 M.r. 1-434 2-553 3'*97 7 '5 20 25 16 No pin *7 '9 ID 8 33 64 98 '39 97 | .: i 9' 62 76 63 '9 9 '7 17 9 (" 4 10 10 6 85 80 82 94 59 54 48 34 47 44 e 74-5 73-6 73-8 73'4 73'3 73'5 73-6 73-2 73'3 73'9 o 4-117 + 12-4 4-12-1 + 12-3 + 127 + 12-5 + 12-2 H-12'3 + 12-2 4-12-1 o -76-9 -63-8 -49 '9 -37'4 1884... Feb. 25*498 26-480 *7'234 2 93 9 7 43* 238 107 33 6 484 421 174-0 172-7 '73-3 o + 87 + 7'3 + 6-7 + 5'3 + 61-9 + 72-5 -27-5 -12-,) + 3'3 + 14-5 + 29-4 +3 Means ... ... 47 304 '73-33 + 7-57 ... Group 1299. Two clusters of small spots. Only two spots remain of the following cluster on February 17, and these are measured nepaiat< !\ . ins ... '3 63 73-61 4-12-25 Feb. 25-498 26-480 27-234 *3 20 IO 80 'i 9 164 12 1 I 6 42 6 1 96 125-6 126*2 126-9 4- 10-6 4-10-7 + 11-3 + ''9 + ' 54 + *6 i Group 1296. Three sp.its close together on Februiry 14. On February 16 the group o ;md b. On February 19 u small regular ipot, c a little in advance of a. o ami IP are measured togeilier "ii M.irrh i, iv March i. ( has divided iuto two portions by March 2. ousisU of , appears Means ... 10 68 126-23 4-10-87 and dis- Group 1300. A small spot. 24-456 SH 26-480 27234 28 29-558 Mar. 1-434 2-553 3'*97 4' 57 45 44 No pho 4' 3' 37 1 2 204 254 305 223 _ . 199 171 35 1 1 1 42 4* 28 *5 (3 21 '7 23 IO 21 1 188 I8 S H "3 101 93 86 84 75-8 75-8 76-3 757 77-9 80-0 81-4 82-3 83-1 -14-1 -'49 - I4 -6 -14-2 ->37 -13-2 -12-4 -12-7 -61-6 -47 '9 34'5 -25-1 - 77) + 97 + 22-7 + 3^4 Feb. 25-498 26-480 *7'234 o 4 '5 5 o o o 5 12 4 58-8 59-6 59'4 4-10-1 + 9' 8 4-10-4 -64-9 -51-2 -4i-4 Means ... 7 59-27 4- 10-10 '3 2 ~i~4 B 9 Group 1301. A large regular spot, o, which has divi.le-1 into two portions by Mardi 5. The two spots an- i 1 separately until March 6. Some small spots are seen near a on March x, and others on March 3. M in- 26 '32 7870 -13-67 ... Group 1297. ular spot. Feb. 25-498 26-480 27^34 28 29-558 Mur. 1-434 z'553 3'297 4 5^5 6-339 7-454 33 82 67 No pho 74 'I 146 94 No pho 94 65 35 '23 3" 47' tograph. 885 86l 987 94' togra|>h. 54' 495 204 '44 33 72 (86 104 5 I 76 5 (56 62 5' 4 54 55 506 5'9 53' 474 5'8 498 426 353 39 237 4' 7 40*6 40-9 4''3 41-6 41-2 41-2 41-8 41-8 41-8 41-8 41-8 4-10-6 + 10-4 4io-S 4-10-6 4-10-3 4-10-3 4-10-3 4-10-4 4-10-4 4-10-4 4 io- 1 + 10-4 82-0 -70-2 *4'456 +98 26-. '54 28 29558 M.r. 1-4,4 P O 16 16 10 NO Jill" 10 8 1C 21 64 53 -i >i{i 'p!i 4' 20 2 O 1 1 - (8 4 6 *8 f>- 4 45 33 21 '4 1 Z 2 6.7 64-, 65-3 65-9 67-2 68-5 68-6 69-5 70-4 + 9-3 4 9'6 + - + 8-1 + 7-4 + 6-7 + 6-5 + 6-2 + 6-1 -75'7 _ 59 -6 -45'5 -34'9 -18-4) - 1-8 + 9"9 + 25-6 + 36-2 -599 -44-3) -28-7 -'7'5 - 2-7 + 7-6 + 21-9) 4-362 + 47-7 + 62-4 M.-IIH, ... 31 66-80 + 7-59 Means 78 458 41-46 4-1042 220 AREAS AND HELIOGKAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Helingraphic Positions of Groups of Sun Spots continued. 8 Date. Greenwich Civil Time. Projected Area of Area lor Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Group 1302. A small spot on February 26. A number of other spots appear before February T.J, and on February 29 the group consists of two large spots, a and b, and some small spots between them, b has broken up into a number of small spots by March 3, and on March 5 the group consists of a number of small spots in a fairly compact cluster, which are, therefore, measmed together ; but as the individual spots tend to move apart, the group is measured in four divisions on March 6. Group l 305. A small spot. 1884.,, Mar. 3-297 4 5'46<; o No pho o 5 tograph. 21 (o 3 8 12 o 23-4 23-6 23-8 G O + 17-7 -10-8 + 18-0 + 3-7) + 18-2 +18-2 1884. d Feb. 26-480 27 - 234 28 29-558 Mar. i '434 2-553 3-297 5-465 6-339 7-454 H No pho 136 U3 15 83 No pho 101 IO 15 48 tograph. 1077 918 8 7 2 688 tograph. 508 '97 "5 ' 10 (41 71 57 59 45 (62 78 12 O 4 35 297 558 46, 447 374 383 392 212 249 o 52-9 52-9 54-4 55-8 55'4 557 56-2 55'9 55-6 56-8 57-0 - 8-4 o -57'9 Means ... 8 23-60 + I7-97 2 - 8-6 - 8-9 - 8-9 - 9-0 - 8-9 - 8-9 - 8-9 - 8-8 - 8-5 -47-9 -31-2) -'4-5 - 3-3 + U-8 + 22-O + 3 6-o) + 50-0 + 62-7 + 77'6 Group 1306. A small spot. Mar. 3-297 3 o 3 332-3 + i i-o 61-9 Means 3 332-3 + 11-0 Group 1307. A regular spot, a, followed on March 9, 10, and n by several small spots. Means 4 3" 55'33 - 873 Group 1303. A regular spot, a, followed by a smaller one, b. The latter has broken up into a number of very small spots by March i. These have all disappeared by March 6. Mar. 3-297 4 5H65 6-339 7H54 8 9-543 10-566 11-228 12-593 5 No pho 32 23 27 No pho 21 33 7 o 61 tograph. 123 123 I2 7 tograph. 183 129 110 27 9 (16 23 '4 '5 (13 1 1 '9 5 o 105 97 88 76 69 84 98 75 74 24 322-8 323-0 323-1 323-1 3237 323-6 323-5 323-7 323-5 325-0 + IO"2 + IO-I + IQ-O + I0"3 + IO'O + 9-7 + 9-3 + 11-2 + 11-3 + 10-9 -7i-4 -57-0) -42-5 -31-0 -157 - 2-,) + 11-6 + 251 + 33'9 + 53-4 Feb. 27-234 28 29-558 Mar. i -434 2'553 3-297 4 5-4 6 5 6-339 7-454 9'543 10-566 4 No pho 20 2 9 5' 24 No pho 36 17 27 No pho 16 i 43 togrnph. I 5 312 *73 209 tograph. 227 182 109 tograph. 78 41 10 ('3 16 '9 29 13 (i7 20 10 18 (18 18 2 108 114 119 209 >59 116 I2O I2 4 106 74 81 87 93 2O'l 20-5 20-8 19-9 19-8 19-9 2O'I 2O'2 19-6 I9'3 18-4 17-5 I 7 -6 -26-3 -26-5 -26-6 -27-0 -27-0 80-7 -6 5 -l) -49'5 -38-8 -24-1 -H'3 + o-i) + 14-6 + 25-5 + 39'9 + 52-8) + 65-6 + 79' 2 26-9 -26-8 -267 -26-6 -26-5 26-6 -26-6 -27-1 Means ... ... '3 79 323-50 + 10-30 Group 1308. Two large irregular spots, a and b. A great number of very small spots are seen in their neighbourhood March 5-1 1 ; these are partly between a and b, and partly following 1. Means 16 116 I9-52 26-71 Mar. 3-297 4 5-465 6-339 7-454 8 9-543 10-566 11-228 '2"593 4 No pho 85 66 178 No pho '55 '34 65 48 69 tograph. 618 979 953 tograph. 935 829 753 374 8 ( I 5 61 4 1 94 (86 78 72 39 39 144 297 449 607 510 491 47i 446 439 293 317-0 317-8 318-5 318-0 318-5 318-4 318-3 320-4 320-5 322-3 -10-3 lO'I - 9-9 io-i - 9'9 - 9-8 - 9'7 - 8-8" - 9' - 8-7 -77-2 -62-2) -47-1 -36-1 20-9 - 7-3) + 6-4 + 22'O + 30-9 + 50-7 Group 1304. A small spot. A second is seen near it on March i. Feb. 19-558 Mar. i -434 2-553 7 o 19 119 13 4 o o 1 1 63 7 40-5 39-6 41-9 - 6-9 - 7'9 - 7'i -29-8 -19-1 2'0 Means ... 1 27 40-67 - 7-30 Means 55 4'5 318-97 - 9' 6 3 ... TAKEN AT (iKKKNWiril, IN IXhlA, AND IN MAURITIUS, IN Till YKAK8 1882 TO 1885. MS ami Hirliojiniphii 1 Positions of Groups of Sun Spots contim Data , wich Area of Area for ip. HHI Longitudr rimp. M. m Latitul- ofUroiip. l.o.'i^ilii'li IP-HI trmJ Meridian. Dath Greenwich Civil Time. Projected Area of Area for Group. M. v', Longitude of Group. Mean Latitude of Group. l,.npiud- from Central Meridian. Umbra. \v!,,:, Wh,,le Umbra, Whole S|."t. IMhn Whole Bpt tlrotip 1309. A mull regular iipot, a ; a second, 6, *p|*rs closely following it on March 9. Group 1311. A small spot. A second U seen close to it on March 10 ami 1 1, but the two are measured together. I8.V M;ir. ''-339 io-^6f> 1 1 12-593 4 7 12 1 10 O 26 58 ; .".,:.:.. 39 63 102 44 6 6 (7 7 4 5 o 4 5' 37 22 33 5* *3 o 282-5 283-2 '3 >'3 283-9 283-6 284-6 o - 4-8 - 5' - 4'9 - 4-8 - 4'9 - 4-8 o 71-6 - 5 6-2 -++) -28-6 -14-5 - 6-0 + 13-0 1884.,, Mar. 9-543 10-566 11228 o o 22 66 '9 o o o '3 35 10 o 278-9 279-1 278-9 lo'-I - 6-6 -33-0 -19-3 -107 Means ... ... '9 278-97 - 6'97 ... 49 Group Two small spot*, a and b ; a 1313. disappears before March 11. M'-.m^ ... ... 5 37 283-50 - 4-87 Group 1310. A rri-iilar *|>ot, which hrvak* up into several portion* on March 9. The group apiwars an a iiingle regular B|K>t on Mar )i 14, and as the group on the inti-rmnliate days alwaya forms a rompact c-lusti r, it i-. measured ax a whole. Mar. 9-543 10-566 11-228 12-593 *s 4 o 56 +3 '4 1 1 21 3 i 47 260-6 28 260-6 8 260-0 6 259-5 + lO'l + 10-4 + 10-3 + 9-6 -51-3 -37-8 29-6 12'I Mar. 6-339 8 9543 10-566 11-228 12-593 ' : H 15-4.63 16-441 [-503 18-438 ,; No iilio 56 9' I 9 89 N" pli" 44 45 *9 20 7 20 80 OKI mh, 625 429 J95 - '!' 3 l6 35 224 100 Jl '4 <;; 38 53 *7 45 (35 '5 28 21 '9 *9 48 *4 264 403 363 *34 201 8 7 '73 188 ,64 IOI '4 265-3 266-8 2677 268-6 268-4 268-1 2687 268-6 268-5 268-5 268-9 268-2 269-2 -16-2 -88-8 ,. . . Means 6 22 260-18 + 10-10 -16-8 16-9 -17-2 -i 6-8 -17-0 -16-8 -166 16-9 -16-3 -16-6 -16-2 72 o -68-0) -43'3 30-0 21'5 - *'9 + 10-1) + 23-0 + 3+7 + 47'9 + 61-3 + 74-6 Group 1314. Two large f>pott, a and 6 ; a breaks up into several portions on March 12, and cliiiiiiiishi-s in sizi- ; it is still, however, measured as a whole. A small spot, e, is seen between a and b on Mnrrh 14 and 15; a and e disappear before Marvli 16. Mar. 9-543 10-566 i 1-228 12-593 '3 4-577 15-463 16-441 17-503 18-438 '9'474 8 *5 11 No ]>ho 52 68 33 44 3' 8 '23 270 368 34' r 336 35 I 316 256 112 48 '7 " 36 45 (37 *9 37 18 *7 21 7 284 3 I 6 367 2 3 6 21 I 18 S 1 9 2 172 53 76 43 236-6 233-6 233-2 233-1 232-8 232-4 232-0 231-6 231-4 231-5 231-0 -H3-1 + 14-0 -(-14-1 + '3"9 + '4'3 + 47 + 14-8 + 15-0 + 5-3 + 15-1 + 15-0 -751 -64-8 -56-4 . 3 207 268-12 -16-68 -385 -25-8) ip 1311. A regular .-|>ot. 13 1 - 1-8 + 10-6 + *4-5 + 36-9 + 50-1 Means 28 207 232-65 + '4-48 ... 7H54 8 9-543 10-566 11-228 '2'593 13 '4'577 T463 16-441 u 12 '8 8 No pho 8 7 o 45 t< 'graph. 107 "9 82 33 tograpb. + 21 12 18 ('4 9 3 <: 4 4 o 78 77 76 7 tl 5 '3 '3 8 265-5 2657 265-9 266-0 266-0 266-3 266-4 266-5 266-4 267-1 - 8-4 - 8-3 - 8-2 - 8-1 - 8-1 - 8-0 - - 7'4 Iff -73-9 60-0) 46-0 -32-4 -23-6 - 5'3 + 7'9) ' Iroup 1315. Two spots. -(-21-0 + 3^-6 + 46-1 Mar. 10-566 II-22K o 45 H o 59 47 6-8 6-2 -12 < 121 + 68-4 + 76-6 Menu?. 7 4i 266-18 - 7-83 ... Means o 53 6-50 12'2O 222 AREAS AND HELIOGRAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. AH MII Latitude of Group. Longitude from Central Meridian. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Umlira. Whole Spot. Group 1316. A small spot. Group 1320. A regular spot. 1884. d Mar. 10-566 16 o 8 o 286-9 o - 9-9 o -11-5 1884.,, Mar. 11-288 12-593 13 I4-577 15-463 16-441 17-503 18-438 '9 "474 20-439 21-476 22-238 23-553 3 21 No pho 24 44 37 44 36 48 28 2 5 16 10 36 107 tograph. 248 223 232 220 21 1 28 4 236 'S3 10 7 5 9 23 ('9 15 24 '9 22 18 27 '9 21 I? 2 9 114 117 '35 '53 124 118 I IO 109 160 '54 127 117 H5 207-6 207-6 208-1 208-5 208-5 208-6 208-5 208-6 208-2 208-7 208-0 207-9 208-3 - 9-8 -82-0 Means 8 286-9 - 99 - 9'9 - 9-8 -5"5) -37-0 Group 1317. A small spot on March 10 and n ; it rapidly increases in size, and on March 12 is composed of seven spots in a compact cluster. This has broken up into two well-defined clusters, a and 6, by Marcli 14, and the separate spots have coalesced to form two spots by March 17, a showing a large proper motion in longitude. I 0-0 I O'O _ 9-9 _ 9-6 - 9-6 - 9-1 - 9'4 - 8-9 - 9-6 -25-3 -12-4 + 1-6 + 14-0 + 27-3 + 40-4 + 53'5 + 63-4 + 8ri Means 20 129 208-24 - 9-67 Mar. 10-566 11-228 12-593 '3 I4-577 i5-4 6 3 16-441 i7-53 18-438 > 9-474 o 8 31 No pho 32 97 45 16 16 o 1 1 22 I 4 tograph. 352 7 l8 360 2OO 128 8 16 ('7 17 53 27 12 5 o 7 '3 73 125 177 387 217 151 135 12 255-3 255-3 255-0 255-0 255-0 254-8 255-6 2547 256-9 252-2 -13-4 -3'2 -13-3 - 12-7 12-2 - I2 '3 -n-8 -12-3 -ii-6 -12-3 -43'' -34'3 -166 - 3-6) + 9'5 4-zro + 34-6 + 47-8 + 62-3 + 7I-3 Group 1321. Two spots. + 66-5 + 787 Mar. H'577 I5-463 4 o 68 116 3 o 82 266 312-0 312-5 -12-7 -13-1 Means 2 174 312-25 I 2-QO Means ... 16 130 254-98 -12-51 Group 132*. Four small spots, a, b, c, and d ; a number of other spots appear close to 6 on March 15 and 16, and are measured with it. Group 1318. Two very small spots. Mar. 14-577 15-463 16-441 17-503 18-438 ! 9"474 20-439 21-476 8 58 57 IOO 60 56 20 O 92 293 468 44 534 208 92 i7 6 35 3' 50 30 29 I 2 68 181 253 225 271 1 10 53 1 1 198-8 198-6 198-9 199-9 199-0 199-3 198-2 197-6 -I4-I 13-9 -467 };-2 Mar. 1 1-228 o 18 o 9 284-2 - 9' - 5'4 14-0 -14-1 22'l - 7-0 + 4'4 + l8- 4 + 29-9 + 43-I Means o 9 284-2 - 9-0 14-2 -I4-1 -14-4 -I 3 -8 Group 1319. Several small spots. The group has greatly increased in size by March iz, one small spot remains on March 14. Means 24 '47 198-79 + 14-08 but only Group 1323. A regular spot. Mar. 1 1-228 '2-593 '3 I4-577 I5H 6 3 o 25 No pho 8 12 45 tograiih. 20 15 o 13 ( 7 5 76 44 1 1 8 255-8 259-0 260-4 261-7 261-8 -17-0 -,6-3 -15-4 -14-4 -14-3 -33-8 -12-6 + 1-8) + 16-2 + 28-0 Mar. 14-577 15-463 16-441 17-503 18-438 '9"474 16 21 27 32 5 16 76 136 180 192 182 216 16 16 17 '9 26 9 74 1 06 '15 I 10 97 116 188-2 187-8 187-8 1877 188-5 188-5 + I2-I + 12-2 + 12-2 + 12-9 + I3-2 + 137 -57'3 46-0 -33'2 -19-2 6-1 Means 5 2 9 259-74 -15-48 + 7-6 TAKKN AT (tKKKNWiril, IN Isi'lA, ANI> IN MAURITIUS, IN TUB YEARS 1882 TO 1885. 223 .is ainl Helio<,'rapliic Positions of Croups of Sun Spots continued. Date. Greenwich Civil Time. Projected Ana of Area fur Group. Hm Longitude of Group. M. m Latitude of Group. Longitude In. in Central Meridian. Date. Greenwich Civil Time. Projected Area of Area for Group. M, M Longitude of Group. Mean Latitude of Group. km Central Meridian. Umbra. Whole Spot Whole Umbra. Whole Spot Umbra. Whole Croup 1323 continued. Group 1327. A regular spot, a. A second, 6, follows on March 18. Several smaller spot* (measured as one) are seen between them on March 19. b has disappeared by March ai. On March 11 a b followed by a long straggling line of very small faint spots. 4-.. Mar. 20-439 21-476 22-238 23 *4'*95 20 22 12 216 '3' 94 10 i l 7 9 i o '3 124 101 7^ 3 18 o 188-4 188-8 189-7 189-5 + '4'6 + '4'4 + 14-6 + 14-0 + '4'4 + 20-1 + 34'3 + 44-3 + 62-5 1884. Mar. 17-503 18-438 9'474 20-439 21-476 22-238 O 2 36 8 o 2 3* 128 216 140 f 60 O 4 'I o i 88 95 207 103 58 34 130-1 126-4 126-3 126-7 131-2 125-6 + '47 + '3'9 + 14-0 + 14-6 + '5'3 + "4'3 O -76-8 -68-2 M.MIIS 87 188-52 + 13-48 ... -41-6 -*3 - 3 -18-9 Group 1324. A regular spot, a ; a small spot, b, is seen near it on Man li 21, 21 and 13. Means ... 8 "4 12772 + '4'47 Group 1328. A faint spot Mi.r. 14 15-463 16-441 '"503 t-38 10 20-439 21-476 22-238 3'$5J 24-295 44 68 1 12 76 IO6 8 9 52 34 30 228 4*' I 5 * 644 653 636 608 46"! 289 253 109 f 62 60 44 I 9 64 57 46 4' 76 295 378 367 377 349 329 3*4 3'5 297 259 303 *74 '797 '79'4 '79'4 '79'4 180-2 180-5 180-3 181 -o 180-7 181-4 181-2 181-5 + 6-9 + 7'4 + 7'4 + 7-4 + 7-8 + 8-0 + 8-1 + 7'4 + 7'7 + 77 -65-8 -54'4 - 4 r6 -'4'4 0-4 Mar. 18-438 O 45 o 36 240-5 + 13-8 + 459 + 12-O -(-26-5 + 36-2 + 54'* + 63-8 Means ... o 36 240-5 + 13-8 Group 1329. A faint spot. ins ... 56 3** 180*39 + 7-48 Mar. 18-438 I 16 8 188-1 + 9'* - 6-5 Group 1325. Thre' . March 15. Four spots measured in two pairs are seen on March i4 and 17. Only one spot remains on March 18. Means ... ... 8 188-1 + 9'2 ... Group 1330. A large regular 8|t, a, followed by a number of small spots, which undergo several . .. until March 21, when they consist of two clusters, b and c, which are stable, c has disappeared by March 15 ; * by March 29. A very small faint spot is also seen following e on March 14. This spot re-appears as a small pair on March 26. M.ir. i ^463 7 16-441 12 .-503 4 18 . o 54 36 28 6 2 30 20 '4 12 207-3 2087 208-2 209-6 -'77 -16-8 -17-6 -17-0 -26-5 -12-3 + '-3 + 15-0 IB 3 '9 2O~ i Mar. 18-438 '9'474 21-476 22-238 24-295 21 I 08 '34 ,38 '5' '44 184 '45 129 77 39 '74 476 576 604 886 1025 1032 1042 874 625 77 80 81 76 76 97 86 94 74 62 3" 502 429 360 487 518 55 518 452 456 4'9 120-1 I 19-0 120-4 I2I-4 "97 120-5 121-8 122-8 I23-1 124-2 124-5 124-3 - 8-2 - 8-4 - 8-4 - 8-9 - 87 - 9'' 9-0 -74'S 61-9 -47'9 -33'' -24-8 - 67 + 4'4 + 18-8 + 32-1 + 59'3 + 7J-5 'ip 1326. : in M-ircli 16. Other small spots are seen in :u it mi March i-. Only "lie i fin March 18. Twi ~pot- .< March 19. M.ir. 16-441 18-438 '9 - 474 i o 4 8 i 32 o 3' 2 64 o 7 20 18 34 '''3 167-4 168-6 169-0 + 4'4 + 4'5 -547 -39'5 26-0 -11-9 25-311 26-294 34 28-250 29 - 8-8 - - - 8-6 - 8-2 - 9-1 1 20 167-83 + 4-48 Meai 76 460 121-82 - 8-68 224 AREAS AND HKLIOGRAPHIC POSITIONS OF GROUPS OP SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Me ' Longitude Lati of Group. ofGi 1 i Longituda from tude Central oup. Meridian. 1 Umbra. Whole Spot. Umbra. Whole S])ot. Umbra. Whole Spot. Umbra. 1 Whole Spot. Group 1331. Two spots appearing suddenly near the centre of the sun on March 1 9. On March 20 the group consists of 18 spots, extending over a considerable area. It is measured in two clusters on March 20, but in four on March 21 and 22, as it is then more broken up and scattered. On March 23 only two close pairs of small spots remain ; and a member of each pair disappears before March 24. Group 1336. A large regular spot, a, followed March 22-26 by small spots undergo frequent changes. a number of small spots. The i88 4 . d Mar. 22-238 2 3'553 24-295 25-311 26-294 28-250 2 9' 2 73 30-210 3'' 2 57 Apr. 1-280 22 58 38 63 5 2 49 '5 '4 22 '95 292 361 360 39 335 3 2 8 312 258 219 129 48 57 2 9 40 28 2 5 20 9 9 10 21 48, 2 8 3 277 223- 212 170 166 164 150 '53 123 o 65-0 I 677 -I 67-8 -I 68-2 -i 68-9 -i 69-7 - 1 69-9 i 69-8 i 70-2 i 70-4 -i 1884. Mar. 19-474 20-439 2 1 -476 22-238 *3'553 24-295 1 6 60 44 35 12 O 92 276 259 146 4" 10 8 33 26 2 3 10 48 148 150 9* 36 1 1 o 177-1 177-0 1777 177-1 177-5 177-9 o + 10-4 + 11-9 + 12-8 + I 3 -8 + '37 - 3-8 + 87 + 23-2 + 32-6 + 50-3 + 60-5 !-2 79-5 '4 -59'5. '3 -49-6 6 -35-8 3 22-1 'I 7'8 3-9 + 4-7 3-8 +18-0 3-9 +30-8 3-9 +44-9 3-9 +58-9 Means 17 81 177-38 + 12-65 Group 1332. A small faint spot. Means ... I 27 218 68-96 i I'll Group 1337. Mar. 20-439 O 8 5 204-3 -13-3 +36-0 Means o 5 204-3 -3-3 Three pairs of very small spots on March 23 ; two single spots and one pair on March 24. Group 1333. A small spot. Mar. 23-553 24-295 4 6 62 43 2 4 34 2 5 '437 +' 142-6 +i z'4 +16-5 27 +25-2 Means 3 3 '43-I5 +' '55 ... Mar. zo'439 8 20 4 IO 155-6 -.5-6 -12-7 Group 1338. A small faint spot. Means 4 10 155-6 -15-6 ... Group 1334. A small spot. Mar. 24-295 3 7 i 4 125-8 + ( )'9 + 8 '4 Means ... i 4 125-8 + ( )'9 Mar. 2.1-476 4 2 5 2 '4 176-0 + 6-6 + 21-5 Group 1339. A regular spot. Means 2 '4 176-0 + 6-6 Group 1335. A small spot. Mar. 24-295 26-294 2 7'3'4 o IO 6 o 2 4 48 22 5 o IO 4 o 4 2 5 17 n 45' 2 + < 44-9 + < 45'3 + < 45'3 + < (-5 -72-2 1-6 -59-1 l'5 -457 r5 -3 2 ' 2 Mar. 21-476 o IO O 5 143-0 -18-7 -11-5 Means 5 '43-o -187 Means 4 28 45"' 8 + c C53 fAKK.X AT (JlJKKNWICll. IN ISI'lA, AND IN MAURITIUS, IN THK YKAKS 1882 TO 1885. Areas ami IIelin^r;ij>liic Positions of (iroup of Sun Spots continued. D.I.. Grwn uc-h Ciril . 1'roj, Area of Arr i ' 'I'- M. itlldi- ..Up. M,-an Lat of Group. itud. !r..i:i ,tral Mi-iidi.in. Dnte. Greenwich Civil Time. Projected Area of Area for Grtnp. M a Ixmgitude of Group. Mr.il latitude of Group. I.Mlillitildn ral Meridian. Umbra. Whole ll ml >r*. Spot Umbra. \V! Spot. t'mhra. Whole S|-,t. ;p)U|i 1340. A very small spot. Group 1343 continued. 1884.,, Apr. 4-507 5'35* 6-203 7-280 196 2|6 >*4 7 2143 1895 1289 160 158 *43 *4' '9 1706 2005 2246 5*' o 207 20-4 21-1 IJ- o lO'I lO'O 10-6 -n-8 O + 51-1 4-62-1 + 74" + 82-3 1884. , V 8'3 + 3'-8 Apr. 1-280 2-413 3'*34 '7 6 2 55 69 n 10 5 2 33 5* ii 44'3 45-3 46-9 I2'2 12-1 I2'O + 32-2 +48-2 -|-6o-6 - 7'' - 6-9 Means ... 6 3* 45'5 I2'IO ... Group 1345. A very small ipot. Menus 3 26 43-67 - /'* ... Group 1 342. A large regular spot, a, followed April 1-4 by several very small spots. Apr. 1-280 5 o 3 45-5 -18-1 + 33-4 Mar 29-273 30-210 3'' Z 57 Apr. 1-280 2-413 3^34 4"507 5'35* 6-203 7-280 9-5 6 7 4 8 30 38 24 36 '4 20 3 8 18 4 61 '39 220 *5' 232 2IO I6 3 '53 '33 83 69 7 1 1 10 Z 5 *4 '4 '9 7 10 '3 6 '5 6 '54 '74 180 63 128 108 82 80 75 55 59 4 33*'3 33*'* 33^5 33*'5 33*'6 333-8 333-9 334-o 334'* 334^ 334-2 333-8 - 8-8 - 9-0 - 9'' - 9-1 - 9'' - 9'' - 9'3 - 9'3 - 9'4 - 9'i - 8-1 - 8-8 -79'5 -67-2 -53-0 -39-6 -*4'S Means ... ... o 3 45-5 -18-1 Group 1346. A regular spot. -12-5 + 4'3 -H57- + 27-1 + 4'"S + 54-5 + 7'-' Apr. 2-413 3'*34 4'57 5'35 Z 6-203 7-280 If IO 1 2 5* 77 7* 88 36 '5 6 17 7 14 3 77 74 49 5* 'S 286-0 87-2 287-2 287-4 287-4 287-1 -14-6 -14-6 -14-2 -'4'4 -14-4 -'47 -71-1 -59-1 -4'4 -30-9 -'97 - 5-8 Means '3 108 333-37 9-02 ... Means ... ... 8 47 287-05 -14-48 Group 1343. Three small spot* close together, followed liv a fourth at a little dM n.i , <>n M.n. h ji. The group increases in size rapidly, and on April i consists of a very large regular spot, o, followed by several spots of various size* close together. These ;-n'l to coalesce, and on April 3, 4, and 5 consist of one large spot ot irregular outline, A, with two sni.ill *|K>tg de to it, which are measured with it. The large spot, 4, divides in two parts on April 6. Group 1347. A Urge regular \,t with two well-defined nuclei. Several very small faint spoU are seen near it on April 6, 7, and 9. Apr. 2-413 3'*34 4-507 5'35z 6-203 7-280 8-273 9 59 104 in 1 06 83 78 208 15 3r l8 4"3 334 6o 337 28 5'3 812 72 565 801 66 477 285-6 718 57 389 I8 4'9 627 42 319 285-1 617 40 314 ;-2 i ro - '"3 - ''5 - ': 2-0 - 1-6 - 1-7 -72-8 61-0 -43'9 -3*7 22 I - 7-8 + 5'5 Mar. 31-257 Apr. 1-280 2-413 3^34 4 4- M 1 06 35* 1581 2486 2 *4 98 251 53 i-- 863 , 4 K 4 i-; 18-9 19-4 '97 9-9 8-0 9-8 + 6-8 - 97 +22-3 -io-i +33'4 PHOTO- HRLIOORAPHIC RKBUI.TS. 1882-18SS ** 226 AREAS AND HELIOGRAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Group 1 347 continued. Group 1351. A very large spot. Some small spots, measured as one cluster, appear near its preceding edge 01 April 9. These are measured with the principal spot on April 13 and following days. i884. d Apr. 9-567 10-587 11-316 12- '3-415 14-282 74 27 52 No pho 6 o 474 221 229 !tograph. 62 21 40 17 38 (24 9 257 137 164 131 98 103 o 285-2 285-3 285-4 284-8 284-2 285-6 o - -3 - '4 - '9 - '9 - '9 - '9 o +22-5 +36-1 + 45'9 + 59'') + 72-3 + 85-1 1884.4 Apr. 3-234 4'57 5-352 6-203 7-280 8-273 9'5 6 7 10-587 11-316 12- I3-4I5 14-282 8 53 77 122 II 9 I2 4 '55 188 180 No plic 74 47 '5 I/I 423 699 890 1040 1195 1078 1288 1500 tograpli 788 519 204 2 I 58 62 80 67 64 78 99 102 (83 6 4 57 40 429 463 562 587 586 619 547 68 1 856 768 680 628 540 o 266-5 266-3 266-6 266-9 266-6 266-4 266-8 267-0 267-1 266-9 266-7 266-7 267-2 -13-2 -126 -13-1 -I3'3 -13-0 -I3'I -79'8 -63-3 -517 40-2 Means 37 279 285-12 11-62 -26-3 -'3'3 + 4'I + 17-8 + 27-6 + 41-2) + 54'8 + 66-2 + 80-2 Group 1348. A regular spot. I 20 -127 -129 -12-9 -12-8 -13-0 -12-7 Apr. 2-413 3-234 4-507 5'35 2 6-203 7-280 8-273 i 12 21 30 2 4 10 7 35 79 97 no 78 25 20 2 4 16 '9 H 5 3 74 95 76 7i 45 13 10 279-6 280-0 279-6 2797 2797 279-8 280-2 -77-5 -66-3 50-0 -38-6 -27-4 -i3' + 0-5 15-295 14-4 -14-7 -14-8 -I5-4 -15-6 -5'4 -15-3 Means ... ... 67 611 266-75 12-92 Group 1352. A number of small faint spots. They undergo frequent changes. Means 10 55 279-80 -15-09 Apr. 4-507 o o 6 o o o 6 89 '39 44 67 45 119 107 72 o o 4 o o 3 ,36 133 33 4 1 24 60 54 39 258-0 259-3 258-2 258-4 259-7 259-5 259-5 260-3 14-2 71-6 Group 1 349. A very small spot. SS 2 6-203 7-280 8-273 9-567 10-587 11-316 5 -H-3 -I4-3 -I+'I -13-6 I 2 '9 sy w -48-9 -34-5 2O'O - 3'2 + 10-3 + 20-8 Apr. 3-234 2 4 i 2 327-6 -23-9 -187 -I2'3 Means 1 65 259-11 I3-78 Means ... i 2 327-6 -23-9 Group 1353. Two small spots, a and b, which tend to move away from each other ; b disappears before April 8. Group 1350. A regular spot. Apr. 5-352 6-203 7-280 8-273 18 13 4 16 47 S 2 22 o 12 7 2 H 32 30 1 1 267-1 4- 10-9 268-0 + I I'2 268-1 +I1-I 270-4 + 8-8 Apr. 3-234 4'57 5-352 6-203 7-280 8-^73 9-567 10-587 11-316 12- 'S^IS 14-282 I5-2 9 5 , 9 6 22 29 18 36 23 9 27 No pho 8 10 o 58 108 H7 182 200 229 '97 i95 140 ;oi!raph. 86 61 5 20 17 '7 '9 10 '9 12 16 (12 7 12 '23 III 116 119 H3 120 101 I0 5 8! 79 76 78 '3 268-5 268-4 268-1 268-1 267-9 268-0 268-1 268-3 268-3 268-0 267-8 268-1 267-6 -17-7 -'77 -18-1 -18-0 -I 7 -8 -77-8 -61-2 -50-2 -39' -25-0 51 2 -39' 1 -24-8 - 9'3 Means ... ... 5 22 268-40 +10-50 ... '7 5 -16-5 -16-3 -16-6 i 6-4 -16-2 -16-5 -i 6-6 117 + 5-4 + 19-1 + 28-8 +42-4) + 55'9 + 67-6 + 80-6 Group 1354. Three small spots measured together. Apr. 6-203 7-280 5 i 3 9 6 i 36 7 243-8 244-3 + 10-3 + IO'O -63-3 -48-6 Means ... 13 95 268-09 -17-07 Means ... 4 22 244-05 + 10-15 TAKES AT GREENWICH, IN INDIA, AND IN MAI-KITIUS, IN Tific YKU;S issj m 1885. U27 is ;iixl IMi'>'.-.r.i-ilii.- 1'nsitions of Groups of Sun Spots contir Data, Greenwich Civil Time. Pmj. Are* of Area for up. Ixjnci-U'l.- :"llp. latitude Longitii'l. from Central lian. Date. Greenwich Civil Time. 1'rojected Area of Aiva for Group. M. H Longitude of Group. \:. Latitude of Group. 1/ongituiU from Central Meridian. Umbra. Whole Umbra. Whole Spot. Umbra. Whole 8|K>t, Umbra. Whole Spot ip 1355. Tro small spots, a ami 6, whii-h an- ni<-axnrrn April 8. On April 9 only a remain- 9 -poU are seen close to ami lullowin^ .' on April 10 ami 1 1. Group 1358 continued. 1884.,, Apr. 14*282 15-295 16-389 17-280 18-287 19-486 20-196 *''474 22 34 26 78 53 48 39 o 7* 185 54 276 443 474 5'4 105 12 18 4 43 34 39 42 o 93 95 80 154 284 401 557 264 182-4 182-4 182-6 183-2 183-5 183-4 183-* 183-0 o + 8-4 + 8-4 -1- 8-5 + 8-8 + 9'3 fio't + lO'O + 10-0 -IS-I - 46 + 10-0 + 22-4 + 35'9 + S'7 + 60-9 + 77'5 |88 4 .< Apr. 6-103 7-280 8-273 9-567 10-587 11-316 12' ' V4'5 14-181 5 4 10 s 7 33 No pho 4 2 26 M 43 45 '47 48 tc^raph. 68 '7 B 4 6 4 '4 "7 (10 2 2 39 22 *9 *4 76 76 59 4' 12 *35'5 235-5 238-9 2429 242-3 2427 242-7 242-6 243-2 -18-1 1 8-0 -18-1 --6 -17*8 -,7*6 -177 17-8 o -71-6 -57-4 408 -19-8 - 6-9 + 3'2 + 17-0) 4- 10-7 .Means '9 187 182-76 + 8-87 -18-0 +42-7 Group 1359. Two small spots. Mean- ... 7 4* 240-70 -17-86 Apr. 1 1-316 o 3' o *4 191-5 + 9'3 -48-0 Two regular sj April 7, 8 On April re mea-sui Group 1356. ota, a and 6. Two or three small faint spot! nre seen near them on 9. By April n t.n-h s|H>t li.is broken up into several small spots. 13 the K r ""l' ls reprr.-euted by a close pair of small spots which 'thcr. These more apart on the following days. Means ... ... o *4 191-5 + 9'3 Group 1360. A regular spot A small spot is seen near it on April zo. Apr. 7-280 8-273 9'5 6 7 10-587 11-316 iz- 13-41; 14 15-295 '4 !! 2! N'i I'll" O o I2 5 130 58 49 62 :_! ip:.. l *3 12 9 17 5 2 12 ( 6 o o o 76 7' 30 26 35 30 2 5 25 23 261*5 260-7 261-3 261-4 260-9 261-0 261-2 262-6 262-3 -19-9 -19-9 20*0 2O-2 20-6 2O'6 2O'6 21-2 211 -3''4 19-0 - ''4 + 12-2 + *i-4 -t-35'4) + 49'3 + 62-1 + 75-3 Apr. 13-415 14-282 '5 79 81 63 53 7i 37 18 24 128-1 128-7 128-7 128-9 128-5 128-7 129-1 129-1 130-4 '30-3 130-5 _ 9-4 - 9-6 - 9'3 9-1 - 9'' - 9"' - 8-9 - 9'* - 8-8 - 8-5 -83-8 -71-8 -58-3 -43'7 -32-3 18-9 2'6 + 6-8 + *4'9 + 39'4 + 5'-' M. 'IMS 6 3 261-43 20-46 Group 1357. A small regular ipot. - 8-5 Means ... ... 7 55 129-18 - 9'5 ... Apr. 8'i 9-5 6 7 10-587 2 '4 4 if, o 28 4 4 o 22 1 5 '9 208*2 207-7 208-0 - 9-6 - 9' 1 - 9'3 -7*5 -55-0 -41-2 Group 1361. Two small faint spots measured together. Apr. 14-282 o 8 o 7 '44'4 - 7'5 -56-1 * 3 '9 207-97 - 9 33 Mriins ... ... o - '44*4 A regular spot, e, appear ( the whole Group 1358. a. On April 17 several other sjiots, arranged in two clusters, b and Jose to it ; a and f coalesce to form one large S[x>t on April zo, and Kroup is mainr*>) as one s|>ot on April zi. 5 Group i 362. A small spot a. A second i seen near it on April 16. Apr. 9'-,6; 10 11-316 12' 3'4'5 7 17 X<> pin i - 20 120 209 o ,6 ('3 10 69 73 "5 I2O i*4 182-1 182-7 182-5 182-5 182-4 + -4 + 8-0 + 8-2 + 8-5 + 8-7 -80-6 -66-5 -57-0 -43-3) -29-5 Apr. 15-295 16-389 17-280 8 3 o *5 *3 12 5 3 o 17 21 17 227-4 228-1 229-3 + 3'9 + 4'o + 3'3 + 4'4 + 55'5 + 68-5 Moans * 3 18 228-27 + 373 ... 228 AREAS AND HELIOGRAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. Date. Greenwich Civil Time. Projected Area of Area for Group. Meun Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Group 1363. Two regular spots, a and 1>. Small spots begin to appeal' on April 17, and a spot of some size, e, on April 18. By April 19 b lias extended itself in a remarkable manner, and another spot, d, is seen. This disappears before April 24, 6 and c disappearing before April 26. Group 1367. A small spot. 1884. Apr. 18-287 7 I 1 6 10 o 205-1 o - 9-3 o + 57-5 1884. d Apr. 15-295 16-389 17-280 18-287 19.486 20-196 21-474 22-580 2 3 - 447 24-438 25-307 26-501 23 49 75 82 77 94 76 40 '3 l l 16 I 9 I 421 443 554 871 824 644 429 207 133 U5 12 34 43 52 48 40 48 39 23 ,1 20 o 279 373 34 321 452 418 332 H3 '35 I 12 I 4 I 4 o 116-3 116-5 117-4 117-3 117-0 1 16-7 117-5 1 18-9 119-4 120-9 121 -0 I20-9 10-2 - 9-6 - 9-8 - 97 - 9-6 - 97 - 9'5 - 9'2 - 9'4 - 9-2 - 9'3 - 9-0 o -707 - 5 6-I -43'4 -3'3 -14-7 - 5-6 + 12-0 + 28-0 + 40-0 + 54-6 + 66-2 + 81-9 Means ... ... 6 10 205-1 - 9-3 Group ,1368. A regular spot, a, followed on April 19 and 20 by two other spots. Apr. 18-287 19-486 20-196 21-474 22-580 2 3 '447 24-438 25'37 o 12 o 4 28 127 84 7 S 2 4 3 o o 1 1 o o 14 65-6 37 64-2 122 63-7 55 67-0 44 66-9 27 67-0 7 67-3 2 66-8 -20-5 20-9 20-6 20-6 -20-3 20-3 -82-0 -67-5 -58-6 -38-5 -24-0 -12-4 -4- ro -f- I2'O Means 3i 263 II8-32 - 9-52 20-4 -20-4 Group 1364. Two very small spots measured together. Means ... I 39 66-06 20-50 Group 1369. A regular spot, a, followed by a second and smaller spot on April 20. A number of small spots have formed behind a by April 22. These are measured all together, or in two or three divisions, according to their arrangement, which changes greatly from day to day. Only a remains on April 29. Apr. 15-295 i o '9 o IO '74'4 -22-8 -I2'6 Means 10 '74'4 -22-8 ... Apr. 19-486 20-196 21-474 22-580 23-447 24-438 25'37 26-501 27-217 28- 29-458 30-423 May 1-314 o 36 40 4' 33 79 101 103 62 No pho 62 6 o 47 144 206 33 5'i 476 556 5'5 481 tograph. 165 118 52 46 31 2 5 18 40 S 2 55 36 (48 60 10 o 99 200 158 206 282 2 45 284 274 277 219 161 183 189 54-6 52-9 56-0 55-2 55'i 56-0 56-6 57-2 57-8 58-3 58-8 58-6 58-0 -14-4 77 ' Group 1365. A small faint spot. - 13-8 -13-6 -14-1 14-0 -14-1 -14-1 -14-2 14-0 -69-4 -49-5 -357 -24-3 -10-3 + 1-8 + 18-2 + 28-3 + 43-6) + 58-9 + 7'-4 + 82-6 Apr. 16-389 IO O 6 152-3 + 16-2 20-3 Means ... 6 152-3 +16-2 -14-1 14-0 Group 1366. A small spot, a, followed by several yet smaller spots ; a increases in size 17 ami 1 8, and shows considerable proper motion. The other sr disappeared by April 21. -13-8 on April ots have Means ... 32 214 56-55 -14-02 Group 1370. Three small spots on April 21. The first two spots coalesce to form a large spot on April 22, and a new spot appears on the same day. The group increases in size and has undergone yet further change by April 23. Apr. 16-389 17-280 18-287 19-486 20-196 21-474 22-580 9 ij 25 H 8 o 40 5 52 8 H4 '3 '7i 13 H4 4 51 o 21 26 29 74 90 79 33 J 7 136-8 138-7 140-0 139-1 140-9 141-8 141-9 + 9'3 + 8- 9 + 97 + 10-4 + 10-4 4-10-6 + 10-4 -35-8 22-1 - 7'6 + 7'4 + 18-6 + 36-3 + 51-0 Apr. 21-474 22-580 23'447 24-438 8 i 102 83 482 75 45' 18 148 5 69 103 37 64 398 566 289 143-' 143-8 146-3 141-9 - 87 - 7-9 - 7-5 - 9-3 + 3/-6 + 52-9 + 66-9 + 75-6 Means 6 5 i 139-89 + 9'9 6 Means ... ; ... 54 329 H378 - 8-35 TAKEN AT GKKKN WIUI, IN Ixi'IA, AND IN MAURITIUS, IN TI1K YKAKS 1882 TO 1885. Area- ,incl Hflio^ruphir Positions of (Jroiijis i.f Sun S|.ots -emit in- Date. wioti A magnif'trent ablr nailer Oi' will, th-- i Ar l-inl.ni. rcted Whole Spot. A.ei Umbra, i for .up. M-an of Group. M, latitude of Group. Ixingitude frmn Central Meridian. Date. Onenwii-li ( 'ivil Tim.'. Projected Area of Area for Group. Mean of Group. Mean Latitude of Group. Ixjngitnde from Central Meridian. Whole S|-.t. Umbra. Whole Rpot Umbra. Whole Spot. uronp compowd of a Tery ice by :i- spots, whi' 1. u-'.ti-rgogrrat r t ii Miiall sjHitit i ] ' '37'- ai ge ragular spot, a, followed at a oonaider- , with which it is connected by a stream changes ; 6 has broken up before April 19. ire sren in advanc-e of a. The entire group, ired by May a. Group IJ74- A small spot, o, which has disappeared by May 5, when another small spot, t, appears. 88 4 . d May 1-314 2-448 3-553 4-5*4 5-445 6-417 O O O 6 O o '4 48 O O O 4 o 21 *4 *5 3* 16 8 o 164-5 264-1 164-7 265-0 260-9 260-8 ll'l 10-9 - 9-9 10-6 - 9-8 10-0 o -70-9 -56-2 -41 1 -27-9 -19-9 4-,, \l>r 21-474 ;8o *v 25-307 29-458 30-4*3 May 1-314 2-448 I 3 8 "3 *39 384 344 34* 138 74 87 50 o 680 "43 2366 2162 togrtph. '57 1180 845 33' 97 140 166 94 163 **7 180 (128 79 48 65 o 578 81 ; '1002 1276 i'77 1239 1 106 989 872 760 665 434 353 o 26-2 252 23-9 23-0 13-0 12-8 23-1 23-2 *3'3 *5'5 25-6 27-8 28-4 - 9 -6 - 9'3 -10-4 -107 -10-9 1 I'2 -79-3 -65-7 -SS'J -43-3 -31-8 -16-2 6-4 Means ... 1 " 63-35 -10-57 ... 1 I/O -10-3 IO-I -10-3 12'2 + 8-5) + * 3'4 4-50-2 4-67-8 4-826 Group 1375. Two small spot*, a and 6. A third, e, appears on May 5. On May 7 the group consist* of a cluster of Tery small spot* followed by a single very small spot. Of this cluster only one spot remains on May t. May 3-553 4-5*4 5'445 6-417 7''75 8-252 o 18 o 56 4' 128 64 49 12 o o o 9 o 58 3* 83 36 26 6 144-8 *43'5 143-1 245-1 143-8 -11-7 -'3'3 -14-2 -14-2 -15-0 -158 6ro -49-4 -37-6 -236 -12-8 4- o-i Means ... 118 867 24-69 1061 Two small Group spots, a and 6 ; 6 1371. has disappeared by April 17. Means ... ... 2 40 *44'' 14-20 ... Apr. 22-580 *3'447 * 5-307 26-^01 27-217 10 16 10 3 o 88 85 103 6 5 8 2 O 47 96 56 20 '9 5 79-8 79-2 80-0 80-9 8 1-8 2O'6 2O' 2 -20-7 20-8 20-6 -20-5 i i-i - 0-2 4-I3-7 Group 1 376. A number of small spots irregularly distributed over a considerable area. The prec-eding spot increases in size, and by May 9 has become a large regular spot, a. +4''9 May 6-417 7-'7S 8-252 9-520 1 1-162 12-276 13 231 14-287 1 5-280 o '3 12 67 No plio "4 7' 3* 5 7' 73 120 619 tograph. 910 728 5*9 358 1 1 1 8 6 35 (5* 68 53 5' 5* 1 1 48 3'9 43' 54* 53' 5 5 6f *6 7 228-9 230-8 *33'' *33'9 *34'3 234-6 235-2 *347 *34'4 228-1 4-M-2 4 9'* + 9-4 4- 9-1 4 9'4 4 9' 6 4 97 4 9'4 + 97 4-10-4 -39' Mean- 5 41 80*18 -20-57 *7 10-6 4-18-2) 4-*9'4 + 447 4-7Q-J + 77'4 Group 1373. A numlicr of s|>oU closely following one another. The group undergoes striking and frequent (hang.-!., the ililTcr.nl m. ml., is imr.asing and diminishing, end breaking up from day to day. Apr. 26-501 28- 29-458 May i 314 2-448 4-5*4 5-445 6-417 7-175 o 44 4* *^9 No photograph. 33 709 60 1023 97 "'84 118 850 29 696 33 543 50 670 *7 435 " 40 (30 '9 3' 50 62 '7 *3 20 65 *57 333 409 538 609 446 4'4 373 584 55' 7'9 328-4 331-2 332-0 33*7 333-4 334'' 334'' 335> 335' 3357 -14-8 70 6 -58-3 -42-8) -27-2 -13-8 Means 34 33' 232-80 4- 9'7' -15-1 -.4-9 ~'4'5 -.4-8 -.4-8 -.4-8 16-0 -16-1 - ' 5'9 -16-5 -'4'3 Group 1377. A small spot. + 137 4-29-6 4 42-2 4-54-5 4-67-8 477> M;iy 6-417 7'75 8-252 9-520 i i -162 21 5 6 19 o 27 No pho tograph. 5 '9 5 4 o (i 2 26 16 i3 '5 '3 10 203-7 203-4 2037 204-3 204-3 204-2 4-14-0 4-12-0 4117 4-iVl 4- 1 ; 4-11-8 -64-2 40-0 -22-6 -11-8) ro M " il " S 3 ' 44* "^ -15-22 Means 2 16 203-93 412-80 230 AREAS AND HKLIOGRAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUOKD FKOM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Group 1378. Two small spots, a and b ; a disappears before May 8. Group 1382. A small regular spot, a, followed by a stream of very small faint spots, which disappear by May iz ; a moves rapidly forward between May n and 12, and after May 12 it moves slowly backward. Another spot appears near it on May 14. 1884. May 7-175 8-252 7 4 47 12 4 3 28 9 o 290-6 290-4 o - 4-2 - 4-2 o +327 +46-7 1884. d May I I '1 62 12-276 13-231 14-287 I 5-280 6 6 4 6 66 '9 45 47 68 I 4 5 4 9 36 12 34 48 1 12 o 220-8 225-3 224-6 223-4 222-4 o + 11-5 + I I'D + I0'3 + IO'2 + 9'4 o + 15-6 + 34'8 + 46-8 + 59'5 + 7i7 Means 4 !9 290-50 - 4-20 Group 1379. A small spot. Means 5 48 223-30 + 10-48 May 7-175 8-252 3 33 18 o 2 43 '4 191-8 193-1 + 9-' + 8-6 -66-1 50-6 Group i $83. A small spot, a, followed by several vei-y small spots ; a disappears before Alay 14. Means ... I 29 192-45 + 8-85 ... May 11-162 12-276 13-231 14-287 15-280 1 1 o 3 o o 3' 78 39 64 34 8 2 O 22 48 22 33 18 i6rz 158-8 59'4 158-3 157-6 + 12-3 + 12-1 + I2'4 + I2-I + 12'4 Group 1380. A number of small spots which undergo great changes from day to day. -44 -31-7 -18-4 - 5-6 + 6-9 May 7-175 8-252 9-520 io- 11-162 12-276 13-231 14-287 15-280 16-281 IO IO No pho 46 34 24 18 7 5 96 118 124 tograph. 478 428 264 '53 48 23 O 10 (16 25 18 12 10 4 4 190 121 88 176 263 221 137 8 4 3 '7 183-1 1837 '83-5 184-0 184-4 184-8 185-1 185-4 185-3 185-8 + 9' + 8-2 + 8-8 + 7'9 + 7'o + 6-3 + 6-3 + 5'4 + 5-o + 6-2 -74'8 60-0 -43 '4 -32-0 -20-8 - 57 + 7'3 + 21-5 + 34-6 + 48-3 Means ... 2 29 159-06 + I2-26 Group 1384. A small spot. Mav 11-162 12-276 o 4 16 16 4 29 16 132-4 132-2 + 6-4 + 6-6 -72-8 -58-3 Means ... 2 23 132-30 + 6-50 Means 1 1 '33 184-5! + 7'i ... Group 1385. A regular spot. Group 1381. A very large, regular spot, a. Small spots are seen near it on May 17, 14, 15 16 and 19. May 1 1-162 i 12-276 13-231 8 14-287 1 1 15-280 o 16-281 : o 12 4 45 36 16 '4 2 9 7 7 o 4' 5i 39 24 9 7 1237 123-6 123-6 123-9 124-1 I2 4'3 - 8-5 -81-5 -66-9 -54-2 40-0 -26-6 -13-2 May 9-520 10- 11-162 12-276 13-231 14-287 15-280 16-281 17-273 18-147 19-293 20- 21-303 17 No pho 144 ,56 218 226 221 259 1 66 178 139 No pho 29 204 tograph. 79 I 1006 1090 1 176 1229 1153 1028 900 818 tograpli. I 7 6 27 (72 117 98 122 116 I 1 I '35 95 116 121 (I0 9 9 6 337 488 639 633 609 604 617 604 588 588 716 646 576 '54'4 154-0 153-6 '53'5 153-0 '53'3 '53'* 152-9 '5^3 152-6 152-6 152-6 152-5 - 6-0 - 6-9 - 7'8 - 8-0 - 7'8 - 7'9 7 "7 -72-5 -62-0) -51-6 -37' -24-8 10-6 + 2'5 + 15-4 + 28-0 +39-8 + 54-9 + 68-2) + 81-4 - 8-4 - 8-5 - 87 - 8-8 - 8-6 Means 4 29 123-87 - 8-58 - 7'4 - 7'7 - 7'7 - 7-2 - 7'6 - 8-0 Group 1386. A small spot. May 12-276 o 9 o ii 254-8 + lO'O + 64-3 Means ... I0 3 588 153-12 - 7'5 2 Means 1 1 254-8 + I0'0 TAKKX AT (iREENWK-ll, IN INI-IA. AND IN MAI'KITIUS, IN THK YEARS 1882 TO 1885. is inul H>lio'_'ra]ihic Positions of Groups of Sun Spots C about Mi number, s whole nut Projected Area of Area fr Group MM Longitude ofQroup. Mean Latitude of Group. Longitude Iriim Central Meridian. