UC-NRLF 
 
 173 
 
OF THE A 
 UNIVERSITY 
 OF * 
 
A 
 
 Department of Science and Art, t 
 London, S. W. 
 
 <h March /^ 2 
 
 / am directed by the Solar Physics 
 Committee to transmit the accompanying papers 
 for your information. 
 
 I am, Sir, 
 
 Your obedient Sen'ant, 
 FRANK REDE FOWKK, 
 
 Secretary to the ^olur /'/tysics Committee. 
 
SOLAR PHYSICS COMMITTEE^ 
 
 ' DEPARTMENT OF SCIENCE AND ART, 
 
 LONDON, S,W, 
 
 - ' ______ 
 
 MEASURES 
 
 OF 
 
 POSITIONS AND AREAS 
 
 OP 
 
 SUN SPOTS AND FACUL^E/- 
 
 ON 
 
 PHOTOGRAPHS 
 
 TAKEN AT 
 
 GREENWICH, DEHRA DUN, AND MELBOURNE; 
 
 WITH THE DEDUCED 
 
 HELIOGMPH1C LONGITUDES AND LATITUDES 
 
 1878-1881. 
 
 LONDON: 
 PRINTED FOR HER MAJESTY'S STATIONERY OFFICE, 
 
 BY EYliE A XI) SI'OTTISWOODE, 
 PRINTERS TO THE QUEEN'S MOST EXOKLLENT 1IAJE8TT. 
 
 1891. 
 
NOTICE. 
 
 ONE of the objects of the Solar Physics Committee since its appointment in 1879 has 
 been to obtain a complete daily record by photographs of the Sun's surface. A general 
 catalogue of existing solar photographs and drawings, extending from the year 1832 to 1877, 
 was drawn up by Professor Balfour Stewart and Dr. Warren de la Rue, and published as 
 an Appendix to the first Report. The Committee resolved that, as from the beginning of 
 1878 the records were more complete and continuous, they should be grouped in a separate 
 series. 
 
 Daily photographs of the Sun had already been commenced by order of the Government 
 of India, under the Surveyor-General at Dehra Dun, N.W. Provinces, the photographs being 
 transmitted to Mr. Lockyer for reduction. The continuity of the record, however, was 
 interrupted by the sudden death of Sergeant Meins, R.E., the operator who was sent from 
 this country after having been trained at Chatham and South Kensington. A successor 
 was subsequently appointed, and since that time there have been very few days on 
 which no photographs were taken if the Sun were visible. Still, in July and August in 
 each year the record was broken on account of the rainy season. 
 
 The Indian photographs are now being taken by C. F. Guthrie, under the direction of 
 J. Eccles, M.A., Deputy-Superintendent, Survey of India. 
 
 In order to attain their object, and still further reduce the gaps in the Greenwich and 
 Indian series, the Committee communicated with the Directors of the Observatories in the 
 Mauritius and Australia, and cordial co-operation was promised. 
 
 As a result of the communications, both Mr. Meldrum and Mr. Ellery announced their 
 intention of sending the negatives which were necessary to fill the gaps left in the 
 Greenwich-Indian series for measurement by the Solar Physics Committee. 
 
 Mr. Russell, the Government Astronomer at Sydney, also promised assistance, and 
 eventually sent 163 photographs, 146 of which were taken in 1881 and 17 in 1882. Of these 
 there are only five which were taken on days for which there are no other photographs. 
 The want of definition of the photographs prevented any satisfactory reductions being made, 
 and hence they have not been entered with the others. 
 
 The series of measures given in the present publication is the result of the reductions 
 of the photographs received from the observatories named for the years 18781881. Only 
 those photographs which fill gaps in the Greenwich series have been reduced. Of the Indian 
 photographs which fill gaps, there are 41 for the year 1878, 23 for 1879, 152 for 1880, and 
 160 for 1881. The Mauritius photographs for years previous to 1882 have no cross-wires, 
 and it was not possible to completely reduce them. 
 
 a 64893. 300. 1/92. Wt. 15560. A 2 
 
For the years 1878-81, 695 photographs were received from Melbourne. Of these four 
 fill gaps in 1878, 12 in 1879, 16 in 1880, and 10 in 1881. The reduction of these is included 
 in the tables which follow. 
 
 The Greenwich reductions (extracted from the volumes of Greenwich observations) are 
 interpolated for the sake of completeness. The sign " *" with a particular date means 
 that the reduction was made from an Indian photograph, while " f " refers to Melbourne 
 photographs. Where no such description is given the photographs were taken at Greenwich. 
 
 The groups of spots are numbered in the order of their appearance, the numbers being 
 those given in the Greenwich reductions. 
 
 When there is no number in the second column it is to be understood that there is 
 a Faeula unaccompanied by a Spot. The positions of Faculae relative to the Spots wifch 
 which they are associated are indicated by the letters n, s,p,f, c, denoting respectively north, 
 south, preceding, following, concentric. 
 
 The Mean Solar Time given in the first column is Greenwich Mean Solar Time. 
 A record of the absence of spots is given at the end. 
 
 The measurements and reductions have been made by Messrs. James, Lawrence, 
 Greening, Mills, Hill, Fowler, Porter, Richards, Me William, Baxandall, Coppen, and Gregory. 
 Mr. James has chiefly been employed as examiner and in the preparation of the copy for 
 the press. 
 
 J. NORMAN LOCKTER. 
 
 1892, Jan. 8. 
 
REDUCTION OF SOLAR PHOTOGRAPHS THROUGHOUT 1878-1881. 
 
 MEASURES of POSITIONS ami AREAS of SPOTS ami FACUL^E upon the SUN'S DISK on PHOTOGRAPHS taken in the YBAK 1878. 
 
 
 
 Dis- 
 
 
 MRLIOORAMIIC 
 
 Srors. 
 
 FACI i..i:. 
 
 
 
 Dis- 
 
 
 ill I.KM.K.U-IIIC- 
 
 SPOTS. 
 
 FACULA. 
 
 Mean 
 Solar 
 Time. 
 
 No. of 
 Group, 
 
 ami 
 Lt'ttfr 
 for 
 Spot. 
 
 tance 
 from 
 Centre 
 in 
 terms 
 of 
 Sun's 
 l!uiliii!>. 
 
 Position 
 Angle 
 from 
 Sun's 
 Axis. 
 
 
 
 
 Mean 
 
 Solar 
 Time. 
 
 No. of 
 Group, 
 and 
 Utter 
 for 
 Spot. 
 
 tance 
 from 
 Centre 
 in 
 terms 
 of 
 Sun's 
 Radius. 
 
 Position 
 Angle 
 from 
 Sun's 
 Axis. 
 
 
 
 
 !."!'L- : - 
 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBRA 
 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 \VIKI1.K 
 (or i-adi 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBRA 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 WHOLE 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 1878. 
 
 
 
 o 
 
 o 
 
 o 
 
 
 
 
 1878. 
 
 
 
 
 
 o 
 
 
 
 
 
 
 6 d -0 I 2 
 
 
 O'qoS 
 
 256-7 
 
 
 
 
 
 78 
 
 62 d '945 
 
 2690 
 
 0-288 
 
 3o8'7 
 
 i5o"5 
 
 + 3-3 
 
 7 
 
 23 
 
 
 
 
 0-892 
 
 2597 
 
 
 
 
 
 log 
 
 
 26gr 
 
 0-264 
 
 32 1-4 
 
 147-0 
 
 + 47 
 
 8 
 
 38 
 
 
 
 
 0-914 
 
 114-2 
 
 
 
 
 
 222 
 
 
 270 
 
 0709 
 
 81-8 
 
 g3-i 
 
 + 0-6 
 
 
 
 6 
 
 728/ 
 
 Jan. 7 
 
 
 
 
 
 
 
 
 (49) 
 
 Mar. 5 
 
 
 
 
 
 
 (5) 
 
 (6 7 ) 
 
 (728) 
 
 9-048 
 
 
 O-gSg 
 
 273-0 
 
 
 
 
 
 9 
 
 62-902 
 
 2690 
 
 0-291 
 
 3o8'4 
 
 i5o-5 
 
 + 3-3 
 
 3 
 
 33 
 
 
 Jan. 10 
 
 
 
 
 
 
 
 
 (9) 
 
 
 270 
 
 0-710 
 
 81-4 
 
 g3-o 
 
 -f o-g 
 
 o 
 
 10 
 
 5 7 o/ 
 
 
 
 
 
 
 
 
 
 
 Mar. 5 
 
 
 
 
 
 
 (3) 
 
 (43) 
 
 (570) 
 
 i5'g55 
 
 
 0-866 
 
 1047 
 
 
 
 
 
 80 
 
 
 
 
 
 
 
 
 
 
 
 
 0-896 
 
 78-7 
 
 
 
 
 
 264 
 
 63-629 
 
 2690 
 
 0-425 
 
 294'9 
 
 iSri 
 
 + 3-6 
 
 o 
 
 it 
 
 
 Jan. 17 
 
 
 
 
 
 
 
 
 (344) 
 
 
 270 
 
 0-588 
 
 78-5 
 
 93-5 
 
 + 0-8 
 
 2 
 
 ii 
 
 
 
 
 
 
 
 
 
 
 
 Mar. 6* 
 
 
 
 
 
 
 (2) 
 
 (29) 
 
 
 16-973 
 
 
 0-844 
 
 loo-S 
 
 
 
 
 
 4 52 
 
 
 
 
 
 
 
 
 
 
 
 
 o-8;3 
 
 78-2 
 
 
 
 
 
 499 
 
 65-890 
 
 
 0740 
 
 281-9 
 
 
 
 
 
 236 
 
 Jan. 1 7 
 
 
 
 
 
 
 
 
 (95 ) 
 
 
 
 o-663 
 
 260-5 
 
 
 
 
 
 178 
 
 
 
 
 
 
 
 
 
 
 Mar. 8* 
 
 
 
 
 
 
 
 
 (4H) 
 
 22-078 
 
 2660 
 
 O'3 I 2 
 
 3i6-i 
 
 328-2 
 
 + 7-6 
 
 32 
 
 50 
 
 
 
 
 
 
 
 
 
 
 
 
 2666 
 
 0-274 
 
 327-8 
 
 324-1 
 
 + 7'9 
 
 16 
 
 5 7 
 
 
 
 
 
 
 
 
 
 
 
 Jan. 23 
 
 
 
 
 
 
 (48) 
 
 (107) 
 
 
 66-727 
 
 
 0-888 
 
 279-9 
 
 
 
 
 
 215 
 
 
 
 
 
 
 
 
 
 
 
 
 o-85g 
 
 266-6 
 
 
 
 
 
 46 
 
 22-089 
 
 266 
 
 o-3i2 
 
 3i5-5 
 
 328-2 
 
 + 7-4 
 
 24 
 
 61 
 
 
 M ar. 9* 
 
 
 
 
 
 
 
 
 (261) 
 
 
 266* 
 
 0-273 
 
 327-5 
 
 324-0 
 
 + 7'8 
 
 '9 
 
 83 
 
 
 
 
 
 
 
 
 
 
 
 Jan. 23 
 
 
 
 
 
 
 (43) 
 
 (144) 
 
 
 68-806 
 
 2716 
 
 0-621 
 
 70-8 
 
 2 4 -3 
 
 + 5-g 
 
 2 
 
 18 
 
 
 
 
 
 
 
 
 
 
 
 Mar. n 
 
 
 
 
 
 
 (*) 
 
 (18) 
 
 
 23-687 
 
 266n 
 
 0-6 1 1 
 
 290-4 
 
 33o-8 
 
 + 77 
 
 7 
 
 77 
 
 
 
 
 
 
 
 
 
 
 
 
 2666 
 
 0-552 
 
 294-8 
 
 326-1 
 
 + 8-2 
 
 
 
 35 
 
 
 69-979 
 
 2710 
 
 0-371 
 
 48-1 
 
 28-7 
 
 + 7'3 
 
 3o 
 
 i3o 
 
 
 Jan. 25f 
 
 
 
 
 
 
 (27) 
 
 (112) 
 
 
 
 271-6 
 
 0-424 
 
 56-i 
 
 14-1 
 
 + 6-g 
 
 ii 
 
 40 
 
 
 
 
 
 
 
 
 
 
 
 Mar. 12 
 
 
 
 
 
 
 (41) 
 
 (70) 
 
 
 24'583 
 
 266 
 
 0-767 
 
 284-2 
 
 33ri 
 
 + 7'i 
 
 o 
 
 84 
 
 
 
 
 
 
 
 
 
 
 
 
 2666 
 
 0-700 
 
 288-2 
 
 325-2 
 
 + 8-5 
 
 o 
 
 20 
 
 
 70*003 
 
 2710 
 
 o-36g 
 
 48-3 
 
 28-4 
 
 + 7'3 
 
 22 
 
 104 
 
 
 Jan. 26| 
 
 
 
 
 
 
 (o) 
 
 (104) 
 
 
 
 2716 
 
 0-427 
 
 56-7 
 
 23-5 
 
 + 6-8 
 
 I I 
 
 6l 
 
 
 
 
 
 
 
 
 
 
 
 Mar. 12 
 
 
 
 
 
 
 (33) 
 
 (i 65) 
 
 
 38-040 
 
 267 
 
 0-730 
 
 265-7 
 
 152-5 
 
 + 7-6 
 
 o 
 
 i5 
 
 38oc 
 
 
 
 
 
 
 
 
 
 
 
 268 
 
 0-476 
 
 263-1 
 
 1 33'9 
 
 - 9' 
 
 o 
 
 21 
 
 
 70-8o3 
 
 2710 
 
 0-258 
 
 16-9 
 
 297 
 
 + 7' 
 
 '9 
 
 140 
 
 
 Feb. 8 
 
 
 
 
 
 
 (o) 
 
 (36) 
 
 (38o) 
 
 
 2716 
 
 o-3io 
 
 35-g 
 
 23'5 
 
 + 7'4 
 
 3 
 
 52 
 
 
 
 
 
 
 
 
 
 
 
 Mar. 1 3* 
 
 
 
 
 
 
 (22) 
 
 ('92) 
 
 
 43-786 
 
 
 0-870 
 
 82-7 
 
 
 
 
 
 282 
 
 
 
 
 
 
 
 
 
 
 Feb. 14 
 
 
 
 
 
 
 
 
 (282) 
 
 71-989 
 
 2710 
 
 o-33o 
 
 3i8-i 
 
 Sri 
 
 + 7'2 
 
 27 
 
 93 
 
 
 
 
 
 
 
 
 
 
 
 
 2710 
 
 0-289 
 
 327-1 
 
 27-4 
 
 + 6-9 
 
 O 
 
 18 
 
 
 Feb. 26 
 
 2681 
 
 0-427 
 
 281-4 
 
 258-3 
 
 - 17 
 
 o 
 
 4 
 
 
 
 2716 
 
 0-281 
 
 338'4 
 
 2 4 -3 
 
 + 8-0 
 
 
 
 22 
 
 
 
 
 
 
 
 
 
 
 
 Mar. 14 
 
 
 
 
 
 
 (27) 
 
 (133) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 56'736 
 
 2686 
 
 0-910 
 
 98-5 
 
 153-2 
 
 -107 
 
 
 
 8 
 
 3i5/ 
 
 72786 
 
 2710 
 
 0-473 
 
 3oo-g 
 
 3l-g 
 
 + 7'5 
 
 26 
 
 142 
 
 
 Feb. 27* 
 
 
 
 
 
 
 (o) 
 
 (8) 
 
 (3i5) 
 
 
 2710 
 
 0-421 
 
 304-3 
 
 28-2 
 
 + 7'o 
 
 '4 
 
 63 
 
 
 
 
 
 
 
 
 
 
 
 
 2716 
 
 0-387 
 
 3i4'3 
 
 24*0 
 
 + 8-8 
 
 II 
 
 82 
 
 
 62"oi3 
 
 2690 
 
 0-181 
 
 35q'l 
 
 H9'9 
 
 + 3-i 
 
 18 
 
 43 
 
 
 Mar. 1 5* 
 
 
 
 
 
 
 (50 
 
 (287) 
 
 
 
 2696 
 
 0-209 
 
 2'3 
 
 149-3 
 
 + 4'8 
 
 o 
 
 i3 
 
 
 
 
 
 
 
 
 
 
 
 
 2690 
 
 0-207 
 
 12-5 
 
 147-2 
 
 + 4'4 
 
 17 
 
 72 
 
 
 
 
 
 
 
 
 
 
 
 
 270 
 
 0-846 
 
 84-8 
 
 92-6 
 
 + 0-4 
 
 3 
 
 23 
 
 44/ 
 
 7 3'65 7 
 
 ijin 
 
 0-621 
 
 291-8 
 
 3i- 7 
 
 + 7'5 
 
 17 
 
 86 
 
 
 Mar. 4 
 
 
 
 
 
 
 (38) 
 
 (i5i) 
 
 (404) 
 
 
 2710 
 
 0-579 
 
 293-2 
 
 28-6 
 
 + 7-2 
 
 9 
 
 61 
 
 
 
 
 
 
 
 
 
 
 
 
 2716 
 
 0-028 
 
 3oo - i 
 
 23-7 
 
 + 9-0 
 
 5 
 
 67 
 
 
 
 
 
 
 
 
 
 
 
 Mar. 1 6* 
 
 
 
 
 
 
 (3i) 
 
 (214) 
 
 
 62*028 
 
 2690 
 
 0-181 
 
 357-9 
 
 i5o-o 
 
 + 3-i 
 
 20 
 
 5 4 
 
 
 
 
 
 
 
 
 
 \ T/ 
 
 
 
 269* 
 
 O'2l3 
 
 1-2 
 
 149-3 
 
 + 5-o 
 
 
 
 5 
 
 
 
 
 
 
 
 
 
 
 
 
 26gr 
 
 0-208 
 
 II'4 
 
 147-3 
 
 f 4'5 
 
 4 
 
 54 
 
 
 75-734 
 
 27ia 
 
 0-791 
 
 285-6 
 
 32-1 
 
 + 77 
 
 16 
 
 80 
 
 
 
 270 
 
 0-842 
 
 84-7 
 
 92-9 
 
 + o-5 
 
 4 
 
 18 
 
 35 7 / 
 
 
 2J lb 
 
 0-713 
 
 291-0 
 
 24-4 
 
 + 9'5 
 
 o 
 
 6 
 
 
 Mar. 4 
 
 
 
 
 
 
 (28) 
 
 (i3i) 
 
 (35 7 ) 
 
 Mar. 1 8* 
 
 
 
 
 
 
 (16) 
 
 (86) 
 
 
 Indian photo. f Melbourne photo. The Areas of Spots and Facnls are expressed in Millionth! of the Sun'i viiible Hemisphere. 
 
KEDUCTION OF SOLAR PHOTOGRAPHS THROUGHOUT 1878-1881. 
 
 MEASURES of POSITIONS and AREAS of SPOTS and FACUL.*: upon the SUN'S DISK on PHOTOGRAPHS taken in the YEAR 1878 continued. 
 
 
 
 Dis- 
 
 
 HELIOGKAPHJC 
 
 SPOTS. 
 
 FACUL^E. 
 
 
 
 Dis- 
 
 
 HBLIOGRAPUIC 
 
 SPOTS. 
 
 FACUL*. 
 
 Mean 
 Solar 
 Time. 
 
 No. of 
 Group, 
 and 
 Letter 
 for 
 Spot. 
 
 tance 
 from 
 Centre 
 in 
 terms 
 of 
 Sun's 
 Radius. 
 
 Position 
 Angle 
 from 
 
 Sun's 
 Axis. 
 
 
 
 
 Mean 
 Solar 
 Time. 
 
 No. of 
 Group, 
 and 
 Letter 
 for 
 Spot. 
 
 tance 
 from 
 Centre 
 in 
 terms 
 of 
 Sun's 
 Liadius. 
 
 Position 
 Angle 
 from 
 Sun's 
 Axis. 
 
 
 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBRA 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 WHOLE 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBRA 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 WHOLE 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 1878. 
 
 
 
 o 
 
 o 
 
 
 
 
 
 
 1878. 
 
 
 
 o 
 
 o 
 
 o 
 
 
 
 
 76 d '636 
 
 
 0*945 
 
 282-3 
 
 
 
 
 
 525 
 
 l5o d -588 
 
 2720 
 
 0-238 
 
 3oo-3 
 
 72-0 
 
 + 6-4 
 
 O 
 
 20 
 
 
 Mar. 19* 
 
 
 
 
 
 
 
 
 (525) 
 
 
 2726 
 
 0-184 
 
 342-4 
 
 63-3 
 
 + 9-6 
 
 3 4 
 
 108 
 
 
 
 
 
 
 
 
 
 
 
 
 2726 
 
 0-162 
 
 346-8 
 
 62-2 
 
 + 8-5 
 
 20 
 
 "4 
 
 
 86-8i3 
 
 
 0-960 
 
 283-0 
 
 
 
 
 
 575 
 
 
 2 7 3 
 
 0-834 
 
 83-8 
 
 4-0 
 
 + 4'9 
 
 O 
 
 12 
 
 
 Mar. 29* 
 
 
 
 
 
 
 
 
 (575) 
 
 June i f 
 
 
 
 
 
 
 (54) 
 
 (25 4 ) 
 
 
 91775 
 
 
 0-960 
 
 787 
 
 
 
 
 
 256 
 
 151-780 
 
 2720 
 
 0-478 
 
 284-7 
 
 7**9 
 
 + 6-6 
 
 2 
 
 H 
 
 
 Apr. 3* 
 
 
 
 
 
 
 
 
 (256) 
 
 
 2J2l> 
 
 0-364 
 
 296-6 
 
 63-5 
 
 + 9'' 
 
 '9 
 
 i5g 
 
 
 
 
 
 
 
 
 
 
 
 
 2 7 3 
 
 0-638 
 
 82-4 
 
 5-i 
 
 + 4-6 
 
 2 
 
 12 
 
 33l/ 
 
 93-681 
 
 271 
 
 073o 
 
 83-3 
 
 46-0 
 
 + 0-6 
 
 O 
 
 13 
 
 
 June 2* 
 
 
 
 
 
 
 (23) 
 
 085) 
 
 (33 1) 
 
 
 
 0-883 
 
 76-3 
 
 
 
 
 
 356 
 
 
 
 
 
 
 
 
 
 
 Apr. 5* 
 
 
 
 
 
 
 (o) 
 
 (13) 
 
 (356) 
 
 102-785 
 
 2720 
 
 0-667 
 
 280-9 
 
 72*0 
 
 + 7'o 
 
 3 
 
 6 
 
 
 
 
 
 
 
 
 
 
 
 
 ijlb 
 
 0-570 
 
 286-7 
 
 64-3 
 
 + 9'2 
 
 22 
 
 81 
 
 
 102-768 
 
 
 0-892 
 
 286-0 
 
 
 
 
 
 143 
 
 
 2 7 3 
 
 0-444 
 
 787 
 
 5-1 
 
 + 4'8 
 
 3 
 
 8 
 
 
 Apr. 14* 
 
 
 
 
 
 
 
 
 ('43) 
 
 June 3* 
 
 
 
 
 
 
 (28) 
 
 (95) 
 
 
 128-981 
 
 
 0-852 
 
 96-3 
 
 
 
 
 
 112 
 
 June 4 
 
 272 
 
 0-763 
 
 281-4 
 
 64-7 
 
 + 8-6 
 
 9 
 
 52 
 
 
 May 10 
 
 
 
 
 
 
 
 
 (112) 
 
 
 
 
 
 
 
 
 
 
 129-016 
 
 
 0-860 
 
 96-3 
 
 
 
 
 
 1 68 
 
 154-589 
 
 272 
 
 o-85i 
 
 279-1 
 
 6 4'9 
 
 + 77 
 
 
 
 9 
 
 1741 s 
 
 May 10 
 
 
 
 
 
 
 
 
 ('08) 
 
 June 5f 
 
 
 
 
 
 
 (o) 
 
 (9) 
 
 (1740 
 
 145-962 
 
 2720 
 2726 
 
 0-795 
 0-885 
 
 82-4 
 79*9 
 
 69-1 
 59-7 
 
 4- 5- 4 
 + 8-5 
 
 i3 
 
 5 4 
 
 60 
 
 232 
 
 Siosp 
 
 i56'oo5 
 June 6 
 
 272 
 
 0-978 
 
 279-9 
 
 65- 9 
 
 + 97 
 
 
 
 (o) 
 
 27 
 (27) 
 
 656* 
 (656) 
 
 May 27 
 
 
 
 
 
 
 (67) 
 
 (292) 
 
 (810) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 169-95 1 
 
 274 
 
 0-747 
 
 260-4 
 
 343-8 
 
 - 6-7 
 
 o 
 
 '4 
 
 
 146-1 10 
 
 2720 
 
 0-773 
 
 82-0 
 
 69-2 
 
 + 5-6 
 
 '7 
 
 55 
 
 
 June 10 
 
 
 
 
 
 
 (o) 
 
 04) 
 
 
 May 27 
 
 2726 
 
 0-871 
 
 797 
 
 59'5 
 
 + 8-5 
 
 48 
 (65) 
 
 214 
 
 (269) 
 
 (85i) 
 
 162-017 
 
 
 0-968 
 
 263-3 
 
 
 
 
 
 200 
 
 
 
 
 
 
 
 
 
 
 June 12 
 
 
 
 
 
 
 
 
 (200) 
 
 146-628 
 
 2 7 2a 
 
 0-684 
 
 80-6 
 
 69*9 
 
 + 5- 7 
 
 
 
 67 
 
 
 170-906 
 
 
 0-90 5 
 
 66-0 
 
 
 
 
 
 2 7 8 
 
 
 272* 
 
 797 
 
 78-3 
 
 60-4 
 
 + 8-8 
 
 4 5 
 
 284 
 
 58oc 
 
 June 21 
 
 
 
 
 
 
 
 
 (2 7 8) 
 
 May 28* 
 
 
 
 
 
 
 (45) 
 
 (35 1 ) 
 
 (58o) 
 
 
 
 
 
 
 
 
 
 
 J 
 
 
 
 
 
 
 
 
 
 171-896 
 
 
 0-788 
 
 62-3 
 
 
 
 
 
 1 3 7 
 
 
 
 
 
 
 
 
 
 
 
 
 o-go3 
 
 85-2 
 
 
 
 
 
 425 
 
 147-637 
 
 2720 
 
 0-493 
 
 76-8 
 
 7 0-3 
 
 + 5-7 
 
 i3 
 
 84 
 
 
 June 22 
 
 
 
 
 
 
 
 
 (562) 
 
 May 29* 
 
 2726 
 
 0-637 
 
 74'9 
 
 60-7 
 
 + 8-9 
 
 5o 
 (63) 
 
 3i8 
 (402) 
 
 6i3c 
 (6i3) 
 
 175-928 
 
 275* 
 
 0-689 
 o'-653 
 
 287-9 
 2877 
 
 126-9 
 124-2 
 
 + 14-0 
 
 o 
 4 
 
 20 
 20 
 
 
 
 
 
 
 
 
 
 
 
 
 
 0-970 
 
 8i-3 
 
 
 
 
 
 86 
 
 148-616 
 
 2720 
 
 0-287 
 
 67-2 
 
 707 
 
 + 5- 7 
 
 8 
 
 5g 
 
 
 June 26 
 
 
 
 
 
 
 (4) 
 
 (40) 
 
 (86) 
 
 
 2726 
 
 0-448 
 o-qSq 
 
 69-3 
 88-1 
 
 61-1 
 
 + 8-5 
 
 38 
 
 213 
 
 200 
 
 176-103 
 
 2750 
 
 0-726 
 
 287-3 
 
 127-8 
 
 + 14-2 
 
 12 
 
 46 
 
 
 May 3o* 
 
 
 y y 
 
 
 
 
 (46) 
 
 (272) 
 
 (200) 
 
 
 2 7 56 
 
 0-684 
 o-g63 
 
 287-0 
 8i-3 
 
 124-4 
 
 + i3- 4 
 
 7 
 
 25 
 
 1 36 
 
 
 
 
 
 
 
 
 
 
 June 26 
 
 
 
 
 
 
 09) 
 
 (70 
 
 ('36) 
 
 149-910 
 
 2720 
 2726 
 273 
 
 O'l32 
 O'2II 
 
 o-gio 
 
 341-8 
 35-5 
 85-o 
 
 61-9 
 
 3'9 
 
 -f 6-6 
 
 7 
 61 
 
 o 
 
 44 
 240 
 
 20 
 
 528 c 
 
 176-900 
 
 2 7 5a 
 2756 
 
 0-843 
 
 o-797 
 
 285-1 
 285-1 
 
 128-6 
 123-g 
 
 + 14-1 
 + I3-6 
 
 7 
 24 
 
 45 
 
 102 
 
 i8oc 
 
 May 3 1 
 
 / 
 
 
 
 
 
 (68) 
 
 (3o 4 ) 
 
 (528) 
 
 June 27 
 
 
 o-gio 
 
 8i-5 
 
 
 
 (3i) 
 
 ('47) 
 
 140 
 
 (320) 
 
 149-929 
 
 2726 
 
 o-i36 
 
 O'2I I 
 
 341-6 
 35-4 
 
 71-2 
 61-6 
 
 + 6-9 
 + 9'3 
 
 8 
 46 
 
 32 
 
 238 
 
 
 177-101 
 
 2760 
 2756 
 
 0-873 
 0-823 
 
 284-4 
 284-4 
 
 '29'4 
 i23-g 
 
 + I3-8 
 + I3-3 
 
 n 
 
 29 
 
 68 
 "9 
 
 322 C 
 
 May 31 
 
 / 
 
 2 7 3 
 
 0-914 
 
 84-8 
 
 3-o 
 
 
 o 
 (54) 
 
 6 
 (276) 
 
 583 r 
 (583) 
 
 June 27 
 
 
 O'8g2 
 
 8r8 
 
 
 
 (40) 
 
 ('87) 
 
 118 
 
 (44) 
 
 * Indian photo. The Areas of Spots and Faculae are expressed in Millionths of the Sun's visible Hemisphere. t Melbourne photo. 
 
REDUCTION OF SOLAR PHOTOGRAPHS THROUGHOUT 1878-1881. 
 
 MEASURES of POSITIONS and AREAS of SPOTS and FACUL^E upon the SUN'S DISK on PHOTOGRAPHS taken in the YEAH 1878 continued. 
 
 
 
 Dis- 
 
 
 HELIOORAPHIC 
 
 SPOTS. 
 
 FACUL*. 
 
 
 
 Dis- 
 
 
 HKLIOOKAPHIO 
 
 SPOTS. 
 
 FAOULJC. 
 
 
 No. of 
 
 tance 
 ^L. 
 
 . . 
 
 
 
 
 
 No. of 
 
 tance 
 
 g 
 
 
 
 
 
 Mean 
 Solar 
 Time. 
 