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude ofQroup. Mean Latitude of Group. Longitude froni Central Meridian. I'mbra. ffholi Umbra. Whole Spot Umbra. Whole Spot Umbra, Whole Bpot Group 1387. its close together on May n. The group diminishes in size until \ 14, and thru increases. It undergoes continual change in the ize, ami arrangement of the spots composing it. It is measured as a 16. Croup 1390. A small s|t. ,884.,, May 16-28, 17-173 l o IO , , 4 o 35 H 55-8 57'' V - 3-9 - 3-7 -817 -67-1 |8S ; ,1-276 ,323. 14 i ;-z8o 16 7 ' 18-147 O O O "4 o '9 9 3 36 7* 68 ,8 o o o 9 10 5 7 20 47 57 ,8 '737 I7S1 172-9 '737 177-4 176-4 '74'5 A + 6-6 + 7'4 + 5-9 + 6-0 + 6-9 + 6-0 + 6-5 o -168 - 4-5 + 9' + 23-0 4-39'9 +$! + 6,7 Mi ana ... * *5 5 6 '45 - 3-80 ... Group 1391. Two small spots, a and 6. They move rapidly apart, and b disappears before May 19. , *3 174-56 + 6-47 ... May 17-273 ,8-147 ,9-293 7 I 3' 4* 7 S to 33 9 158-2 159-6 ,6-o + 137 + 13-3 + i*7 +33-9 +46-8 +64-3 A regular spot, a. So :i. :i, ami 14. Group ,388. me very small spot* are seen near it on May 17, 18, Means ... 2 21 159-93 + '3'*3 v i;-2o 16 28, 17-173 ,8-147 19293 20- 21-303 22-314 IDll 4*573 *5 '44 26-231 7' 7 2 4 33 4' So No pho 68 70 5' 40 34 9 3 56 ,36 248 301 335 togmpb. 382 367 s 260 ,83 1 1 1 4' 7 27 *7 *7 *7 (30 34 37 3* 3 3 '4 12 >*7 '55 '97 ,94 ,83 ,87 ,9, 95 ,68 198 ,64 ,68 ,46 73'5 73-6 73-6 73-6 74'4 74'7 75-0 757 75'4 76-2 76-6 76-5 76-0 -77-2 -63-9 -507 -39-2 ~ 2 3'3 - 97) + 3'9 + ,8-o + 31-0 +48-4 + 56-3 + 707 + 82-0 2-2 2'O - 17 - '7 - '7 2', - *"4 - *'4 - 27 - 3'' - 3'' - 3'o - 3' Group 1392. A spot of irregular outline. It has broken up into a number of small spots by May 21. May 17-273 ,8-147 ,9-293 so- 21-303 o 7 7 No pho 2 49 .8 tograph. 70 6 (4 i 2* 60 85 62 38 49'4 497 50-7 51-0 51-2 - 4*3 - 3'3 - 4'i - 4'3 - 4 - 4 -74-9 -63-1 -47-0 -33-5) -19-9 M.-ans 26 '75 74'9 8 - 2-39 ... Means 4 68 50-40 - 4-08 ... Group ,389. Two regular spots in contact with each other and measured together ; the smaller spot (limit ami breaks up before May 24, disappearing before May 16. Several small spoU are seen near the large spots on May 19-15. Group 1393. A regular spot It shows a large proper motion in longitude between May 19 and 30. May ,6-281 I7-73 ,8-. 47 ,9-293 20- 21-303 22-3,4 23-3,8 H"S7J *5''44 26-23, 27-123 28-294 '9 '34 28 25, 46 340 73 54 No pho tngraph. 96 554 ,32 849 88 522 40 322 54 33" 24 181 14 ,25 4 33 39 3' 38 47 (49 5i 69 5i *5 37 21 9 '9 276 *79 176 320 304 187 439 301 '97 2 < 9 ,63 ,67 ,56 6,-4 61-5 6, -6 6,7 6,- 4 61-1 62-0 61-1 60-5 6,7 61-2 6,7 62-6 -'4'4 -147 -'47 -,5-2 -14-9 -14-6 -14, -13-9 -'3'3 -13-2 -'3'3 -I3-3 -ii-6 -76-, -62-8 -51-2 36-0 -23-0) lO'O + 4-3 + 167 + 3*7 + 4' '4 + 55-4 + 677 + 84-0 May 18-147 19-293 20" 2,-303 22 3,4 23-3,8 *4-573 5' 1 44 26-23, 27-123 28-294 29-155 30-564 H 47 Xo pho 84 IOO 98 90 131 98 84 58 40 57 235 togi ph. 409 483 489 437 480 477 409 3*5 2,9 99 65 65 (62 59 58 y 66 54 S 43 *75 328 3S 281 279 277 223 H4 263 252 * 5 < 236 220 28-6 287 287 28-6 28-8 28-4 28-6 29-1 28-9 29-0 *9'4 2 9'3 24-8 - 9'9 - 9'9 - 9'9 - 9'9 - 9-6 - 9'4 - 9'3 - 9-5 - 9'4 - 95 - 8-0 - 87 -84-2 69-0 -55-8) -4*'5 28-9 ,6'o + 0-8 + K-8 + 23-, + 35'0 -r-50'8 + 62-1 + 7*>'3 ins 38 261 61-50 -'3-94 Means ... 5* 265 28-53 - 9'3 ... 232 AREAS AND HELIOGRAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Menn Latitude of Group. Longitude from Central Meridian. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Group 1394. A regular spot, a. A few small faint spots are occasionally seen near it. Group 1396 continued. 1884.,, June i -2 1 8 52 2' No pho 3-184 o 600 tograpli. 96 35 (18 o 420 283 ,46 330-5 3307 330-8 o o -10-2 +43-9 -IO- 9 +57'l) -11-6 +70-3 1884. May 22-314 23-318 24-573 25-144 26-231 27-123 28-294 29-155 30-564 3 - >55 June i -2 1 8 6 18 17 4' 43 S 2 46 S 2 33 33 21 47 125 164 232 287 261 280 273 211 207 124 18 27 H 3 26 29 25 28 20 22 18 149 190 137 169 I 7 6 '45 H7 '47 126 136 103 337-8 336-9 336-9 337'Q 336-5 336-8 336-6 337-1 337-6 337-5 337'o o +17-8 + 17-8 + 18-1 + 18-1 + 18-3 + 18-5 + 18-0 + 18-0 + 77 + 18-4 + 18-6 o -79-9 -67-5 -49-9 -43-3 -29-3 Means 3 294 330-25 -11-31 17 2 2'0 + 9'9 + 29-1 + 36-8 + 50> Group 1397. Means ... 23 148 337-06 +18-12 ... A regular s|Ot which decreases in size after May 25. Group 1395. A regular spot. Two small spots are seen near it on May 28. May 23-318 24-573 25-144 26-231 27-123 28-294 O 12 8 10 '3 23 38 37 22 I I o 1 1 6 6 43 27 36 27 H 6 324-2 325-1 325-0 325-1 325-2 325-9 -24-4 24-0 -24-7 -24-6 -247 -24-9 80-2 -62-7 -55'3 -407 -28-8 May 22-314 23-318 24-573 25-144 26-231 27-123 28-294 29-155 30-564 3'">55 June i -2 1 8 2- 3-I84 7 7 17 38 5' 54 43 59 to 22 No pho 46 93 204 244 293 344 35* 326 230 '97 .48 tograph. 34 3 2 9 '5 28 3i 30 22 31 24 10 17 ('4 10 202 "57 176 1 80 177 189 182 171 132 122 '13 88 62 334'' 333-3 334-5 334-3 334-3 334-5 335-4 335-2 334-2 335'z 334' 6 334-4 334-z -'5'4 -I5-3 -15-1 -I5-5 -157 -15-7 -15-8 -.5-6 -15-1 -14-7 -'4'3 -.5-0 -15-6 -83-6 -7I-I -53-3 46-0 -3I-5 -19-5 - 3'2 + 8-0 + 25-7 + 34'5 + 48-0 + 60-9) + 73-7 i i i Means 4 26 325-08 ~24-55 ... Group 1398. A regular spot which decreases in size after May 25. It divides into two portions on May 28. May 24-573 25-144 26-231 27-123 28-294 13 23 12 10 79 142 "47 1 06 77 o '7 '9 I .36 179 127 75 46 3I5-6 3I5-5 3'4-7 3I4-3 3H7 23-7 72-2 Means ... ... 22 150 334-48 -15-29 24-6 -24-4 -64-8 - S I-1 Group 1396. A large and irregular group composed of a great number of small sp>ts, which change in number, area, and arrangement from day to day. The umbra of the last spot of the group in completely hidden by the wire on May 26, and its area is merely estimated. -24-5 -25-0 -397 -23-9 Means 10 "3 3I4-96 -24-44 Group 1399. Three small spots, measured together. May 23-318 H'573 25-144 26-231 27-123 28-294 29155 30-564 3i-i55 2 3' 34 69 6S 105 153 73 "5 3'4 3'7 377 44 478 635 594 836 4 25 21 38 35 53 83 43 249 33 255 238 244 2 45 325 326 491 328-9 329-8 329-5 329-7 330-5 330-8 330-7 330-2 330-9 I2'2 -Il- 9 I2'I -II-6 -"'3 -ii 6 i ro -75-5 -58-0 -50-8 -36-1 -23-5 - 7-8 + 3'5 + 21-7 + 3-2 May 25-144 3 16 2 1 1 627 - 4-0 + 4 2 '4 10 7 10-6 Means 2 ii 627 - 4-o TAKKN AT fii:KEV\V|i-||. IN INI'IA A\l> I\ MAI'UITirs. IN IHK YKM;.-. IS^'J I,. 1885. 281 Areas ami H'-li' jrajiluf l*'>~itins f tip'tiin <>( Sun Spots continued. i for Area of up. Mran Mean Longittnli- Date. Area of Area for Group. Mean Mean Longitude Loagitvde of Group. Latitude of Group. Central Meridian. Greenwich Civil Time. Longitude of Group. Latitude of Group. Central : Civil Time. L - mbri Whole Umbra. Whole Umbra. Whole S|K,t. Umbra, Whole S|K,t. 1400. Group 1404. ill spot on M iv 2 ; It increases in size, and other spots ap|n-ar, until on May 1$ and thr r days the group consist* of two large regular spots, a and ''. nr t- Mwfeu ih.-iu ; b has disappeared by June 3. A regular spot, a. Several very small spots are seen near it on June 3, 4, and n. On June n theeate measured with the principal spot. 1884.,, May 30-564 31-159 o 1 1 102 127 16 '55 '77 *357 -'4'3 232-4 -17-2 O -72-8 -68-3 f-,. 144 26': 44 o 5 6 330-1 326-6 + '4'9 + '47 o -50-2 -39-2 23 63 28-294 150 29-155 142 30-564 -6 31159 4' 204 826 868 33' 36 79 M "9 437 4;? 200 326-5 3*5-4 328-1 328-0 330-3 + '5'4 + '47 IT 3 + 16-1 + '6-3 -*7'5 -13-2 + 0-9 + '9'5 + 29-6 .flllli) I'2l8 2 3 184 4-321 21 No pho 5' 43 No pho 188 tograph. 306 308 tograph. '9 30 (30 166 '73 180 ,65 '73 232-6 -17-3 232-5 -16-7 232-4 16-1 232-7 -15-9 232-5 -159 -54-0 -41-1) -28-1 -12'8 - 0-7) June 1-218 32 177 23 - 3-184 4 26 130 89 47 33''3 332-6 + .6-3 + ' 5'* + 14-0 +447 + 59'') + 73'4 6-18; 7-167 8 Q OQ O 1 No pho No pho 338 360 tograph. tograph. 37 35 (26 18 180 206 170 '34 232-4 231-8 231-2 -15-9 -15-6 ~'5'5 -15-3 - + 114 + 24-6 + 5'-6) Mean* 173 329-28 + 15-29 10 "434 No pho O tograph. ( 9 98 62 230-6 230-0 -15-2 -15-0 + 65-1) *- ... 21 '57 232-24 -15-84 ... Group 1401. A very small spot. May 2ij-i ;; o 7 5 289-7 -16-7 -37'5 Group 1405. Ueani - 2897 -16-7 A regular spot, (i. It divide* into two parts on June 3, but these are still measured together. A very small spot is ecn near a on June 3. May 31-159 5 22 '5 64 220-9 -17-7 -79-8 Group 1402. Two very small s|K>ts measured together. Juno 1-218 2 9 Xo pho 58 tograph. 1 1 ('7 68 9' 222-8 2227 -'77 -16-8 -63-8 -50-9) 3-184 34 '73 22 "4 222-5 -15-8 38-0 May 29 i;; o 1 1 o '4 *594 - 7-8 -67-8 4-321 170 '3 ('7 96 at 223-0 2X3*2 -,5-8 i 6-0 -22-5 10-0) -.1 o '4 , ._.. - 7'8 6-185 38 '73 2O 9 -16-1 7-167 28 132 15 7' 2X3-6 -15-8 + 15-8 - Xo plio tagi ipb. 1 1 61 2230 -'57 + 2 9'9) 9 No pho tograph. ( 8 5* "37 -'57 +44") 10 No pho tograph. ( 4 43 "37 -'57 + 58 *) Group 1403. "'434 O '9 o 33 223-7 -15-6 + 7*'3 A regular spot, a, followed by some smaller spots. The latter June 4. have disappeared by Means ... '3 73 223-06 16-20 May 30-564 o 167 '49 ''3 + 9'4 ^9-2 31-159 21 222 *53 2369 -63-8 .III lie T2l8 40 2 X.. |.'P. 3H tograph. ' ?'' Jl 224 + 7'4 + 7'9 -49'4 -35'9) Group 1406. 3-'84 75 36, 4 '97 1381 + 8-3 -22-3 Several small faint spots. The greater number have disappeared by June 4. 4-321 23 393 i : 201 :iS'7 + 8-3 - 5 No plm tograpli. 205 2<- + 5'5) 6-i 390 4' 238-6 + 8-0 + '77 Juno 3*184 o 40 o 3* 211-8 - 19-0 -4- 7-167 70 306 4< '79 2 3 S 4 + 7'9 4- 30-6 4-321 o 1 1 o 7 209-2 -20-7 -,6-3 IIU 28 2 19 2 ;S 19 + > M>-nits o 20 210-50 -19-85 HKUOGRAFHIC Kisn.i-. <; 234 AREAS AND HELIOGRA.PHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Umbra. Whole Spot, Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Group 1407. A great number of small spots. The spots greatly diminish in size, and become much more scattered between June 4 and 6. Group 1410 continued. 1884. ,, June i 8 '9 20-589 No pho No pho O tograph. tograph. 79 (5 (3 o 68 65 62 O Q So 5 2-6 80-5 - 2-8 8o'6 3-0 o +23-6) + 37-0) + 5'3 1884.4 June 3'i84 4-321 5 6-185 7-167 '9 H No pho 22 7 365 322 tograph. 214 79 21 18 (,6 '3 3 420 2 47 184 120 40 196-6 197-0 196-5 196-0 197-7 + 9'4 + 9'3 + 9'4 + 9'4 + 9'' o -63-9 . Q. r 4 5 -367) -24-9 IO'I Means 8 75 80-04 - 2 '34 ... Group 1411. A regular spot. Means ... H 202 196-76 + 9'3 2 Group Two small spots, a and b. 1408. Only a remains on June 7. June I 1-434 12-457 13-123 14-591 '5'435 16-566 O I I 21 21 2 9 15 4* 1 06 126 '49 170 149 o 1 1 '9 13 16 8 86 H5 I 12 9 93 76 75-6 + 6-3 75'3 + 6-3 76-1 + 6-5 75-9 + 6-4 76-2 + 6-5 76-8 + 6-6 -75-8 -62-5 -53' -337 -22-3 - 67 June 6-185 7-167 8 o 35 9 5 o 21 7 251-8 2 537 + 18-3 + 18-7 + 30-9 + 45"9 Means 1 1 95 75-98 + 6-43 Means ... 3 H 252-75 + 18-50 Group 1412. A small spot. A second spot is seen ut-ar it on June 13. Group 1409. A large regular spot, a, followed by a small spot, b. Tiic latter has disappeared by June ii. June 12-457 13-123 O 5 20 16 o 3 '3 9 97'4 99-2 + 4'9 + 5'4 -40-4 -29-9 Means ... 2 1 1 98-30 + 5-15 ... June 6-185 7-167 8 9 10 11-434 12-457 i3' 2 3 14-591 5'435 16-566 2 5 3z No pho No pho No pho 56 69 49 4 8 43 2 138 249 tograph. tograph. tograph. 39 6 356 33 2 265 198 77 33 28 (28 (28 (28 28 36 27 33 36 3 184 223 217 212 20 7 201 18 4 182 I8 3 169 1 08 '53-1 152-1 152-2 152-2 152-2 '5 2 '3 151-9 152-5 152-1 152-1 '5 2 '3 - 7'4 - 7'3 - 7'i -6-9 - 67 ~.' 5 6'2 - 6-4 - 5'9 6._ -67-8 -55'7 -41-6) - 2 7'4) -J3'3) + 0-9 + 14-1 + 2 3'4 + 4 2- 5 + 53'6 + 68-8 Group 1413- Two small spots. June i4'59i 2 9 H 107-9 + 7'5 - '7 Means H 107-9 + 7'5 6 4 o Group 1414- A regular spot. Means ... 28 188 152-27 ' 6'6o June 14-591 I5-435 16-566 '7 18 '9 20-589 21-475 22*090 2 3'433 24-549 25-598 o o 21 No pho No pho No pho 53 43 40 3 2 '7 5 9 55 149 tograph. tograph . tograph. 2 5 6 2 35 225 193 117 88 O O 18 (20 (22 ( 2 5 2 7 22 22 21 '3 7 2 3 76 126 127 128 130 131 123 124 128 1 02 119 307 30-6 37 30-9 31-1 3i-3 3i'5 31-9 3 2 '9 32-3 Ji'l 31-5 - 8-0 - 7'9 - 7'9 - 7'9 - 7'9 - 7-8 J O - 8-6 - 7-8 - 8-6 - 8-5 - 9'4 -78-9 -67-9 -52-8 -39'3) -25-8) -i 2 '3) + 1-2 + 13-4 + 22- 5 + 397 + 54-0 + 67-6 Group 1410. A regular spot. June 11-434 12-457 13-123 14-591 I5-435 16-566 '7 2 1 I 18 18 3 2 21 No phi 4 2 85 109 148 170 149 tograph 3 10 13 1 1 '7 1 1 ( 8 68 81 83 8/ 90 75 7 2 79-5 - 2-1 79-3 - i'9 79-8 - 2-1 79'7 - 2'2 79-8 - 2-1 80-3 _ z-2 80-4 - 2-4 -71-9 -58-5 -49' 3 -29-9 -i 8-7 - 3' 2 + 10-2) Means 16 1 1 1 3i-43 - 8-18 TAKKN AT (iKKKNWICII. IN I.M'IA, AN!' IX MAURITIUS, IX TIIK \'KA1:S 1 SS'J TO 1885. is ami Helintjr.-iphir I'nsitioiis of Croups of Sun Spots continued. IVi;-. Grveunkh Time. 1'rojected Are* of Area for Group. M. Longitude of Gioup. MMB Latitude of Group. Longitude from tral Meridian. Date. Greenwich Ciril Time. 1'roj. Area of AVea for Group. M. a Longitude of Group. M.-an Latitude of Group. Longitml. from Central Meridian. Umbra. Who!.- Umbra. Whole S|HU. Umbra. Whole Sp,.t. Umbra. Whole >;..!. "-P '4' 5- Two small spot*, a and l<. b has diaapiwarrd by June 11, a l>y June a). A small ipot is, however, seen near its place on June 13. limil]. 1419 rnntitlWxl. l88 4 .,, June 29-430 30-486 July i 2 3-335 4-243 5-366 6 7 8-348 8 | 96 No pho NII plin 1 60 85 No pho No uho 6 646 750 tograph. tograph. 75 1058 795 tograph. _! . pi 35 54 53 (56 (60 63 95 01 (60 (58 57 4'3 419 4' 5 4'2 408 630 574 500 4*7 353 o 237-5 237-6 237-9 238-1 238-4 236-7 237-8 2389 240*1 141-3 b -11-5 -117 12-2 -127 -13-1 -47 -13-9 -13-9 -13-9 -13-8 -i2 21-6 - 8-8) + 4-i) + 16-9 4-27-2 + 43'' + 57'4) + 71-8) 4-86-1 i8> llMlt! 20-589 "'475 22-090 3 o o 99 2 i 33'* 12 6 12 ~ 36-2 5 34'2 - 3'5 4- 2-9 - 5-4 4-16-8 - 5"' 4-25-8 - 5-9 +41-6 Mi- i: - i 17 34-73 - 4-98 ilroup 1416. A number of small spou in a long irregular stream. The following portion of the stream ha> di>appeared liy June 14. Menus ... 55 428 238-27 12-70 June 20-589 21-475 2 I -090 2.V 24-549 59 8 26-500 27-452 o o 1 1 6 o 1 1 o o 73 9 J 128 118 95 214 48 '17 O 6 3 o 7 o . o 101 5' 66 60 55 4S "9 156 2-O 07 359' 6 4-8 4'5 6-0 6-7 7-3 4-13-1 4-12-9 + 12-9 + 12-2 4-12-7 -f 10-8 4-107 4-10-8 -28-3 -17-8 -10-8 + 12-2 4-26-7 4-42-1 4-547 4-67-9 Group 1420. A regular spot. June 26-500 27-452 28-404 19-430 30-486 July i 2 3-335 o 6 9 35 No pho No pho 32 '4 4 75 108 80 87 102 1 1 'graph. tograph. 98 11 o 6 6 '9 (18 (18 17 8 3 '24 109 59 53 54 53 53 S 2 42 ll 239-5 239-4 *39'5 139-7 239-6 239-6 2397 2397 2396 240-2 4-10-3 4-10-3 4- 9 8 4- 9' 6 4- 9'3 4- 9-0 4- 8-8 4- 8-5 4- 8-5 + 8-8 ~r' 5 60-0 -47-3 -33'S Means ... 2 95 3-95 +12-01 ... Group 1417. Fir* small spots arranged in two compact clusters on June 21. Other small spots are seen near these, and an measured with them on Jnne 21. The group has diminished in size by June 13. 19-6 - 7-o) 4- 5'6) 4-18-* f 30-1 4-45-5 June 21-4-; 22-090 23-+33 o o o 61 '79 45 O 4 '35 5' 57-6 57-S 55-8 -.0-5 - 9'4 -10-3 4-39'' 4-47-' 4-63-2 4 2 43 5-366 Means ... 10 62 139-65 4- 9-29 Means 75 5697 1 0-07 ... Group 1421. A regular spot on June 18. The spot increases in size on the succeeding days, and smaller spots appear following it, forming on July 3, 4, aud 5 a long stream. Crronp 1418. A very small spot. June 22-090 *3'433 o o I o 6 3 333'' 332-1 -15-6 -14-8 -37-3 -20-5 June 28-404 29-430 30-486 July i 2 3-335 4-243 5-366 6 7 8-348 9-168 : 34 No pho No pho 36 80 74 No pho N'<> pho 10 8 . 5 112 355 tograph. togiupli. 478 469 454 togiaph. togiaph 116 57 22 (21 (9 1 8 42 43 (32 (22 1 1 '4 59 90 232 236 239 243 ** 7 262 222 182 '4* 118 222-1 22I-9 219-8 22 I'O 222'1 223-3 223 -8 223 5 122-9 222-3 221-7 220-8 4-13-3 4-I3-3 + .3-1 4-13-0 4-130 4-11-9 4-13-' 4-13-8 4-13-9 4-139 4-140 4-14-6 -64-7 -5'"3 -39'4 -257) -11-9) 4- i 4-14-3 + 28-8 4-4' -4) 4-53-9) 4-66-5 4-76-5 M'-,ins ... o 5 332-60 15-20 Ur.uip 1419. A largo regular spot, ots l.y July 3. On Jnlv 4 hare become a compact cluster, and are measured together. The group the actual limb un July 8, mid only a is distinguishable. Juno 26-500 *7-452 28-404 o 4* 64 44 3" 500 46 5' *73 34 401 238-0 238-0 237-2 -iro 74-0 1 1 - 1 61-4 -11-5 -49-6 .us ... 2O 189 221-10 4-I349 236 AREAS AND HELIOGRAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mi-an Latitude of Group. from Central Meridian. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Group 1422. A small spot on June 30. On July 3 the group consists of a large regular spot, a, followed by a stream of small spots. Group 1426. A regular spot. A small spot is seen near it on July 5, and it has broken up by July 8 into a number of small spots. 1884.,, June 30-486 July i 2 5-366 O No pho No pho 52 67 15 59 tograpli. tograph. 377 343 1 60 O (3 (25 38 69 31 3 C I'3 195 278 352 347 o 264-2 265-8 267-3 268-9 270-4 271-8 o + lO'O + 9'9 i 9 1 + 9-6 + 10-0 + 10-4 o + 5-0 + 19-1) + 33-3) +47-4 + 60-9 + 77-I 1884. July 3-335 4'243 6 7 8-348 9-168 o I 2 13 No pho No pho '9 8 32 1 I 1 148 tograph. tograph. 124 44 o 16 (ll (10 10 4 89 122 103 83 64 22 141-2 140-9 141-5 141-4 141-2 o + 8-3 + 8-1 + 7'9 + 7-9 + 7-8 + 7-8 + 8-3 -80-3 -68-6 -53'2 -40-1) -27-0) -I3-9 Means 29 219 268-07 + 9-93 Means 9 91 I4I-27 + 8-01 ... Group 1423. A small spot. Group 1427. A large spot of irregn ar out Hi i-, a, preceded by a stream July 19 only one large regular spot is seen. of small spots. On June 30-486 27 o -5 236-0 + '7'5 -23-2 Means ... o '5 236-0 + '7'5 July 8-348 9-168 10-205 11-164 12-280 13 H 15 16 17 18 19-409 1 Z 45 35 28 7 No pho No pho No pho No pho No pho No pho 12 97 266 366 243 345 tograph. tograph. tograph. tograph. tograph. tograpli. 89 18 45 26 17 36 (44 (46 (49 ($2 54 149 26 7 - 26 7 I 4 6 183 213 2 4 2 272 33' 360 390 83-6 85-3 85-1 86-2 87-4 88-6 897 90-9 92-0 93-2 + I I'o + II-0 + 10-9 + 11-4 + 11-3 + 1 1/4 + 11-5 + 11-6 + 11-7 + U-8 + I2"O -71-6 Group 1.524. A regular spot, a, followed by a stream of small spots, a has bioken up into a number of small spots by July 8. -46-7 -32-6 i 8-0 - 3'4) + 11-2) + 259) + 40-5) + 55-0 + 69-8) + 84-4 July 3-335 4-243 5-366 6 8-348 9-168 32 62 5 No pho No pho 18 9 286 33 288 tograph. tograph. 101 67 24 38 27 (21 (16 10 5 | 207 175-7 184 176-1 153 176-4 120 176-6 88 176-8 55 i77-o 39 I75-5 - 4'9 - 5' -45-8 -33'4 -18-3 5-0 - 4'9 - 4'9 49) + 21-8 + 31-2 Means 39 260 87-48 +11-46 Group 1428. A very small spot. Means 20 121 176-30 5-00 Group 1425. A regular spot. July 9-168 3 o 3 I97-4 + I5-9 + 53-1 July 3-335 4-243 5-366 6 8-348 9-168 10-205 1 1-164 12-280 5 22 16 No pho No pho 34 39 21 21 18 43 IOO 144 tograph. tograph. H7 158 131 II 4 114 7 22 I 2 ('4 ('5 17 20 I I 13 13 65 9 8 IOO 92 83 75 81 7 86 151-3 151-2 151-4 151-4 151-5 151-5 151-5 151-5 151-2 150-4 - 7'4 -70-2 Mean* ... i o 3 '97'4 + I5-9 - 7'5 - 7'4 - 7'4 - 7'4 - 7'4 - 7"' - 7-0 - 6-7 -58-3 -3"0 -16-9) - 37 + 20-9 + 33'3 + 47'3 Group 1429. Two small spots measured together. July 9-168 7 22 5 17 I93-3 + 6-1 +49' Means '4 82 151-29 - 7-25 Means ... 5 17 193-3 + 6-1 1AKK IKS\VUII. IN INI'IA, AM' IN M.UU HI'S. IN I UK YKU.s ! 1 S85. 237 Atv.is ami II ^m Spots cviitii, Onenwirh Civil Tim*. i for i of Group. Mean -.up. M n lx.i. K iiu.l. Latitude Central of Group. Meridian. Date, h i'imi-. 1'HM' Area of Area for Group. Hi nf<: lull p. Mran Ijltlllnlr of Group. frniii rl Meridian. Umbra. Spot. 1' in bra. Wholo S|~,t Umbra. Whole >|> 1430. -t,"t. Group 1436. A n-gular spot. 1884., 1 1 1 64 ] :-28o O 5 66 16 36 68 43* 428 - 8-1 -- 8-2 60-3 1884. d July 19-409 20-414 21 22 *3 *4"47 25-466 26-455 27-244 2O 3' No plin No plin No plu. 33 3 28 '5 172 189 tograph. ; ' Iph. tograph. 200 '44 136 101 ,6 '9 (9 (9 (18 18 18 21 5 3' 117 H5 i'3 109 89 103 99 o 320-5 321-1 321-4 3217 322-0 3**'3 322-1 323-1 3*3-1 O - 6-6 - 6-7 - 67 - 67 - 6-6 - 66 = 8 - 6-9 O -48-3 -34'4 -20-9) - 7'4) + 6-1) + 19-6 + 33'5 + 47-5 + 58-0 ... 8 ^ 43-00 - 8-15 ... Croup 1431. Two small spots. Menus ... 18 110 32 1 -92 - 678 July 12-280 3 6 3 20 170-2 + 97 +67 i Group 1437. A regular spot on July 19 and to. It has broken up by July 14, and forms two faint spots close together. On July z6 the group consists of three very small pots. Mean ... 3 20 170-2 + 97 '!' '43*- small spots, three being close together are measured as one. July 19-409 20-414 21 22 23 5 9 No pho No pho No pho O O O % tograph. tograph. tograph. 6l 74 26 10 36 10 69 ( 7 60 ( 5 5' ( 3 4' o 32 o 39 o 15 2927 293-9 *947 *95'5 296-3 297-1 297-2 296-8 - 9-2 - 9'* -76-1 -61-6 -47-6) -33-6) in-ft 1 July 12-280 3i 9O 22 63 '45 3 10-6 +42-2 9 - 87 - 8> - 8-1 - 8-6 19 o; r.f. Meant ... 22 63 145-3 1 0-6 24-407 25-466 /; i - - 5 + 8-6 4-21-2 Croup 1433. A small 8|K>t. 20 4,, Means 4 45 *95'53 - 8-78 up 1438. mil spots, of which the two following are measured ai one. The greatly increased in sizi' by July 14, and consists of two s|ts, a and derable size and inepiUr outline. The preceding spot, a, becomes ar in .ilia|>e, ami moves forward in longitude on the succeeding days, tall spots appear between a and b. July 12-280 4 o 6 3*7 -to-? -70-4 Three very sn Means ... O 6 3*7 10-3 b, of cons: more regu Several sn Group 1434. A very sinull spot on July 19. Two small spots on July 20. July 20-414 21 22 *3 *4'47 25-466 *6'45^ O No pho No plin No plin 78 95 62 18 tograpli. tograph. tograpli. 44' 466 596 556 o (10 (20 (30 4 53 5i 47 3 67 121 '75 229 '59 384 429 310-4 310-9 3'i'3 311-8 312-2 312-3 3i3'4 313-6 - 3'5 - 3-6 - 3-6 - 37 - 3- - 4'3 - 37 - 3-8 -45'i -SI'S) -17-8) - 4-*) + 9'5 -M37 + 37'8 + 48-5 1 July 19-409 j 20-414 i 3 ' 7 o 4 7 74' 2 7+'5 + 67 +65-4 + 7'4 +79' 1 Means i 1 1 74-35 + 7-05 *7'*44 Means 31 210 311-99 - 3-75 Group 1435. A very small spot. Group 1439- A regular |>ot. July 19-409 1 i 5 47-3 + 9'* 4-38-5 July 20-414 4 19 14 67 ,72-8 + 10-0 -827 Means i 5 47 3 + 9'8 Means ... ... 14 67 272-8 -|-io-o 238 AREAS AND HELIOGEAPHIC POSITIONS OK GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Date. Greenwich Civil Time. Projected Area of Area for Group. Moan Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Group 1440. Several small spots arranged in three close clusters on July 26. On July 27 only two spots remain, and only one on July 31. Group 1444 Several small spots on July 31. The group increases in size, and on August l consists of two large spots, a and l>, with some small spots between them. 1884. July 26-455 27-244 28 29 3 3I-357 16 12 No pho No pho No pho o 78 3 trgraph. tograph. tograph. 18 10 8 ( 6 ( 4 ( * o 5 17 15 13 l l I 2 o 24'"3 240-2 242-1 244-0 245-9 247-8 o -13-4 -13-7 -12-8 -11-9 lO-g IO'O o -34-3 -24-9 - 9-4) + 6-0) + 21-5) + 37-0 1884.,, July 31-357 Aug. 1-433 2-432 3-577 4-260 5H85 36 1 I I 169 169 74 4 289 862 1183 749 618 76 20 67 114 150 92 8 155 506 812 6 7 I 773 158 o 222'6 222-6 223-5 2217 223-5 216-4 -11-6 ii'i 10-9 u-o I I'2 + I1-8 + 26-1 + 40-1 + 53-5 + 64-4 + 73-4 Means 5 20 243-55 .Means 75 513 221-/2 -11-15 Group 1441. Three very small spots on July 26. Other spots appear on July 27, and the group increases in size, consisting on July 31 of two large spots, a and b, and a few small spots between them. The small spots have disappeared by August i, and b has broken up into two spots by August 3. Only a remains on August 5. Group 1445. A few small spots irregularly distributed on July 31. The group changes rapidly, increasing in size from day to day. On August 4 the group consists of two large spots with a few small spots between them. July 31-357 Aug. 1-433 2-432 3-577 4-260 5-485 1 1 23 38 63 48 H 49 303 467 369 629 264 5 12 23 49 47 28 25 167 289 291 612 545 215-7 217-0 2I8-I 217-6 217-2 218-3 - 5-o - 4'9 - 47 - 5'3 - 6-3 - 6-4 + 4'9 + 20-5 + 347 + 49-4 + 58-1 + 75'3 July 26-455 27-244 28 29 30 3I-357 Aug. 1-433 2-432 3'577 4-260 5-485 3 i No pho No pho No pho 99 103 84 57 44 4 20 29 tograph. tograph. tograph. 877 693 389 285 240 62 3 (ij ('5 (37 49 55 51 42 4 1 8 20 23 127 232 337 441 367 231 214 228 122 215-2 2I2'2 212-5 212-8 213-0 2I3-3 213-8 215-8 2l6'2 217-4 218-4 + 47 + 3-5 + 3-6 + 37 + 3-8 + 3'9 + 3-8 + 3-i + 3'5 + 2-7 + 2-6 60-4 -52-9 -39' 1 ) -25-2) -ii-3) + 2-5 + 1/-3 + 3^4 + 48-0 + 58-3 + 75-4 Moans ... 27 322 217-32 - 5'43 Group 1446. Three spots, a, b, and c, iu a straight line, b has disappeared by August 2, and c b}' August 7. A small spot is seen close to a on August 4. The photograph oil August 5 is badly denned. Means 3 213 214-60 + 3-54 ... Group 1442. Two sninll spots measured together. Aug. 1-433 2-432 3-577 4-260 5-485 6-525 7-459 8-452 9-436 10-550 49 59 74 78 4i 39 21 23 '5 354 214 43 433 353 342 205 162 100 46 34 34 38 39 21 23 H 20 19 O 241 122 222 218 l8 3 196 137 138 127 ! 43 I53-9 154-3 156-2 156-7 156-5 1577 I 5 87 158-5 158-2 157-6 + 10-4 + 10-3 + 77 + 8-8 + 9'' + 8-5 + 7'5 + 7'4 + 7-o + 7'3 42-6 -29-1 I2'O ~ 2'4 + I3-5 + 28-6 + 4 I-8 + 54-8 + 67-5 + 8r6 July 27-244 6 26 5 23 2I3-0 - 87 -52-1 Means 5 23 213-0 - 8-7 Group 1443. Two small spots close together. Means 2 4 i73 15683 + 8-40 Group 1447. Four small spots measured in two clusters. July 31-357 Aug. 1-433 8 o 36 25 7 o 3' 33 261-9 26l-2 -I5-5 -15-2 + 51-1 + 647 Aug. 2-432 2 IO2 I 58 208-5 + 17-4 + 25-1 Means 4 32 261-55 -I5-35 Means i 58 208-5 + I7-4 ... TAKKN AT ( ! KEKSWK II, IN INI'IA, ANI> IN MAUKITIUS, IN THI VKAKS 1882 TO 1885. .itnl licit. !_va|>liii- 1'iisili : nips i.f Sim S|KI!M iiit.tutd. Date. Greeuwirlt Time. Aroa of Area for up. :"Up. ',:, . Ut. ."Up. itude Central Mrridiin. Date. Greenwich Civil Time. Projected Are* of AM Group M.au Lollgiludc lip. MMII Latitude up tilde from Centr.l Meridian. \':;.' i L Umbra. Unibm. Whole S|HJt. Umbra. Whole ip 1448. A somewhat faint -p !. ' A Miiall spot, b, appear* m>ar it on August ( disappeared hy Anoint 7, and a third *|K>t, c, spprars. Two small also seen in the noghUmtliood on Anoint to, and two on Angus they cannot be certainly identified in either cae with spots seen prev i. a has [iota are 1 1 , but i r.nip 1452. A small spot on August 7. The group increases in size on the succeeding days, and consists of a great number ol small spots irregularly distributed over a Urge srea. The group undergoes great and frequent changes. oualy. 1884.., 7H59 8-452 9-436 10-550 11-503 12-559 '3'453 4'439 15-476 '5 59 45 74 38 o '7 '*S IO2 445 584 536 730 506 202 O 8 - 45 3* 63 53 o IO 5 22 9 3*3 35' 6,3 649 618 o 86-6 886 91-4 88-9 887 89-7 91-5 92-0 92-0 o + 5-5 + 5-8 + 6-4 + 6-3 .+ 7-6 + 7'' + 6-7 + 6-6 + 6-3 -30-3 -15-1 + 07 + 1*9 + 539 + 67-$ + 8l'2 An. 4-260 $'4*5 6 52; 7^9 10-550 li 503 O O 4 2 O O o 1 35 65 rfl 2 1 33 "9 4 o O 3 I O 3 o '5 4* 5' 3' 10 1 1 16 IO 3 94-2 92-8 92'S 9I-9 9 2-| 92-O 90-9 o + 12 -2 + 12-6 + '*4 + 13-0 + '37 + 13-6 + '47 3 -74-0 -50-2 -37-2 -25-1 -i 1-6 + ''4 + 160 Means 26 3*3 89-93 + 6-48 MIM: - 1 21 9*'*9 urn Group 1453. A regular spot. Group 1449. Two small spot*. Aug. 8-452 9-436 10-550 11-503 12-559 '3-453 '4-439 '5'476 16-437 '7'545 18-594 '9 *'393 5 '4 33 33 26 37 '9 '3 '4 No pho o 45 7 53 .91 203 *45 '99 '35 126 79 tograph. 4 1 1 28 18 9 18 "7 '3 20 12 IO '4 ( 7 "9 121 1 1 1 126 110 107 81 9* 46 4 27-2 *7'4 277 27-9 28-1 *8"5 28-8 28-3 280 27-4 26-7 - 6-0 - 6-0 - 6-0 - 5'9 - 5-8 - 5'4 -76-1 -63-5 -48-6 -357 -21-5 - 9'5 + 4-0 + '7'7 + 30-6 + 44-8 + 696) + 80-8 An::. 6-52^ - 48 6 39 1787 - 8-4 + 49-6 Mi-mis 6 39 1787 - 8-4 Two *|K>u. Group Only one 1450. remains on August 7- 6*5 - 6-1 - 5-6 .MeaiiH ... '4 9' 27-85 _.. Aug. 6-525 7'459 4 58 1 5 4 o 55 10 696 -2-2 + I2'2 + 117 -59'5 -447 Group 1454. A number of small spots measured in three clusters. The clusters are Dot the same on August 15 as on August 14, or on August 17 as on August 16. Means 2 33 70-9 + 11-95 Group 1451. 1 One spjt on August 6 and 7. A second spot appears on August S, and others on August 9. The areas of the spots diminish from day to day, and on August 10 the tfroup is composed of a number of small faint spots irregularly distributed over a considerable area. Aug. 13-453 '4'439 15-476 '6-437 '7'545 21 IS 23 10 1 5* 70 '73 9' 53 II 9 11 6 i 28 37 94 53 3 *3'4 23-8 *3'9 37 23-9 10-9 -10$ -11-4 -11-3 -14-2 - 0-7 + 13-1 + 40-4 Ma*, 8 50 23-74 11-12 Au-. 6-; 2; 8-452 9-436 10-550 11-503 3 26 6 IO 3 54 76 182 *3' 69 54 6 8 '9 6 2 98 82 46 . 150 38 28 56M 557 54-0 53-8 ~ 6'3 -73-0 - 7-2 -49-7 - 7' -36-9 - 74 -20-6 - 6-4 - 8-6 Group 1455. A regular spot, a. Several small spots are seen ucr it on August 14-1*. Aug. 13453 '0 74 15 170 11 1^2 2 16 16 140 3*3-3 183 3231 136 3*3'* - 3'* - 4'* ; - 37 -74-3 61-4 -47-6 MMM 90 54-97 - 6-82 '4 439 240 ARKAS AND HELIOGRAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Group 1455 continued. Group 1459. A regular spot. 1884. d Aug. 16-437 '7'545 18-594 '9 20-393 21-378 22-432 Z 4'543 18 42 37 No pho 26 7 5 o 2O2 222 232 tograph. 203 I 5 49 22 9 1 1 23 '9 (16 12 15 5 5 125 1 2O "9 "4 108 89 35 21 15 o 323-5 323-1 323-1 323-5 323-9 323-9 324-1 323-8 3227 o - 3-2 - 2-8 - 2-8 - 3-' - 2-8 o -34-7 20-4 - 6-5 + 5-8) + 18-0 + 31-1 + 45'' + 7I-7 1884.4 Aug. 20-393 21-378 22-432 2 4'543 25-221 26-413 27-157 8 25 '7 16 12 18 I I 4 83 I 10 I 12 IOO 56 43 3 24 7 7 10 9 7 1 1 8 3 7 75 67 57 3 2 26 20 '9 o 258-3 259-6 260-2 260-2 259-5 259-6 259-7 260-0 -19-5 -20-5 -20-5 -20-3 -20-5 20'I -19-9 2O'O -47-6 -18-8 - 5'3 + 8-5 + '7'5 + 33-4 -r43'5 Means ... '3 100 323-43 - 3-17 ... Means 9 46 259-64 20-16 ... Group 1456. Two small spots, a and b. Another small spot is seen near ft, and measured with it on August 1 8. Group 1460. Two small spots, a and b. They have moved apart by August 21 ; b has dis- appeared by August 22. A third spot, e, appears on August 23. Aug. 20-393 2I-37S 22-432 1 2 2 3 3' 28 19 o 8 5 o '9 21 16 10 256-6 257-2 258-4 258-8 -'57 -15-8 -'57 -15-5 -49'3 2O'6 - 6-7 Aug. 17-545 18-594 '9 20-393 4 2 No pho 26 61 tograph. 18 6 2 O 37 55 33 1 1 272-8 273-3 272-6 271-8 + 14-0 + 14*2 + 14-6 + 14-9 -70-7 -56-3 4.5-2) -34"' Means ... | 3 1" 25775 -'5' 68 Means ... 2 34 : 272-63 + 14-43 Group 1461. A regular spot, a. Some small spots are seen near it, August 21-23. Group 1457. A small spot. I Aug. 20-393 33 21-378 28 101 22-432 12 i 1O/ 23-444 6 3 o 20 8 3 30 7 2 65 ' 7 254-0 252-3 252-1 252-0 -15-0 -'5'5 -'5'3 16-0 -51-9 -40-5 26-9 -13-5 Aug. 20-393 21-378 12 O 33 21 7 o 18 1 1 305-3 306-0 -12-4 - 0-6 + 13-2 12-8 Means 8 46 252^60 -I5-45! Means ... ... 4 '5 305-65 I 2 "60 Group 1458. A number of small faint spots on August 20. They become much larger and darker on the succeeding days, and form a long straight stream of spots followin" eacli other very closely. The stream begins to break up after August 2t The individual spots undergo frequent changes. Group 1462. A small spot. Auj,'. 20-393 o 8 250-8 19-0 -55' Means ... o 8 250-8 19-0 Aug. 20-393 21-378 22-432 23-444 25-221 26-413 27-157 4 76 '45 72 47 "5 7' 46 89 3 9 I 8l 5 697 7 8l 7 9 6 565 472 2 4' 73 38 27 69 60 52 53 206 410 356 433 480 458 53 275-5 274-2 275-9 278-4 276-7 278-4 280-4 + 2-2 + 3'3 + 4'5 + 4'4 + 4;6 -3'4 -.18-6 - 3'' + 12-9 + 257 4-34-2 + 52-1 + 63-9 Group 1463. A regular spot, a, with a larger spot, b, of irregular shape near it. b has broken up into a number of small spots by August 23. Aug. 20-393 21-378 22-432 24-543 6 24 '9 9 62 166 239 214 170 2 1 34 2 1 '3 5 220 2 35 212 '47 99 225-1 224-8 225-0 224-8 224-6 - 7-6 - 7'9 - 7'5 -80-8 -68-0 -54-0 Means ... 45 366 276-98 + 4-05 ... / - 8-4 4 / -26-4 TAKKS AT CKKKSWK-H, IN ISI-IA. ASH IN MAURITIUS, is THE YKAKH 1882 TO 1885. 241 _-ra]i!ii>' IV-itiims of Groups of Sllll S|K)ls -rmitiii' Date. .wicli Civil Time. Projected Area of Area for Group. Mean LoiigitU'lt ->H'. Latitude of Group. Longitii'lr from Central M. ri -liaii. 1'.: :wicll Civil Time. Projected Area of Area f..r Up. Mean Longitude of Group. -: y latitude of Group. Longitude from Central Meridian. Umbra. Whole Whole Spot. Umbra. Whole Umbra. Whole S|,t. Group 1463 conlinuetl. A Miiall |p(it. Aug\i>t - (iroup 1467. A second small spot in aeen near it, and meaaured with it, <>n and the succeeding nayt. 1884., 221 26-413 *7'iS7 38 '4 o "3 3 20 - o 67 61 16 o 225-0 226-4 ;-o - 8-7 - 7'8 - 8-6 o -17-1 + o-i + 8-5 1884.,, Aug. 26-413 27-157 28-447 *9'453 O I O 7 30 37 4 15 o ,1 *4 9 o 163-1 I6 S'S 166-7 167-1 o -18-1 -17-1 -17-1 -7'3 -63-2 .n- * 3 Z 225-09 8-03 -51-0 -32-8 -I 9 -1 Two Hinall s|K>ts, a on. '. liatli IIIMIV rapidly. 1464. f.'nvanl in longituilc, but a the more M runs 3 7 165-60 -17-40 Group 1468. A small |K>i. :l '43 2 ^3'444 3 4 35 '4 I 2 *5 8 243-8 -'99 -20-3 -36-3 -21-7 I 1 '7 43'*S 20-10 ... An-. 26-413 *: 28-447 *9 - 453 o i 5 o '7 '5 S '4 O 3 o 20 3 8 159-8 159-9 160-1 160-1 + 7'4 + 7-6 + 77 + 7'4 -66-5 -56-6 -39'4 -26-1 .-. : 5-22 1 o \ Group 1464*. A very *mall i|t. O 5 251-5 -18-9 + 9-4 MM:IIH ... i 5 159-98 + 7-53 ma ... ... 5 251-5 18-9 ... Group 1465. til spots on Aii-Miit 24. Tin- group has xnMiiy increased in s ~C 15, .ui-1 then - ' i regular upot a, followed 1. -rs of small spo 1 -MI . .p-.rn . -i MZP, and on August 17 mtireiy of two vrry large -puts, the .-in. ill following spota having coales.-p. I t.i inak.- .1 v.-i \ li-ir- M...I., 6. On August 19, a and & have coalesced to make "lie still lri- Group 1469. A regular spot, a. Small spot* follow it August 17-19. Aug. 26-413 *7''57 '3 8 22 '4 No pho No pho No pho O 59 107 "*S 63 togriiph. tograph. tograph. 2O 18 *3 ,1 9 ( 7 ( 5 ( 3 o o 101 121 94 IO2 So 57 34 12 1 1 '^4-9 '5 4'9 '54'5 '54'3 54'7 155-1 55'5 '^'9 ISS? 10-9 10-8 -107 -107 -10-7 -10-8 io'9 10-9 -107 -71-4 -61-6 -45-0 -31-9 -18-4) - 4'8) + 8-8) + "3 + 35"' Aug. 24-543 25-221 16-413 157 447 2 9'453 o 46 Si 203 1 66 '47 *9 '47 659 "47 1112 '334 O *4 4' 104 9' 93 16 "ja 334 586 615 842 222-1 223-0 224-4 224-3 2239 223-2 + |6'2 + '>'5 + 148 -t-15'5 -MS'* + 5-3 28-9 -19 1 - 1-9 + 7-8 + H'4 + 37'0 z8 '44" Z9-453 30 3' i z'434 3-398 Means ... 59 4" 123-48 + '5'4* Means S 68 155-08 -1079 A small spot, very imal 1 Group 1466. < >n August 17 and the succeeding days the group consists of wrct.t! ip 1470. Several small faint spota measured together on August $. Only one remain* on August 19. Aug. 25-221 26-413 '57 28-44- 9'4S3 1 O o o 4 9 4 10 10 *5 3 o o o 2 '5 4 7 6 ' + I'l'O 1-1 1 I71-3 172-1 1707 - 9-6 - 86 - 8-5 - 8-0 - 8-4 -71-1 -55'* ->* -27-4 -'5'5 Au-,'. iS- 44 - Z 9'453 O *7 18 o o 5 10 184-0 184-0 - 8-6 - 8-9 '5'5 22 M'TlllS ... 1 9 171-24 - 8-62 M.-II.- ... ... o '3 i -4-00 - 8-75 ... HEI.IO.HAPIUC RESULTS, 1882-1885. 242 AREAS AND HELIOGRAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group Longitude from Central Meridian. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Group 1471. A number of small faint spots irregularly disposed. Group 1476 continued. 1884.,, Sept. 7-654 17 8-389 12 9-227 12 10-463 i 6 11-462 5 76 30 42 21 '9 12 7 6 3 3 ,8 23 1 1 10 o 25-5 25-9 25-9 26-9 27-6 -I - "5 - -6 - -6 o -394 -29-1 -'7'9 - 0-6 + 13-2 | 1884. d Aug. 29-453 30 3' Sept. i 2 '434 3'39 8 4-150 No pho No pho No pho o 7 66 tograph. tograph. tograph. 184 104 9 o ( (0 (o o o 4 83 88 9+ 99 105 58 5 o 123-9 123-4 122-9 I22'3 1*1-8 I2I'I I2I-7 o 19-0 19-0 19-0 19-0 19-0 -Tin -17-1 o 62-3 -497) -37-0) -24-4) -i 1-8 + 0-3 + 10-8 Means 6 27 25-87 -'I-39 ... A few very small spots ( large regular spots, 1 Group 1477. >n September 6. On September 7 the group consists of two a and It, with several small spots between them. Means ... i 82 122-44 -18-49 Group 1472. A small spot. Sept. 6-251 7-654 8-389 9-227 6 S 2 25 9 '9 274 137 5 4 61 64 28 '4 321 3-8 148 124-2 126-5 130-1 121-8 -14-0 -14-2 -'45 -13-7 + 41-0 + 6. -6 + 75-I + /8-o 1 Sept. 3-398 o 6 10 l88'4 2O'O 4-67-6 Means ... 10 188-4 2O'O .Means ... 39 200 125-65 14-10 Group 1473. A small spot. Group 1478. Two very small spots. Sept. 4-150 I 1 1 2 12 50-5 j 18-1 60-4 Sept. 6-251 o 20 10 79-9 + 18-6 - 3'3 | Means 2 12 50-5 -18-1 Means 10 79-9 + 18-6 Group 1474. Two small spots. Group Several small faint spots close together. H79- The group undergoes several changes. Sept. 5-426 6-251 4 33 101 O 2 17 53 98-2 97 -6 + I7-8 + 18-1 + 4-i + '4'4 Sept. 6-251 7^54 8-389 9-227 10-463 1 1-462 i o o o o 24 16 16 2 43 25 o o \l 'I \\ 20-4 20-7 22-2 21-2 21-8 22'I -I4-3 -14-9 14-0 -15-0 -H-3 -62-8 -44-2 -3'8 -22-6 - 57 + 77 Means ... ... I 35 97-90 + I7-95 ... Group 1475. A small spot. The small spot seen on September 6 is apparently not identical with that seen on September 5, though in its immediate neighbourhood. -14-6 Means o 15 21-40 -14-52 1 Group 1480. A few small spots on September 6. Other spots appear on September 7 and 8, and on September 9 the group is a compact cluster of spots. The group continues to increase in size ; the first and last spots increasing with the greatest rapidity, 30 that on September n the group consists of two large spots, a and b, with a stream of small spots between them. The intermediate spots have all dis- appeared by September 16, but some small spots are seen on that day following b. Sept. 5-426 6-251 o 6 4 O O 7 4 33'5 31-6 - 97 - 7' -60-6 -51-6 Means o 6 32-55 - 8-35 Group 1476. A small regular spot. Sept. 6-251 7-654 8-389 9-227 o o o 25 10 47 28 150 o o o 15 '5 38 '9 88 I2'4 12-6 I2'2 I2'2 + 14-8 + H7 + 14-2 + 14-1 -70-8 -5^-3 42-8 -31-6 Sept. 5-426 6-251 o 9 29 29 o IO 45 30 24-7 24-6 i ro -i 1-6 -69-4 -58-6 TAKES AT CI:KKNWICH, is INMA. AM> IN MArumrs, IN TIIK YKV ro 1885. ia Greenwich Civil Time. te'_'r;i]iliic Positions of (In'tips of Sun Sji.'ts <-ot, a, followed by a close cluster of smaller spots, which hare coalesced by September la to form one s|x>t, 4. 4-d :. 10-463 1 1 '462 12-411 14 .4-458 1 57 653 162 1038 306 1528 333 1796 No pho tograph. 