 Group, 
 and 
 Letter 
 for 
 Spot. 
 
 rrom 
 Centre 
 in 
 terms 
 of 
 Sun's 
 Radius 
 
 Position 
 Angle 
 from 
 Sun's 
 Axis. 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBRA 
 fur each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 WHOLE 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 Mean 
 Solar 
 Time. 
 
 Group 
 and 
 Letter 
 for 
 Spot. 
 
 from 
 Centre 
 in 
 terms 
 of 
 Sun's 
 Radius 
 
 Position 
 Angle 
 from 
 Sun's 
 Axis. 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBRA 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 WHOLE 
 for each 
 Spof 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 1878. 
 
 
 
 o 
 
 o 
 
 
 
 
 
 
 1878. 
 
 
 
 o 
 
 o 
 
 
 
 
 
 
 I77 d 8 97 
 
 275a 
 
 O'gSo 
 
 283-4 
 
 i3o-2 
 
 + 13-5 
 
 29 
 
 130 
 
 176 c 
 
 244^027 
 
 277 
 
 0-978 
 
 88-2 
 
 186-0 
 
 + 3-3 
 
 23 
 
 146 
 
 i47y 
 
 
 275i 
 
 o-gi8 
 
 283-3 
 
 124*9 
 
 + 13-3 
 
 17 
 
 93 
 
 
 Sept. 2 
 
 
 
 
 
 
 (23) 
 
 (146) 
 
 (147) 
 
 
 2 7 5r 
 
 0-904 
 
 282-8 
 
 123-0 
 
 + 12-8 
 
 15 
 
 85 
 
 
 
 
 
 
 
 
 
 
 
 
 
 0-787 
 
 81-7 
 
 
 
 
 
 IO2 
 
 
 
 
 
 
 
 
 
 
 June 28 
 
 
 '947 
 
 
 
 
 (61) 
 
 (3o8) 
 
 (3 9 2 4 ) 
 
 244-077 
 Sept. 2 
 
 277 
 
 0-973 
 
 87-6 
 
 186-6 
 
 + 4-o 
 
 (24) 
 
 1 36 
 (136) 
 
 u5/ 
 (ii5) 
 
 178-106 
 
 275a 
 
 0-964 
 o-g32 
 
 284-0 
 284-1 
 
 i3o-3 
 124-3 
 
 + IO 
 + 14-' 
 
 18 
 18 
 
 '59 
 
 128 c 
 
 244'949 
 Sept. 3 
 
 277 
 
 0*910 
 
 89-8 
 
 186-4 
 
 + 3-3 
 
 34 
 (34) 
 
 127 
 (127) 
 
 298 nf 
 (298) 
 
 
 2750 
 
 o-g22 
 
 283-4 
 
 122-8 
 
 + i3'4 
 
 ii 
 
 56 
 
 
 
 
 
 
 
 
 
 
 
 
 
 0-761 
 
 80-8 
 
 
 
 
 
 57 
 
 
 
 
 
 
 
 
 
 
 June 28 
 
 
 0-929 
 
 99'8 
 
 
 
 (47) 
 
 (246) 
 
 1 20 
 
 (3o5) 
 
 245-1 1 5 
 Sept. 3 
 
 277 
 
 0*887 
 
 89-4 
 
 187-2 
 
 + 3-9 
 
 26 
 (26) 
 
 141 
 (HO 
 
 283 nf 
 (283) 
 
 178-948 
 June 29 
 
 275c 
 
 0-980 
 
 283-1 
 
 123-2 
 
 -l-i 3'4 
 
 i5 
 (IS) 
 
 68 
 (68) 
 
 (W 
 
 245-905 
 Sept. 4 
 
 277 
 
 0*794 
 
 90-3 
 
 187-2 
 
 + 4'2 
 
 3i 
 
 1 65 
 
 (65) 
 
 229 / 
 (229) 
 
 179-067 
 June 29 
 
 2 7 5c 
 
 0-981 
 
 282-9 
 
 122-0 
 
 + i3-2 
 
 
 
 (o) 
 
 I2O 
 (120) 
 
 61 c 
 (61) 
 
 248-007 
 Sept. 6 
 
 277 
 
 0-413 
 
 96-4 
 
 187-2 
 
 + 4-o 
 
 43 
 
 (43) 
 
 I 4 5 
 (i 4 5) 
 
 
 igS-giS 
 July 1 6 
 
 
 0-778 
 
 76-8 
 
 
 
 
 
 368 
 (368) 
 
 248-079 
 Sept. 6 
 
 277 
 
 0-399 
 
 97-0 
 
 187-3 
 
 + 3-g 
 
 35 
 (35) 
 
 i38 
 (,38) 
 
 
 196*1 1 1 
 
 
 0-768 
 
 78-7 
 
 
 
 
 
 33g 
 
 248-893 
 
 277 
 
 0-218 
 
 104-1 
 
 187-6 
 
 + 4-1 
 
 33 
 
 148 
 
 
 July 16 
 
 
 
 
 
 
 
 
 (33g) 
 
 Sept. 7 
 
 
 
 
 
 
 (33) 
 
 (148) 
 
 
 196-910 
 
 
 0-967 
 
 75-o 
 
 
 
 
 
 1 20 
 
 249-781 
 
 277 
 
 0-060 
 
 I79'3 
 
 188-1 
 
 -I- 3-8 
 
 35 
 
 178 
 
 
 July 17 
 
 
 
 
 
 
 
 
 (120) 
 
 Sept. 8* 
 
 
 
 
 
 
 (35) 
 
 (178) 
 
 
 197-115 
 
 
 0-940 
 
 76-5 
 
 
 
 
 
 u5 
 
 25ro6o 
 
 277 
 
 0-299 
 
 258-1 
 
 188-1 
 
 + 3- 4 
 
 27 
 
 i3g 
 
 
 July 17 
 
 
 
 
 
 
 
 
 (ii5) 
 
 Sept. 9 
 
 
 
 
 
 
 (27) 
 
 03g) 
 
 
 2o5-go6 
 
 276 
 
 o-5go 
 
 288-6 
 
 83-2 
 
 + I5-3 
 
 3 
 
 II 
 
 
 252-005 
 
 277 
 
 o- 49 8 
 
 265-9 
 
 188-4 
 
 + 4-3 
 
 34 
 
 148 
 
 
 
 
 0-864 
 
 91-7 
 
 
 
 
 
 267 
 
 
 
 0*963 
 
 717 
 
 
 
 
 
 94 
 
 July 26 
 
 
 
 
 
 
 (3) 
 
 (II) 
 
 (267) 
 
 Sept 10 
 
 
 
 
 
 
 (34) 
 
 (148) 
 
 (94) 
 
 206*999 
 
 
 o-g 4 7 
 
 67-5 
 
 
 
 
 
 5 4 
 
 202-117 
 
 277 
 
 0-525 
 
 265-5 
 
 1887 
 
 + 3-8 
 
 3o 
 
 142 
 
 
 July 27 
 
 
 
 
 
 
 
 
 (54) 
 
 
 
 0-967 
 
 7 i-3 
 
 
 
 
 
 227 
 
 
 
 
 
 
 
 
 
 
 Sept. 10 
 
 
 
 
 
 
 (3o) 
 
 (142) 
 
 (227) 
 
 207-021 
 
 
 0-948 
 
 68-0 
 
 
 
 
 
 5 4 
 
 
 
 
 
 
 
 
 
 
 July 27 
 
 
 
 
 
 
 
 
 (54) 
 
 262-907 
 
 277 
 
 0-671 
 
 267-4 
 
 188-8 
 
 + 3-6 
 
 27 
 
 ill 
 
 
 216-934 
 Aug. 6 
 
 
 0-961 
 
 87-2 
 
 
 
 
 
 89 
 (89) 
 
 Sept. 1 1 
 
 
 0-916 
 
 70-2 
 
 
 
 (27) 
 
 0.8) 
 
 298 
 (298) 
 
 
 
 
 
 
 
 
 
 
 253-ogi 
 
 277 
 
 0-707 
 
 268*8 
 
 i8g*3 
 
 + 4*3 
 
 3 4 
 
 172 
 
 
 217-088 
 
 
 0-960 
 
 87-2 
 
 
 
 
 
 190 
 
 
 
 o-goi 
 
 72*3 
 
 
 
 
 
 480 
 
 Aug. 6 
 
 
 
 
 
 
 
 
 (9) 
 
 Sept. 1 1 
 
 
 
 
 
 
 (34) 
 
 (172) 
 
 ( 4 85) 
 
 217-890 
 
 
 o-8g3 
 
 86-7 
 
 
 
 
 
 46 
 
 253-8gg 
 
 277 
 
 0-824 
 
 270-1 
 
 189-2 
 
 -f 4*2 
 
 32 
 
 126 
 
 H6*/ 
 
 Aug. 7 
 
 
 
 
 
 
 
 
 (46) 
 
 
 
 o*go3 
 
 289*5 
 
 
 
 
 
 431 
 
 
 
 
 
 
 
 
 
 
 
 
 0-819 
 
 70*3 
 
 
 
 
 
 207 
 
 2 1 8- 1 04 
 
 
 0-860 
 
 82-2 
 
 
 
 
 
 149 
 
 Sept. 12 
 
 
 
 
 
 
 (32) 
 
 (126) 
 
 (784) 
 
 Aug. 7 
 
 
 
 
 
 
 
 
 (H9) 
 
 
 
 
 
 
 
 
 
 
 226-990 
 Aug. 1 6 
 
 
 o-g2q 
 
 226-0 
 
 
 
 
 
 IOI 
 (101) 
 
 Sept. 1 3 
 
 277 
 
 0-937 
 0-919 
 
 271*6 
 291*5 
 
 190*1 
 
 4' 
 
 23 
 (23) 
 
 49 
 (49) 
 
 47 */ 
 229 
 (636) 
 
 * Indian photo. The Areas of Spots and Faculas are exprsssed in Millionths of the Sun's visible Hemisphere. 
 
REDUCTION OF SOLAR PHOTOGRAPHS THROUGHOUT 1878-1881. 
 
 MEASURES of POSITIONS and AKEAS of SPOTS and FACULS upon the SUN'S DISK on PHOTOGRAPHS taken in the YEAR 1878 continued. 
 
 
 
 Dis- 
 
 
 HEMOOHAPHIC 
 
 SPOTS. 
 
 FACCL.S:. 
 
 
 
 Dis- 
 
 
 HELIOGRAPHIC 
 
 SPOTS. 
 
 FACUL^E. 
 
 Mean ' 
 Solar 
 Time. 
 
 No. of 
 Sroup, 
 and 
 Letter 
 for 
 Spot. 
 
 tance 
 from 
 Centre 
 in 
 terms 
 of 
 Sun's 
 iadius. 
 
 Position 
 Angle 
 from 
 Sun's 
 Axis. 
 
 
 
 
 Mean < 
 Solar 
 Time. 
 
 So. of 
 Jroup, 
 and 
 Letter 
 for 
 Spot. 
 
 tance 
 from 
 Centre 
 in 
 terms 
 of 
 Sun's 
 iiulius. 
 
 Position 
 Angle 
 from 
 Sun's 
 Axis. 
 
 
 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 JMBRA 1 
 for each 
 Spot 
 (and for 
 Day). . 
 
 Area of 
 IVHOLE 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 Longi- 
 tude. 
 
 Lati- ' 
 tude. 
 
 Area of 
 JMBRA i 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 VHOLE 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 1878. 
 
 
 
 o 
 
 
 
 o 
 
 
 
 
 1878. 
 
 
 
 o 
 
 o 
 
 o 
 
 
 
 
 255 d 'IOI 
 
 277 
 
 o-g5i 
 
 272-0 
 
 189-9 
 
 + 4'2 
 
 33 
 
 100 
 
 260 */ 
 
 3o4 d '783 
 
 2 7 8 
 
 O-343 
 
 69-8 
 
 i63'3 
 
 -io-6 
 
 4 
 
 79 
 
 
 
 
 o'g3i 
 
 292-0 
 
 
 
 
 
 35g 
 
 Nov. 2* 
 
 
 
 
 
 
 04) 
 
 (79) 
 
 
 Sept. 1 3 
 
 
 
 
 
 
 (33) 
 
 (100) 
 
 (619) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 3o5'8o4 
 
 278 
 
 o-'i5i 
 
 4 2-I 
 
 1 63 - o 
 
 + 10-4 
 
 i3 
 
 7' 
 
 
 256-014 
 
 
 o-g8i 
 
 292-3 
 
 
 
 
 
 '44 
 
 Nov. 3* 
 
 
 
 
 
 
 (i3) 
 
 (7') 
 
 
 
 
 0-969 
 
 272-0 
 
 
 
 
 
 118 
 
 
 
 
 
 
 
 
 
 
 Sept. 14 
 
 
 
 
 
 
 
 
 (262) 
 
 306-714 
 
 278 
 
 o-'i5i 
 
 3i6-i 
 
 i63-2 
 
 + 9'9 
 
 9 
 
 65 
 
 
 
 
 
 
 
 
 
 
 
 Nov. 4* 
 
 
 
 
 
 
 (9) 
 
 (65) 
 
 
 27O-6g5 
 
 
 o-g83 
 
 87-6 
 
 
 
 
 
 170 
 
 
 
 
 
 
 
 
 
 
 Sept. 29* 
 
 
 
 
 
 
 
 
 (170) 
 
 308-047 
 
 2 7 8 
 
 0-404 
 
 286-5 
 
 162-8 
 
 --lO'I 
 
 '7 
 
 7 
 
 
 
 
 
 
 
 
 
 
 
 Nov. 5 
 
 
 
 
 
 
 ('7) 
 
 (70 
 
 
 271-894 
 
 
 o-g 1 4 
 
 88-5 
 
 
 
 
 
 207 
 
 
 
 
 
 
 
 
 
 
 Sept. 3o 
 
 
 
 
 
 
 
 
 (207) 
 
 3o8'8ig 
 
 278 
 
 0-564 
 
 283-0 
 
 i63'o 
 
 -t-io-3 
 
 i3 
 
 66 
 
 
 
 
 
 
 
 
 
 
 
 Nov. 6* 
 
 
 
 
 
 
 (13) 
 
 (66) 
 
 
 272-017 
 
 
 o-go7 
 
 89-2 
 
 
 
 
 
 302 
 
 
 
 
 
 
 
 
 
 
 Sept. 3o 
 
 
 
 
 
 
 
 
 (302) 
 
 3 1 0-008 
 
 2/8 
 
 0-770 
 
 280-8 
 
 1 63-6 
 
 -t-io-5- 
 
 20 
 
 7 1 
 
 
 
 
 
 
 
 
 
 
 
 Nov. 7 
 
 
 
 
 
 
 (20) 
 
 (71) 
 
 
 272-933 
 Oct. i 
 
 
 0-807 
 
 88-0 
 
 
 
 
 
 401 
 
 (401) 
 
 3 1 0-800 
 
 2 7 8 
 
 0-869 
 
 280-3 
 84-2 
 
 1 63-3 
 
 -pi 0-6 
 
 16 
 
 69 
 
 136 
 
 280-004 
 
 
 0*901 
 
 75-5 
 
 
 
 
 
 78 
 
 Nov. 8* 
 
 
 
 
 
 
 (16) 
 
 (69) 
 
 (36o) 
 
 Oct. 8 
 
 
 
 
 
 
 
 
 (78) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 \/ f 
 
 3ir682 
 
 2 7 8 
 
 o'gSo 
 
 279-9 
 
 1 63-3 
 
 H-io-4 
 
 11 
 
 37 
 
 226/ 
 
 28o-o65 
 Oct. 8 
 
 
 0-896 
 
 76-5 
 
 
 
 
 
 58 
 (58) 
 
 Nov.- g* 
 
 
 o-g 1 8 
 
 84-3 
 
 
 
 00 
 
 (37) 
 
 107 
 (333) 
 
 283-703 
 
 
 0-968 
 
 86-4 
 
 
 
 
 
 33 1 
 
 3i8-g86 
 
 
 0*948 
 
 62-7 
 
 
 
 
 
 166 
 
 (s s\ 
 
 Oct. 12* 
 
 
 
 
 
 
 
 
 (33 1) 
 
 Nov. 1 6 
 
 
 
 
 
 
 
 
 1 66) 
 
 284778 
 
 
 o-g 1 5 
 
 85-3 
 
 
 
 
 
 222 
 
 32i-g83 
 
 
 0-943 
 
 276-0 
 
 
 
 
 
 168 
 
 Oct. 1 3* 
 
 
 
 
 
 
 
 
 (222) 
 
 Nov.. 19 
 
 
 
 
 
 
 
 
 ('68) 
 
 291-045 
 
 
 o-8 9 7 
 0-876 
 
 296-5 
 io6-3 
 
 
 
 
 
 '77 
 
 322-790 
 Nov. 20* 
 
 2780 
 
 o-g82 
 
 86-1 
 
 226-1 
 
 + 4'* 
 
 8 
 (8) 
 
 5o 
 (5o) 
 
 179P 
 
 ('79) 
 
 Oct. ig 
 
 
 
 
 
 
 
 
 (3n) 
 
 
 
 
 
 
 
 
 
 
 2 9 2-g67 
 Oct. 21 
 
 
 0-705 
 
 269-7 
 
 
 
 
 
 227 
 (227) 
 
 323-828 
 Nov. 21* 
 
 2780 
 
 o'gn 
 
 86-6 
 
 226-5 
 
 + 3-9 
 
 2 
 (*) 
 
 '9 
 ('9) 
 
 I I2p 
 
 (.12) 
 
 3oo-8o5 
 Oct. 29* 
 
 2 7 8 
 
 0-948 
 
 80-6 
 
 ,63-, 
 
 + .0-3 
 
 13 
 
 (i 3) 
 
 io3 
 
 (.03) 
 
 36i/ 
 (36 1) 
 
 324-714 
 
 NOV. 22* 
 
 ^ 
 
 0-800 
 
 85-g 
 
 226-7 
 
 + 4* 
 
 
 
 9 
 ('9) 
 
 122 C 
 
 (.22) 
 
 301-682 
 
 2 7 8 
 
 0-86 1 
 
 8o-3 
 
 i63 - 4 
 
 + 10-6 
 
 l3 
 
 91 
 
 35 7 f 
 
 
 
 
 
 
 
 
 
 
 Oct. 3o* 
 
 
 
 
 
 
 (13) 
 
 
 (35 7 ) 
 
 33I-978 
 
 
 0775 
 
 276-2 
 
 
 
 
 
 l6 7 
 
 (l ^\ 
 
 
 
 
 
 
 
 
 
 
 Nov. 2g 
 
 
 
 
 
 
 
 
 167) 
 
 302-704 
 
 2 7 8 
 
 0719 
 
 79'3 
 
 1 63- 9 
 
 + io-6 
 
 7 
 
 io5 
 
 i6o/ 
 
 
 
 
 
 
 
 
 
 
 Oct. 3i* 
 
 
 
 
 
 
 07) 
 
 (,o5) 
 
 (160) 
 
 332-071 
 Nov. 2g 
 
 
 0-774 
 
 275-7 
 
 
 
 
 
 "74 
 (74) 
 
 3o3-g68 
 
 2 7 8 
 
 0-504 
 
 75-9 
 
 163-4 
 
 4-10-6 
 
 20 
 
 io3 
 
 
 
 
 
 
 
 
 
 
 
 
 
 0-941 
 
 262-7 
 
 
 
 
 
 97 
 
 348-803 
 
 
 o'g5g 
 
 278-0 
 
 
 
 
 
 f CN 
 
 
 
 0-878 
 
 129-8 
 
 
 
 
 
 98 
 
 Dec. 1 6 
 
 
 
 
 
 
 
 
 (9 3 ) 
 
 Nov. i 
 
 
 
 
 
 
 (20) 
 
 (io3) 
 
 (195) 
 
 
 
 
 
 
 
 
 
 , 
 
 
 
 
 
 
 
 
 
 
 349-674 
 
 
 o-g46 
 
 291-0 
 
 
 
 
 
 (fs\ 
 
 304-021 
 
 2 7 8 
 
 O'4g3 
 
 7 5- 7 
 
 1 63-5 
 
 + 10-6 
 
 17 
 
 79 
 
 
 Dec, 17 
 
 
 
 
 
 
 
 
 () 
 
 Nov. i 
 
 
 o-942 
 0-878 
 
 261-7 
 i3o-o 
 
 
 
 O/) 
 
 (79) 
 
 85 
 go 
 (i 7 5) 
 
 35i'g3g 
 Dec. ig 
 
 27/ 
 
 0-924 
 
 268- 
 
 348-1 
 
 1'7 
 
 (7) 
 
 36 
 (36) 
 
 3o3/ 
 
 (3o3) 
 
 * Indian photo. The Area* of Spots and Faculas are expressed in Millionth* of the Sun's visible Hemisphere. 
 
REDUCTION OP SOLAR PHOTOGRAPHS THROUGHOUT 1878-1881. 
 
 MKVSLRKS of POSITIONS and AREAS of SPOTS and FACUL.* upon the SUN'S DISK on PHOTOGRAPHS taken in the YKAK 1878 continued. 
 
 Mi-an 
 Solar 
 Time. 
 
 No. o( 
 Group 
 and 
 Letter 
 for 
 Spot. 
 
 Dis- 
 tance 
 from 
 Centre 
 in 
 terms 
 of 
 Sun's 
 Radius 
 
 Position 
 Alujle 
 from 
 Sun's 
 Axis. 
 
 HBLIOGRAI-UII: 
 
 SPOTS. 
 
 FAC,, 
 
 Mi-an 
 Solar 
 Time. 
 
 No. of 
 Group 
 and 
 Letter 
 for 
 Spot. 
 
 Dis- 
 tance 
 
 troiu 
 Centre 
 in 
 terms 
 of 
 Sun's 
 Radius. 
 
 Position 
 
 Angle 
 from 
 Bon'i 
 Axis. 
 
 HEI.IOOKAIMIIO 
 
 SPOTS. 
 
 FAC,,,, 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 KMliKA 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 
 \vnou-; 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 eacli 
 Group 
 (and 101- 
 Day). 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area i.f 
 
 UMBRA 
 
 for eaeh 
 Spot 
 (and for 
 Day). 
 
 Area of 
 WHOLE 
 ' for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 
 !;:.-!] 
 
 Group 
 
 (and for 
 Day). 
 
 1878. 
 
 
 
 o 
 
 
 
 o 
 
 
 
 
 1879. 
 
 
 
 o 
 
 o 
 
 
 
 
 
 
 352 d -668 
 Dec. 20* 
 
 278^ 
 
 0-976 
 
 269-0 
 
 3 4 8-4 
 
 - ''4 
 
 P 
 (9) 
 
 26 
 (26) 
 
 23. ./ 
 (231) 
 
 69 d '8.2 
 Mar. 12* 
 
 
 '944 
 
 174-2 
 
 
 
 
 
 "9 
 0'9) 
 
 
 
 
 
 
 
 
 
 
 71-732 
 
 
 0-962 
 
 274-1 
 
 
 
 
 
 65 
 
 1879. 
 
 
 
 
 
 
 
 
 
 
 
 0-843 
 
 .04-7 
 
 
 
 
 
 40 
 
 17-800 
 
 
 0-957 
 
 n3-3 
 
 
 
 
 
 249 
 
 
 
 o-g58 
 
 
 
 
 
 
 1 33 
 
 Ian. 19* 
 
 
 
 
 
 
 
 
 (249) 
 
 Mar. 14* 
 
 
 
 
 
 
 
 
 (238) 
 
 .8-666 
 
 
 0-979 
 
 89-6 
 
 
 
 
 
 83 
 
 73-710 
 
 
 0-944 
 
 186-6 
 
 
 
 
 ,3, 
 
 
 
 0-889 
 
 1 14-6 
 
 
 
 
 
 2 4 3 
 
 
 
 0-959 
 
 166-0 
 
 
 
 
 
 83 
 
 Jan. 20* 
 
 
 
 
 
 
 
 
 (326) 
 
 Mar. 1 6* 
 
 
 
 
 
 
 
 
 (214) 
 
 
 
 
 
 
 
 
 
 
 74-662 
 
 
 0-887 
 
 53-i 
 
 
 
 
 
 .3 7 
 
 19-668 
 
 
 0-929 
 
 88-0 
 
 
 
 
 
 252 
 
 
 
 0-949 
 
 i56-q 
 
 
 
 
 
 63 
 
 
 
 0787 
 
 117-4 
 
 
 
 
 
 274 
 
 Mar. 17* 
 
 
 
 J 
 
 
 
 
 
 (200) 
 
 
 
 0-91 3 
 
 258-6 
 
 
 
 
 
 66 
 
 
 
 
 
 
 
 
 
 
 Jan. 21* 
 
 
 
 
 
 
 
 
 
 76-647 
 
 
 0-943 
 
 68-8 
 
 
 
 
 
 77 
 
 
 
 
 
 
 
 
 
 
 
 
 0-939 
 
 175-4 
 
 
 
 
 
 5. 
 
 
 
 
 
 
 
 
 
 
 Mar. ig* 
 
 
 
 
 
 
 
 
 (i38) 
 
 20-675 
 
 
 0-917 
 
 87-8 
 
 
 
 
 
 96 
 
 ? 
 
 
 
 
 
 
 
 
 
 
 
 0-92.5 
 
 258-5 
 
 
 
 
 
 35 
 
 82-848 
 
 
 0-852 
 
 347-9 
 
 
 
 
 
 25 7 
 
 Jan. 22* 
 
 
 
 
 
 
 
 
 (.3.) 
 
 
 
 0-949 
 
 119-9 
 
 
 
 
 
 III 
 
 
 
 
 
 
 
 
 
 
 Mar. 25* 
 
 
 
 
 
 
 
 
 (438) 
 
 28-804 
 
 
 0-960 
 
 2 9 8'2 
 
 
 
 
 
 62 
 
 
 
 
 
 
 
 
 
 
 
 
 o'Soo 
 
 271-8 
 
 
 
 
 
 155 
 
 83-790 
 
 
 0-888 
 
 122-8 
 
 
 
 
 
 i5o 
 
 Jan. 3o* 
 
 2780 
 
 0-678 
 
 241-1 
 
 129-9 
 
 -23- 7 
 
 (4) 
 
 29 
 (29) 
 
 (217) 
 
 Mar. 26* 
 
 
 0-964 
 
 57-4 
 
 
 
 
 
 221 
 
 (37 1 ) 
 
 29-790 
 
 
 0-937 
 
 272-0 
 
 
 
 
 
 270 
 
 84-654 
 
 
 0-816 
 
 126-6 
 
 
 
 
 
 55 
 
 Jan. 3.* 
 
 2 7 8c 
 
 0-8 1 8 
 
 244-9 
 
 i3o-5 
 
 23-g 
 
 o 
 
 (7) 
 
 (466) 
 
 Mar. 27* 
 
 
 o-giS 
 
 53-5 
 
 
 
 
 
 2 49 
 (304) 
 
 30-804 
 
 
 0-896 
 
 248-0 
 
 
 
 
 
 .52 
 
 96-023 
 
 
 0-921 
 
 123-7 
 
 
 
 
 
 262 
 
 
 
 0-961 
 
 g5-3 
 
 
 
 
 
 125 
 
 Apr. 7 
 
 
 
 
 
 
 
 
 (262) 
 
 
 
 o-g85 
 
 66-g 
 
 
 
 
 
 110 
 
 
 
 
 
 
 
 
 
 
 Feb. i* 
 
 
 
 
 
 
 
 
 (38 7 ) 
 
 96-038 
 
 
 0-917 
 
 123-8 
 
 
 
 
 
 203 
 
 
 
 
 
 
 
 
 
 
 Apr. 7 
 
 
 
 
 
 
 
 
 (203) 
 
 31-721 
 
 
 0-960 
 
 246-6 
 
 
 
 
 
 89 
 
 
 
 
 
 
 
 
 
 
 
 
 0-888 
 
 9 2'2 
 
 
 
 
 
 84 
 
 96-927 
 
 
 0-848 
 
 126-3 
 
 
 
 
 
 204 
 
 
 : 0-948 
 
 62-5 
 
 
 
 
 
 212 
 
 Apr. 8 
 
 
 
 
 
 
 
 
 (204) 
 
 Feb. 2* 
 
 
 
 
 
 
 
 
 (385) 
 
 
 
 
 
 
 
 
 
 32-684 
 
 
 0-892 
 
 5g-o 
 
 
 
 
 
 385 
 
 96-975 
 Apr. 8 
 
 
 0-837 
 
 126-0 
 
 
 
 
 
 '7' 
 
 Feb. 3* 
 
 
 
 
 
 
 
 
 (385) 
 
 
 
 
 
 
 
 
 
 
 35-668 
 
 
 0-971 
 
 348-1 
 
 
 
 
 
 32 
 
 104-094 
 
 2790 
 279* 
 
 0-449 
 0-469 
 
 127-8 
 .25-6 
 
 1 55-0 
 1 53-3 
 
 21-0 
 
 20-8 
 
 24 
 1 
 
 10. 
 
 47 
 
 
 Feb. 6* 
 
 
 0-718 
 
 96-8 
 
 
 
 
 
 140 
 (172) 
 
 Apr. i5 
 
 2790 
 
 o-53o 
 
 123-7 
 
 149-0 
 
 -2I- 9 
 
 II 
 (36) 
 
 (182) 
 
 
 41-934 
 
 
 0-912 
 
 298-0 
 
 
 
 
 
 186 
 
 
 
 
 
 
 
 
 
 
 
 
 0-877 
 
 229-7 
 
 
 
 
 
 1.6 
 
 104-587 
 
 2790 
 
 o-3 74 
 
 .34-4 
 
 154-3 
 
 -20-3 
 
 16 
 
 75 
 
 
 Ffl>. i 2 
 
 
 
 
 
 
 
 
 (302) 
 
 
 279* 
 
 0-394 
 
 .3i-6 
 
 152-6 
 
 20-3 
 
 
 
 74 
 
 
 
 
 
 
 
 
 
 
 
 
 27gd 
 
 0-420 
 
 i33'4 
 
 .01-7 
 
 -21-8 
 
 o 
 
 5 
 
 
 Feb. " 1 2 
 
 
 0-897 
 
 297-0 
 
 
 
 
 
 IOO 
 
 (.00) 
 
 Apr. i6f 
 
 2790 
 
 0-451 
 
 129-0 
 
 148-9 
 
 21-6 
 
 .6 
 
 (32) 
 
 73 
 (227) 
 
 
 * Indian photo. The Areas of Spots and Faculnc are expressed in Millionths of the Sun's visible Hemisphere. t Melbourne phoio. 
 
 a f-4893. 
 
10 
 
 REDUCTION OF SOLAR PHOTOGRAPHS THROUGHOUT 1878-1881. 
 
 MBASCRES of POSITIONS and AREAS of SPOTS and FACUL^E upon the SUN'S DISK on PHOTOGRAPHS taken in the YEAK 1879 continued. 
 
 
 
 Dis- 
 
 
 HELIOORAPHIC 
 
 SPOTS. 
 
 FACUL.IE. 
 