390 2036 1304 67 ,20 30 338 81 1 61 801 192 1051 (265 I ; 44 218 1630 1356 o '37 i6'o 168 '73 19-1 20-9 156 5-8 + 14-0 + 141 + 14-0 4-13-4 + '37 + 14-0 H-13'9 4'3'3 13-8 + 1-6 4I4-9 + 287 443-9) 4-59"' +67-2 + 80-3 1884., ' 9'227 10-463 II-461 12-411 '3'4'3 24 21 1 1 7 3 228 '75 101 3 28 '5 1 1 6 3 i 138 92 52 o 9'4 97 9'2 10-3 1 l'2 o 4 9'' 4 8-9 + 87 4- 87 + 9' O -34'4 -17-8 - 5'2 4- 8-4 + 22-6 Mc.-IIK ... 7 63 99 6 + 8-88 ... 119 748 i;'3S +14-02 Group 1484. A large regular >pot, which has divided into two spots, a and b, by September 15 ; a has disappeared by Septeml>er 18. Croup 1481. i by tno or three smaller - ,ber u ; a mall spot is wen The following spob preceding a on that Sept. 12-411 '3'4'3 '4 15-441 16458 '7'435 18-431 '9'555 20-436 21-443 22-454 23H45 15 3' No pho 53 62 36 5' 53 33 '5 12 7 103 191 tograph. 273 282 249 209 182 121 108 75 33 (33 32 34 18 26 29 20 1 I 12 10 '97 204 1 86 167 148 '43 2 5 "3 107 86 103 "5 286-6 286-2 286-4 286-5 286-8 287-3 287-8 288-0 288-2 288-4 287-9 287-1 4 5-5 + 5'5 + 5'4 4- 5'3 f 4-8 + 4-6 + 47 4- 4'* ll-l + 3-6 4- 3-3 -75-3 -62-4 -48-9) -35-3 -21-6 - 8-2 4- 5'4 + 20-4 4-32-3 4-457 4-S87 4-70-9 654 9-127 10-463 ,-462 12-411 '3'4'3 '4 '5'44' 56 26 35 27 20 16 Xo pho B 268 253 2 * 3 16; '75 "5 27 43 18 22 16 16 '3 12 (10 "4 188 158 142 99 1 1 1 83 59 34 25-0 2.V2 244 24-9 22-9 -23-0 -23-3 -23-0 -23-2 -25-2 23-6 -23-2 -22-8 -41-6 30-0 2O'6 - 3-' + 10-5 + 22-6 + 35-3 + 6ri LOI It no 23-94 -23+2 Mean* ... ... 4 '4' 287-17 4- 4-55 ... Group 1482. Two large rrgular spot, a and b ; small spots are occasionally seen between them, liegins to diminish in size after passing the ctutnl meridian on u'l'fr 13, b ilimiiiitliiug the more rapidly and disap|>earii)g entirely before September 19. Group 1485. A few small spots on September 15. The group rapidly increases in site, and forms on September 17 and the succeeding days a long irregular stream of spots. The group diminishes in size after passing the central meridian on September 19. ;.t. 8-389 9-227 10-463 1 1-462 112-41"! '3'4'3 '4 '544' '6-458 I7H35 18-431 '9-555 20-436 .6 17 86 83 123 "4 Xo pho 92 90 78 18 O I '53 336 499 577 667 674 L-I ipk 562 445 3'5 130 73 24 35 52 7 59 (54 48 52 S3 '7 o 3 386 44' 401 367 372 347 3'9 291 256 215 1.8 121 107 336-0 335-7 n 336-2 336-4 336-3 3367 337-' 338-0 338-6 3393 3399 + 5'9 + 6-1 + 6-1 4- 5'9 4- 5'9 4 5-9 + 5'9 4- 5-9 4- 5-6 4 5'3 4- 5' 4- 3'9 + 4-2 -79-0 -68-1 -51-8 -38-2 -5*J -12-3 4- 4'5-3 + 29-6 443'' + 72-6 + *4- Sept. 15-441 16-458 '7'435 18-431 '9'555 20-436 21-443 22 '454 25459 12 '3 183 185 "4 141 84 102 5 'J 39 240 813 920 946 891 563 539 388 120 63 >4 1 1 1 18 103 59 7' 45 59 35 25 44 192 55 5'6 489 45' 296 312 121 "7 257-1 256-6 256-I 256-2 2569 2577 258-I 258-8 260-7 262-3 264-9 4'37 + 13-8 + '3'9 + 142 + 14-1 + 14-0 4'39 4-I3-9 + I2-S + 11-8 + 10-6 -647 -51-8 -39-4 26-2 -10-7 + '-8 4 '5-4 + 296 + 44-5 + 60-9 f-75'3 Means ... 1 ... 42 288 337-39 4 5 ;> M,.n 8 ... 49 303 2^8-67 + '3'34 244 AREAS AND HELIOGRAPHIC POSITIONS OK GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliograplric Positions of Groups of Sun Spots amtiinu-il. Date. Greenwich CivU Time. Projected Area of Area for Group. Mean Longitude of Group. Longitude .Mean from Latitude Central of Group. Meridian. Date, Greenwich Civil Time. Projected A rea of Area for Group. Mean Longitude of Group. Mean La! i i of ( Iron]). Longitude from Central Meridian. Unibni. Whole Spot. Umbra. Whole Spot. Umbra, Whole Spot. i Umbra. Whole Spot Group 1486. Two regular spots, a and b. Some small spots arc sccu near them on September ii, 23, 24, and 25. ( 'iiMitp i 489 rontiimed. 1884.,, Sept. 2 2 '4; 4 23-445 24-565 2 5"459 26 27-229 27 22 23 O No pho o 236 209 90 54 toijraph. 9 14 1 1 '3 ( 121 116 57 40 27 '4 239-0 239-8 239-1 236-7 2^7-6 238-4 ' O + 6-j + 9-8 + 5 6 + 2 3'6 + 64 +37-7 + S'4 +47-1 + 8-9 +59 + 9'3 +7^-1 1884., Sept. 16-458 17H35 18-431 9'555 20-436 * ''443 22-454 23-445 24-565 *5'459 26 27-229 4' 75 H5 97 "5 I 12 107 88 79 No pho 5' 121 248 354 44 622 702 695 (i So 583 578 tograpb. 263 24 92 70 78 57 61 57 55 49 49 (49 49 348 346 3*5 300 366 372 354 351 322 354 302 250 226-8 225-2 224-8 225-1 224-9 224-6 224-8 2247 225-0 224-2 224-9 225-6 b + l6'2 + 16-0 + 157 + 15-8 + 15-4 + 15-7 + 15-6 + 15-6 + 157 + 157 + 157 + 157 a -si-6 -70-3 -57-6 -42-5 31 o -18-1 - 4'4 + 8'5 + 23-6 + 34-6 -r-47'o) + 59'3 MeiUIS 8 67 238-42 + 7-05 Group 1490. Two small spots measure. 1 together on September 19. Only one spot rcmaii September 20. This spot las developed into a close cluster of three - spots, measured as one, by September zi. Means ... ... 5 8 333 225-05 +15-73 Sept. 19-555 20-436 21-443 7 '7 '7 4 72 o 1 1 10 38 227-4 129-8 229-2 + 19-0 + I7-4 + 17-6 -40-2 -26-1 -I3-5 Group 1487. A few small spots. Three are seen on September 17, two on September 8, none on September 19, three on September 20, two on September 21, and two, measured as one, on September 22. Mi-;UlS I 20 228-80 + 18-00 Sept. 17-435 18-431 I9-555 20-436 21-443 22-454 O 4 65 25 O 63 43 44 o o 2 O 35 13 o 33 26 33 2/4-2 274-6 *7 5 '9 278-3 278-3 + 15-5 + 16-I + 14-1 + 14-1 + 14-4 -21-3 - 7-8 + 20-0 + 35-6 + 49'i Group 1491. Two small spots on September zi. The group rapidly increases in .-i. e, and con- sists on September 22 and the succeeding days of a regular v. ith a number of small spots following it in an iiregular stream. On September 30, a is very near the Sun's limb, and is not clearly sepaiated from the other portions of the group. Means ... o 23 276-26 + 14-84 Sept. 21-443 22-454 23-445 24-565 25H59 26 27-229 28 29 30-501 2 47 81 68 171 No pho 100 No pho No pho 8 47 286 394 715 1081 toiriaph. 767 tograph. tognpb. 295 1 28 44 35 9 1 (80 68 (5' (3 I 18 34 17 215 368 573 533 493 563 633 703 197-6 199-0 199-6 200-5 2Q1-S 2O2'3 202-8 IOi'1 201-4 200-7 - 7"~ -45'' Group 1488. A very close pair of small spots on September i S ; three small spots on September 1 9 ; one spot of greater area on September 20. - 7'3 - 7'2 - 6-8 -6-9 - 6-9 6-q -30-J -i 6-6 - c '9 + 12-2 + H'4) + 36-5 + 5'*) + 63-9) + 77-<> Sept. 18-431 I9-555 20-436 3 3 20 H 27 3 o 8 18 22 86 335-9 336-2 335-2 -i 1-6 -11-9 10-9 + 53-5 + 68-6 H-79'3 - 7'4 - 7'9 - 8-4 Mo;ms 45 4^9 200-78 - 7-29 Means ... 4 4 2 335-77 -11-47 Group 1489. Two spots, a and b, on September 18. The spots move away from each other on tin 1 lUoaeeding 'lays, and other s >ots appear between or near them. The group on September ao and the .-u.vfe.iini; days consists of a number of small irregularly distributed over an extensive area, a and b continue to be the largest members of the group ; the other spots ;uv measured in clusters. Group 1492. A small spot. Sept. 21-443 22-454 23+45 24-565 Z 5"459 o 24 5 3 18 43 5i '9 H o 15 o 28 '4 29 3 " 2 < 196-5 197-0 198-2 199-2 199-8 -,6- 7 -16-5 1 6-0 -165 -16-1 -46-2 -3-'- -18-0 __ i ^ -(- 1O'2 Sept. 18-431 19-555 20-436 21-443 15 1 1 16 28 66 149 98 224 1 1 6 9 15 45 86 52 I 12 238-1 237-8 238-5 239-2 + 57 -44-3 + 67 -29-8 + 6-9 -17-4 + 6-1 - 3-5 Means 4 i* 198-14 16-36 .N; \\ 1SD ;- M\i UTIU8, IN THK YEARS 1S82 TO 1885. . t s and II f (Inmiis ..f Sun > itinunl. Orer:. I'roj I Of MMU up. M,.,, Latitmli- :.Mlp \MI from iral Meridian. Qreennit-li Projected Area of Area for Group. Mean Of (toll]*. Mran Utiude ..ip. .. iral Meridian. Whole L'liibra. Wliol.- Umbra. ''I 1 '493- nail spot. A sec"- .en near it on Se|.t*ml*r j. Cfroup 1497 enntinnfl. e -59'0 -47-6 -33'3 19-6 1884.,, 29 30-501 i I>4I1 3-459 4-435 5-141 Xo pho 136 Xo plio 86 65 67 6 5 2 : 590 37 H4 63 (60 74 (64 54 47 7 4 '95 35 363 264 15 2 236 124 i 126-1 126-3 1264 129-0 129-5 129 i -13-6 -'3'4 -'37 -13-9 -'3'5 -3'4 ~'3'5 -'3-4) 4- 3-o + 15-8) 4-28-5 4-45-0 + 58-3 4-67-1 ^565 O O O 11 3 i ; O O O 12 *3 '4 - 1-6 9 181-8 O - 3'5 - 3'* - 3'5 - 3-5 M. HIS ' '4 - 3-43 ,\> 1494. Two small spots measured together. M.-.tiis 54 283 125-82 13-62 Group 1498. A small spot oil Septeinl*r >;. A number of other small spots are wen on September 30. The xruup iurrtasa yet Turtlier in niir, ami on October s ami succeetliiiK . ,.n>i>is of a large regular spot, a, followed by a straggling strram of small apota. o 38 O '9 205-3 4- 5'6 10-9 ... O 19 ; 3 4- 5'6 I 1 '495- A Urge regular spot. Sojit. 27-229 5 2 8 No pho 29 X'i I'll' 30-501 32 >ct. i Xo pho 2-412 53 3-459 86 4435 4* 5-141 69 674 43 7 S22 10 16 x>graph. ' 95 - i 381 510 33 344 2IO 109 9 (3 (,6 20 ('4 28 45 26 4* 4* '9 28 59 9' 122 I 7 *>7 265 205 240 202 205 957 94'9 94-2 93'4 95'5 97'5 100-7 1O2'2 101*5 I02-4 102-7 -14-1 -14-3 -'44 14-6 -70-6 -57-0) -43-0 -297 -15-0) - 0-4 + 16-7 4-3- 4-39-6 4-55-5 + 7*'3 s M *59 :29 *9 {o\ i 1-411 4'43? 5-141 ' '4 >' 62 83 68 26 20 286 -i 3 6l tosraph. 202 1)1 61 35 50 (45 39 45 (46 46 43 11 s = 76 '5* 228 220 216 :.- 218 246 246 134-0 134-2 ijj-8 '33 S 133-8 133-8 133-8 133-8 '339 -'9 '33'9 134-1 I33-9 -12-3 I2'l -12-6 -12-8 -13-0 - '3 '- -' 1 -'37 -13-9 -14-1 -'4'4 -'47 -14-8 -82-2 -6; -S! -44-*) -3 -iS-i) - 37) 4-107 + 23-4) 4-36-0 4-49-9 4-62-9 4-7z-o -14-1 -13-6 -12-6 -12-6 -13-1 -13-4 -13-8 Mi-ans ... 16 164 9^*25 -13-69 Group 1499. A small spot on Sf piemlwr jo .iiiti Octolier a. Ou October 3 and the succeeding days the group consista of a few small spoU irregularly scattered over a wide : ^43 133-90 -' : .v-|. 1.30-501 ( let. 1 2-412 3-459 4H35 5 '4' o 28 ho tograph. o 9 34 " 12 83 8 o (o 1- 6 4 *5 '5 S 59 4' 9 67-5 6 7 -2 66-8 67-5 68-3 71 i 4- 9'' 4- 9'6 4-10-0 4- 9'6 4- 9'6 4- 8-2 -55-6 -43-4) -311 -16-5 - -9 + 9'* 459 o Tr :: Group 1496. ro ery tmall ; : if : + 6-4 -26-3 Means O ,2 ,6: + 6-4 Mr;ill> 5 28 68-07 4- 9'35 149-. A -ilsr ier 30, mall mall S-II-.L- lisve all :\> I>OO. Several small sputa following ne another. . 2>I2 3459 8 2 79 1 1O 5 i 46 54 7*i - 7'* - 7'8 -25-8 -119 ! 28 4 togiaph. 1 19-9 1 22"O -46-4 -29-9) 3 9 -' : \1 MM ... ... J 5 72-10 - 7-5 246 AREAS AND HELIOGIJAPHIC POSITIONS OK GROUPS OF SUN SPOTS DEDUCED KROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots contin,n<'5'3 '57 '57 16-0 ,5-6 '47 15-2 14 i 14-2 10'2 o + '4'4 + '+3 + '4'4 + '4'5 + '4'5 + '4-3 + '4-' + '4'4 + 13-8 + '3-8 + '3'5 + 14-' -f-14'3 + 14-1 O -77-6 69-0 -56-1 -46-5 -31-6 -'47 - 2 "4 + 11-4 + 21-7 + 33' 2 + 46-2 4-61-8 + 75-3 + 80-9 Means 6 33 34'' 6 3 16-90 Group i 506. Several small spots irregularly arranged. Oct. 10-293 l 1-229 12-186 13-442 14-458 15-192 12 '4 16 18 10 12 47 65 5' 7i 81 59 16 12 I I 10 6 66 59 ' 35 40 42 30 283-5 284-1 285-5 285-2 285-3 285-9 + 14-2 +14-2 + 13-7 + 14-1 + 13-9 + 13-1 -70-4 -57-4 -43-5 -27-1 13-6 Means ... 1 1 2 780 I5-18 + 14-18 - 3'4 Means 10 45 284-92 + 13-87 Group 1502. A small spot, a. By October ; ; a has become a cluster of small spots, and a second cluster, b, has appeared a little in advance of it. a has disappeared by October 7. Group 1 507. Several very small spots in a compact cluster. Oct. 15-192 O 1 1 o 6 311-3 - 1-7 + 22'0 Oct. 4-435 5-141 6-274 7-522 8-461 3 9 38 18 23 132 '59 79 16 2 6 21 10 16 81 88 4* 9 317 3I-3 31-1 33-6 34'4 -11-3 -I1.-J -"'3 -39'5 30-6 -15-8 + 3'2 + 16-3 Means ... o 6 311'3 - 1-7 1 7 -12-3 Group 1508. A spot of irregular outline. It has broken up into a number of small spots by October 18. Means 8 47 32-42 - 1 1-58 Group i 503. A small spot. Oct. 15-192 16-173 17-182 18-398 19-506 20-241 21-186 22-521 13 '9 7 4' '4 29 22 5 1 06 184 151 223 167 132 9 1 24 2 4 20 6 25 7 16 1 1 3 201 196 118 137 9' 73 47 H 215-7 215-9 215-5 215-5 216-5 216-1 216-6 217-9 - 8-4 - 8-4 - 8-8 - 8-8 - 9'5 - 9' - 9'3 - 8-6 -73-6 60-5 -47-6 -3i-5 -15-9 - 6-6 + 6-4 + 25-2 Oct. 5-141 6-274 7-522 8-461 2 3 8 9 IO 3i 9 3 3 5 i '5 10 21 5 349" 8 35'3 35''4 35''5 - 9-1 - 9'3 - 9'5 - 9-8 -72-1 -56-6 -39' -26-6 Means 3 13 3575 - 9"43 Means '4 I 10 2l6'2I - 8-85 ... Group 1504. Two small spots. Group i 509. A spot of irregular outline. It has broken up into a number of small spots by October 18. Oct. 7-522 8-461 4 7 40 45 3 7 3 43 67-9 68-5 -22-9 -*4'4 + 37-5 + 5'4 Oct. 15-192 ! 15 16-173 8 17-182 6 18-398 15 56 95 I IO 170 62 13 6 10 229 142 104 "7 207-3 207-2 207-3 206-6 - 8-2 - 8-8 - 9' 1 - 9' 1 82-0 69-2 c --8 Means ... 5 37 68-20 -23-65 ... 55 -40-4 TAKES M I ii:KKN\MCII, IN IsiHA, ASI> Is M IN TIIK YKAKB 1882 TO 1885. 247 is iind lli-liojjnijiliir 1'ositions of (Iroujis of Sun SJMILS funtiiiiitd. Pro.;' An i Area of ;p itudo of Group. Mean LatiUi'1'- of Group Longitude from Central Meridi-in. Greenwirli Civil Time. 1'rojocte.l Area of Ami for up. Mean r.inlr ioup. US.II Latitude of Group. Longituil' fiom Central Meridian. Civil Time. whole Umbrfc Whole S|*t. S|>ot. Umbra, S|K,t. r/Bbm. Spot (iron-) 1 509- i-tintiuueJ. ' .map 1515. A small spot not seen on October zz. t , ;o6 8 t 83 20-241 '9 '6 10 57 2i'is.'. i; 133 - 70 22-521 22 O 12 o 20- 208 1 : --i 209-3 o - 9-6 -11 -5 -11*7 O -24-1 -14-6 -f 16-6 1884. Oct. 20241 21*186 22-521 *3493 o 2 1 10 10 *9 i 6 7 33 o *377 *J7'4 *37'3 o -26-8 -7'J -27-0 O -M7'2 + 575 14 102 207-78 - 974 ... M,,,,, ... ... ... i 12 *37'47 -*7'3 Group 1510. Three umall spots ; two are measured together. Group Two small spots, a and b, on October zo. the succeeding days. Small spots oc 1516. They move apart ami increase in size on ;nsionally appear between or near them. 16-173 8 65 15 109 3*7-6 - 9'' +71-2 ... 15 109 3476 - 9-1 Oct. 20-241 21-186 22-521 *3'493 '4 26-538 28-290 ,1 62 99 No pho 184 117 20 2 36 540 7>7 tograpli. IOOO 576 284 *4 3 '9 33 54 (97 140 '33 5 7 2O 65 282 396 580 765 657 579 9* 198-5 198-4 200-4 aoi'i soil tori 202-3 202-4 198-4 - 82 - 8-5 - 8-5 - 8-6 - 8-7 - 87 - 8-8 - 8-9 -24*2 -n*8 + 77 + 21-4 + 34'4) + 626 + 747 + 81-9 Group 1511. Two small spots. 18-398 i 16 i 19 3-0-4 - 7'4 + 63-4 l 19 310*4 - 7'4 Group 1512. Three small spots. Ml-.lll-i ... ... 60 382 200-43 - 8-59 ... Group Two very s 1517. mall spots. 18-398 9 49 6 37 291-5 - 9-8 + 44'5 s ... 6 37 *9i"5 - 9-8 ... (>roui> 1513. A small spot. ii,t. 21-186 4 25 2 .3 217-5 + 18-8 + 7'3 Menus ... ... 2 '3 217-5 + 18-8 20-24! 0504 21: o 9 o 12 2807 280-3 + '3-' + 58-0 + 70-1 ' .r.iiip I 5lS. Two regular upots, a and b. Some small spots are seen near them on October z; and the M-rcceding days. ... o 8 2 So- 50 + ' Group 1514. A close pair of small spot* n October zo. Only one spot is seen on October zi, seen on October zz, and one spot is seen on October zj. 21-186 22-521 *3'493 4 26-538 28-290 5 28 No plio 49 35 7 9 V' 186 205 182 79 43 '4 26 22 28 '9 \ "5 '35 '47 '3* 116 98 4* 132-4 132-4 1324 ,32-5 132-6 '33'4 '3*7 -39 -14-1 -14-1 -'43 -4'S -'47 -'4'3 ~'4'4 -778 60- 3 -47'4 -343) -'o! + 5' + 16-2 20-241 9 41 6 25 21-186 0604 22-521 o o o o 23-493 o 19 o 23 24O-O 24-9 241-8 -24-9 240-5 -24-4 + '7'3 + 607 UU 2 13 240-77 24-73 Mea,, 18 IO2 132-64 -14-29 248 AREAS AND HKLIOGRAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Date. Greenwich Civil Time. Projected Area of Area lor Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Group 1519. Several small spots close together. Only one spot remains after October 2 Group 1522 continued. 2. 1884. a Oct. 28-290 29-555 30-407 31-442 Nov. 1-186 2-209 24 29 48 97 52 6 "3 144 283 367 288 4' >3 '5 27 61 39 5 58 74 iJ 2 229 209 4' o 108-9 108-8 109-5 110-2 i io-6 110-7 o - 6-3 - 6-6 - 6-1 - 57 - 5"7 - 5'6 - 7-6 + 8-9 + 20-9 + 35-2 + 45-4 + 59' 1884.,, Oct. 22-521 23-493 24 2 5 "473 o o No pho 142 12 tograph. 1 1 o o (o o 77 7 9 1 1 212-4 ~ 4' 211-3 - 4-3 212-1 - 4-5 2I2"8 4-6 + 19-7 + 3'"5 + 45-3) + 59-I Means o 26 212-15 ~ 4'35 Means '9 96 109-80 6-22 Group 1520. Two regular spots, a and b, on October 22. They increase in size on the succeeding days, and other spots appear between or near them, b has broken up into a number of spots by October 28. Group 1523. A small spot. Oct. 22-521 23-493 24 25H73 26-538 27-447 28-290 29-555 30-407 31-442 Nov. i -i 86 2-209 63 No pho 290 344 241 200 288 ,65 148 124 48 57 260 tograph. 1226 1673 1492 1607 H53 1071 901 708 321 o 74 (134 194 '97 130 107 172 104 117 120 74 "5 302 560 818 967 805 854 854 673 704 684 504 I 19-0 1 1 7-6 117-4 117-1 117-9 119-3 119-5 120-3 121-5 121-7 121 -8 121-5 -14-1 -14-4 14-8 -1 5 -I -15-4 14-8 14-6 -'4'5 i i-i -13-7 -'3'5 -13-6 -737 62-2 -49-4) -36-6 -21-8 - 8-4 Oct. 25-473 26-538 8 7 18 3 6 4 1 5 20 1O2'4 IO2'6 -137 -I 3 -8 -5i-3 -37'' Means 5 18 102-50 -13-75 + 3-o + 20-4 + 32-9 + 467 + 56-6 + 69-8 Group 1524. Two small spots, and li. Oct. 26-538 27H47 28-290 12 2 9 79 '47 35 6 i 5 4 /6 2 1 142-4 1 43'4 144-1 + II-1 + 11-2 + I I-O + 2-7 + 15-7 -\ 27-6 Means ... 119 653 119-5; -14-13 Means 4 46 143-3 + 11-10 Group 1521. Two small spots close together, which are measured as one on October 23. The two spots, a and b, have increased in size by October 25, and two very small spots are seen near them. The small spots have disappeared by October 26, and b has disappeared by October 28. Group 1525. Two small spots, a and b. b 1ms disappeared by October 27. Oct. 23-493 24 25-473 26-538 27-447 28-290 No pho 36 3' 4 3 16 tograph. 187 104 37 17 o (" 21 2O 4 3 9 59 109 68 28 '7 168-7 169-4 170-1 170-5 170-3 171-2 20-7 20-9 2I'I i i-i + 2-7) + 16-4 + 30-8 +42-6 + 547 Oct. 26-538 27-447 o 2 25 9 o i 32 8 72-4 72-6 + 8-4 4 9'2 -67-3 -55'i -21-4 -21-4 Means ... i 20 72-50 + 8-So 22'2 Group 1526. A regular spot, a, followed by a fainter spot, b. Other small spots are seen near it on several days, b has disappeared by November 3. Means 10 48 170-03 21-28 Group 1522. Three small spots on October 25. Other small spots appear on the succeeding days, and follow each other in a straight line. The preceding spot on October 29, a, and another spot following it, b, increase in size on the succeeding days, whilst the other spots diminish and disappear, a and b likewise diminish after November i. Oct. 28-290 29-555 30-407 3f442 Nov. i -i 86 2-209 3-421 9 i5 54 48 7i 32 34 40 280 347 353 281 264 244 1 1 1 1 34 27 37 16 18 52 223 222 '97 146 132 127 48-2 48-8 50-0 50-2 50-6 50-8 51-0 + 9'4 + 9'9 + IO'2 + 10-2 + IO'2 + 10-2 + 10- 9 -68-3 -51-1 -38-6 -24-8 -,4-6 - 0-9 + IJ-3 Oct. 25-473 26-538 27H47 6 5 o 30 85 56 4 3 o 22 5' 3 109-2 109-9 1 10-4 - 7'0 - 6-8 - 6-2 -44-5 29-8 -17-3 TAKKN Al (iKKKNVVICII, IN Isi.|\. AND IN M VflMTIfS, IN TIIK LM9 i-.-ipliii- 1' ' .1 of Am for If, M I^JIiKIti:-!.- I .at :.>p. .tinK- from tral Uu. Date. Greenwich Time. oled AM At. . up. M.ai, itude MMII Latitude of C .. tal ii.n. riITime - r,!,,, v Umbra. Whole Umbra. I'mlira. \Vh..l.- ,;. I ;:> 'tniul. Group 1 532. A small spot on November 9. The group ha* greatly inm-a- Vovrmlr 10, and then consist* of a large regular spot, a, followed )>y * >|N>t, '>, uf .M uutlinr. Small spots are also seen between and near them. 4 has begun to break up liy November 1 5. 4-^2 30 18 "116 6-326 21 110 7'- * 4 i- 12 '9 1 1 IIS So 96 55 o ,2-1 52-6 5*'4 o 4-iri 11-4 + 11 + 11-9 + 30-6 + 43'o + 55-' +69-3 i8S. Nov. 9-180 10-488 11-271 12-273 13-156 '4'53 15-526 16-234 O 74 138 158 >'3 66 1 1 5 '5 5'7 95* 1 109 850 6 44 I7 98 O 38 7' 86 69 5* '5 36 8 265 49* 603 5" 508 21 I 201 o 196*2 299-6 99'2 298-8 299-2 299-3 30I-3 3O2-1 10-2 - 87 - 8-6 - 7'9 - 7'9 - 7'5 - 7'* - 7-2 -2 3 -6 - *'9 + 7-o + 19-8 4-31-8 + 497 -(-65-1 + 75'3 ... '3' 50-74 4-10-65 ip 1 }27. Two small 1 1 - f> 9 35 5 22 103-0 + 57 + 37'S Ml-alK 46 35 299-46 - 8-15 ... 3 5 22 103-0 + 57 Croup 1533. A small spot. A second small spot is seen close to it, anil measured with it on Novriiilwr 1 1 . ip 1 528. Two very small |...ts. (inly oi.e remuins on November 2. Nov. ri86 2 i ; 2-209 6 i 7 4 72-3 747 - 9'5 - 9-1 + 7'i + 23-0 Nov. 10-488 1 1-271 12-273 o '3 o 20 73 2 9 3 5* 2 336-S 336-3 335-4 - 6-3 5-6 + 3 4'o -1-44 ' + 5*'4 Means i 6 73-50 - 9'3 - 5'* Means 3 22 336-07 57 Croup i 529. Three very small spots. Group 1 534. Three small spots. The two preceding spots form a close pair and are measured together. ri86 5 12 2 6 587 -24-2 - 6-5 nis 2 6 587 -24-2 Croup 1530. A v,iy -mall spot. The spot seen on Novembei that s*n . v . r i. 2 is proliahlv not the same as Nov. 10-488 l 1-271 12 9 56 3<> 6 2 9 '4 288-9 289-3 + 4'' + 4'* -13-6 - *'9 MIMIIS 5 22 289-10 + 4'5 ... .1-186 i 4 2-209 o 10 3 1 7 , 13-2 + lO'l + 9'5 -53'3 -38-5 ip l 535. Two small spots, a and b. Several -mail s|>ots are seen following a on November 1 3. M.uw 1 5 12-55 + 9 Croup 1531. A mall spot. N.iv. 10-488 l 1-271 12 273 13-156 I4 - 503 10 7 12 12 O 46 zz f 63 12 8 6 6 37 '4 *5 ^ 250-2 251-6 *53'4 *53'4 256-0 + : + 37 + 4'4 + 4'4 + 5'* -$'| 40-6 -256 -14-0 + 6'4 1 Nov. 2-209 '4 o 39 131-0 - 6-3 + 79" 3 M-atis o 39 131-0 - 6-3 Means 5 23 252-92 + 4'*8 ... PHOTO-HELIOGRAPHI. 1882-1885. 2 I 250 AKEAS AND HEUOGHAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FKOM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sim Spots continued. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Date. Greenwich Civil Time. Projected Area of Afa fur Group. Mian Lougitude of Group. Mean Latitude of Group Longitude from Central Meridian. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Group 1536. A close pair of very small spots. Group 1540. Two small spots. 1884. Nov. 12-273 13-156 4 r '3 15 4 3 I I 10 o 224-7 224-5 p - 37 - 3'6 -54'3 -42-9 1884. ,, Nov. 13-156 2 2 7 ' IS 228'6 o - 8-9 -38-8 Means ... I 18 228-6 - 8-9 Means 4 1 1 224-60 3-65 ... Group i 541. A regular spot, a. A small spot appears following it on November i small spots forming an irregular stream appear on succeeding days, regular spot, b, appears closely following a 011 November 19. !. Oth-r A second Group 1537. Two small spots, a and b. On November 14 and 15 each spot has become a compact cluster of very small spots. A third spot, c, is seen on November 15. N'ov. 16-234 17-284 18-284 19-467 20-291 21-284 22-233 23-225 24-293 2 5' 2 55 12 I "l 1 / 30 70 5 2 82 47 30 6 2 82 '54 202 354 55 2 45 2 308 2 I 1 74 2 3 17 '5 20 4 27 4i 24 '7 4 I 122 , 3 6 137 199 289 228 l6o "9 50 20 156-4 + 7-9 I 5 --8 + 7-7 157-6 + 77 157-1 4- 8-0 157-1 + 7-9 158-3 + 7-8 159-8 + 7-4 160-7 4- 7-5 161-6 + 7'4 161-6 + 7-7 -70-4 -55'i -42-1 Nov. 12-273 13-156 H'53 15-526 16-234 17-284 4 4 o 9 4 26 54 4 97 45 8 5 3 o 5 2 O 28 43 2 4 54 24 5 217-4 217-2 218-3 218-1 2 I 8-0 218-2 4-18-3 4-18-5 + 187 + 187 + i9'3 + '97 -6r6 -50-2 -311 -18-1 - 8-8 + 5'3 2 / ' -16-2 - ''9 + I2-I + 26-0 + 41-0 + 537 Means ... 3 3 217^87 + 18-87 Moans i 21 146 1 58-80 -4- 7-70 Group 1538. A very close pair of spots. Group 1542. A small spot on November 18. Other spots appear on the succeeding days and form an irregular and somewhat scattered group. The group has become more condensed by November 22, when it consists of a large regular spot, a, closely followed by a number of small spots in a straight line. By November 24 these have all coalesced with a to form one large wedge-shaped spot, the point of the wedge following. The point of the wedge has become detached by November 26. Nov. 12-273 13-156 14-503 15-526 16-234 9 H o 6 2 64 77 66 23 13 '4 '4 3 i 105 77 45 '3 7 207-6 208-1 208-5 208-5 208'5 - 8-6 - 8'3 - 8-1 - 8-1 - 8-3 -71-4 -59'3 -41-1 -27-7 -18-3 Nov. 18-284 19-467 20-291 21-284 22-233 23-225 24-293 25-255 26-273 2 7 28-287 O 5 9 4' 60 81 130 1 60 96 No pho 33 I I 18 149 217 494 726 1114 1017 877 tograph. 264 3 6 22 3 4' 7' 99 73 (73 73 10 142-5 12 '4 2 '9 9 2 '39'4 119 140-2 252 141-0 372 141-6 607 142-0 630 142-9 670 144-5 605 '44' 539 H3'5 - 7'5 - 7' 2 - 7'8 - 7'4 -57-2 -4>'3 -33'9 2O-O - 6-7 + 6-9 + 21-4 + 35' + 50-0 + 62-8) + 75'5 Means ... 6 49 208-24 - 8-28 - 7-2 - 6-9 7-1 Group 1539. A small spot. - 7' 2 - 7'4 - 7'4 - 7'3 Means 45 355 '4 2-2 3 - 7-31 Nov. 12-273 13-156 14-503 15-526 16-234 17-284 2 6 7 o 5 o 8 '5 5 23 15 13 4 8 5 o 3 o 17 18 1 1 '4 8 7 203-0 2O2'7 2O2'9 203-2 203-5 204 o + 77 + 8-2 + 8-6 + 8-6 + 8-7 + Q.Q 76-0 -647 -467 -33-o -23-3 - 8-9 Group 1543. Two small spots. Nov. 19-467 20-291 5 3 45 2 3 4 3 4' 30 239-8 -16-8 238-2 -17-3 + 55' 6 + 64-9 Means 3 13 203-22 + 8-43 Means 4 36 239-00 17-05 MI-II, IN INK S Mu'innr. is IMK YKU:< : 1885. H :raphir 1'osit . s continued. Are* of for On Mean o 24-8 I5-6 128-4 it 01 Longitude tal liaa. imber zi 13. Date. Greenwich Projected Area of Area for Group. M. .:. ; , Up. M. latitude Up. Central an. '.'lino. Umbra. Whole Umbra. Whol.. >!' "544- A smxll ii and - T '547- Kour spots on November 19, two of which an- mrasured together. On Decein thi? group consist* of two lurgi r.'niilnr spots, a ami '.. lly December t a ha* bccoiin- thr Ic.uliT ( n straight ntmun of tniiil! -p"t<. Sumo small spots appear following l> on Drwinlicr J, anil n im'd. Th two streams have coalesced liy December 5, and form a large irregular spot, e, close to hut not touching b. ;-., .184 22- 2V: 24 25- 26 - 6 6 44 33 58 28 12 IS 5 3 12 O 3 o *9 '9 30 '5 n -15-9 -le-i -5-4 -14-9 -'47 o -35M 2: i - 8-2 4- 7'* 4-20-4 4-33-9 4.., -.-. 29-503 3 . 1-203 2-289 3-290 4'45 8 5H79 6-255 744' 8-262 16 No pho '07 103 nl 68 58 3' 1 1 '25 '' ' i 1 "- 810 606 III 671 631 354 33 l l (34 57 53 39 59 434 309 301 377 449 5'3 450 500 12'O 12-8 '3'5 '3'3 '3'4 '33 12-9 3-5 13-1 12-S o 4-14-0 + 12-8 -t-12'6 4-127 + 137 4-14'* 4-I4-4 O -3., . -28-0). 4 lzt ' -'5'43 16-0 - 1-9 : + 26-6 4-39-8 + 50-6 ! 4-66-0 4-7' 'V '545- A few -null! >!- on N . The gro;ip has increased in size by ulier iS. i i nearly continuous chain of .puts. The .ember 19, and only six spots remain. Of these six, , and c, are teen on December i and i. ills 43 368 '3-03 4-3-52 ... 1 -23-0 - 9'o) 4- 5-' + 21-0 4-327) 4-44-3 458-6 Group i 548. A regular spot. N v. 26-273 -87 29-503 30 l>ec. i 64 iapli. 60 ' 389 5') -54 no t.. graph. 204 10* i (.6 3' 33 16 8 37 120 203 '3* 138 '44 109 72-3 73'' 72-9 73-4 73-8 73-8 -15-9 -'5'5 -15-0 -15-2 -'5'3 -'5'4 -'5'5 Dec. 2-289 3-290 5-479 6-255 7'44' 8-262 5 12 9 18 6 O 26 58 5' 49 48 20 7 10 6 10 3 3 o 36 5' 34 28 *5 16 10 306-4 306-7 307-1 307-3 307-4 307-4 - 6-7 - 6-6 -tl - 6-6 - 6-5 - 6- S -68-8 -553 -39-6 -25-8 -IJ'S + 10-9 I Means '9 126 72-97 -15-40 Group 1546. 1 Four spou on November 19. On November 18 they are not readily separable, and are measured in two parts nb.-t i iii'l tin- succeeding days the group ha? become a long straight and al u . .f SJKII'S, large regular ] :,ber 2. The following spots diiniiii%)i in size and iiumlivr rapidly, and all have disappeared by December 8. MR-IMS ... 6 '9 307-10 - 6-56 Group 1 549. A regular spot. It In- y I'e y December 15. Nov. 28-287 29-503 3 1 Dec. 1-203 2-289 3-290 6-ss 7'44 8-262 5 27 No pho 7 102 "4 1 12 100 74 r 5 39 49 222 lograph 60 7 835 846 521 382 3 l8 227 12 33 (26 18 57 58 56 54 43 58 "42 348 409- 465 432 364 293 300 276 293 34 347-8 3447 346-1 347'5 349H 350-2 351-8 352-5 352-1 353-5 354' 6 4- 3'9 4- 4'5 4- 3'9 4- 3'; 4- 3H 4- 3'4 4- 3'3 4- 3'4 4- 3'3 4- 3'5 4- 3'? -80-2 -67- -54<) -42-0 -25-8 -11-8 + 19-4 4-29-2 + 46-2 4-57-0 + 706 Dec. 5-479 16 6-255 19 7-44' 34 8-262 56 9-214 39 10-281 63 11-251 51 12-267 20 13-248 41 14-380 30 15-263 5 66 30 123 23 228 26 292 36 292 21 305 32 320 2 5 262 1 1 |- 4 23 102 21 2' 5 126 '45 '75 186 161 '37 100 72 20 258-1 158-0 -4 259-0 259-0 259-0 *594 219-6 260-2 261-1 4- 4-4 -75-o 4- 4'3 -64-9 4- 4'3 -4 4- 4'4 -38-1 4- 4'4 -25-0 + 4-9 1 0-9 4- 4'9 4- 1-9 4-5-4 4-. 4- 5'' 428-9 4- 5'5 +44 : + 5'4 4-S6-9 Means 4: 3*9 350-29 4- 372 ... Mt-ans 23 131 259-07 4- 4-82 252 AREAS AND HELIOGRAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. Date. Greenwich Civil Time. Projected Area of Area for Group. Moan Longitude of Group. Mean l,;ii iiude of Group. Longitude from Central Meridian. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meiidian. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. \Vh oli- Spot. Umbra. Whole Spot. Group I 550. Two spots, a and b ; b has disappeared by December 10. Group 1 554- A clustei of small faint spots on December io ; able spots. on December 11 two consider- l88 4 . d Dec. 9-214 10-281 15 12 53 31 14 2 5 54 76 o 344-0 346-5 o - 7-0 - 7-3 -f-6o-o + 76-6 1884. Dec. 10-281 o 11-251 8 2 5 87 O 12 2 4 i4- 328-6 329-6 ~ 9'3 + 587 + 7 2 '5 Means 20 65 345' 2 5 - 7-15 / Means 6 86 329-10 - 9'5 Group 1551. Two faint spots measured together on December 9. Only one remains on December io. Group 1555. A somewhat faint spot. Dec. 13-248 14-380 15-269 16-487 17-193 o 10 4 o 16 3 H '4 1 1 3 o 39 58 2 4 9 8 153-2 153-4 153-6 154-0 I53-9 4-15-6 + I5-9 + 15-5 + 15-3 + 14-6 ~77'5 -62-5 50-6 -34' 1 -24-9 Dec. 9-214 10-281 39 2 5 *3 i9 316-0 -12-3 -13-7 + 3I-4 + 46-1 Means 21 315-7 13-00 Group 1552. Two clusters of small s[ ots on December 9. On December io the group consists of two regular spots, a and b, and several small spots between or near them. b has disappeared by December 14. Means 3 28 153-62 +15-38 Group 1556. A lart-e regular spot, a. A small spot is seen near a on De -ember 16-17, ami a second small spot on December 17. On December 19 on passing the central meridian two irregular spots, one of them large, appear close to a. These break up into a number of smnll spots, and have disappeared by December 3.). Dec. 9'2i4 10-281 11-251 12-267 14-380 15-269 36 59 35 30 3 2 6 7 162 439 375 278 166 98 45 ] 9 3 i9 18 22 6 13 85 222 196 I 60 99 75 269-1 269-8 270-8 272-3 273-6 276-2 277-1 io'6 10- 1 I '9-6 - 7'4 - 7'3 -14-9 O'l + 13-7 +28-5 +42-9 + 60-3 +72-9 Dec. 14-380 15-269 16-487 17-193 18-229 19-505 20-21 I 21-508 22-489 2 3 24-273 25-158 36 36 53 62 59 60 75 99 82 No phc 21 I I '54 207 332 406 389 738 612 586 438 togr&pb. 161 99 56 36 37 38 30 38 54 (3 5 6 21 240 206 230 2 47 207 37 312 322 274 216 '58 156 I44-5 '44 '4 I44-5 144-9 I44-7 I45-5 I45-5 145-6 145-2 144-8 H5-4 - 7'5 - 7'5 - 7'4 - 7-8 - 6-8 7-1 - 6-5 - 6-8 - 6-5 - 6-2 - 6-1 --'4 -59-8 -43-6 -33'9 -20-5 Means 18 136 272-70 - 9-17 ... 2 9 + 6-3 + 2 .V5 + 36-5 + 47-9) + 59' 2 + 7''5 Group 1553. A regular spot, n, followed by a stream of small spots. Tiie latter have disappeared by December 15. Means 37 H5 i45- 3 -6-95 Dec. 9-214 10-281 11-251 12-267 13-248 14-380 15-269 16-487 i7''93 8 22 3 46 45 12 13 2 3 76 131 197 2 53 343 178 38 19 13 12 20 21 26 2 5 6 7 i 2 120 138 I 4 6 182 90 21 12 10 214-1 213-9 213-9 2) 6-4 2I5-2 2 1 6-6 223-3 224-9 225-9 -12-4 -12-3 -12-4 -n- 9 -12-3 I2'2 -69-9 56-0 -43-2 -27-4 -15-5 + 07 + 19-1 + 36-8 + 47-I Group 1 557. A small faint spot on December 15. Two close pairs of spots on December 16. The group increases in size on the succeeding dnys and becomes an irregular stream of small spots. Dec. 15-269 16-487 17-193 o 9 34 5 9' 5 261 19 3 5 142 170-2 169-4 169-7 -18-0 2O'O -, 9 -8 -18-7 Means ... 13 9 2 218-24 -I 2-08 - 9' 1 TAKKN AT ' < KKKSWH'II . IS iM'IA. AND IN M ' TO 1885. of Sim Spots i-i .1 Of i for Mean up. Hi Latii Up. tnde fiom ral Mi ii'Iiin. Greenwich Time. Arr of '!' Mean udo 'Up. Mean Utitude up. ! ' . from Central Meridian. Umbra. Whole Spot. Umbra. v. S|H,t. Umbra. Whole Spot Croup i ; ^7 <-o "tinned. Croup 1561. A very large regnl.r followed at a ooiiMdnablr dintame br three i KiualliT sputs, b, e, and il. A number of small p%t* are 1 irly over the intermediate space, a and e bare very dark uml : 1 I 21 1 20 3 ,96 96 16 12 21 "5 204 166 o 1709 172-0 174*1 o -' -1- + + 33'6 + 63-5 -'- -18-6 1884., 1 >l-c. 20'21 1 21-508 22-489 24-273 25-158 26-265 20 9 28-I80 29-218 30-219 31-262 1885. Jan. 1-240 '3 108 202 No plni 224 244 22 1 186 2 3 6 '42 89 44 ' > 225 73 1318 lograph. '499 1930 1605 1631 1304 IOO2 6 93 4'7 168 '43 '7' (150 130 '32 "3 96 '33 9' 7' 53 3' 640 928 1152 1017 882 1041 824 847 727 644 554 39 s o 597 56-0 55-0 5 i 6 56-2 557 56-3 56-6 56-9 56-7 57'9 + 77 + 9-2 + 8-5 + 8-4 + 8-2 + 8-2 + 8-5 + 87 + 8-9 + 9" + 9'4 + 9'4 -794 -66-0 -54-' -41-8) ... 1 5 "5 I-I -45 -19-05 (iroup 1558. A regular spot -29-4 -18-2 - 3- + 9-3 4-22-8 4-36-1 + 497 4-63-2 + 77'2 '"'93 19-505 20-21 1 21-508 489 M 9 i ; 33 56 No pho '3 10 IO2 T2 206 254 203 2 1 2O 21 3 '7 ('4 i i 8 7 o 158 116 12O 1 12 130 "9 108 106 54 it, 101-6 lor; 101-3 101-7 102-2 I02S IO2-7 1O2-9 103-2. 102-7 103-0 -'39 -'3'4 -'3-3 -13-6 -13-0 -13-1 -13-0 -13-0 -77-z -3 - 19-8 - 6-6 + 5'4) + '7'3 + 29-3 + 43'4 4-56-1 MIMIIS 104 780 56-59 4- 871 ... 13 o -12-7 -It Croup l 562. Two small apots. 1 '5 106 102-3O -13-15 ... ip 1 559. alar spot. A am r it on December 19. 1884. Dec. 25-158 4 48 2 ,j 89-4 ~'3'4 + '5-5 18-229 19-505 2O'2l i 21-508 24-*73 26-265 1 ; 59 12 IO4 2 1 65 '5 53 24 38 photograph o 38 3 16 5 2 2 10 5 8 12 - 1 2 (6 o 2 s 69 28 20 21 22 1 I '9 3 I06-8 I08-3 1099 iii-S 112-4 112-8 113-2 113-2 ii. Vi 113-5 + 7'4 4- 4- 8-1 4- 8-8 + 8-7 4- 8-8 4- 8-9 4- 9-0 + 8-9 + 8-5 -58-4 -40-1 -29-2 -10-5 + 3-3 + '5'5) + 27-6 + 39'3 + 53'8 4-66-6 .Mi-mi.-. ... 2 15 89-4 -13-4 Cioup i 563. ^ular sjiot, a. A small spot, 6, is seen preceding it on December 16 ai. and ai.jtliiT, , on December 19 and 30. A fourth i>ot, IN M Are) Umbra. \ : i i - up. iiui 1 Mf.ui Uti fontim Date. Grer: rime. Pmi Longitude :ral Man. Greenwi. -h : Arm for Group. M . . i "ii]'. Meridian. I'mbr.. Umbra, Umbra. :]' 1 566. .! on .l.muary 7. ''I 1 ' 57- Three small apotn a, b, and e ; a has disappeared by January 15, A by January i j. l8S. Jan. 12-499 13-470 14-218 15-236 16-292 17-217 ' t 46 30 >5 9 4 ,1? 161 4' 40 12 4 H| 1 5 3 5S 84 22 *3 8 e I72-2 I7I-8 171-5 169-6 170-3 I7O-I 18-9 -18-6 -18-8 -i 8-6 -18-7 -18-7 2O 1 - 7-8 + i 4-13-3 + 27-8 H-39'9 1-240 2-282 3-239 4'45 5''75 6-469 8-450 9'5'7 o 2 1 4' 9 '5 5 o o o 44 76 4 4 *4 44 34 29 12 5 16 8 3 54 82 76 93 23 20 21 12 282-2 283-2 285-4 ;-8 ;-o 1-9 290-6 291-5 292-6 o -'3-5 -13-6 -5 -43 28-9 -15-2 - 3-8 4-15-2 4-31-8 4-457 4-60-9 127 -13-2 -127 -12-8 -127 ~' 3 'i - 12-6 Menus 11 47 170-92 i - Three small s i- by 18. have mov each othei (Iroup 1571. x>ts, , b, nml t, "ii Jimmy 15 ; b has dinappeared by January 17, Tin- group l"iMi- H compart cluster on January 15, but a and e nl in l.miu'lf liy January 16, no that the three spots then follow on nearly the same parallel of latitude. .:i* 7 187-01 -12-99 . ". followed by two or three small faint spots, several changes and are usually measured together as one. latte - 4-0 - 4 ' - 4-6 - 4-0 undergo -SS'S -22-5 - 87 4- 3'9 '!' i 573- s'nall fniiit spots on January 18. Th.- ""] ' "^ in M iiiU.iivzo. ' .mil one small in iMiig.lny-. the direction of ' ; these spots combine to lurm a Jan. : 3'*39 4-245 5-175 <4 "9 S 2 9 6 65 I 1 1 5 7 9 32 34 56 291-4 191 292-3 292-7 .1:111. |8'212 '9 20-186 H-lSj 22-214 169 l6o 53 tograph. 1014 940 948 (40 -9 99 ii J 27 282 537 549 664 111! in 1 104 109-2 108-9 - 6-0 - 6-2 - 6-4 - - 56 - 6-0 + ' 4-I9-3 4-31-1 4-44-4 Means 5 44 292-05 - 4 18 256 AREAS AND HELIOGEAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group Longitude from Central Meridian. Date. Greenwich Civil Time. Projected Area of A ma for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. 1 Whole Spot. Umbra. Whole Spot. Group 1573 continued. Group 1 577. A small spot. 1885. d Jan. 23-366 24-225 25-542 141 125 916 603 49 139 177 o 887 872 300 o 108-4 108-0 1 06- 1 - 5'' - 4-8 - 3'2 o + 59"' + 70-1 + 85-6 1885. (I Jan. 22-214 I 9 I 10 358-9 o + 0-9 -65-6 Means I 10 358-9 + 0-9 Means | Si 5'5 109-1 1 - 5'44 ... A regular spot, a Group 1578. Two small spots are seen near it on January 28. Group 1574. A small spot, a, on January 20. Two others, b and c, have appeared near it by January 21 ; a has disappeared by January 22. A fourth spot, d, is seen on January 24. Jan. 24-225 25-542 26-246 27-473 28-220 29-148 30-552 31-187 Feb. 1-387 7 7 17 12 3' 26 12 '3 O 34 58 I 21 127 I 4 2 IOI 82 87 3 6 '3 7 "3 7 '7 '4 6 7 o 65 55 94 77 79 54 44 49 2 3 324-9 3H7 324-5 324-7 3 Z 4'3 324-6 324-8 325-1 325-4 + 11-4 + 1 -6 + i '4 + ' 7 + ' 7 + i -7 4-12'Q + 11-7 + I1'9 -73-0 -55-3 -46-9 30-6 2 I'l - 8-5 + 10-2 + l8'9 + 34'9 Jan. 20-186 21-183 22-214 23-366 24-225 25-542 26-246 7 4 9 o o o 38 62 48 62 36 33 10 4 2 5 21 32 2 4 34 22 27 12 72-5 72-8 70-9 70-4 707 70-8 73'7 + 8-1 + 7-6 + 7-3 + 7-2 + 7'3 4- 8-0 + 7'5 -18-6 - 5'3 + 6-4 + 21-1 4-32-8 + 5'3 + 62-3 Means ... 2 25 71-69 + 7'57 Means 9 60 324-78 +11-68 Group 1575. Two small spots on January 20. The group has increased in size by January 21, on which date it consists of a regular spot, a, followed at a little distance by a large irregular group ; this group, which consists of a number of small spots, changes rapidly from day to day. Two spots combine to form b on January 24 ; a has disappeared by January 27, and b has divided into two spots by January 28. Group 1579. A regular spot, a, followed by a number of scattered small spots. The group appears suddenly near the centre of the sun. The following spots gradually disappear, and a alone remains on January 29. Jan. 25-542 26-246 27-473 28-220 29-148 30-552 31-187 36 20 '4 18 1 1 o 212 182 208 I 3 8 70 I 2 9 '9 10 8 i i 8 o I 10 92 I 10 80 5 13 '4 11-5 13-8 12-9 4'4 16-7 16-3 167 + 4'5 - 9' + 4'7 + 2-4 + 4-8 +17-6 + 5-1 +29-0 + 5'8 +43-6 + 5'7 +617 + 5'9 +7'5 Jan. 20-186 21-183 22-214 23-366 24-225 25-542 26-246 27 - 473 28-220 29-148 10 20 59 48 109 80 64 34 24 18 7z 244 347 545 399 . 368 438 215 199 102 16 18 39 27 57 4' 33 20 15 '4 ''3 223 235 39 207 187 222 121 126 79 18-8 20-8 22-3 22'0 22'I 23-I 23-3 22- 9 23-3 23-0 IO'O - 9-6 - 87 - 8-1 - 8-1 - 8-3 - 8-9 - 9' - 8-7 - 8-1 -72-3 -57'3 42-2 -27-3 -15-8 + 2-6 4-11-9 4-27-6 + 37-9 + 49 '9 M eans ... 8 67 14-61 + 5-2i Group 1580. A large regular spot, a, followed by a number of small spots, a has broken up into three parts by February 5. They are, however, still measured together as one on that i ay. On February 6 only two of the three parts remain, and these are measured separately. The small spots following a have all disappeared by February 2. Means ... 