 
 
 Dis- 
 
 
 HELIOORAPHIO 
 
 SPOTS. 
 
 FACUL.E. 
 
 
 No. of 
 
 tance 
 
 D ' ' 
 
 
 
 
 
 No. of 
 
 tance 
 ^ 
 
 D ' ' 
 
 
 
 
 Mean 
 Solar 
 Time. 
 
 Group, 
 and 
 Letter 
 for 
 
 Spot. 
 
 from 
 Centre 
 in 
 terms 
 of 
 Sun's 
 Radius. 
 
 . osition 
 Angle 
 from 
 Sun's 
 Axis. 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 QMBHA 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 WHOLE 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 Mean 
 Solar 
 Time. 
 
 Group, 
 and 
 Letter 
 for 
 
 Spot. 
 
 irorn 
 Centre 
 in 
 terms 
 of 
 Sun's 
 Radius. 
 
 Position 
 Angle 
 from 
 
 Sun's 
 Axis. 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBliA 
 for each 
 Spot 
 (and for 
 Da)). 
 
 Area of 
 WHOLE 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 1879. 
 
 
 
 o 
 
 
 
 o 
 
 
 
 
 1879- 
 
 
 
 
 
 
 
 o 
 
 
 
 
 io6 d -og5 
 
 
 O'qi I 
 
 233-5 
 
 
 
 
 
 89 
 
 i37 d '944 
 
 
 o-g33 
 
 248-3 
 
 
 
 
 
 205 
 
 
 
 0-8 1 8 
 
 320-7 
 
 
 
 
 
 70 
 
 May 19 
 
 
 
 
 
 
 
 
 (205) 
 
 
 279 
 
 C'268 
 
 igi-3 
 
 1 54-0 
 
 20-5 
 
 28 
 
 122 
 
 
 
 
 
 
 
 
 
 
 
 
 27 9 C 
 
 o'2go 
 
 170-0 
 
 '477 
 
 -21-8 
 
 5 
 
 22 
 
 
 i38'oi4 
 
 
 o-g3o 
 
 248-8 
 
 
 
 
 
 203 
 
 
 
 0-806 
 
 58-5 
 
 
 
 
 
 184 
 
 May 19 
 
 
 
 
 
 
 
 
 (2o3) 
 
 
 
 0-808 
 
 8-5 
 
 
 
 
 
 54 
 
 
 
 
 
 
 
 
 
 
 
 
 o-g57 
 
 1 14-5 
 
 
 
 
 
 146 
 
 iSS-ggS 
 
 o-83o 
 
 99' 2 
 
 
 
 
 
 1 34 
 
 Apr. 17 
 
 
 
 
 
 
 (33) 
 
 ('44) 
 
 (543) 
 
 
 
 o'8g4 
 
 go-5 
 
 
 
 
 
 37 
 
 
 
 
 
 
 
 
 
 
 June g 
 
 
 
 
 
 
 
 
 (171) 
 
 io6'g53 
 
 279 
 
 0-358 
 
 222-1 
 
 154-2 
 
 -20-4 
 
 3o 
 
 '49 
 
 
 
 
 
 
 
 
 
 
 
 
 2790 
 
 o-3 1 8 
 
 204-1 
 
 147-5 
 
 22-0 
 
 3 
 
 20 
 
 
 163-975 
 
 
 o-8n 
 
 240-5 
 
 
 
 
 
 52 
 
 
 280 
 
 o-8g3 
 
 I17-0 
 
 77-1 
 
 26*4 
 
 o 
 
 9 
 
 149 np 
 
 .lune 14 
 
 
 
 
 
 
 
 (52) 
 
 Apr. 18 
 
 
 
 
 
 
 (33) 
 
 ('78) 
 
 (149) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 164-054 
 
 
 0-841 242-3 
 
 
 
 
 
 log 
 
 108-012 
 
 2790 
 
 0-533 
 
 23g-o 
 
 154-5 
 
 2O'4 
 
 26 
 
 i35 
 
 
 June 14 
 
 
 i 
 
 
 
 
 
 (log) 
 
 Apr. 19 
 
 
 
 
 
 
 (26) 
 
 (.35) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 176-904 
 
 2820 
 
 0-700 
 
 i3i'4 
 
 207-2 
 
 25-3 
 
 22 
 
 40 
 
 
 108-068 
 
 2790 
 
 0-041 
 
 239-4 
 
 154-4 
 
 2O'4 
 
 28 
 
 1 20 
 
 
 
 2826 
 
 0-755 
 
 I2g-g 
 
 253-8 
 
 26-g 
 
 18 
 
 65 
 
 
 Apr. 19 
 
 
 
 
 
 
 (28) 
 
 (120) 
 
 
 June 27 
 
 
 
 
 
 
 (4) 
 
 (105) 
 
 
 ioS'562 
 
 2790 
 
 0-622 
 
 243-1 
 
 154-3 
 
 2O'3 
 
 23 
 
 i3o 
 
 
 i 77 -g82 
 
 2820 
 
 0-565 
 
 146-5 
 
 209-7 
 
 -25-4 
 
 25 
 
 75 
 
 
 Apr. 2o1 
 
 
 
 
 
 
 (23) 
 
 03o) 
 
 
 
 2826 
 
 0-633 
 
 141-2 
 
 253-6 
 
 -27-0 
 
 26 
 
 70 
 
 
 
 
 
 
 
 
 
 
 
 June 28 
 
 
 
 
 
 
 (5i) 
 
 (HO) 
 
 
 109-628 
 
 2790 
 
 0-780 
 
 247-3 
 
 154-3 
 
 -207 
 
 23 
 
 140 
 
 6 7 o/ 
 
 
 
 
 
 
 
 
 
 
 Apr. 2 1 < 
 
 
 
 
 
 
 (23) 
 
 (140) 
 
 (670) 
 
 i78-o6g 
 
 2820 
 
 0-554 
 
 M7'9 
 
 25g-8 
 
 -25-2 
 
 16 
 
 94 
 
 
 
 
 
 
 
 
 
 
 
 
 2826 
 
 0-616 
 
 142-7 
 
 254-1 
 
 26-7 
 
 H 
 
 46 
 
 
 1 10-558 
 
 2790 
 
 0-887 
 
 249-2 
 
 154-2 
 
 -20-7 
 
 3i 
 
 178 
 
 i538/ 
 
 June 28 
 
 
 
 
 
 
 (3o) 
 
 (140) 
 
 
 Apr. 22 1 
 
 
 
 
 
 
 (3i) 
 
 
 (l538) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 I7979 6 
 
 2820 0-492 
 
 189-5 
 
 261-0 
 
 26-0 
 
 21 
 
 I 12 
 
 
 iirogS 
 
 2790 
 
 o'g6g 
 
 249-5 
 
 154-3 
 
 2I'O 
 
 o 
 
 207 
 
 I2 4 8/ 
 
 
 2826 o-5o8 
 
 175-6 
 
 253'4 
 
 -27-4 
 
 H 
 
 75 
 
 
 Apr. 231 
 
 
 
 
 
 
 (o) 
 
 (207) 
 
 (1248) 
 
 June3o 
 
 
 
 
 
 (35) 
 
 (187) 
 
 
 I27-583 
 
 28ia 
 
 0-702 
 
 67-6 
 
 181-2 
 
 + 14-4 
 
 
 
 84 
 
 
 180-170 
 
 282^ o'5i3 
 
 197-9 
 
 26ro 
 
 -26-2 
 
 '7 
 
 98 
 
 
 
 
 0-833 
 
 66-6 
 
 
 
 
 
 1 1 06 
 
 
 2826 o-5i2 
 
 183-3 
 
 252-g 
 
 -27-6 
 
 13 
 
 73 
 
 
 
 
 0-934 
 
 64-7 
 
 
 
 
 
 n3o 
 
 June 3o 
 
 
 
 
 
 
 (3o) 
 
 ('70 
 
 
 May g1 
 
 
 
 
 
 
 (o) 
 
 (84) 
 
 (2236) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 180-622 
 
 2820' 0-546 
 
 207-4 
 
 261-2 
 
 26-0 
 
 24 
 
 n5 
 
 
 128-894 
 
 28u 
 
 0-547 
 
 58-2 
 
 181-0 
 
 -T-14'0 
 
 13 
 
 43 
 
 
 
 , 
 
 O'02O 
 
 194-6 
 
 253-4 
 
 -27-1 
 
 o 
 
 97 
 
 
 
 2816 
 
 0-643 
 
 58-o 
 
 174-8 
 
 + 17-4 
 
 
 
 3 
 
 
 
 2 
 
 0-5 16 
 
 iqi-8 
 
 25i-8 
 
 -2 7 -3 
 
 12 
 
 56 
 
 
 
 
 0-843 
 
 61-2 
 
 
 
 
 
 246 
 
 
 283 
 
 o-g6g 
 
 61-7 
 
 170-0 
 
 + 28-1 
 
 O 
 
 20 
 
 
 
 
 0-875 
 
 1 12-5 
 
 
 
 
 
 364 
 
 July if 
 
 
 
 
 
 
 (36) 
 
 (288) 
 
 
 May 10 
 
 
 
 
 
 
 (i3) 
 
 (46) 
 
 (610) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 181-927 
 
 2820 
 
 0-697 
 
 225-8 
 
 261-4 
 
 26-4 
 
 7 
 
 101 
 
 
 I28'g55 
 
 2810 
 
 0-535 
 
 57-6 
 
 iSri 
 
 4-13-g 
 
 16 
 
 4 6 
 
 
 
 282^ 0-629 
 
 2 1 6- 7 
 
 252-6 
 
 -27-3 
 
 ii 
 
 29 
 
 
 
 2816 
 
 0-629 
 
 57-4 
 
 175-1 
 
 + 17-2 
 
 o 
 
 3 
 
 
 
 283 
 
 0-871 
 
 5 9 '8 
 
 169-7 
 
 + 27-6 
 
 3 
 
 9 
 
 374 / 
 
 
 
 0-818 
 
 60-0 
 
 
 
 
 
 23l 
 
 July 2 
 
 
 
 
 
 
 (30 
 
 ('39) 
 
 (374) 
 
 
 
 0-890 
 
 ii3-8 
 
 
 
 
 
 276 
 
 
 
 
 
 
 
 
 
 
 May 10 
 
 
 
 
 
 
 (16) 
 
 (49) 
 
 (007) 
 
 181-949 
 
 2820 
 
 0-698 
 
 226-0 
 
 26r3 
 
 -26-3 
 
 20 
 
 io5 
 
 1 16 c 
 
 
 
 
 
 
 
 
 
 
 
 2826 
 
 0-627 
 
 216-8 
 
 252-3 
 
 -27-1 
 
 7 
 
 3o 
 
 
 i3o-gi6 
 
 28ia 
 
 0-283 
 
 3-5 
 
 181-8 
 
 + 13-5 
 
 4 
 
 20 
 
 
 
 283 
 
 0-869 
 
 5 9 -6 
 
 169-7 
 
 + 27-8 
 
 2 
 
 10 
 
 435 nf 
 
 Miiy 1 2 
 
 
 
 
 
 
 (4) 
 
 (20) 
 
 
 July 2 
 
 
 
 
 
 
 (29) 
 
 (I 4 5) 
 
 (55 1 ) 
 
 i3rog2 
 
 2810 
 
 0-284 
 
 354-6 
 
 182-0 
 
 + 13-6 
 
 3 
 
 II 
 
 
 
 
 
 
 
 
 
 
 
 May 12 
 
 
 
 
 
 
 (3) 
 
 00 
 
 
 182-587 
 
 2g20 
 
 0-775 
 
 23l'I 
 
 261-3 
 
 -26-7 
 
 3i 
 
 128 
 
 
 
 
 
 
 
 
 
 
 
 
 2826 
 
 0-698 
 
 224-6 
 
 252'2 
 
 27-0 
 
 
 
 37 
 
 
 i35-8g5 
 
 
 o'Sgg 
 
 2887 
 
 
 
 
 
 426 
 
 
 283 
 
 o'8oo 
 
 56-g 
 
 i6q'q 
 
 + 2 7'q 
 
 8 
 
 25 
 
 l32O nf 
 
 May 17 
 
 
 
 
 
 
 
 
 (426) 
 
 July 3f 
 
 
 
 
 
 
 (39) 
 
 ('9) 
 
 (i32o) 
 
 The Areas of Spots and Faculse are expressed in Millionth^ of the Sun's risible Hemisphere. t Melbourne photo. 
 
REDUCTION OF SOLAR PHOTOGRAPHS THROUGHOUT 1878-1881. 
 
 11 
 
 MEASURES of POSITIONS and AREAS of SPOTS and FACUL.-K upon the SUN'S DISK on PHOTOGRAPHS taken in the YEAU 1879 continued. 
 
 
 
 Dis- 
 
 
 IlKi.iocRAriin; 
 
 Si-ors. 
 
 FACI;L.. 
 
 
 
 Ms. 
 
 
 III I.IOGHAl'HIC 
 
 SPOTS. 
 
 FACUI./E. 
 
 Mean 
 Solar 
 Time. 
 
 No. of 
 Group, 
 and 
 
 Letter 
 for 
 Spot. 
 
 tanec 
 from 
 Centre 
 in 
 terms 
 of 
 Sun's 
 Radius. 
 
 Position 
 
 Angle 
 
 from 
 Sim's 
 Axis. 
 
 
 
 
 Mean 
 Solar 
 
 Time. 
 
 No. of 
 Group, 
 and 
 Letter 
 for 
 Spot. 
 
 tance 
 from 
 
 ('.litre 
 in 
 terms 
 
 of 
 
 Sun's 
 
 Kailius. 
 
 Position 
 Angle 
 from 
 
 Sun's 
 Axis. 
 
 
 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 .An :i (H 
 
 UMBRA 
 
 for earh 
 Spot 
 (anil fur 
 Pay). 
 
 Are.i nt 
 Will ILK 
 for each 
 Spot 
 (and fo,- 
 Day). 
 
 Area for 
 each 
 Group 
 (aud for 
 Day). 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBRA 
 
 Spot 
 (and for 
 Day). 
 
 Area of 
 WHOLE 
 for each 
 Spot 
 (anil for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 1879. 
 
 
 
 o 
 
 o 
 
 o 
 
 
 
 
 i8 7 g. 
 
 
 
 o 
 
 o 
 
 o 
 
 
 
 
 i83 d -gg6 
 
 2820 
 
 O-qi3 
 
 23g-i 
 
 26ro 
 
 -26-3 
 
 20 
 
 9 
 
 59' / 
 
 2-|i d -og2 
 
 286a 
 
 '477 
 
 40-9 
 
 '447 
 
 + 27-8 
 
 26 
 
 '3 7 
 
 
 
 283 
 
 0-617 
 
 47-6 
 
 169-5 
 
 + 27-4 
 
 
 
 12 
 
 
 
 2866 
 
 o-57 9 
 
 4g-3 
 
 i35'5 
 
 4-28-4 
 
 5 
 
 16 
 
 
 
 
 0-832 
 
 5i-o 
 
 
 
 
 
 3i5 
 
 
 286r: 
 
 0-079 
 
 52'O 
 
 134-6 
 
 -t-27'1 
 
 o 
 
 12 
 
 
 .July 4 
 
 
 
 
 
 
 (20) 
 
 (102) 
 
 (906) 
 
 
 
 o-go5 
 
 82-3 
 
 
 
 
 
 3g6 
 
 
 
 
 
 
 
 
 
 
 Aug. 3o 
 
 
 
 
 
 
 (3i) 
 
 (i 65) 
 
 (396) 
 
 184-900 
 
 2820 
 
 283 
 
 0-973 
 0-497 
 
 2417 
 35'2 
 
 261-2 
 169-6 
 
 26-5 
 
 + 27-2 
 
 1 1 
 
 1 
 
 66 
 9 
 
 607 */ 
 432 / 
 
 242-g2g 
 
 2860 
 
 0-366 
 
 354-7 
 
 143-2 
 
 4-28-5 
 
 4" 
 
 162 
 
 
 J uly 5 
 
 
 
 
 
 
 (12) 
 
 (75) 
 
 (1089) 
 
 
 2866 
 
 0-382 
 
 7'9 
 
 137-6 
 
 4-29-3 
 
 
 
 12 
 
 
 
 
 
 
 
 
 
 
 
 Sept. i 
 
 
 
 
 
 
 (40 
 
 (174) 
 
 
 > i >4'977 
 
 282" 
 
 0-970 
 
 241-8 
 
 260-8 
 
 -26-5 
 
 4 
 
 8l 
 
 7io*/' 
 
 
 
 
 
 
 
 
 
 
 
 283 
 
 0-490 
 
 33-g 
 
 169-5 
 
 +27-2 
 
 i 
 
 10 
 
 658 / 
 
 
 
 
 
 
 
 
 
 
 .Inly 5 
 
 
 
 
 
 (5) 
 
 (90 
 
 (i368) 
 
 243-095 
 
 286 
 
 o-366 
 
 349-8 
 
 143-0 
 
 + 28-2 
 
 38 
 
 1 55 
 
 
 
 
 
 
 
 
 
 
 
 2866 
 
 o-3 74 
 
 3-2 
 
 137-5 
 
 + 29-1 
 
 o 
 
 8 
 
 
 187'ojg 
 
 O'gi 2 
 
 3io - o 
 
 
 
 
 
 94 
 
 Sept. i 
 
 
 
 
 
 
 (38) 
 
 (i 63) 
 
 
 
 0-971 
 
 85-2 
 
 
 
 
 
 86 
 
 
 
 
 
 
 
 
 
 
 July - 
 
 
 
 
 
 
 
 (i 80) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 243'g64 
 
 286a 
 
 0-432 
 
 327'g 
 
 142-4 
 
 4-28-4 
 
 35 
 
 i53 
 
 
 187-060 
 
 0-gl I 
 
 309-7 
 
 
 
 
 
 1 35 
 
 Sept. 2 
 
 
 
 
 
 
 (35) 
 
 ('53) 
 
 
 
 0-970 
 
 85-o 
 
 
 
 
 
 i55 
 
 
 
 
 
 
 
 
 
 
 July 7 
 
 
 
 
 
 
 
 
 (290) 
 
 244-060 
 
 2860 
 
 0-443 
 
 325'g 
 
 142-4 
 
 + 28-4 
 
 25 
 
 106 
 
 
 
 
 
 
 
 
 
 
 
 Sept. 2 
 
 
 
 
 
 
 (20) 
 
 (156) 
 
 
 194-622 
 
 283a 
 
 0'5 1 2 
 
 273-3 
 
 9O-5 
 
 + 5-5 
 
 23 
 
 129 
 
 
 
 
 
 
 
 
 
 
 
 July i of 
 
 
 
 
 
 
 (23) 
 
 ("9) 
 
 
 244-896 
 
 286a 
 
 0-544 
 
 3i3-5 
 
 141-6 
 
 + 28-4 
 
 29 
 
 167 
 
 
 
 
 
 
 
 
 
 
 
 Sept. 3 
 
 
 
 
 
 
 (29) 
 
 (167) 
 
 
 i , 7-891 
 
 
 O-g55 
 
 275-7 
 
 
 
 
 
 222 
 
 
 
 
 
 
 
 
 
 
 July 18 
 
 
 
 
 
 
 
 
 (222) 
 
 240-032 
 
 2860 
 
 0-563 
 
 311-7 
 
 141-6 
 
 4/28-3 
 
 32 
 
 1 80 
 
 
 
 
 
 
 
 
 
 
 
 Sept. 3 
 
 
 
 
 
 
 (32) 
 
 (180) 
 
 
 209-902 
 
 
 0-957 
 
 243-7 
 
 
 
 
 
 286 
 
 
 
 
 
 
 
 
 
 
 July 3o 
 
 
 
 
 
 
 
 
 (286) 
 
 245-907 
 
 2860 
 
 0-686 
 
 304-7 
 
 141*5 
 
 4-28-6 
 
 34 
 
 168 
 
 
 
 
 
 
 
 
 
 
 
 Sept. 4 
 
 
 
 
 
 
 (34) 
 
 ('68) 
 
 
 212-928 
 
 
 0-978 
 
 85-o 
 
 
 
 
 
 140 
 
 
 
 
 
 
 
 
 
 
 Aug. 2 
 
 
 
 
 
 
 
 
 (I 4 0) 
 
 249-904 
 
 
 o - 82g 
 
 5g-5 
 
 
 
 
 
 416 
 
 
 
 
 
 
 
 
 
 
 Sept. 8 
 
 
 
 
 
 
 
 
 ( 4 i5) 
 
 222-922 
 
 284 
 
 0-849 
 
 244-8 
 
 98-7 
 
 -i 7 -3 
 
 7 
 
 56 
 
 270 sf 
 
 
 
 
 
 
 
 
 
 
 
 285 
 
 0-748 
 
 277-3 
 
 94-0 
 
 + 9' 8 
 
 26 
 
 81 
 
 
 265-g38 
 
 287 
 
 o-g27 
 
 61-1 
 
 128-g 
 
 4-2 9 -3 
 
 23 
 
 g6 
 
 484 n 
 
 Aug. 12 
 
 
 
 
 
 
 (43) 
 
 ( 3 7 ) 
 
 (2 7 0) 
 
 Sept. 24 
 
 
 
 
 
 
 (23) 
 
 (96) 
 
 (484) 
 
 223'ogi 
 
 284 
 
 0-869 
 
 245-4 
 
 98-9 
 
 -17-5 
 
 20 
 
 58 
 
 38o*/ 
 
 267-062 
 
 287 
 
 0-824 
 
 58-7 
 
 128-6 
 
 4-29-5 
 
 12 
 
 3 9 
 
 352 nj 
 
 
 285 
 
 774 
 
 277-2 
 
 94'' 
 
 + 97 
 
 7 
 
 172 
 
 
 
 
 o- 9 27 
 
 81-2 
 
 
 
 
 
 221 
 
 Aug. 12 
 
 
 
 
 
 
 (9) 
 
 (a3o) 
 
 (38o) 
 
 Sept. 25 
 
 
 
 
 
 
 (2) 
 
 (3 9 ) 
 
 (5 7 3) 
 
 
 
 
 
 
 
 
 
 267-090 
 
 287 
 
 0-821 
 
 58-6 
 
 128-6 
 
 4-29-5 
 
 17 
 
 56 
 
 366 nf 
 
 223-g3o 
 
 284 
 
 0-943 
 
 248-8 98-9 
 
 -17-4 
 
 i3 
 
 29 
 
 203S/ 
 
 
 
 o-g3g 
 
 8o-5 
 
 
 
 
 
 i3i 
 
 
 285 
 
 0-881 
 
 278-0 94-2 
 
 4- IO-2 
 
 52 
 
 1 38 
 
 
 Sept. 20 
 
 
 
 
 
 
 ('7) 
 
 (56) 
 
 (497) 
 
 Aug. 1 3 
 
 
 
 
 
 
 (65) 
 
 (-67) 
 
 (203) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 268-016 
 
 287 
 
 0-71 1 
 
 5 4 -3 
 
 128-4 
 
 4-29-7 
 
 27 
 
 52 
 
 
 
 
 
 
 
 
 
 
 
 Sept. 26 
 
 
 
 
 
 
 (27) 
 
 (52) 
 
 
 238-092 
 
 285a 
 
 0-883 
 
 282-3 
 
 z6o'q 
 
 4-I4-I 
 
 
 
 52 
 
 814 *./ 
 
 
 
 
 
 
 
 
 
 
 
 2860 
 
 0-810 
 
 5g'o 
 
 145-9 
 
 4-29-1 
 
 28 
 
 121 
 
 
 268-093 
 
 287 
 
 0*699 
 
 53-8 
 
 128-5 
 
 4-29-6 
 
 i3 
 
 4' 
 
 \j6n 
 
 
 2866 
 
 0-853 
 
 5g-i 
 
 141-0 
 
 + zg-g 
 
 '9 
 
 77 
 
 1052 C 
 
 Sept. 26 
 
 
 
 
 
 
 (i3) 
 
 (40 
 
 (-6) 
 
 Ang.aSt 
 
 
 
 
 
 
 (47) 
 
 (25o) 
 
 (1866) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 268-991 
 
 287 
 
 0-584 
 
 46-7 
 
 187-9 
 
 4-29-6 
 
 9 
 
 29 
 
 
 
 
 
 
 
 
 
 
 
 
 0-786 
 
 77-5 
 
 
 
 
 
 5oo 
 
 240-910 
 
 286a 
 
 o'Soo 
 
 43-7 
 
 144-8 
 
 + 27-8 33 
 
 162 
 
 
 Sept. 27 
 
 
 
 
 
 
 (9) 
 
 ('9) 
 
 (5oo) 
 
 
 2866 
 
 0*604 
 
 Sri 
 
 135-5 
 
 4-28-4 6 
 
 '9 
 
 
 
 
 
 
 
 
 
 
 
 
 
 0-906 
 
 83-o 
 
 
 
 
 
 228 
 
 269-016 
 
 287 
 
 0-087 
 
 46-4 
 
 127-4 
 
 4-29-8 
 
 7 
 
 18 
 
 
 Aug. 3o 
 
 
 
 
 
 
 (3 9 ) 
 
 ('80 
 
 (228) 
 
 Sept. 27 
 
 
 
 
 
 
 (7) 
 
 (18) 
 
 
 The Areas of Spots aud FacultD are expressed in Milliontlis of the Sun's visible Hemisphere. t Melbourne p'uoto. 
 
 B 2 
 
12 
 
 REDUCTION OF SOLAR PHOTOGRAPHS THROUGHOUT 1878-1881. 
 
 MEASURES of POSITIONS and AREAS of SPOTS and FACUL.E upon the SUN'S DISK on PHOTOGRAPHS taken in the YEAR 1879 continued. 
 
 
 
 Dis- 
 
 
 HELIOORAPHIC 
 
 SPOTS. 
 
 FACUL.E. 
 
 
 
 Dis- 
 
 
 HKI.IOORAPHIC 
 
 SPOTS. 
 
 FACULJE. 
 
 
 No. of 
 
 tance 
 
 . 
 
 
 
 
 
 No. of 
 
 tance 
 ^ 
 
 . . 
 
 
 
 
 Mean 
 Solar 
 Time. 
 
 Group, 
 and 
 Letter 
 for 
 Spot. 
 
 from 
 Centre 
 in 
 terms 
 of 
 Sun's 
 Radius. 
 
 Position 
 Angle 
 from 
 Sun's 
 Axis. 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBRA 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 WHOLE 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 Mean 
 Solar 
 Time. 
 
 Group, 
 and 
 Letter 
 for 
 Spot. 
 
 irom 
 Centre 
 in 
 tenns 
 of 
 Sun's 
 Radius. 
 
 Position 
 Angle 
 from 
 Sun's 
 Axis. 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBRA 
 tor each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 WHOLE 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 
 (ami for 
 
 Day). 
 
 1879. 
 
 
 
 o 
 
 o 
 
 
 
 
 
 
 1879. 
 
 
 
 o 
 
 o 
 
 o 
 
 
 
 
 
 2880 
 
 0-637 
 
 222-6 
 
 II7-5 
 
 22"! 
 
 4 
 
 23 
 
 
 288 d- 046 
 
 2gia 
 
 0*466 
 
 174-0 
 
 262-6 
 
 2l'g 
 
 o 
 
 9 
 
 
 
 2886 
 
 0-642 
 
 218-0. 
 
 116-0 
 
 24*0 
 
 '9 
 
 31 
 
 
 
 2916 
 
 0-478 
 
 168-6 
 
 269-7 
 
 + 22-2 
 
 o 
 
 10 
 
 
 
 
 o-86g 
 
 67-8 
 
 
 
 
 
 335 
 
 
 
 0-9 1 5 
 
 Iig'3 
 
 
 
 
 
 280 
 
 Oct. 2 
 
 
 
 
 
 
 (23) 
 
 (54) 
 
 (335) 
 
 Oct. 1 6 
 
 
 
 
 
 
 (o) 
 
 (19) 
 
 (280) 
 
 274-091 
 
 288a 
 
 0-640 
 
 222-8 
 
 117-2 
 
 -22-4 
 
 3 
 
 26 
 
 
 289-967 
 
 
 0*890 
 
 28g-o 
 
 
 
 
 
 806 
 
 
 2886 
 
 0-647 
 
 218-8 
 
 1 1 6-0 
 
 24-3 
 
 10 
 
 3i 
 
 
 
 2910 
 
 0-618 
 
 220-3 
 
 266-0 
 
 -23-1 
 
 4 5 
 
 i3 7 
 
 
 
 
 0-847 
 
 5i- 7 
 
 
 
 
 
 79 
 
 
 2gic 
 
 o-5g5 
 
 2i8-5 
 
 263-g 
 
 22'6 
 
 o 
 
 38 
 
 
 
 
 0-887 
 
 65-5 
 
 
 
 
 
 41 
 
 
 2916 
 
 0-569 
 
 214-4 
 
 260-6 
 
 22-8 
 
 52 
 
 236 
 
 
 Oct. 2 
 
 
 
 
 
 
 (13) 
 
 (57) 
 
 (120) 
 
 Oct. 1 8 
 
 
 
 
 
 
 (97) 
 
 (4") 
 
 (806) 
 
 274-906 
 
 288(7 
 
 0-748 
 
 232'6 
 
 118-6 
 
 22-O 
 
 i3 
 
 4 3 
 
 
 290*066 
 
 
 o-8gg 
 
 288-7 
 
 
 
 
 
 g3o 
 
 
 288* 
 
 0-734 
 
 228-3 
 
 1 1 5-6 
 
 24-0 
 
 8 
 
 3 4 
 
 
 
 2gia 
 
 0-627 
 
 221-4 
 
 265-6 
 
 -23-1 
 
 49 
 
 i3i 
 
 
 Oct. 3 
 
 
 
 
 
 
 (21) 
 
 (77) 
 
 
 
 2gic 
 
 o'6oi 
 
 219-8 
 
 263-4 
 
 22'4 
 
 4 
 
 56 
 
 
 
 
 
 
 
 
 
 
 
 
 " zgiA 
 
 0-575 
 
 2 1 5-6 
 
 260-1 
 
 -22-7 
 
 53 
 
 226 
 
 
 276-070 
 
 
 o-85i 
 
 3o8-8 
 
 
 
 
 
 5i3 
 
 Oct. 1 8 
 
 
 
 
 
 
 (106) 
 
 (41 3) 
 
 ( 9 3o) 
 
 
 
 o-85g 
 
 237-5 
 
 
 
 
 
 191 
 
 
 
 
 
 
 
 
 
 
 Oct. 4 
 
 
 
 
 
 
 
 
 (704) 
 
 291-914 
 
 2gia 
 
 0-856 
 
 23g-o 
 
 267-2 
 
 22-g 
 
 5i 
 
 232 
 
 "1 
 
 
 
 
 
 
 
 
 
 
 
 2916 
 
 799 
 
 235-8 
 
 260-2 
 
 22-g 
 
 4 1 
 
 21 I 
 
 / 
 
 277-980 
 
 
 o-g87 
 
 244-0 
 
 
 
 
 
 io5 
 
 Oct. 20 
 
 
 
 
 
 
 (92) 
 
 (443) 
 
 (244) 
 
 Oct. 6 
 
 
 
 
 
 
 
 
 (i 05) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 291-951 
 
 2gia 
 
 0-853 
 
 23g-o 
 
 266-4 
 
 22'7 
 
 83 
 
 265 
 
 i 
 
 278-910 
 
 28ga 
 
 0-969 
 
 7 5- 4 
 
 3og-5 
 
 + 15-7 
 
 IO 
 
 3 4 
 
 
 
 2916 
 
 797 
 
 235-8 
 
 25g"5 
 
 -22-g 
 
 52 
 
 2ig 
 
 1 ooc 
 
 
 2896 
 
 0-981 
 
 72-9 
 
 3o6-i 
 
 + '7'9 
 
 10 
 
 52 
 
 325/ 
 
 Oct. 20 
 
 
 
 
 
 
 (135) 
 
 (484) 
 
 (3oo) 
 
 Oct. 7 
 
 
 
 
 
 
 (20) 
 
 (86) 
 
 (325; 
 
 
 
 
 
 
 i 
 
 
 
 279-051 
 
 28g.7 
 
 0-961 
 
 75-6 
 
 3og"4 
 
 + i5-6 
 
 
 
 23 
 
 
 2g2-g83 
 
 2910 
 2916 
 
 o-g54 
 o-gii 
 
 243-8 
 241-3 
 
 268-7 
 260-8 
 
 23-o ! 5i 
 
 23-4! 20 
 
 217 
 1 60 
 
 }io8/ 
 
 
 28g6 
 
 '974 
 
 72-9 
 
 3o6-3 
 
 + 18-0 
 
 7 
 
 35 
 
 633 / 
 
 
 
 o-g62 
 
 5 7 '2 
 
 
 
 
 280 
 
 Oct. 7 
 
 
 
 
 
 
 (7) 
 
 (58) 
 
 (633) 
 
 Oct. 21 
 
 
 
 
 
 
 (70 
 
 (377) 
 
 (,388) 
 
 279-616 
 
 2890 
 2896 
 
 o-gi i 
 o-g3i 
 
 76-2 
 72-4 
 
 3 1 0-6 
 
 307 -6 
 
 + 16-1 
 + 18-6 
 
 o 
 o 
 
 34 
 3o 
 
 i8oo/ 
 
 2g6-g3o 
 Oct. 25 
 
 
 0-866 
 
 236-3 
 
 
 
 
 
 5o 
 (5o) 
 
 Oct. 8f 
 
 
 
 
 
 
 (o) 
 
 (6 4 ) 
 
 (1800) 
 
 2g7 - o65 
 
 
 o-8g6 
 
 237-0 
 
 
 
 
 
 1 1 1 
 
 
 
 
 
 
 
 
 
 
 Oct. 25 
 
 
 
 
 
 
 
 
 (HI) 
 
 282-097 
 
 2890 
 
 o-568 
 
 70-9 
 
 3 io-3 
 
 + i5'8 
 
 o 
 
 6 
 
 
 
 
 
 
 
 
 
 
 
 
 2896 
 
 o-6o5 
 
 7 o-3 
 
 307-7 
 
 + 16-7 
 
 2 
 
 6 
 
 
 3o8-g4i 
 
 
 0-922 
 
 1 1 o-3 
 
 
 
 
 
 i3i 
 
 
 2896 
 
 0-638 
 
 6g'5 
 
 3o5'4 
 
 + 177 
 
 '9 
 
 68 
 
 
 Nov. 6 
 
 
 
 
 
 
 
 
 (i3i) 
 
 
 28g6 
 
 0-702 
 
 68-0 
 
 3oo-5 
 
 + 19-7 
 
 22 
 
 44 
 
 
 
 
 
 
 
 
 
 
 
 Oct. 10 
 
 
 
 
 
 
 (43) 
 
 
 
 3lO'02O 
 
 2923 
 
 o-4g5 
 
 340-5 
 
 346-9 
 
 +3i-2 
 
 5 
 
 20 
 
 
 
 
 
 
 
 
 
 
 
 
 2926 
 
 o-5o3 
 
 345-5 
 
 344-3 
 
 + 32-5 
 
 9 
 
 3i 
 
 
 
 
 
 
 
 
 
 
 
 
 2g3 
 
 0-522 
 
 60-8 
 
 307-3 
 
 + 17-8 
 
 
 
 5 
 
 
 287-039 
 
 2900 
 
 0-718 
 
 5g-2 
 
 235-8 
 
 + 25-8 
 
 4 
 
 28 
 
 
 
 2g-r 
 
 0-8 1 1 
 
 5g'7 
 
 284-6 
 
 + 26-3 
 
 o 
 
 12 
 
 "1 ... 
 
 
 2906 
 
 0-767 
 
 6o-g 
 
 23l'0 
 
 + 2J-8 
 
 
 
 5 
 
 
 
 
 0-833 
 
 60- 1 
 
 282-1 
 
 + 26-6 
 
 3 
 
 2 4 
 
 j 106J 
 
 
 2goc 
 
 0-784 
 
 62-3 
 
 229-0 
 
 + 20-I 
 
 9 
 
 23 
 
 
 
 2g5a o'8gg 
 
 1 16- 1 
 
 275-8 
 
 -21-5 
 
 6 
 
 22 
 
 1 
 
 Oct. 1 5 
 
 
 
 
 
 
 (i3) 
 
 (56) 
 
 
 
 2g56' 0-944 
 
 114-7 
 
 268-0 
 
 21-8 
 
 44 
 
 3i5 
 
 1 - 
 > GOO C 
 
 
 
 
 
 
 
 
 
 
 
 2g5c 
 
 o-g5g 
 
 117-8 
 
 266-2 
 
 25-4 
 
 27 
 
 92 
 
 J 
 
 
 
 
 
 
 
 
 
 
 Nov. 7 
 
 
 
 
 
 
 (94) 
 
 C52i) 
 
 (1142) 
 
 287-064 
 
 2gon 
 
 0-713 
 
 59-7 
 
 235-8 
 
 + 25-3 
 
 
 
 25 
 
 
 
 
 
 
 
 
 
 
 2gob 
 
 0-765 
 
 6r5 
 
 230-7 
 
 + 25-3 
 
 o 
 
 5 
 
 
 310-046 
 
 2g2 0-488 
 
 33g-8 
 
 346-7 
 
 +3o-6 
 
 is 
 
 22 
 
 
 
 2goc 
 
 0-781 
 
 62-8 
 
 228'g 
 
 + 24-6 
 
 9 
 
 13 
 
 
 
 2926 0-496 
 
 345-0 344-1 
 
 + 32-O 
 
 9 
 
 33 
 
 
 Oct. i5 
 
 
 
 
 
 
 (9) 
 
 (43) 
 
 
 
 2g3 0-014 
 
 6ri 
 
 307-5 
 
 + 17-5 
 
 o 
 
 8 
 
 
 
 
 
 
 
 
 
 
 
 
 2940 o-8o5 
 
 5g- 9 
 
 284-8 
 
 + 26-0 
 
 6 
 
 i3 
 
 I -,8 f 
 
 
 
 
 
 
 
 
 
 
 
 2946 o'83o 
 
 6o-3 
 
 281-1 
 
 + 26-4 10 
 
 25 / '""' 
 
 287-ggS 
 
 2gia 
 
 0-466 
 
 172-9 
 
 262-6 
 
 -21-8 
 
 o 
 
 8 
 
 
 . 
 
 2g5 o'8g8 
 
 u 6-3 
 
 275-6 
 
 21-7 
 
 26 
 
 57 
 
 
 
 2gi6 
 
 0-478 
 
 167-5 
 
 2 5g-8 
 
 22-1 
 
 o 
 
 II 
 
 
 
 2g56 0-942 
 
 1 H'9 
 
 268-5 
 
 22-0 
 
 4 5 
 
 282 
 
 542 c 
 
 
 
 0-912 
 
 i ig'o 
 
 
 
 
 
 340 
 
 
 2g5c o-gog 
 
 118-1 
 
 265'q 
 
 25-6 
 
 13 
 
 IO2 
 
 
 Oct. 1 6 
 
 
 
 
 
 
 () 
 
 ('9) 
 
 (3 4 o) 
 
 Nov. 7 
 
 
 
 
 (116) 
 
 (542) 
 
 (8 10) 
 
 The Areas of Spots and Facials are expressed in Millionths of the Sun's risible Hemisphere. t Melbourne photo. 
 
REDUCTION OF SOLAR PHOTOGRAPHS THROUGHOUT 1878-1881. 
 
 13 
 
 MEASURES of POSITIONS and ARKAS of SPOTS and FACOLJS upon the SUN'S DISK on PHOTOGRAPHS taken in the YEAR 1879 continued. 
 
 
 
 Dis- 
 
 HELIOOUAFHIC 
 
 SPOTS. 
 
 FACUUK. 
 
 
 
 Dis- 
 
 
 HKI.IOORAPIUC 
 
 SPOTS. 
 
 FACULJE. 
 
 Mean 
 Solar 
 Time. 
 
 No. of 
 Group, 
 
 ami 
 Leltt-r 
 for 
 
 Spot. 
 
 tance 
 from 
 
 ( 'eiitrc 
 in 
 ti-nn-i 
 of 
 Sun's 
 Kadiu-. 
 
 Position 
 
 Angle 
 
 from 
 
 Bftn'i 
 Axis. 
 
 
 
 
 Mean 
 Solar 
 Time. 
 
 No. of 
 
 Group, 
 aud 
 Letter 
 for 
 Spot. 
 
 tance 
 from 
 Centre 
 in 
 terms 
 of 
 Sun's 
 Radius. 
 
 Position 
 Angle 
 from 
 Sun's 
 Axis. 
 
 
 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Ami of 
 UMliHA 
 for each 
 Spot 
 (aud for 
 Day). 
 
 Area of 
 WHOLE 
 for each 
 Spot 
 'and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and tor 
 Day). 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBRA 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 WHOLE 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 ^nd for 
 Day). 
 
 1879. 
 
 
 
 
 
 
 
 
 
 
 1879. 
 
 
 
 o 
 
 o 
 
 
 
 
 
 
 3i5 d -07i 
 
 
 0-969 
 
 302'2 
 
 
 
 
 261 
 
 .33i d -078 
 
 
 0-917 
 
 289-8 
 
 
 
 
 
 21 
 
 I 2goa 
 
 0-422 
 
 Iq3'7 
 
 275-3 
 
 21-2 
 
 
 
 H 
 
 
 296 
 
 0-624 
 
 U3'2 
 
 22-7 -i3- 4 
 
 12 
 
 28 
 
 
 2 q56 
 
 O-435 176-4 267-0 
 
 22'7 
 
 60 
 
 172 
 
 
 297 
 
 0-853 
 
 3o5'7 
 
 111-4 4-30-3 
 
 O 
 
 8 
 
 7 8sp 
 
 
 2gorf 
 
 o'3go 174-8 ; 267-5 
 
 19-8 
 
 10 
 
 21 
 
 
 298 
 
 0-906 
 
 1 1 3-6 
 
 355-8 
 
 20-8 
 
 O 
 
 33 
 
 I97/ 
 
 
 2g5e 
 
 0-522 
 
 171-3 i 264-0 
 
 28-0 
 
 
 
 5 
 
 Nov. 28 
 
 
 
 
 
 
 (12) 
 
 (69) 
 
 (296) 
 
 
 2g5e 
 
 0-400 
 
 181-9 
 
 260-0 
 
 2O-5 
 
 i5 
 
 58 
 
 
 
 
 
 
 
 
 
 
 Nov. 12 
 
 
 
 
 
 
 (85) 
 
 (270) (261) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 335-o55 
 
 298 
 
 0-372 
 
 164' i 
 
 35g-6 
 
 -20-4 
 
 2O 
 
 88 
 
 
 
 
 
 
 
 
 
 
 
 2 99 
 
 0-464 
 
 146-9 
 
 35o-o 
 
 -22-3 
 
 3 
 
 18 
 
 
 3i5-g24 
 
 2 90 f> 
 
 0-400 
 
 199-6 
 
 267-3 
 
 22'2 
 
 36 
 
 149 
 
 
 Dec. 2 
 
 
 
 
 
 (23) 
 
 (106) 
 
 
 
 2g5ti 
 
 0-424 
 
 203-7 
 
 268-3 
 
 ig-8 
 
 i? 
 
 5 9 
 
 
 
 
 
 
 
 
 
 
 Nov. 1 3 
 
 
 
 
 
 (53) 
 
 (208) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 336-037 
 
 
 0-908 
 
 25g-8 
 
 
 
 
 
 106 
 
 
 
 
 
 
 
 
 
 
 298 
 
 0-377 
 
 199-0 
 
 o-3 
 
 -20-4 
 
 10 
 
 55 
 
 
 3i6'o5z 
 
 2966 
 
 0-460 
 
 2o3'o 267-4 
 
 22'2 
 
 37 
 
 164 
 
 
 
 299 
 
 o-3go 
 
 172-8 
 
 349-8 
 
 -22-3 
 
 o 
 
 10 
 
 
 
 2g5rf 
 
 0-437 
 
 207-9 268-8 
 
 19-8 
 
 1 1 
 
 64 
 
 
 Dec. 3 
 
 
 
 
 
 
 (10) 
 
 (65) 
 
 (io5) 
 
 Nov. 1 3 
 
 
 
 
 
 (48) 
 
 (228) 
 
 
 
 
 
 
 
 
 
 
 
 3i 6-902 
 
 
 0-91 1 
 
 292-5 
 
 
 
 
 "97 
 
 336-g63 
 
 298 
 
 0-482 
 
 22 1 -g 
 
 0-7 
 
 -20-7 
 
 4 
 
 16 
 
 
 
 2 9 56 
 
 o'55 1 
 
 221"! 267-3 
 
 -21'9 
 
 *7 
 
 1 63 
 
 
 Dec. 4 
 
 
 
 
 
 
 (4) 
 
 (16) 
 
 
 Nov. 14 
 
 
 
 
 
 (27) 
 
 063) 
 
 (197) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 336-970 
 
 298 
 
 0-482 
 
 221*1 
 
 o-3 
 
 2TO 
 
 o 
 
 7 
 
 
 316-997 
 
 
 0-846 
 
 294-7 
 
 
 
 
 2 7 8 
 
 Dec. 4 
 
 
 
 
 
 
 (o) 
 
 (7) 
 
 
 
 2966 
 
 0-557 
 
 221-7 267-3 
 
 22'0 
 
 25 
 
 100 
 
 
 
 
 
 
 
 
 
 
 
 Nov. 14 
 
 
 
 
 
 (20) 
 
 (i5o) 
 
 (2 7 8) 
 
 338-927 
 
 
 0-700 
 
 236-8 
 
 
 
 
 
 616 
 
 
 
 
 
 
 
 
 
 
 
 0-834 
 
 120-0 
 
 
 
 
 
 720 
 
 3i8'ooo 
 
 2 9 56 
 
 0-680 
 
 233-2 266-7 
 
 22-1 
 
 19 
 
 1 20 
 
 
 Dec. 6 
 
 
 
 
 
 
 
 
 (i336) 
 
 Nov. 1 5 
 
 
 
 
 
 (19) 
 
 (120) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 339-024 
 
 
 0-707 
 
 238-7 
 
 
 
 
 
 3n 
 
 3i8'oc6 
 
 zg56 
 
 0-681 
 
 233-4 266-4 
 
 -21-8 
 
 18 
 
 102 
 
 
 
 
 o'8 ii 
 
 122-5 
 
 
 
 
 
 447 
 
 Nov. 1 5 
 
 
 
 
 
 (18) 
 
 (102) 
 
 
 Dec. 6 
 
 
 
 
 
 
 
 
 (758) 
 
 320-924 
 
 2966 
 
 0-972 
 
 246-5 266-5 
 
 22-2 
 
 o 
 
 27 
 
 646 */ 
 
 349-0)6 
 
 
 o-g58 
 
 246-2 
 
 
 
 
 
 352 
 
 
 
 '947 
 
 71-2 
 
 
 
 
 5o 
 
 
 3oo 
 
 0-791 
 
 u3-i 
 
 i3i-8 
 
 l8-g 
 
 9 
 
 27 
 
 i6osf 
 
 Nov. 1 8 
 
 
 
 
 
 (o) 
 
 (27) 
 
 (696) 
 
 
 
 0-708 
 
 58'7 
 
 
 
 
 
 1961 
 
 
 
 
 
 
 
 
 
 
 
 0-981 
 
 60-7 
 
 
 
 
 
 81 
 
 320-983 
 
 2966 
 
 0-978 
 
 246-5 267-0 
 
 -22-4 
 
 o 
 
 23 
 
 443 / 
 
 Dec. 16 
 
 
 
 
 
 
 (9) 
 
 (27) 
 
 (255 4 ) 
 
 
 
 o- 9 3 4 
 
 70-8 
 
 
 
 
 89 
 
 
 
 
 
 
 
 
 
 
 Nov. 1 8 
 
 
 
 
 
 (o) 
 
 (23) 
 
 (532) 
 
 349-889 
 
 3oo 
 
 0-602 
 
 1 1 8-5 
 
 134-1 
 
 -I 9 -2 
 
 23 
 
 122 
 
 
 
 
 
 
 
 
 
 
 
 3oo 
 
 0-692 
 
 n8-5 
 
 i3o-o 
 
 -20-3 
 
 8 
 
 3g 
 
 
 021-999 
 
 
 0-845 
 
 69-3 
 
 
 
 
 
 162 
 
 
 
 0-926 
 
 58-6 
 
 
 
 
 
 424. 
 
 Nov. iq 
 
 
 
 
 
 
 
 
 (162) 
 
 Dec. 17* 
 
 
 
 
 
 
 (3i) 
 
 (161) 
 
 (4H) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 32 2-009 
 
 
 0-834 
 
 70-7 
 
 
 
 
 1 55 
 
 35o'75g 
 
 3oo 
 
 o-5og 
 
 128-6 
 
 1 34-0 
 
 ig-8 
 
 22 
 
 103 
 
 
 Nov. 19 
 
 
 
 
 
 
 
 
 (i 55) 
 
 
 3oo 
 
 0-555 
 
 125-6 
 
 i3o-3 
 
 20-1 
 
 7 
 
 49 
 
 
 
 | 
 
 
 
 
 
 
 
 
 0-863 
 
 54-0 
 
 
 
 
 
 236 
 
 328-o37 
 
 296 o-g5i 
 
 100-4 
 
 2 7 -3 
 
 12'2 
 
 10 
 
 28 
 
 268 sf 
 
 Dec. i8 
 
 
 
 
 
 
 (29) 
 
 (1 52) 
 
 (236) 
 
 Nov. 20 
 
 
 
 
 
 (10) 
 
 (28) 
 
 (268) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 351-907 
 
 3oo 0-304 
 
 i5r8 
 
 i33'7 
 
 ig'6 
 
 24 
 
 93 
 
 
 328-071 
 
 296 
 
 0-900 
 
 103-4 
 
 27-0 
 
 12-2 
 
 o 
 
 17 
 
 282 */ 
 
 
 3oo 0*384 
 
 I43-5 
 
 129-9 
 
 -19-4 
 
 8 
 
 52 
 
 
 Nov. 26 
 
 
 
 
 
 
 (o) 
 
 (<7) 
 
 (282) 
 
 
 0-747 
 
 46^2 
 
 
 
 
 
 266 
 
 
 
 
 
 
 
 
 
 
 Dec. 19* 
 
 
 
 
 
 (32) 
 
 (140) 
 
 (266) 
 
 33roi5 
 
 
 o-qoi 
 
 291-5 
 
 
 
 
 66 
 
 
 
 
 
 
 
 
 
 
 296 
 
 0-628 
 
 112-9 247 
 
 -i3-3 
 
 9 
 
 21 
 
 352-671 
 
 3oo o-3 ii 
 
 1 80-6 
 
 1 33-g 
 
 '97 
 
 9 
 
 108 
 
 
 
 297 
 
 0-847 
 
 3o5'7 i iii-o 
 
 4-30-2 
 
 
 
 II I46*/J 
 
 
 3oo o-3o8 
 
 167-6 
 
 129-7 
 
 -ig-i 
 
 o 
 
 47 
 
 
 
 298 
 
 0-914 
 
 113-4 
 
 355-5 
 
 20-8 
 
 9 
 
 26 197 f 
 
 
 0-942 
 
 125-4 
 
 
 
 
 
 i65 
 
 Nov. 28 
 
 
 
 
 
 (18) 
 
 (58) (3 99 j 
 
 Dec. 20* 
 
 
 
 
 
 (9) 
 
 (i 55) 
 
 (i 65) 
 
 * Indian photo. The Areas of Spots ami Facials are expressed ii. Millionth* of the Sun'i visible Hemisphere. 
 
14 
 
 REDUCTION OF SOLAR PHOTOGRAPHS THROUGHOUT 1878-1881. 
 
 MEASURES of POSITIONS and AREAS of SPOTS and FACOL^E upon the SUN'S DISK on PHOTOGRAPHS taken in the YEAR 1879 continued. 
 
 
 
 Dis- 
 
 
 HELIOGRAPHIC 
 
 SPOTS. 
 
 FACULJE. 
 
 
 
 Dis- 
 
 
 HEI.IOGRAPHIC 
 
 SPOTS. 
 
 FACUT.2E. 
 
 
 No. of 
 
 tance 
 
 
 
 
 
 
 No. of 
 
 tance 
 
 . . 
 
 
 
 
 Mean 
 Solar 
 Time. 
 
 Group, 
 and 
 Letter 
 for 
 Spot. 
 
 from 
 Centre 
 in 
 terms 
 of 
 Sun's 
 Radius. 
 
 Position 
 Angle 
 from 
 
 Sun's 
 Axis. 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBRA 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 WHOLE 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 Mean 
 Solar 
 Time. 
 
 Group, 
 and 
 Letter 
 for 
 
 Spot. 
 
 from 
 Centre 
 in 
 terms 
 of 
 Sun's 
 -iadius. 
 
 Position 
 Angle 
 from 
 Sun's 
 Axis. 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMliRA 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 WHOLE 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 I879- 
 
 
 
 o 
 
 
 
 
 
 
 
 
 1880. 
 
 
 
 
 
 
 
 o 
 
 
 
 
 353 d -6gi 
 
 3oo 
 
 0-378 
 
 216-6 
 
 l34'l 
 
 19-5 
 
 26 
 
 i3i 
 
 
 8 a 785 
 
 
 0-942 
 
 240-8 
 
 
 
 
 
 365 
 
 
 3oo 
 
 0-334 
 
 208-2 
 
 129-9 
 
 18-9 
 
 
 
 29 
 
 
 
 3oi 
 
 o'56g 
 
 3127 
 
 241-8 4-18-9 
 
 63 
 
 352 
 
 
 
 
 0-879 '3o'O 
 
 
 
 
 
 109 
 
 
 3oi 
 
 0-537 
 
 322-7 
 
 236-o 
 
 4-2T2 
 
 5 
 
 21 
 
 
 Dec. 21* 
 
 
 
 
 
 
 (26) 
 
 (i 60) 
 
 (109) 
 
 
 3oic 
 
 o'48g 
 
 225-5 
 
 238-o 
 
 23-8 
 
 
 
 8 
 
 
 
 
 
 
 
 
 
 
 
 
 3o3 
 
 79 
 
 38-o 
 
 '7 9'4 
 
 + 35-0 
 
 17 
 
 82 
 
 
 
 
 
 
 
 
 
 
 
 
 3o3 
 
 0-8 10 
 
 3g-3 
 
 176-8 
 
 4-35-4 
 
 o 
 
 6 
 
 3780 
 
 1880. 
 
 
 
 
 
 
 
 
 
 
 3o3 
 
 0-827 
 
 41*0 
 
 174-1 
 
 4-35-4 
 
 6 
 
 3i 
 
 
 1-964 
 
 
 0-802 
 
 244-2 
 
 
 
 
 
 I 7 8 
 
 
 
 o-g3o 
 
 57-6 
 
 
 
 
 
 120 
 
 Jan. 3 
 
 3oi 
 
 o-g3o 
 
 66-6 
 
 240-2 
 
 4-20-2 
 
 38 
 (38) 
 
 i ii 
 
 ('") 
 
 57' / 
 (749) 
 
 Jan. 10* 
 
 
 o-g66 
 
 io8-5 
 
 
 
 (90 
 
 (5oo) 
 
 '47 
 
 ( 1 1 0) 
 
 
 
 
 
 
 
 
 
 
 9'7 6 9 
 
 
 o-g83 
 
 241-2 
 
 
 
 
 
 u3 
 
 1.988 
 
 
 0-861 
 
 243-2 
 
 
 
 
 
 i3 7 
 
 
 3oi 
 
 0-705 
 
 3o2-g 
 
 241-3 
 
 4- 19'! 
 
 65 
 
 323 
 
 674 c 
 
 
 3oi 
 
 o-g3l 
 
 66-7 
 
 239-7 
 
 4-20-2 
 
 28 
 
 io3 
 
 35i/ 
 
 
 3o3 
 
 0-716 
 
 27-9 
 
 178-6 
 
 4-35-2 
 
 7 
 
 47 
 
 
 Jan. 3 
 
 
 
 
 
 
 (28) 
 
 (io3) 
 
 (488) 
 
 
 3o3 
 
 o- 7 3o 
 
 3o-2 
 
 176-1 
 
 4-35-2 
 
 o 
 
 '7 
 
 
 
 
 
 
 
 
 
 
 
 
 3o3 
 
 0-750 
 
 33-o 
 
 172-8 
 
 4-35-1 
 
 5 
 
 4' 
 
 
 
 
 
 
 
 
 
 
 
 
 
 o-qi6 
 
 111-4 
 
 
 
 
 
 196 
 
 2-708 
 
 
 0-922 
 
 245-8 
 
 
 
 
 
 326 
 
 Jan. n* 
 
 
 J 
 
 
 
 
 (77) 
 
 (428) 
 
 (983) 
 
 
 3oi 
 3oia 
 
 0-852 
 0-928 
 
 64-1 
 ioS-5 
 
 241-3 
 227-9 
 
 Ig-8 
 18-4 
 
 26 
 o 
 
 1 IO 
 
 3 4 
 
 7I7/ 
 
 lo-gSo 
 
 3oi 
 
 0-854 
 
 295-4 
 
 241-5 
 
 4-18-9 
 
 62 
 
 304 
 
 6o3 nf 
 
 
 3oia 
 
 0-945 
 
 109-2 
 
 225'C 
 
 lg-2 
 
 9 
 
 29 
 
 356 e 
 
 
 302 
 
 0-684 
 
 249-6 
 
 229-0 
 
 -17-1 
 
 i3 
 
 34 
 
 
 Jan. 4* 
 
 
 
 
 
 
 (35) 
 
 ('73) 
 
 (l3gg) 
 
 
 302 
 
 o-65g 
 
 248-6 
 
 226-9 
 
 -i 7 -3 
 
 23 
 
 54 
 
 
 
 
 
 
 
 
 
 
 
 
 3o3 
 
 O-652 
 
 I 1*2 
 
 178-3 
 
 4-35-2 
 
 ii 
 
 4.6 
 
 270 c 
 
 
 
 
 
 
 
 
 
 
 
 3o3 
 
 0-66 1 
 
 "'9 
 
 175-9 
 
 4-35-4 
 
 o 
 
 '8 
 
 
 3-732 
 
 
 0-986 
 
 248-4 
 
 
 
 
 
 5 4 2 
 
 
 3o3 
 
 0-672 
 
 18-2 
 
 172-3 
 
 4-35-3 
 
 12 
 
 26 
 
 ( 
 
 
 
 3oli 
 
 0798 
 0-573 
 
 3l2'I 
 52-1 
 
 264-0 
 
 4-I7-3 
 
 4 
 
 27 
 
 112 
 
 Jan. 12 
 
 304 
 
 0-942 
 
 110-4 
 
 116-7 
 
 -20-7 
 
 O 
 (121) 
 
 (477) 
 
 (i 2 io3) SP 
 
 
 3oi 
 
 0719 
 
 58-5 
 
 241-8 
 
 4-I9-2 
 
 3 9 
 
 1 7 5 
 
 
 
 
 
 
 
 
 
 
 
 
 3oi 
 3oi 
 
 0-756 
 
 0787 
 
 5 9 - 7 
 60-7 
 
 238-4 
 235-3 
 
 4-197 
 
 4-20-1 
 
 
 
 16 
 
 i5 
 62 
 
 4 i/ 
 
 i rooo 
 
 3oi 
 
 0-864 
 
 2g5'2 
 
 242-0 
 
 4-19-1 
 
 52 
 
 3lo 
 
 5i8n/ 
 
 
 3oia 
 
 0-810 
 
 110-2 
 
 229-1 
 
 18-4 
 
 24 
 
 74 
 
 
 
 3O2 
 
 0-698 
 
 25o-o 
 
 229-6 
 
 -17-1 
 
 22 
 
 4' 
 
 
 Jan. 5* 
 
 3oia 
 
 o-85g 
 
 III-I 
 
 223-9 
 
 -'9'9 
 
 4 
 (87) 
 
 3 4 
 (38 7 ) 
 
 229 c 
 (1284) 
 
 
 302 
 
 3o3 
 3o3 
 
 0-671 
 o'65 1 
 o-656 
 
 249-0 
 
 97 
 12-6 
 
 227-3 
 1787 
 176-4 
 
 17-2 
 4-35-3 
 4-35-3 
 
 16 
 
 '4 
 
 o 
 
 42 
 42 
 5 
 
 2760 
 
 
 
 
 
 
 
 
 
 
 
 3o3 
 
 0-667 
 
 l6'q 
 
 1727 
 
 4-35-2 
 
 8 
 
 26 
 
 
 4-824 
 
 3oi6 
 
 0-4 1 g 
 
 3o-g 
 
 254-8 
 
 + '7'4 
 
 6 
 
 3i 
 
 
 
 3o 4 
 
 o-g36 
 
 1 1 0-2 
 
 117-0 
 
 20-4 
 
 
 
 1 1 
 
 249 s p 
 
 
 3oi 
 3oi 
 
 0-562 
 
 0-60 1 
 
 46-8 
 50-7 
 
 242-2 
 
 4-19-2 
 4-19-1 
 
 25 
 
 o 
 
 '77 
 '4 
 
 
 Jan. 12 
 
 304 
 
 0-949 
 
 104-4 
 
 1 14-6 
 
 1 5* i 
 
 o 
 (122) 
 
 ( 4 st) 
 
 (1043) 
 
 
 3oi 
 
 o-663 
 
 52-o 
 
 233-g 
 
 4-21-0 
 
 12 
 
 52 
 
 
 
 
 
 
 
 
 
 
 
 Jan. 6* 
 
 3oia 
 
 0-647 
 
 Il3'2 
 
 229-4 
 
 -17-6 
 
 '4 
 (57) 
 
 63 
 (337) 
 
 
 11-807 
 
 3oi 
 
 o- 9 3 4 
 
 292-5 
 
 241-5 
 
 4-ig'i 
 
 5 9 
 
 O 
 
 353 
 
 O Q 
 
 461 nf 
 
 
 
 
 
 
 
 
 
 
 
 302 
 
 0-810 
 
 25i-g 
 
 229-3 
 
 -17-2 
 
 18 
 
 08 
 
 
 
 
 
 
 
 
 
 
 
 
 302 
 
 0773 
 
 25r3 
 
 225-7 
 
 -17-2 
 
 8 
 
 58 
 
 
 5-683 
 
 
 0-ql8 
 
 294-4 
 
 
 
 
 
 636 
 
 
 3o3 
 
 0-642 
 
 357-4 
 
 177-8 
 
 4-35-2 
 
 
 
 52 
 
 
 
 3oii 
 3oi 
 
 o-365 
 '449 
 
 3- 4 
 3o*4 
 
 255-2 
 
 242-7 
 
 4-17-4 
 
 4-18-9 
 
 4 
 4' 
 
 46 
 164 
 
 
 Jan. i 3* 
 
 3o3 
 
 o-638 
 
 3-g 
 
 172-8 
 
 4-34-8 
 
 o 
 (85) 
 
 (573) 
 
 (461) 
 
 
 3oi 
 
 0-472 
 
 34-6 
 
 240-1 
 
 4-iq-o 
 
 o 
 
 70 
 
 
 
 
 
 
 
 
 
 
 
 Jan. 7* 
 
 3oi 
 3oia 
 
 0-534 
 0-482 
 
 40-7 
 
 120-0 
 
 234-8 
 
 230-7 
 
 4-20-1 
 
 -17-4 
 
 i5 
 i3 
 
 (73) 
 
 132 
 
 66 
 
 (478) 
 
 (636) 
 
 12-785 
 
 3oi 
 302 
 
 302 
 
 0-988 
 0-920 
 0-888 
 
 290-7 
 204-5 
 
 241-4 
 
 23o-o 
 225-4 
 
 4-19-6 
 16-1 
 -16-8 
 
 58 
 61 
 58 
 
 291 
 3i 7 
 
 2 7 5 
 
 58i/ 
 814 c 
 
 
 
 
 
 
 
 
 
 
 
 3o3 
 
 0-668 
 
 343-4 
 
 176-4 
 
 4-35-2 
 
 5 
 
 26 
 
 
 7-609 
 
 3oi 
 3oi 
 
 0-428 
 0-428 
 
 333-0 
 33g-i 
 
 243-0 
 240-5 
 
 4-18-3 
 4-19-4 
 
 2 9 
 '7 
 
 '79 
 
 70 
 
 
 
 3o3 
 3o5 
 
 0-653 
 o'2g5 
 
 349-2 
 237-4 
 
 171-5 
 
 177-7 
 
 + 35-2 
 -13-6 
 
 2 
 
 5 
 
 '7 
 34 
 
 
 Jan. g-j 
 
 3oi 
 3o3 
 
 0-433 
 0-88 1 
 
 348-7 
 45-6 
 
 236-4 
 1 80-8 
 
 4-20-9 
 4-35-4 
 
 24 
 
 
 
 (70) 
 
 94 
 78 
 
 
 Jan. 14* 
 
 3o5 
 3o5a 
 
 0-202 
 O'lSo 
 
 269-1 
 
 170-6 
 173-5 
 
 -n-g 
 
 - 47 
 
 o 
 ('92) 
 
 '4 
 (1010) 
 
 (i3 9 5) 
 
 * Indian photo. The Areas of Spots and Facula: are expressed in Millionths of the Sun's -risible Hemisphere. t Melbourne photo. 
 