28 182 22-l6 - 8-75 Group 1576. Two small spots, a and b, on January 21. Both have moved forward in longitude, and b has also shown a motion in latitude by January 22. Jan. 25-542 26-246 27H73 28-220 29-148 30-552 31-187 / 52 96 123 170 125 236 82 21 282 78 515 82 645 8j 898 102 8 57 6 5 987 I2O 226 426 438 449 54' 447 500 300-1 299-8 300-6 301-1 300-9 301-4 301-2 -'3'i -13-7 -'37 -13-8 -14-0 H-o -80-4 -71-6 Jan. 21-183 22-214 5 5 56 24 3 3 30 15 9O-I 9 I-1 4-10-6 + 11-3 + 12-0 4-26-6 547 -44'3 -32-2 1 V2 Means 3 *3 90-60 + 10-95 -13-8 - 5 -0 TAKES AT; GREKNWKII, IN IXPIA, ASP IN MAURITIUS, IN TUB VKABS 1882 TO 1885. s :iiif UlOllp. Jl.n Latitude of Group. Longltudr fiom Central Meridian. Umbra. Umbra. Umbra. Wl,.,!,' S|-l. Umbra. Spot Group 1580 continued. Group 1585. A small faint pot. |8>- 1-387 *'457 3-220 4'447 S-JOO 6-173 120 1 I 1 104 54 38 *3 1015 8*3 685 48; 296 '*5 ''3 62 64 44 47 5' 5** 458 4" 43 365 281 3017 30*'3 302-2 33'5 303'* 305-6 -'37 -'33 -'3'5 -'3'3 ~'3'4 -12 8 4-11-2 +25-8 + 35-8 + 53'* + 66-9 + 78-2 1885., Jan. 30-552 31-187 Feb. 1-387 O 3 O .6 18 9 3 '3 20 21 9-0 9'4 9-8 12-1 -12-7 -12-8 + 54-4 + 632 -r-79'3 Means ... ... I 18 9-40 -12-53 '.3 ... 7* 4*' 30182 -3'55 Group 1586. A regular spot. A very am.ill sp-it is seen near it on February 6 and another on February 9. Group 1581. Two small spots. A third is sen on January 18. Jn. 17 4-; sS'aao o 59 5' 60 89 54'* 57-6 + IO'O + 9'* + 58-9 + 72-2 Jan. 30-552 31-187 Feb. 1-387 *"457 3-220 4+47 5-500 6-173 7 '499 8-153 9-480 10-509 16 So -6 67 I' 62 58 58 33 28 '3 7 59 190 263 3" 369 39* 3*o 3'* *3* 230 130 5 *3 S3 55 39 3' 3' 30 3' 21 21 '5 16 86 201 188 196 '97 '99 164 168 '49 >7* lit 245-0 *447 *45'4 *457 2464 247-1 247-1 247-6 248-0 248-3 248-6 *47'5 + 0-7 + 0-8 + 0-9 + '3 + '* + "6 + 7 + i + '9 + 3 + "4 + "3 -696 -61-5 -45 ' -30-8 20'0 - 3'* + 10-8 + 20-2 + 379 + 468 + 64-5 + 77'' Means ... ... 75 5 5 '9 + 9-60 ... Group 1582. Two itnall spot*, a and b. A third spot is seen on January 17, and a fourth on January 29. *7'473 28-220 29-148 8 21 I I 68 70 76 ,1 12 43 5* 8> 3*9 33'5 36-3 - ''4 - ''5 - ''4 + 37'6 + 48-1 + 63-2 Means ... 3' 166 246-78 + i 60 ... Means ... 11 60 34'*3 - ''43 ... Group 1587. A number of small spots irregularly scattered over a considerable area. The group becomes somewhat more scattered, and the spots decrease in r.a until they have paased the central meridian on February 7. The following part of the group then rapidly increases in iz, and becomes more coratnct, the individual spots coalescing with one another until on February u the group consist* of three large spots so close together aa almoat to form a aingle very large spot. These have broken op l.y February 13. The preceding pirt of the group ha* disappeared by February n. Group 1583. A small spot. Jan. 29-148 7 16 3 8 34 6 7 - *7 + 13-6 1 Means * * 3 8 34 6 7 - *7 ... Feb. 1-387 *'457 3-220 4>47 5-500 6-173 7*499 8-153 *5 39 28 30 68 49 85 76 *'4 ,76 9' 21 O 169 *94 3'3 335 *45 *43 646 "4* 1019 888 809 200 57 3* 3* '9 if 37 26 44 94 *7 '*5 75 3' o 219 + 216 '94 130 "4 2 3S 604 60; 619 661 291 200 2*2-5 222-3 222 5 22 I'O 2199 220-4 216-2 215 2 "49 2138 157 214-6 217-6 -'47 -'47 -14-1 -'54 16-0 -16 i -18-6 -18-6 -18-5 -187 - 18-9 19-0 -18-6 -68-0 -54'* -43'9 -29-3 -164 - 7 - o + 6-1 + '37 + J- + 434 + 5*3 + 7' ' 4-SjT Group 1584. 1 Several small spots irregularly distributed. They are measured tognl.tr on January 19, in two clu-itera on January 18 an 1 30, an 1 in three on January 31. On January 19 a small spot is seen following the group at a little distance. 1 Jan. 28-220 29-148 30-55* 1 3'-'87 7 4 o 2 >5' 82 5' 53 6 3 i 136 60 28 28 288-8 286 i 290-5 289-4 -12-8 -13-2 -13-6 -,3-6 -56-6 -47'0 -24-1 -16-8 9-480 10-509 11-191 '*'545 13-288 1 I Means 1 ... ... 3 63 28870 -13-30 ... Means 5' 34* 218-05 - 17-08 ... PHOTO-HBLIOGRAPHIC RESULTS, 1882-1885. 2 K 258 AREAS AND HELIOGRAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS AREAS and HELIOGRAPHIC POSITIONS of GROUPS of SUN SPOTS continued. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Centra! Meridian. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Group 1588. Several smnll spots arranged in two compact clusters. Group 1592. A large irregular spot, a, closely followed liy a large regular spot, 6. a has broken up by February 13, forming two spots, c, a regular spot, and d, an irregular spot with several umbrae, d breaks up yet further, ami diminishes in size on the succeeding days, but remaining a compact cluster is measured as a single spot. It has disappeared by February 17. On February 16 and the succeeding days, the group is almost entirely made up of the two Inrge regular spots, b and c. Two or three very small spots are seen in the neighbourhood of the large spots on February 10, 15, and 19. 188 5 . Feb. 2-457 3-220 4-447 o 13 3 27 61 64 7 2 '5 32 34 263-9 262-7 262-4 -23-9 -23-5 23-2 -12-6 - 3-7 + I2-I Means 3 27 263-00 - 2 3-53 ... 1885. d Feb. 8-153 9-480 10-509 11-191 12-545 13-288 I4-330 15-158 16*15 ' o 2 7 87 63 '45 144 "9 74 70 76 20 3' 1 1 65 3 2 5 47' 652 856 771 837 587 520 399 240 179 80 O 35 75 45 82 76 59 37 38 47 '5 3i 18 479 424 406 461 480 406 419 295 278 249 189 179 '33 I 15-0 I 16-3 1 15-6 i i6-o 1 16-7 n 6-6 116-5 1 1 6-6 1 16-5 117-1 1 16-7 117-3 "59 o -86-5 Group i 589. A large, irregular spot surrounded by several smnll spots. It appears suddenly on the disk, not at the limb. The large spot has broken up by February 5, and the group then consists of a large regular spot, a, closely followed by a number of small spots in a long stream. The following spots gradually diminish in size and number, and on February n a remains alone. - 5'6 - 6-1 - 6-2 - 6-0 - 6-2 - 6-3 -6-4 6-4 -67-8 -54-8 -45'4 26-9 -'7 - 3 - 3'6 + 7-3 + 20-3 + 37-1 + 5i-4 + 60-6 + 73'3 Feb. 3-220 4-447 5-500 6-173 7 '4 99 8-153 9-480 10-509 1 1-191 9 1 138 171 183 127 104 54 28 10 477 946 964 1017 854 706 364 239 i*7 5i 70 86 95 74 70 53 49 39 265 480 484 526 508 469 355 399 487 239-9 240-9 240-8 242-4 242-5 242-5 4t'4 243-3 244-2 - 4'6 - 47 - 47 - 4-6 - 47 - 4'3 -26-5 - 9'4 + 4'5 + 15-0 + 3 2 '4 + 41-0 + 59-3 + 72-9 + 82-8 17-371 18-490 19-146 20-216 ~ I' 9 - 6-3 - 6-2 - 6-3 Means 43 338 116-37 6'02 - 4" 2 - 3'9 - 37 Group 1593- A large regular spot, a. A small spot is seen near it on February 12 and another on February 14. Means ... 65 44' 242-21 - 4-38 Feb. 10-509 11*191 '2-545 13-288 I4-330 15-158 16-151 I7-37I 18-490 19-146 20-216 2 ''433 22*203 4 '4 7' 77 65 82 7' 96 5' 73 60 30 '5 53 146 39' 460 430 505 5'5 533 372 383 279 139 152 13 6* 55 38 44 36 5 2 l 46 48 39 37 '74 248 34' 325 2 49 269 262 279 203 243 221 184 374 89-8 89-1 89-6 90-5 91-2 92-1 92-4 93-' 93-1 93'5 92-7 937 94-0 + 3-9 + 3-8 + 4-0 + 3'6 + 3'2 + 3'5 + 3'3 + 37 + 37 + 3'8 + 3'8 + 3'9 + 3'9 Group 1590. Two small spots on February 7 and 8, but the following spot on February 8 differs considerably in longitude and latitude from the following spot on February 7. Both spots have broken up by February 9, each forming a compact cluster of small spots which are measured together. SOD -72-3 -54-0 -43'4 28-9 -17-2 - 3'8 + 13-' + 27-8 + 36-8 + 50-1 + 67-0 + 77'6 Feb. 7-499 8-153 9-480 10-509 10 12 8 7 38 96 140 44 6 7 6 6 21 56 101 4 2 229-2 229-4 229-6 228-1 21'0 2O- 1 2O'9 20-7 + '9'i + 27-9 +45'5 + 577 Means ... ... ... 6 55 229-08 20-68 Means ... ... 40 259 91-91 + 37 Group 1591. Three very small spots in a compact cluster on February 7. These hive disappeared by February 8, and the three small spots, a, b, and c, are seen, a has dis- appeared by February 9, and another spot, d, has appeared in the place of the original cluster, c has disappeared by February 10. Group 1594. This group undergoes frequent and striking changes. On February 1 1 it is an ill-defined spot. On February 12 two close clusters of small spots. On February 13 three spots. On February 14 other small spots are also seen. On February 15 two large clusters of spots. On February 16 a long stream of spots following each other so closely as almost to form a single spot. The preceding spot, a, is the largest and best denned. By February 17 the stream has begun to break up, the last spot, b, has become clearly isolated by February 18, the centre spots fade away on the succeeding days, and by February 20 only a and b remain. Feb. 7-499 8-153 9-480 10-509 4 7 6 16 114 ? 63 2 4 3 o 8 63 5' 35 185-8 189-4 187-6 187-6 + 10- 1 + 13-3 + 10-4 + 97 -24-3 I2'I + 3-5 + 17-2 Feb. 1 1-191 12-545 13-288 2 18 '4 49 73 97 4 18 ii 9 1 7i 75 85-6 84-3 857 20-6 -75-8 -59'3 -48-2 Means ... 2 39 187-60 + 10-88 ... -21-7 TAKEN AT < iKKK.SWIU!, IN I.NI'IA, AND IN MAUl'lIlUS, IN II IK VKAK8 188^ 1') i ABKA.S an 1 UKUOGKAI-HIC POSITIONS of GROUPS of SUN SPOTS continued. Date. :ivieh Time. Projected Area of Area (-T up. M. .:. itude :uup. Hi ,:. Latitude of Group. . ituili from Central Meridian. Hi-.. . Greenwich Civil Time. I'! ; '. i Area of Ana for up. Mean Longitude of Group. Ki ... Latr Longilad* : .;,. Central Meridiaa. Umbra. Whole Spot Umbra. \Vl,,,lu Umbra. WI...1 U Spot. DM 1 1 Wholi- Group 1594 continued. Group 1597 continued. 1885. d ' 14-330 15-158 16 i 51 >7'37' 18-490 19 146 2O'2l6 "433 22-203 9 60 108 168 109 66 56 *7 5 "5 57 1005 997 817 59^ 3>8 203 107 12 34 57 88 60 4 4 '9 10 70 282 528 5-* 454 356 261 "5 203 88-8 87-9 87-0 88-0 87-6 88-0 88-4 90-6 9*7 -21-8 -21-9 -21-8 -21-5 -21-7 -21-5 -216 -"3 -r6 -JI'J -21-4 - 92 + 80 + 22-3 + 3''3 + 45'8 + 63-9 + 76-3 1885. I'.b. 16-151 '7'37' 16 3 '33 22 'j 120 38 152-7 S4'5 -5'4 -14-8 + 5-5-5 + 74-5 Means ... ... 8 6l 152-5. -'5'34 ... Group 1598. The group consist* of two small s|M>U ou each day on which it is seen, but it is sot clear that the s|M>ts art the same on each day. .-. 34 262 87-88 21-50 Feb. 13-288 '4'33 15-158 o 2 3 4 54 I 2 5 4 3 847 84-4 83-3 + 4'0 + 5-6 + 5-4 -492 -357 26-0 Group A stream of small spots. The spot* oliai '595- - in number and area fiom day to day. Means > 1 *5 84-13 + 5' Feb. 12-545 13-288 14-330 15-158 16-151 17-37I 4 3 10 8 o 45 66 120 3' *3 '3 3 2 6 4 o 34 4* 67 16 iz 7 93- 95'3 95'3 98-9 99-8 99-8 -15-8 -16-1 -162 15-9 -50-4 -38-6 -24-8 -10-4 + 3-6 + 19-8 Group 1599. Two small spots, a and b. b has disappeared by February 17. 16-0 -'57 Feb. 15-158 16-151 17-371 o >5 o '3 3 11 O 10 7 *S 10 136-6 136-0 140*0 -16-1 -15-8 -14-9 H-*7-3 + 39'* + 60-0 ... 3 30 97-05 -15-95 ... Muans ... 3 '4 '37'53 Group 1596. A regular spot, a, followed liy a few small Mattered spot*. Group 1600. Three vrrv small spots. Two of these are measured together on Fvbruaiy 15. One member of this pair has disappeared by February 16, and another spat has broken out 12-54; 13-288 14-330 I5-I58 16-151 17-371 18-490 19-146 2O'2l6 2'-433 22-203 23-511 6 '9 *o 54 5' 73 60 39 27 20 12 O 57 i*7 77 284 306 363 366 367 'S 6 2 5 < 36 9 '9 '5 34 28 37 3* 22 18 18 '5 o 85 130 129 174 168 1 88 '95 207 106 60 7o 120 74-6 75'" 76-0 77-1 78-1 79-0 78-3 79-2 79'4 80-7 81-1 79'4 + 8-9 + 8-3 -r- 8-3 + 8-4 + 8-* + 8-8 4- 9'o + 8-6 + 8-2 + - + 8'4 + 8-0 69-0 -58-8 -44-1 -32-2 -18-1 i-o + 13-0 + 22-5 Feb. 15-158 16-151 o 9 1 1 o 12 to 39'9 4''4 - j-8 - *'9 -69-4 -54-8 Means ... o 11 40-65 - 3'3S + 36-8 + 54' + 647 + 80-1 Group 1601. A small regular a-xrt, a, on February 16, followed by sereral Tery small tpob. :/.e on the su ceding days. The tmsll spots which follow it uiidri|{0 constant change*, aud have all disap|arcd by February at. Means ... 21 136 78-1- + 8-47 ... Feb. 16-151 17-37' 18-490 19-146 20'2l6 2'-433 22-203 j-511 4 12 32 *7 64 36 28 5 37 15* 219 291 *54 213 '43 4' 2 ,1 '5 37 26 26 8 22 79 109 151 45 >54 132 "' 69-0 69-6 719 7*'3 72-0 73'5 74'4 73'3 -2 7 -Z -10-4 -i- 6-6 + i>6 + *94 + 46-8 + 58-0 + 74- Cro ij. 1597. A (mall spot, a. Other mna.i sjiots arc -i-en near it ou February 14 anil 15, anil form with it au irregular scattered group. 10-9 -10-8 _ 9-6 IO-2 10': - 9'7 - 9'4 - 9'5 Feb. 13-288 14-330 15-158 20 12 27 o IO7 12 .,5 8 1 4 152-4 63 1521 76 1509 -'5'4 t -./i + .8-5 + 32-0 + 4i-f> I) 6 1 5'5 Means ... s "7 108 72-00 10-04 2GO AREAS AND HELIOGRAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS AREAS and HELIOGRAPHIC POSITIONS of GROUPS of SUN SPOTS continued. Date. Greenwich Civil Time. Pi ejected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Whole Umbra - Spot. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Group I 602. A vt ry small spot on February 16. A close pair of very small spots on February 17. Group 1607. A spot, a, of very irregular shape on February 20, with two small spots n?ar it. These latter have disappeared by February 21. a has broken up into a number of small spots by February 23. Only one spot remains on February 24. 1885. Feb. 16-151 3 o 8 6 33-6 33-3 - 2-6 - 3-2 O -62-6 -467 1885. Feb. 20-216 21-433 22-203 2 V C 1 I 5 2 9 22 9 2 65 "95 318 93 10 4 17 12 4 i 47 113 169 48 5 357-2 357-4 0'2 -45-8 I9'O Means 5 33-45 2-90 + 0-3 Group 1603. A small spot. 24-45 1 + 2-0 + 10-4 Means ... ... 8 76 357-40 + 0-30 ... Group 1608. A single spot, a, on February 20. A second spot, b, has appeared by February 21, and has disappeared by February 25. Feb. 18-490 12 o 8 100-3 + 10-8 + 35'0 Means o 8 100-3 + 10-8 Feb. 20-216 21-433 22-203 23-511 24-451 25-167 9 '4 6 10 4 o 46 57 87 34 36 15 1 1 1 1 4 5 2 O 56 43 57 '9 18 8 337'Q 335-6 336-8 338-1 339" - 9 -6 66-3 Group 1604. Two small spots, a and b, on February 19. Only a is seen on February 20. - 9'4 ~ 9'5 ~ 9'5 - 9'2 ~ 9'5 -497 40-8 -22-5 - 8-8 Feb. 19-146 2O'2l6 3 57 o 24 2 O 47 107-7 109-1 + 6-0 + 51-0 + 66-5 Means ... 6 34 337-I5 - 9'45 ... Group 1609. A small spot, a, on February 23. Two other small spots, b and c, have by February 24. appeared Means I 39 108-40 + 5-50- Group 1605. A very small spot. Feb. 23-511 24-451 25-167 26-159 5 4 20 30 24 H o 4 3 o 23 25 16 8 2 94'4 293-8 295-3 295-0 - 5-8 - 6-0 - 6-0 - 6-1 -64-9 -53-1 -42-1 -29-3 Feb. 20-216 5 5 IO2'6 16-9 + 60-0 Means 2 18 294-63 - 5-98 ... Means O 5 102-6 169 Group 1610. A small spot. A second is seen near it on February 28. Group 1606. A small spot on February 20 ; five very small spots on February 21 ; four small spots, three of which are measured together, on February 22. Two of these fuur spots, a and b, have greatly increased in size by February 23. A few very small spots, measured together, are seen between them on that day. The group undergoes yet further changes on the succeeding days. Feb. 24-451 25-167 26-159 27-207 28-216 3 15 20 20 5 22 O 2 2 23 21 16 3 13 278-8 278-8 279-4 279-2 276-8 + 16-5 + 15-9 + 16-0 + I5-9 + 16-1 -68-1 -58-6 -44'9 -3 ''3 20-4 Feb. 20-216 21-433 22-203 83-511 24-451 25-167 26-159 7 24 2 42 40 1 88 53 446 5i 447 20 319 II 4 2 4 i 20 3 33 '5 I 2 12 21 9 6 249 283 237 44 27-2 26-1 25-7 25-5 25-5 25-6 26-3 - 9'9 -15-4 Means I 15 278-60 + 16-08 10 5 -10-7 io'6 10-9 -11-4 + 9-3 + 26-2 +38-6 +48-2 + 62-0 Group 1 6 1 1 . A small spot. Feb. 25-167 o 37 i 23 14-6 0'2 +37'2 Means 16 '35 25-99 -10-59 ... Means o 23 14-6 0'2 KKNWIr-lt, IN I.Nl'IA, ASH IS MAIIUTirs, IN TIIK YKAR8 1882 TO 1885. 1 AUKAS nn 1 HKM'XiKArmc I'DSITIOSS of GitorjPS of SUN SPOTS continued. Date. Greenwich ROM. Area of Area for Group. M itude iroup. Mean Latitude of Group. Longitude from Central Meridian. Date. Greenwich Civil Time. Projected Are* of Area for Group. M Longitude of Group. Mean Latitude of Group. Longitude !: . Central Meridian. I'tnhra. V' ; Umbra. Whole Umbra. Whole -;' Umbra. Whole Group 1611. 1 A la;. er an 1 size on the succeeding dayi, and |.;.r - '; (i. O.i March 3 ami tlie succeeding day* some Miiall >poU are Men n !. n( 11. a diminish-* in -it* from day to i lure coalesced by March 5 t.. form a large regular |>ot b. Group 1614 eon/r 1885. Mar. 6*192 7H93 8-175 9-482 10-465 11-493 105 '79 ii- 98 18 3 1465 '443 1623 77> 353 59 109 107 77 89 3' 7 766 850 1078 7H 5" 116 *3*'3 132-4 131-9 233-0 1338 116-7 -11 3 -17-5 -18-0 -18-1 18-0 to-8 -(-13-8 + 31-0 + 4'5 + 57-8 +71-6 + 7-i 1885... Feb. 16-159 27-107 28-216 " r - ''44 2 2-581 3-161 4'4>6 6192 7H93 8-175 1 9-48i 10 5 66 61 4" 86 89 79 109 7 60 '3 'i 9 160 44' 559 45' 580 618 1047 -84 499 + '7 122 11 54 39 11 43 45 43 61 5' 53 12 310 3 f 365 35* H4 300 318 554 447 361 374 201 245-1 143-8 144-1 H39 145-1 144-8 146-0 146-4 247-0 248-0 248-8 247-8 - 1-9 - 3'5 - 4' - 37 - 3-6 - 3'6 - 3-6 -y* - 3-' - 3-o - 3'' -79'Z -667 -53-0 -37'* Means ... ... 66 57 131 60 -I8-.4 ... 2O'9 -13-6 + 4-7 + I9-7 + 28-5 + 46-6 + 56> + 72-6 Group 1615. A small spot A second is seen near it on March 5, and if measured with it. Feb. 28-216 Mar. 1-442 1-581 3-161 4'456 5-573 18 10 14 '5 44 53 4' 28 26 16 7 9 *3 4 39 *7 16 '4 130-1 119-2 227-9 117-4 117-5 130-5 + 17-5 + 18-4 + '9'5 + 19-6 + '97 + 18-5 . Means ... ... 46 346 145-91 - 3'45 -67-1 -5I-9 Group 1613. A small >i't, a, on Febraary 17. A second b is siea on February z8. a has 1 by March I. -38-1 -31-0 -, 3 -8 + 3-8 Means ... ... 5 *7 228-77 + 18-87 Feb. 27-207 16 Mar. 1-442 1*581 3-161 4'45 6 o 9 3 6 9 8 5 77 Bi 2 2 to 1 10 10 4 5 o 11 58 60 5> 7 '4 234-4 236-1 236-2 236-9 *37'4 238-8 + 16-3 + 15-3 + 157 + 15-6 + 15-3 + 15-6 -6-1 -61-1 -44-9 -29-1 21-0 - *'5 Group 1616. A small spot illS ... ... 5 37 23663 + 1563 ... Mar. 2-581 o 8 o 5 2518 + 17-8 -14-2 Group 1614. A small s|*>t on February z;. This has greatly increased in size by February 18, another spot of ubont the same area has appeared following it, and a xmall sjot .if it Tlie group rapidly increases in size on the succeeding days, and forms two irregular stream* of spots which together enclose an immense area. The leading s|iot, a, of the northern stream has become a regular spot by March z, and increases in size on the f '!lowin,; d iv-. Tin- prc.-eding spots of n stream have coalesced to form a Wge irregular spot, b, by lurafa 5. Tl,i- .wever, divided into two sjnits by March 8, and re-combined .rch 9. The two streams have become intermingled by March 6, and the entiir group undergoes continual changes. Mi-uis * o 5 151-8 + 17-8 ... Gro-ip 1617. A large spot, with a small companion appearing suddenly near tbt centre of the diik. The l.'irjje *p"t has begun to break up by March 5, and other pot have appeared near it ; but as the group is still Terr comj*cl, it is nieasui. on that day. It ha* become more scattered by March 6, and diminish'* in size after that day. : 27-207 28-216 1 Mar. 1-442 2-581 3,6, 4>56 3 Z 9 64 90 1 80 240 118 10 232 542 101 5 099 1608 1259 8 36 49 55 101 'I 5 61 25 **J VI 626 626 831 646 229-8 130-5 231-1 231-5 131-7 232-1 232-8 -iS-8 -20-7 -16-8 -.6-5 -16-7 80-7 -66-7 -49'9 -34'5 -26-7 - 9' 1 + 6-1 Mar. 4-456 5-573 6-191 7'493 8-175 67 20 9' 3 4 35' 709 73* 353 83 35 12 60 6 184 4'4 474 3'8 118 257-2 257-3 158-3 158-7 *59"7 -, 4 -, -13-6 -3'5 ~'3'4 13-6 -4-I5-9 + 3-6 + 39-8 + 57'3 + 67-3 -17-0 Means ... 324 158-24 -1364 262 AREAS AND HELIOGKAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS AREAS and HELIOGRAPHIC POSITIONS of GROUPS of SUN SPOTS continued. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Group 1618. A large regular spot, a, with occasionally a small spot or two near it. T of a appears abnormally large on March 6 and 8 ; this is probably c manner in which the photograph has been developed. Group 1621 continued. le umbra ue to the 1885. Mar. 13-488 '4'333 3 4 13 '3 2 7 2 7 o 121-5 122-5 -21-5 -21-4 o - 0-9 + 11-3 i885. d Mar. 4-456 5'573 6-192 7-493 8-175 9-482 10-465 u-493 12-412 13-488 H'333 15-482 16-281 6 28 62 58 HZ 60 78 6 56 55 33 3 20 103 199 232 381 419 456 522 4*7 33' 250 228 '74 130 16 34 60 39 5 3i 39 34 3i 35 25 33 35 283 269 "1 256 250 237 262 221 I8 3 162 173 200 223 '59'3 1597 158-8 '59'4 I59-5 159-6 159-6 160-0 160-4 160-7 160-3 1596 159-8 e -15-9 i o-o 82-0 67-0 -59'7 -42-0 -3^9 -15-6 - 2-6 + 11-4 + 23-9 + 38-3 +49' 1 + 63-6 + 741 Means ... i 18 120-70 19-82 ... -15-9 -157 -15-8 -I5-3 -15-2 -15-2 -147 -15-0 -14-8 -14-6 14-6 Group 1622. A large regular spot, a. It gradually lengthens out, and lias divided into two spots, b and c, by March 15. c diminishes in size on the succeeding days, and has broken up into a number of small spots by March 18. A few very small spots are seen near the principal spots occasionally. Mar. 10-465 11-493 12-412 13-488 I4-333 1 5-4.82 '9 28 75 I 12 80 71 S 2 70 39 22 II 2 7 2 116 292 388 538 539 663 537 416 288 178 70 76 21 44 34 63 74 46 37 26 38 23 15 ii 36 10 277 348 326 353 309 345 273 222 172 127 70 102 9 1 85-1 84-8 847 84-4 84-7 86-1 86-1 86-0 86-9 87-4 87-7 88-5 90-2 + 5-i + 5'9 + 5-2 + 5'i + 5-2 + 5'4 + 5'i + 5'6 + 5'3 + 5'o + 4-8 + 47 + 4'7 -77-1 -63-8 -51-8 Means ... 38 226 159-75 -15-28 380 -26-5 9-9 Group 1619. A few very small faint spots following Group 1612. They form two clusters on March 5 and 7, but only one on March 6 and 9. No trace of the group can be detected on March 8. 16-282 I7-444 18-452 >9'43 20-579 21-173 22-205 + 0-6 + I5-9 + 30-0 +43'4 + 58-8 + 67-5 + 82-8 Mar. 5-573 6-192 7 '49 3 8-175 9-482 O o o o 3i 8 18 18 o 16 4 1 1 17 235" 1 237-8 235-3 234-5 - 4'9 - 5'i 5'5 + 8-4 + i9'3 + 33'9 + 59'3 Means ... 35 232 86-35 + 5-i6 ... -*6-o Group 1623. A few very small spots irregularly arranged. The group is not seen on tho photo- graphs taken on March 14, 15, and 16. Means ... 10 235-68 - 5-38 ... Group 1620. A small spot on March 6. Three small spots on March 7 and 8 ; two of these have disappeared by March 9. Mar. 1 1-493 12-412 13-488 H"333 15-482 16-282 '7 '444 o o o o 22 29 16 O o 1 1 2 O O O o 25 24 10 o 6 83-8 84-1 83-4 84-4 16-0 -15-9 -'57 -17-2 -64-8 -52-4 -39-0 + '4'3 Mar. 6-192 7 '49 3 8-175 9-482 10-465 2 9 2 7 '4 4 2 26 22 H i 5 i 4 o 10 25 14 1 1 7 176-4 175-2 74'4 171-7 >7''3 -18-3 -19-1 19-0 -19-1 19-8 -42-1 26-2 i8x> - 3'5 + 9'i Means ... o 9 83-93 l6'20 Means ... 2 13 173-80 19-06 Group 1624. A regular spot, a, preceded by several smaller spots, a has broken up by March 17. The group is very unstable, the spots composing it changing from day to day. Group 1621. A very small spot on March 10. Three small spots on March u, two on March 12, one on March 13 and 14. Mar. 1 1 '493 12-412 13-488 H'333 15-482 16-282 '9 37 21 28 10 102 21O 254 205 139 88 o 24 31 15 16 6 251 268 216 142 79 48 73-2 71-6 71-4 71-6 72-8 71-7 + 97 + 9 -z + 9' 6 + 97 + 9'3 + 9'4 -75'4 -64-9 51-0 -39' 6 -23-2 -13-8 Mar. 10-465 n'493 12-412 o o 12 9' 28 6 54 '5 1 19-2 1197 12O'6 18-9 -18-3 19-0 -43'o 28-9 -15-9 TAKEN AT OltEENWICH, IN TSUIA, AND IN MAl'RITirS, IX THI YKAR8 1882 TO 1885. 263 AKKAS and HEi.iOfiRAnin I'nsrriONS of GROUPS of SUN SPOTS continued. Date. Groeuwii h Projected Area of Area for ;ip. KSJSJ Longitude, tif Croup. v. m Latitude of Group. I ..'ii^i tin It from Central Meridian. Date. Greenwich Civil Time. I'r . t. 1 Area of Area, for iip. v. H Longitude f Gmup. Mean latitude of Group. Longitu lr from Central Meridian. fmhra. Whole Umbra. \Vli..!i- Umbra. Whole Spot Umbra. Whole Spot Oroup 1624 continued. Group 1619. A small regular spot 1885., Mar 1-444 18-451 | '943' 18 101 3 9 5* 43 16 74'3 74'' 74'* -f 9' + 9'3 + 8-7 + 4'* + 17'* 4-30-2 885. a Mar. 24-427 25-430 26-473 7-483 *8'547 2 6 4 3 o 35 3 *9 12 7 I 3 l 1 20 '5 1 4 jii-4 311-$ 313-0 313-1 3I4-3 :?! - 6-0 - s-6 - 57 267 -12-4 + 1-8 + I5-3 + 3'S Means ... II l4 71-77 + 9'33 Group 1615. .ill spot, a, seen only on March 14. Another small spot, l>, is seen on Man-h 16, and another, c, on March 18 and 19. No spot belonging to thil group ii seen on March 17. M'-ans ... ... i 12 312-88 - 57 ... Group 1630. An irregular straggling group of small spot*. Mar. 14-333 15-482 16-282 '7-444 18-452 19-431 o o o '3 o ii 7 20 o o 2 O 16 o 6 o 9 10 44'3 44' i 47'4 48-4 11-2 -125 -12-3 -12-6 -66-9 -41-4 - 9'5 + 4'4 Mar. 25-430 26-473 27-483 28-547 4 7 18 4 34 '35 83 82 i 4 10 2 '9 70 4* 4' 296-3 196-8 297-1 296-2 12-0 -11-6 -12-5 -11-8 -28-6 -'4'4 - 7 + 12-4 Means ... ... 5 43 196-63 12-48 ... bDJ) ... o 7 46-05 12-40 Group 1631. A large regular spot. It has broken up in two portions by April 4. Group 1626. all stK>t The spot seen on March 16 is probably not the same as that seen on March 15. Mar. 25-430 26-473 27-483 18-547 29-242 30-446 3' '437 Apr. 1-429 2-434 3'4 "3 4-423 S'5'4 6-166 o 16 32 t 5 46 65 7 17 '3 o 8 35 'I 4 269 366 380 38i 39* 360 in 2*4 148 69 101 o 16 3* 3* 4' 28 *4 34 4 10 9 o IO 169 246 265 271 243 2IO 205 186 "4 '3* 103 63 '24 238-8 238-2 *37'9 137-1 237-0 236-9 2367 236-6 136-4 136*0 135-8 235-8 236-8 20-2 2O'I 20-1 19-8 -I 9 -8 -19-9 10-0 lO'I 10-0 10-1 20-2 -I 9 -2 -I9-5 -86-1 -73-0 60-0 -46-7 -37-6 -217 - 8-9 + 4-' + I7-* + *97 -f-42-8 + 57-2 + 66-8 Mar. l 5-482 16-282 o 3 10 9 2 5 1 1 108-2 109-4 -17-2 -'5'4 + 12-2 + 23'9 M-'ans . . I 8 108-80 16-30 Group 1627. Two small spots. Means ... ... 9 '79 236-91 -19-93 M:r. 19-431 20-579 20 56 O 10 28 18-0 18-0 -i;'3 -'5'5 i 6-0 0-9 Group 1632. A scattered group composed of a number of small spots. The preceding spots of the group hare united to form one regular spot, a, and the following spots to form another, 6, by April z. A third regular spot, r, has also formed Iwtween these two by April 4, but it is measured with some smaller spots on April ;. '., which has greatly diminished in size, is measured with some small spots on April 6. Means ... ... '9 28-00 -15-40 ... Group 1628. A small spot. Mar. 26-473 27-483 28-547 29-242 30-446 3' - 437 o 56 55 27 93 7* 211 364 482 367 6l 7 5 47 39 '5 49 ,46 244 301 337 204 3*3 234-1 2317 230-6 2297 234-1 2367 16-5 -16-1 -15-9 16-1 ~T 16-0 -65-2 MS"" -44'9 -24-5 - 8-9 | Mar. 19-431 o 16 22 336-5 + 4'3 -67-5 1 Means 1 ... ... 21 336-5 + 4'3 ... 264 AREAS AND HELIOGRAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS AREAS and HELIOGRAPHIC POSITIONS of GROUPS of SUN SPOTS continued. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Liongitude of Group. Mean Latitude of Group. l,ongitudi from Central Meridian. Jmbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Group 1632 continued. Group 1637. A few small scattered spota, which change from day to day. The group is not seen I on April 5. 1885., Apr. 1-429 2'434 3'4'3 4-423 5'5H 6-166 104 I! 53 44 89 553 747 525 528 484 249 11 37 4 1 48 '59 283 4 5 322 404 525 422 238-1 239-1 241-1 242-1 242-0 243-9 -16-1 -15-6 16-0 -16-1 -15-9 -16-7 o + 5-6 + 19-9 + 34'8 + 49' 1 + 63-4 + 73^ 1885.,, Apr. 2-434 3-413 4-423 S-SH 6-166 O O 4 26 18 6 '4 o 4 13 9 3 '3 221-5 224-3 221-5 226-I - 6-4 + 2-3 - 6-3 418-0 - 6-6 428-5 -"6-3 | +56-1 1 Means ... 43 326 237-02 16-07 ... Means ... ... i 8 223-35 6-40 Group 1633. Two small spots. Group 1638. A large group of very irregular form, which undergoes constant changes. It has 1 become a long straight stream by April 9, and has divided into two groups by 1 April 12, the first spot in each group being large and regular. Mar. 28-547 3 23 2 '4 247-4 -16-5 -36-4 Means ... ... 2 14 247-4 -16-5 ... Group 1634. A small spot. Apr. 4-423 5-5I4 6-166 7-428 8-157 9-183 10-133 11-492 12-164 13-251 14-483 15-476 18 63 ill 156 177 237 303 206 113 72 20 6 274 54i 916 1316 1841 2117 2063 1491 1293 806 338 79 32 61 90 95 99 126 160 119 72 57 27 '3 483 534 749 827 1055 1 126 1089 860 810 643 437 '54 121-3 I2I"3 1207 121-3 120-8 I2I-I 122-4 122-4 I23-0 124-4 I25-I I20'6 411-4 411-4 411-7 4ii'9 412-1 412-4 4i2-3 413-0 412-5 412-6 412-8 413-6 -71-7 -57-3 -49' 3 Mar. 2 8' 547 29-242 6 o 25 12 4 i7 7 241-3 242-1 14-0 -14-5 -42-5 -32-5 3* * 23-0 - 9'I + 4'8 + 227 + 32-1 + 47'9 + 64-9 + 73-5 Means ... ... 2 12 241-70 -14-25 ... Group 1635. A small spot. Means 79 73i 122-03 412-31 Mar. 28-547 3 O 4 z'4'3 + 9'3 -69-5 Group 1639. A large group of very irregular form, which undergoes constant changes. The pre- ceding spots have coalesced by April n to form a large spot, a, which has divided into two spots, b and c, by April 15. Means O 4 214-3 + 9'3 Group 1636. A regular group. Apr. 7-428 8-157 9-183 10-133 11-492 12-164 13-251 14-483 15-476 16-237 I/-437 18-406 o Q 25 117 IOO 113 132 75 64 59 '9 5 39 136 439 932 989 1097 1322 732 533 433 218 73 o 9 '9 72 53 59 67 42 43 47 24 H 7' '53 338 583 530 567 682 4'5 352 343 270 185 80-3 81-4 82-9 82-8 83-2 84-0 83-5 85-4 86-2 86-2 85-9 86-3 4 8-9 4 8-0 4 7'8 + 7'4 + 7'4 4 7-1 + 7'9 4 7'2 + 7'i + 7-' + 7-4 + 7-' -73-1 62-4 -47-3 -34-8 -16-5 - 6-9 + 7- + 25-2 + 39"' + 49' 2 + 647 + 77-9 Apr. 1-429 2-434 3-4I3 4 - 423 5-5I4 6-166 7-428 8-157 9-183 10-133 11-492 6 10 IO 28 22 52 3 24 9 7 o 5' 85 119 '35 1 68 165 122 128 57 21 5 10 10 7 '7 12 27 '5 '3 5 5 86 85 87 82 90 86 62 67 33 '4 5 158-8 1587 158-9 158-6 158-5 158-4 158-8 158-7 158-3 158-3 157-9 -13-4 -13-4 -13-3 -ij'5 -13-8 -14-1 -13-8 -14-1 -13-9 -13-8 -13-1 -737 60-5 -47-4 -34'4 2O'I -u-6 + 5'4 + H'9 + 28-1 +47 + 58-2 Means ... ... 1 1 63 158-54 -13-65 Means 37 374 84-01 4 7'53 TAKES AT (iKKENWlCil, IN Isi'IA, AND IN MAURITIUS, IN TIIK YKAR8 1882 TO 1885. 268 us ;mj. 16-04 Group 1646. A number of small spots suddenly appearing near the centre of the Sun. The last spot of the group has attained a considerable size by April 2], but has decreased again by April 24, and broken up into a number of small spots by April ij. Apr. 12-164 13-2;! 3 3 '3 2 O 24 '4'5 15 141-1 4-10-2 4-10-3 +49-6 4-64-6 MI-JIM* ... ... 1 20 140-80 4-10-25 ... Apr. 21-391 8 22*420 21 23>44 30 24-168 14 5' '74 213 "9 9' 4 10 16 8 8 27 88 109 64 60 3'37 3'5'3 314-0 313-8 3'S 5 M-8 -'5'3 o-o 4-12-2 4-21-5 + 39-5 Group 1643. A regular spot, a, followed by a number of small spots. These have all disappeared by April 24. -11-8 -n-6 -11-6 I2'O Apr. 16-237 '7'437 18-406 20-442 21-391 22-420 24-168 26 27-408 '3 21 3 40 49 53 33 33 '3 21 '3 4 9' 239 328 327 349 34' 308 294 220 '53 109 5' 25 21 22 27 16 18 8 '5 "4 7 '79 245 246 '94 187 '73 '57 '57 128 "3 116 89 321-4 320-5 3207 321-3 3217 322-0 322-8 322-8 323-4 323-8 323-0 - 4-5 - 4-5 - 4-6 - 4'7 - 4 - 47 - 4'5 - 4'4 - 4'3 -75-6 Means 9 70 J-4-46 -1I 7 6 ... -60-7 -47-7 -32-6 -19-8 + 7'5 4-21-0 4-31-1 4-62-1 +73'5 Group 1647. A large regular spot, a, occasionally accompanied by small apots. Apr. 21-391 22-420 24-168 26-485 ^08 28-405 29-293 30-424 May 1-421 2-435 o 16 21 33 47 55 55 44 28 20 '3 5 12 95 23 2 268 3'2 318 3'9 282 226 48 69 '9 26 20 25 29 3 29 23 s 11 10 5 o 63 183 188 181 163 ,69 164 164 '52 138 109 70 34 243-0 242-8 242-9 242^ 243-0 243 ' 243-0 243-0 243-2 242-6 -16-8 -16-3 -,6-3 -16-1 -,6-j -.6-3 ,6-3 -16-4 -.6-5 -16-4 -16-5 16-0 16-4 -86-0 -72-0 -59-0 -49-4 - ' 9 165 322-25 - 4-54 - -187 4- 6-7 4-18-5 + 47-0 4-60-2 + 747 < .ruiip 1644. A cluster of very small spots, which are measured together. Apr. 19-512 o 6 335-7 + 7-8 -18-2 Mn. ... ... 6 3357 + 7-8 .118 ... 17 '37 243-02 -16-35 PHOTO-UEI.IOURAPBIC RESULTS, 1882-1885. 2 L 2f>6 AREAS AND HELIOGRAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Lougitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Group 1648. A very small spot. Group 1652. Three very small spots measured together on April 27. The group has greatly increased in size by April 28, and forms a short stream of spots, the last of which, a, is the largest. Only a and one very small spot remain by April 29. l88S.d Apr. 25-395 O 10 o 6 242-9 o -21-7 -33'i 1885. Apr. 27-408 28-405 29-293 30-424 4 13 23 15 1 06 9' 8 2 9 17 O 8 67 68 9 o 274-1 272-8 272-4 272-6 - 5-5 - 5' o +24-6 + 36-5 +47-9 +63-0 Means O 6 242-9 -21-7 Group 1649. A very small spot on April 26. A compact cluster of very small faint spots on April *7- - 4-8 Means ... .... 7 38 272-98 5-08 Group 1653. A large regular spot, a, accompanied by a number of smaller spots. The latter undergo frequent changes in number, area, and arrangement. Apr. 26-485 27-408 O 12 6 6 3 251-7 252-3 -167 -16-8 10-0 + 2-8 Means ... ... 5 252-00 -1675 Apr. 27-408 28-405 29-293 30-424 May 1-421 2-435 3-585 4-490 5-279 6-488 7-544 8-390 9-409 16 58 107 114 128 121 87 93 121 77 68 40 4 130 334 560 723 759 817 717 650 582 SH 563 407 '35 38 73 92 74 7' 62 44 49 67 4* 61 53 1 1 300 420 495 473 424 420 361 34 1 323 347 55 546 382 171-5 169-4 168-8 169-4 170-2 171-1 171-2 171-6 171-5 171-6 '7''3 172-4 171-0 I O'O - 9'9 - 9'5 - 97 io- 1 IO"2 -I0'7 -10-8 I I'2 -10-3 - 9-8 - 9'4 i o-o 78-0 66-9 Group 1650. A compact cluster of small spots on April 26. The group forms a long stream of spots on April 27 and 28 ; the central spots then disappear, and the group forms two compact clusters on April 29, of which the preceding one rapidly diminishes in size on the succeeding days. -557 40-2 26-2 -11-9 + 3'3 + 157 + 26-1 + 42-' + 55-9 + 68-1 + 80-2 Apr. 26-485 27-408 28-405 29-293 30-424 May i '42 1 Z'435 II 24 57 22 O I I O 96 142 235 238 2OO 170 34 6 12 31 '3 9 o 52 76 128 138 '35 '39 38 248-1 248-1 247-5 249-0 248-0 H57 244-1 + H7 + '4'5 + '4'9 + I4-S + '47 + 15-1 + 157 -13-6 - 1-4 + I I '2 + 2 4-5 + 38-4 + 49"3 + 61-1 Means ... ... 57 411 170-85 1 IO'I2 ... Group 1654. A very small faint spot. Means ... ... IO IOI 247-21 + 14-87 Group 1651. Two very small faint spots measured together on April 27, but separately on April 29. The group haa increased in size by April 30, when it forms a compact cluster composed of four spots. The first and second are measured separately ; the last two are taken together. Apr. 28-405 o 4 o 2 H5-3 I2'O + 9' Means o 2 H5'3 I2'O ... Group 1655. A very small spot. Apr. 27-408 28-405 29-293 30-424 2 22 9 28 IOI o I o 12 6 24 '43 278-8 280-2 279-8 279-4 10-0 -10-5 10-4 -10-3 + 29-3 + 43'9 + 55-3 + 69-8 Apr. 28-405 2 4 2 231-9 -I2'5 - 4'4 Means ... o 46 \ 279-55 10-30 Means ... I 2 231-9 -12-5 ... TAKKN Al CUKKSWli'll, IN I\I'1A, AND IN MAl'RITll'S, IN THK YKAK.s 1882 TO 1886. .is and lli'lii^i-iipliic Positions df Groups of Sun Spots continued. OrWB I'linr. Projected Arm of At. . up. Km Longitudr revp, Mian Latitude oup. Longitude- flolll Centr.il Date. Qmnrkh Ciil Time. I'l ',' *' 1 Ana of Area for Group. M. i Longitude of Oroup. M H Latitude Longitude ' ' Central Meridian. Wlu.lc S|*t. Umbra. \V|,,,1,. Umbra. Whole Spot Umbra. Whole Spot Qnap A tingle spot. It IIM greatly 1656. decreased in size by April 19. limup 1661. A largo irregular spot, a. The outer part of tlie spot has broken up into a numW of small spots by May 6, but a large spot still remains in the centn 1' decreases in aizt ou the succeeding days. *s. t Apr. 18-405 29-293 O 16 O O 5' >, 154-6 ISS-O -.5-8 -'59 O -81-7 -69-5 1885. May 1-4*1 *'435 3-585 4-490 r79 6-488 7*544 8-390 9-409 10-508 11-432 12-419 12 *3 45 62 97 117 *4 35 22 6 5 2 '99 448 618 700 672 737 446 3' z 258 48 4' *5 7 36 4' ! 8 63 13 '9 '3 5 5 3 456 533 489 462 400 39 s 236 17* 156 35 39 36 o 120-4 119-5 119-5 119-2 119-1 119-4 119-1 1.9-3 119-8 1 19-6 1 19-2 118-8 . + '39 + I3-6 + '3'9 + '37 + '37 4-14-6 + '4'3 + '4'9 + '5'4 + '5'6 + 15-8 + '5-5 ?6 - o Me.ui- ... o 30 154-80 -1585 -63-5 -48-4 Group 1657. A very small spot -36-7 -26-3 10-1 + 37 + 15-0 + 29-0 + 43'3 + 55' + 67-8 M iv 1-421 4 o 3 154-9 -13-8 -41-5 McMll o 3 '54'9 -'3-8 Two regular s|> undergo c< the effect < Apr. 30-424 Mav 1-421 z'435 3-585 4-490 5'*79 6-488 7-544 8-390 9-409 10-50^ 11-432 : -. us ntinual < On A pi >f foreslic O '7 4' 3* 5' 83 65 49 47 26 9 6 Group 1658. 1 6, accompanied l>y a number of smaller spots. The latter shanges in number, area, and arrangement. 6 alone remains il 30, b is confused with the smaller spots near it, through rteuing. Means ... 26 284 119-41 +14-58 Group 1661. A regular spot, a. It increases in size from day to day until May 7 and 8. On May 6 the penumbra of the spot becomes extended towards the south, the extension being measured as a separate spot. On May 7 and the succeeding days, spots are seen s.p. of a, ana the group become* a short stream of spots closely following each other. ,46 239 28l 3" 364 382 500 39 S 316 *44 130 60 o 20 33 20 29 44 34 *7 29 9 9 10 ~~n~ 369 282 229 '95 207 204 261 216 191 77 136 96 132-0 132-9 132-5 '33'3 133-2 132-9 132-9 '33'3 '337 '34'5 134-8 ,34-8 + 11-4 + 1-2 + 11-2 -r-II'4 + 11-2 + i,-5 + 11-6 + 11-0 + 12-2 + ia'S + 12-4 + iz-4 -77-6 -63-5 50-5 -34-6 -227 -12-5 + 3'4 H-17'9 + 29-4 + 43'7 + 58-5 + 77 May 3-585 4-490 5-279 6-488 7-544 8-390 9-409 10-508 11-432 12-419 "3 14-384 o 29 9 76 '9 '47 22 271 22 294 56 431 43 3'8 T 34" 21 243 21 186 No pho tograph. IS n 18 '4 12 *9 22 9 12 '4 (7 o 66 V3 136 177 65 4 161 178 39 124 74 *4 90-8 90-9 90-4 90-5 90-8 91-3 91-1 91-7 9''5 92-0 91-9 91-7 + 47 + 4'3 + 47 + 3'9 + 4' + 4'' + 4'3 + 3T + 4'4 + 4-' + 4'5 + 5-o -77-1 -65-0 -55-0 -39-0 -24-6 13-0 + 0-3 + '5'4 + *7'4 +41-0 ;-9) +66-8 Means ... 214 133-40 + "75 i irmip 1659. Two small spots. Only one is seen on May 3. Mean* 12 130 91-22 -I- 4'33 (iroup 1663. A regular spot, a, closely follow.-.! fr.ni. May 7 to May 12, and on May 16 by a stream of small spots. M.IV 1-421 z'435 3-585 9 4 *4 4 + 6 6 4 o '4 36 8 234-1 235-8 236-9 - 5'9 - 5'4 - 5'4 + 377 + 52-8 + 69-0 Means 3 '9 235-60 - May 4'49 5'79 6-488 7-544 8-390 9-409 10-508 11-432 12-419 '3 O 5 1 1 21 48 3 :; 9 No pho 1 1 126 '95 H7 248 *43 210 tograph. - IO 4 3 18 9 - 1 1 (il 33 130 "3 136 '-4 35 129 no "3 105 77"' 7 r 6 76-1 75-' 74-4 -56 75-4 75-* 75-0 + '4'9 + ' + 14-6 + '4'3 + 14-* + '4*3 + '4'3 + 47 + 14-6 + 14-6 ^8 -69-8 -5; ; -40-3 -29-9 - 0-7 + II'J -r-24-2 + 37'0) iroup 1660. Two small spots. May 1-4:1 2 M i 16 *34'3 -17-8 + 37'9 Means i 16 *34'3 -17-8 ... 