:-.- UK SUI.AH PHOTOI;HA.PHY THROUGHOUT 1878-lssi. 
 
 15 
 
 MKASI-RKS of POSITIONS and AREAS of SPOTS nnd FACUL^E upon the SUN'S DISK on PHOTOGRAPHS taken in the YKAK 1880 continued. 
 
 
 
 Dis- 
 
 
 IlEl.tOGKArHlC 
 
 SPOTS. 
 
 KACI-I..K. 
 
 
 
 Dis- 
 
 
 llri.ln..i: vi Ml. 
 
 SPOTS. 
 
 FACUUE. 
 
 Mean 
 Solar 
 Time. 
 
 No. of 
 Group, 
 and 
 Letter 
 for 
 Spot. 
 
 tance 
 from 
 Centre 
 in 
 terni< 
 of 
 Sun's 
 Kadius. 
 
 Position 
 Angle 
 from 
 Sun's 
 Axis. 
 
 
 
 
 Mean 
 Solar 
 Time. 
 
 No. of 
 Group 
 and 
 Letter 
 for 
 Spot. 
 
 tance 
 from 
 Centre 
 in 
 terms 
 of 
 Sun's 
 Uadius. 
 
 Position 
 Angle 
 from 
 
 Sun's 
 Axis. 
 
 
 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBKA 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 WHOLK 
 for each 
 Spot 
 
 (and for 
 Diiv). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMHKA 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 WHOLE 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 1880. 
 
 
 
 o 
 
 
 
 
 
 
 
 
 1880. 
 
 
 
 o 
 
 o 
 
 
 
 
 
 
 l3 d 707 
 
 302 
 
 0-982 
 
 255-6 
 
 23o-6 
 
 1 5'O 
 
 56 
 
 270 
 
 
 24 d - 9 23 
 
 
 0-778 
 
 232'7 
 
 
 
 
 
 299 
 
 
 302 
 
 0-967 
 
 264-4 
 
 224-4 
 
 -16-2 
 
 3o 
 
 '74 
 
 982 c 
 
 
 3o 7 
 
 0-688 
 
 56-8 
 
 326-1 
 
 + I7'5 
 
 
 
 6 
 
 
 
 3o3 
 
 o-6qg 
 
 335-9 
 
 171-3 
 
 -I-35-I 
 
 o 
 
 '9 
 
 233 c 
 
 
 307 
 
 0733 
 
 58-3 
 
 322-2 
 
 + 18-3 
 
 
 
 8 
 
 5l3/ 
 
 
 3o5 
 
 0-488 
 
 260-5 
 
 >79' 
 
 13-5 
 
 7 
 
 102 
 
 
 
 
 o-go3 
 
 ii9'7 
 
 
 
 
 
 I 4 3 
 
 
 3o5 
 
 0-424 
 
 249-0 
 
 174-8 
 
 -i3-o 
 
 38 
 
 I 4 5 
 
 
 
 
 0-967 
 
 114-6 
 
 
 
 
 
 84 
 
 
 3o5 
 
 0-362 
 
 243-7 
 
 170-3 
 
 -i 3-6 
 
 12 
 
 5o 
 
 
 Jan. 26 
 
 
 
 
 
 
 (o) 
 
 (H) 
 
 (lo3 9 ) 
 
 
 3o5o 
 
 o-35o 
 
 268-6 
 
 171-4 
 
 4'9 
 
 O 
 
 '4 
 
 
 
 
 
 
 
 
 
 
 
 Jan. 1 5* 
 
 
 
 
 
 
 (153) 
 
 (774) 
 
 (1216) 
 
 24-979 
 
 
 o-8o3 
 
 234-2 
 
 
 
 
 
 44 3 
 
 
 
 
 
 
 
 
 
 
 
 3o 7 
 
 0-682 
 
 56-8 
 
 325-8 
 
 + 17-3 
 
 o 
 
 6 
 
 
 14784 
 
 
 o-qo8 
 
 295-5 
 
 
 
 
 
 297 
 
 
 3o 7 
 
 0728 
 
 58-3 
 
 32 I -9 
 
 f-18'2 
 
 o 
 
 8 
 
 45*/ 
 
 
 3o5 
 
 o-6g3 
 
 255-9 
 
 180-2 
 
 -i 3-3 
 
 26 
 
 .76 
 
 5i5 
 
 
 
 o-gu 
 
 119-8 
 
 
 
 
 
 107 
 
 
 3o5 
 
 0*619 
 
 264-6 
 
 '74*4 
 
 133 
 
 98 
 
 349 
 
 
 
 
 0-962 
 
 116-2 
 
 
 
 
 
 90 
 
 
 3o5 
 
 o'56q 
 
 262-1 
 
 170-5 
 
 -14-1 
 
 2 
 
 24 
 
 
 Jan. 26 
 
 
 
 
 
 
 (o) 
 
 (H) 
 
 (1092) 
 
 
 3o6 
 
 o-3 4 3 
 
 196-8 
 
 142-9 
 
 23-9 
 
 O 
 
 9 
 
 
 
 
 
 
 
 
 
 
 
 
 3o6 
 
 0-334 
 
 189-0 
 
 140-0 
 
 24-0 
 
 4 
 
 22 
 
 
 26-042 
 
 
 0-916 
 
 240-2 
 
 
 
 
 
 269 
 
 
 
 0-970 
 
 122'0 
 
 
 
 
 
 632 
 
 
 
 0-810 
 
 122-2 
 
 
 
 
 
 49 
 
 Jan. 1 6* 
 
 
 
 
 
 
 (<3o) 
 
 (58o) 
 
 ('444) 
 
 
 
 0-883 
 
 11 6-3 
 
 
 
 
 
 69 
 
 
 
 
 
 
 
 
 
 
 Jan. 27 
 
 
 
 
 
 
 
 
 (377) 
 
 i5-g55 
 
 
 0-882 
 
 3i5'7 
 
 
 
 
 
 23 4 
 
 
 
 
 
 
 
 
 
 
 
 3o5 
 
 0-872 
 
 208-8 
 
 182-0 
 
 I2'2 
 
 ii 
 
 56 
 
 719^ 
 
 26-062 
 
 
 0*916 
 
 23g-3 
 
 
 
 
 
 394 
 
 
 3o5 
 
 0-798 
 
 267-6 
 
 174-1 
 
 -l2- 9 
 
 82 
 
 329 
 
 
 
 
 0-804 
 
 122-2 
 
 
 
 
 
 65 
 
 
 3o6 
 
 0-469 
 
 223-7 
 
 141-4 
 
 23-g 
 
 10 
 
 4' 
 
 
 
 
 0-868 
 
 116-8 
 
 
 
 
 
 82 
 
 
 
 o-8g5 
 
 12O-5 
 
 
 
 
 
 3i6 
 
 JaD. 27 
 
 
 
 
 
 
 
 
 (5 41 ) 
 
 Jan. 1 7 
 
 
 
 
 
 
 (io3) 
 
 (426) 
 
 (1269) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 27-672 
 
 
 
 
 
 
 
 
 296/7 
 
 16-040 
 
 
 0-885 
 
 314-2 
 
 
 
 
 
 240 
 
 Jan. 29* 
 
 
 
 
 
 
 () 
 
 (49) 
 
 (296) 
 
 
 3o5 
 
 0-879 
 
 268-4 
 
 181-7 
 
 -12-6 
 
 i3 
 
 78 
 
 5i3 p 
 
 
 
 
 
 
 
 
 
 
 
 3o5 
 
 0-808 
 
 267-6 
 
 I73-9 
 
 i3-o 
 
 7' 
 
 36o 
 
 
 2g-i36 
 
 3o8 
 
 0-961 
 
 67-6 
 
 238-6 
 
 -r-ig-5 
 
 8 
 
 32 
 
 401 np 
 
 
 3o6 
 
 0-478 
 
 226-6 
 
 141-9 
 
 -24-1 
 
 10 
 
 28 
 
 
 
 3o8 
 
 0-982 
 
 68-7 
 
 233-1 
 
 + 19-6 
 
 114 
 
 4 i5 
 
 
 
 
 0-887 
 
 I 21 -8 
 
 
 
 
 
 498 
 
 
 3og 
 
 0-967 
 
 104-3 
 
 233-0 
 
 16-4 
 
 48 
 
 204 
 
 532 sf 
 
 Jan. 1 7 
 
 
 
 
 
 
 (94) 
 
 (466) 
 
 (1251) 
 
 Jan. 3o 
 
 
 
 
 
 
 (170) 
 
 (65.) 
 
 (933) 
 
 17-911 
 
 3o5 
 
 0-973 
 
 267-2 
 
 1727 
 
 13-6 
 
 H 
 
 63 
 
 337 c 
 
 29*062 
 
 3o8 
 
 0-968 
 
 67-8 
 
 239-0 
 
 + 19-2 
 
 II 
 
 4' 
 
 555 n p 
 
 
 3o6 
 
 0-789 242-0 
 
 146-6 
 
 -24-7 
 
 24 
 
 88 
 
 
 
 3o8 
 
 Q'979 
 
 68-8 
 
 233-7 
 
 + 19-3 
 
 75 
 
 408 
 
 
 Jan. 19 
 
 
 
 
 
 
 (48) 
 
 (ISO 
 
 (33 7 ) 
 
 
 3og 
 
 0-966 
 
 104-6 
 
 233-2 
 
 -i5-6 
 
 27 
 
 1 83 
 
 476 ,-/ 
 
 
 
 
 
 
 
 
 
 
 Jan. 3o 
 
 
 
 
 
 
 (Hi) 
 
 (632) 
 
 (io3o) 
 
 > 7*978 
 
 3oo 
 
 0-970 
 
 267-5 
 
 172-3 
 
 i 3-3 
 
 24 
 
 85 
 
 342 c 
 
 29-921 
 
 3o8 
 
 0-898 
 
 ^4'9 
 
 238-0 
 
 + 19-2 
 
 7 
 
 26 
 
 790 n p 
 
 
 3o6 
 
 >799 242-7 
 
 146-8 
 
 -24-7 
 
 24 
 
 75 
 
 
 
 3o8 
 
 o-g33 
 
 66-3 
 
 232-5 
 
 + 19-5 
 
 97 
 
 47" 
 
 
 Jan. 19 
 
 
 
 
 
 
 (48) 
 
 (i 60) 
 
 (3 4 2) 
 
 
 3o8 
 
 0-971 
 
 66-3 
 
 226-0 
 
 + 2f2 
 
 o 
 
 5i 
 
 
 
 
 
 
 
 
 
 
 
 
 3og 
 
 o-8g3 
 
 io3-g 
 
 233-7 
 
 16-1 
 
 25 
 
 '99 
 
 433 sf 
 
 
 
 
 
 
 
 
 
 
 Jan. 3 1 
 
 
 
 
 
 
 (129) 
 
 (746) 
 
 (1223) 
 
 18-672 
 
 3o6 
 
 0-897 247-2 148-8 
 
 -22-7 
 
 3 
 
 33 
 
 88 1 n 
 
 
 
 
 
 
 
 
 
 
 
 3o6 
 
 0-849 244-2 
 
 142 3 
 
 -24-6 
 
 7 
 
 49 
 
 
 3o-653 
 
 3o8 
 
 0-824 
 
 61-2 
 
 237-9 
 
 + 19-4 
 
 9 
 
 4' 
 
 
 
 
 O'8g3 109-5 
 
 
 
 
 
 "9 
 
 
 3o8 
 
 0-862 
 
 62-8 
 
 233-4 
 
 + '97 
 
 126 
 
 56 9 
 
 i36q c 
 
 Jan. 20* 
 
 
 
 
 
 (10) 
 
 (82) 
 
 (1000) 
 
 
 3o8 
 
 0-911 
 
 64-6 
 
 226-7 
 
 + 20-2 
 
 14 
 
 94 
 
 
 
 
 
 
 
 
 
 
 
 3og 
 
 0-809 
 
 104-7 
 
 233-6 
 
 -i5-5 
 
 55 
 
 198 
 
 6i8.v/ 
 
 19-718 
 
 3o5 
 
 0-976 
 
 247-6 
 
 lOO'O 
 
 20-0 
 
 o 
 
 59 
 
 454/ 
 
 Feb. i* 
 
 
 
 
 
 
 (204) 
 
 (902) 
 
 ('987) 
 
 
 
 0-917 
 
 1 1 3-6 
 
 
 
 
 
 187 
 
 
 
 
 
 
 
 
 
 
 Jan. 21* 
 
 
 
 
 
 
 (o) 
 
 (59) 
 
 (641) 
 
 32-oog 
 
 
 0-878 
 
 294-0 
 
 
 
 
 
 224 
 
 
 
 
 
 
 
 
 
 
 
 3o8 
 
 Q-655 
 
 49'9 
 
 237-8 
 
 + 19-6 
 
 5 
 
 10 
 
 370 /* 
 
 22-784 
 
 3o6a 
 
 0-761 
 
 299-2 
 
 76-4 
 
 + I7-8 
 
 o 
 
 5 
 
 
 
 3o8 
 
 0-700 
 
 5rg 
 
 233-g 
 
 -I- 20-5 
 
 4' 
 
 184 
 
 
 
 
 '949 
 
 6 9'4 
 
 
 
 
 
 563 
 
 
 3o8 
 
 0-687 
 
 04-8 
 
 233-7 
 
 + I8-3 
 
 35 
 
 126 
 
 
 Jan. 24* 
 
 
 
 
 
 
 (o) 
 
 (5) 
 
 (563) 
 
 
 3o8 
 
 0-802 
 
 66-9 
 
 224-1 
 
 -|-22- 4 
 
 12 
 
 4 6 
 
 
 
 
 
 
 
 
 
 
 
 
 3o8 
 
 0-781 
 
 67 5 220-4 
 
 + 20-4 
 
 7 
 
 18 
 
 
 23-679 
 
 
 0-883 
 
 65-8 
 
 
 
 
 
 699 
 
 
 3og 
 
 0*604 
 
 107-4 233-3 
 
 16-4 
 
 3o 
 
 168 
 
 
 Jan. a5* 
 
 
 
 
 
 
 
 
 (699) 
 
 Feb. 2 
 
 
 
 
 
 (i3o) 
 
 (5 4 2) 
 
 (3<M.) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 Indian photo. The Areas of Spots and Faculx are expressed in Millionths of the Sun's visible Hemisphere. 
 
16 
 
 REDUCTION OF SOLAR PHOTOGEAPHS THROUGHOUT 1878-1881. 
 
 MEASURES of POSITIONS and AREAS of SPOTS and FACUL^E upon the SUN'S DISK on PHOTOGRAPHS taken in the YEAR 1880 continued. 
 
 
 
 Dis- 
 
 tance 
 
 
 HELIOGHAPHIC 
 
 SPOTS. 
 
 FACUL.S;. 
 
 
 
 Dis- 
 
 
 HELIOGRAPHIC 
 
 SPOTS. 
 
 FACULJ,. 
 
 Mean 
 Solar 
 Time. 
 
 No. of 
 Group, 
 and 
 Letter 
 for 
 Spot. 
 
 from 
 Centre 
 in 
 terms 
 of 
 Sun's 
 Radius. 
 
 Position 
 Angle 
 from 
 Sun's 
 Axis. 
 
 
 
 
 Mean 
 Solar 
 Time. 
 
 No. of 
 Group, 
 and 
 Letter 
 for 
 Spot. 
 
 t iincc 
 from 
 Outre 
 in 
 terms 
 of 
 Sun's 
 Radius. 
 
 Position 
 Angle 
 from 
 Sun's 
 Axis. 
 
 
 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBRA 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 WHOLE 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day)- 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBRA 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 WHOLE 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 j 
 
 1880. 
 
 
 
 
 
 o 
 
 
 
 
 
 
 1880. 
 
 
 
 o 
 
 o 
 
 o 
 
 
 
 
 32 d> oi6 
 
 
 0-881 
 
 294-3 
 
 
 
 
 
 226 
 
 36 d 742 
 
 3o8 
 
 o'6og 
 
 3 1 8-5 
 
 233-0 
 
 + 21-2 
 
 28 
 
 164 
 
 
 
 3o8 
 
 0-65 1 
 
 49'8 
 
 238-0 
 
 + I9-5 
 
 5 
 
 9 
 
 549 
 
 
 3o8 
 
 0-587 
 
 317-2 
 
 232-4 
 
 + I9-5 
 
 13 
 
 53 
 
 
 
 3o8 
 
 0-697 
 
 52-0 
 
 234-0 
 
 + 20-4 
 
 3 4 
 
 III 
 
 
 
 3og 
 
 0-458 
 
 249-3 
 
 233-7 
 
 -i5-i 
 
 28 
 
 1 20 
 
 
 
 3o8 
 
 0-683 
 
 54-7 
 
 234-0 
 
 + 18-2 
 
 18 
 
 124 
 
 
 
 3lb 
 
 0-633 
 
 317 
 
 185-8 
 
 + 26-4 
 
 7 
 
 332 
 
 
 
 3o8 
 
 0794 
 
 55-8 
 
 224-8 
 
 + 22-1 
 
 
 
 39 
 
 
 
 3lo 
 
 0-682 
 
 32-8 
 
 182-6 
 
 + 2q-o 
 
 6 
 
 i5 
 
 
 
 3o8 
 
 0776 
 
 57-5 
 
 225-8 
 
 + 20-1 
 
 5 
 
 14 
 
 
 
 3io 
 
 0-668 
 
 35-g 
 
 i8r5 
 
 + 26-9 
 
 o 
 
 10 
 
 UlSsf 
 
 
 3og 
 
 O'6o2 
 
 108-0 
 
 233-4 
 
 1 5-8 
 
 2 9 
 
 1 55 
 
 
 Feb. 7 
 
 
 
 
 
 
 (I 4 5) 
 
 (694) 
 
 (1118) 
 
 Feb. 2 
 
 
 
 
 
 
 (9i) 
 
 (522) 
 
 (775) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 38-882 
 
 3o8 
 
 0-855 
 
 299-5 
 
 23rg 
 
 + 20-9 
 
 28 
 
 i So 
 
 916 c 
 
 
 
 
 
 
 
 
 
 
 
 3o8 
 
 0-847 
 
 297-7 
 
 23i'7 
 
 + lg-2 
 
 4 
 
 17 
 
 
 
 
 
 
 
 
 
 
 
 
 3og 
 
 o-8o5 
 
 255-g 
 
 233-1 
 
 15-2 
 
 20 
 
 71 
 
 
 32-823 
 
 3o8 
 
 o-55o 
 
 37-7 
 
 238-2 
 
 + '9*9 
 
 o 
 
 16 
 
 
 
 3ii 
 
 o-5 10 
 
 324-5 
 
 '97'4 
 
 + 18-2 
 
 20 
 
 '47 
 
 
 
 3o8 
 
 o-5g5 
 
 41-2 
 
 234-4 
 
 + 20-9 
 
 29 
 
 170 
 
 
 
 3u 
 
 0-471 
 
 332-5 
 
 192-5 
 
 4-iS'i 
 
 22 
 
 99 
 
 
 
 3o8 
 
 0-576 
 
 44-3 
 
 23 4 -i 
 
 + 18-7 
 
 29 
 
 i38 
 
 
 
 3io 
 
 0-567 
 
 35 1 -3 
 
 184-8 
 
 + 2 7'4 
 
 4 6 
 
 255 
 
 
 
 3o8 
 
 0-602 
 
 4^9 
 
 232-8 
 
 + 20-I 
 
 o 
 
 46 
 
 
 
 3io 
 
 0-575 
 
 357-2 
 
 181-1 
 
 4-28-3 
 
 
 
 ii 
 
 
 
 3o8 
 
 0-678 
 
 48-6 
 
 226-2 
 
 + 21-3 
 
 o 
 
 48 
 
 
 
 3io 
 
 o-565 
 
 355-4 
 
 i82-g 
 
 + 27-5 
 
 5 
 
 20 
 
 
 
 3og 
 
 0-48 1 
 
 urg 
 
 233-5 
 
 -i5-3 
 
 34 
 
 172 
 
 
 Feb. g* 
 
 
 
 
 
 
 (45) 
 
 (770) 
 
 (9i6) 
 
 
 3io 
 
 Q'97-3 
 
 5g-6 
 
 1 88-0 
 
 + 27-6 
 
 25 
 
 25 7 
 
 
 
 
 
 
 
 
 
 
 
 
 
 o-g68 
 
 io2'5 
 
 
 
 
 
 184 
 
 3g-6i6 
 
 
 0-888 
 
 3oo - 2 
 
 
 
 
 
 925 
 
 Feb. 3* 
 
 
 
 
 
 
 ("7) 
 
 (847) 
 
 (.84) 
 
 
 
 0-870 
 
 25r8 
 
 
 
 
 
 785 
 
 
 
 
 
 
 
 
 
 
 
 3og 
 
 0-894 
 
 255-6 
 
 233-5 
 
 i 5-8 
 
 o 
 
 48 
 
 
 
 
 
 
 
 
 
 
 
 
 3o8 
 
 0-928 
 
 2g5'6 
 
 232-g 
 
 + 20-7 
 
 33 
 
 I 12 
 
 
 34-001 
 
 3o8 
 
 0-486 
 
 19-2 
 
 233-8 
 
 4-20-g 
 
 36 
 
 1 38 
 
 
 
 3n 
 
 0-622 
 
 3io-8 
 
 99'2 
 
 + 18-1 
 
 24 
 
 119 
 
 
 
 3o8 
 
 0-458 
 
 217 
 
 233-3 
 
 + 18-8 
 
 24 
 
 IOI 
 
 
 
 3ii 
 
 o-5g6 
 
 312-4 
 
 197-0 
 
 + '77 
 
 o 
 
 6 
 
 
 
 3o8 
 
 0-485 
 
 23-2 
 
 23i'9 
 
 + 2O'I 
 
 4 
 
 21 
 
 
 
 3ii 
 
 o-552 
 
 317-3 
 
 192-6 
 
 + I7-7 
 
 22 
 
 125 
 
 
 
 3o8 
 
 0-556 
 
 32-4 
 
 224-9 
 
 + 2I-g 
 
 3 
 
 '9 
 
 
 
 3io 
 
 0-612 
 
 336-5 
 
 185-5 
 
 + 27-6 
 
 24 
 
 148 
 
 
 
 3og 
 
 o-236 
 
 i32-6 
 
 233-3 
 
 1 5'4 
 
 33 
 
 1 36 
 
 
 
 3io 
 
 0-602 
 
 341-0 
 
 182-4 
 
 + 28-1 
 
 O 
 
 6 
 
 
 
 3io 
 
 0-904 
 
 55-6 
 
 186-7 
 
 + 27-4 
 
 68 
 
 296 
 
 9'i */ 
 
 Feb. lof 
 
 
 
 
 
 
 (10$) 
 
 (56 4 ) 
 
 (1710) 
 
 
 
 0-880 
 
 ioi-3 
 
 
 
 
 
 263 
 
 
 
 
 
 
 
 
 
 
 Feb. 4 
 
 
 
 
 
 
 (168) 
 
 (7ii) 
 
 (U74) 
 
 40-737 
 
 
 o-g3 9 
 
 249-4 
 
 
 
 
 
 627 
 
 
 
 
 
 
 
 
 
 
 
 3o8 
 
 0-987 
 
 292-3 
 
 23l'2 
 
 + 20-7 
 
 21 
 
 90 
 
 
 
 
 
 
 
 
 
 
 
 
 3ii 
 
 0-770 
 
 3oo-5 
 
 198-1 
 
 + 18-2 
 
 44 
 
 228 
 
 
 34-969 
 
 3o8 
 
 0-463 
 
 35 4 -6 
 
 233-5 
 
 + 20-9 
 
 3o 
 
 125 
 
 
 
 3n 
 
 0700 
 
 3o3-g 
 
 igi-3 
 
 + 17-6 
 
 i5 
 
 76 
 
 
 
 3o8 
 
 0-432 
 
 355-6 
 
 232-g 
 
 + 19-0 
 
 23 
 
 72 
 
 
 
 3io 
 
 0-708 
 
 321-6 
 
 183-6 
 
 + 27-8 
 
 29 
 
 182 
 
 
 
 3o8 
 
 0-443 
 
 358-g 
 
 23 1-4 
 
 + 19-8 
 
 4 
 
 3i 
 
 
 
 3io 
 
 0-66 1 
 
 33o-5 
 
 175-6 
 
 + 28-7 
 
 
 
 12 
 
 
 
 3og 
 
 o-i63 
 
 ig6-3 
 
 233-6 
 
 -i 5-4 
 
 37 
 
 146 
 
 
 
 3io 
 
 o-633 
 
 330-4 
 
 '74'4 
 
 + 27-0 
 
 
 
 13 
 
 
 
 3io 
 
 0-814 
 
 5o-2 
 
 186-5 
 
 + 26-9 
 
 53 
 
 285 
 
 707 sf 
 
 
 3io 
 
 0-641 
 
 334-5 
 
 172-2 
 
 + 28-g 
 
 5 
 
 43 
 
 
 
 
 0-785 
 
 103-2 
 
 
 
 
 
 271 
 
 Feb. n* 
 
 
 
 
 
 
 (H4) 
 
 (544) 
 
 (627) 
 
 Feb. 5 
 
 
 
 
 
 
 (147) 
 
 (65 9 ) 
 
 (978) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 42-011 
 
 3ii 
 
 0-908 
 
 294-2 
 
 198-9 
 
 4i8-6 
 
 20 
 
 116 
 
 406 c 
 
 
 
 
 
 
 
 
 
 
 
 3n 
 
 0-884 
 
 2g4-o 
 
 ig5-8 
 
 + I7-5 
 
 2 
 
 16 
 
 
 34-987 
 
 3o8 
 
 0-462 
 
 35 4 -2 
 
 233-5 
 
 + 20-9 
 
 37 
 
 iSa 
 
 
 
 3u 
 
 0-856 
 
 2g5-6 
 
 192-1 
 
 + 17-8 
 
 8 
 
 40 
 
 
 
 3o8 
 
 0-432 
 
 355-2 
 
 232-8 
 
 + 19-0 
 
 25 
 
 87 
 
 
 
 3io 
 
 0-834 
 
 3 1 0-8 
 
 183-8 
 
 + 28-2 
 
 >7 
 
 5o 
 
 667 c 
 
 
 3o8 
 
 0-444 
 
 358-8 
 
 23l'2 
 
 + 19-8 
 
 5 
 
 36 
 
 
 
 3io 
 
 0-785 
 
 314-5 
 
 I77-4 
 
 + 28-1 
 
 7 
 
 13 
 
 
 
 3o8 
 
 0-482 
 
 I2'O 
 
 224-5 
 
 + 21-7 
 
 2 
 
 12 
 
 
 
 3io 
 
 0-763 
 
 314-6 
 
 I75-6 
 
 + 27-0 
 
 
 
 1 1 
 
 
 
 3og 
 
 0-164 
 
 196-1 
 
 233-3 
 
 -i 5-4 
 
 2g 
 
 HI 
 
 
 
 3io 
 
 o-749 
 
 3 1 9-2 
 
 172-0 
 
 + 28-9 
 
 ll 
 
 23 
 
 
 
 3io 
 
 0-814 
 
 So- 1 
 
 186-4 
 
 + 26-9 
 
 70 
 
 281 
 
 H44*/ 
 
 Feb. 12 
 
 
 
 
 
 
 (65) 
 
 (269) 
 
 (1073) 
 
 
 
 0-843 
 
 104-3 
 
 
 
 
 
 '99 
 
 
 
 
 
 
 
 
 
 
 Feb. 5 
 
 
 
 
 
 
 068) 
 
 (709) 
 
 (i343) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 42-060 
 
 3u 
 
 0-916 
 
 293-7 
 
 igg-S 
 
 + I8-5 
 
 20 
 
 191 
 
 336 c 
 
 
 
 
 
 
 
 
 
 
 
 3n 
 
 0-890 
 
 2g3'6 
 
 196-0 
 
 + 17-4 
 
 4 
 
 22 
 
 
 35780 
 
 3o8 
 
 o-5o3 
 
 335-6 
 
 233-4 
 
 + 20-9 
 
 3i 
 
 i38 
 
 
 
 3u 
 
 o-865 
 
 2g5'2 
 
 192-6 
 
 4-17-8 
 
 o 
 
 39 
 
 
 
 3o8 
 
 0-477 
 
 335-1 
 
 232-8 
 
 + 9'2 
 
 20 
 
 69 
 
 
 
 3io 
 
 0-842 
 
 3io-o 
 
 184-6 
 
 4-28-1 
 
 36 
 
 io5 
 
 854 c 
 
 
 3o8 
 
 0-474 
 
 338-g 
 
 23l'0 
 
 f iq-q 
 
 4 
 
 3o 
 
 
 
 3ic 
 
 0-792 
 
 314-1 
 
 177-6 
 
 + 28-2 
 
 
 
 H 
 
 
 
 3og 
 
 0-270 
 
 234-3 
 
 233-7 
 
 -i 5-3 
 
 26 
 
 1 36 
 
 
 
 3io 
 
 0-772 
 
 3i3-8 
 
 176'! 
 