268 AREAS AND HELIOGKAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Date. Greenwich Civil Time. Projected Area of Area for Group. .M ean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Group 1663 continued. Group 1668. A very small faint spot. 1885. May 14-384 I5'43> 16-381 12 4 o 106 58 4 Z 10 5 o 86 69 87 747 747 73-6 o + 14-6 + H7 + 15-0 o +49-8 +63-5 +74-9 1885. d May 9-409 IO o 5 o 91-4 o -24-7 o + 0-6 Means o 5 91-4 -247 Means 10 112 7S*'7 + 14-61 ... Group 1669. Two small spots, a and b. They move somewhat away from each other, a has broken up into a number of very small spots by May 1 8, but is still measured as one. Group 1664. Two regular spots, a and 6, on May 6. Other spots appear on the succeeding days, and 6 diminishes in size, so that by May 9 the group has become a long stream of small spots closely following each other, with a as their leader. The small spots rapidly disappear after May 9, and by May 14 a remains alone. May 16-381 I7H93 18-389 7 o o 33 66 50 5 o 23 38 26 314-9 315-1 316-0 - 8-4 - 8-1 - 7'4 -43-8 -28-8 -16-1 May 6-488 7-544 8-390 9-409 10-508 11-432 12-419 13 14-384 i5'43i 16-381 I 27 48 41 10 23 21 No pho '7 12 8 113 198 282 3'3 230 283 194 tograph. 99 81 37 2 25 34 24 6 1 1 ii (" 10 10 10 189 I8 7 206 I8 7 121 142 99 ii 63 65 43 56-8 57'5 58-3 59-1 60-3 60-8 60-2 61-3 62-3 62-6 63-0 - 9 -0 - 9' 1 - 9-1 - 87 8'2 -72-7 -57-9 46-0 -3'7 i6'o Means ... 2 29 315-33 - 7'97 - 7-8 - 77 - 7"4 - 7-0 - 7'4 - 7'4 - 3'3 + 9'z + 23-3) + 37'4 + 5'-4 + 64-3 Group 1670. A small regular spot, , followed by several very small spot-. The group increases in sixe, ami a has become a spot of very considerable size by May 20, apparently by coalescing with several of the neighbouring spots The following spots soon disappear, and by May 24 a remains alone. Means 14 126 60-20 8-07 May 16-381 I/-493 18-389 19-415 20-474 21-556 22-477 23-418 24-375 25 26-273 8 12 38 16 69 5 69 54 20 No pho 7 60 142 295 278 555 510 429 383 226 tograph. 6 9 9 9 26 9 36 26 39 35 "7 (18 '9 77 i<3 191 '54 290 268 245 251 186 187 188 294-0 +13-2 295-0 +13-5 295-6 +13-8 297-9 +13-8 300-8 -(-13-8 301-4 4-13-3 302-8 -h 13-0 303-4 4-12-6 304-2 +12-3 305-4 +12-2 306-6 1 2'O -64-7 4.8 Q Group 1665. A short stream of very small spots. It is measured in two parts on each day. -36-5 -20-5 - 3'7 -\- I 1-2 + 24-8 + 37'8 + 5I-3 + 65-1) + 78-9 May 7-544 8-390 9-409 4 10 2 36 it 3 9 2 25 47 73 59'S 158-6 158-1 -12-3 -12-4 -12-3 + 4+i + 54'3 + 67-3 Means 5 48 158-73 -12-33 Means ... 22 195 300-65 +13-05 ... Group 1666. A short stream of spots, which appears suddenly near the centre of the disk. Group 1671. A large regular spot, a. One or two very small spots are sec n near it May 22-28. May 8-390 9-409 10-508 2 9 21 3 "9 182 85 15 13 2 64 I 12 64 122'6 124-5 124-6 - 3'4 - 3'4 - 3'5 + 18-3 + 337 + 48-3 May 18-389 19-415 20-474 21-556 22-477 23-418 24-375 25 26-273 27-445 28-490 29-403 30-411 8 22 38 44 4 48 47 No pho 46 29 3 6 o 73 164 309 320 33 271 3'9 tugriiph. 305 196 118 64 35 l6 24 2 9 27 23 25 24 (2 l 26 20 12 9 144 '79 240 197 186 140 .63 169 '75 ,36 109 90 1 08 256-5 255-9 255-5 255-5 255-0 255-1 255-1 255-0 254-8 255-0 255-0 2547 Z53-4 -iz-6 -13-0 -12-3 I V* -75-6 -62-5 -49-0 34."7 Means IO 80 123-90 - 3'43 -12-6 -12-8 -23-0 -10- 5 + 2-2 + 147) + 27-I 4-42-8 + 5 6-6 + 68-3 + 80-4 Group 1667. A small faint spot. -12-5 -12-5 -12-4 12'2 I2-I I 2'0 12-1 May 8-390 o 33 o 18 1 10-3 + 16-3 + 6-0 Means ... 18 1 10-3 + 16-3 ... Means ... ... 20- '57 255-I2 -12-49 TAKKN AT GREENWICH, IS I.NDIA, ANH IN MAURITIUS, IN THE YEARS 1882 TO 1885. 269 Qfwmwioh I'm! Time. A very Urge |88 5 .,, M;i\ i>'389 19 20-4-4 21-556 22- IJ-4I8 H'375 26-173 *45 28-490 29403 411 Areas ami Heliogruphic Positions of Oroupa of Sun Spots continued. oted Area of A fa for Group. Mean Lodfcitu.).- of Group MM Latitude ..I liroup. 1/ongituJe fi.Hu Central Meridian. n.,... Greenwich 1'ivil Time. Projected Am of Arra for up. M. -.:, Lougitude of Giciup. Mean node of Group 1: . Central Mridin. Umbra, regular s Whi.l.- >ot, a, w Umbra, Whole pri Umbra. Whole Spot. Umbra. W I...1,. S|,t. Group 1672. th from time to time serrnl small s|*>ts nemr it. Oroup 1675 roniwued. 1885... May 15 26-273 >7'445 28-490 No pho 10 4 o t..;.-:ipli "9 69 IO ( 10 3 o 76 81 48 IO o 260-9 261-9 156-1 154-1 -157 -157 -15-3 -'5'3 + 10-6) + 34'* + 44-0 + 557 33 I 9 163 204 221 |8 5 1-1 No pho .68 76 5* '7 4 I 3 8 4>4 609 805 I0 5 3 1042 1 191 .'L'I I' 1 ':. 1028 883 S3 1 35 1 06 82 58 '33 "9 126 97 88 (93 98 53 48 4 '3 339 479 498 5'* 599 614 606 598 613 494 488 336 l$4-6 254-6 *S4'5 '54-5 *54'3 4'4 154-2 254-2 254-1 *537 254-0 154-2 *53'4 + 13-6 -t-ij-8 + 14'* + 13-8 -(-14-2 + '3'9 + '3'8 + 14-0 + 14'' + 14-' + 14-1 + 14-0 + 13-6 o -77'5 -63-8 50-0 357 -13-7 Means 5 4* 257-48 -15-84 + '"3 + '3'9) + 26-4 + 4I-S + 55'6 + 67-8 + 80-4 Group 1676. A small spot. May 20-474 21-556 o 2 2 O 33 *3 *4 9 o i o 3i 16 5 5 246-6 246-5 146-4 147-0 - 9'3 IO'2 ~ 9 '^ 9-6 -57'9 43'7 in ... 80 516 254-21 + "3'94 22-477 23-418 -31-6 -18-6 1 1 M*v 1.^-389 19'4'S 20 21-556 22 23418 '4-375 26-273 27-445 o - 6 it 18 6 7 8 33 5 7* 62 84 93 53 tograph. 21 1 Qroop \ Hfnl IO 5 7 10 3 (4 4 1673. i: -p..| 80 58 58 38 46 z '9 12 5 Moans ... I >7 246-63 - 9' 6 3 ... Group 1677. A large spot, a, of irregular outline. It npiilly diminishes in site, throwing olT Koine small spots on May 11 and the xucceeding day*. It hat entirely broken up l.y May 27, but the group is meuured together on that day. It has begun to increase in size again by May 29. 254-0 253-6 537 *54'4 *54'5 255-2 255-1 255-2 255-2 255'3 - 8-4 _ 7-9 - 6-9 - 7'5 -6-9 - 6-7 - 67 "I 4 6-0 - 5-8 -78-1 -64-8 50-8 -35-8 -Z3'5 -10-4 + 2-2 + '4'9) + *7'S + 43'' May 20-474 21-556 22-477 13-418 7> 33 37 9 *3 No pho 10 26 4 6 3 3S 458 556 399 405 1... r.|.!i. H4 270 9 '44 75 59 101 *9 *5 1 1 12 (9 5 4 2 3 7 4 S 396 381 *33 2 '4 170 126 52 S9 "4 82 97 135-8 236-1 136-2 236-5 136-3 236 I *35'9 236-5 237-0 236 2 235-I *34'9 + 8-9 + 8-6 + 9'3 + 9'' + 9'' + 9' 8 + 10-4 + 10-3 + 10-3 + 9'9 + 10-1 -i-io-o -68-7 -S4' -41-8 -29 i -166 - 4-2) + 8-2 + H-3 + 38-6 + 49-8 + 62-1 + 72-0 Mi-;ins ... 5 39 254-62 6-92 M--375 25 26-273 *7'445 28-490 19-403 30-411 3'-'77 Group 1674. ill spoti, a, b, ami e. on May 20 ; only o re mains by May 11. M.iy ::-4'4 21-556 4 45 16 2 O *S 8 285-0 1867 + 16-2 + 16-6 '9 5 - 3'5 Means ... 18 205 236-05 + 9-67 ... HIS 1 "7 285-85 + 1640 Group 1678. A regular spot, a. A few very small apota are seen near it on May 14, *;. jo, ami ji. Group 1675. 4!! KIWI, a, on May 10. < " iieir it mi tin- succ-eding days, anil I .-comes a long -trailing -tip.-tin of small .i|K>t*. whi.h . hmigr M iv i-,. Tin ^r.iiip (> + 6-9 27C AREAS AND HELTOGRAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Date. Greenwich Civil Time. Projected Aiva of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Group 1678 continued. Group 1683. Two very small spots, a and b, on May 24. A third 26. b and e have disappeared by May 27, and spot, c, is seen near them on May a fourth spot, d, is seen near a. 1885. May 31-177 June 1-388 29 '59 60 35 o 190 1 9 I o 227-3 227-4 o -16-8 -16-2 + 6 4'4 + 80-6 1885. d May 24-375 25 26-273 27-H5 3 No pho 6 4 2O tograpli. 69 48 2 (4 5 4 IO 29 47 48 o 268-7 269-7 2707 272-1 - 3'2 - 3' - 27 + 15-8 + 2 9'4) + 43-0 -t-59'9 Means ... 28 I 9 I 226-88 17-08 Group 1679. A small spot. 2-0 Means 4 34 270-30 - 273 Group 1684. A small spot. May 21-556 22-477 o o ii 9 o 12 17 353-9 353-3 - 3-o - 3-8 + 63-7 + 75-3 Means o '5 353-60 - 3'4 May 27-445 28-490 29-403 o 3 8 1 1 10 o 2 15 12 8 137-0 136-8 '37'i + 1I'3 4-H-7 _!1L +11-50 -75-2 Group 1680. Two small spots. -61-6 -49'3 Means I 12 136-97 May 21-556 o 4> 21 304-0 - 6-5 + 13-8 l68 5 . ;race of the group can be seen on May 3 1 . Means ... ... o 21 304-0 - 6-5 Group Two small spots on May 29 and 30. No but one small spot is seen on June i. Group 1 68 1. A small spot on May 23. On May 24 and succeeding days a regular spot, a, followed by a cluster of small spots. May 29-403 30-411 3'"'77 June 1-388 o o 21 12 18 o o 23 10 o 10 126-0 123-4 126-6 -23-0 22-9 24-0 60-4 -49-6 2O'2 May 23-418 24-375 25 26-273 27-445 28-490 1 1 No pho 10 14 o 40 94 tograpli. I 7 I i'5 7 6 (9 12 16 o 20 S 2 94 136 140 15 277-8 278-5 278-3 278-1 277-7 274-5 IO'2 - 9-6 + 12-2 + 25-6 -I-38-0) + 50-4 + 65-5 + 7 6-I lO'O -10-3 -9-8 10-6 Means o 1 1 125-33 -23-30 1 Group 1686. Means 7 76 277-48 10-08 Group 1682. A regular spot, a. It diminishes in size from May 23 to May 29. A very small spot is seen near it on June i . Two small spots, a and b, on May 30. These have moved apart by May 31. 1> has greatly increased in size by June i, and several very small spots have appeared between a and b. Only a and 6 remain by June 6, and only a by June 7. May 30-411 31-177 June 1-388 2-423 3-380 4-400 5-384 6-245 7-416 8-284 o 8 26 10 16 23 15 19 o o 39 72 190 i 23 206 no 94 73 15 9 o 5 '5 5 8 '3 9 '3 o 3' 47 109 I2O 108 59 11 16 16 124-0 124-9 123-5 123-2 1227 123-0 124-2 126 6 128-5 129-3 -,14-2 + V9 + 14-2 + 14-5 + 14-1 + 14-2 + '4'5 + '4'5 + '4'4 + 14-4 -49-0 May 23-418 24-375 25 26-273 2y445 28-490 29-403 30-411 3 I ' I 77 June 1-388 6 6 No phc 17 6 7 4 4 5 o 3 59 tograph 80 S 2 47 27 25 23 22 16 8 (10 12 4 4 2 2 3 o 88 77 66 55 30 24 '4 13 12 '4 185-6 185-5 185-3 185-0 185-2 185-0 185-2 184-9 185-0 184-9 - 8-8 - 8-4 - 8-2 - 7'9 - 7'9 - 7'3 - 7'i - 6-9 - 7'i - 6-7 80'0 -67-4 -55-0 -427 27-0 -13-4 I'2 + II'9 + 22-1 + 38-I 38-0 -23-3 - 9'9 + 2-1 + 16-0 + 30-3 + 44'' + 61-5 + 737 7 62 124-99 + '4"39 Means 6 39 185-16 - 7-63 Means TAKEN AT (JUKKXWlrH. IS IM'IA. AM' IS M \rUITIUS, IN TUB YKAIW 1882 TO 1885. J71 Aiv;is iimi llL-li"'j! Mi>l:i<- I'-isitions of Groups of Sun Spots continued. iwich Proj Ana of Area for up. lx>nf;r >if linuip. M. latitude iftinnip. Longitude from Central Meridian. Date. Qratinwirh Civil Time. Projected Area of Area for Oroii|i. V | :..:. .:. of Group. Mean latitude of droop. Ungitiub Central Meridian. Umbra. Whole Umbra. Whole Spot. Umbra. S|,t. i ! .. \\ : Spot. . ^0-41 1 :i-i" .lun> 1-388 3-380 4-400 7-416 8-284 9-162 ip 1687. Croup 1690 i-untinueiL ' iv ;o. The .UP'"!' im-reaies in size, and consist* mainly nf '. b uifi e is a group of small spots, which I inn- 7 only a and A remain. 1885. June 4*400 5-384 6-245 7-416 8-284 9*162 10-397 1 1 -406 12-449 13-404 182 '43 3*4 208 290 "3 99 96 120 '5 1291 1522 1928 161 5 1661 1378 1 105 97* 763 420 '37 85 i?6 106 149 120 64 73 130 3' 967 926 1052 832 8 5 1 74 692 748 8*7 787 o 60-5 61-2 60-9 61-6 60-9 62-2 62-9 62-5 62-2 61-8 -113 10-8 -10-8 -10-6 10-6 10-6 -10-4 lO'I - 9'7 - 9-8 -465 -3*7 -21 6 - 5-4 + 5-3 + 18-2 + 35-* + 48-J + 61-8 + 74' : 4 35 79 7 82 34 3* >5 3 o 43 291 510 49' 614 55' 3-4 281 79 73 *7 2 30 21 43 40 43 9 20 '3 4 4 218 310 264 318 286 210 I 7 8 6 9 89 60 e 116-4 115-8 I14-9 ,,46 1 16-1 1 16-8 1 1 6-8 118-6 120 3 120-4 120-1 I l'9 -ll- 9 -ii-6 -11-7 -12-3 -12-6 12-8 O -56-6 -47'' -31-9 -185 - 4'5 + 9'8 -II -138 + 36-' + 53-3 Means ... 9* 814 61-90 -10-55 ... ->37 - 14-0 + 64-8 + 76-1 Group 1691. Three imall spots seen only on this day. uu 21 |86 II7-35 1 2 '64 ... Group 1688. A group <>f four spot*. The group has entirely changed ita appearance b) wlien it consists of a nearly straight stream of rery small spots. It is in t' on June a and 3, and in fire on June 4. It has agaii larance by the latter date, the stream being now nearly circuit two spots are seen on June 5. June 3*380 o *3 o '4 94-7 -12 5 -*59 June a, measured i changed ir. Only Means ... ... o '4 947 -12-5 ... Group 1692. A faint spot .Juin- 1-388 2-423 3-380 4-400 5-384 28 *4 i o 140 I 10 107 83 36 '5 '3 4 i 73 57 58 26 136-6 136-6 '37'4 138-7 138-0 -12-8 -12-8 -129 -12-5 -12-6 IO'2 + 3'5 + 16-8 + 3'7 + 44'' June 4-400 5-384 6-245 o '7 '9 10 o o o 5 *5 '5 15-8 *57 *5'3 2-0 - '7 - ''9 -8r -68-1 -57-2 Means 7 53 137-46 -12-72 Means ... ... o 33 25-60 - 1-87 ... Group 1689. Two spot*. On June a the following spot has broken up spots. One of these is measured by itself. into four very small Group 1693. Two spots, which separate and diminish in size. June 1-388 2-423 3-38o 4-400 3 i o o *9 35 28 10 2 1 O O ll '9 '5 5 112-9 113-4 114-3 115-9 + 7'4 + 7-9 -1- 7'4 + 7'5 -33-9 -up - 6-3 + 8-9 June 7-416 8-284 9-162 10 '4 o 162 108 '7 6 9 94 7' '4 94-0 937 95-4 s i -136 -3'4 + 27-0 + 38-1 + 5''4 Mean.- ... ... 5 60 9+"37 -13-50 Means 1 '4 114-13 + 7'5S up 1690. 1 A tine srnup, i-onsisting mainly of fonr spots. On June 6, e, is measured in two )o 331-90 -14-40 3 7 - 37 - 7" + 3-8 Group 1708. A very small spot Means . .. ... I 21 30047 - 3-63 Group 1705. June 19-484 20-414 11 9 11 6 290-3 290-8 -10-7 - 1C 4-23-0 435-9 Twu irr.-.iru.irly shaped kT'>u|w, which diminish in size after June 10. Small companions are measured separately on Jnue i-, 21, and n. Means ... i 9 290-55 -1075 June i 5-482 16-431 .-218 18-470 19-484 20-414 21-510 22-409 6 20 25 47 33 3' 56 26 74 '99 401 683 472 543 5 266 6 '5 .6 26 '7 17 33 '7 73 '47 254 248 288 295 170 262*9 162-8 -'9 262-9 263-3 263-6 264-1 161-9 -'4'3 -13-9 -14-5 -15-0 -15-2 -15-1 -57'4 -45-0 -34H -17-9 - 4' + 8-7 4-23-6 4-34-3 Group 1709. Two very small faint spots. June 23-416 24-401 5 o 24 5 i '3 7 101-2 201-6 - 9'5 lO'l -14 i 0-6 '4 9 -14-9 Means i to 201*40 - 9-80 PHOTO- HELIOGRAPH ic KUCLTB, 1682-1886. 274 AREAS AND HKLIOGRAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Group 1710. Two spots, which appear to separate. The following spot diminishes, and has disappeared by June 27, on which day the preceding spot has developed into a large group, which, after some changes, remains as two principal spots, a and 6. a has a small companion on June 30 and July i, and by July 2 has divided into two spots, b is measured as two spots on July i. Group 1714. Seven large spots, a, b, c, d, e,f, and g, on June 30, with some smaller spots follow- ing. 6 has disappeared by July 2, and a begins to break up on July 4. e is an irregular mass, which has broken up and partly disappeared by July 4, causing an apparent change of place on that day. On July 5 the group appears as a multitude of small spots, and after this the group consists of the spots d, f, and g, with several small spots at some distance. The small spot following d on July 6 is measured with it on July 7. 1885.,, June 23-416 24-401 25-251 26 2 7'445 28-412 29-581 30-409 July i -496 2-402 32 29 18 No pho 9 182 120 79 66 23 95 245 210 tograph. 134 '394 I 141 868 713 327 3' 21 I I (3 48 98 73 56 65 40 95 179 130 415 699 749 689 606 685 499 o 157-3 158-3 159-8 i6n 162-4 162-8 163-5 164-1 165-4 165-9 o -14-5 -14-5 -,4-6 -14-2 -13-8 -13-5 -12-8 I2'I -11-8 -11-9 58-0 -43-9 -3I-3 -5-4) + 0-5 + 13-8 + 29-8 + 4''4 + 57-0 + 69-6 1885. d June 28-412 29-581 30-409 July 1-496 2-402 3-463 4>59 5-326 6-460 7-482 8-427 9-488 i'439 1 1-406 o 39 1 60 ,64 181 193 238 117 48 5i 24 o 13 318 728 1252 1451 1540 1414 II 7 6 763 S3' 399 221 127 IOO O o 48 133 I 10 104 102 12 4 61 28 34 21 O O 60 763 928 1055 978 881 75' 610 408 35 266 189 162 259 o 65-4 56-5 56-8 56-3 56-4 57-0 56-0 55-9 55'i 53-5 55-2 54-4 55-0 54-8 o - 8-4 IO'I lO'O - 9'9 IO'I lO'I 10-8 -83-6 -77-2 -65-9 -52-1 -39-9 -25-3 -13-1 - I'7 + 12-4 + 24-3 +38-7 + 51-8 +65-1 + 777 Maans ... 47 475 162-06 -13-37 ... I I'O -11-3 Group 1711. Three spots on June 24. Only one is seen after June 25. 12-0 I2-I -I2'4 I2'I June 23-416 24-401 25-251 26 27-445 28-412 29-581 30-409 July i -496 2-402 i7 26 26 No pho o 1 1 o I o o 113 236 250 tograph. 6 7 53 33 38 8 7 29 26 20 (12 6 i o o 192 251 198 118 37 28 18 22 6 "43 "9 142-7 143-6 144-4 145-2 '45'3 145-2 144-8 I44'5 144-6 -i 6-4 -167 -71-4 -59'5 Means 55 544 56-31 10-76 -16-5 -16-3 16-0 -15-9 -157 -157 -15-5 -I5-5 -47'5 -32-1) -i 6-7 - 37 + 11-5 + 22-1 + 36-1 + 48-3 Group 1715. A small spot, a, is seen on July i. Several very small spots appear preceding a on July 2 ; and a spot, b, somewhat larger than a, appears on July 3. On July 5 the group is much broken up. By July 6, a and b have much increased in size, and appear as broken spots, with a small spot following. By July 8, a and b have coalesced, and are measured together, and by July 9 the group following is included. Means IO 88 144-42 16-02 July 1-496 8 18 16 57 154 I IO 218 146 54 2 5 21 38 I 5 8 208 284 1175 1777 1673 1442 1062 585 7 1 1 9 32 86 66 150 127 65 53 22 2 9 97 118 154 651 1069 1148 1249 1270 1246 50-3 5''5 54'5 54-0 53-5 54-8 53-6 54'4 53'i 52-1 51-2 19-6 -58-1 Group 1712. A small spot. 2-402 3'4 6 3 4-459 5-326 6-460 7-482 8-427 9-488 10-439 I9'6 -1 9 -I ig-O -i 8-6 -18-4 -i 8-8 -18-6 -18-8 -18-6 18-8 44 b -27-8 -15-1 - 4'i + I2-I + 24-4 + 37-9 + 5'5 + 62-2 + 74" 1 June 25-251 4 5 2 53-5 -20-6 + 62-4 Means o 5 253-5 20-6 Group 1713. A group of ten spots on June 28. They separate, and form a straight line of spots, the largest being in the middle. Means ... 55 641 53-00 18-90 ... Group 1716. A regular spot. June 28-412 29-581 30-409 July i "496 2-402 3-463 15 29 24 6 7 ,76 234 474 286 172 64 7 o 16 '5 4 7 89 121 26l '83 I 36 7i 143-9 146-1 146-3 145-8 146-5 145-3 - 6-2 - 57 - 5'9 - 6-0 - 5'9 - 5-8 ~ 5' + 12-4 +23-6 +37-4 +50-2 +63-0 July 4-459 5-326 6-460 7-482 8-427 9-488 3 29 '7 3i i? 25 49 84 112 I 4 2 ,6 9 '7i 7 '3 35 99 14 90 20 91 10 97 13 92 354H 354-5 354-7 353-9 354-8 354-1 -15-1 -14-9 -15-4 -'S'| -15-4 -'5'3 -74-7 -63-1 48-0 -35'3 Means 8 144 145-65 - 5-92 - 8-5 TAKEN AT GREENWICH, IN INIHA, AND IN MAUKITIfS, IN THE YtCAliS 1882 TO 188;''. 275 .\i IMS ui 1 IMiojiraphir Positions of Groups of Sun Spots continued. Greenwich E"' ie. Projected Area of Area for Group. M, a Longitude of Group. V.r, Latitude of Group. I/"IH from Central Meridian. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Y , Ut! Longitude B Central Meridian. Umbra. Spot Umbra. Whole Umbra. Wh.,1.. Spot. Qabi i Whole Group 171 6 continued. Group 1720. Two principal spota, a and b, and a stream of small upot* ; a has divided Into two by July 17, and breaks up still further on the succeeding days ; b at ont has two nuclei, but on July 15 and following days there ia only one. |8S .luly 10-439 1 1 -406 12-195 <3 '4-494 '$484 12 12 '9 10 2 121 121 1 08 107 54 "3 6 7 II 8 : 64 67 65 80 54 20 o 354' 353'S 354'' 353-8 353-5 35*7 o -15 1 -15-1 -15-0 -14-8 -14-9 -15-0 O + 4' 1 + 16-7 + *7'4 + 44'' + 57'* + 69-5 i88 5 . d July 12-195 13-489 '4-494 15-484 16-459 '7H93 18-180 19-641 20-560 21-507 "'475 23-410 *4'45' 38 77 92 I 6 63 83 '59 80 38 28 6 10 o 296 586 864 960 875 739 849 624 487 3'7 2OI ' '7 9* 105 85 7* 35 34 4* 80 43 21 '9 5 '3 o 845 657 663 596 478 378 4*7 336 *95 **4 '74 48 *45 246-3 246-0 247-0 *47'4 *477 246-6 248-1 248-8 250*0 248-2 *457 *45'4 *44'5 O + 9'5 + 1O'O + 9' 6 + 9'3 + 9'4 + 9'* + 8-9 + 8-3 + 8-0 + 8-4 + 9-3 + 9'* + 9-3 80-4 -63-7 -493 -35-8 -22-6 10-0 + 06 + 20-6 + 34- + 447 + 55' + 67-1 4-80-0 Means ... ... 1 1 77 3>4'3 -15 11 Group 1717. A spot, with smaller spots following, one of which has disappeared by July 6, and Imve coalesced by July 7, to form one spot. July 5-326 6-460 7-482 - 10 22 8 $ I 12 95 218 "4 6 16 8 8 66 68 206 1 68 824 84-1 83-9 84-4 ~'7'3 -166 16-9 -i 6-6 + *4'8 + 4'"4 + 547 + 67-9 Means ... ... 43 4" 247-05 + 9-11 Means ... ... 10 127 8370 -16-85 ... Group 1721. A very small spot Group 1718. A regular spot, a. A faint spot follows a on July 9 and the succeeding days. It baa divided into two portions by July iz. July 14-494 o 10 o 7 2566 + 2-6 -397 Means 7 256-6 + *'6 July 9-488 10-439 I 1-406 iri9S '3'4 S 9 '4'494 '^484 16-459 '"493 18-180 19-641 20-560 10 <7 45 1 I ! 99 9* 84 56 66 79 33 5 140 3*9 437 488 587 486 49' 460 345 338 160 74 18 "7 33 69 53 48 44 32 43 60 4* 12 H4 345 333 306 316 2S * 2 I 260 224 *54 203 1 86 290-1 289-6 289-7 291-3 292-1 293-0 293-2 293-8 293-8 294-1 *93'5 *93'5 - 7'5 - 77 - 7-6 - 7-8 - 8-0 - 8-2 - 8-4 8. . -7*'S 60- 3 -47'4 -35-4 -17-6 - 3'3 + 10-0 + *3'5 + 37'* + 46-6 + 65-3 + 77-5 Group 1722. A regular six>t, a, with two companion*. These are mea*nrrd together on July 15 and 17, and with the large spot on July 19. Only the large spot, a, ii aeeu on Jnlyio. Two spota, 6 and e, have appeared by July 11, followinga; b increaaw in sir--, and ban broken into two, d and e, by July 13. 4 - 8-8 - 9'3 - 9-8 lO'O July 14-494 15-484 16-459 '7'493 18-180 19-641 20-560 21-507 "'475 23-410 *4'4S' 25-576 o 2 9 43 49 29 17 8 4 2 *4 '9 "5 218 282 3*' *'7 170 285 "9 426 370 4> o 2 8 *9 *9 '5 9 4 o *5 20 53 -13-4 2-1 + 10-5 4-22-6 + 34-5 Means 8 144 z>3'34 -I3-2I Means ... 73 396 175-12 Group 1725. Two small spots, measured together. -11-35 Group 1729. A small spot. July 16-459 '7-493 18-180 o I o ii 17 1 1 o I o 12 '3 7 209-4 209-4 208-4 - 6-9 - 7-8 - 9'i 60-9 -47-2 -39-1 July 22-475 23-410 O o 24 5 o o '9 6 241-6 241-1 + 15-0 + '47 + 50-9 + 62-8 Means o 1 1 209-07 - 7^3 Means o 13 24I-35 + 14-85 ... Group 1726. Tlner ivell-defined spots, with small companions, on July 17. Only one small spot is seen on July 19. Group 1730. Two small spots. The second has increased in size by July seen on July 24. 23. The first is not July 17-493 1 8- 1 80 19641 8 6 o '59 32 6 6 4 o 98 23 8 288-4 288-7 291-9 -10-7 -M-6 -12-8 + 31-8 + 41-2 + 637 July 22-475 23-410 24-451 o 10 47 IOO 35 o 7 o 32 62 20 151-8 150-9 149-8 -16-8 -17-5 -18-4 -38-9 -27-4 -'47 Means ... 3 43 289-67 -11-70 ... Means ... 2 38 150-83 -17-S7 TAKKS AT GREENWICH, IN I.NUU, AND IN MAURITIUS, IN THK YEARS 1882 TO 1885. ...I Hi'lHM.Tiipliii 1 Positions of Croups of Sun Spots contiitunl. Date. Greenwich Civil Time. Two small spoU remain on Projected A tea of Area fur Group. M..r, Longitude of Group. Mm* Latitude of Group. itude iri'iii Central ;ian. lut> Greenwich Civil Time. Projected Area of Area for Group. Mean I/>M-i'ti ;. of Group. Mean UUtode of Group. I/ -fa if !: Central Meridian. Umbra. Wh"le Spot. Umbra. Spot. Umbra. Whole Spot Umbra, \vi...;.. Spot on July Inly 17. 5 33 '3 16 *9 14. Bo 61 2 '4 us 212 6 9 Qmp ,h have 4 20 8 16 1731. broken up by July 15. Only three spot* Group 1735. Two small spots. l885. d July 31-459 Aug. 1-414 39 o 8 O 3' 8 119-5 118-5 -14-1 -14-1 + 47'6 + 59-3 188 .Inly 24-4^1 I5'S76 26-501 +33 | *S'44' 46 170 I 9 I 4 9 I I v 4 1186 118-9 118-8 1 18-9 I 2'0 -1 1-8 o 4'" - 3 I-| -18-6 - 6-3 + 7'z -12-5 -13-1 12-9 Means O so 119*00 -14 15 Group 1736. Two spots, a and b. Two smaller tpoU are seen between them on August 5. On August 7 another companion is Men. Only 6 remains on August 9. M.SJIS II 122 11872 12-46 Group 1732. 1 A small spot, ii. Two other*, 6 and e, have appeared by July 16. a has disappeared by Jnly 17, c by July 30, and l> baa broken up into several portions by July z8. Aug. 3-188 4-409 5-488 6-389 7'45' 8-386 9-210 6 o 3> 9 '4 '4 o 38 150 185 '79 167 4 12 4 o '5 8 9 o 21 76 93 94 98 *7 IO 87 10-0 11-3 10-5 95 9'* 8-3 -)- 8-0 + 8-0 + 7'5 + 7'5 + 7'4 + 7'i + 6-9 -27-0 - 9-6 + 5'9 + 17-1 + 30-0 + 42-1 + s*- July 24-451 25-576 26-501 433 44' 19-546 30-482 3'459 1 Aug. 1-414 2-5.6 3-188 o o '3 28 1 1 *3 8 '3 9 r 8 '7 66 II 94 1 06 '54 '*7 67 54 28 O 8 16 6 13 5 10 10 8 ' 5 16 48 49 II 85 77 49 58 44 92-3 92-8 945 95'9 96-4 98-3 100-7 101-6 103-0 104-3 104-8 ~'3'4 -13-0 -13-2 -'3'3 -72-2 -56-9 -43-0 -29-2 12 9 -12-4 -11-7 -11-7 -11-6 -12-4 -13-1 '5 3 + ''3 + '5'9 + *97 H-43'8 + 59-6 + 69-1 Means ... 6 60 9-64 + 7'49 ... A regular spot, by Angusl spot, d, h Group 1737. a, on August 5. Another spot, b, with two companions has appeared S. By August 9, b seems to hare changed it* position, and a new as appeared, b breaks up, and is measured as two on August 11 1 Means 7 5 98-60 1 2"6l and 13. *5 3* 35 57 101 128 98 45 4' 22 IO 4 109 |66 208 454 617 873 73 493 370 186 I! 60 35 3 *5 12 67 53 26 *7 '9 12 9 '55 58 '47 2 7 S 34 463 398 *93 250 163 122 '4* *977 297-9 297-9 298-1 298-3 199- 1 299-8 299-1 299-6 298-2 298-1 197-1 -10-7 -10-4 -10-5 -11-3 -11-9 12-2 -II - -11-9 -115 iro -10-7 -io-8 -677 -55'5 -41-6 29-0 -178 + -* + '3'3 + *5'3 + 38? + 52-6 + 64-1 + 76-1 Group 1733- Two >poU, a and 6, when lint seen. A third spot, r, has Income detached from b by July it. Small companions are aeen on July 31 and following days. Aug. 5-488 6-389 7 '45 1 8-386 9*310 1 .luly 27-433 44' 29-546 30-482 3''459 Aug. 1-414 2-516 3-188 4-409 5-488 6-389 | 7'45' O 5' 34 33 *; 90 74 4' 18 10 6 4 94 291 35* 401 4'4 555 5*3 4*5 236 *5* no 87 o 64 *9 *4 16 5' 4* *3 11 8 6 7 207 362 302 *79 *57 |H 298 248 '5* '95 1 12 140 51-6 50-0 49' 5 49'7 49-0 48-8 48-4 47'9 48-1 48-1 47-9 47'* -21-4 -21-4 -21-8 -21-3 -21-6 -21-7 -73'5 -61-7 -47' 5 -35'' -22-9 -10-4 + 37 + 12-2 -f-28-5 +4*7 + S4'5 + 6 10-513 "457 12-401 13-407 14-541 15-428 16-407 22-0 21-2 Mull IIS ... ... 33 *4 Z 2 9 *- 4 2 1 1-22 ... 2I-O -21-5 21-0 Group 1738. A regular spot, o. Several iniall sjioU have appeared fallowing a by August 7, forming a long stream mi the succeeding daya. 1 Means ... *3 2 39 48-85 21-51 AU K . 5-488 6-389 7'4S> 8-386 9-210 10-513 o 47 64 53 76 64 57 13 o 60 o 3' 3 4 5* 6 44 422 32 47* 4 59 33 433 3' 4 79 368 *53 *54 267 *37 286-5 288-2 287-0 286-6 287-5 287-7 287-9 288-4 12-1 -11- -llj - Il'4 -117 -ii ; 1 1 'i -78-9 -65-1 -S'S -40-5 -28-6 1 1-2 + 1-4 -(-14-5 Group 1734. A small spot. July 28-441 '3 11 58-5 -12-4 -53-2 1 Mean- ... ... o II 58-5 -124 1 +>/ 12-401 -il-j 278 AREAS AND HELIOGRAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Group 1738 continued. Group 1742 continued. 1885. d Aug. I3'47 14-541 15-428 16-407 17-430 54 4 10 17 I 356 294 178 1 06 26 33 35 25 25 5 213 216 171 161 122 288-9 289-4 290-1 289-8 290-0 o II- II 1 II- 1 1- o + 28-2 +43-8 + 56-2 + 68-8 J-R^-fi 1885. Aug. 16-407 17-430 18-191 I9-475 12 4 9 2 161 98 41 8 8 3 8 2 95 71 38 12 o 253-3 253-4 254-6 252-0 o + 13-0 + 12-9 + 11-7 + 11-7 o +32-3 +46-0 + 57-2 +7i-4 Means ... 4 70 252-08 + 12-74 Means ... 26 204 288-31 -11-37 Group 1743. A group of four well-defined spots, the two smallest, long. 272-! being together. measured Group 1739. Two small spots. Aug. 7-451 I 27 i 27 36-2 I I '2 + 567 Aug. 9-210 12 68 8 47 272-9 + 12-8 -43-2 Means i 27 36-2 II-2 Means ... 8 47 272-9 + 12-8 Group 1740. A group of very small spots. By August 9 the preceding spot has broken which are measured together. Only one spot is seen on August 10. into two, Group 1745. Two spots, a and 6. There is a small companion on August 1 1 , and a different one on August 12. By that day b has broken into two. On August 13 there are three small spots following a, two of which have disappeared by the next day. b has broken up into a group of small spots by August 16, and is not seen after August 17. Aug. 7-451 8-386 9'2IO 10-513 2 3 23 15 77 77 23 i 2 12 O 8 4 4i 15 332 5 333-3 333' 336-0 + 21'0 + 20-4 + 2I'O + 22-O - 7-0 + 6-2 + 16-9 + 37-1 Means ... 4 26 33370 + 2I'JO Aug. 10-513 11-457 12-401 i3'47 14-541 15-428 16-407 17-430 18-191 '9'475 20-492 O 19 12 44 29 4' 25 18 20 1 1 33 192 233 326 298 284 235 171 H3 56 15 19 9 27 16 24 '4 10 12 9 o 60 199 174 '93 158 155 119 9i . 67 44 '7 224-5 225-3 226-1 227-8 227-6 227-7 228-4 229-6 230-8 231-5 231-6 + 6-8 + 6-6 + 6-1 + 6-4 + 6-5 + 6-6 + 6-8 + 6-3 + 6-3 + 6-7 + 7-i -74'4 fii-2 Group 1741. Two small spots. -47-8 -32-9 i 8-0 - 6-2 + 7-4 + 22-2 + 33-4 + 50-9 + 64-5 Aug. 8-386 o 28 o 21 13-1 + I 5 -6 + 46-0 Means ... 21 13-1 + 15-6 Group i74z. One large spot when first seen ; it has broken up into a group of small August 9, which continually change in number and position. spots by Means 13 116 228-26 + 6-56 ... Aug. 8-386 9-210 10-513 11-457 12-401 i3-47 H'54' 15-428 I 5 9 IO 12 O I 64 85 128 192 77 r il 67 37 o 4 6 6 6 o i 144 99 98 119 42 68 35 '9 249-1 250-5 249-2 250-8 251-5 253- 253-1 *54'5 + I2'I + 1 1 '9 + 13-5 +13-5 + 13-2 + 137 + 12-7 + 13-0 78-0 -65-6 -497 -357 -22-4 - 77 + 7'5 + 20-6 Group 1746. Two spots on August 12. On the second day there are two spots close together measured as one. Aug. 12-401 13-407 2 28 18 i o 21 I I 232-3 233-8 -19-5 -19-1 41-6 26-9 Means I 16 233-05 -19-30 TAKEN AT (iKKKNWlril, IN INIUA. ANI> IN MAURITIUS, IN THE YEARS 1882 TO 1885 LNM ami Helin^rujihic I'usitioiis of (Jr.mps of Sun Spots continued. Longitude :: .. Central Meridian. I'.- :irich Time. I'rnjected A re* of Area for up. v.. M Longitude ruup. Mean Latitude of Group. Ixingituile fr.iin Central MeridUu. I..-. Greenwich Civil Time. I>TojecUd Ana of Am for Group. Mean l-S.V.Ul. of Group. Ueaa Latitude of Group. Umbra. Whole Umbra. Umbra. Whole Spot I'm' r.i WhoU yd liroup 1747. Four small faint spots <>n August 13, tlirw being mranurcd together ; of these oae hu liji|rtsl by Auguil 14, ami the other two are measured separately. Group 1751. A small S|t. l88 5 . t Aug. 19-475 I 4 1 4 233-9 - 9-8 -r-53'3 1885., Aug. 13-407 '4'54' O 6 26 60 3 16 3* o 226-3 226-5 o - 8-7 - 9' 1 -34'4 -19-1 M rans ... ' 4 *339 - 9-8 Mean- 2 *4 226-40 - 8-90 Group 1753. Two well-defined spoto. (Iroup 1748. A regular s|x>t. Aug. 20-492 16 94 '* 94 223-3 -.3-8 + 56-2 .Means ... ... 16 94 223-3 -13-8 Aug. 14^41 '5 16-407 430 18-191 '9'475 20-492 2 1 492 22-499 23-21 1 *4'577 *5'459 18 III 31 203 48 320 56 395 '5 435 104 465 62 426 68 331 58 35' 51 280 7 '37 5 53 3' 35 38 36 61 55 34 39 37 37 10 198 226 *57 *57 256 *49 230 189 H4 205 150 94 '74'3 173-6 '73'4 173 i 172-9 172-8 '73'3 173-0 172-9 73-3 172-8 172-6 -13-8 -14-2 -14-0 14-1 -14-1 -7''3 -60-3 -47-6 -34'3 -*4'S - 7-8 + 6-2 + 19-2 + 3*'4 + 42-2 + 59'8 -r-71-2 Group 1754. Two Urge spots, a and b, with smaller ipota between them, i decreaaei in aize, and is not teen on September i, by which day the roup as a whole has very much increased iu aiie, and consist* of several fine upota, which have become two large spotx with small companion* by September x. -13-9 -13-8 -14-2 ~'3'4 -14-0 -13-6 Aug. 3 211 H'577 *5'459 26-457 27-509 28-480 *9'444 30 31-210 Sept. 1-399 2-391 3-4*3 '9 4 3* 43 45 10 *7 Xo pho 89 44 107 .6 136 4i 8 465 439 450 III bngraali 426 5H 8'5 6j 35 39 *4 26 *5 5 4 (35 55 34 "3 3* 280 *? 360 *7S 248 '75 141 201 26l 436 876 494 57 A 54-6 54-8 557 57'* 58-4 587 57'3 55-9 56-8 56-6 55'9 iro - 9'3 - 9'3 " 9 '2 10-6 -10-7 -74'' -58-4 -46-6 -32-6 -17-1 - 3'' -f-IO'O + o-j) + 30-5 + 47'' + 60-0 + 7* '9 Means 35 *'3 173-17 ~'3'93 10 7 -10-5 lO'l - 9-8 I O'l - 9-6 i iroup 1749. A small ipot. Aug. 16-407 7 2 9 231-9 - 9' + 10-9 Means 36 348 56-58 10-09 M tans ... 2 9 231-9 - 9-0 ... Group 1755. Two small spot*. They have greatly increased in siw, and a nw spot has appeared by August 18. Group 1750. A group of faint spots. Only s|.ot is seen on August 10. Aug. 26-457 27-509 28-480 *9'444 o *4 1 1 12 60 121 2 7 6 285 ,6 9 4 35 81 238 35 110-9 111-9 111-3 1 1 1-6 -14-6 -14-9 -15-1 -14-8 -4-22-6 -r-37'6 +49'8 + 62-9 Aug. 18-191 9'475 20-492 21-492 22-499 23-211 3 9 o 4 o 12 65 58 3' *3 6? 6 9 o 3 12 3* *9 16 '4 2 60 187-8 1887 187-1 190-2 1909 , . . + 6-0 + 5'4 + 5"' + 6-2 + 6-6 + 67 - 9-6 + 8-1 + 2O'O -T-36'4 + 5'4 H-59'8 Means 10 176 in 43 -14-85 Group 1756. A well-defined Kpot with three fainter ipoU preceding on August i. The preceding spot increase! in size after August 19. One of the middle spots ha* disappeared by September i, aud the other ha* broken into a number of very small *poU by m!-r Means 5 26 189-27 + 6-00 Group 1751. A group of four faint spots. Aug. 27-509 28-480 *9 - 444 3 31-210 . 1-399 2-391 3423 9 3* No pho 102 39 57 46 '95 *35 33 isr 355 55* 44 '3 8 20 (37 53 20 3* 3 212 .83 *4 266 328 185 3'5 3*4 12-3 13 2 "43 16-1 179 20-8 21-4 227 - 5 - 4'9 - 4'5 - 47 - 4'9 o -48-3 -344 2 1 -O) - 7'5 + ii-i -(-24-8 + 397 Aug. 18*191 19 2 4 5 56 35 '4 3 33 18 166-2 165-3 + 20-3 + 20-5 -31-2 -'5'3 Means 9 26 16; + 20-40 - ; ' - 47 280 AREAS AND HELIOGRAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Group 1756 continued. Group 1759 continued. 1885. Sept. 4-525 5'4H 6-408 7-273 22 8 2 O 359 240 '15 12 19 10 6 o 320 316 3*7 43 o 22-9 *3"5 227 '3"4 - 4-9 - 4-4 - 4-4 - 5-6 + 54-5 + 66-8 + 79-2 + 81-2 1885.,, Sept. 9-410 10-260 11-208 12-229 2 3 32 10 i 105 116 69 38 '4 23 9 i 64 82 64 54 293-7 293-4 294-6 2 93'9 -12-7 -12-6 -12-7 -13-0 o (-297 - 40-6 + 54'4 + 67-3 Means 21 252 '8'43 - 4-83 Means 12 88 293-37 -12-42 Group 1756*. A small spot. Group 1760. A small spot on September 4, which has divided into two by tlie next day. Aug. 27-509 28-480 O 31 o 29 o 37 24 8-2 7-8 + 6-1 + 6-6 -66-1 -557 Sept. 4-525 SHH 6-408 7-273 28 o 8 43 236 107 66 '5 o 5 23 127 62 43 327-8 327-8 328-0 328 3 -11-7 - 0-6 + ii-i + 24'5 + 36-1 Means 3' 8-00 + 6-35 1 ' 5 -ii 3 i 1-8 Group 1757. Two spots which increase in size and have coalesced by September 3. This divided into three by September 5, but is measured as one except on Sep Small companions are seen on August 29, September 5 and 7. spot lias Means ... 5 64 327-98 -11-58 Group 1761. Three small spots. Aug. 28-480 29-444 30 31-210 Sept. 1-399 2-391 3-423 4^5 5'4H 6-408 7^73 8-404 9-410 10 29 No pho 106 73 '35 64 53 68 37 49 '9 9 123 300 tograph. 702 97 I 1117 795 718 456 308 298 176 63 23 3 6 (55 74 4' 7' 3 2 2 7 37 23 38 21 '9 337 374 433 491 55 2 592 399 368 252 194 229 199 130 34'9 34' - 3 34>' 340-6 34-9 347 34'-i 34'- 341-3 34-3 342-0 34>"7 341-0 + 10-7 + II-2 + 10-0 + 8-7 + io-6 4-10-6 + 107 + 10-3 + 10-6 + 10-5 + 9'9 + 9'9 + 10-4 -80-6 -67-4 -56-1) _ 44 -8 -28-8 -15-9 - i '9 + 12-6 + 24-6 + 37-8 + 49-8 + 64-4 + 77'o Sept. 5-414 o 39 21 | 304-9 12-2 I 1-8 Means o 21 304-9 1 2'2 Group 1762. A very small spot. 1 Sept. 5-414 o 10 o 6 286 i -11-2 30-6 Means o 6 286-1 I 1-2 Means ... 38 350 34i-i4 + 10-32 Group 1763. A very large spot. The following portion, which is of irregular shape, has become detached by September 13 and 14, and is measured in five portions. These have disappeared by September 15. The nucleus lias divided into two portions by September 14, and the whole spot by September 17, although still measured as one. Some small spots are seen near the principal spots on September 14, 18, and 19. Group 1758. Two very small spots. Aug. 29-444 21 10 45-' - 6-8 - 3'6 Means o IO 45-i 6.0 ... Sept. 8-404 9-410 10-260 11-208 12-229" 13-178 14-558 15-389 16-572 17-180 18-507 19-214 26 59 ,64 2.9 54 194 128 95 90 117 5' 40 246 506 832 885 1149 1294 "95 816 74 1 616 375 338 52 66 136 '47 9 1 06 69 54 58 85 <5 62 498 566 697 592 67, 703 644 464 479 448 43 533 203-8 203-8 203-1 203-7 202'6 2O2'5 202-7 203-3 203-0 203-0 203"! 203-2 1 V4. 75-C Group 1759. A regular spot, a. A small companion is seen 011 September 3, ami another ou September 7. -'3'5 -I5-3 -'3'' -12-8 6o'2 -49-7 -36-5 24-0 Sept. i -399 2-391 3'4 2 3 4'5 2 5 5'4'4 6-408 7'273 8-404 O 16 2 1 18 2 I 18 24 22 2 9 87 , 3 6 54 '97 205 '75 '34 o 20 I/ 12 12 10 13 12 69 I 12 "4 101 114 1 1 1 94 75 293-7 291-9 292-9 292-8 293-1 293-2 293'5 293-7 I2-I I2'I 12'I 12-1 -I2- 3 -I2'3 76-0 -64-7 -50-1 -35-6 -23-6 -10-3 + '"3 + 16-4 -13-2 -13-2 -13-6 -13-6 -14-2 -14-1 14-6 -11-7 + 6-6 + 18-2 + 33-6 -4 417 + 59'3 4-68-7 124 -12-6 Means 82 558 203-15 -'3'55 TAKK i'ENWICII, IN INMA, ANI> IN M AI'lilTIl'S. IN T1IK ' TO 1885. i : nijillif Positions of (Jnnij.s nf Sun Spots continued. Greenwich 1'rujected Area of Area for up, V, U ' 'Up. Veen Latitude U|l. Longitude linn, Central lian. Date. Greenwich Time. Projected Am Area of ,up. V Longitude Whole of Croup. Spot, M. , Utt >Up Central Meri.li... Umbra. Umbra. Whc.ll- Umbra. mbra. l88 5 .,, -.78 | '4-558 Group 1764. A group of faint Group 1768. A large regular >| ot. 5 37 O O 64 162 256-6 *57'4 o -l6- 3 -'57 + 4 Z '4 + 61-3 885., !. 21-443 22-44I 23-428 Z4'574 *5 - 47 2644- 27-132 28-469 29-164 30-195 " t, 1-388 2-1-1 3-381 '5 9 6 5 45 95 62 66 66 20 33 o 6> 150 120 '54 354 43 44 406 4,8 320 246 206 61 o 20 8 37 *3 48 3* 35 39 '5 3* '97 2OI 106 101 202 "4 "4 208 222 I 9 I |8 9 2O2 118 O 13-9 23-2 23 1 13-0 *3'3 *3'3 zi-8 *33 *3'5 *3'3 '3'4 Z 3'5 *53 o + 7'3 + 70 + 7'' + 7'* + 7'4 + 7'5 + 77 + 78. + 7-5 4- 7'7 + 77 + 7'$ + 7'8 O -8l 2 -68-6 -557 -407 -29-4 ~'5'7 - 7'* + 109 + 2O-* + 337 + 49-6 + 60-0 + 757 M.MUS- ... o 113 257-00 16-00 ... Gronp 1765. Two faint sjots, measured u one, on September 16. On the next day the group appear* as three well defined spoU with some very small companions. On 'iil.er 19 only three spots are seen. i--i8o 18-507 19-21 + 6 IX 16 3 61 >:- '5' 53 ,1 9 2 50 88 87 3 ,22-4 122-6 123-9 121-0 -'5'3 -14-9 -14-6 -47-0 -387 -19-9 MM, 1118 ... ... 22 183 23-30 + 7-48 15 2 13 j Gruup 1769. A number of small apote irregularly distributed. The gioup i mnasnred in two dusters on September 15, but it becomes more acattered on the succeeding dayn until September it, after which date many of the apoU disappear. MlMMS 8 64 122-48 I5-00 Group 1766. A small spot on September 19. A second ii seen near it on September 11. On September 11 the gronp consists of four small spot* which are measured in pain. Sept. 2 5 -407 *6447 27-132 28-469 29 164 30-195 o 7 44 5 *$ 7 38 '39 166 "43 1)8 17 4 24 8 '3 3 *7 8s 91 73 7' 9 77 + 16-6 8-4 +16-8 7'8 +17-8 87 +17-1 8-6 +17-4 8-0 +17-3 -45-0 30-6 *2'2 - 37 + 5'3 + 18-4 Sept. 19-214 20-561 zi'443 22-441 2 o 22 22 5 3* 1 10 2 O O 1 1 16 3 17 57 85-5 86-4 83-3 83-4 + |6'3 + 167 + l6-l + 16-9 -49-0 -30-5 -11-8 - 8-4 Means ... ... 3 *3 84-65 + 16-50 ... Means ... ... 9 S9 8-20 +17-17 Gronp 1767. A large regular spot. A small spot is seen near it on September 15. Group I77- A regular spot. A rery small spot U seen near it on September tt. Sept. 2 I -44 3 22-441 23-428 4'574 25-407 '6-44: 27-132 .8-469 29-164 30-195 Oct. 1-388 2-171 3-381 12 '4 12 4 9 18 66 *7 35 33 7 '5 o 9 i 146 '4* 9' *73 250 *79 228 264 97 107 9' '3 i? 16 10 3 5 9 34 '4 20 21 6 '9 o 202 1 68 "4 57 '53 129 4* 1 20 '49 128 93 1 IO 36 287 28-3 28-2 28-3 28-4 28-9 283 28-8 28-9 28-2 28-1 28-6 26-6 2'Q -76-4 -63-5 50-6 -35H -*4'3 lO'l + 16-4 + 25-6 + 38-6 + 54-3 + 65-1 + 79' - 3-' "7 - '4 - '4 - '4 - -8 - '7 - i - 3'' - *; Sept. 25-407 26-447 27-132 28-469 29-164 30-195 Oct. 1-388 2171 3-381 4-567 5-200 6 to 26 17 35 4' 14 28 10 6 2 89 87 '54 '43 '94 '75 162 '45 112 3* 16 8 9 '9 10 '9 20 7 'i 5 2 "7 75 "3 8. 103 88 83 78 7' 32 1 7 344-4 344'' 343'' 344'* 344-3 3445 345'' 345 * 345'* 345'* 345 3 + 12-1 + 12-1 + 11-3 + 12 1 + 12-0 + 122 + ii-o + 12-0 + ..8 + 117 1-4 -68-3 -54-9 -469 -28 2 19-0 - $' + 1.