 + 27-0 
 
 
 
 7 
 
 
 
 3io 
 
 0-730 
 
 43-8 
 
 186-4 
 
 -f-26-5 
 
 74 
 
 3io 
 
 99 6s / 
 
 
 3io 
 
 0769 
 
 3l8-8 
 
 172-4 
 
 + 29-2 
 
 5 
 
 33 
 
 
 Feb. 6* 
 
 
 
 
 
 
 (i 55) 
 
 (683) 
 
 (996) 
 
 Feb. 12 
 
 
 
 
 
 (65) 
 
 (421) 
 
 (1190) 
 
 * Indian photo. The Areas of Spots and Faculse are expressed in Millionths of the Sun's visible Hemisphere. t Melbourne photo. 
 
. REDUCTION OF SOLAR PHOTOGRAPHS THROUGHOUT 1878-1881. 
 
 MKASI iiKS of POSITIONS and AKEAS of SI-UTS and FACI i. i: U|M>U tlie SUN'S DISK on PIIOTOKKAIMIS laken in tlie YKAU 1880 continued. 
 
 
 tanee 
 
 llri mult u-iiie 
 
 SPOTS. 
 
 !' \ . 
 
 
 
 Dis- 
 tanee 
 
 
 HKMOOHAPIIIC 
 
 SIMMS. 
 
 FA< i 
 
 
 .No. ot 
 
 Croup 
 and 
 
 for 
 
 in 
 terms 
 of 
 
 Sun's 
 
 Position 
 Angle 
 
 from 
 Sun's 
 Axis. 
 
 
 
 
 Mean 
 Solar 
 Time. 
 
 No. o! 
 Group 
 
 and 
 Letter 
 for 
 
 Spot 
 
 from 
 Outre 
 in 
 terms 
 
 of 
 
 Sun's 
 
 I'ositioi 
 An^'le 
 from 
 Sun's 
 Axis. 
 
 
 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBRA 
 
 for each 
 Spot 
 (and for 
 
 Area of 
 \VIKII.K Alv: 
 breach ,.^'J 
 
 (and for t-''" 1 ' 
 
 Lonffi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 
 UMBRA 
 
 for each 
 
 Bpol 
 
 (and fin- 
 
 Area of 
 \VIIOLl' 
 
 for each 
 Spot 
 (and for 
 
 : for 
 
 Group 
 
 1 for 
 
 1 1 , 
 
 
 
 Radius. 
 
 
 Day). 
 
 Day). 
 
 
 
 Kiidius 
 
 
 
 
 Day). 
 
 Day). 
 
 i M\ ) 
 
 l8So. 
 
 
 o 
 
 o 
 
 o 
 
 
 
 
 1880. 
 
 
 
 o 
 
 o 
 
 
 
 
 
 42^-937 
 
 
 0-872 260-2 
 
 
 
 
 i58 
 
 54 li -g56 
 
 312 
 
 O-543 
 
 1 35-5 
 
 3org 
 
 -29-2 
 
 32 
 
 160 
 
 
 
 3n 
 
 0-972 290-7 
 
 '9 8 '9 
 
 + 18-2 
 
 34 
 
 126 
 
 473 '/ 
 
 
 312 
 
 0-617 
 
 1 33- 1 
 
 296-1 
 
 3ro 
 
 I 
 
 '7 
 
 
 
 3i i 
 
 O'goo 2qo'3 
 
 ig5'2 
 
 + I7-0 
 
 
 
 40 
 
 
 Feb. 25 
 
 
 
 
 
 
 (33) 
 
 (182) 
 
 
 
 3io 
 
 O-g I I 
 
 OOO'O 
 
 i83'2 
 
 + 28-3 
 
 o 
 
 28 
 
 g65 sj 
 
 
 
 
 
 
 
 
 
 
 
 OIO 
 
 0-873 
 
 306-7 
 
 '777 
 
 + 27-3 
 
 o 
 
 12 
 
 
 55-oSg 
 
 312 
 
 o'523 
 
 i36-2 
 
 3oro 
 
 -28-6 
 
 26 
 
 167 
 
 
 
 OIO 
 
 0-864 
 
 ^07-6 
 
 176-3 
 
 + 27-0 
 
 1 
 
 i5 
 
 
 
 312 
 
 0-600 
 
 1 33-7 
 
 290-7 
 
 307 
 
 6 
 
 16 
 
 
 
 3io 
 
 o-83i 
 
 311-7 
 
 170-9 
 
 + 28-8 
 
 o 
 
 '9 
 
 
 Feb. 20 
 
 
 
 
 
 
 (32) 
 
 ('83) 
 
 
 
 
 0-933 
 
 1 16-0 
 
 
 
 
 
 289 
 
 
 
 
 
 
 
 
 
 
 Feb. 1 3 
 
 
 
 
 
 
 (35) 
 
 (240) 
 
 (1880) 
 
 55-961 
 
 312 
 
 0-420 
 
 i5r5 
 
 3oi-3 
 
 -28-6 
 
 28 
 
 '49 
 
 
 
 
 
 
 
 
 
 
 
 
 3l2 
 
 0-487 
 
 147-0 
 
 296-5 
 
 3o-g 
 
 2 
 
 10 
 
 
 42'g55 
 
 
 0-874 
 
 25g'3 
 
 
 
 
 
 3i6 
 
 Feb. 26 
 
 
 
 
 
 
 (3o) 
 
 (5g) 
 
 
 
 3u 
 
 '974 
 
 290-7 
 
 lgg-2 
 
 + 18-3 
 
 39 
 
 120 
 
 2 99 s f 
 
 
 
 
 
 
 
 
 
 
 
 on 
 
 0-9.11) 
 
 2go'3 
 
 igo'8 
 
 + I7'2 
 
 8 
 
 38 
 
 
 56-o57 
 
 3l2 
 
 0-414 
 
 i53'4 
 
 3oro 
 
 -28-7 
 
 28 
 
 161 
 
 
 
 3io 
 
 0-917 
 
 000-4 
 
 i83'g 
 
 + 28-6 
 
 o 
 
 3g 
 
 610 sf 
 
 
 312 
 
 0-480 
 
 148-3 
 
 2g6-i 
 
 3o-g 
 
 3 
 
 20 
 
 
 
 3io 
 
 0*878 
 
 3o6'5 
 
 178-2 
 
 + 27-4 
 
 o 
 
 i3 
 
 
 Feb. 26 
 
 
 
 
 
 
 (3i) 
 
 (181) 
 
 
 
 3io 
 
 0-871 
 
 3o7'3 
 
 177-0 
 
 4-27-6 
 
 o 
 
 16 
 
 
 
 
 
 
 
 
 
 
 
 
 3io 
 
 o-83g 
 
 3iro 
 
 I7ro 
 
 + 29-1 
 
 
 
 i5 
 
 
 56-go8 
 
 312 
 
 0-370 
 
 177-3 
 
 3oo-8 
 
 -28-8 
 
 32 
 
 i38 
 
 
 
 
 o-g2 7 
 
 116-8 
 
 
 
 
 
 343 
 
 
 
 o-8g5 
 
 62-8 
 
 
 
 
 
 296 
 
 Feb. 1 3 
 
 
 
 
 
 
 (47) 
 
 (240 
 
 (i568) 
 
 
 
 0-898 
 
 114-8 
 
 
 
 
 
 I 7 8 
 
 
 
 
 
 
 
 
 
 
 Feb. 27 
 
 
 
 
 
 
 (32) 
 
 (i38) 
 
 (474) 
 
 40-560 
 
 
 o'go5 
 
 3o6'9 
 
 
 
 
 
 2273 
 
 
 
 
 
 
 
 
 
 
 
 
 0-861 
 
 nt, i 
 
 
 
 
 
 808 
 
 56- 9 5i 
 
 312 
 
 0-370 
 
 177-8 
 
 3oo-5 
 
 -28-8 
 
 28 
 
 145 
 
 
 Feb. I4f 
 
 
 
 
 
 
 
 
 (3o8i) 
 
 
 
 o-goS 
 
 64-3 
 
 
 
 
 
 264 
 
 
 
 
 
 
 
 
 
 
 
 
 o-go3 
 
 IIO'O 
 
 
 
 
 
 384 
 
 44-666 
 
 
 o-g63 
 
 3o5'7 
 
 
 
 
 
 866 
 
 Feb. 27 
 
 
 
 
 
 
 (28) 
 
 (146) 
 
 (648) 
 
 
 
 o-8g2 
 
 63-g 
 
 
 
 
 
 i g3 
 
 
 
 
 
 
 
 
 
 
 Feb. i5 
 
 
 
 
 
 
 
 
 (io5g) 
 
 57721 
 
 312 
 
 o-3g6 
 
 202-0 
 
 3oo-g 
 
 -28-6 
 
 54 
 
 153 
 
 
 
 
 
 
 
 
 
 
 
 
 
 o-83g 
 
 107-8 
 
 
 
 
 
 1 58 
 
 4.V573 
 
 
 0-8 ii 
 
 332-1 
 
 
 
 
 
 7'7 
 
 
 
 0-863 
 
 6l-2 
 
 
 
 
 
 411 
 
 
 
 o-i>85 
 
 i5o-6 
 
 
 
 
 
 666 
 
 
 
 o-ggo 
 
 1 1 2-3 
 
 
 
 
 
 284 
 
 . i6f 
 
 
 
 
 
 
 
 
 (i383) 
 
 Feb. 28* 
 
 
 
 
 
 
 (54) 
 
 (,53) 
 
 (853) 
 
 080 
 
 
 o'go2 
 
 246-2 
 
 
 
 
 
 84 
 
 58-668 
 
 312 
 
 0-498 
 
 22O'6 
 
 300-4 
 
 28-9 
 
 5i 
 
 49 
 
 i88 
 
 
 
 0-922 
 
 557 
 
 
 
 
 
 161 
 
 
 
 0-838 
 
 57'6 
 
 
 
 
 
 43 1 
 
 Feb. 1 8 
 
 
 
 
 
 
 
 
 (245) 
 
 
 
 0-941 
 
 iii'4 
 
 
 
 
 
 978 
 
 
 
 
 
 
 
 
 
 
 Feb. 2g* 
 
 
 
 
 
 
 (01) 
 
 (H9) 
 
 (1597) 
 
 00-gOO 
 
 312 
 
 0-969 
 
 ii8-3 
 
 3o3-8 
 
 29' i 
 
 21 
 
 66 
 
 248 / 
 
 
 
 
 
 
 
 
 
 
 Feb. 21 
 
 
 
 
 
 
 (21) 
 
 (66) 
 
 (248) 
 
 60-028 
 
 312 
 
 0-675 
 
 234-5 
 
 2gg-5 
 
 -28-7 
 
 32 
 
 i38 
 
 
 
 
 
 
 
 
 
 
 
 
 312 
 
 0-675 
 
 3oi-8 
 
 2 9 7'2 
 
 4- 1 5-o 
 
 9 
 
 18 
 
 
 5 1 '673 
 
 3l2 
 
 0-720 
 
 3o8'i 
 
 48-0 
 
 + 207 
 
 O 
 
 8 
 
 226 s 
 
 
 312 
 
 0-647 
 
 3o5 - 7 
 
 2g3-g 
 
 4- 16-0 
 
 8 
 
 12 
 
 
 
 312 
 
 0-919 
 
 118-8 
 
 3o3'g 
 
 -29-2 
 
 33 
 
 1 83 
 
 
 
 
 0-841 
 
 I I 2'5 
 
 
 
 
 
 640 
 
 
 312 
 
 o - g62 
 
 120-7 
 
 295-4 
 
 -3i-4 
 
 4 
 
 4 5 
 
 706 c 
 
 Mar. i 
 
 
 
 
 
 
 (49) 
 
 (168) 
 
 (640) 
 
 Feb. 22* 
 
 
 
 
 
 
 (37) 
 
 (236) 
 
 (932) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 60-806 
 
 312 
 
 0773 
 
 239-1 
 
 299-2 
 
 -28-2 
 
 45 
 
 l6 7 
 
 082 */ 
 
 52797 
 
 
 0-871 
 
 2427 
 
 
 
 
 
 ,67 
 
 
 3l2 
 
 0-790 
 
 290-8 
 
 2 97'9 
 
 H-iS-3 
 
 3 
 
 35 
 
 118 n 
 
 
 
 0-834 
 
 2gg'2 
 
 
 
 
 
 401 
 
 
 3i2 0-704 
 
 2gg-g 
 
 2g3-5 
 
 4-16-8 
 
 2 
 
 20 
 
 
 
 3l2 
 
 0-810 
 
 120-9 
 
 3o3-6 
 
 29-0 
 
 37 
 
 207 
 
 
 
 0-753 
 
 114-7 
 
 
 
 
 
 459 
 
 
 3l2 
 
 0-871 
 
 I 21-0 
 
 296-5 
 
 -3o-3 
 
 9 
 
 02 
 
 g33 c 
 
 
 0-808 
 
 3g'o 
 
 
 
 
 
 2 7 3 
 
 
 312 
 
 0-882 
 
 122-2 
 
 2g5-i 
 
 3r6 
 
 2 
 
 22 
 
 
 
 
 0-865 
 
 6r5 
 
 
 
 
 
 335 
 
 Feb. 23* 
 
 
 
 
 
 
 (48) 
 
 (28l) 
 
 (1001) 
 
 
 
 0-870 
 
 io3-i 
 
 
 
 
 
 '74 
 
 
 
 
 
 
 
 
 
 
 .Mar. 2* 
 
 
 
 
 
 
 (So) 
 
 (222) 
 
 ('74') 
 
 53-784 
 
 
 0-909 
 
 243-5 
 
 
 
 
 
 i3o 
 
 61-668 
 
 312 
 
 0-864 
 
 241-6 
 
 298-6 
 
 -28-1 
 
 35 
 
 i83 
 
 5i 9 / 
 
 
 
 o'go i 
 
 2g5'i 
 
 
 
 
 
 234 
 
 
 312 
 
 o-8g3 
 
 2go 4 6 
 
 298-9 
 
 + '47 
 
 4 
 
 33 
 
 349 c 
 
 
 312 
 
 0-690 
 
 120-3 
 
 3o2-g 
 
 29-2 
 
 33 
 
 1 58 
 
 
 
 312 
 
 0-855 
 
 294-8 
 
 293-3 
 
 
 
 
 3o 
 
 
 
 312 
 
 0-770 
 
 123-7 
 
 295-5 
 
 3o-2 
 
 3 
 
 26 
 
 492 c 
 
 
 
 o-g63 
 
 5 4'9 
 
 
 
 
 
 706 
 
 Feb. 24* 
 
 
 
 
 
 
 (36) 
 
 (184) 
 
 (856) 
 
 Mar. 3* 
 
 
 
 
 
 
 (3 9 ) 
 
 (246) 
 
 (i58 4 ) 
 
 * Indian photo. The Areas of Spots and FacuUe are expressed in Millionths of the Sun's visihle Hemisphere. t Melbourne photo. 
 
 64893. 
 
18 
 
 REDUCTION OF SOLAR PHOTOGRAPHS THROUGHOUT 1878-1881. 
 
 MEASURES of POSITIONS and AREAS of SPOTS and FACULA: upon the SUN'S DISK on PHOTOGRAPHS taken in the YEAR 1880 continued. 
 
 
 
 Dis- 
 tance 
 
 
 HELIOGRAPHIC 
 
 SPOTS. 
 
 FACULIE. 
 
 
 
 Dis- 
 tance 
 
 
 HELIOGRAPHIC 
 
 SPOTS. 
 
 FACIJL.K. 
 
 
 No. of 
 
 f,. , 
 
 11 'i.' 
 
 
 
 
 
 *Jo. of 
 
 
 r> 
 
 
 
 
 Mean 
 Solar 
 Time. 
 
 Group, 
 and 
 Letter 
 for 
 Spot. 
 
 iroin 
 Centre 
 in 
 terms 
 of 
 Sun's 
 Radius. 
 
 t osition 
 Angle 
 from 
 Sun's 
 Axis. 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBRA 
 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 WHOLE 
 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 Mean 
 Solar 
 Time. 
 
 Group, 
 and 
 Letter 
 for 
 Spot. 
 
 irom 
 Centre 
 in 
 terms 
 of 
 Sun's 
 Radius. 
 
 t osition 
 Angle 
 from 
 
 Sun's 
 Axis. 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 CTMBRA 
 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 WHOLE 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 I88o. 
 
 
 
 
 
 o 
 
 o 
 
 
 
 
 I88o. 
 
 
 
 o 
 
 o 
 
 
 
 
 
 
 6 2 d - 9 53 
 
 
 0-968 
 
 289-3 
 
 
 
 
 
 269 
 
 6g d -g52 
 
 3l3 
 
 0-957 
 
 248-1 
 
 204-5 
 
 23'O 
 
 
 
 4 3 
 
 406 n 
 
 
 312 
 
 0-960 
 
 242-7 
 
 297-4 
 
 28-2 
 
 9 
 
 I 7 5 
 
 '69 sf 
 
 
 3i3 
 
 0-944 
 
 249-2 
 
 201-g 
 
 22-0 
 
 o 
 
 25 
 
 
 
 
 O'go6 
 
 49' 2 
 
 
 
 
 
 538 
 
 
 3i 4 
 
 0-740 
 
 3o5'g 
 
 169-6 
 
 + 20-2 
 
 7 
 
 78 
 
 3 49 up 
 
 Mar. 4 
 
 
 
 
 
 
 (9) 
 
 (I 7 5) 
 
 (976) 
 
 
 3i 4 
 
 o-652 
 
 3i 3-6 
 
 1 6o - 2 
 
 + 20-4 
 
 4 
 
 21 
 
 
 
 
 
 
 
 
 
 
 
 
 
 0-924 
 
 5 7 -5 
 
 
 
 
 
 362 
 
 
 
 
 
 
 
 
 
 
 Mar. 1 1 
 
 
 
 
 
 
 (21) 
 
 (l6 7 ) 
 
 (1117) 
 
 63-Qio 
 
 
 0-973 
 
 288-2 
 
 
 
 
 
 2 9 5 
 
 
 
 
 
 
 
 
 
 
 
 312 
 
 0-966 
 
 242-5 
 
 298-2 
 
 28-4 
 
 16 
 
 79 
 
 121 if 
 
 70-083 
 
 3i3 
 
 0-964 
 
 247-6 
 
 204-3 
 
 23-5 
 
 
 
 49 
 
 486 n 
 
 
 
 0*899 
 
 48-8 
 
 
 
 
 
 216 
 
 
 3i3 
 
 0-746 
 
 248-6 
 
 200-5 
 
 22-5 
 
 o 
 
 -39 
 
 
 Mar. 4 
 
 
 
 
 
 
 (16) 
 
 (79) 
 
 (632) 
 
 
 3i 4 
 
 0-758 
 
 304-6 
 
 169-8 
 
 + 20-1 
 
 23 
 
 86 
 
 417 np 
 
 
 
 
 
 
 
 
 
 
 
 3i 4 
 
 0-670 
 
 3irq 
 
 160-4 
 
 + 20-4 
 
 2 
 
 19 
 
 
 
 
 
 
 
 
 
 
 
 
 
 0-912 
 
 56-5 
 
 
 
 
 
 2g5 
 
 64-062 
 
 
 o;8i3 
 
 41*0 
 
 
 
 
 
 233 
 
 Mar. ii 
 
 
 
 
 
 
 (25) 
 
 (-9-3) 
 
 (1198) 
 
 
 
 0-968 
 
 5o - 7 
 
 
 
 
 
 171 
 
 
 
 
 
 
 
 
 
 
 Mar. 5 
 
 
 
 
 
 
 
 
 (404) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 70-978 
 
 
 o-85g 
 
 3 1 4-3 
 
 
 
 
 
 254 
 
 
 
 
 
 
 
 
 
 
 
 314 
 
 0-869 
 
 298-0 
 
 171-1 
 
 + 20-0 
 
 '7 
 
 53 
 
 1 55 c 
 
 64744 
 
 
 0-876 
 
 3o3'2 
 
 
 
 
 
 485 
 
 
 814 
 
 0-838 
 
 298-5 
 
 167-6 
 
 + I 9 -I 
 
 
 
 6 
 
 
 
 3126 
 
 0-341 
 
 235-8 
 
 2i5-g 
 
 -17*9 
 
 21 
 
 5 4 
 
 
 
 314 
 
 0-807 
 
 3oi-g 
 
 i63-3 
 
 + 20*4 
 
 20 
 
 5 4 
 
 
 
 
 0-766 
 
 3 7 -2 
 
 
 
 
 
 764 
 
 
 314 
 
 0-783 
 
 3o3'7 
 
 i6o-5 
 
 -f-20'6 
 
 O 
 
 '4 
 
 
 
 
 0-929 
 
 477 
 
 
 
 
 
 55 1 
 
 
 
 0-843 
 
 5l-2 
 
 
 
 
 
 132 
 
 Mar. 6* 
 
 
 
 9 
 
 
 
 (21) 
 
 (54) 
 
 (1800) 
 
 Mar. 12 
 
 
 
 
 
 
 (37) 
 
 (i*7) 
 
 (541) 
 
 65-;i 6 
 
 
 0-842 
 
 3o3'2 
 
 
 
 
 
 816 
 
 7 1 -o56 
 
 
 0-864 
 
 3i3-5 
 
 
 
 
 
 35g 
 
 
 3l2& 
 
 0-537 
 
 248-3 
 
 217-4 
 
 -17-4 
 
 H 
 
 47 
 
 
 
 314 
 
 0-876 
 
 297-6 
 
 171-0 
 
 + 19-9 
 
 26 
 
 84 
 
 352 c 
 
 
 
 0-742 
 
 287 
 
 
 
 
 
 834 
 
 
 314 
 
 0-847 
 
 299-0 
 
 167-3 
 
 + -9'9 
 
 
 
 9 
 
 
 
 
 0-877 
 
 43-6 
 
 
 
 
 
 4 3 1 
 
 
 314 
 
 0-814 
 
 3oi-2 
 
 1 63-2 
 
 + 20-1 
 
 29 
 
 7i 
 
 
 
 
 0-945 
 
 64-4 
 
 
 
 
 
 107 
 
 
 314 
 
 0-792 
 
 002-9 
 
 160-6 
 
 + 20-4 
 
 
 
 36 
 
 
 Mar. 7* 
 
 
 
 
 
 
 (14) 
 
 (47) 
 
 (2188) 
 
 
 
 0-832 
 
 5ro 
 
 
 
 
 
 ig3 
 
 
 
 
 
 
 
 
 
 
 Mar. 12 
 
 
 
 
 
 
 (55) 
 
 (200) 
 
 (9 4) 
 
 66779 
 
 
 o'goo 
 
 3oo-o 
 
 
 
 
 
 3go 
 
 
 
 
 
 
 
 
 
 
 
 
 o-8i5 
 
 320-7 
 
 
 
 
 
 636 
 
 7''9 6 9 
 
 
 0-922 
 
 3o8-3 
 
 
 
 
 
 376 
 
 
 3iz6 
 
 0-721 
 
 253-1 
 
 217-9 
 
 -17-1 
 
 II 
 
 47 
 
 297 sp 
 
 
 314 
 
 o-g55 
 
 2g3'6 
 
 171-9 
 
 + 20-0 
 
 
 
 60 
 
 019 c 
 
 
 314 
 
 0-478 
 
 i5-o 
 
 164-4 
 
 + 20-3 
 
 4 
 
 4 3 
 
 
 
 314 
 
 o-g35 
 
 zg5'2 
 
 167-9 
 
 + 20-5 
 
 o 
 
 68 
 
 
 
 314 
 
 0-487 
 
 21-6 
 
 160-9 
 
 + 2O-O 
 
 7 
 
 65 
 
 
 
 314 
 
 0-904 
 
 296-7 
 
 162-8 
 
 + 20-4 
 
 21 
 
 92 
 
 
 
 
 0-806 
 
 35-3 
 
 
 
 
 
 298 
 
 
 314 
 
 0-883 
 
 297-1 
 
 1 60-0 
 
 + 19-8 
 
 
 
 H 
 
 
 
 
 0-947 
 
 64-0 
 
 
 
 
 
 333 
 
 
 3i5 
 
 0-484 
 
 343-0 
 
 II2'2 
 
 + 20-4 
 
 2 4 
 
 64 
 
 
 Mar. 8* 
 
 
 
 
 
 
 (22) 
 
 (i 55) 
 
 ('9 5 4) 
 
 
 3i5 
 
 0-464 
 
 346*0 
 
 1 1 o-3 
 
 + 19-5 
 
 O 
 
 3 
 
 
 
 
 
 
 
 
 
 
 
 
 3i5 
 
 0-463 
 
 348-2 
 
 109-2 
 
 + 197 
 
 o 
 
 5 
 
 
 
 
 
 
 
 
 
 
 
 
 3i5 
 
 0-485 
 
 35o-i 
 
 108-6 
 
 + 21-3 
 
 5 
 
 10 
 
 
 67-823 
 
 
 0-909 
 
 3o3-8 
 
 
 
 
 
 49 6 
 
 
 3i6 
 
 0-964 
 
 106-7 
 
 2 9'9 
 
 1 8-0 
 
 20 
 
 7 5 
 
 206 sf 
 
 
 3i2i 
 
 0-862 
 
 264-4 
 
 218-2 
 
 -17-1 
 
 6 
 
 '7 
 
 58 if 
 
 Mar. 1 3 
 
 
 
 
 
 
 (70) 
 
 (39 
 
 (1101) 
 
 
 314 
 
 0-476 
 
 342-9 
 
 166-6 
 
 + "9'9 
 
 25 
 
 116 
 
 
 
 
 
 
 
 
 
 
 
 314 
 
 0-475 
 
 347-6 
 
 164-3 
 
 + 20-4 
 
 o 
 
 27 
 
 
 
 
 
 
 
 
 
 
 
 314 
 
 0-466 
 
 353-g 
 
 i6ri 
 
 + 20-3 
 
 "9 
 
 67 
 
 
 72-o55 
 
 
 0-933 
 
 3o7'5 
 
 
 
 
 
 266 
 
 
 
 0-872 
 
 60*9 
 
 
 
 
 
 47' 
 
 
 3i 4 
 
 0-966 
 
 293-3 
 
 173-2 
 
 + 20-2 
 
 O 
 
 63 
 
 2g5 c 
 
 Mar. g* 
 
 
 
 
 
 
 (40) 
 
 (227) 
 
 (.5 4 8) 
 
 
 314 
 
 0-941 
 
 294-8 
 
 167-9 
 
 -(-20-4 
 
 O 
 
 21 
 
 
 
 
 
 
 
 
 
 
 
 314 
 
 0-914 
 
 296-9 
 
 1 63"o 
 
 + 21-0 
 
 o 
 
 24 
 
 
 
 
 
 
 
 
 
 
 
 3i 4 
 
 0-892 
 
 296-7 
 
 160- 1 
 
 -f-lg-q 
 
 o 
 
 6 
 
 69-092 
 
 3i3 
 
 0-880 
 
 246-6 
 
 2o3-3 
 
 23-9 
 
 3 
 
 1 1 
 
 228 KJ9 
 
 
 3i5 
 
 0-489 
 
 040-6 
 
 1 12-3 
 
 + 20-3 
 
 3i 
 
 61 
 
 
 3i3 
 
 0-867 
 
 248-1 
 
 201-7 
 
 22-5 
 
 
 
 9 
 
 
 
 3i5 
 
 0-469 
 
 343-6 110-4 
 
 + 19-5 
 
 
 
 3 
 
 
 014 
 
 0-617 
 
 3i5'5 
 
 1687 
 
 + 197 
 
 23 
 
 9 3 
 
 
 
 3i5 
 
 0-467 
 
 047-2 108-6 
 
 + 19-9 
 
 
 
 4 
 
 
 314 
 
 o-555 
 
 325-3 
 
 i6ro 
 
 + 20-3 
 
 4 
 
 18 
 
 
 
 3i5 
 
 0-490 
 
 348-2 
 
 io8-5 
 
 -21-4 
 
 o 
 
 9 
 
 
 
 0-971 
 
 60-0 
 
 
 
 
 
 I qO 
 
 
 3i6 
 
 o'94 6 
 
 1 06-8 
 
 3o"2 
 
 -18-2 
 
 o 
 
 5i 23qsf 
 
 Mar. 10 
 
 
 
 
 
 
 (So) 
 
 (i3i) 
 
 ( 4 "i8) 
 
 Mar. 1 3 
 
 
 
 
 
 
 (31) 
 
 (242) (800) 
 
 * Indian photo. The Areas of Spots and Faculie are expressed in Millionths of the Sun's visible Hemisphere. 
 
REDUCTION OF SOLAR PHOTOGRAPHS THROUGHOUT 1878-1881. 
 
 19 
 
 MI:ASI KKS of POSITIONS and AKKAS of SPOTS ai:<l K\ci i i: upon tin- Sex's DISK on PIIOTOGKAPHS taken in the YEAR 1880 continual. 
 
 
 
 
 
 IlKl.lo.. i:\i-nir 
 
 Seni-. 
 
 FACCL.K. 
 
 
 
 Dis- 
 
 
 IlKUoMCVrillC 
 
 SPOTS. 
 
 FACI:L<E. 
 
 Time. 
 
 No. of 
 (Jronp, 
 anil 
 letter 
 for 
 Spot. 
 
 taiiee 
 from 
 Centre 
 in 
 terms 
 
 Sun's 
 Kadias. 
 
 Position 
 Annie 
 from 
 Snn'.- 
 Axis. 
 
 
 
 
 Mean 
 Solar 
 Time. 
 
 No. of 
 Group, 
 and 
 
 Letter 
 for 
 Spot. 
 
 tance 
 from 
 Centre 
 in 
 terms 
 of 
 Sun's 
 Radius. 
 
 I'osition 
 Angle 
 from 
 Sun's 
 Axis. 
 
 
 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 
 DMBRA 
 
 for each 
 Spot 
 (and for 
 
 * 
 
 WHOM: 
 
 for eaeli 
 Spot 
 (and for 
 
 Day). 
 
 Area for 
 eaeh 
 
 Group 
 
 (and for 
 Day). 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMHKA 
 for eaeli 
 Spot 
 (and for 
 Day). 
 
 Area of 
 WI10I.K 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 
 Group 
 
 (and for 
 Day). 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 1880. 
 
 
 
 
 
 o 
 
 o 
 
 
 
 
 1880. 
 
 
 
 o 
 
 o 
 
 
 
 
 
 
 72^664 
 
 
 o'gSq 
 
 3o5-g 
 
 
 
 
 
 656 
 
 83 ll -924 
 
 
 O'go3 
 
 70-2 
 
 
 
 
 
 '94 
 
 
 
 0-809 
 
 317-8 
 
 
 
 
 
 89 
 
 
 
 o'g-oo 
 
 110-8 
 
 
 
 
 
 204 
 
 
 
 0-8 1 5 
 
 327-0 
 
 
 
 
 
 116 
 
 Mar. 25 
 
 
 
 
 
 
 
 
 (3g8) 
 
 
 3i 4 
 
 0-988 
 
 291-8 
 
 171-8 
 
 + 20-1 
 
 8 
 
 83 
 
 
 
 
 
 
 
 
 
 
 
 
 314 
 
 0-978 
 
 292-7 
 
 168-5 
 
 + 20-4 
 
 26 
 
 75 
 
 720 c 
 
 83-gg3 
 
 
 0-811 
 
 64-2 
 
 
 
 
 
 110 
 
 
 314 
 
 0-954 
 
 294-4 
 
 162-4 
 
 + 2O'7 
 
 7 
 
 84 
 
 
 
 
 0-860 
 
 I 12'5 
 
 
 
 
 
 l52 
 
 
 3io 
 
 o-55 i 
 
 326'q 
 
 u3'i 
 
 + 20-7 
 
 36 
 
 140 
 
 
 Mar. 25 
 
 
 
 
 
 
 
 
 (262) 
 
 
 3io 
 
 o-5i6 
 
 329-9 
 
 i io"3 
 
 4-I9*6 
 
 2 
 
 23 
 
 
 
 
 
 
 
 
 
 
 
 
 3i5 
 
 o'Soo 
 
 333-1 
 
 I I O'O 
 
 + 22-4 
 
 O 
 
 2 9 
 
 
 85-717 
 
 3i6a 
 
 0-408 
 
 '94'' 
 
 288-8 
 
 -29-9 
 
 3 
 
 6 
 
 
 
 3i5 
 
 o-5og 
 
 333-4 
 
 108-4 
 
 + 20-0 
 
 2 
 
 42 
 
 
 
 3i6a 
 
 0-422 
 
 188-4 
 
 286-3 
 
 3r3 
 
 2 
 
 12 
 
 
 
 3io 
 
 O-528 
 
 335-7 
 
 107-9 
 
 + 21-8 
 
 3 
 
 17 
 
 
 
 
 0-979 
 
 n 5-8 
 
 
 
 
 
 449 
 
 
 3i6 
 
 0-891 
 
 106-2 
 
 
 -'77 
 
 27 
 
 76 
 
 
 Mar. 27* 
 
 
 
 
 
 
 (5) 
 
 (18) 
 
 (449) 
 
 
 3i6 
 
 0-928 
 
 i o6-3 
 
 25-4 
 
 -I 7 -8 
 
 
 
 ii 
 
 5o4/ 
 
 
 
 
 
 
 
 
 
 
 Mar. 14* 
 
 
 
 
 
 
 (121) 
 
 (59) 
 
 (2090) 
 
 87-675 
 
 3i6a 
 
 0-638 
 
 234-1 
 
 291-8 
 
 -2 7 -3 
 
 4 
 
 '4 
 
 
 
 
 
 
 
 
 
 
 
 
 3i6a 
 
 0-628 
 
 232-0 
 
 290-4 
 
 28-2 
 
 8 
 
 28 
 
 
 6 7 5 
 
 
 0-887 
 
 3 1 g-o 
 
 
 
 
 
 124 
 
 
 3i6a 
 
 0-607 
 
 226-2 
 
 286-8 
 
 3o-5 
 
 8 
 
 4 5 
 
 
 
 3i5 
 
 0-680 
 
 3ir6 
 
 u3-8 
 
 + 20-8 
 
 3q 
 
 235 
 
 
 
 
 0-853 
 
 ii 5-5 
 
 
 
 
 
 758 
 
 
 3i5 
 
 0-633 
 
 3 1 3-g 
 
 109-9 
 
 + 19-8 
 
 18 
 
 5i 
 
 
 Mar. 29* 
 
 
 
 
 
 
 (20) 
 
 (87) 
 
 (758) 
 
 
 3i6 
 
 0759 
 
 106-9 
 
 3i'7 
 
 -17-4 
 
 24 
 
 7 2 
 
 
 
 
 
 
 
 
 
 
 
 Mar. l5* 
 
 
 
 
 
 
 (81) 
 
 (358) 
 
 (124) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 88-812 
 
 3i6a 
 
 0787 
 
 241-4 
 
 291-9 
 
 26-4 
 
 21 
 
 60 
 
 
 70-046 
 
 3io 
 
 0-840 
 
 299-3 
 
 u 3-g 
 
 + 19-8 
 
 35 
 
 161 
 
 223 nj 
 
 
 3i6a 
 
 0-748 
 
 232-5 
 
 285-5 
 
 -3i-7 
 
 3 
 
 5 4 
 
 
 
 3i6 
 
 0-017 
 
 111-1 
 
 32-1 
 
 -17-0 
 
 i3 
 
 44 
 
 
 
 3i 7 
 
 '949 
 
 69-3 
 
 173-2 
 
 + 17-3 
 
 5 4 
 
 2 7 5 
 
 499 c 
 
 Mar. 16 
 
 
 
 
 
 
 (4 8 ) 
 
 (200) 
 
 (223) 
 
 Mar.So* 
 
 
 
 
 
 
 (78; 
 
 (38 9 ) 
 
 (499) 
 
 70-082 
 
 3i5 
 
 o-85o 
 
 2997 
 
 114-3 
 
 -T-2O-6 
 
 20 
 
 1 53 
 
 1 1 8 nj 
 
 
 
 
 
 
 
 
 
 
 
 3i6 
 
 0-529 
 
 I I 1-2 
 
 3r5 
 
 -17-1 
 
 10 
 
 5q 
 
 
 8g-8o3 
 
 3i6 
 
 o-goo 
 
 244-1 
 
 292-4 
 
 -26-1 
 
 2 
 
 i3 
 
 
 16 
 
 
 
 
 (35) 
 
 (212) 
 
 (118) 
 
 
 3 1 6a 
 
 0-863 
 
 241-8 
 
 287-1 
 
 -27-5 
 
 12 
 
 47 
 
 775 c 
 
 
 
 
 
 
 
 
 
 3i6 
 
 0-855 
 
 z35-6 
 
 284-9 
 
 -32-5 
 
 2 
 
 24 
 
 
 75-933 
 
 3i5 
 
 0-927 
 
 295-4 
 
 1 14-3 
 
 20-3 
 
 24 
 
 I2 4 
 
 340 nf 
 
 
 3i 7 
 
 0-862 
 
 65-8 
 
 173-2 
 
 -17-0 
 
 34 
 
 2o5 
 
 io33 nf 
 
 
 3i6 
 
 0-369 
 
 Il8'5 
 
 3i-5 
 
 -16-8 
 
 i5 
 
 02 
 
 
 Mar. 3 1* 
 
 
 
 
 . 
 
 
 (5o) 
 
 (289) 
 
 (1808) 
 
 Mar. 17 
 
 
 
 
 
 
 (39) 
 
 (176) 
 
 (3 4 o) 
 
 
 
 
 
 
 
 
 
 
 75-976 
 
 3i5 
 
 0-927 
 
 294-9 
 
 1 1 3-g 
 
 + 19-8 
 
 21 
 
 121 
 
 3 1 1 / 
 
 grooi 
 
 
 0-949 
 
 240-8 
 
 
 
 
 
 624 
 
 
 3i6 
 
 0-362 
 
 I I g-5 
 
 3 1 -o 
 
 16-9 
 
 i5 
 
 48 
 
 
 
 3i7 
 
 0-719 
 
 57-5 
 
 173-1 
 
 + 17-8 
 
 27 
 
 i38 
 
 268^1 
 
 Mar. i - 
 
 
 
 
 
 
 (36) 
 
 
 (3u) 
 
 Apr. i 
 
 
 
 
 
 (27) 
 
 (i38) 
 
 (892) 
 
 77-107 
 
 3i5 
 
 0-991 
 
 291-9 
 
 114-5 
 
 + 20-4 
 
 o 
 
 '74 
 
 3o 7 ii/ 
 
 
 
 
 
 
 
 
 
 
 
 3i6 
 
 0-174 
 
 1 55'g 
 
 3r6 
 
 -16-1 
 
 6 
 
 33 
 
 
 g i -o 1 8 
 
 
 0-957 
 
 240-7 
 
 
 
 
 
 536 
 
 Mar. 18 
 
 
 
 
 
 
 (6) 
 
 (207) 
 
 (007) 
 
 
 3i7 
 
 0-948 
 
 236-8 
 
 283-g 
 
 -33-5 
 
 o 
 
 16 
 
 
 
 
 
 
 
 
 
 
 
 
 3i 7 
 
 0-716 
 
 57-2 
 
 I73-3 
 
 4-17-9 
 
 35 
 
 137 
 
 285 p 
 
 
 
 
 
 
 
 
 
 
 Apr. i 
 
 
 
 
 
 
 (35) 
 
 (i 53) 
 
 (821) 
 
 77'99' 
 
 
 0-823 
 
 3 io-5 
 
 
 
 
 
 184 
 
 
 
 
 
 
 
 
 
 
 
 3i6 0-207 
 
 2 1 8-3 
 
 3r8 
 
 -16-2 
 
 
 
 13 
 
 
 
 
 
 
 
 
 
 
 
 
 o-g3o 
 
 107-0 
 
 
 
 
 
 85 
 
 gi-725 
 
 
 o-g83 
 
 23g-2 
 
 
 
 
 
 321 
 
 Mai 
 
 
 
 
 
 
 (o) 
 
 (i3) 
 
 (269) 
 
 
 3i8 
 
 0-397 
 
 3-5 
 
 200-6 
 
 + 16-9 
 
 
 
 18 
 
 
 
 
 Second photograph on this day omitted. 
 
 
 
 3i8 
 
 0-403 
 
 8-4 
 
 igS-S 
 
 + 17'' 
 
 2 
 
 i5 
 
 
 
 
 
 
 
 
 
 
 
 3i 7 
 
 o-6i5 
 
 48-6 
 
 173-1 
 
 + I8-3 
 
 35 
 
 1 60 
 
 
 79-058 
 
 
 o-go6 
 
 304-0 
 
 
 
 
 
 2o5 
 
 Apr. 2* 
 
 
 
 
 
 
 (37) 
 
 ('93) 
 
 (321) 
 
 
 
 0-8 1 1 
 
 107-8 
 
 
 
 
 
 99 
 
 
 
 
 
 
 
 
 
 
 .Mar. 20 
 
 
 
 
 
 
 
 
 (3o 4 ) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 g2-gi5 
 
 , o-g 1 1 
 
 297-3 
 
 
 
 
 
 99 
 
 
 
 
 
 
 
 
 
 
 
 3i8 
 
 0-469 
 
 324-0 
 
 2o3-g 
 
 + 16-2 
 
 9 
 
 24 
 
 
 79-081 
 
 
 0-920 
 
 3o3-8 
 
 
 
 
 
 3i8 
 
 
 3i8 
 
 0-462 
 
 33o-6 
 
 2OO-g 
 
 + 17'6 
 
 13 
 
 28 
 
 
 
 
 o-8i5 
 
 io8-5 
 
 
 
 
 
 182 
 
 
 3i8 
 
 0-435 
 
 333-g 
 
 198-8 
 
 + 16-8 
 
 
 
 3 
 
 
 Mar. 20 
 
 
 o-g/3 
 
 117-2 
 
 
 
 
 
 118 
 (618) 
 
 Apr. 3 
 
 3i7 
 
 0-467 
 
 28-6 
 
 173-7 
 
 + 1 8-0 
 
 24 
 (46) 
 
 i3 7 
 (192) 
 
 (99) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 * Indian photo. The Areas of Spots and Faculae are expressed in Millionths of the Sun's visible Hemisphere. 
 
 C 2 
 
20 
 
 REDUCTION OF SOLAR PHOTOGRAPHS THROUGHOUT 1878-1 S81. 
 
 MEASURES of POSITIONS and AREAS of SPOTS and FACULJK upon the SUN'S DISK on PnoToonAriis taken in the YKAK 1880 cnntittxnl. 
 
 
 
 Dis- 
 tance 
 
 
 HELIOGRAPHIC 
 
 SPOTS. 
 
 FACUL.>E. 
 
 
 
 Dis- 
 tance 
 
 
 HELIOGBAPIIK: 
 
 SPOTS. 
 
 FA c v L.I:. 
 
 Mean 
 
 Solar 
 Time. 
 
 No. of 
 3roup, 
 and 
 Letter 
 for 
 Spot. 
 
 from 
 Centre 
 in 
 terms 
 of 
 Sim's 
 ladius. 
 
 Position 
 A ngle 
 from 
 Sun's 
 Axis. 
 
 
 
 
 Mean 
 Solar 
 Time. 
 
 No. of 
 Group, 
 and 
 Letter 
 for 
 Spot. 
 
 from 
 Centre 
 in 
 terms 
 of 
 Sun's 
 Radius. 
 
 Position 
 Angle 
 from 
 
 Sun's 
 Axis. 
 
 
 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBRA 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 WHOLE 
 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Arm of 
 UMHRA 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 WHOLE 
 for each 
 Spot 
 (and for 
 Day). 
 
 Ai'i'a for 
 each 
 Group 
 
 i for 
 Day). 
 
 1880. 
 
 
 
 o 
 
 
 
 o 
 
 
 
 
 1880. 
 
 
 
 
 
 o 
 
 o 
 
 
 
 
 g3 d 'oio 
 
 
 O'g 1 3 
 
 296-5 
 
 
 
 
 
 "7" 
 
 loi d -gig 
 
 3ig 
 
 0-574 
 
 245-3 
 
 101-6 
 
 -i 8-6 
 
 8 
 
 33 
 
 
 
 3l8 
 
 0-481 
 
 322-4 
 
 203-7 
 
 H-16-3 
 
 16 
 
 49 
 
 
 
 3ig 
 
 0-533 
 
 243-0 
 
 98-5 
 
 18-6 
 
 
 
 10 
 
 
 
 3l8 
 
 0-470 
 
 328-4 
 
 200-9 
 
 + 17-5 
 
 16 
 
 3i 
 
 
 
 3ig 
 
 O'Soq 
 
 243-8 
 
 96-9 
 
 -"7'9 
 
 i3 
 
 36 
 
 
 
 3i8 
 
 0-442 
 
 33i-5 
 
 1987 
 
 + 16-7 
 
 o 
 
 4 
 
 
 
 3ig 0-478 
 
 238-8 
 
 93-9 
 
 -19-4 
 
 38 
 
 ig5 
 
 
 
 3i 7 
 
 
 25-6 
 
 174-0 
 
 + 18-2 
 
 24 
 
 121 
 
 
 
 0-902 
 
 I23'O 
 
 
 
 
 
 58 
 
 Apr. 3 
 
 
 
 
 
 
 (56) 
 
 (205) 
 
 ("7") 
 
 Apr. 12 
 
 
 
 
 
 
 (59) 
 
 ('74) 
 
 (58) 
 
 94-952 
 
 
 0-946 
 
 245-8 
 
 
 
 
 
 124 
 
 iorg5o 
 
 3ig 
 
 o-58o 
 
 245-1 
 
 ior6 
 
 -18-8 
 
 20 
 
 45 
 
 
 
 
 0-685 
 
 242-8 
 
 
 
 
 
 3g5 
 
 
 3ig 
 
 0-535 
 
 2 4 3-8 
 
 98-3 
 
 -i 8-5 
 
 O 
 
 7 
 
 
 
 3i8 
 
 0-767 
 
 297-5 
 
 2o5'4 
 
 + 16-4 
 
 5 
 
 7 3o8c 
 
 
 3ig 
 
 o-5 12 
 
 244-6 
 
 96-9 -177 
 
 IO 
 
 36 
 
 
 
 3i8 
 
 0730 
 
 3or6 
 
 20 rg 
 
 + 17-5 
 
 6 
 
 i3 
 
 
 
 3ig 
 
 '479 
 
 23 9 - 4 
 
 g3-8 
 
 -19-2 
 
 4 3 
 
 "99 
 
 
 
 3i 7 
 
 0-469 
 
 33 1 "3 
 
 174-0 
 
 + 18-2 
 
 32 
 
 124 
 
 
 
 
 0-855 
 
 119-2 
 
 
 
 
 
 72 
 
 
 3"7 
 
 0-487 
 
 335-4 
 
 172-6 
 
 + 20-3 
 
 i3 
 
 53 
 
 
 Apr. 12 
 
 
 
 
 
 
 (73) 
 
 (287) 
 
 (72) 
 
 
 
 0-840 
 
 6o-5 
 
 
 
 
 
 2og 
 
 
 
 
 
 
 
 
 
 
 
 
 o-8g4 
 
 117-8 
 
 
 
 
 
 72 
 
 
 
 
 
 
 
 
 
 
 Apr. 5 
 
 
 
 
 
 
 (56) 
 
 (>97) 
 
 (1108) 
 
 I02'g62 
 
 
 0-834 
 
 302'0 
 
 
 
 
 
 23 7 
 
 
 
 
 
 
 
 
 
 
 
 3ig 
 
 0-751 
 
 249-1 
 
 102-9 
 
 ig-3 
 
 6 
 
 1 1 
 
 
 
 
 
 
 
 
 
 
 
 
 3lg 
 
 0-726 
 
 249-1 
 
 100-7 
 
 i8-g 
 
 4 
 
 "9 
 
 
 go - o83 
 
 
 0-927 
 
 245-0 
 
 
 
 
 
 i5o 
 
 
 3ig 
 
 0-705 
 
 248-2 
 
 98-8 
 
 -19-2 
 
 
 
 6 
 
 
 
 
 0-706 
 
 240-8 
 
 
 
 
 
 338 
 
 
 3ig 
 
 o-68g 
 
 249-4 
 
 97'7 
 
 -18-1 
 
 36 
 
 72 
 
 
 
 3i8 
 
 0782 
 
 296-8 
 
 205-2 
 
 + 16-4 
 
 o 
 
 7 
 
 283 c 
 
 
 3ig 
 
 0-640 
 
 249-1 
 
 9 3-8 
 
 -17-5 
 
 4 
 
 9 
 
 
 
 3i8 
 
 0-748 
 
 3oo'3 
 
 2OT2 
 
 + 17-6 
 
 o 
 
 13 
 
 
 
 3ig 
 
 0-633 
 
 246-1 
 
 9 2 7 
 
 i g-3 
 
 34 
 
 107 
 
 
 
 3"7 
 
 0-485 
 
 328-5 
 
 174-1 
 
 + 18-4 
 
 25 
 
 io5 
 
 
 Apr. 1 3 
 
 
 
 
 
 
 (84) 
 
 (224) 
 
 ( 2 37) 
 
 
 3i 7 
 
 0-504 
 
 332-3 
 
 I73-I 
 
 + 20-5 
 
 1 1 
 
 64 
 
 
 
 
 
 
 
 
 
 
 
 
 
 0-837 
 
 60-8 
 
 
 
 
 
 198 
 
 
 
 
 
 
 
 
 
 
 
 
 0-889 
 
 n8'o 
 
 
 
 
 
 58 
 
 103-675 
 
 3ig 
 
 0-836 
 
 25o-o 
 
 101-5 
 
 "97 
 
 4 
 
 5i 
 
 
 Apr. 5 
 
 
 
 
 
 
 (36) 
 
 (189) 
 
 (1027) 
 
 
 3ig 
 
 0-799 
 
 250-2 
 
 977 
 
 -19-1 
 
 9 
 
 60 
 
 700 c 
 
 
 
 
 
 
 
 
 
 
 
 3ig 
 
 0-751 
 
 25o'5 
 
 q3'2 
 
 i 8-2 
 
 2 
 
 7 
 
 
 
 
 
 
 
 
 
 
 
 
 3ig 
 
 0-740 
 
 247-9 
 
 gi-8 
 
 ~'9'9 
 
 32 
 
 92 
 
 
 g6'gi6 
 
 
 o-goo 
 
 291-0 
 
 
 
 
 
 192 
 
 
 3<9 
 
 0-694 
 
 249-1 
 
 88-i 
 
 -i 8-3 
 
 I 
 
 6 
 
 
 
 
 o'goi 
 
 247-7 
 
 
 
 
 
 485 
 
 
 
 o-g58 
 
 II2-2 
 
 
 
 
 
 271 
 
 
 
 0-872 
 
 2I2'2 
 
 
 
 
 
 99 
 
 Apr. 14* 
 
 
 
 
 
 
 (48) 
 
 (2,6) 
 
 (1021) 
 
 
 3i 7 
 
 0-737 
 
 302-7 
 
 I75-3 
 
 + 18-9 
 
 34 
 
 166 
 
 
 
 
 
 
 
 
 
 
 
 Apr. 7 
 
 
 
 
 
 
 (34) 
 
 (166) 
 
 (776) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 104-786 
 
 
 o'g35 
 
 2g5'7 
 
 
 
 
 
 5 7 
 
 
 
 
 
 
 
 
 
 
 
 3ig 
 
 o-947 
 
 25l'0 
 
 102-4 
 
 ig-8 
 
 IO 
 
 54 
 
 
 96'977 
 
 
 0-944 
 
 290-5 
 
 
 
 
 
 21 I 
 
 
 3ig .o-gig 
 
 25 1-7 
 
 97-5 
 
 i8-g 
 
 10 
 
 40 
 
 I 125 C 
 
 
 
 0-878 
 
 245-8 
 
 
 
 
 
 362 
 
 
 3ig 
 
 o-8q3 
 
 262-4 
 
 93-8 
 
 18-1 
 
 o 
 
 22 
 
 
 
 317 
 
 0-724 
 
 3o3-i 
 
 I73-3 
 
 + 18-6 
 
 44 
 
 192 
 
 
 
 3ig 
 
 0-877 
 
 25o-6 
 
 9'7 
 
 ig-6 
 
 4 
 
 '9 
 
 
 Apr. 7 
 
 
 
 
 
 
 (44) 
 
 ("92) 
 
 (573) 
 
 
 
 0-871 
 
 II2-2 
 
 
 
 
 
 312 
 
 
 
 
 
 
 
 
 
 
 Apr. 1 5* 
 
 
 
 
 
 
 (24) 
 
 (1 4 5) 
 
 ("494) 
 
 98-000 
 
 
 o-g5i 
 
 247-5 
 
 
 
 
 
 344 
 
 
 
 
 
 
 
 
 
 
 
 3i7 
 
 o-85g 
 
 296-0 
 
 74'4 
 
 + 19-1 
 
 o 
 
 24 
 
 3g3 c 
 
 
 
 
 
 
 
 
 
 
 
 
 o'85g 
 
 296-4 
 
 '74'4 
 
 -r-ig-o 
 
 24 
 
 93 
 
 
 io5'g46 
 
 3ig 
 
 o-g85 
 
 25r8 
 
 96-2 
 
 i8-g 
 
 
 
 42 
 
 325 
 
 
 
 '974 
 
 ii8-3 
 
 
 
 
 
 64 
 
 Apr. 1 6 
 
 
 
 
 
 
 (o) 
 
 (42) 
 
 (325) 
 
 Apr. 8 
 
 
 
 
 
 
 (24) 
 
 ("17) 
 
 (801) 
 
 
 
 
 
 
 
 
 
 
 q8-o53 
 
 o-g56 
 
 246-7 
 
 
 
 
 
 3i5 
 
 io5-g74 
 
 3ig 
 
 0-993 
 
 25i-8 
 
 gg-2 
 
 -.87 
 
 o 
 
 35 
 
 408 nf 
 
 3i 7 
 
 0-867 
 
 295-9 
 
 174-8 
 
 + 18-9 
 
 o 
 
 "7 
 
 45g c 
 
 Apr. 1 6 
 
 
 
 
 
 
 (o) 
 
 (35) 
 
 (48) 
 
 
 3"7 
 
 0-867 
 
 2q6'O 
 
 174-8 
 
 4-ig-o 
 
 17 
 
 7' 
 
 
 
 
 
 
 
 
 
 
 
 
 
 0-945 
 
 li8-5 
 
 
 
 
 
 3i 
 
 io6-gio 
 
 
 0'973 
 
 I l6'2 
 
 
 
 
 
 3oo 
 
 Apr. 8 
 
 
 
 
 
 (7) 
 
 (88) 
 
 t,8o5) 
 
 Apr. 17 
 
 
 
 
 
 
 
 (3oo) 
 
 
 
 
 
 
 
 
 
 io6'g5g 
 
 
 0-97" 
 
 69-2 
 
 
 
 
 
 36 7 
 
 98-754. 317 
 
 0-929 
 
 292-6 
 
 '747 
 
 + I8-5 
 
 17 
 
 78 
 
 474 
 
 
 
 0-971 
 
 1 17-0 
 
 
 
 
 
 242 
 
 Apr. g* ( 
 
 
 
 
 (-7) 
 
 (78) 
 
 (474) 
 
 Apr. 17 
 
 
 
 
 
 
 
 
 (609) 
 
 * Indian photo. The Areas of Spots and Facute are expressed in Millionth? of the Sun's visible Hemisphere. 
 
REDUCTION OF SOLAR PHOTOGRAPHS THROUGHOUT 
 
 21 
 
 - ..!' POSITIONS and AHEAS of SPOTS nn.l F.vcfL.i-: upon tin- Si (fa DISK on I'linTocKAriis t.-ikrn in the Vi:\i: 1SSO ,<>! inuetl. 
 
 
 
 Dis- 
 
 
 HEI.IOGRAPHIC 
 
 S 1H ITS. 
 
 FAUUUE. 
 
 
 
 Dis- 
 
 
 111 U'M.KU'IIIC 
 
 Si-di -. 
 
 I'M: ri,.!-:. 
 
 Mean 
 Time. 
 
 ( iroup, 
 and 
 
 Letter 
 
 lor 
 Spot. 
 
 from 
 Centre 
 
 in 
 terms 
 
 of 
 BOB'S 
 Radios. 
 
 Position 
 Auple 
 from 
 Sun's 
 A\i>. 
 
 
 
 
 Moan 
 
 Solar 
 
 Time. 
 
 No. of 
 Group, 
 
 and 
 Letter 
 for 
 Spot. 
 
 tance 
 from 
 (.'cum- 
 in 
 terms 
 of 
 Sun's 
 Radius. 
 
 Position 
 
 A null' 
 from 
 Sun's 
 Axis. 
 
 
 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBRA 
 for each 
 
 Spot 
 
 (and for 
 Day). 
 
 Area of 
 
 WHOLE 
 for each 
 Spot 
 
 (and for 
 Day). 
 
 Aiva for 
 
 each 
 
 Group 
 (and for 
 Day). 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 DMBRA 
 for each 
 
 Spot 
 
 (and for 
 Day). 
 
 Area of 
 
 WIIOLK 
 
 Spot 
 (and for 
 
 Day). 
 
 Area for 
 each 
 Group 
 
 (and for 
 
 Day). 
 
 1880. 
 
 
 
 o 
 
 o 
 
 Q 
 
 
 
 
 l88o. 
 
 
 
 o 
 
 O 
 
 o 
 
 
 
 
 io8 d -gio 
 
 
 0-870 
 
 247-5 
 
 
 
 
 
 1 56 
 
 Ii7 d -o8g 
 
 
 0' 9 24 
 
 294-2 
 
 
 
 
 
 167 
 
 
 
 O'82C) 
 
 60-3 
 
 
 
 
 l52 
 
 
 
 0-866 
 
 302'0 
 
 
 
 
 
 64 
 
 Apr. 19 
 
 
 
 
 
 
 
 
 (3o8) 
 
 
 
 0-824 
 
 23g-5 
 
 
 
 
 
 204 
 
 
 
 
 
 
 
 
 
 
 
 
 o- 7 35 
 
 218-2 
 
 
 
 
 
 56 
 
 109-976 
 
 
 o-qSq 
 o-856 
 
 247-8 
 242-3 
 
 
 
 
 
 132 
 
 66 
 
 
 320 
 320 
 
 0-621 
 0-698 
 
 47 -5 
 5rg 
 
 IgS'S 
 igi-8 
 
 + 2I-O 
 + 22-0 
 
 o 
 33 
 
 4' 
 1 65 
 
 23go/ 
 
 
 
 0-714 
 
 120-8 
 
 
 
 
 
 134 
 
 
 32O 
 
 0-723 
 
 56-i 
 
 188-4 
 
 4-20-4 
 
 16 
 
 7 5 
 
 
 
 
 0-853 
 
 132-3 
 
 
 
 
 
 258 
 
 
 32O 
 
 07-57 
 
 57-9 
 
 186-6 
 
 + I9-8 
 
 i 
 
 26 
 
 
 
 
 0-807 
 
 I IO'2 
 
 
 
 
 
 I2g 
 
 
 320 
 
 0-750 
 
 09- 1 
 
 180-1 
 
 + iq-5 
 
 o 
 
 5 4 
 
 
 Apr. 20 
 
 
 
 
 
 
 
 
 (7 '9) 
 
 
 320 
 
 0-773 
 
 5g'9 
 
 182-9 
 
 + 19-8 
 
 i3 
 
 118 
 
 
 
 
 
 
 
 
 
 
 
 
 320 
 
 0-827 
 
 64-1 
 
 176-6 
 
 + I8-5 
 
 42 
 
 240 
 
 
 109-991 
 
 
 0-908 
 
 250-2 
 
 
 
 
 
 234 
 
 Apr. 27 
 
 
 
 
 
 
 (no) 
 
 (7 '9) 
 
 (2 9 3l) 
 
 
 0-840 240*2 
 
 
 
 
 
 1 85 
 
 
 
 
 
 
 
 
 
 
 
 0-686 125-3 
 
 
 
 
 
 212 
 
 
 
 
 
 
 
 
 
 
 
 0-859 1 33-3 
 
 
 
 
 
 26 7 
 
 117-800 
 
 
 o-8g5 
 
 242-4 
 
 
 
 
 
 37 
 
 
 0-853 1 1 o-o 
 
 
 
 
 
 189 
 
 
 
 0-8 1 1 
 
 223-2 
 
 
 
 
 
 256 
 
 Apr. 20 
 
 
 
 
 
 
 (1087) 
 
 
 320 
 
 0-483 
 
 32-8 
 
 202'5 
 
 + 19-8 
 
 4 
 
 23 
 
 
 
 
 
 
 
 
 
 
 320 
 
 o - 56g 
 
 37-9 
 
 196-4 
 
 + 22-7 
 
 5 
 
 27 
 
 
 110-898 
 
 0-777 i38-5 
 
 
 
 
 
 198 
 
 
 320 
 
 0-604 
 
 43-0 
 
 192-2 
 
 + 22-4 
 
 46 
 
 196 
 
 
 
 
 0-917 61-2 
 
 
 
 
 
 23 4 
 
 
 320 
 
 0-626 
 
 48-1 
 
 188-8 
 
 + 21'0 
 
 3i 
 
 148 
 
 
 Apr. 21 
 
 
 
 
 
 
 
 ( 4 32) 
 
 
 320 
 
 0-637 
 
 5o - 2 
 
 187-3 
 
 + 20-4 
 
 3 
 
 4 5 
 
 
 
 
 
 
 
 
 
 
 
 320 
 
 0-660 
 
 53-5 
 
 184-5 
 
 + I 9 -6 
 
 10 
 
 97 
 
 
 i irogo 
 
 
 0-804 66-4 
 
 
 
 
 
 683 
 
 
 320 
 
 0-678 
 
 53-7 
 
 183-1 
 
 + 20-2 
 
 25 
 
 82 
 
 
 Apr. 22! 
 