-3 + 217 + 37-6 + 53'3 + 617 Means '4 I2 3 28-33 - 2 64 Means ... II 78 34460 + 11-97 282 AREAS AND HKUOGKAPHIC POSITIONS OF GKOUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continwd. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Group 1771. A small spot. Group 1775. A regular spot. It has broken up into several small spots by October 13. 1885. Sept. 26-447 27-132 28-469 29-164 8 3 27 2 4 12 II o 4 o 2 16 13 6 9 o 15-9 15-4 ,5-9 16-0 o - 8-1 - 7-8 - 8-0 - 8'5 o -23-1 14-6 + 3-5 + 12-7 I88 5 . a Oct. 5-200 6-398 7HI7 8-184 9-446 10-151 1 1-162 12-268 J3''55 14-151 8 1 1 H 37 10 10 24 '3 12 4 21 9' 141 177 '45 164 135 81 72 28 4' '5 22 27 6 5 13 7 7 3 I 10 124 127 130 86 92 73 44 4 2 '9 200-7 201-4 20P2 2CO-6 200-9 200 6 200-5 200'0 199-6 2OO'4 o -13-3 -13-4 -13-6 -13-3 ir6 -829 -66-3 -53'' -43-6 26-6 Means ... ... 2 1 1 15-80 8-10 -.3-6 -14-1 -17-7 - 4'5 + 9'7 + 2TO + 34-9 Group 1772. A small spot. -14-7 -147 -IS' 1 Sept. 28-469 o 20 10 257 + '3'4 + I3-3 Means ... 5 85 200-59 -'3-94 Means 10 25-7 + I3-4 Group 1776. A small spot. Two others are seen near it on October n. Group 1773. Two large regular spots, a and 6. Several small spots are also seen near b. Oct. 1-388 2-171 3-38i 4-567 5-200 6-398 7-417 8-184 9-446 10-151 11-162 12-268 *riss 28 125 in '54 207 171 158 173 117 11 8 95 59 3 2 7 6 606 933 971 1 156 "35 1054 1051 75 709 537 263 49 5 146 87 9 8 122 9 2 86 97 78 89 98 106 8 510 727 745 619 680 619 576 597 495 532 543 465 '34 262-5 261-8 261-7 261-7 261-2 261-3 261-8 260-8 261-5 261-4 261-4 261-1 *55'5 16-9 16-9 -16-5 -16-6 -16-5 -16-5 16-4 -167 -i 6-6 -i 6-6 -16-8 -i 6-7 18-9 -71-3 -617 -45'9 -30-2 -22-4 - 6-4 + 7'5 + 16-6 + 34' + 43'i + 56-4 + 70-8 + 76-9 Oct. 7-417 8-184 9-446 10-151 1 1-162 o 7 4 3 i 20 22 17 9 23 o 6 3 2 24 '9 ii 5 12 I 9 ri I9I-3 I 9 3-0 >93'5 192-0 -i r6 -117 -12-5 -12-4 12-6 -6 3 -2 -52-9 -34'5 24-8 -I 3 -0 Means ... ... 2 H 192-18 12-16 Group 1777. A small spot with a very small companion on the first day. Means 89 557 261-05 -16-82 ... Oct. 17-212 18-147 3 18 12 O 2 25 ii 55-5 57-7 + 6-5 -69-6 + 6-3 -55-0 Group 1774. Two spots, a and 6. a has increased in size by October 5, and become a well- defined regular spot ; 6 has broken up and forms on October 5, and the succeeding days a train of small spots following a. a has broken up by October 8, and the group consists on October 9, and the succeeding days, of a number of small spots irregularly distributed. Means .., 1 18 56-60 + 6-40 Group 1778. A spot which has very much decreased in size by October 18. Oct. 4-567 5-200 6-398 7-417 8-184 9-446 10-151 11-162 12-268 13 5' 20 34 37 10 28 20 114 '58 246 258 '45 87 74 74 IOI 7 28 10 18 20 7 29 35 66 138 124 132 78 55 56 76 ,85 262-7 263-6 265-0 266-3 264-9 265-6 266-5 265-5 264-0 I'2 l-o ro - '5 - 0-9 - 0-8 - '5 - '4 - 3'9 -29-2 20-0 - 27 + I2'0 + 20-7 + 38-1 + 4 8-2 + 60-5 + 737 Oct. 17-212 18-147 5 2 57 8 4 2 84 4 54-7 54-8 + 14-9 i -70-4 + 15-1 -57-9 Means ... 16 IOI 264-90 - 1-24 Means ... ... 5 44 5475 + 15-00 TAKEN AT GREENWICH, IN l.NI'IA, ANl) IN MAU11ITIUS, IN TIIK \K\ . 283 1 . ' >.sitioiis nf Groups of Sun Spots continued. 1 Civil . An* of Area for 'I'- l-ongituile nwp, Moan latitude Longit . Mean Latitude of Group U.ngitudi from Ceutr.1 Meridian. I'mbra. Umbta. Wl,,,l,- Umbra. Whole ID* Umbra. Whole tiroup 1779. 1 A large regular spot, a, (ulluwi-tl l.y u stiv.im i.t Mii.-ill. r a|>oU. Of t)iM, two, b and c, arc -./. 'ding day. much : ;:i tlmii n Ucti.<-i 25 and 17. 6 and c diminish in size hiv t.i .lay, ' li i><-areJ by October 13. The smaller S|U of i .slant clianges. Group 1783. A regular spot, a, followed by several small spots, a diminishes in >ii* afUr October 16, and the small spot* have all diap]Mared by October it. 1885.. Oct. 20-509 21-272 22-418 23-165 *4 -| 75 *5'558 16-273 27-422 28-436 29-431 30-170 3>''55 Xov. 1-407 10 64 79 104 56 63 31 '3 12 17 '9 45 3*6 439 475 54* 444 4 A 4 160 191 158 i n 17 O '5 F 61 *7 *9 3* 18 ,1 11 47 *45 191 3" *79 181 126 210 150 '3' 130 "3* 58 37 359'4 1'2 2-2 *'9 4'4 4'4 I 9 6-0 5-8 6-j 5'9 6-0 - 3 ' - 4' - 3-9 - 3'5 - 37 - 3'9 - 3'9 = fl - 37 - 4'3 - 4'5 - 4-o -77'9 -72-1 -55'* -44'4 -30-4 -107 l'2 + ' 4'5 + 29-0 + 4''9 + 52-0 +646 MI-J 885., '^l 19-416 20-509 1 2: 23-16; *4 : *? 26273 \i- 28-436 5' 5' 73 81 65 90 119 18 61 'i 59 35 606 668 663 73* 6>3 37' 410 *3* 121 O 82 45 ;i 33 45 61 1 1 4 *7 9 258 652 538 443 388 380 389 3' 219 272 206 ,64 40-8 37-8 40-1 40-5 41-0 ^ 42-6 437 46-5 46-6 46-5 45-8 + 6-8 + 7'8 + 7'4 + 8-0 + 7-9 + 7'3 + 7'* + 7-> + 6-8 + 6-4 + 67 + 7'i -84-, -74-9 -55-9 -41-1 -30-5 -13-8 - 4-0 + 10-4 + 3''4 +41-0 + 56-1 -f68-8 Means ... 16 192 4-08 - 3-85 ... Means ... ... 37 35* 42-88 + 7'2I Group 1784. A very small spot on October i, three spots on O-.tober 13, iix spots, measured in three cluster*, on October 24. On October 15 and the succeeding days the group consists of a stream of small 8|>ota, a and t>, the first and last of the stream, being the largest, o ha* broken up and diminished in siz* by October 17. Group A very small s|>ot on October 18. 1780. Two small spota on October 19. iS-147 o 19-416 i 8 *9 o 2 5 *7 151-1 152-0 - 87 - 8-6 + 38-4 + 56-0 Oct. 22-418 6 23-165 15 73 24-175 42 190 25-558 29 207 26-273 29 319 27-422 44 243 28-436 21 159 29-431 32 149 30-170 43 276 31-155 44 305 Xov. 1-407 7 92 '4 *9 10 '5 *3 1 1 20 3* 40 9 63 130 118 I7 '3' 9 i 9 , 198 *73 3* 3557 -17-4 355-0 -15-0 3547 -5'3 3566 -15-2 356-0 -15-3 357-8 -151 358-4 -14-9 357-1 -15-2 3^-6 -15-6 354-1 -15-8 352-4 -1: 60-7 - 5 i6 -386 t fl-r M'-.VIIS ... ' 16 '5''55 - 8-65 Group 1781. A very small spot. IS > - 9-6 + 7'4 4-21 4 + 33'* + 4''3 4-5*8 + 677 Oct. 18-14- 4 1 1 2 6 83-8 + '3'4 --28-9 Means ... ... 2 6 838 H-13'4 ... Means '9 128 35^76 -15-41 (Group 1782. Two spota, " ami b. Tliev have movi-il away from each other and diminished in size by O -tober 10. '. lia-s disappeared by October 21. Group 1785. A amall |>ot. Oct. 19-416 5 106 20*509 o 29 21-272 o 18 4 O O 77 *9 J3 '39 - 5 139-2 141-9 -10-6 -10-5 10-5 + 43'5 + 57'6 4-70-4 Oct. 23-165 o 8 ' 9 10- 1 4-14-0 + 6. -5 9 108-1 + 14-0 ... s 1 43 140-20 -10-53 M 284 AREAS AND HELIOGRAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographie Positions of Groups of Sun Spots continued. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Longitude Mean from Latitude Central of Group. meridian Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Whole Spot. Group 1786. Two large spots, a and b, ou October 25. Both have broken up by October 27, though on that day (us also on October 28) the spots are grouped for measure- ment so as to correspond nearly with a and b. On October 29 and the succeed- ing days the group has broken up further and spread out into a long stream of spots, but the largest portions of a and 6 are still recognisable and form well- defined spots. The letters are therefore still attached to them. Only a remains after November i. Group 1789. A short stream of very small spots on November i. Only one spot is seen on 1 November 2. The group consists of a number of very small scattered spots on 1 November 3. Only one spot is seen on November 4. The group is not seen at 1 all on November 5. On November 6 and 7 the group consists of a regular 1 spot, a, followed at a little distance by three very small spots close together, 1 which are measured as one. 1885. d Nov. 1-407 2-422 3^32 4-114 5-122 6-129 7-130 O 2 2 3 13 37 '4 30 22 I 12 68 I 18 17 '9 7 '4 12 9 2 87 270-8 271-8 271-2 270-3 274-3 2757 o - 1-4 - 0-4 - rS I'2 - 2'9 - 2 7 -'39 + 05 + 9-3 + 21 3 + 5 r8 + 66-4 1885.,, Oct. 25-558 26-273 27-422 28-436 29-431 30-170 3'-I55 Nov. 1-407 2-422 3"'3 2 4-114 IO 80 71 57 66 7' 70 21 12 *4 10 2 43 624 783 698 775 604 452 248 120 '49 44 '4 9 2 54 35 37 36 36 1 1 7 '7 9 422 719 588 428 424 316 233 '38 75 106 42 303-1 302-5 303-9 304-2 304 - 5 304-0 304-2 305-3 305-8 305-3 306-0 o - 8-6 - 8-6 - 8-6 - 8-8 - 8-9 - 9- - 9'5 - 97 - 9'4 - 9'9 - 9'9 -72-0 -63-1 -46-5 -32-8 -19-4 -10-3 + 2 '9 + 20-6 + 34-5 +43-4 + 57-0 Means ... 5 33 272-35 - J'73 Group 1790. A small spot on November 7. Two other small spots are seen preceding it on November 8. The first of these, a, increases in size very rapidly, and has become a large regular spot by November 10. A great number of smaller spots have appeared by November 9 ; these follow a at a little distance, but the stream does not lie along a parallel of latitude as is generally the case. They have all disappeared except one spot by November 1 3. a has partially broken up by November 12. Means 3* 3'7 34'44 - 9 -I 7 Group 1787. A small spot. Oct. 27-422 28-436 o 5 5 o o 9 5 280-3 280-0 10-4 -107 -70-1 -57-0 Nov. 7-130 8-121 9-139 10-121 I I-I26 I2-142 13-185 8 15 2 7 101 >o 36 17 22 70 217 606 602 357 103 4 8 '5 61 35 3* 2 5 12 37 118 360 4'3 3'4 151 192-5 I94-3 196-5 196-4 196-3 196-2 198-2 -14-4 -14-2 -.3-8 -137 -13-3 -16-8 - 1-9 + 13-8 + 26-6 + 397 + 53-0 + 68-7 Means 7 280-15 -10-55 Group 1788. A large regular spot, a. Some very small spots are seen near it on November 3-4. -13-4 -I2-S Means ... 26 2OI 19577 -I3-6 9 Group 1791. Two small spots on November 7. Not seen on November 8, Two small spots, a and i, on November 9 and 10. A third, c, is seen on November 1 1. a moves forward on November 9, 10 and n. Oct. 28-436 *9'43i 30-170 3'-'55 Nov. 1-407 2-422 3-132 4-114 5'122 6'i 29 7-130 8-121 9-139 12 2 9 65 60 45 I 9 69 83 75 49 4' 28 12 70 '59 269 3>5 335 408 366 389 3 2 5 260 ,92 126 61 4 34 59 44 26 32 36 44 44 33 35 34 3 146 i 86 2 47 229 95 219 193 210 igO '75 164 '54 '55 262-8 261-7 260-5 260-4 260-3 260-3 259-8 260-0 260-1 260-2 260-3 260-1 260-0 -15-7 -15-6 -15-4 -15-1 -15-1 14-6 -14-9 14-6 -14-9 -'47 -15-2 -15-0 -15-2 -74-2 62-2 -53-8 -40-9 -24-4 I I'D 2'I + I I'O + 2 4'3 + 377 + 51-0 + 63-9 + 77'3 Xov. 7-130 8-1*1 9''39 IO'12I I 1-126 5 o 5 I 2 3 2 33 40 2 7 3 o 6 o 18 o 16 22 16 183-1 184-7 185-4 186-4 - 2-8 2-2 - 1-8 - i'9 26-2 + 2-0 + I5-6 + 2 9 -8 Means 37 1*9 260-50 15-08 Means ... 2 '4 184-90 - 2-18 AT GRI-KJJWICII, is INDIA, AND is MAURITIUS, is TUB YKAKS 1882 TO 1885. Areas and Heliogni-'hir Positions of Groups of Sun Spots continued. 1 Citril : I'roj. Area of Area for Group. M. m Ix>iiKitudr uiup. M.I n tilde of G rouj i. Longitinl from Central Meridian. Date. Greenwich Civil Time. Proj^ctl Amof Area for Group. M I-ongitu.il- of Group. Mr.!, Latitude of Group. UngitmU '.: Central Meridian. I'mbra, Whole Umbra. Whole Umbra. Whole Umbra. Whole S|t. Group 1792. A rrgular spot. Group 1795 ruiitinueii. 1885. Nov. 20-148 "'453 22 155 23-21I H''S3 172 99 97 75 '5 86s 575 47* 3*7 208 9* 62 68 7* 22 460 356 334 3'4 310 S3 1 ' 54'4 54'3 55' 55'* e + 147 4-14-8 + '47 + 14-' + 14-0 + '5'5 + J3'9 + 43"' + 579 + 70'3 18? Nov. > 121 9-139 IO'I*1 11-126 | i-i4 8 O 2 2 3' 44 2 9 12 IO 7 7 i i 50 4* 21 7 5 o I2J-0 l4-5 124-8 124-9 I2 S J o + 6-1 + 6-4 + 6-3 + 6-3 + 6-0 e -7i-a -58-2 -45-0 -3'7 -17-9 Means ... 88 536 5J73 +'4'8* ... Means ... ... 3 '5 12490 + 6-22 ... Group 1796. Five small spots on November 14, of which four are measured in two pain. The group lengthens out on the succeeding days, and Incomes a straggling stream of small spots. The members of the group change from day to day. Group 1793. A regular ipot. NnV. 10-121 iris6 ii 142 '3 '85 14-127 '5'49' 16-428 I7-477 18-419 19-246 20-148 | zi-453 1 1 28 39 45 36 28 H 4 '9 9 5 o 53 '*/ 191 "I 226 202 200 1 5 8 '43 I2O 86 22 33 36 33 3 21 '4 12 '3 1 1 '3 12 160 163 63 151 129 104 102 85 84 Si 7* 3* 88-8 89-5 89-7 90-2 904 91-1 90-9 90-9 90-8 90-7 90-4 90-5 + 14-1 + '4'3 + '3'8 + 13-3 + 14-0 + '4'3 + '4' + 14-0 + 13-8 + 37 + '3'4 + '3'3 -81-0 -67-1 -53-5 -39'3 -26-6 - 7'9 + 4-3 + 18-0 + 3'3 +41-2 + 52-8 + 70-0 Nov. 14-127 17 15-491 13 16-428 36 '7'477 "9 18-419 4 73 122 173 9' 33 12 7 20 IO 2 5* 7* 94 49 18 74'4 74'4 74-0 73-5 80- 1 -17-6 -18-0 -18-2 19-0 - 16-2 -42-6 -24-6 -126 + 0-6 + 19-6 Means 10 57 75-28 17-80 ... Group 1797. A stream of small spots. Only one spot is teen on November 14. The group is not visible on November 15, but one spot is seen on November 16. Means ... ... K, 1 1 1 90-33 4-13-88 ... Group 1794. A very snull spot. ' 7^77 18-419 19-246 20*148 "'453 22-155 23-211 H"'53 *5 - '57 26-257 o 10 21 *7 5 7 o o o o >9 '3' 138 89 29 167 54 9 '5 O 9 '4 16 2 4 o 29 120 101 11 63 28 5 o IO 2-8 3-6 2-9 5'3 97 5'' 9'9 9-2 16 - 3-6 - 3'6 - 3'5 - 3'3 - *-9 - 37 - 3'4 - 4'o - 4' -70-1 -5-5-9 -466 32-3 N .. 1 1-126 | '*'M* 9 '3 6 5 o 7 3 140-9 141*6 12-0 -12-6 -'57 - 1-6 -108 - 6-1 + 12-8 + 4'3 +444 Means 3 5 141-25 12-30 Group 1795. 1 A very large spot, a, followed by a large spot, 6. A number of very small spott are still in the immediate neighbourhood of a and i, ei]>ecially on November 16 ami ic. b and nearly all the small spots have disappeared by November 21. Both n and 6 diminish in size after passing the central meridian on November 19. Means ... 5 48 5'57 - 3-56 - Group 1798. Thr. e small spots, of which the two preceding are measured together on November 19. One of this pair has disa|i|ared r 20, but a small spot has appeared near the following spot, and is measured with it. ' '3' |8 5 14-127 >5'49' 16-428 '7-477 18-419 19-246 63 "34 156 '5* 187 196 '*3 '95 59 2 948 1 161 '3'5 1287 no; 1*4 ,46 1 12 93 102 101 63 647 684 676 701 7" 664 569 5'"5 52-9 54-3 54'2 53'' 52-9 5*'9 4-IS'S + '57 + '5-4 + '5-' + 14-6 + 14-6 + '4-6 -77'o -64-1 -447 -32-4 19-8 - 7'6 + 3'4 Nov. 19-246 20-148 4 o 76 35 4 o 54 107-3 108-8 + 13"' 4-13-0 + 57-8 + 7'-* IIS 2 63 108-05 + ' : 286 AREAS AND HELIOGRAPHIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. Date. Greenwich Civil Time. Projected Area of Area for Group. Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Date. Greenwich Civil Time. Projected Area of Area for Group, Mean Longitude of Group. Mean Latitude of Group. Longitude from Central Meridian. Umbra. Whole Spot. Umbra. Whole Spot. Umbra. Wh le Umbra. Spot. Whole Spot. Group 1799. Three very small spots close together and measured as one. Group 1 804. Two small spots. 1885.4 Nov. 23-211 I 18 I 10 o 340-0 -11-4 -17-1 I88 5 . Dec. 9-126 3 22 2 17 o '95'4 o + 49-2 Means ... ... I IO 340-0 -11-4 Means 2 17 I95-4 -11-7 Group 1800. A small spot. Group 1805. A very small spot. Nov. 26-257 17 O 9 312-7 -12-6 - 4'5 Dec. 9-226 o 6 5 957 -I3-I -50-5 Means ... ... o 9 3127 -12-6 Means ... ... 5 957 -13-1 Group 1 80 1. Two small spots, a and b, on November z8. Only b remains on November 29. Group 1806. A large regular spot, a, with double nucleus. Small spots are seen near it on December 14-19. a, lias divided into two distinct spots by December 17. These are not measured separately until December 18, when they are lettered h and c. Nov. 28-162 29-142 12 4 38 '5 7 3 23 1 1 321-1 3197 -21-5 -21-5 + 29-1 +40-6 Means ... 5 17 320-40 21-50 Group 1802. Two very small spots, a and b. Dec. 10-470 1 1-406 12-193 13 -1-94 '4-I57 i5'47i 16-474 17-192 18-192 i9">39 20-164 21-279 4 2 5 3 4 2 48 49 53 49 32 38 22 4 5 2 148 2 33 37 291 280 2 75 268 183 '55 96 59 9 3 2 7 29 28 26 28 26 18 2 5 18 5 117 i77 205 213 172 148 144 i43 105 102 80 74 53-3 53-3 53-6 53' 2 53-i 537 53'5 53-9 53'3 52-9 53-3 52-4 + I 5 -6 + '5'5 + 15-5 + 15-6 + I5-5 + 15-3 + 15-2 + 5-4 + I5-5 + 14-6 + 14-5 + 14-4 -76-5 -64-1 -53-6 -40-8 -28-3 -10-3 + 27 + 12-6 +25-2 + 37-3 +51-1 +65-0 Nov. 28-162 29-142 i o H 12 i o 6 6 291-8 2 93'4 -12-7 -12-9 O'2 + '4'3 Means ... i 6 292-60 i I2'8o Group 1803. A number of very small spots on December 2. The preceding spot, a, increases in size on the following days. On December 3 the smaller spots follow it closely in a short stream. On December 4 a alone is seen. On December 5 three spots are seen close to a. Means ... ... 22 140 53-29 + 15-22 ... Group 1807. Two small spots, a and b. b has disappeared by December 13, and another small spot, c, has formed. Dec. 2-447 3-I83 4-554 5' 2 57 2 20 I 77 H7 5 68 2 18 3 54 125 95 232 277-9 2787 281-7 279-9 + 13-6 + 13-8 + H"4 + 14-8 + 4 2 '3 + 52-8 + 73-9 + 81-3 Dec. 12-193 I3-194 3 4 26 37 2 2 16 '9 77'9 797 -19-2 -17-8 9'3 -'4'3 Means ... 6 127 2 79'55 + H-15 Means ... ... 2 18 78-80 -18-50 ... TAKEN AT GREENWICH, IS I SIM A, AND IS MAURITIUS, IS Till YKAKS 1882 TO 1885. 287 Areas ani. ifj Longitude of Group. Mean latitude of Group. Longittido from ml Meridian. Date. Greenwich Civil Time. Projected Am of Am for Group. MM Longitude of Group. Mean latitude of Group. Longitnd* !' Central Meridian. Umbra. Whole Spot Umbra. Whole Bp : Umbra, wi .. Spot, Umbra. Whole Spot. liroup 1808. Two small faint |jt<, a and 6. Group 1811. Two small spot*, a and k. Only b is teen on December tj. mores rapidly forward in longitude. I8S-. '94 3 9 *5 2 '9 '3 S4* 55-8 - 8-0 - 8-3 O -39-4 -25-6 1885. Dec. 10-164 11-179 12*189 23-149 7 o o o 3 10 36 8 3 o o 16 '3 *7 9 25-1 *4'5 25-0 14-1 o - 4'* : - 47 -(-23-0 + 37'' + 49-6 + 61-4 ... ... , .6 55-20 - 8-15 Mi-ans ... ... 1 16 *473 - V58 ... Dec. 14-157 Group 1809. Two very small spots. Group 1813. A large regular spot, o. A very small spot is seen near it on December 14 and 15. Dec. 20-164 21-279 22-189 23-149 24-490 25-130 26-143 17-143 28-144 29-516 30-117 31-150 15 36 66 H 7* 68 5 *9 12 5 102 "5 299 190 35' 366 355 343 291 '47 '3 61 30 36 39 43 3 34 38 38 3' *5 12 9 211 Z 45 *3S 189 '94 96 189 '93 183 >*3 '*5 103 187-5 186-6 1877 1877 188-1 288-3 188-5 188-6 288-9 289-0 288-6 188-1 + 167 + 16-6 + 16-8 + 16-9 + 17-2 + 17-4 + 17-2 + 17-1 + 17-1 + '77 + '7'S + 17-1 -747 -60-8 -477 -ss* 16-9 - 8-4 + 5'' + 18-4 + 3''9 + 50-1 + 577 + 7<>7 8 7 23-9 - 3'5 -57'5 Means . . O 7 23-9 - 3'5 ... Group 1 8 10. Two very small spou on December 18. On December 19 and the succeeding days a ihort stream of spots, of which a and li, the first and last, are the largest, a move* forward rapidly in longitude. Only a and ft remain on December 12, and only a on December 23. M cans 3 182 188-15 + '7''3 Group 1813*. Two very small spots. Dec. 18-192 19-139 20-164 21-279 22-189 23-149 2 3<> 3' 9 '7 o ll '37 168 95 68 *3 I 16 18 6 '5 o 9 7' 95 S 5 62 37 27-8 26-5 287 19-8 32-4 34-8 -117 -11 ; 0-3 + 10-9 + 26-5 + 4*'4 + 57-Q + 72-0 10-9 10-9 MM Dec. 21-179 o 5 o 5 284-1 - 6-8 -63-3 Means ... ... o 5 184-1 - 6-8 Menus I ... 9 57 30-00 -11-23 Croup 1814. Two small spot" on December zi, one on December zz, three on DeremUr zj, two on December 15. None are seen on December 14, but there is a large group of :'. f in the place the spoU would occupy. (Croup i Si i. A small spot. Dec. 21-279 22-189 23-149 24-490 25-130 2 O *4 '7 50 30 o 1 1 o 13 1 1 4* 74 ill 162 '55 5'3 - 4'4 - 4'4 - 4'* -'3-8 + 13-8 + 4'8 + 5*7 + 78-6 Dec. 19*139 o 10 o 8 67-8 + 10 8 + 5*'* Means ... o 8 67-8 + 10-8 Means o 28 4'55 - 4-10 288 AREAS AND HELIOGUAPIIIC POSITIONS OF GROUPS OF SUN SPOTS DEDUCED FROM PHOTOGRAPHS Areas and Heliographic Positions of Groups of Sun Spots continued. Projected Area for Longitud. Date. Area of Group. Mean Menn , , , .. , from Projected Area for Longitude Date. Area of Group. Mean Mean CiviITime. Whnls Wlmlp of Group, of Group. Umbra. Whole Tj mbra Whole Meridian. Spot. Spot. CiviITime. Wlmln Wlmlp of Group, of Group. . Umbra. - Umbra. Meridian. Spot. Spot. Group 1815. A regular spot, a, followed by a short stream of small spots. The group diminishes in size from day to day, and all the small spots have disappeared by December 29. Group 1817. Three small spots on December 24. Of these only the first, a, is seen on December 25, but a is followed by two clusters of very small spots on that day. On December 26 only two spots aro een. On December 27 and 28 only one spot is seen. 1885.,, Dec. 23-149 5 53 12 115 246-3 16-2 76-5 24-490 24 135 23 133 246-2 16-2 58-9 25-130 42 214 34 176 245-3 -16-3 -51-4 26-143 29 220 19 144 244-6 17-1 38-8 27-143 23 146 13 84 245-6 16-8 24-6 28-144 i 2 in 6 5 8 2 47'3 -167 - 9-7 29-516 o 51 o 26 247-4 16-0 + 8-5 30-127 o 30 o 16 247-6 16-2 +16-7 1885. a Dec. 24-490 o 74 o 78 243-5 8'i 61-6 25-130 8 20 6 17 244-4 - 7-3 -52-3 26-143 12 40 7 25 246-3 7-2 37-1 27-143 0603 246-0 7-1 24-2 28-144 ' I 1 5 245-0 8'7 I2'O Means ... 3 26 245-04 7-68 Means ... 13 94 246-29 16-44 Group 1818. A very small spot. Group 1816. Two small spots, a and b. Dec. 24-490 o 31^ o 20 270-1 1-8 35'o 25-130 i 30 i 16 271-4 1-9 25-3 Dec. 25-130 0606 355'4 3'4 +58-7 Means I 18 270-75 1-85 Means ... o 6 355'4 3'4 HOVAL OBSEUVATOI.'Y. (JIJEENWICH. TOTAL PROJECTED ARE:AS OF SUN SPOTS AND FA'CUL^E FOR EACH DAY IN THE YEARS 187 5 4 1885. PnOTO-HlLIOGRAPHIC RB8DLT8, 1874-1885. 290 TOTAL PROJECTED AREAS OK SUN SPOTS AND FACUL^E FOR EACH DAY IN THE YEARS 1874-1877. TOTAL PROJECTED AREAS OF SUN SPOTS AND FACUL/E FOR EACH DAY FROM 1874 APRIL 17 TO 1877 DECEMBER 31 DEDUCED FROM THE MEASUREMENTS OF THE PHOTOGRAPHS OF THE SUN TAKEN AT THE ROYAL OBSERVATORY, GREENWICH, AT THE OBSERVATORY OF HARVARD COLLEGE, CAMBRIDGE, U.S.A., AND AT THE MELBOURNE OBSERVATORY, AUSTRALIA. The Projected Area is the Area as it is measured on the photograph, uncorrected for the effect of foreshortening, and expressed in millionths of the Sun's apparent disk. The Greenwich Civil Time is expressed by the month, day of the month (civil reckoning), and decimal of a day, reckoned from Greenwich Mean Midnight. The decimal of the day has not been given for days when neither spots nor faculse were observed on the photographs. The dates for which no photographic Eecord is at present available are indicated by the words " No photograph. As these are numerous in the present table, no attempt has been made to supply approximate numbers for them by interpolation from the days immediately before and after those for which photographs are lacking. Projected Areas. Projected Areas. Projected Areas. Projected Areas. Greenwich Greenwich Greenwich Greenwich Civil Time. Whole Civil Time. Whole Civil Time. Whole Civil Time. Whole Umbrae. Spots. Faculae. Umbrae. Spots. Faculs. Umbrae. Spots. Facuhc. Urn line. Spots. Fiiculae. 1874- " I8 74 . 1874. " 1874. " Apr. 17-5 208 o May 26^4 61 419 1869 July 4-4 288 2414 215 Aug. 12-4 326 2OOO 2144 1*5 O 117 o 27 No photo graph. 5 No photo graph. "3 No photo u r raph. 9 No photo graph. 28 No photograph. 6-5 66 1 3748 3886 H'5 428 2722 225 20 o o 29 No photograph. 7 - 5 511 3813 2242 '5'4 3/6 2605 265 21 o 30-5 87 502 8'5 55' 394 709 16 Xo photo graph. 22 o o 31 No photo graph. 9' 5 477 3177 379 17-5 336 1922 o 23 o o 10-5 286 21 10 o 18 No photo graph. 24 No photo graph. June i '5 18 468 o 1 1 No photo graph. 9'5 '57 1274 o 2 S No photo graph. 2'5 104 580 54 12 No photo graph. 20-6 205 1604 3353 26 No photo jraph. 3 No photo graph. J3'5 169 973 584 21-5 ,85 947 1124 27-6 o 150 o 4'5 86 468 o H'5 61 39 8 22-5 "3 715 316 28-6 53 285 o 5'5 23 361 o '5'4 236 829 '379 23 No photo graph. 29-7 53 306 o 6 Xo photo ^raph. 16-5 93 838 2166 2 4'5 98 616 5 2 7 30-6 72 4*5 o 7 Xo photo ;>raph. i7'5 164 1193 2 5'5 81 441 1569 8 18-5 231 1238 1084 26-4 97 446 1880 9 o '9 No photo graph. 27-5 58 324 2157 May i ' 5 62 467 10 Xo photo graph; 20-5 34 1570 4'55 28-4 33 2 74 2167 2-5 102 563 irj o 97 21-5 321 1317 2790 29-5 44 35 1446 3 No photo graph. 12-4 58 22 No photo graph. 3 No photo graph. 4-6 96 877 I3'4 38 243 23-5 '94 1299 101 I 3''5 133 o 5'5 85 748 o '4 No photo graph. 24-6 141 863 588 6-4 47 1028 o ,;-6 o 215 25'5 74 423 785 7-5 8-6 234 250 1729 2241 16 '7 Xo Xo photo photo graph, graph. 26 2 7 No Xo photo.graph. photojgraph. Sept. 1-5 2 '4 '5 '9 152 '73 57 2008 9'5 333 2204 it No photo graph. 28 No photo graph. 3 No photo graph. 10 No photo graph. '9'5 53 938 o 29 No photo graph. 4-6 2 4 222 1825 11-5 1 06 1276 667 20 No photo graph. 3'S 240 1452 1088 5'4 15 log 2884 12 No photo graph. 21 No photo graph. 3i '4 284 1565 708 6 No photo graph. 3 No photo graph. 22-6 89 899 o 7 Xo photo graph. '4 No photo graph. 23-5 7i 801 o 8 Xo photo graph. '5 No photo graph. 2 4'5 32 475 o Aug. i No photo graph. 9-6 1 1 176 247 16-4 47 38i o 2 5'5 3 2 361 1 60 1 2 No photo graph. 10-4 1 1 170 251 i7 No photo graph. 26 No photo graph. 3'4 368 '975 464 ii No photo graph. 18-4 o 89 o 27-6 54 5'4 o 4 Xo photo graph. 12-4 64 462 2IOI "9 No photo graph. 28 No photo graph. 5 Xo photo graph. '3 No photo graph. 2O'4 85 595 o 29-4 1 60 1353 o 6-4 304 1528 2403 4'5 16 63 6045 21-6 10 426 o 3'4 225 ! 974 600 7 No photo graph. I5-5 35 1 192 22-5 35 539 o 8-5 230 '3'7 2049 16 Xo photo graph. 23 No photo graph. July i Xo photo graph. 9 No photo graph. 17 No photo graph. 24 No photo graph. 2'5 H7 1205 3830 10-4 214 1247 4180 18 No photo graph. 2 5 No photo graph. 3'5 73 907 837 11-5 281 1796 3114 19-5 2 5 543 I'lto.iECTKD :n YEA us 1874 1K77 Total l'rojc< -'in Spots at; ProjVti \ taM, tan. On Greenwich Orcenwn-h r : . \Vhle , 1 -47. i 3 No photo grapli. '4 No photo graph. 14-6 46 3* o X photograph. 5 No photo graph. 15-6 46 34 o 353 2620 162; 6-5 10 70 142; 16-1 XI *54 o 4 iph. i photo graph. 17 photograph. 17-8 61 47 306 5'5 291 1921 2 No photo graph. 18 No photograph. 18-6 104 435 1027 6 photograph. 3 o '9 photo graph. 197 53 508 47* 7 8'5 "5 ph. 886 graph. 2008 4'4 5 o photo 316 graph. 20 21 No photo graph, photograph. XO'I 21-2 75 1 08 632 784 2700 2108 9 N . photo graph. 6 photograph. **'5 218 1023 2042 227 7* 620 333 10-4 117 715 9 6 3 7 '4 28 219 101 *3 photo graph. *3'4 *9* 1*87 500 ii N.I photograph. 8 photo graph. *4 No photo graph. 24-1 *5 1389 560 12 No photo -,'ttiph. 97 5 316 3*3 25-6 O 83 405 *5'4 1 86 909 8*7 '3'5 45 '73 O 10 No photo graph. 267 o 27 225 26-6 87 54' 4" 14 photo graph. 11-5 83 394 1001 27-6 o 793 *7'4 5 35' 485 '5'5 5* 241 709 i*7 ! 9* 823 i 296 28 o 28-5 48 35' 1483 16 photo graph. '3 No photo graph. 29 No photo graph. 297 75 573 1114 17 No photo graph. '4'5 84 527 o 30-6 o o "5* 307 "7 563 o 18 photo graph. '5 No photograph. 3>'S o o 1x04 31-8 120 567 *53 19-5 462 o 16 No photo graph. 20-5 82 383 o 17-6 22 302 o Apr. 1 6 17 5" 21 ph' ito graph. 8-5 154 o *'5 t 1 495 5<>7 22-6 72 373 2187 '9 No photograph. Feb. i -8 o 122 946 3 N . . photo graph. 23-5 4- 218 300 20 No photo uraph. i No photo graph. 4'6 99 902 24 No photo graph. 21 No photograph. 3 photo graph. 5'5 3' 35 25 No photo i;raph. 22 No photograph. 4'5 28 '47 177 6-4 4 98 3*8 26 o 23 No photograph. 57 21 **5 45 77 5 105 267 O o *4 No photo graph. 6-8 38 170 353 8-5 *7 o 28-5 o 4110 25 No photograph. 7'2 36 *5 4*8 9-1 22 o *9 3' No No o photo photo o graph, graph. 26 *7 28 No No No photograph, photograph, photo graph. 87 9'* 107 '3 *3 93 "9 40 697 883 987 10-6 12 5* No 393 photo I'll" to 980 graph, graph. 29 No photograph. I 1-2 5 47 1834 13-6 '74 1036 3*7 30 No photograph. 12 No photo graph. 45 204 '35 597 Nov. i N photo graph. 3' No photo grapli. '3 No photo graph. IV7 150 939 509 2 No photo graph. I 4 -0 9 333 165 219 963 848 36 126 687 o '5 o o o '7'5 102 868 1 162 4'5 164 896 1642 16 o o 18-5 130 634 7'5 ;; 167 899 798 1-1 o o '3' '9'4 69 446 688 6-6 118 856 c 18-4 4* 148 957 2O'6 54 3** 1398 7'5 168 997 344 '9 No photo graph. 21 7 **4 921 8 No photo graph. 20-1 '44 765 1450 227 55 658 9-6 212 1115 21'S 3*- '594 o 23-7 o 3*4 10 No photo graph. 22-5 321 1606 *4'5 33 "'5 12 289 o *3'5 *75 255 4* 20; 1079 12-4 o 93 1340 *4 photo graph. i<> ; 4 6 456 '3'5 37 ,58 -10 *5'5 365 ' 5*2 *7'5 I 56 1014 1 122 '4 No photo graph. 26-6 264 1463 28-5 *5 1258 1 102 i ; No photo graph. 27-0 242 1 5 166 29-6 267 '795 O 16-5 131 707 5>5 28'0 239 1231 1145 129 1411 O 292 TOTAL PROJECTED AREAS OF SUN SPOTS AND FACUL^E FOR EACH DAY IN THE YEARS 1874-1877. Total Projected Areas of Sun Spots and Faculse continued. Projected Areas. Projected Areas. Projected Areas. Projected Areas. Greenwich Greenwich Greenwich Greenwich Civil Time. Umbrae. Whole Spots. Faculae. Civil Time. Umbrae. Whole Spots. Faculae. Civil Time. Umbrae. Whole Spots. Faculaa. Civil Time. Umbra. Whole Spots. Faculae. I8 75 . 1 1875. * 1875. <> 1875. May i i 251 '573 337 June 28-6 30 216 402 Aug. 23-5 92 37 '347 Oct. 1 8-2 37 75' 2 No photo graph. 29-5 42 237 247 28 306 o "9 No photo graph. 3'5 215 1417 o 3'i 65 323 769 25-8 36 288 o 20 No photo graph. 4' 1 140 1083 o 26-6 35 205 o 21-4 o 43 8l 5'5 128 873 27-5 54 300 o 22 No photo graph. 6-5 97 433 28-6 39 200 23 No photo graph. 7-8 44 204 983 July i No photo graph. 29-5 60 233 24 No photo graph. 8 No photo graph. 2 "4 55 34 24 3'4 37 208 269 25^ 75 419 743 9'5 o o 372 3-6 29 179 '35 3I-4 15 97 1740 26-4 61 376 o 107 o o 364 4 No photo graph. 2 7 -I 97 621 1008 n-6 o o 420 5'4 22 66 o 28-1 109 624 180 12 o o 6-4 12 52 o 29^0 5 863 469 137 o 282 7 No photo graph. Sept. r; o 909 30 No photo graph. 14-6 o o ; 404 8-6 3' 598 2-8 o 908 31 No photo graph. I 5 -6 719 9-6 41 232 o 3 o 16 No photo graph. io'6 61 245 529 4 o o o 17-5 o 478 1 1 No photo graph. 5 No photo graph. 1 8-8 287 12-6 33 1 66 278 6 o 19-1 o 395 i3 - 6 12 132 401 7 o Nov. 1 7 "3 672 339 20-1 o o 223 i4 - 6 81 542 8 o o 2 '4 130 479 o 21-5 o 124 '5 No photo graph. 9"4 o 28 634 3-8 57 388 I 120 22'7 o '5 407 16-1 c 45 1 10 No photo graph. 4 No photo graph. 23 o o o 17-6 54 1151 1 1-7 o 59 5 No photo graph. 24-5 o 117 815 18-5 o H5 12 No photo graph. 6 o o 25 No photo graph. '9 o '3 o o 7 No photo graph. 26-6 o 44 20-7 o 542 '4 - 5 20 92 329 8'5 o o 231 27-6 9 48 80 21 o I5'5 5 98 521 9 No photo graph. *8-6 12 35 209 22-6 o o 625 16-4 58 865 10 o o o 29 No photo graph. 23-0 437 17-1 o 1 88 1 1 No photo graph. 3 No photo graph. 24-5 o 20 325 1 8-7 o 695 12 o o o 31-6 o o 317 25'4 o 39 485 '9 No photo graph. 13-0 o o 709 26-5 14 127 614 20 No photo graph. 4 No photograph. 27-6 o 114 o 21 o '5'4 o 7 440 .28-5 48 255 231 22 o 16 No photograph. 29-5 54 364 125 23 No photo graph. '7 No photograph. June i '5 3 80 o 30-6 5 324 o 24'6 o 609 18-4 76 307 39 6 2'5 45 275 1418 S''S 40 310 o 25-6 o 717 19-4 67 376 738 3-6 97 828 549 26 No photo graph. 20-5 148 615 o 4'5 '33 884 137 27-5 26 158 579 21 No photo graph. 5-6 189 1014 287 42 366 o 22-4 204 835 43 6 No photo graph. Aug. i No photo graph. 29-5 47 338 168 23'5 189 832 o 7 No photo graph. *'S 133 848 149 30-5 62 251 o 24 No photograph. 8-5 93 818 o 3'5 93 394 o 2 5 -6 133 7'5 H4 9 No photo graph. 4 No photo graph. 26-1 67 479 264 io'6 56 407 659 5'5 32 140 560 2 7 -I 40 383 '74 1 1 -6 12 46 No 242 photo 308 graph. 6 7 No No photo photo graph, graph. Oct. i-i 2 '4 S 2 148 426 o 224 28 2 9 -I No 39 photo 276 graph. 647 13 No photo graph. 8 No photo graph. 3 No photo graph. 30M 25 168 371 H7 459 9 o o 47 3 226 682 15 o 10-5 o o 1 86 5-6 36 183 485 16-5 38 295 253 n-6 444 6-4 '4 105 823 IT'S 161 1008 o 12 No photc graph. 7 '4 47 183 381 18 No photo graph. '3'5 o 696 87 o 5 414 Dec. i No photo graph. 19-5 242 '43 184 H o 9'4 o 34 83 2 No photo graph. 2O'6 182 980 o 1 5 No photr graph. 10-5 1 1 57 3 No photo graph. 21-7 96 677 997 16-4 o 221 1 1-4 o o 250 4 No photograph. 22-5 162 1027 o '7 o I2'I o o 896 5 No photo'graph. 23-5 35 1386 1003 18 '3 o o 6 No photo graph. 24'5 3'8 1425 333 *9 o H No photo graph. 7 No photograph. 25-6 257 1216 207 o 5 203 15 No photo graph. 8-1 o 44 26-5 132 884 o 21'5 36 217 213 16 No photc graph. 9 No photc graph. 27-5 88 510 672 22 -6 73 343 '493 '7 o o o 10 No photo!graph. TOTAL PKOJECTED ARKAS OP Sux SPOTS AND FACUL* FOB KAOII DAY IN THK YIAHS 1874-1877. 209 Total Projected Areas of Sun Spots ami Facula.' continued. ' QcMnwioh Projected Anu. Greenwich jected At Wkeh Bprta, .-. Faculc. Greenwich Ciril Time. Projected Are-. Greenwich Timr Projected Areo. Umbne. Whole Spot*. Umbra. Whole Spot*. i ,u Unbr*. Whole tad.. 187- 1876. J 1876. 1876. d ii photo graph. Jan. i o o O Mar. I-I 43 368 o Apr. 28 O O ., No photo .raph. 2 photo graph. 2-6 4 3* o *9 o o '3 photo graph. 3 photo graph 3 o o 30 No photo graph. 4-4 35 4 No photo graph 4'4 *73 5-1 '3 "4 '93 5'5 o *4 5 No photo graph 16 i 30 1 1 1 287 599 396 347 6 7 N photo photo graph graph 6-4 7'4 *4 8 3 319 985 May 1-4 2'C o Q o O *79 r i 18-0 84 674 1040 8 No photo graph 8-5 o 4" * > 1'C o o > ' 22O '9 photo graph. 9 No photo graph 9 '4 8 53 387 3 ) 4'C o o 2O'l 3' 47' 10 No photo graph 10-5 18 85 3*6 > c o o O : l-i 22-1 23-6 *4'5 *5 26 27 ;6 S 2 26 No No 379 3'4 299 "9 photo photo photo 229 '49 57 graph. grai'h- graph. i n 12-1 '4 5 16 '7 6 o o No N., 59 4* o photo photo photo photo *55 385 55 graph graph graph graph 12 13-6 14-6 5-6 16-4 '7'5 70 88 78 99 i*4 88 photo 278 3" *S7 387 57 graph 466 671 650 o o h 8-5 9'5 10-5 "'5 126 73 7' 57 5* 43 C2 150 I 8 265 *'3 206 191 347 39* o 305 445 54' 28 30-1 No No 3 photo photo 34 graph, graph. 210 18-5 19-5 207 43 '77 99 946 877 256 445 o 18-5 '97 20-5 109 '43 '4' 619 561 o 33* o '3'5 '4 i? 6 J 39 No o ,89 photo ii 292 -: iph. 218 3' No photo giuph. 217 9 2 814 716 21-1 78 548 1041 J 16-5 o o 597 22-5 104 737 o 22-J *75 958 1128 177 o > 36; *3'5 1 1 1 74 o 237 90 820 95' / / 18 o o o *4'5 203 93* *4'5 '77 9*5 847 10 o o o *5'5 '59 805 1036 163 849 54* * 7 2O'6 o o 208 267 302 o 26 No photo graph. arc o 175 27-5 27 i '/ o 27-1 53 560 o 9 22-q o o 5' 8 28-1 29-4 30 10 o No 60 o 66 376 photograph 287 29-6 30-S 9 S* '5 304 203 84 1330 37' '44 7 *3 *4 25-6 No No o photo photo 33 graph. graph. .63 3''5 12 43 346 3''5 '3 26-6 o 33 4*5 17-6 6 34 736 Feb. i No photo graph 28 *9 No o photo graph. *'S 3 9 45 photo graph Apr. i No photo grapL tl o o o o 4'5 2 12 o *'5 o 286 3 5 No photo graph 3'4 o '4' 6 photo graph 4'4 o 4 75 7 87 No photograph o 022; 67 o o 35 434 June i -4 2 No o photo 116 graph. . 9 No photograph 7'4 o 99 3-6 o 391 10*4 4 106 o g-r o *9 131 47 o 207 T T ii No photograph 9-6 o *4 3'9 5 No photo graph. 127 123 763 o 107 67 7*3 6 o o o 13-6 225 1029 "'5 o S' 59* 7 o o o 14-6 259 1209 *44 12-7 1 1 122 o 8 o o o 15-1 178 1181 167 213 1415 i- i 232 1388 189 o o 13-1 14-6 '5'5 12 22 '4 80 86 47 o 59 593 9 10 n o No No o photo photo o graph. graph. 1N 4 '94 944 66 16-5 16 368 12 o o 19-5 180 860 o 177 "5 *57 '3 o o o 20 No photo graph 1 8-6 38 o '4 O o 217 22 ^41 282 '9 No photo graph. 15 o 22 H 4 1 184 23 o o 533 o 20-5 2I'0 o 46, 361 16 7 photo o Sraph. 24-5 o o 212 22 e o ,S ; 313 T J 25 o o O 23-6 o 266 19-6 c O 34- 26-4 24 139 563 o *93 20-5 o o 298 27 No photo 28-6 32 121 grapli 368 1$ 26-0 o 308 *43 21 '4 22-6 o 29 8 26 ;- 29-6 17 153 o 2 7 o o 23-6 9 39 o 294 TOTAL PROJECTED AREAS OF SUN SPOTS AND FA FACUL^J FOII KA> it luv IN THE YIARS 1874-1877. Tuiul I'rojonti-.i ALMS of Sun Sputa ami Fucul.i- continued. Projected Area*. Projected ArcM. Projected Ar.. Projected Arew. Greenwich Greenwich Greenwich Greenwich Time. Urabrr. Whole Spot*. Civil Timr. 1'ini.i . Whol.- SpoU. Kacul*. Time. Umbnt. Whole Bpote Facul*. Time. Umbra. V, . , .-[, t 1877. ' 1877. d 1877. .Ian. i photo graph. M.ir. i-i 44 191 Apr. 28-1 O 60 122 June 24 photo graph. 2 3 O photo graph. 2 No 22' photo graph. 316 o 19 * 30-6 10 photo 58 graph. 580 26 46 '34 photo graph. 4 4 photo graph. *7'5 Ill o S" 1 18 336 O 28-5 16 49 95 61 7 photo graph. 6 7 photo photo trraph. graph. M:iv PI 2'l O 6 78 101 '45 *9'S 30 43 '*9 7*9 photograph. 8-0 O 30 8-6 60 1*4 21 79 T J O 9'' | " O* | o 5 8 ?*+ J T * 7 . . O 7 to- 1 '47 10-6 o 34 too 4'5 *3 '4 July i photograph. 1 12 i: i 130 '4 .5-6 44 a 196 302 photo 805 260 *S9 o graph. IOI2 1 1 12 '3 '4 5 No No o No photograph. photograph, photo graph. photograph. 5'4 54 6 No photo graph. 7-4 39 113 642 8-4 42 200 748 9'5 4' '4 435 lO'C 7O S n 2 3'4 4'4 5'4 6 .6 5 t photo 48 57 49 graph. 43 o o 16 No 17-1 161 |8'O 122 19-0 88 20'l 70 photograph. 9*4 974 1023 o 619 o 16 19-6 20 o IO 83 59 No o o 76 o 357 o 397 photograph. lu j fy II '6 74 12 No 13 No 14 . No I - -r *n -"* J 367 o photograph, photo graph, photo graph. 1 7O Q 7 o 8 9 10-4 o III photo o o k'raph. o 200 130 :, photograph. 21 "2 *5 236 298 1 5 5 39 1 /y u 1X2 O 12-5 o 184 22'l *3'5 H'5 Ii] 27-0 28 29-5 43 18 '3 o o 289 100 65 83 39 i- photo o "9 *'5 *73 282 o graph. '97 22-5 *3'5 H'S 11 27-6 28 2 9 18 o o No No o o o 61 131 o 381 o 555 photo graph. photograph. 335 O O 17-1 18-4 '9 20 21 22 H r / *9 No No No V, 4 * 1 T* 129 204 in 750 photograph, photo graph, photo graph, photograph, plioto graph. 1 C7 rt '3 14-1 '5 16 '7 ,8-5 '9 to-j o 10 No 10 No o o 49 photo graph, photograph. of o 16 258 photograph, o 326 3'5 9 104. 30 o o O 5 33 1 57 21-5 *44 31 i 7 '5 j o 3''4 o o 264 *5 - 5 26-4 45 3' '43 '57 o 554 22 4 photo Q o No photo graph. *3 o O o 2 2 8- + o O 246 2C o o Feb. i 2-1 3-6 5 photo *5 3* giaph. o o Apr. i 2 No No photo photo graph, graph. 29-4 3' o o o o o 107 J 26 28 o No photo photo o graph, graph. 4 No photo graph. 3 No photo graph. *9 o o 5 No photo graph. 4-6 535 30-4 49 6-1 1 1 o 5-6 o o 219 J une i No photo Bgraph. 3''4 o 1 IO 7'5 *5 116 o 6-5 3 *S 81 2 No photo graph. 8-5 9 No '94 photograph. 7'5 8 2 28 No photo .graph. 3'5 4'4 n 5 36 301 293 '*S Aug. i No photo graph. lO'l 36 218 ~ 232 9 O 5'4 70 334 o *'5 3 74 o 1 1 No photograph. 10 No photo .Til' 54 277 o 3'5 o *4 128 12 photograph. II O O 7'4 7 281 4 o o '3 '4 No No photograph, photo graph. 12-4 o o 13 o o 36 o 8-5 9'4 7' 90 307 44 6 photo photo graph- graph. No *9 photograph. 127 30; '4 '5 No photo o graph. 10 11-5 43 photograph. 239 416 7 8 o No o photo o graph. '7-5 18 19*6 20 No 89 132 photograph, o 174 16 i 18 87 685 in 634 photo o 177 x-raph. 12 '3 '44 o No o o photo o ..Tiiph. 555 9 10 1 1 o o photo photo o graph, graph. 20 21 o O >9'5 53 36 278 187 310 6 9 7 i' 4 16-4 o o 320 279 12 '3 photo o graph. 22 *3 No photograph. 21 **l No photo photo graph, graph. 18 o o o o 14-5 '5 o o photo '43 graph. *4 O 2 3'4 82 37* o '9 o o 10 O o *5 No photograph. *4'4 63 202 20 o o o '7 o o o 26-0 5 187 25-4 67 21 3 21 o o o IB o o o 40 t 146 656 y ~ 26 photo graph. 22 o o 9 photo graph. 28 No photo graph. 27-6 25 '34 355 *3 No photograph. to o o o 296 TOTAL PROJECTED AREAS OF SUN SPOTS AND FACUL^E FOR EACH DAY IN THE YEARS 1874-1877. Total Projected Areas of Sun Spots and Faculse continued. Projected Areas. Projected Areas. Projected Areas. Projected Areas. Greenwich Greenwich Greenwich Greenwich Civil Time. Umbrae. Whole Spots. Faculse. Civil Time. Umbrae. Whole Spots. Faculae Civil Tinip. Umbra. Whole Spots. Faculffi. Civil Time. Umbrse. Whole Spots. Faculav 1877. - I8 77 . 1 1877. " 1877. ' Aug. 2 1 O Sept. 2 3 No photo graph. Oct. 26-1 '5 215 O Nov. 28-5 142 669 22'5 8 3 2 94 24-4 o 265 27 No photo graph. 29-1 85 631 o 23-5 22 104 458 25-1 20 336 28 No photo graph. 30-4 120 459 o H'4 32 246 744 26-6 18 75 271 2 9 No photo jraph. 25 No photo graph. 27-5 10 4i 472 3'5 280 1265 654 26 No photo graph. 28-4 9 53 o 3' - 4 281 1482 o Dec. i No photo graph. 27 No photo graph. 29-5 5 16 276 2 '5 58 233 568 28-5 3 82 3 No photo graph. 3'i 30 206 507 29-6 22 59 61 4 No photo graph. 3 No photo graph. Nov. i -4 272 1772 608 5 3i-4 7 3i o 2'I 207 1620 189 6 o o Oct. 1-4 5 H 133 3'5 237 1092 7 o o 2 O o 4'5 152 842 8 o 3 o 5 '4 107 583 383 9 No photo graph. Sept.. 1-5 o o 880 4 No photo graph. 6 No photo graph. 10 o o 2 No photo graph. 5'4 o 261 7-1 37 246 99 1 1 1 o o o 3 No photo graph. 6-4 o 276 8-4 o 307 12 o 4'5 '9 87 216 7 No photo graph. 9 No photo graph. 13 o o 5-5 52 246 337 8 o o o io - 4 o 227 H o 6-4 75 300 221 9 o o o 1 1 JSo photo graph. 15 No photo graph. 7 '4 '77 445 O 10 No photo graph. 12-4 o 128 16 No photo graph. 8 No photo graph. 1 1 o o o '3 No photo graph. 17 o o 9'5 72 3i6 o 12 o o o H-S 62 1 80 18 o 10 No photo graph. 13 No photo graph. 15 No photo ^raph. ! 9 No photo graph. 1 1 No photo graph. H No photo graph. 16-5 3i i'3 20 No photo graph. 12-4 65 202 260 15 o o o 17-6 2 9 52 SI'l o 34 171 13 No photo graph. 16 o o o 18 No photo graph. 22 No photo graph. '4 No photo graph. '7'4 o o 97 '9 No photo graph. 23 No photo graph. 15 No photo graph. 18 o o o 20 o o o 24 No photo graph. 16 No photo graph. '9 No photo graph. 2 I No photo graph. 25 No photo graph. 17 No photo graph. 20 o o o 22- 5 35 123 338 26 o o 18-5 2 45 333 21 No photo graph. 23H 62 306 475 27 No photo graph. . '9 No photo graph. 22 No photo graph. 24-1 53 59 190 28 o o 20'I o 24 o 23 o o o 25-2 73 753 o 2 9 No photo graph. 2I"5 2 22 214 24-4 o o 171 26-6 168 828 o 3 No photo graph. 22 O O o 25 No photo graph. 27-2 94 759 o 3 ''5 o 23 246 AREAS OF Rt is TUB YEARS 1878- (TOTAL i . i, i.goucED FROM THE MKV>I I;KMK < TIIK Sux TAKES AT TII > AT HKIIKA HUN IN ISI'IA, AT 2KVATOKY, AUSTRALIA, AM' AT THE KoYAL Al.KKKK (' ..iRV. MAURITIUS. The Projected An>: i- the Area as it is measured on the Photograph, uncorrected for the effect of foretihorteiiiiig, and expressed in millionth.- of the Mm'.- apparent ilisk. % The (Jreonwirh ( 'ivilTimc is expressed by the month, day of the raonih (civil reckoning), and decimal of a day, reckoned from Oreenwirh " decimal of the day has not been given for days when neither spots nor faculo) were observed on thu photographs. s for which the areas are given in brackets indicate days for which no photographic Record is at present available; in theae ea*' :n have U-eii obtained by ititorpolation from thr iin-istires of photographs taken on the days immediately preceding and following tli .1 iv for which the photograph is lacking. These interpolated values have been used in taking the mean daily areas for each rotation ami for each yi ar, given in the last section of this volume Projrcted Arena. Projected Areas. Projected Are*. Projected Aim. Greenwich Greenwich Greenwich Greenwich Civil Tim*. Umbr*. Whole Kiculse. Ciril Time. Umbra. Whole Spot-. FtCtllK. Ciril Time. fmbrr. Whole S;. : Fictile Civil Tim*. Umbr*. Whole >p :. F.cula. i 1878. - 1 1878. " 1878. d 1878. d .1 in. I O O Feb. 10 Mar. 22 o Mi.y l O 2 O O 1 1 O O o *3 o 2 ( o) 3 o 12 *4 O O o 3 ( o O o) 4 O o o '3 O o *5 o 4 o o o o 4'3 o o 282 26 o o o 5 o o o 6 ( o o 74) '5 o o o *7 o 6 o o o o o 347 16 o o 28 o o o 7 o o 8 o 17 o o 29-3 o o 3*8 o o 9 o 18 o 30 o o o 9 o o o 10-5 63 '9 o o 3' (o o) 10-5 o "5 1 1 o 20 o o o 1 1 o 1 2 : 21 o 12 o o 13 o 22 o Apr. i "3 '4 ( o ) *3 o o o 2 O o 14 o o 5 ( o o 0) *4 o o o 3'3 o 146 '5 o o 16 o o o *5 o o 4 o o o 16 o '7'5 O 700 26 o 7 o 5-2 o 18 395 7 o 18 o o 27-2 o 7 ,65 6 o o o ll o 19 o o o 28 o o 7 o o 9 o 20 o o 8 o 20 o 21 o o 9 o o 21 o o 22 o o Mar. i o o 10 o 22 o o 2 3 6 87 Z 39 o 2 o o 11 o o o *3 o o *4 (65 210 ) 3 o o IX *4 o o o *5 i 43 180 o 4'5 62 *57 409 '3 o *5 o o 26 i o 136 o 5 '4 28 >*5 1026 4'3 o o 130 26 (35 "44 43) 2" ( o 9' o) 6-1 3 5 >S o 27-5 69 288 So6 28 ( o 45 o) 7 o 16 o 28-1 54 44* 702 Z 9 o 8-4 o o 588 '7 o o 291 too 636 944 30 o 9'* o *47 18 o o o 30-1 83 491 62 3' o o o 10 o 19 o o o 3''4 120 55* 461 11-3 3 18 20 o 12 5 69 308 o 21 o o Feb. i o o o '3'3 43 369 o 2Z June IM I0 5 489 o 2 '4'5 5' *5* o 23 o o *'3 4* 338 3'* *4 18* '5'3 9' 54 o *4 o o o 3-3 45 'I 7 o 4 (3<> 207 o) 16-2 5 347 *5 o o 4'4 12 67 684 p 36 231 o 17 (35 "7 o) 16 o 5 O 10 1845 6 (24 170 74) 111 20 106 o *7 o o 6-5 o 12 282 (i* 1 10 347) 19 -i o o 347 28 o o o - o o o 8-5 o 49 5*' to o o o 2 9 o o 1 o o o 9 o 21 o o o 30 o o o 9 o o o PHOTO HELIOGRAPHIC RESULTS. 1874-1885. 2 P 298 TOTAL PROJECTED AREAS OF SUN SPOTS AND FACUKE FOR EACH DAY IN THE YEARS 1878-1881. Total Projected Areas of Sun Spots and Faculse continued. Projected Areas. Projected Areas. Projected Areas. Projected Areas. Greenwich Greenwich Greenwich Greenwich Civil Time. Umbne. Whole Spots. Faculae. Civil Time. Umbrae. Whole Spots. Faculae. Civil Time. Umbrae. Whole Spots. Faculae. Civil Time. Umbrae. Whole Spots. Faculae. 1878. d 1878. d 1878. d 1878. ' June 10-5 O '9 Aug. 7-5 o 97 Oct. 3 o 1 >PC. I O o o 1 1 O o 8 o o o 4 o o o 2 o 12-5 O 102 9 o o 5 o o 3 o '3 O o 10 o o 6 o 4 o o o 4 O o 1 1 o o o 7 o o 5 o o o 15 O o 12 o 8-5 o o 60 6 o 16 o 13 o o 9 o 7 o o i? o 14 o o IO 8 o o 18 O o 15 o o 1 1 o o 9 o o '9 o o 16-5 o 75 12'2 o 169 10 O o o 20 O 17 o o i3'3 o 180 II o 21-4 o 236 18 ( ) '4 o o 12 o o 22-4 o 535 9 o o 15 o o '3 o o 2 3 o 20 (o o) 16 o o '4 o o 2 4 o 21 o o '7 o 15 o o 2 5 o 22 o o o 18 o 16-3 o 54 26-5 17 80 103 2 3 o '9'5 289 17-2 4 2 27-5 41 188 369 2 4 o o o 20 o o 18 o o 28-5 39 194 271 2 5 o o 21-5 322 19-4 5 28 *33 29-5 3 38 40 26 o o 22 o 20'2 . 4 II IO2 30 O 27 o o o 2 3 21 o 28 o 2 4 o 22 o 29 o 2 5 o 23 o o July i O o 3 o o o 26 o o o 24 o o o 2 o 3i o o 27 o o o 2 5 o o o 3 O 28 o 26 o o o 4 o 29-3 8 66 231 2 7 o o 6 7 O O ( o o o o 0) Sept. i 2-6 o II 64 o 58 30-2 31-2 13 24 94 146 368 222 28 29 3 o o o o o o o o 8 O o 3'5 27 119 2 57 31 o o o 9 O 4 - 4 38 2OI 279 10 ii 12 O O O o o o 5' 2 6-5 7'4 37 71 64 233 259 287 o o Nov. 1-5 2 '3 3'3 33 26 26 158 149 140 53 13 H 15 ,6-5 '7'5 18 O (o O o o o o o o o o ) 449 7' 8'3 9-6 io-6 11-5 12-4 13-5 7 5 2 55 44 36 18 354 265 249 210 144 64 85 33 2 775 445 4-2 5'5 6-3 7'5 8-3 Q'2 18 3 1 21 26 16 q 128 o 130 o 109 o 91 o 69 291 23 228 '9 o o o H'S o 117 7 10 7 O 20 o '5 o 1 1 O 16 o o o 21 o o 12 o 17 o o o 22 c / I ? o 1 8 o o o J 2 3 o o 14 19 o o o 2 4 o o 15 o 2 5 o o 20 o o o l6'5 o o 1 06 26-4 5 18 272 21 o o Q J '7 ' 27-5 35 2 2 o o 18 o 28 o 23 o O 19-5 o o 113 29 o o 24 o o o 20-3 3 20 70 30 3' o o o o o 2 5 26 o o o o o 21-3 22'2 2 16 93 23 146 27 o o o / Q 2 3 20 o o o 24 o o Aug. i 29-2 o 65 25 o 2 o o 30-5 213 26 o 3 o o o 2 7 o 4 o o o 28 o O 5 o o Oct. i -4 o 477 29-5 217 6-5 o 79 2 o o ! o 3 o TOTAL PROJECTED AREAS or SON SPOTS AND FACUI^B FOK KACH DAY IN TIIK VEAKS 1878-1881. Ti'tul 1'nijcctfil Areas of Sun Spots and Fumlit continued. Greenwich Ciril Time. Projected An-i. Greenwich I'iril Projected An**. Greenwich fivil Time. Projected Arau. ftrwnwirh Tim*. !' ' ! 1 \ r t U^ Whol* . Spot-. r ' cul - Umbrae. Whole Spot*. K.CU,.. I'm'. . Whol. Spot*. Frul. I'.. | . Whol. Frnl. 1871, 1879. ' 1879. ' 1879. * Jan. i O Mar. i O o o Apr. 28 o June 25 O 2 O 2 o o 29 O o o 26 (28 71 ) 3 O 3 o o 30 o 27-4 55 '4 2 4 O 4 o 28-5 65 232 o s o c 5 o *9 (61 271 o) 6 6 o May i o o 30-5 5^ 3<>9 o 7 7 o o o 2 o 8 8 o o 3 o 9 o O 9 O 4 o o o July i i 61 464 o 10 10 o 5 o 2-4 44 204 487 1 1 o o 1 1 o 6 o o o 3'' 49 .246 1584 12 (o o o) 12-3 o o So 7 o o 4'5 7 94 841 13 ! o O 13 8 ( 56 1021) 5 '4 6 51 1260 '4 o O 142 o o 161 9"' o 1 1 1 2042 6 (3 . 26 707) '5 o O 15 o 10-4 25 80 57* 7'5 o o "54 16 O 10-2 o o 136 1 1 (10 55 *86) 8 o o o 17 o O 17-2 o o 167 12-5 7 30 o 9 o o ll O 18 o o o 13 "o o 10 o o 19-3 o o 147 19-1 o 88 '4 o n-S 3' 178 487 20-2 o 259 20 o o o o 12-4 45 410 o 212 o 584 21 o o 16 o 13 (35 319 ) 22'2 o 105 22 o o '7 '4 o o 375 4'4 4 "7 o *3 o gj o o o ll o 15-1 4 222 o 2 4 o 4 o o "9'5 o o 150 ,6-4 8 97 o *5'3 o 386 20 (o o 75) 7 (4 49 67) 26 o 26-3 o o 21 18-4 o "33 o o o 27-2 o o 268 22 o o '9 (o 89) 28 o 28 23 o 20 ( 44) 29 o . *9 o O H o 21 o 30-3 6 43 199 30 o o o o o 22 o 31-3 o 8 4'9 3' o o o 26 o o o 23 o o *7 o o o *4 o o o 28 o o o 25 o o *9 o o 26 o o Feb. 1-3 o o 246 o *7 ( ) 2'2 o o 265 Apr. i o o o 3' (o o o) 28 o 3'* o o 35 2 o o 9 o o 4 o o 3 o o o 3'4 o 169 5 o o 4 o o o June i o 3' O 6-2 21 1 5 o o o 2 o 7 o o 6 o o 3 o 8 o 7'5 o 186 4 o o Aug. i o o 9 o o 8-5 o o 203 5 ( o o) 2 "4 o 60 10 o 9 o o 6 o o o 3 (o o 30) 1 1 o 10 o o 7 o o 4 o 12-5 178 II o 8 ( 94) 5 o '3 o o o 12 (16 80 0) 9'5 o o 183 6 '4 o '3 (3* 1 60 o) 10 o 7 o o '5 (o o o) '4 (48 240 1 1 o o 8 o o o 16 '7 (o 156 64 16-1 58 320 4'3 o o 12 3 o o o o 9 10 o (4 o 49 o ll 9 20 o o o 17-6 64 18-5 62 '95 4 6 276 323 215 5*5 136 '4'5 16 o 9 45) 11-4 12-5 '34 8 ii 59 97 222 '5* 35 333 138 21 20'I 36 204 o '7 o 14 o o o IS '4 o o o o o 2l'l 29 22 I 29 23-1 o 76 1 66 104 844 1430 624 ll '9 20 o o o o o ll 17 o (o o o o o) 25 o o 24 (o 5* 312) 21 o o ll o o o 26 o o o 2C 22 o '9 o o ) 2 7 26 o o 2 3 o o 20 o o o 28 o o 1 o 27 o o 24 o o 21 o o o 300 TOTAL PROJECTED AREAS OF SUN SPOTS AND FACUL^E FOR EACH DAY IN THE YEARS 1878-1881. Total Projected Areas of Sun Spots and Faculse continued. Projected Areas. Projected Areas. Projected Areas. Projected Areas. Greenwich Greenwich Greenwich Greenwich Civil Time. Umbra. Whole Spots. Faculre. Civil Time. Umbrae. Whole Spots. Faculse. CiTil Time. Umbra. Whole Spots. Faculse. Civil Time. Umbra. Whole Spots. Faculsp. \ 1879. <> 1879. 1879. " 1880. '' Aug. 22 o O o Oct. 19-2 7 609 554 Dec. 16-5 1 1 33 3198 Jan. i o 23 ( O o) 20-4 126 5'9 306 17-4 47 242 322 2 o *4 (o o ) 2i'5 48 266 233 18-3 5 258 241 3'5 25 79 55 25 o o o 22 (*4 '33 "7) 19-4 60 270 356 4' 2 33 161 1242 26 o o 23 o 2O'2 36 294 I 12 5-2 "3 506 l53 27 (27 137 939) 24 o o 2 I '2 48 297 105 6-3 9' 544 o 28-1 53 273 1878 25^ o o 75 22 (32 198 7 0) 7'2 128 836 509 29 (57 291 1073) 26 o o c 23 (16 99 35) 8 (127 762 255) 3'5 61 308 267 27 o o 2 4 o 9' 1 125 687 o 31-2 24 224 o 28 o o 25 (o o) 10-3 139 769 861 2 9 o o 26 o o o "'3 109 603 1159 3 o o 27 o o o 12-5 '47 569 1162 Sept. 1-5 74 3'3 o 3i o o 28 o o '33 73 54 6 332 2'5 54 277 o 2 9 o o o '4'3 '47 824 943 3'5 51 289 3 o 15-2 1 60 792 912 4'4 5 245 o Nov. i o o o 3' o o o ,6-3 203 900 1315 5'2 M H5 o 2 o o '7'S 121 539 1197 6 (21 1 06 '73) 3 o o 18 (81 337 677) 7'2 18 96 346 4 ( o 34) 19-4 40 134 156 8-4 O o 465 5 ( 68) 2O'2 10 81 892 9 O o o 6-4 102 21'2 o 26 35' 10 o o o 7'5 99 438 796 22 o o ii o o 8-2 74 497 667 23 o o 12 ( o o o) 9-2 58 470 980 24'3 o 7 360 13 o o o . 10-2 62 486 O 25-2 o 657 '4 o o 1 I '2 49 568 o 26-5 20 1272 '5 o o 12-6 152 487 '31 27-6 o 406 16 o '3-5 9 388 28 o o 17 o o H'5 44 261 231 29 (31 '45 269) 18 o o I5-5 27 163 o 3'5 62 289 538 '9 o o 16-2 17 78 39 3'4 IOO 572 1097 20 o 17-2 16 66 799 21 o o 18-5 12 298 22 o 19-5 o 172 Feb. T2 2 i 6 940 2125 23 o o 20 ( o 86) 2'5 163 782 914 24-4 17 73 368 21 o o 3-3 168 1 100 94 25 -6 17 54 54' 22 o 4-5 239 1005 1035 26-6 29 66 252 2 3 o o S'S 249 1073 1354 27-5 13 3 620 24 o 6-2 248 1105 1365 2g ( 9 26 4'4) 2 5 -6 3 14 '74 7-2 234 1114 1688 2 9 ( 4 '3 207) 26 o o o 8 (224 1137 1325) 30 o 27 (II 37 158) 9-4 214 1159 962 28-S 21 74 3,6 io'i 138 778 1645 29-2 O 104 II-2 133 792 439 Oct. i ('4 42 "5) 3 (8 102 o] 12-5 68 342 1 140 2-6 28 85 229 13-4 20 155 1304 3-4 28 103 o 14-1 o o 2787 4-6 o 74' Dec. 1-2 16 IOO o Ij'2 O O 652 5 o 2-6 42 '95 o i6~i o o '473 6'5 o 35 3'5 '9 I2O 89 17 oo o 7'5 6 34 210 4'5 4 2O o i8 - 6 o o 199 8-1 o 5' 1332 5 o O o 19 ooo 9 (32 I2O 666) 6'5 o 1325 20 o o o 10-6 63 1 88 7 o o o 21-4 ii 33 124 11-5 161 o 8 o o o 22'2 28 182 702 12 ( 3 141 317) 9 o o o 2 3'3 55 3'7 '545 13 ( 6 121 634) 10 o 2 4'3 5 2 261 927 14-4 8 101 951 1 1 o o o *5'5 : 55 308 'S'S H 66 o 12 o 26-5 55 308 16-5 o 34 256 '3 o o 27-4 56 262 492 17-2 o 34 o '4 o 28-2 99 280 6/3 18-5 163 666 780 '5 o o 29-2 : 88 258 '474 TOTAL PROJECTED ARKAS o> s g >OUL,K K.\rn l'\v THE YKARS 1878-1881. Total Projected ATOW <>f ninl Kaculu- r 1550 o '35 126 336 263 9* '9 '59 478 6-1 229 1151) 1579 3'3 4*9 2054 *S5' 142 63 *7' 1057 10-5 55 *34 806 7-1 33 1260 403 4'3 182 96; 8,4 15-3 '9 "5 1212 I I '2 4* 126 626 8-2 3*7 '37* 4 6 ' 5'2 129 55 16-5 12 108 124 30 104 9-6 35 '434 1239 6-3 62 290 859 17-4 o O 220 '3 ('5 5* 3'S) 10-4 403 1634 1760 61 305 1818 18 o O 14-1 o o 630 "'5 *57 1676 '073 8-6 1x8 1851 19-4 o 326 15-2 3* 1 12 289 12-5 426 1851 2540 9'3 5' 178 o 20-5 o 927 16-2 6 7 '44 13-5 381 612 1360 103 5' 222 S 2 ' 21 4 o 44' 17-3 100 45' 842 '4 (336 i 589 906) "'5 8 .00 1496 22 I o 7'7 18-5 ,85 809 2004 '5 (290 1566 453) 12-4 21 176 *3'5 o 487 '95 345 1382 2 '5S 16-1 *45 '543 ,3-6 44 285 16^6 *4 o o 20-3 3*9 '37i 4*5 ,7-6 1040 948 14-2 93 435 2'54 *5'3 S3 388 9*3 21-5 402 1706 '49' 18-2 276 1258 821 37* 1262 26-3 '4* 634 '534 X2'2 347 '53' '9'5 *3* 328 1301 162 9' 783 27-6 '70 994 45/8 23-5 485 2073 20'X *54 1261 9'5 '73 94 430 333 302 TOTAL PROJECTED AREAS OF SUN SPOTS AND FACULTE FOR EACH DAY IN THE YEARS 1878-1881. Total Projected Areas of Sun Spots and Faculae continued. Projected Areas. Projected Areas. Projected Areas. Projected Areas. Greenwich Greenwich Greenwich Greenwich Civil Time. Umbra. Whole Spots. Faculse. Civil Time. Umbra. Whole Spots. Faculip. Civil Time. Umbrre. Whole Spots. Fa<.-ul;e. Civil Time. (Jmbne. Whole SpO'8. Facula. 1880. d l88o. d 1881. '! 1881. d Oct. 1 8-6 83 398 832 Dec. 1 5 (46 1 80 1404) Jan. i '5 164 594 Mar. 1-3 22 5 6 1569 19-3 230 824 l6 7 16-2 '9 55 ' '49 6 2 (219 889 1454) 2 ('9 49 2298) 20 (282 1215 493) I7-3 46 161 1616 3-2 274 1184 2907 3'3 16 4' 3026 21-3 334 1606 819 18-3 59 172 698 4 '2 242 1 140 4131 4'2 24 59 2272 22-3 302 1325 228 19-2 62 248 o 5'5 153 663 1499 5'3 47 'H '554 23-2 323 ,56, 1864 2O'2 63 295 6-4 162 814 1394 6-2 32 126 o 24-3 293 1269 1405 21'4 105 329 508 7'5 104 768 295 7'5 '4 56 1623 25-4 '53 695 927 22'3 105 400 124; 8 (117 639 148) 8-4 12 126 1503 26-3 82 315 223 23-4 117 544 74 9-1 130 509 o 9'3 46 467 3816 27-3 no 43' 63 24-4 181 712 1018 10-2 174 467 10-3 321 1 126 5181 28-3 72 242 o 25 (128 555 59) II'3 102 364 11-5 254 1286 22O2 29-3 62 204 228 26-2 74 398 o i2'3 55 1 88 1241 12-4 45' 1421 2372 30'6 o 4' 1170 27'3 172 911 1728 i3'3 4 '93 1535 13-2 494 21 10 2OO7 31-3 41 87 1785 28-3 1 06 481 728 14-3 21 9 1 519 '4-5 39 6 2338 2286 29-2 '5' 589 15-3 o 156 15-5 467 2416 4402 3'3 "57 774 4 6 3 16 o ,6-4 486 2364 3374 Nov. 1-3 78 3'7 9'5 31-6 270 1086 o 17-3 130 613 o 17-5 399 1780 1809 2-5 69 463 1684 18-3 41 782 o 18-5 295 1556 2245 3'5 62 283 1179 19-4 1,2 1 107 1579 19-5 262 1401 '779 4-6 52 175 1390 20-3 '55 1021 851 20-2 425 '939 971 5'3 45 144 3'4 21-5 114 468 753 21'3 387 1914 3486 6 o o 22'2 24 242 338 22-6 45 2OO2 2666 7 o o 23-2 12 149 2230 23-2 35 1568 3241 8-4 o 15 847 24'3 114 59 '384 24-3 278 "54 4522 9 '4 3 35 1527 25'2 208 1005 94 25-4 ' 136 730 '52' 10 o o 26-3 439 1362 184 26-1 32 : 318 712 ii o o 27-2 419 1342 27-3 32 80 o 12 o o 28-2 384 1292 '959 28-5 16 66 1046 I3-3 17 71 546 29-2 561 1869 4738 29-5 31 152 '947 H'3 103 33 846 30-2 786 2490 4986 30-4 9 158 1 107 I 5 -3 291 934 516 3'-5 328 1845 1266 31-5 64 297 403 l6'4 126 775 223 I7-3 224 819 o 18-1 70 885 o | 19-5 188 [210 879 Feb. 1-3 387 1378 '473 20'6 *'3 I 150 1374 2 (363 1378 3436) Apr. 1-4 98 l l l 753 21 (.64 774 1466) 3'3 339 1378 5399 2'5 132 698 1520 22'4 '15 39 s 1558 4'3 320 '433 2311 3'3 '39 548 2086 23-3 47 142 912 5'5 233 1108 o 4-6 150 675 2854 24-3 158 697 '349 6-2 253 1123 1876 5'3 140 524 4308 25-5 273 1540 1332 7'3 59 1624 2956 6-5 68 374 2096 26-2 398 2076 '5'5 8-3 335 1520 2442 7'4 33 250 1567 2 7 -6 3'5 2IOI 1071 9'4 230 1117 3'53 8'5 64 321 '33 28' 3 5*4 2154 374 10-5 169 883 9'5 100 509 1414 29-4 444 1868 453 i ri 267 857 I0'2 64 39 o 30-5 236 '347 481 12-5 152 636 1 169 "'3 74 333 o 13-1 '53 562 12-2 92 464 2775 14-3 138 5/0 3210 >3'4 '3' 54' 1492 Dec. rz 201 1232 '5'3 192 592 1300 14-2 160 645 3658 2 (J77 1051 370 16-4 182 682 5515 15-2 183 823 1489 3-2 152 870 742 '7 - 3 201 780 8219 16-2 169 901 904 4'3 173 III7 2714 18-3 26l 868 55" 17-2 225 872 534 5 (204 II5I 1948) '9'3 185 833 201 I 18-5 167 781 2920 6-2 234 IlS; 1182 20-3 199 843 1381 19-2 268 97' 4660 7-2 279 1463 1423 21-4 344 I2 39 1674 20-3 406 1518 3362 8 (223 I3OO 983) 22'I 107 983 O 21'2 3'5 1382 9'3 1 66 1136 543 23-2 308 1031 O 22'2 308 1398 10-5 "55 926 2082 2 4'3 215 834 2093 23-4 280 1261 1616 11-5 182 807 1128 2 5'4 182 6.3 5814 24 (214 "54 1669) 12-3 I 10 566 476 26-s 85 275 1288 25-3 '47 1047 1721 '3'3 99 430 I22O 27-1 84 259 5362 26-6 163 928 1790 '4 (72 35 1312) 28-2 O 54 1243 27-3 121 573 3135 J 1'KO.lKi IB1> AKEA8 OK Si N Sl'OTS ASH F.\ It EACH 1>AY IN TIIK YKAB8 1878-1.S81. 303 I'.-luI 1'r. >.!' l.-.i \ -mi S|.,,|.s iimi l-a.uhi I'rojectwl Arru. Project**! Ami. Projected Aiwa. Qrwnwii'li 5'3 20-5 39 '54 1616 11-3 46 let i 1890 1-2 17 85 1 136 28-5 434 2216 3218 21 (63 *75 1641) 12-3 198 ,096 *77$ o 49 o 29-4 5*3 2235 1186 22'4 86 396 1665 '3'3 108 79* 1669 34 JO'S 312 1550 1916 *3'4 58 753 1152 '4'4 '43 647 368 4'3 *6 66 884 *4'4 *S' 1319 "47 '5'4 120 639 1078 5'5 55 2 5' I2O! i *5'3 250 1645 875 ''3 93 $7$ 3510 6-4 55 *54 1766 26-4 4*5 1831 1821 '7'4 *33 1222 1824 7'4 4' 2 49 1629 27-4 609 2641 831 18-4 78 '*57 1066 8'2 34* 440 July rj 35* 1446 '777 28-4 558 2677 2123 19-5 33* 1912 654 9'5 -- 4'9 "54 *'4 168 "49 2520 29-3 455 *433 1719 20*5 5" *54* 581 10-3 87 *S* "75 3'' 225 963 2486 30-5 53 3014 3*63 21 3 4*7 2218 206; "4 33 209 439 4'4 '39 535 3205 3' (47' 2661 3358) 22J 3*5 2112 '355 u ; 79 410 *44 5'5 106 543 *955 *3'3 410 1893 2045 '34 102 4" 2922 6'4 136 506 21 I I *4'3 34 1856 35 66 389 "335 7'' m 746 2625 *5'4 397 1580 898 15 i 64 387 1631 8 (140 852 1992) 26-4 .56 8 9 2 2482 16-3 70 4 3 "35 9'4 158 957 I 35 8 *7'3 *3 5'8 '539 17-1 59 261 > 1146 10 (223 1246 2619) Si-pt. 1-4 439 2308 3453 28-3 21 138 764 18-6 5 188 1008 "'5 288 '534 3879 2 (3>7 1722 *53) 29-5 9 61 2238 19-4 84 3.6 '747 12-5 271 '399 21 19 3-0 '94 "35 1623 30-6 o 34 467 20-4 86 399 1510 '3'5 225 1316 2823 47 '59 101 47* 3 ''3 o o 632 21-4 107 428 9'5 '4'5 205 1213 2646 5'3 *57 1167 '457 22'2 95 347 938 '54 1 86 1079 '553 6-4 191 970 2682 2 3 -6 183 533 2695 16-4 '4' 687 1709 7'6 236 1016 1645 *4'4 118 5'4 1940 17-1 77 281 8-2 '93 777 2978 *5'4 "5 792 733 18-5 118 497 1701 9'3 169 1164 2631 26-3 'ii 676 475 19-5 188 812 "795 10-2 *45 1187 '373 NOT. 12 S7 2316 *7'3 1 66 1039 1304 20'1 176 747 3*33 1 1*2 264 1716 358 *"3 5 28$ 28'i 288 1246 = 449 ZI'4 310 "77 33' I2'3 3" 1824 1032 3'3 28 in 764 29-1 *95 1282 946 22 (266 1168 *773 l 3 -6 565 2108 1481 4' 3 28 '5' 2317 30-5 292 '573 2093 23-I 222 1158 2245 '4'4 399 1914 **43 5'5 50 '97 1132 3''4 309 1675 '359 H'4 307 2013 1 IOO 5-6 354 1670 2144 6'3 43 188 1470 *5'5 637 2851 2167 1 6-6 *45 1258 1467 7'3 37 470 1090 265 68 1 3024 3462 '7'5 H 344 708 3 4* 480 5<>4 27-2 545 2238 1428 1 8-2 232 1208 2392 9'5 '45 596 44 28-4 57' 2741 1683 .9-2 2 39 '357 2686 10-2 .38 706 866 June i '4 381 2230 1166 29-4 652 79 2040 10-5 248 1098 '4*3 11-3 210 1053 7'* '4 365 1874 928 30-5 579 *745 874 21-3 '77 957 1617 12-4 285 1191 "59 3'4 374 1701 487 3' (539 *537 2002) 22-3 161 79 s 739 '35 34" '577 1904 4 "4 267 '457 1712 *3'3 '44 74' 1037 '43 156 1 IOC 1536 I' *'3 854 **6, 2 4'4 '37 643 852 >5'3 109 1096 1 104 16-5 90 34 *355 *5'5 98 6,4 803 1 6-1 301 '4'? 2284 7 (69 *45 '977) 26-5 125 655 '553 '7'5 5*3 *444 2266 8-5 47 185 1599 Aug. 1-4 498 2328 3 '3 27-6 '34 738 2645 18-5 590 2492 2342 9'* 73 416 1634 2-5 358 1808 5 2 95 28-5 183 820 2412 '9 - 5 487 22OO l66l 10-4 '4* 584 4*47 3-1 246 1224 39*7 29-5 '94 922 2408 20-5 565 **79 '373 ,1-4 '3' 839 4645 4'5 '59 953 21 50 30-5 203 654 1041 21 5 ;*3 2832 842 ' 057 97' 3-44) 5-6 i + ; 703 831 22-3 39' *3" Hi 3-4 182 1103 1643 6-5 "3 766 608 *3'5 436 2673 638 4'4 140 864 "77 7 ('4* 829 990) *4'3 299 189; 626 15-2 '95 "07 '345 8-6 '7' 891 '37" *5'3 250 1438 1422 16-2 '57 799 33 9-6 100 538 1711 26-4 *49 997 938 17-2 170 75 6 944 10-6 97 4" '944 Oct. 1-4 "9 628 1191 27-6 77 456 1286 18-2 '59 656 2155 11-4 81 344 2929 2-6 121 59' 1261 III 476 93* '9 (103 447 1906) 12-3 65 256 2223 3'4 112 5*5 '555 *9 - 5 '44 898 1039 104 46 8 1657 13-3 29 '75 1635 4'5 "9 545 7*8 30-1 187 53' o 304 TOTAL PROJECTED AREAS OF SUN SPOTS AND FACUL^E FOR EACH DAY IN THE YEARS 1878-1881. Total Projected Areas of Sun Spots and Faculee continued. Projected Greenwich Civil Time. "WVirtl Umbra. W HOI Spots 1881. d Dec. i '3 '34 90 2-4 535 176: 3'5 429 22K 4-2 339 I 9 8< 5'3 357 186 6-4 385 172. 7'3 33* '51! 8-3 *34 125; Faculse 1814 >455 1895 2132 1488 1627 1698 Greenwich Civil Time. 1881. d Dec. 9- 3 10-3 I I '2 I4-5 15-3 16-3 Projected Areas. Umbrae. 128 78 86 1 60 136 276 206 215 Whole Spots. Facula, 695 483 472 658 1 06 1 1506 'H 2 1366 1263 2978 354 4096 3216 1612 1228 272 Greenwich Civil Time. 1881. Dec. 17-5 18-5 19-5 20-6 21-5 22-3 23-2 24-3 Projected Areas. Urnbrse. Whole Spots. Faculie. '97 244 1 60 121 I8 7 45 976 IOO2 75 6 568 53 366 201 217 979 1546 946 2512 631 H37 611 Greenwich Civil Time. Projected Areas. Umbra. 1881. Dec. 25-2 26-2 27-2 28-2 29-1 30-2 67 43 55 47 17 Whole Spot*. 54 136 299 33* 246 207 Faculae. 1265 1058 703 1864 1635 1926 2251 TOTAL I'HOJICTBII . ,. KACII l>.\v IN THK YKAU* 1882-1885. TOTAI 1' I IAJ (IF B II I>AV IS THE VEAI' THI 1 - TAkKX AT THE II" I'lN IS I: AT THK ' ' '. ! 178. IT!. ! Ar.;i i. the Are* as it is measured on the Photograph, nn.i.nn led for the effect of foreshortening, and expressed millionth* df tin- Sun'- apparent : The ('.reeinvirli Civil Time is expressed by the month, day of the month (civil reckoning), nd decimal of a day, reckoned from Gr<- Mean Midnight. The decimal of the day has not been given for days when neither spots nor faculiu were observed on the photograph. Dates for which the areas are given in brackets indicate .Uy. for which no photographic Record is at present available. In these cases the areas have been obtained by interpolation from the measures of photographs taken on the days immediately preceding and following the day for whi.-h the photograph is lacking. These interpolated values have been used in taking the mean daily areas for each rotation and fur ea>-h U'.ir, j-ivi-n in the last section of the volume. Projected Are**. Projected Area*. Projected Areu. Projected Area*. Greenwich Qreenwich Greenwich Greenwich Civil Tirar. Civil Time. Ciril Time. Civil Time. Umbra. Whole . Sl-ota. F culle - 1'lMV .1 Whole Spot*. Famlir Umbra. Wkeh SpoU. r. u: Umbne Whole Spot*, Faeulc. 1882 1882 d 1882 d 1882 d Jan. 1-2 53 -4- 1070 Feb. io'j *49 1710 1313 Mar. 22-4 537 2369 *535 May l'5 83 3*o 687 2'I 339 3+ Ifj 3*5 1498 2199 *3'5 49 6 2329 2320 *'5 1 10 614 2675 3'5 76 461 1097 12-5 368 1663 1236 *4'4 *54 1801 2652 3-6 21 1 73<> 1321 4'2 40 199 977 131 176 1290 3118 *5'4 495 2027 838 4'3 122 663 1607 5'2 "4 493 835 '45 360 1617 1291 26-5 385 '994 *394 5'5 3*7 1102 *5*7 6-2 134 708 644 '5'5 347 1833 688 27-4 311 1514 2839 6-5 4,6 1565 *495 7-4 120 713 1483 164 *9S 1501 1705 28*2 130 1081 2703 7'5 444 1848 353* 8-2 4' 3S4 73* 17-6 306 1149 1116 29-2 112 815 '53' 8> S'5 2156 333* 9-4 23 12- 993 18-5 205 1006 2676 30-4 126 77* 2183 9' 1 270 I96l 3344 10 (46 270 1013) 19-6 120 553 786 3''4 202 761 45*7 10-5 595 *47 4353 1 1 (68 414 1032) 20-3 5* 604 1536 11-5 48. 2466 1004 12 (9' 557 1052) 21 (122 650 1495) 12-6 589 3050 2721 13 S 114 700 1072 22'4 I 9 I 696 1455 Apr. 1-4 I 3 6 661 2778 '3'4 801 3268 3*85 I 4 2 90 480 1450 23-3 58 448 '54* 2-6 9* 583 1464 '4'5 801 4009 *754 15-2 83 360 1099 24-2 61 390 3171 36 131 549 1401 '5'4 893 4168 3569 16-2 73 394 1267 2 5 -2 *S *S9 799 4'5 *'3 894 4409 16^ ,196 479* 385' 17-2 57 35 '549 26-5 22 136 65, 5-6 178 875 1922 7'6 973 4926 6380 18-2 49 300 2090 27-4 4 6 '74 773 66 i6fl 1069 3178 18-4 873 5104 *744 19-3 41 480 1405 28-3 59 180 1 140 7'3 284 "5* 1 560 19-6 578 37*7 1244 2O'2 S 06 1068 8'4 *77 I 122 495' 20-4 [ 461 3"4 1816 21-5 161 559 1060 9'5 148 734 344' 21-5 586 2482 3013 22> 58 444 2925 Mar. 1-4 55 *73 1471 IO'I 86 59 475 22"! 2O3 1676 4621 *3'3 61 426 1624 *'4 98 500 1635 11-5 344 1634 2368 23-1 122 1136 3357 24-6 *4 553 456 3'6 '79 9*9 1670 I2'l '95 '*57 3385 24-1 82 826 1288 *5'3 52 457 '49 4'5 265 1079 '45* 13-2 7 2141 *554 25-1 43 4M 2603 26-3 60 568 575 5'2 '44 814 2063 '4'5 66; 397 i66t 26-5 77 270 9*5 27-2 85 600 3007 6-2 '*3 928 1096 382 3433 48*7 *7'4 7* 192 826 28-4 170 888 285 7'3 138 1005 999 16-5 614 5025 *94 28-1 5* 298 1 1 1 1 29-2 101 662 IM 1 8-2 203 1239 17-6 1388 6750 2768 29-5 9 s 478 1387 3 ("2 67. 1609) 9" 3 246 1385 374 >8'5 '535 7638 3773 30-4 H 615 366 3' (4 679 ! 4 oS, I0'2 *59 1362 6501 19-2 638 6537 *5*7 3''4 '79 608 II '2 282 1686 4757 20-4 1175 61 > 3847 12'3 *3* '59* 3423 21-4 1364 6892 2316 Feb. 1-4 '35 6S8 1207 3-6 426 1634 1649 22-2 490 3839 3'74 June 1-3 125 676 "33 2-2 105 733 355 14-4 4'7 '473 1884 23-5 5l6 374 *524 2-3 124 720 1055 3'5 129 650 37 5-6 182 890 622 *4'5 37' 1838 343 3'4 '77 679 1853 4'* 85 636 *337 16-4 '59 790 653 ;, 2 99 79' *593 4 4 5 '*7 59' 5'2 79 612 2161 17-6 '3* 69, 657 26-4 459 1461 5-5 96 447 79 6-2 116 7*8 2179 18-5 176 778 873 27-2 52 596 2665 6-1 74 400 1097 7'3 IZl 1 167 567 19-5 1 60 857 o 28-6 us 463 1063 7'5 4' 264 1 1 10 8'3 208 1498 1032 20-4 3'4 '575 49' 29 (86 316 1176) 8-1 , 32 ' 5 1 748 9 (2*9 1604 1172) 21-5 4'4 2249 2164 30-6 54 169 1289 9'5 79 346 2873 PHOTO-HKLIOGRAPHIC RBSCLTS, 1874-1885. 306 TOTAL PROJECTED AREAS OF SUN SPOTS AND FACUL^E FOR EACH DAY IN THE YEARS 1882-1885. Total Projected Areas of Sun Spots and Faculse continued. Projected Areas. Projected Areas. Projected Areas. Projected Areas. Greenwich Greenwich Greenwich Greenwich Civil Time. Whole Civil Time. Whole Civil Time. Whole Civil Time. Whole Umbra. Spots. Faculae. Umbrae. Spots. Faculie. Umbrae. Spots. Faculae. Umbrae. Spots. Faculae. 1882 d 1882 d 1882 d 1882 d June io'2 59 3' 2 "73 Aug. 7 (20 '43 202 l) Oct. 4-1 449 2633 1783 Dec. 1-2 '33 1161 1596 1 1-4 120 736 2285 8-6 O '5 2266 5'3 301 1804 1679 2-3 43 352 1831 12-4 21 I 948 3807 9-6 52 199 1017 6-1 260 1 107 '953 3-2 4 92 2794 13-3 99 946 '339 10-4 88 646 221 I 7'5 45 270 938 4'4 o o '497 H'5 259 1531 1750 11-6 263 1261 3 l66 8'5 28 85 2428 o 44 ii 14 J 5'5 280 '553 1563 I2'4 237 1118 3973 9'4 7 38 1841 6-2 7 89 614 16-4 33 '755 2947 '3 (188 883 2646) 1O'2 '7 116 1308 7' z 31 118 1 141 I7-5 433 1842 5486 I4-5 138 648 1318 I I'2 22 '47 1072 8-2 36 171 795 18 (335 '549 4207) '5'5 '32 548 ii 19 I 2 '2 34 260 1658 9-5 121 558 1 1 68 '9 (236 1256 2927) 16-6 42 271 729 13-4 "5 5'9 1682 I0'2 9 8 660 739 20-4 138 9 6 3 1648 17-2 16 '99 1988 '4'3 9' 783 2196 I I'2 78 747 2429 21-3 37 620 1031 iS-i 61 1089 IS' 2 130 849 2013 12-3 118 817 ,185 22'2 58 572 1056 '9 (200 994 2675) 1 6-1 118 1 165 2398 '3'4 '45 746 1081 2 3 '4 99 5'9 '877 20-5 338 1663 4260 17-3 251 1205 7'3 '4'3 40 608 66 24-4 58 295 '55' 21-5 432 1844 376; 18-3 273 1786 669 I5-3 51 735 1180 25'5 52 264 2I2O 22-4 488 2505 '735 19-3 265 1855 949 1 6-2 79 722 2196 26'4 54 279 917 23-5 459 2253 1848 20-5 523 2166 '597 17-2 62 623 1791 27-5 276 896 2732 24-6 3'3 1813 760 21'2 338 1746 '577 18-2 76 703 1 128 28-4 180 1609 953 25-6 342 '457 883 22-6 370 '934 2540 19-5 1 06 474 689 29-2 1 66 1408 1213 26^4 287 1132 2566 2 3'5 763 2988 3'44 20-4 59 393 '73 3'3 '35 '43' 2236 27-4 123 943 '433 24-2 39' 2652 4839 21-5 53 230 2608 28 (140 780 1368) 25'5 588 333 2096 22-5 77 305 "45 29-4 '57 616 1303 26-5 657 2913 2548 23-5 38 122 o July 1-4 326 1546 5161 3'6 43 339 1188 27-3 452 2570 3545 24-2 23 242 1 136 2'5 207 895 4408 31-4 22 185 1932 28-2 373 2541 2203 25-2 36 142 1838 3'5 2OI 826 2394 29-6 749 3i74 526 26-3 4' 2 44 596 4 (168 675 2607) 30-2 458 2566 1316 27-2 48 226 1885 5'5 '34 524 2819 Sept. 1-3 58 267 2149 3 ''4 610 2714 29+5 28-2 64 387 1801 6 (85 332 2872) 2 '4 3'3 1244 1751 29-3 88 43 2 2822 7'4 35 140 2924 337 1259 1763 30-2 196 801 3289 8-1 18 70 2612 4'5 404 1667 1603 31-2 302 1461 3690 9-6 2143 5'3 776 2997 1015 10-4 26 9' 2629 6-5 399 21 19 2541 Nov. i -6 509 2161 2424 1 1-3 39 219 2366 7'4 404 1416 1328 2-4 401 1864 1770 i2'5 I 10 5'5 1310 8-4 170 698 1320 3'4 223 1473 ' '32 13-2 55 447 "33 9'5 '33 5'4 2595 4'4 254 1568 1649 I4-5 168 762 1996 10 (80 381 2794) 5 '2 338 1663 3385 15-6 198 1248 1907 11-4 26 247 2992 6-4 294 1829 221 I 16-5 "5 1023 4229 12-5 4 2 239 353' 7-2 300 1664 579 '7 '4 '35 923 3678 '3'5 84 483 1250 8-6 461 '995 2393 18-5 226 1 156 3132 '4 ('39 769 1574) 9 "4 449 2230 1770 19-5 256 1085 2132 '5'4 '93 1055 '897 10-6 534 1570 1358 20-5 210 1032 2386 16-2 85 927 1805 11-5 595 2421 2109 21-5 2OO 1 150 2715 '7 (214 1198 1605) I2'2 294 1889 2007 22-1 '37 954 374 18-4 342 1468 1405 I3'2 482 2307 '733 23'6 186 972 2823 19-1 162 "35 3939 I4-2 609 2887 1729 24^ 170 773 4755 20-4 213 959 785 I5-2 806 334' 2485 25'2 61 343 1330 21-3 107 874 1204 16-1 872 4005 1568 26-4 81 302 2794 22-6 185 788 2204 I7-3 783 4639 2494 27-4 59 298 1598 23-2 98 666 \ 1307 18-5 1649 5423 354 6 28-2 o 170 1226 24-2 83 417 1662 19-6 1324 537' I 101 29-4 34 399 2602 237 '355 '332 20-4 756 4229 1635 30 (41 508 23'S) 26 - 4 428 1691 2906 21-5 529 3261 507 3''5 48 6,7 2034 27-4 510 2292 3236 22-3 368 3443 2936 28-4 73' 2713 357' 2 3 '4 337 2853 2980 29-2 527 3H8 2273 24-5 475 2159 2084 Aug. i (124 763 '979) 30-4 777 3695 788 25-4 478 '947 1903 2-4 200 908 '9 2 3 363 1665 1675 3 '^ 1 1 1 735 2384 27-5 454 2079 1299 4'5 84 673 1401 Oct. 1-5 926 3949 1187 28-5 55 2292 3208 5 (62 472 '588) 2-6 856 2671 29-2 275 1809 337 6 6-5 39 271 '775 3'4 878 3120 2794 132 '534 3184 TOTAL PBOJECTKI- AREAS - -sms AND FACUWJ FOU KACH I issi' 1885. 307 'I'ot.ll 1': SIMI S],..ts mi twi Areas. Projected Arr. PrujrcUj Area*. Project*! ANM. IGrernwi'-li Oreeawich Greenwich Civil Tinir. Unibnc. Civil Time. I'm- m Wboli S|K>U. Fkculir Cml Timr. Cml.i*. Whole >,-. ; Fcul. Time. Dmbn*. -! : FlClllB. 883 < 1883 d 1883 d 1883 " .l.lll. I'! 359 2019 1965 M.ir. 1-2 36 222 268 Apr. 29-1 121 495 *354 June 26-4 39* 3020 978 '4 64S 2758 1348 2-6 3* 88 691 30-5 48 3'4 54 *7'4 59 3798 "73 3'* 384 2635 3-5 o 38 225 28-4 66, 44*9 '394 4'* 33<> 2363 2429 4'5 21 '337 29-4 1004 5090 5*' 5' 2 354 2195 1969 5'5 o O 1030 May 1-4 35 *97 793 30-4 9*5 5296 222 6-5 300 '499 1005 6-4 O 939 2-2 4* 208 2136 7-2 '4; 1014 1924 27 "5 616 3 '4 1 1 192 732 8'4 54 338 564 8-6 36 *S5 1307 4'5 5 '39 *94 July 1-4 767 4112 182 9'4 81 3*9 '354 9'4 86 84 21 10 5'5 '7 '4* 737 2-1 467 3827 3050 10-3 1 06 7'* 3088 10-4 *7 359 2*6o 6-4 20 168 1705 3'* 47* 3336 '739 in 101 629 1982 1 1 (56 589 2011) 7'i 38 337 2 '93 4-5 501 2856 1059 11-2 "34 803 3002 12-6 85 819 1762 8-1 88 493 "54 54 4" 2228 "7* 3-2 !-- 1267 2070 '3'5 189 1045 "55 9' 1 >*3 828 1426 6-4 312 1670 1077 14-2 2 49 1631 2685 14-2 121 975 '399 lO'I 103 789 1604 7'5 47 '473 56. '55 284 1630 77 54 196 923 45* 11-4 '7* >o*5 '5 2 3 8 (149 '337 652) 16-6 400 *437 1440 16-5 '5' I IOI 2249 12-2 167 932 3914 9-6 151 1201 74* i;-- 238 2342 2550 >7'4 186 1 167 '953 '3'5 '93 1266 69; 10-4 235 1485 736 18-2 *34 2297 2121 18-2 '37 1300 2403 14-2 189 1207 1615 "'5 3'7 '993 *459 19-2 363 2120 769 19-2 '33 1322 1787 '5'4 187 918 607 I2'3 21O 2090 1689 20 (*57 "5*4 964) 20-2 126 "95 1580 '6-5 182 948 546 '3'4 365 2649 1893 21 '2 150 928 I1 5 8 2P2 '25 1246 '*S4 '7'4 246 1099 308 '4 (4'8 2591 1603) 22-4 136 1907 22-6 259 1738 '44* 8-5 '37 776 : 385 '5'5 47' *53* 1312 2 3'4 74 390 560 *3'5 *38. 1712 3*9 '9'5 "3 684 676 16-2 256 2116 787 *4 (8 1 4'S '45') *4'5 3^5 '977 291 20'l 66 456 2793 '7 (37* 2692 2114) *5 (87 439 2 345> 25-6 '97 1231 768 214 29 1 60 1066 18 ($01 3267 344*) 26-4 94 464 3*37 26-5 58 1136 1330 22> 12 546 19-6 623 3843 4769 27-2 68 5'4 1117 *7'4 5' 743 807 *3'4 18 no 312 20'2 436 3847 2924 28-2 57 44 2382 28-4 '44 967 658 *4'5 p 47 1403 2I 5 638 4356 344 29-2 9 53 1818 29-4 169 '374 1642 *5'4 o 36 9'4 22 (687 4589 383') 30-4 82 5'7 900 30-2 242 1563 2024 26 (o 18 49') *3 (736 4821 4222) 3'"4 55 *95 323 31-6 289 1640 *455 27-6 o o 68 *4'4 75 5054 4613 28-4 o o '57 25-6 752 4547 1950 29-4 o 8 230 26-4 507 2710 1249 3O - 6 9 3i 7' 27-4 544 2917 946 Feb. ! i4 576 1124 Apr. 1-5 287 1929 333 31-4 26 '85 '39 28-4 456 2560 1848 2'2 124 634 1912 *'4 328 2064 639 29-4 37 1695 *3*7 3'4 '48 845 1000 3'4 35' 2203 "45 3> (*57 '544 1816) 4'5 '57 781 1 183 4'' 3'9 1823 1272 June 14 104 483 252 3''5 206 '39* 1306 5-6 186 815 647 5'6 405 2403 *344 *'5 400 2024 1382 6'5 *93 1235 2398 6-4 348 2546 1693 3 '4 384 2350 1844 :'- 222 1496 395' 7'5 138 1360 477 4'4 470 2956 704 Aug. i -4 84 563 982 8-2 I 9 '535 2662 8-6 *34 1214 755 5> 340 2199 176 it 39 278 1582 9'5 373 "34 1765 9'4 200 1125 1879 6-4 **7 '745 '*55 3-6 20 9 1 *73 1O'2 229 1930 1318 io - 6 '37 846 "49 7'' 150 '355 1480 4 <*S 116 559) IP) 288 1776 995 II*l 74 5 2 9 I2 75 8-6 228 1 1 02 556 5 (30 '4' 844) 12'2 204 1856 1200 12-4 288 1506 94' 9'4 65 748 o 6 (35 166 1130) '3'4 3>7 2 '54 2234 '3'3 3 2 ' 2550 3131 10-1 49 49 2 1071 7'4 4 191 1415 I 4 '2 212 '943 2 755 14-2 39* 3339 4860 i ri *9 474 768 8'3 26 298 '377 I 5 -2 216 2178 2098 '5 (47 z 3'55 3263) 12-5 87 7*4 979 94 3' 3'S "33 116-6 382 1677 1388 16-5 55* 2970 1666 '3'4 I 10 1 170 476 10-4 39 I 6 ' 2130 7-3 2 4 6 '499 2502 17-1 4*' 333' i;|- '45 '75 '3'5 1041 11-4 "4 6>7 7*8 18-2 196 122; 3129 18-4 Z 74 343* 559 '54 75 998 1510 12-5 156 826 5>' 19-2 122 I 120 2617 19-1 368 2971 1293 16-5 69 681 957 '34 39 818 1 IO2 20-2 93 645 2096 20-5 64 1632 o '7'4 88 669 882 '4'4 122 799 1040 56 445 1894 21-4 222 1402 o 18-6 '97 "33 734 5'4 84 482 '459 22-2 43 365 1596 22'4 '37 '339 7 2 9 192 I 12 1119 2483 165 'i2 I' 2 3*73 23-5 o o 210 2 3 -6 "7 " ' 677 1260 20'6 358 2040 1,64 17-1 68 600 37" 24-2 o 55 9*4 24-6 103 43' 1222 21-4 497 2572 1700 18-4 126 696 437 25-2 9 63 '877 *5'5 207 815 I2OO 22-2 3<>7 *73' '945 19-4 79 506 '5*3 26-5 69 3'9 1208 26-4 1 20 75 1230 *3"4 495 3022 2054 20-4 70 P 4 33 17-6 53 37* 739 27-2 93 481 1462 242 *3 2392 '9*3 21-4 88 629 844 28-5 55 3'7 755 28-2 IO1 S'9 977 2 5 -6 435 *895 1917 22-4 86 870 1067 308 TOTAL PROJECTED AREAS OF SUN SPOTS AND FACUL/E FOR EACH DAY IN THE YEARS 1882-1885. Total Projected Areas of Sun Spots and Faculse continued. Greenwich Civil Time. Projected Areas. Greenwich Civil Time. Projected Areas. Greenwich Civil Time. Projected Areas. Greenwich Civil Time. Projected Areas. Umbrfe. Whole Spots. Faculse. Jmbrae. Whole Spots. Faculse. Umbra. Whole Spots. Faculie. Umbrae. Whole 1 , Spots. Facul8e ' 1883 d 1883 d 1883 d 1884 d Aug. 23-4 '75 1048 1568 Oct. 20-5 370 2354 1057 Dec. 1 7 '3 168 1 191 3576 Jan. i (163 1245 3'98) 24-4 171 1118 5H 21-5 385 2IO2 885 18-3 IOI 776 2351 2'2 84 820 2980 25-4 182 1005 2731 22- 5 320 1692 1700 '9'3 "4 1026 4486 J'l 67 773 1936 26-5 M3 1 196 3 l6 23-2 213 1123 2528 20-3 165 1721 5327 4'4 61 960 2025 *7'4 155 1222 704 24-3 172 9 66 2969 21-5 384 275' 2500 5 - 3 ,46 1641 2932 28-4 502 1763 39 25-4 I2 5 1272 1370 22-3 37' 372i 2907 6-2 242 2517 2 975 29 (474 2246 662) 26-3 131 '497 1740 23'2 567 4475 2734 7-2 387 34' 2 953 30-5 446 2728 1014 27-5 271 2054 i 181 24'3 546 4401 15" 8-3 348 3634 3408 Ji'3 480 3056 1567 28-6 3'5 2147 1848 25-2 548 4778 2057 9'3 337 3533 2063 29-6 3 6l 2209 1680 26-2 729 4348 2252 10-3 426 4245 1918 30-3 397 2512 2600 27-2 587 3659 21 10 11-5 783 435' 655 Sept. 1-4 547 3193 344 3i'3 460 2647 3387 28-2 5'8 2926 2844 12-5 410 3302 1512 2 (589 3287 696) 29-2 402 2522 3852 13-2 460 2712 3052 3'4 632 3381 1047 30 (322 2096 3634) i4-3 ,63 1945 2161 4'4 512 3072 1788 Nov. 1-3 33 2496 2235 3' ( 2 43 1671 34'6) 15-2 230 1777 ! 2481 5'5 470 2831 881 2'3 244 1989 3284 16 (255 2040 3412) 6 (37 2355 573) 3 '2 312 '935 4042 s I7-3 279 2 33 4343 7-1 269 I8 79 265 4'2 34 1832 4819 18-4 33 2326 3596 8-5 334 1823 2165 5 '4 339 181 1 2710 19-3 278 2164 2291 9-6 307 1670 "95 6-3 252 I35 1 2809 2O'5 427 2272 4501 10-4 275 1666 3056 7-2 148 1152 2363 21-4 3" 2215 961 1 1 (353 2OIO 2909) 8-2 98 723 201 5 22'3 226 1894 2753 12-5 430 2 354 2761 9'5 164 1158 1192 23-I 229 1576 2554 I3-5 5>5 2698 1864 10-5 385 1832 1429 24-5 240 1301 848 14-4 596 3028 2424 ii (455 2138 1422) 25-4 190 1573 1624 I5'5 614 2929 118 12-5 525 2444 1414 26 (3' '7o8 3953) 16-5 57i 2622 603 '3'5 546 393 587 27-5 43 1843 6281 17-4 418 2352 836 ,4-6 <99 3581 603 28-5 498 2618 ' 2235 18-5 348 1879 2904 ,5-6 897 4702 1592 29-4 278 2129 2400 19-5 174 1352 1710 16-2 588 4542 2329 3'3 253 2 2 43 1963 20-3 '54 1031 653 17-5 804 4524 947 3i'3 269 2668 3688 2 I '2 105 624 633 18-2 549 4188 '934 22'3 73 610 1485 19-5 663 4054 3876 23-5 70 302 1299 20-4 560 3864 3290 Feb. 1-5 516 3287 4132 24'6 383 21-4 448 2762 1571 2-3 3'8 2783 '734 25-4 o 659 22-4 403 2707 1245 3 (45 2985 '397) 26-6 48 268 23-5 316 2562 3294 4'5 581 3187 1059 27-4 19 79 807 24-4 232 221 I 2'53 5'2 3i3 2713 1609 28-4 41 226 548 25-2 '34 '574 1783 6-2 333 2684 2296 29-4 33 256 1095 26-5 173 905 1936 7-4 310 2368 2240 30-1 39 273 763 27-5 Hi 851 908 8'3 264 1858 2028 28-5 J53 80 1 1226 9-2 166 1499 3189 29-4 148 889 1277 10-5 312 '735 3695 Oct. 1-5 27 226 598 30-3 176 1236 2392 1 1-4 33 1603 4484 2-6 67 535 1222 12-5 240 1521 1078 3'3 89 520 1028 13-4 3'6 1696 3887 4'3 93 677 1239 Dec. i (142 977 2281 14-6 580 2478 3240 5'5 150 663 93 2'2 107 717 2169 I5-5 454 2575 2136 6-5 180 922 1556 3 (68 462 1725 16-5 416 2248 2427 7-1 1 86 1 126 1840 4'4 2 9 206 1281 '7 (407 2258 3347) 8-1 278 '437 2424 5'5 o "99 18-4 397 2268 4267 9'3 368 2193 2425 6-5 '4 180 419 '9 (343 2068 304) 10-5 678 3585 2681 7-6 73 400 1340 20-5 289 1868 1813 I I '2 56, 3960 3391 8'3 79 621 1 66 1 21-5 196 1606 192 I2'2 630 4173 , 2023 9-2 89 768 1298 22-3 151 1631 '354 S'4 1091 5399 l6z2 10-3 '5' '325 1401 23-4 231 1456 '773 H'5 1124 5396 1969 irj 468 2244 2493 24-5 224 1576 3629 iS'4 1145 6142 4155 12-3 309 2056 3 22 5 25-5 289 1364 3631 .6-5 700 4546 3007 13-5 386 2457 2325 26-5 360 1853 4046 17-4 498 3333 536i H'3 269 1886 1419 27-2 204 1542 2221 .8-4 377 2604 1690 '5'5 '74 1168 881 28 (3'3 2OOI 2989) 19-3 359 2555 2479 ,6-5 '73 1 109 624 29-6 422 2460 3756 TOTAL IV AI.KA.S UF SUN Sixns AN: H>I. K.\. n HAY IN TIIK YKAKS 1882-1885. sot Total I'mji-i-ti-il A MM.- of Sun Sj.ots and Facuhu cuntintutL Projected ArcM. Projected Areu. Project*! Are... Qrwnwich Greenwich Greenwich Green*, h Civil Tim*. t';j.l :.! Whole FVul.tr Ciril Tim. Dahni Whole pete Faculc Ciril Time. I'mline. Whole Bpota, Kacula Time. Umbra. Whole SpoU. i rita l>8 4 d 1884 ' 1884 < 1884 ' Mar 1-4 34 2469 4540 Apr. 29-5 *33 2 444 '94 June 26-5 O 367 338 Aug. 23-4 '*3 1096 in; 16 375 2376 2104 30-4 140 2321 78 *7'S 48 536 819 *4 5 68 1045 1294 3'3 230 "53 '947 28-4 73 630 43* *S' 219 1226 669 4 (189 :o.>7 2170) 29-4 85 845 288 16-4 190 '459 1241 34 2040 *393 May 13 184 2095 1252 30-5 165 1293 346 27-1 *7 '35 1838 6-3 187 2O22 1570 *'4 168 1208 1428 28-4 '99 '336 *"4 300 |6 9 I '*47 3-6 *9 886 1 1 1 29-5 165 1635 5*4 8 (302 I 9 1I 99') 4'5 39 640 358 July i (201 '550 433) 30 (i4 1*77 49*) 9'5 34 2132 M 5 846 279 2 (*37 1807 5'9) 3 (83 919 460) io'6 314 tsjo 1088 6-4 *7 589 596 3'3 *73 2064 1606 i rz 84 '995 '947 7'* 54 641 1972 4'* 4'7 *457 '7*3 12-6 288 1616 488 8-3 35 299 1348 5'4 *57 2015 2194 Sept. i (4' 562 4*7) IJ (260 1688 702) 9'5 94 974 460 6 (204 '550 '978) *'4 o 204 395 ,46 *3* 1760 916 10 (209 1649 775) 7 os* 1085 1761) 3'4 o 128 "43 IC'S 4*3 2657 1370 1 1-2 3*3 *3*3 1089 8-3 99 620 '545 4'* 8 101 1419 16-4 3'4 2368 675 123 *79 *343 *33 9-2 116 617 '743 5> 68 568 376 2144 i 220 13-2 3'5 2021 1840 I0'2 56 497 1506 6-3 20 107 1078 18-4 348 *-47 '4'3 291 1847 962 1 l'2 49 375 1074 77 '*5 558 *'3J 19-5 336 2248 '395 '5'3 246 I 59 8 '4*3 I2'3 >37 635 1 187 8-4 79 632 1296 20-4 328 2172 1212 16-3 322 '54* 2780 '3 (123 586 1227) 9* '3* 1061 '3*9 n-S 336 1839 2672 17-3 **7 1686 2726 '4 (109 538 1268 10-5 97 1634 1722 22'1 3'4 '949 34 6 5 18-1 *93 1712 1878 '5 (95 489 1308; "5 288 '9*7 2148 2 3 -6 289 >74 I3 9 8 19-3 1 201 5 3399 16 (81 44' '3491 12-4 47' 2503 '7*3 4*3 **S '74 2 190 20 (300 1804 2878) '7 (67 39* 1389) '3'4 497 2804 "3* 25-3 287 1562 1510 21-3 282 '59* *357 18 (53 344 '430) '4 (5*5 2871 '*74) 26-3 203 1291 *775 223 3S '79* 2179 '9'4 39 296 '470 '5'4 553 *937 '4'5 27-3 178 978 2048 *3'3 *74 1621 1801 *o'4 44 296 '439 16-5 34' 2384 1763 28-3 116 815 2481 24-6 204 1803 263 21 (61 398 4) 17-4 4*9 **43 *'57 *9'3 66 7'3 *47S 25-1 357 '995 '59' 22 (77 499 110 18-4 347 1764 1485 30-2 42 508 1504 26-2 298 1956 2062 2 3 (94 600 796) 19-6 293 1848 '07$ 3'3 54 615 2952 27-1 36i '95* 3287 *4'4 in 702 58' 20-4 298 '9*4 1367 28-3 379 2382 2565 *5'5 '*5 684 6'3 21-4 248 1802 1764 29-2 398 2338 '733 26-5 '*5 856 "4* 22-5 300 1981 '479 30-6 304 1832 1465 27-2 96 74* 1138 *3'4 309 '93' 1496 Apr. 1-3 130 810 H45 31-2 202 '94* 1983 28 (no 874 "35) 246 *3> 1704 1512 2 "4 221 2177 77' Z 9 0*5 100$ "33) *5'5 304 2098 1048 3'* 562 3430 3076 30 ('39 "37 1130) 26 (284 1876 1980) 4'5 4'4 3907 1689 June 1-2 '97 1619 1895 3' '4 '54 1269 1128 17-2 264 1654 2912 5'4 500 4048 5*99 2 ('93 1510 *477) 28 (262 1625 *45) 6-2 468 3473 4016 3' 2 189 1401 3058 *9 (261 '597 1991) 7'3 *79 -4'7 1032 4'3 "4 1204 2371 Aug. 1-4 286 2237 '79* 30-5 *59 1568 '53' 8-3 310 2384 3616 5 ('77 1246 1722) 2 '4 35* *355 1556 9-6 279 2034 640 6-2 *39 1288 '73 3-6 363 1841 1117 io'6 261 2090 841 7'* 198 "35 1068 4'3 *44 '955 745 Oct. i (262 1585 644) 11-3 336 2302 2964 8 (163 982 '077) 5'5 67 820 1480 *'4 265 1602 756 12 ("3 '779 2604) 9 (128 829 1086) 6-5 55 55' 1398 3'5 393 2183 '75* '3'4 109 1255 2244 10 (93 675 1095) 7'5 *9 33' 557 4'4 3*6 1962 947 '4'3 86 865 3 HO 11-4 58 5 2 * 1 104 8-5 69 535 1099 5 ' 346 *'4S 3015 5'3 97 7"7 1589 12-5 9' 567 49* 9 '4 60 536 7'S 6-3 307 '793 3743 164 105 763 1760 13-1 93 582 734 10-6 '*7 73* 292 7'5 337 979 '540 7'3 1 86 920 55> 46 87 600 707 "'5 76 833 755 8-5 381 '979 44' 18-3 85 127; 2831 '5'4 104 593 510 12-6 78 739 278 95 '95 1922 35 19-5 157 1696 1009 16-6 59 5*4 '3'3 138 MI 1511 10-3 207 '579 1823 20 2 203 1893 2720 '7 (58 545 o) 44 97 9 6 ' 1800 Hi 202 1538 2396 21-5 8; 1476 5'9 8 (57 565 o) '5'5 82 756 1052 12-2 '4' 1126 3182 22'6 3'9 2136 408 '9 (57 586 o) 16-4 47 4*8 1225 '3 - 4 7' 712 *3'4 250 2579 1125 20-6 56 607 '7'5 61 4*7 45' 14-5 10 363 1856 *4'4 37 2736 720 2 '"5 43 402 18-6 53 37* 1163 15-2 39 35 2683 25 3 5" 2694 2744 22'I 51 553 886 '9 (53 464 1070) 16-2 3; 344 1358 26-5 45 2945 163 2 3'4 38 369 20-4 53 556 976 17-2 13 261 357 27-2 446 2918 1647 *4'5 18 212 150 21-4 191 970 1692 18-4 66 458 982 28 (34<> 2681 921) 25-6 16 302 22-4 2 '7 1385 '97' '95 ** 3'3 4" 310 TOTAL PROJECTED AREAS OF SUN SPOTS AND FACUL^K FOR EACH DAY IN THE YEARS 1882-1885. Total Projected Areas of Sun Spots and Facula; continued. Projected Areas. Projected Areas. Projected Areas. Projected Areas. Greenwich Greenwich Greenwich Greenwich Civil Time. Umbra. Whole Spots. Faculoe. Civil Time. Umbrae. Whole Spots. Faculse. Civil Time. Umbrne. Whole Spots. F,K-ul:i;. Civil Time. Umbra!. Whole Spots. Faculae. 1884 d 1884 d 1885 d 1885 d Oct. 20'2 62 330 1107 Dec. 1 7 '2 108 764 2382 Jan. i '2 36 434 1914 Mar. i -4 I 5 6 1222 I 5 II 21-2 83 444 1227 18-2 107 805 2221 2-3 58 339 2985 2-6 '47 1608 1 126 22'5 90 908 1451 '9'5 118 1348 ISO 3-2 II 9 489 '743 3-2 289 1749 794 23'5 191 1239 2489 2O'2 "75 1419 933 4'2 83 486 3831 4'5 402 2744 658 2 4 (382 I 95 8 1814) 21'5 321 1812 1139 5'2 40 S 2 ? 1821 5-6 245 3271 73 2 5'5 573 2677 1138 22'5 354 2152 '5'5 6'5 5 127 o 6-2 470 3235 1648 26-5 55' 2754 1807 23 (3' 2027 '539) 7'5 o 69 o 7'5 347 2737 1356 27-4 286 2104 ' 1075 24-3 266 1901 1562 8-5 60 o 8-2 324 2668 3232 28-3 256 1879 1708 25-2 282 2330 2737 9'5 o 36 4' 9'5 178 1389 4261 29-6 332 1877 47' 26^3 250 1827 1378 10-3 4 40 2084 10-5 U5 1017 1648 30-4 267 1701 895 27-2 200 1838 2609 1 1 (9 70 2013) irj 97 993 2537 3i-4 293 1621 2687 28-2 2 53 1512 1886 12-5 '4 99 1942 12-4 150 986 1538 29-2 '75 1226 1716 13-5 46 167 944 13-5 207 1071 1441 30-2 "3 929 1979 14-2 30 161 1729 '4'3 138 998 1848 Nov. i -2 264 1341 3739 3''3 7 2 734 2115 15-2 36 104 2375 I5-5 129 986 685 2'2 86 656 2625 .6-3 '7 '45 984 '6-3 85 785 1 164 3'4 34 244 823 17-2 26 262 1269 '7*4 88 528 501 4-6 30 '97 778 1 8 -2 ' 40 476 2723 18-5 4 2 384 962 S'4 18 116 2171 '9 ('95 1247 2475) 19-4 22 260 772 6-3 21 1 10 1675 20-2 349 2018 2226 20-6 I 1 126 1270 7'4 8 40 522 21-2 313 2223 3281 21'2 27 76 1963 8-0 o 781 22'2 322 1890 3119 22'2 2 21 2166 9-2 '5 2782 23-4 224 1855 721 23-4 O O 300 10-5 96 639 1 181 24'2 282 1288 1785 24-4 2 35 "'3 167 1077 2598 2 5'5 148 923 333 25'4 10 99 325 I2'3 189 1268 2651 26-2 165 1093 2969 26-5 27 390 848 13-2 156 I 101 2738 27'5 164 1 192 784 27'5 58 575 1 196 H-S 73 777 326 28-2 224 1396 2339 28-5 "3 870 1440 '5-5 26 3'5 29-1 246 '345 2701 29-2 119 8/4 I 100 16-2 38 253 21 IO 30-6 '53 1077 30-4 77 748 I7-3 i7 '75 1237 31-2 304 '344 2678 31-4 139 1019 48 18-3 3 213 2797 19-5 80 +17 1046 20-3 64 724 3109 21-3 131 713 1677 Feb. i -4 321 1492 1994 Apr. 1 4 '75 964 559 22'2 113 835 1161 2'5 217 '477 o 2-4 68 1069 65 23-2 134 995 1630 3-2 294 1905 1304 3'4 88 886 o 24-3 141 1216 888 4'4 287 2225 241 4'4 I 12 1091 270 25-3 168 1052 '3'7 5'5 335 1825 275 5'5 I2 9 1261 208 26^3 98 959 2486 6'2 3i3 1697 851 6-2 264 '445 399 2 *7 (98 831 2644) 7'5 258 1786 375 7'4 1 86 '477 284 28-3 98 702 2802 8'2 327 2353 860 8'2 210 2105 2 355 29-5 IO2 581 776 9'5 322 2076 1883 9-2 271 2613 1993 30 (129 I IOI 1635) 10-5 309 1808 1293 IO - I 430 3082 961 1I'2 1 80 1783 3188 11-5 306 2520 373 I2'5 265 1622 1540 I2'2 229 2445 969 Dec. i * J 5 6 1621 2493 I3-3 257 1612 2109 I3-3 206 2166 1619 2-3 218 1575 1632 '4'3 255 1850 1622 '4'5 95 1070 347 3'3 231 '477 895 15-2 293 2105 761 '5-5 70 612 278 4'5 239 '439 402 16-2 335 2591 '555 16-2 72 524 2037 5'5 2O2 1338 427 17-4 428 249 8 735 17-4 40 457 1301 6-3 1 5 6 1323 2540 18-5 272 2026 o 18-4 35 401 200 7'4 128 996 874 19-1 239 1870 1360 19-5 40 376 90 8-3 117 863 '843 2O'2 239 1299 395 2 20-4 59 443 inS 9-2 137 849 2177 2I- 4 158 918 1250 21-4 78 589 1802 10-3 I 5 6 956 '434 22'2 128 1051 2051 22-4 101 850 1859 11-3 I2 4 979 1719 23'5 77 671 1036 23'4 107 924 1670 12-3 9 6 793 908 Z 4'5 62 538 1329 24-2 83 789 820 13-2 118 699 '443 25-2 24 414 1849 25H 116 794 '839 14-4 94 583 2189 26-2 33 '95 1144 26-5 I 12 783 1175 '5'3 65 34 6 2096 27-2 53 283 2574 27'4 118 884 1238 16-5 64 456 SS 2 28-2 107 760 2952 28-4 190 1186 867 TOTAL PBO-IKCTKH AURAS <> -I-OTS ASP FACUL^S FOK KAI-II MAY IN THE YKAHS 1882-1885. Total L'roje. - >if Sim Spot* ami Kc \reu. Project^ Areu. Projected Areu. Projwted AreM. 1; Greenwu-li Greenwich Greenwich Time. Time, Urobrr. Wh-Ie 9| !.. F.u'ul;v (Jab < Spot*. Faculir. 1 .,,-.; , Whole pott .'.... ! ] Whole -! ! > h 1885 ' 1885 J 1885 d 188$ d Apr. 29-3 '97 1306 1526 June 24-4 ,64 2771 2675 Aug. 18-2 '7' 710 2664 Oct. 1 3-2 '5 in 1536 30-4 '43 1466 109; 25-3 III 2014 3438 19-5 '4* 626 2081 142 4 28 8 $ 26 (107 1783 8 5 l) 20-5 79 566 1027 'S'4 o 222 *7'4 97 263 21-5 7* 354 '57' ,64 759 28-4 207 1635 63' 21-5 58 353 200 17-2 5 '34 '59' My 1-4 199 '594 '95' 29-6 120 1726 436 23-2 82 477 1185 18-1 60 386 1580 *'4 '94 1693 1513 30-4 148 2107 883 24-6 47 555 1858 '9 - 4 58 74" 984 ,64 1700 1384 *5'5 37 518 907 20-5 73 7'6 "75 *'5 1801 2256 26-5 43 499 1082 21-3 9' 826 '557 5'3 3*5 1858 1094 *7'5 80 797 3'3 22-4 129 1064 1 176 6-5 8-4 9'4 10-5 11-4 *93 *'5 '9' 62 69 2261 2238 1763 1082 870 '*55 2092 1398 1290 639 266 .luly 1-5 2-4 3'5 4'5 5'3 2 5 2O2 20 5 *'3 334 2281 '993 1761 671 1679 1711 21 JO 1629 77 34l6 28-5 29-4 30 31-2 4 99 (198 *97 994 I2O2 ,483 1764 590 569 285) 1416 23-2 24-2 26-3 *7'4 28-4 '84 265 108 226 209 '*7 1299 1278 1363 '797 1667 '3'3 1521 S'9 *37 *354 2764 '349 12-4 '3 "5'4 ,6-4 19-4 20-5 62 (46 2Q 1 O *3 12 79 95 35' 615 4'9 **3 39 '7* 208 589 896 2030 1223 859) 494 768 580 453 596 1948 > 7'5 8'4 9'5 10-4 "4 I2'2 is;s i " - 310 '97 292 206 83 82 168 188 186 i - * 2141 2669 *397 '975 1640 '*44 8 9 7 '339 '54* iflflA '758 1 122 2365 2OI4 1804 3084 201 5 1798 Sept. 1-4 *'4 3 '4 4'5 5'4 6-4 7'3 '57 3'5 '47 93 '*4 57 81 67 1920 2 S 8, 1678 '*73 1178 735 55' 438 1938 '*35 85 300 868 '74* 887 *9'4 30-1 31-2 Nor. 1-4 3-1 140 201 73 7' 95 '*74 1307 1183 7*9 54* 545 1061 1840 1416 680 94 "77 21-6 22-5 *3'4 -4'4 *5 26-3 *7'4 28-5 29-4 30-4 362 45' 349 381 (379 377 221 128 7 5' 85 2431 *743 261; 2858 2686 *5'4 2009 1116 895 526 604 2889 1367 1790 2282 2382 *353 3*79 3969 *473 3'49 1 5 5 16-5 '7'5 18-2 19-6 20-6 21-5 22-5 *4'5 25-6 26-5 ' 53 '3' 250 430 161 '54 IO2 *34 1 86 205 88 I UUi 1688 '95' *'77 1709 1657 1588 1462 1508 1361 1046 086 1053 1694 1874 '733 2158 1096 7'4 1 170 1104 685 O7O 9'4 10-3 11-2 I2'2 I3-2 4-6 '5'4 16-6 17-2 18-5 19-2 196 229 '55 '94 128 9 I 96 '39 67 45 948 954 1187 '379 '33* 816 802 743 5*6 4'3 588 *44 1709 402 583 457 737 748 1990 1262 838 4'' R 7'' 8-1 9-1 lO'l in 13-2 14 i 93 75 7* 7 47 5* '*4 89 77 '*5 187 455 3*5 37* 3'4 228 355 7*8 564 627 89, 1 189 587 1408 94' 881 624 u u 1218 1613 1730 "49 J 27-4 28-4 t f\* t ''9 169 r 7 8 7 870 v / ** 1034 339* - ^ r\ *o-6 o 21-4 12 22-4 JI 188 406 *3' 804 454 5 5 '7'5 '97 212 230 1272 '534 1583 o 288 222 June i'4 3'4 100 ,46 162 1081 1526 '4'3 973 1854 1414 *9 5 30-5 3' - 5 5' 56 33 556 5 8l ) 1642 6 97 23-4 2 4 -6 *5'4 21 4 80 262 *45 754 347 966 18-4 19-2 20'l 22 9 |6 7 *'4 '594 '439 1072 543 1003 645 4'4 288 2063 1939 26-4 80 935 36, 21'S 104 7*6 53' 5 '4 '93 *45 444 27-1 239 1063 753 22'2 104 645 1281 6-2 575 2298 1625 28-5 121 95* 578 *3* 76 399 1418 7 '4 287 2187 1213 Aug. i -4 103 630 77 6 29-2 ,6 + 1032 "47 24-2 '5 217 1211 8-3 5'9 2686 1539 2-5 84 577 "3' 30-2 '47 709 1590 *5'* o 4S 9-2 49 2552 2327 3'* 5* 49' "57 263 3' 10-4 *95 *443 47* 4'4 18 3*7 583 17-5 o o 246 ,1-4 288 2195 284 5'5 65 559 1851 3 5* 4'* ,2-4 357 2375 2114 6-4 4 516 485 Oct. 1-4 69 79' 1288 29-1 4 *7 437 3-4 190 1915 645 7'5 103 8'7 3100 2'2 201 1048 2384 30-1 820 '4-5 163 1546 1602 8-4 38 1 190 3310 3 '4 121 1119 "49 5-5 188 181 i 2124 9-2 190 1281 1409 4-6 73 1123 367 16-4 3*4 2536 2260 10-5 209 1528 910 5'* 268 '45' 55 ,7-2 43 3029 2168 "'5 190 1623 2272 6-4 2O2 1472 36, Dec. 1-5 o '95 18-5 370 3434 661 12-4 126 1264 1462 7 '4 2l6 '473 44 2-4 77 "4 '9'5 381 3339 *56 '3'4 '5' 1130 970 8-2 *54 '395 1611 3-2 20 47 5*4 20-4 3*9 3980 656 '4'5 '*3 1017 639 9'4 999 69 4-6 o 5' 246 21-5 377 4483 222 109 800 707 I0'2 '4' 956 1967 5-3 ' 68 308 22-4 300 3921 941 \l\ 106 899 1670 I 1-2 48 769 2322 6-1 o *7 2 *3'4 400 354 *348 74 78 690 848 123 9* 445 1617 7-2 o o 445 312 TOTAL -PROJECTED AKEAS OF SUN SPOTS AND FACUL/E FOK EACH DAY IN THE YEARS 1882-1885. Total Projected Areas of Sun Spots and Faculae continued. Greenwich Civil Time. Projected Areas. Umbra. Whole Spots. Faculae Greenwich Civil Time. Projected Areas. Umbrae. Whole Spots. Faculje Greenwich Civil Time. Projected Areas. Umbra. Whole Spots. Faculae. Greenwich Civil Time. Projected Areas. Umbra. Whole Spots. Faculae. 1885 d Dec. 8-2 9-2 11-4 I2'2 13-2 3 4 25 33 49 o 28 5 2 148 259 373 657 683 121 812 852 919 1885 Dec. I4-2 !i-| 17-2 18-2 19-1 48 49 53 49 34 68 324 280 275 268 201 33 1216 o o 792 987 822 1885 d Dec. 2o'2 21-3 22'2 2 3'' 24-5 25-1 75 49 68 73 79 124 396 428 420 424 59' 711 827 2O2I 1801 1271 892 895 1885 Dec. 26-1 27-1 28-1 29-5 30-1 121 126 86 54 65 5 647 746 642 423 461 383 475 369 286 249 508 6,4 KOYAI. (>l!SKl;VAT()l,'V. GREENWICH. MEAN AREAS MK AN HELIOGRAPHIC LATITUDE 01 SUX SPOTS AND FACLL.K FOR EACH ROTATION OF THE SUN 1874 Al'KIL 'X TO 188(5 JANUARY 10 AX 1 1 >B EACH YEAR i BOM 1 H 7 4 1 8 8 .I. PHOTO-HELIOGRAPH ic RES S K 314 MEAN AREAS OF SUN SPOTS AND FACUL^E FRUM 1&74 APRIL 27 TO 1886 JANUARY 16. MEAN AREAS of SUN SPOTS and FACUL^E, as measured on PHOTOGRAPHS taken at the KOYAL OBSERVATORY, GREENWICH, at the OBSERVATORY of HARVARD COLLEGE, CAMBRIDGE, U.S.A., at the MELBOURNE OBSERVATORY, AUSTRALIA, at DEHRA DUN in INDIA, and at the ROYAL ALFRED OBSERVATORY, MAURITIUS, for each synodic ROTATION of the SUN, and for each YEAR, from 1874 April 27 to 1886 January 16. The Mean Amis have been formed by taking the Means of the Areas for each day of observation throughout each Rotation of the Sun and throughout each Year, the projected Areas being the Areas as measured on the photographs and expressed in miliionths of the Sun's apparent disk, and the Areas Corrected for Foreshortening being expressed in millionths of the Sun's visible hemisphere. The Rotations adopted in the following table (which is intended to supersede those for the years 1873-1885 printed in the Greenwich Observations for 1884 and 1885) correspond to the synodic rotation of the Sun, and the commencement of each is denned by the coincidence of the assumed prime meridian with the central meridian, the assumed prime meridian being that meridian which passed through the ascending node at mean noon on January i, 1854, and the assumed period of the Sun's sidereal rotation being 2 5 '3 8 days. The rotations adopted in the volumes of Greenwich Observations, 1877 to 1883, correspond, on the other hand, to the sidereal rotation of the Sun, the commencement of each being defined by the coincidence of the assumed prime meridian with the ascending node. The numeration of the rotations is in continuation of Carrington's series (Observations of Solar Spots made at RedJiill by R. C. Carrington, F.R.S.), No. I being the rotation commencing 1853 November 9. The dates of commencement of the rotations are given in GREENWICH CIVIL TIME, reckoning from midnight. No. of Rotation. Date of Commencement of each Rotation. No. of Days on which Photographs were taken. Mean of Daily Areas. Projected. Umbrae. Whole Spots. Faculae. Corrected for Foreshortening. Umbne. Whole Spots. Faculie 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 33 304 35 306 d 1874 April 27-56 May 2479 June 20-99 July 18-19 August 1 4-42 September 10-67 October 7-95 November 4-23 December 1-55 December 28-88 1875 January 25-21 February 21-55 March 20-87 April 17-16 May H'39 June IO-66 July 7-80 August 4-01 August 31 '2 6 September 27-51 October 24-81 November 21-11 December 18-42 1876 January 1476 February I i i i March 9-44 April 5-74 May 2-99 May 30-21 June 26-41 July 23-61 August J 9'^4 17 13 20 H 20 H '3 H 9 5 22 25 24 25 21 21 24 21 20 '9 "7 3 1 1 17 24 24 2 5 2 3 21 23 23 98 42 219 251 i5 149 56 107 35 60 116 95 S 30 109 24 25 2 '9 60 72 20 62 76 75 2 17 I '7 IO 833 335 1590 '399 767 1001 318 643 304 37 173 679 570 57' 217 593 156 136 22 137 338 4'5 158 406 428 373 28 72 6 98 56 87 39 185 921 1897 1138 749 791 629 226 1083 607 633 57 489 344 272 3'7 268 406 306 375 34 ,63 200 201 4'4 242 291 128 270 '59 222 64 28 140 198 80 H3 4 2 67 21 4' 29 87 63 60 '9 75 15 20 3 12 41 5' I I 44 48 5 2 i ii i 4 6 597 243 1069 "75 566 788 242 458 192 207 '55 53 395 417 137 416 97 117 21 87 2 3 6 323 9 322 271 264 "9 48 5 80 36 59 68 21 I II7I 2325 1452 1932 8 4 I 76 7 283 704 734 659 577 387 328 433 342 466 37i 387 398 218 209 283 483 304 34 140 287 .85 248 MEAN AI.-KA- 01 TKOM 1874 An:n. L'7 TO 1886 .IAV M .in Areas of Sun S| .IF .-uj.1 Faculn- rontitimd. MMB of Mir ANM. Nrt nf n. w. of KoUlion. Dt ion. O. OI J-MYR on win. d PiMtagrftpbi were tultt'ii. Corrected for FomhorUalng. Unibrw. Whole Spou. Fwuliv. Umbnt. Wbole SpU. F.rul*. 37 1876 Sept'-mber 16*09 20 42 220 i ; i *7 '45 186 308 her '3 '3 7 18 *9 '77 2; 1 28 177 3*' 309 i 9-67 16 *3 105 9' ll 310 mber 6-99 '3 5* 3'4 47 4' *33 5* 3" 187- January 3-32 *3 37 *79 129 28 205 161 3'* Jaii 30-66 '5 10 59 69 10 56 97 3'3 27-00 16 20 '4* '59 16 IOI 206 3'4 M.-in:h 26-31 '7 17 1 08 189 '4 85 *35 JS April 22-58 20 34 158 21 1 22 106 240 316 19-81 ll 3* 146 '45 '9 90 155 3'7 JlllK' |6'OX 20 6 *3 107 4 14 125 318 July 1322 3 10 66 2 6 73 3'9 9'43 1 1 5* 172 ii 54 '9' 320 8ptanb*r 5-68 it 21 98 >74 '4 73 '34 3*' October 2-95 . - > 5 I 4 54 3 4 58 3- 2 her 30-24 20 104 59* 225 71 *73 3*3 November 26-55 ll 1 66 69 18 99 69 3*4 l>ecember 2 3 '8 7 '9 O i 70 o X ll J2 ; 1878 January 2021 22 I 1 66 47 5 ll 30 Febnurv 1655 *7 '3 7' 94 7 39 March 15-88 *5 4 26 45 * 13 68 3*8 April 12-17 *5 o 5 O o 6 3*9 May 9-42 *7 *4 129 232 '5 81 203 33 June 5-63 *7 4 20 7* 4 *4 98 33' July 2-82 25 1 31 o o 3* 33* July 30-03 *S 9 o '4 333 August 26-27 28 9 87 84 '3 61 103 334 September 22-53 o 54 o 65 335 October 19-81 *7 9 48 67 6 34 336 mber 16-12 27 o X 28 o 3 34 337 : iiber '3'43 28 o I '5 ' 2 *5 338 1879 January 26 o 2 95 o 1 121 339 February 6'ii *5 o O '4 o O 5 34 M.irdi 5-44 28 o o 55 o O 34' April *3 18 IOI 158 10 66 199 34* April 29^01 *4 2 12 167 i 6 '43 343 May 26-23 *3 '5 o 1 1 344 Juiii- 22-44 22 *3 I2 9 207 '5 84 345 July '9'^4 *3 6 I 9 48 6 18 346 An.: 1 5-86 2O '9 99 '9 '4 I$J 347 September 1211 *3 7 *5 205 5 21 2l8 348 October 9-39 22 '9 113 i 60 ll 94 '95 349 *4 29 168 196 *3 '39 2 43 35 1 >. . ml'iT 2-99 Z; 12 68 *'7 - 204 35' I 'fix-mHor 30*32 26 67 34" 565 5* 270 35* 1880 Jantnry 26-66 *; 94 470 875 74 353 Frtir 23-00 *7 51 232 861 36 927 354 Man-h 21-32 26 35 '5' 4*4 *4 '07 355 April 17-60 17 94 46' 949 405 926 356 May '4'84 7 IOI 462 4 ~ 63 286 4-8 357 Jnn- 1 1-04 J 158 746 796 122 557 '77 358 July 8-24 *4 60 325 1109 49 1119 359 4'+5 206 993 849 14- 316 MEAN AREAS OF SUM SPOTS AND FACULA: FROM 1874 APRIL 27 TO 1886 JANUARY 16. Mean Areas of Sun Spots and Faculae continued. Mean of Daily Areas. No. pf Days No. of Rotation. Date of Commencement of each Rotation. on which Photographs Projected. Corrected for Foreshortening. were taken. Umbra. Whole Spots. FacuL-e. Umbra, Whole Spots. Faculse. 360 d 1880 August 31-69 26 275 1148 1051 207 896 1178 36l September 27-96 26 201 966 1005 146 734 1270 362 October 2 5' 2 5 2 7 79 371 647 5 231 739 363 November 21-56 22 189 979 1 126 '5' 759 '375 364 December 18-88 2 4 135 586 817 100 437 929 36? 1 88 1 January 15-21 2 7 260 1071 1586 187 772 1772 366 February 11-56 26 131 5'4 2542 1 06 420 2894 367 March io'88 27 239 "33 2138 1 60 760 22IO 368 April 7-18 27 '35 630 1490 93 475 1802 369 May 4-44 27 122 569 1401 93 424 1542 370 May 3 1 '65 2 3 '59 797 1836 "7 587 '973 37' June 2 7'85 2 4 223 I I 12 2254 161 803 2420 372 July 25-06 2 5 240 "33 1832 165 776 2015 373 Augvist 21-28 2 5 307 1569 1821 214 1088 21 l6 374 September 17 '54 27 154 828 1616 "3 612 1949 375 October 14-82 27 '55 832 1286 103 585 1497 376 November 1 1 ' 1 2 28 321 '595 1319 227 1142 1517 377 December 8-44 27 103 55' i ^ 16 78 434 '959 378 1882 January 477 22 89 508 1248 68 397 1416 379 February I 1 1 26 164 917 i599 118 677 '877 380 February 28-45 2 7 262 1325 '954 189 952 2031 38i March 27-76 2 7 437 2615 2820 3'3 '935 2907 382 April 2 4'3 26 429 2099 2 553 343 1688 2736 383 May 21-26 27 '43 790 1758 107 582 1880 384 June J 7'4^ 2 4 '37 734 2405 84 493 2298 385 July 14-66 23 109 658 2 344 82 495 2542 386 August 10-88 2 4 248 1 1 60 '947 182 859 1872 387 September 7-12 25 3 2 4 1514 2062 255 1202 2185 388 October 4-40 27 35 1592 1940 245 1296 2134 389 October 31-69 27 553 2664 2136 398 20l6 2424 39 November 28-00 28 88 589 '545 61 4 2I 1730 391 December 2 5 '3 2 26 225 1365 '933 161 966 2192 392 1883 January 21-66 25 175 1 1 06 1710 123 794 1792 393 February 18-00 26 64 43z 1402 44 308 '549 394 March '7 '3 3 28 222 '5'5 1348 '5' '73 1617 395 April 1 3 -62 26 163 1170 '355 105 755 1483 39 6 May 10-86 26 136 803 892 99 596 1031 397 June 7-07 27 335 2242 1222 224 1563 1499 39 8 July 4-27 2O 428 2765 2046 296 2037 2130 399 July 3 1 -47 2 5 98 625 I 3 66 /8 55' 1776 400 August 2 7'/i 23 394 2176 1324 278 1589 1647 401 September 23-97 27 337 1971 '749 253 1478 23" 402 October 21-26 27 361 2197 2060 248 1606 2469 43 November 17^56 25 2 33 1589 '893 180 1302 2268 404 December 14-88 24 310 2485 2720 220 1909 3151 405 1884 January 11-22 25 345 2392 2562 240 1716 2858 406 February 7-56 23 312 '937 2795 234 '434 3'54 47 March 5-89 25 249 1688 1693 168 nil 2168 408 April 2-19 25 291 2207 1879 210 1651 2157 409 April 2 9'45 26 21 I 1580 1425 '47 1184 1751 410 May 26-68 '9 '54 i73 1200 107 795 1602 411 June 22-88 '7 U 9 849 1188 83 661 1209 412 July 20-08 21 I2 5 939 1060 93 757 "5i 4'3 August 16-30 24 124 929 1203 89 646 1534 414 September 12-55 22 327 1991 1667 235 1477 2OIO MKAN AIIIAS OF rs AM- i KROM 1874 Anui. U7 TO 1886 10 Meun Areas nf Sun B] ;hi' "it tinted. "lit of each Botation. Rota: No. of Daya Mean of Daily Anea. on winch I'liotugraphi Projected. Corrected for FornhortMiing. rare taken. Umbra*. Whole Spota Umbnr. Whole SpoU. Facial*. 41; 1884 October 9-83 26 i- I 1076 1642 "5 760 20x9 416 November 6-13 26 99 742 1700 63 47 i 1988 4 1~ mber 3-44 26 '75 1241 1561 "7 . '93 s 41 ,> :ubi-r 3077 5 98 643 1756 69 473 1936 419 1885 January 27-11 27 264 1712 1396 '73 1178 1688 420 l-'ebrnary 25-45 28 '44 "33 1596 IOO 800 '937 421 March 22-76 i (' 1141 854 89 79' 1038 4" April 19-04 6 138 1140 '235 95 844 1507 423 16-27 27 *47 1789 '73' ,68 1270 2016 424 June 12-47 26 244 2432 1448 1 68 17'* 1817 .lulv 9-67 7 '4' 1170 1508 104 9'4 1829 426 August 5-89 26 118 95' 1x84 77 670 '49* 4-- ptan jer 2-13 M no 863 876 77 633 I IOO 428 m'''er 29-40 27 i '5 870 "79 93 666 1404 4*9 ober 26-70 *7 '32 891 1013 94 620 1 136 43 tuber 23-01 28 22 '42 589 '7 I2O 723 431 December 20-33 26 '35 936 842 90 654 975 The above Table supersedes the corresponding Tables given in the volumes of Greenwich Observations for 1884 and iss;. MKAN AREAS 01 SPOTS and FACULJJ for each YBAR from 1874 to 1885. The Mean Projected Areas are expressed in millionths of the Sun's apparent disk. The Mian Areas corrected for foreshortening are expressed in millionths of the Sun's visible hemisphere. Mean of Daily Areaa. No. cf Dava Year. mi whii'li Photographs were Projected. Corrected for Foreahorteniog. tak Utnbne. Whole Spots. Faoole. Umbra. Whole Spot*. Fuculr. 1874 '4' 121 820 826 84 604 994 1875 263 57 34 4*6 40 248 53 1876 2/1 3' '75 117 22 126 *57 1877 *3S 26 150 138 19 108 162 1878 347 6 34 62 4 22 67 1879 318 10 55 129 7 38 136 l88o 341 '24 588 813 91 440 921 l88l 348 196 946 1723 140 681 i $l 1882 343 248 1293 201; 188 1000 1883 34 25' 1600 1605 '75 "?4 1864 1884 315 208 1458 1688 148 1079 2034 1885 359 '45 "25 1251 i oo 807 1485 The M.-ans nf I >aily Areas for the Year 1874 refer to a period "f eight months, fnun 1874 April *7 to 1874 ntx-r 18. Many of the photographs taken at Greenwich during the early part of : "'74 do not show the Faculff with sufficient distinctness to allow of their measurement. The above TaM. supersedes the ruresponding Tables given in the volumes of Greenwich Observations for 1884 and 188;. 318 MEAN HELIOGRAPHIC LATITUDE OF SUN SPOTS FROM 1874 APRIL 27 TO 1886 JANUARY 16. MEAN HEUOGRAPHIC LATITUDE of SUN SPOTS, as measured on PHOTOGRAPHS taken at the ROYAL OBSERVATORY, GREENWICH, at the OBSERVATORY of HARVARD COLLEGE, CAMBRIDGE, U.S.A., at the MELBOURNE OBSERVATORY, AUSTRALIA, at DEHRA DUN in INDIA, and at the ROYAL ALFRED OBSERVATORY, MAURITIUS, for each synodic ROTATION of the SUN, and for each YEAR, from 1874 April 27 to 1886 January 16. The numbers given in the accompanying table have been formed as follows : The Heliographic Latitude of each Spot for each day has been multiplied by its Area (corrected for foreshortening), and the sum of the products, for Spots North of the Eqnator, lias been divided by the sum of the corresponding Areas to form Mean Heliographic Latitude of Spotted Area North of Equator ; similarly for Spots South of the Equator. In forming the Mean Heliographic Latitude of entire Spotted Area, the algebraic sum of the products for Spots North and South of the Equator has been divided by the sum of the Areas; and for the Mean Distance from the Equator for all Spots, the numerical sum of the products, without regard to the sign of the latitude, has been similarly divided. The mean Areas have been formed by dividing the sum of the Daily Areas (corrected for foreshortening) by the number of days of observation for each Rotation of the Sun and for each Year, and are expressed in millionths of the Sun's visible hemisphere. The dates of commencement of the Rotations are given in GREENWICH CIVIL TIME, reckoning from midnight. No. of Rotation Date of Commencement of each Rotation. No. of Days on which Photographs were taken. Spots North of the Equator. Mean of Daily Areas. Mean Heliographic Latitude. Spots South of the Equator. Mean of Daily Areas. Mean Heliographie Latitude. Mean Heliographie Latitude <>f entire Spotted Area. Mean Distance from Equator of all Spots. 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 296 2 97 298 299 300 301 302 33 34 305 306 307 1874 Apr. May June July Aug. Sept. Oct. Nov. Dec. Dec. 1875 Feb. Mar. Apr. May Juno July Aug. Aug. Sept. Oct. Nov. Dec. 1876 Jan. Feb. Mar. Apr. May May June July Aug. Sept. d 27-56 24-79 20-99 iS-ig 14-42 10-67 7-95 4-23 ''55 28-88 25-2I 21-55 20-87 17-16 H'39 10-60 7-80 4-0, 31-26 27-51 24-81 21'll 18-42 14-76 I I ' I 1 574 2-99 3O-2I 26-41 23-61 19-84 16-09 17 13 20 4 20 H 9 5 22 25 2 4 2 5 21 21 24 21 2O '9 '7 '3 1 1 17 24 2 4 2 5 2 3 21 23 2 3 '9 117 '59 6.3 861 140 43 56 214 163 128 130 373 '93 312 8 171 97 no '9 17 196 21 5 44 18 '94 9 o 2 23 4 o 2 8-06 I rig 12'Og 7-27 2-94 I I '06 9-5I 9-50 6-27 6-57 17-29 16-23 I3-39 9-38 10-37 6-96 IO'22 7-39 13-3 10-5 1 11-05 I2'OI IO-23 12-27 9-06 14-66 o'6o 6-12 lO'IO 11-40 481 84 457 3U 426 745 186 244 29 79 2 5 '57 202 I 06 129 H5 o I 3 69 40 302 279 2 53 70 10 48 3 57 32 59 H3 871 8-84 9'3 18-13 15-20 11-93 12-87 15-58 678 13-4 2 11-95 9-17 14-30 10-02 10-34 8-28 IO-30 16-29 8-2 5 7^9 8-66 9-86 12-51 13-04 8-64 10-68 I3-S4 0-66 7-30 8-95 1 1-03 5-97 - 5M-2 + 4' 2 9 + 3-07 + 0-48 10-62 10-68 - 7-66 - 3-86 + 4-38 i -08 + 8-73 - 0-77 + 4'47 - 9'iS 2'01 + 10-22 - 4H8 + 7-93 + 11-96 - 8-75 - 9-15 -11-56 + 8-46 0-83 -13-54 0-19 - 3-4 - 6-95 1 1-03 - 5-80 8-58 10-38 10-78 10-17 12-17 11-88 12-09 ' 2 '73 6-35 9-20 16-42 14-14 13-85 9'55 10-34 7'74 IO"22 7-40 I3'65 8 7 10-43 8-88 9-86 12-48 1278 13-06 10-78 I3-54 0-63 6-96 9-06 11-03 6-02 N IlKI.Im.KArillC I, AT! If I >K i>l TB I K. iM 1 S7-4 Al'KII. 27 TO 1886 .UNI \\;\ 1 1'. M.-.HI Beliographio 1 .iinu.le f Sun S].,.ts . M , of Dilv Mi 11 M ...:. of Daily phic Aretu. Utitu.lr. ATOM. Uti 308 d 1876 Oct. 13-37 '8 33 io : 49 1 44 1 1 1 6 - 7*'i7 1 1-04 309 Nov. 9-67 l6 '9 1-91 62 10-69 - 773 8-64 310 I.r. 6-99 13 *33 10-35 + 10-35 10-35 311 1877 Jan. 3-32 23 199 9'94 6 8-01 + 9'39 9-88 312 . 30-66 l$ 5* 9-16 4 7H8 + 8-08 9-05 3'3 Fell. 17-00 16 '4 7>6 86 10-48 - 7-9 IO-04 3' + Mar. 2- 17 2 0-40 83 '4'43 14-01 1403 515 A|-r. 22-58 20 6l 10-90 45 10-3* + 1-86 10-65 316 M;iy 19-81 i- '4 8-95 77 10-07 - 7-22 990 ji? June 16-02 10 4 10-31 10 12-80 ~ 57* I2-O3 318 July 13--- 7 4 12-31 2 12-04 + *'93 12-21 3'9 J. 9^3 '7 54 8-90 O + 8-90 8-90 320 ;-68 16 45 8-95 27 7'93 + *'64 8-57 3*' ' *9S '5 o 4 8-10 - 8-10 8-10 3" . 30-24 20 403 8-27 - 8-17 8-27 3*5 .. 26-55 18 o 99 10*24 10-24 10-24 3*4 1 >>. 23-87 19 2 7-50 o ... + 7-50 7-50 1878 J:lll. 20-21 22 16 7-65 i* 8-37 + 0-56 7-96 326 1655 *7 38 6-41 i 7-95 + 6-24 6-43 3*7 Mar. 15-88 *5 3 7-66 o + 7-66 7-66 3*8 Apr. 12-17 *5 . . . o ... 3*9 M:iy 9-42 *7 81 8-26 + 8-26 826 33 June 5-63 *7 ! 13-62 1 6-70 + '3"'7 '347 33' July 2-82 *5 ^i 15-30 ... + 15-30 15-30 33* July 30-03 *5 o ... 333 A tl;-. 2 ' 28 61 3-87 ... + 3-87 3 ; 87 334 Sept. 22-53 *7 o ... ... 335 Oct. 19-81 *7 34 10-50 ... + 10-50 10*50 336 Nov. 16" 12 *7 3 4"'4 o ... + 4''4 4''4 337 I'.-c. 13-43 28 o 2 '57 - '-57 ''57 338 1879 Jan. 977 26 o I *375 -*375 *375 339 Feb. 6-n *5 o ... ... 34 Mar. 5-44 28 o ... o 34' Apr. 1-75 23 o ... 66 20-81 20-81 10-81 34* Apr. 29-01 24 6 14-25 o +i4'*5 14-25 343 May 26-23 *3 o ... ... 344 June 22-44 22 3* 8 V 34 53 2665 -I3'47 '975 345 July 19-64 *3 4 9 '97 4 17-40 + 3-46 11-74 346 Aug. 15-86 M 73 27-86 o + 27-86 17*86 347 i. 12-11 *3 '5 24-64 6 23-11 -(-ii-oo 24-20 348 9-39 22 16 20-48 77 **'93 -'5-40 22-50 349 Nov. 5-68 *4 '3 30-46 127 21-94 -17-16 2271 35 1 ><>c. 2-99 *4 37 '9'77 -9'77 '977 35' Dec. 30-32 26 '43 21-38 i*7 15-68 + 3'9' 1869 352 1880 Jan. 26-66 *S 298 22-03 75 '7 '49 + 14-10 It'll 353 Feb. 23-00 7 87 19-92 93 26-03 - 3-87 23-0! 354 Mar. 21-32 26 60 17-90 47 21-83 + '4 6 1963 Apr. 17-60 27 44 23-46 i 28-10 +23-37 *3'47 356 May 14-84 27 281 14-68 4 21-19 +4''4 1478 357 June 11-04 23 87 23-39 470 22-16 +15-08 22-35 358 July 8-24 24 4 '773 41 20*10 359 Aug. 4'45 *5 6*7 1-98 103 18-06 +1375 1885 360 Aug. 31-69 26 |H *o-4" 57 8 '-44 ~ 3-99 18*52 361 Sept. 27-96 26 354 19-01 19-67 - 099 '9'35 362 ' 25-25 27 '*5 20-54 1 06 15-82 + 3-87 18*38 363 Xov. 21-56 21 486 20-88 *73 '3'7 + 8>3 18-33 364 I 't'C. 18-88 M 3'7 22--0 120 2 4'45 ~ 9'7 23-18 320 MEAN HELIOGRAPHIC LATITUDE OF SUN SPOTS FROM 1874 APRIL 27 TO 1886 JANUARY 16. Mean Heliographic Latitude of Sun Spots continued. Spots North of the Equator. Spots South of the Equator. No. Date of 1 No - of Days Mean Mean of' Rotation. Commencement of each Rotation. on which Photographs were taken. Mean of Daily Mean Heliographic Mean Mean of Daily Heliographic Heliographic Latitude of entire Spotted Area. Distance from Equator of all Spots. Areas. La ti tude. Areas. Latitude. d 365 1881 Jan. 15-21 27 47' I7 - 93 301 1 6-8 8 + 438 1752 366 Feb. 11-56 26 '95 18-65 225 19-32 - 1-72 19-01 367 Mar. 10-88 27 378 15-89 382 20-14 2-22 18-03 368 Apr. 7-18 ~7 2IO 12-48 265 18-02 - 4'53 15-57 369 May 4-44 27 149 16-91 275 18-72 - 6-l6 18-08 370 May 3 1 '65 23 292 19-01 295 14-88 + 2-04 16-86 371 June 27-85 24 523 I8'73 281 17-10 + 6-21 18-16 372 July 25-06 25 6 3 I 20-89 '45 17-26 + 1377 2O'2I 373 Aug. 21-28 25 847 18-47 241 2077 + 976 18-98 374 Sept. 17-54 27 507 17-80 105 17-89 + II-65 I7-8I 375 Oct. 14-82 27 444 16-61 141 18-13 + 8-21 16-98 376 Nov. 1 1 -i 2 28 886 16-14 256 19-61 + 8-13 16-91 377 Dec. 8-44 27 38i 23-00 52 2470 + 17-24 23-26 378 1882 Jan. 4-77 22 289 16-03 107 '9'59 + 6-40 I7-OO 379 Feb. i-n 26 34 10-94 337 l6'22 - 2-57 I3-57 380 Feb. 28-45 27 116 13-64 836 12-98 - 972 13-06 381 Mar. 27-76 27 339 14-61 1597 2 2 'O6 -15-76 2O'66 382 Apr. 24-03 26 652 18-32 i37 23-04 - 7'7 21'22 383 May 21-26 27 203 18-09 379 I5-88 - 4'3 16-65 384 June 17-46 24 247 15-66 246 I5-37 + 0-17 I5-52 385 July 14-66 2 3 328 14-82 1 66 14-04 + 5'n 14-36 386 Aug. 10-88 24 651 15-81 208 16-64 + 7'95 1 6 -oi 387 Sept. 7-12 25 566 12-68 636 22-14 - 575 17-68 388 Oct. 4'4 27 776 1 6-60 520 22-07 + i-io 18-79 389 Oct. 3 1 -69 27 1142 18-27 873 18-94 + 2-15 18-56 390 Nov. 28*00 28 213 14-77 208 14-19 + 0-47 14-48 391 Dec. 25-32 26 263 8-07 73 13-82 - 7-86 12-25 39 2 1883 Jan. 21-66 25 469 8-33 324 16-41 - 176 11-63 393 Feb. 1 8 -oo 26 '43 9-42 .65 13-42 '- 2-85 11-57 394 Mar. 17-33 28 363 12-16 710 14-40 - 5-41 13-64 395 Apr. 13-62 26 233 10-32 522 18-00 9-26 15-63 396 May 10-86 26 172 12-66 424 13-62 6-04 I3-35 397 June 7-07 27 545 10-46 1017 I5-37 - 6-35 13-66 39 8 July 4-27 20 360 10-69 1677 15-11 -10-55 ! 4"33 399 July 31-47 2) 78 13-48 473 13-67 9-81 13-64 400 Aug. 27-71 23 410 11-75 1179 17-14 - 9' 6 9 1575 401 Sept. 23-97 27 403 1 1-46 1075 12-77 - 6-16 12-42 402 Oct. 21-26 27 4l6 10-99 1 190 1 1-67 5-80 11-49 4 3 Nov. 17-56 25 44 14-87 862 ii "43 - 2-55 I 2 "60 404 Dec. 14-88 H 753 I2'I2 1 156 10-80 1-76 11-32 405 1884 Jan. 1 1 "22 25 932 10-6- 784 16-24 1-62 13-22 406 Feb. 7-56 23 859 lO'OI 575 13-28 + 0-67 II-32 407 Mar. 5-89 25 381 10-59 800 1 1-04 4-06 ID-go 408 Apr. 2-19 25 115 9-31 1536 11-67 10-21 11-50 409 Apr. 29-45 26 219 10-37 965 10-88 6-96 lO-jg 410 May 26-68 19 297 I I '/I 498 10-88 - 2 '44 Il'ig 411 June 22-88 '7 3i6 11-13 345 10-83 - Q-34 10-97 412 July 20-08 21 318 6-75 439 7-52 - i'53 7'2O 413 Aug. 16-30 24 416 9-57 231 13-01 + 1-51 io'8o 414 Sept. 12-55 1074 12-91 404 11-71 + 6-19 12-58 415 Oct. 9-83 26 219 12-94 54' 12-06 - 4-86 12-31 416 Nov. 6-13 26 188 8-03 283 8-36 - 1-81 8-23 417 Dec. 3-44 26 1577 8-ii 275 10-73 + 2-02 8-96 418 Dec. 30-77 25 IOO 772 373 1 1-16 - 7 -l6 10-43 419 1885 Jan. 27-11 27 298 4-72 880 12-21 - 7^2 10-31 420 Feb. 23-45 28 169 7'37 631 13-25 8-89 I2-OI 421 Mar. 22-76 2" 493 10-51 298 1573 + 0-6 1 12-58 HAi'iin- I.ATITI-IIK OF Si x Srnra KKOM 1874 Aniu. U'7 i" M.. in lluli<><-ni]>hir Latitude nf Sun Spots continued. Spota North of the Equator. >;...'. |o itt or the Equator. Date "1 No. of Day. KM Maan of each Kot.it i M 'HI will, li I'lmto^rapht were taken. M. .!. or Daily 1 Areaa. M. a Utitude. M..,, of Daily Areaa. Mean Hrlu>);rap}iic Latitude. Heliogri; Utitude of entire Spotted Area. !',... - A K>iuator oral! 8p 4" 4 1885 Apr. 19-04 26 363 11*99 480 10*86 I-OI H*SS 4*3 May 16-27 *7 4'9 12-76 8 5 I 12*23 - 3'9 12-40 4*4 June 12-47 26 686 10-58 1026 13*42 3*80 12-28 4*; July 9-67 *7 I? 9 - 34 6 9 7 13-13 - 779 12 23 \ 5-89 26 '75 9*83 496 11-44 - 5'9' t7 t. 2-13 28 178 10*23 455 10-80 - 4-89 10-64 Sept. 29-40 *7 188 7-86 478 12-64 - 6-87 11-30 4*9 Oct. 2670 *7 8 7 14-38 333 11-47 + '49 12-81 43 Nov. 23-01 28 106 15-11 4 11-45 + 11-98 14-68 43' l>e.-. 20-33 26 59 12-58 496 10-27 - 473 10-83 The above Table supersedes the corresponding Tables given in the volumes of Greenwich Observations for 1884 and 1885. > MKA* HKLIOGRAPHIC LATITUDE of SUN SPOTS for each YEAR from 1874 to 1885. Year. No. nf 1 lays on which Photograph* were taken. . Spota North of the Equator. Spots South of the Equator. 1 can Heliograph ic attitude or entire H-wtted Area. Mean Distance from Equator of all Spota. Mean of Daily Areaa. Mean Heliograp] Utitude. ic Mean of Daily Areaa. Mean Heliographic Latitude. l74 14' 263 9*03 34 12-19 - ! 93 10-81 263 45 I 2*OO 103 io- 1 1 + 2*81 11*22 1876 271 4 11-83 8' 10*87 - 377 11*17 1877 235 38 9-69 70 9'5 - *74 9 ' 5 8 1878 347 21 7*60 i 7*12 + 6'9 1879 318 1 1 21-14 27 22*32 - 9'34 21*96 1880 34' 269 19-99 171 19-10 + 479 19*64 1881 348 454 18-20 226 18*50 + 6-00 18*30 1882 343 44* 15-96 557 19*28 - 3 69 17*81 1883 34 339 10-99 815 13-92 - 6-60 13*06 35 478 10-65 60 1 11*74 - 1*8* 11*26 1885 359 280 10-54 526 12*43 - 4'44 11*77 The Means of Daily Areas, etc., for the Year 1874, refer to a period of eight months, from 1874 April 17 to 1874 1). . -ember 18. Tin above Table supersedes the corresponding Tables given in the volumes of Greenwich Observations for 1(84 and 1885. PaoTO-HELIOORAPHIC RESULTS, 1874-1886. UNIVERSITY OF CALIFORNIA LIBRARY BERKELEY Return to desk from which borrowed. This book is DUE on the last date stamped below. ASTRONOMY LIBKARV LD 21-100m-ll,'49(B7146sl6)476 701270 _ UNIVERSITY OF CALIFORNIA LIBRARY ROYAL OBSERVATORY, GREENWICH. PHOTO-HFLIOGRAPHIC RESULTS. 1874-1885.