 
 
 
 
 
 
 (683) 
 
 
 320 
 
 o-6g8 
 
 54-6 
 
 181-4 
 
 + 20-4 
 
 o 
 
 28 
 
 
 
 
 
 
 
 
 
 
 
 320 
 
 0-712 
 
 5/-3 
 
 179-3 
 
 4-I9-3 
 
 6 
 
 40 
 
 
 1 10-046 
 
 
 0-780 245-3 
 0-948 1 1 3-7 
 
 
 
 
 
 3o6 
 1 58 
 
 Apr. 28* 
 
 320 
 
 0-730 
 
 5g'2 
 
 177-0 
 
 + 18-8 
 
 68 
 (198) 
 
 272 
 (958) 
 
 I7'/ 
 (1994) 
 
 Apr. 20 
 
 
 
 
 
 
 (464) 
 
 
 
 
 
 
 
 
 
 
 114784 
 
 020 
 
 0-940 63-8 
 
 ig2-o 
 
 4-22-8 
 
 3 4 
 
 175 
 
 
 118-937 
 
 
 0-960 
 
 242-8 
 
 
 
 
 
 205 
 
 
 320 
 
 0-965 
 
 68-2 
 
 186-6 
 
 + ig-6 
 
 20 
 
 1 06 
 
 17420 
 
 
 
 O'8q5 
 
 228-0 
 
 
 
 
 
 227 
 
 
 320 
 
 0-980 
 
 67-8 
 
 182-7 
 
 + 20-7 
 
 46 
 
 370 
 
 
 
 
 0-864 
 
 248-2 
 
 
 
 
 
 75 
 
 
 02O 
 
 0-987 
 
 69-8 
 
 180-0 
 
 + 19-1 
 
 
 
 74 
 
 
 
 32O 
 
 0-394 
 
 4'4 
 
 201-8 
 
 + 19-2 
 
 o 
 
 5 
 
 
 
 320 
 
 o-ggS 
 
 70-0 
 
 176-4 
 
 4-19-3 
 
 
 
 I 7 5 
 
 
 
 322 
 
 0-437 
 
 9'9 
 
 igg-o 
 
 + 21-3 
 
 o 
 
 3 
 
 
 Apr. 25* 
 
 
 
 
 
 
 (100) 
 
 (900) 
 
 (742) 
 
 
 320 
 
 0-487 
 
 22-9 
 
 191-8 
 
 + 22-6 
 
 29 
 
 76 
 
 
 
 
 
 
 
 
 
 
 
 
 320 
 
 0-489 
 
 30'2 
 
 188-4 
 
 + 2I'0 
 
 17 
 
 42 
 
 
 
 
 
 
 
 
 
 
 
 
 320 
 
 o"5 1 1 
 
 29-4 
 
 187-9 
 
 + 22-4 
 
 
 
 16 
 
 
 110-806 
 
 320 
 
 0-853 
 
 58'5 j 192-5 
 
 + 23-7 
 
 4i 
 
 213 
 
 
 
 32O 
 
 o-499 
 
 32-2 
 
 187-1 
 
 + 20-9 
 
 9 
 
 22 
 
 
 
 320 
 
 0-878 
 
 62-2 
 
 188-4 
 
 4-21-7 
 
 24 
 
 70 
 
 
 
 320 
 
 o'5og 
 
 38-8 
 
 i83-g 
 
 + '9'4 
 
 o 
 
 20 
 
 
 
 320 
 
 o-8g3 
 
 62-6 
 
 i85-g 
 
 + 20'5 
 
 4 
 
 116 
 
 
 
 320 
 
 0-026 
 
 3g-3 
 
 182-9 
 
 + 20-1 
 
 18 
 
 64 
 
 
 
 320 
 
 0-908 
 
 63> 
 
 183-6 
 
 4-20-3 
 
 24 
 
 80 
 
 i8o5 c 
 
 
 320 
 
 0*545 
 
 4''9 
 
 180-9 
 
 4-20-1 
 
 o 
 
 4 
 
 
 
 320 
 
 0-900 
 
 65-6 
 
 184-9 
 
 + ig'z 
 
 9 
 
 52 
 
 
 
 320 
 
 o'553 
 
 44-2 
 
 179-5 
 
 + 19-5 
 
 
 
 20 
 
 
 
 320 
 
 0-902 
 
 66-5 
 
 175-7 
 
 4-19-2 
 
 72 
 
 210 
 
 
 
 320 
 
 0-564 
 
 46-9 
 
 177-9 
 
 -f'8-g. 
 
 12 
 
 -5 
 
 
 Apr. 26* 
 
 
 
 
 
 
 (174) 
 
 (740 
 
 (i8o5) 
 
 
 320 
 
 0-585 
 
 48-7 
 
 176-0 
 
 + 19-0 
 
 16 
 
 73 
 
 
 
 
 
 
 
 
 
 
 
 Apr. 29 
 
 
 
 
 
 
 (101) 
 
 (420) 
 
 (5o?) 
 
 1 17-055 
 
 
 o-qig 
 
 2g3-3 
 
 
 
 
 
 1 5 4 
 
 
 
 
 
 
 
 
 
 
 
 o-83g 
 
 302-3 
 
 
 
 
 
 i3 7 
 
 
 
 
 
 
 
 
 
 
 
 0-824 
 
 23g-5 i 
 
 
 
 
 2O5 
 
 iiS'gSi 
 
 0-971 
 
 243-0 
 
 
 
 
 
 236 
 
 
 
 0751 
 
 218-3 
 
 
 
 
 
 173 
 
 
 0-890 
 
 228-5 
 
 
 
 
 
 1 80 
 
 
 320 
 
 0-629 
 
 48-1 
 
 igS-5 
 
 + 21-1 
 
 
 
 52 
 
 2633 / 
 
 
 0-876 
 
 248-0 
 
 
 
 
 
 8 4 
 
 
 020 
 
 0-704 
 
 02'2 
 
 I9I7 
 
 + 22-1 
 
 40 
 
 170 
 
 
 
 320 0'436 
 
 9'4 
 
 199-0 
 
 4-21-3 
 
 O 
 
 5 
 
 
 
 320 
 
 0-727 
 
 56- 2 
 
 188-5 
 
 + 20-5 
 
 23 
 
 112 
 
 
 
 320 0-482 
 
 22'6 
 
 191-9 
 
 + 22-3 
 
 22 
 
 9' 
 
 
 
 32O 
 
 0-740 ; 58-2 
 
 186-7 
 
 + 19-7 
 
 3 
 
 14 
 
 
 
 32O 
 
 0-486 
 
 3o-2 
 
 188-3 
 
 4-20-8 
 
 10 
 
 4 3 
 
 
 
 320 
 
 0-754 
 
 5g-5 
 
 i85-2 
 
 + '9'4 
 
 2 
 
 68 
 
 
 
 320 
 
 O'5og 
 
 29-4 
 
 187-8 
 
 4-22-3 
 
 
 
 18 
 
 
 
 320 
 
 0-777 
 
 60-2 
 
 182-9 
 
 + 197 
 
 20 
 
 142 
 
 
 
 320 
 
 0-494 
 
 32-1 
 
 187-2 
 
 + 207 
 
 5 
 
 12 
 
 
 
 320 
 
 0-827 
 
 64-3 
 
 176-9 
 
 + I8-3 
 
 66 
 
 253 
 
 
 
 320 
 
 O'5o6 
 
 3g-8 
 
 183-5 
 
 + 18-9 
 
 i 
 
 i3 
 
 
 Apr. 2- 
 
 
 
 
 
 
 (i5 4 ) 
 
 (811) 
 
 (33o2) 
 
 
 320 
 
 0-524 
 
 3g-5 
 
 182-7 
 
 + 19-9 
 
 19 
 
 48 
 
 
 * Indian photo. The Areas of Spots and Faculac are expressed in Millionths of the Sun'u visible Hemisphere. t Melbourne photo. 
 
22 
 
 SEDUCTION OF SOLAR PHOTOGRAPHS THROUGHOUT 1878-1881. 
 
 MEASURES of POSITIONS and AREAS of SPOTS and FACULX upon the SUN'S DISK on PHOTOGRAPHS taken in the YEAR 1880 continued. 
 
 
 
 Dis- 
 
 tance 
 
 
 HKI.IOGRAPHIC 
 
 SPOTS. 
 
 FACI i..],. 
 
 
 
 Dis- 
 
 
 HELIOOEAPJIIC 
 
 SPOTS. 
 
 KAI i 
 
 Mean 
 Solar 
 Time. 
 
 No. of 
 Group, 
 aud 
 Letter 
 for 
 Spot. 
 
 from 
 Centre 
 in 
 terms 
 ol 
 Sun's 
 Radius. 
 
 Position 
 
 An<rle 
 from 
 Sun's 
 Axis. 
 
 
 
 
 Mean 
 Solar 
 Time. 
 
 No. of 
 Group, 
 and 
 Letter 
 for 
 Spot. 
 
 tance 
 from 
 Centre 
 in 
 terms 
 of 
 Sun's 
 Radius 
 
 Position 
 Angle 
 from 
 Sun's 
 Axis. 
 
 
 
 
 Lonffi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 OMBRA 
 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 WHOLE 
 
 tiir railh 
 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBRA 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 WHOLE 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 < .roup 
 4 for 
 Day). 
 
 1880. 
 
 
 
 
 
 o 
 
 o 
 
 
 
 
 1880. 
 
 
 
 o 
 
 o 
 
 
 
 
 
 
 u8 d '95l 
 
 32O 
 
 0-040 
 
 42-2 
 
 180-9 
 
 + '97 
 
 
 
 4 
 
 
 I21 d 7g3 
 
 320 
 
 0-683 
 
 302-8 
 
 203'0 
 
 + 18-7 
 
 4 
 
 1 1 
 
 
 
 32O 
 
 o'55o 
 
 44'2 
 
 179-5 
 
 + '9'4 
 
 o 
 
 16 
 
 
 
 320 
 
 0-627 
 
 3 1 5-5 
 
 194-2 
 
 4-23-1 
 
 o 
 
 18 
 
 
 
 320 
 
 o'56o 
 
 46-8 
 
 178-0 
 
 + 18-7 
 
 16 
 
 79 
 
 
 
 320 
 
 0-608 
 
 3i8-i 
 
 192-0 
 
 + 23-4 
 
 26 
 
 IO2 
 
 
 
 320 
 
 0-584 
 
 48-7 
 
 176-9 
 
 + 19-0 
 
 17 
 
 67 
 
 
 
 32O 
 
 0-664 
 
 321-4 
 
 188-1 
 
 4-22-5 
 
 o 
 
 12 
 
 
 Apr. 29 
 
 
 
 
 
 
 (89) 
 
 (3g6) 
 
 (5oo) 
 
 
 320 
 
 0-496 
 
 325-1 
 
 183-3 
 
 4-20-3 
 
 5 
 
 '4 
 
 
 
 
 
 
 
 
 
 
 
 
 320 
 
 0-461 
 
 327-8 
 
 1 80- 8 
 
 4-19-2 
 
 9 
 
 23 
 
 
 
 
 
 
 
 
 
 . 
 
 
 
 320 
 
 0-460 
 
 332-8 
 
 178-4 
 
 + 19-8 
 
 i 
 
 8 
 
 
 i ig'gSi 
 
 
 '947 
 
 230'2 
 
 
 
 
 
 223 
 
 
 32O 
 
 0-416 
 
 336-0 
 
 176-0 
 
 + 18-6 
 
 13 
 
 24 
 
 
 
 
 0-887 299-8 
 
 
 
 
 
 227 
 
 
 321 
 
 0-978 
 
 6r6 
 
 gr6 +267 
 
 82 
 
 525 
 
 
 
 32o 
 
 o'453 
 
 33o-2 
 
 2o3'5 
 
 4-19-2 
 
 4 
 
 6 
 
 
 
 321 
 
 0-976 
 
 65-6 
 
 91-6 
 
 4-22-7 
 
 
 
 24 
 
 460 nf 
 
 
 32O 
 
 0-462 
 
 355-6 
 
 192-0 
 
 + 22-7 
 
 9 
 
 65 
 
 
 May 2* 
 
 
 
 
 
 
 (140) 
 
 (76.) 
 
 (460) 
 
 
 320 
 
 0-433 
 
 358-8 
 
 190-4 
 
 + 2l-q 
 
 2 
 
 20 
 
 
 
 
 
 
 
 
 
 
 
 
 32O 
 
 0-429 
 
 3-8 
 
 188-1 
 
 + 21-2 
 
 22 
 
 73 
 
 
 
 
 
 
 
 
 
 
 
 
 32O 
 
 0-394 
 
 12-4 
 
 184-6 
 
 + l 8-6 
 
 O 
 
 10 
 
 
 1 23-oo3 
 
 320 
 
 0-821 
 
 297-6 
 
 200-4 
 
 4-ig-g 
 
 o 
 
 8 
 
 ig23 c 
 
 
 320 
 
 0-424 
 
 1 5'2 
 
 i83'i 
 
 4-20-1 
 
 7 
 
 33 
 
 
 
 320 
 
 0-746 
 
 3o6-6 
 
 190-5 
 
 4-23-6 
 
 27 
 
 132 
 
 
 
 320 
 
 0-434 
 
 24-6 
 
 178-9 
 
 + Ig-2 
 
 18 
 
 go 
 
 
 
 320 
 
 0-634 
 
 3o7-q 
 
 181-8 
 
 + 197 
 
 
 
 33 
 
 
 
 320 
 
 0-449 
 
 3o-6 
 
 176-9 
 
 + 18-8 
 
 24 
 
 73 
 
 
 
 3zi 
 
 0-889 
 
 62-3 
 
 91-6 
 
 4-22-4 
 
 o 
 
 29 
 
 '477/ 
 
 Apr. 3o 
 
 
 
 
 
 
 (86) 
 
 (3 7 o) 
 
 (460) 
 
 
 321 
 
 0-908 
 
 58-5 
 
 90-2 
 
 4-26-5 
 
 123 
 
 432 
 
 
 
 
 
 
 
 
 
 
 
 May 3 
 
 
 
 
 
 
 (I5o) 
 
 (63 4 ) 
 
 (3400) 
 
 120-003 
 
 
 '947 
 
 229-7 
 
 
 
 
 
 I 4 5 
 
 
 
 
 
 
 
 
 
 
 
 
 0-901 
 
 2 997 
 
 
 
 
 
 153 
 
 123-724 
 
 320 
 
 0-888 
 
 294-1 
 
 '99'4 
 
 + '9'4 
 
 2 
 
 18 
 
 
 
 320 
 
 0-4.53 
 
 32g-6 
 
 203-5 
 
 4-ig-o 
 
 o 
 
 7 
 
 
 
 320 
 
 0-838 
 
 3or5 
 
 191-4 
 
 + 23-7 
 
 8 
 
 40 
 
 8l6,v;; 
 
 
 320 
 
 0-45 1 
 
 355-4 
 
 '917 
 
 4-22-6 
 
 27 
 
 77 
 
 
 
 32O 
 
 73g 
 
 3oo-8 
 
 182-6 
 
 4-19-6 
 
 12 
 
 46 
 
 
 
 O2O 
 
 0-438 
 
 358'4 
 
 190-3 
 
 4-2rg 
 
 
 
 7 
 
 
 
 320 
 
 0-712 
 
 3o.3-7 
 
 '79'3 
 
 420-4 
 
 O 
 
 '9 
 
 
 
 32O 
 
 0-427 
 
 3-5 
 
 187-9 
 
 + 21-1 
 
 23 
 
 57 
 
 I 
 
 
 321 
 
 0-804 
 
 58- 7 
 
 92*6 
 
 + 22'2 
 
 o 
 
 12 
 
 
 
 320 
 
 o-3g2 
 
 "7 
 
 184-7 
 
 4-iS'o 
 
 o 
 
 o 
 
 
 
 321 
 
 0-826 
 
 67-1 
 
 gro 
 
 + 24-2 
 
 II 
 
 4 2 
 
 
 
 320 
 
 0-421 
 
 14-6 
 
 I83-I 
 
 4-20-0 
 
 12 
 
 29 
 
 
 
 321 
 
 0-836 
 
 55-4 
 
 go-6 
 
 4-25-g 
 
 64 
 
 368 
 
 687 nf 
 
 
 320 
 
 0' 4 2 9 
 
 24'3 
 
 178-8 
 
 + 19-0 
 
 '7 
 
 78 
 
 
 May 4* 
 
 
 
 
 
 
 (87) 
 
 (545) 
 
 (1403) 
 
 
 320 
 
 0-444 
 
 30'2 
 
 176-9 
 
 4-18-6 
 
 22 
 
 77 
 
 
 
 
 
 
 
 
 
 
 
 Apr. 3o 
 
 
 
 
 
 
 (101) 
 
 (337) 
 
 (298) 
 
 124-810 
 
 320 
 
 o-g36 
 
 296-9 
 
 igi-3 
 
 4-23-6 
 
 3 
 
 32 
 
 1 9 1 1 c 
 
 
 
 
 
 
 
 
 
 
 
 320 
 
 0-876 
 
 294-1 
 
 183-3 
 
 4-19-0 
 
 2 
 
 20 
 
 
 I2o-go8 
 
 
 0-941 
 
 296-7 
 
 
 
 
 
 192 
 
 
 32ia 
 
 0-706 
 
 290-0 
 
 i68-3 
 
 iHi'+ 
 
 
 
 '4 
 
 
 
 32O 
 
 0-049 
 
 3 1 5-0 
 
 201-7 
 
 4-19-2 
 
 7 
 
 42 
 
 
 
 321 
 
 o-6gg 
 
 5o'o 
 
 go" 2 
 
 4-23-8 
 
 8 
 
 68 
 
 
 
 320 
 
 0-624 
 
 33r6 
 
 ig3-3 
 
 + 23-6 
 
 
 
 i3 
 
 
 
 321 
 
 0-715 
 
 47-8- 
 
 go'c 
 
 4-25-8 
 
 58 
 
 336 
 
 
 
 320 
 
 O'5o2 
 
 333-6 
 
 igi'5 
 
 4-22-8 
 
 16 
 
 5 4 
 
 
 
 321 
 
 0-732 
 
 5o-5 
 
 87-6 
 
 4-24-9 
 
 ii 
 
 6 
 
 679 / 
 
 
 320 
 
 0-463 
 
 338-7 
 
 187-9 
 
 4-21-6 
 
 7 
 
 5o 
 
 
 May 5* 
 
 
 
 
 
 
 (72) 
 
 (476) 
 
 (2690) . 
 
 
 320 
 
 0-420 
 
 348-1 
 
 182-8 
 
 4-20-3 
 
 12 
 
 26 
 
 
 
 
 
 
 
 
 
 
 
 
 320 
 
 o-3g8 
 
 356-O 
 
 179-2 
 
 fig-4. 
 
 IS 
 
 47 
 
 
 126-060 
 
 321 
 
 0-628 
 
 3 4 - 7 
 
 90-7 
 
 4-22-5 
 
 4 
 
 9 
 
 646 nj 
 
 
 320 
 
 o-36g 
 
 3-9 
 
 176-0 
 
 4-17-6 
 
 O 
 
 9 
 
 
 
 321 
 
 0-677 
 
 32-g 
 
 8g-3 
 
 +26-7 
 
 76 
 
 420 
 
 
 
 32O 
 
 0-386 
 
 4-3 
 
 176-8 
 
 4-18-6 
 
 '4 
 
 44 
 
 
 May 6 
 
 
 
 
 
 
 (79) 
 
 (429) 
 
 (646) 
 
 
 
 0-792 
 
 46-7 
 
 
 
 
 
 118 
 
 
 
 
 
 
 
 
 
 
 
 
 0-928 
 
 67-8 
 
 
 
 
 
 IOI 
 
 126-909 
 
 
 '949 
 
 296-5 
 
 
 
 
 
 47' 
 
 May i 
 
 
 
 
 
 
 (74) 
 
 (286) 
 
 (4i) 
 
 
 321 
 
 o-5o5 
 
 16-7 
 
 88-9 
 
 4-25-6 
 
 7i 
 
 353 
 
 
 
 
 
 
 
 
 
 
 
 
 322 
 
 0-488 
 
 149-6 
 
 82-0 
 
 -27-9 
 
 o 
 
 9 
 
 
 I2O-q5l 
 
 
 0-960 
 
 296-6 
 
 
 
 
 
 171 
 
 
 322 
 
 0-620 
 
 146-6 
 
 78-7 
 
 28-4 
 
 2 
 
 10 
 
 
 
 320 
 
 0-664 
 
 314-2 201-7 
 
 4-19-1 
 
 9 
 
 3 1 
 
 
 May 7 
 
 
 
 
 
 
 (73) 
 
 (3 7 2) 
 
 (470 
 
 
 32O 
 
 0-628 
 
 33o'7 
 
 ig3-3 
 
 4-23-6 
 
 
 
 8 
 
 
 
 
 
 
 
 
 
 
 
 
 320 
 
 o - 5o6 
 
 332-7 
 
 191-5 
 
 4-22-8 
 
 >9 
 
 66 
 
 
 126-921 
 
 
 0-901 
 
 297-2 
 
 
 
 
 
 447 
 
 
 320 
 
 0-463 
 
 336-8 188-2 
 
 421-3 
 
 ii 
 
 33 
 
 
 
 
 0-922 
 
 283-3 
 
 
 
 
 
 87 
 
 
 320 
 
 0-419 
 
 346-8 182-8 
 
 4-20-1 8 
 
 25 
 
 
 
 321 
 
 0-607 
 
 16-4 
 
 8g-o 
 
 4-25-g 
 
 65 
 
 347 
 
 
 
 32O 
 
 o-3g7 
 
 364-0 1 79-6 
 
 4-I9-3 
 
 18 
 
 4" 
 
 
 
 322 
 
 0-482 
 
 149-5 
 
 82-1 
 
 -27-6 
 
 3 
 
 II 
 
 
 
 320 
 
 0-368 
 
 2-3 176-1 
 
 4-17-6 
 
 o 
 
 5 
 
 
 
 322 
 
 0-5 1 8 
 
 146-7 
 
 78-8 
 
 28-3 
 
 2 
 
 IO 
 
 
 
 32O 
 
 o-383 
 
 2-8 176-9 
 
 4-18-5 
 
 23 
 
 38 
 
 
 May 7 
 
 
 
 
 
 
 (70) 
 
 (368) 
 
 (5*4) 
 
 
 
 o-8g6 
 
 40-8 
 
 
 
 
 68 
 
 
 
 
 
 
 
 
 
 
 
 
 o-g25 
 
 66-3 
 
 
 
 
 ii3 
 
 127-936 
 
 
 o-g32 
 
 299-8 
 
 
 
 
 
 210 
 
 
 
 o-g5o 
 
 1 1 o-3 
 
 
 
 
 125 
 
 
 321 
 
 0-487 
 
 362-4 
 
 887 
 
 + 26-6 
 
 86 
 
 49' 
 
 
 May i 
 
 
 
 
 
 
 (88) 
 
 (247) 
 
 (477) 
 
 May 8 
 
 
 
 
 
 
 (86) 
 
 (490 
 
 (210) 
 
 
 
 
 
 
 
 
 
 1 
 
 
 
 
 
 
 
 
 
 * Indian photo. The Areas of Spots and Faculae are expressed in Millionths of the Sun's risible Hemisphere. 
 
REDUCTION OF SOLAU PHOTOGRAPHS THROUGHOUT 1878-1881. 
 
 MK\MKKS of POSITIONS and ARKAS of SPOTS niul R\ci:i..r upon the Srx's DISK on PnoronuAi'iis taken in (lie YKAI; 1*80 c<intinttc<l. 
 
 
 Dis- 
 
 
 IlKl.IOCKAIMIIC 
 
 SPOTS. 
 
 V.WI.JE. 
 
 
 
 Dis- 
 
 
 III Um.i: M'lllr 
 
 SPOTS. 
 
 KACDL.U. 
 
 Mean 
 
 Sol 
 
 Group, 
 
 Letter 
 
 for 
 
 Spot. 
 
 tance 
 from 
 
 in 
 terms 
 
 of 
 Bun's 
 
 Radius. 
 
 Position 
 Angle 
 
 from 
 Sun's 
 Axis. 
 
 
 
 
 (lean 
 
 Solar 
 Time. 
 
 No. of 
 Group. 
 and 
 
 Letter 
 for 
 
 Spot. 
 
 tance 
 
 from 
 Centre 
 in 
 terms 
 
 of 
 
 Sun's 
 Radius. 
 
 Position 
 
 Aiiiile 
 from 
 Sun's 
 
 Axis. 
 
 
 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBRA 
 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 
 Vlllll.K 
 for eaeli 
 
 Spelt 
 
 (and for 
 Day). 
 
 Area for 
 MUSb 
 
 Group 
 (and f 01- 
 Day). 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 I MliliA 
 
 Spot 
 
 ( ;ind for 
 !>:.} ). 
 
 Area of 
 
 win ILK 
 
 Spin 
 (and for 
 Day). 
 
 Area I'or 
 each 
 up 
 (and for 
 Day). 
 
 1880. 
 
 
 
 
 
 o 
 
 o 
 
 
 
 
 1880. 
 
 
 
 
 
 o 
 
 o . 
 
 
 
 
 I28''-000 
 
 321 
 
 0-489 
 
 35o-8 
 
 88-7 
 
 + 25-6 
 
 74 
 
 473 
 
 
 i34 d -g37 
 
 
 '977 
 
 288-7 
 
 
 
 
 
 104 
 
 May 8 
 
 
 
 
 
 
 (74) 
 
 (473) 
 
 
 
 
 0-9 1 3 
 
 2g6'3 
 
 
 
 
 
 268 
 
 
 
 
 
 
 
 
 
 
 
 
 o-g5g 
 
 n8-5 
 
 
 
 
 
 2l5 
 
 128717 
 
 321 
 
 0-534 
 
 336-1 
 
 88-2 
 
 + 26-1 
 
 Q2 
 
 422 
 
 
 May 1 5 
 
 
 
 
 
 
 
 
 (58 7 ) 
 
 May g* 
 
 
 
 
 
 
 (92) 
 
 (422) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 135-782 
 
 
 
 0-970 
 
 2 94 -3 
 
 
 
 
 
 149 
 
 129-686 
 
 321 
 
 o-63o 
 
 32TO 
 
 87-6 +26-5 
 
 116 
 
 543 
 
 
 
 
 0-909 
 
 120-6 
 
 
 
 
 
 122 
 
 
 323 
 
 0-366 
 
 343-2 
 
 70-6 4-17-4 
 
 O 
 
 26 
 
 
 May 1 6* 
 
 
 
 
 
 
 
 
 (VO 
 
 
 323 
 
 o-36 1 
 
 35o'7 
 
 64-9 
 
 + 17-8 
 
 2 
 
 40 
 
 
 
 
 
 
 
 
 
 
 
 May 10* 
 
 
 
 
 
 
 (118) 
 
 (609) 
 
 
 l36-g6g 
 
 
 0-814 
 
 126-2 
 
 
 
 
 
 210 
 
 
 
 
 
 
 
 
 
 
 
 0-867 
 
 102-5 
 
 
 
 
 
 73 
 
 130-946 
 
 321 
 
 o- 7 83 
 
 3o 7 -6 
 
 88-5 
 
 + 26-4 
 
 82 
 
 4i5 
 
 256 c 
 
 May 17 
 
 
 
 
 
 
 
 
 (283) 
 
 
 323 
 
 0-538 
 
 309-4 
 
 70-6 
 
 + I7-3 
 
 4 
 
 10 
 
 
 
 
 
 
 
 
 
 
 
 May ll 
 
 
 
 
 
 
 (86) 
 
 (4*5) 
 
 (256) 
 
 1 36-986 
 
 
 0-8 1 6 
 
 125-7 
 
 
 
 
 
 85 
 
 
 
 
 
 
 
 
 
 
 
 
 o-855 
 
 102-0 
 
 
 
 
 
 194 
 
 i3ro53 
 
 321 
 
 0-789 
 
 3o7'3 
 
 87-6 
 
 4-26-5 
 
 87 
 
 43o 
 
 4l3 c 
 
 May 17 
 
 
 
 
 
 
 
 
 (279) 
 
 
 323 
 
 o-55o 
 
 3o8-2 
 
 70-2 
 
 4-i7'3 
 
 5 
 
 10 
 
 
 
 
 
 
 
 
 
 
 
 May II 
 
 
 
 
 
 
 (92) 
 
 (440) 
 
 (43) 
 
 i38-6gi 
 
 
 0-936 
 
 63-5 
 
 
 
 
 
 253 
 
 
 
 
 
 
 
 
 
 
 May 19* 
 
 
 
 
 
 
 
 
 (253) 
 
 i3i-go5 
 
 
 0-879 
 
 246-2 
 
 
 
 
 
 241 
 
 
 
 
 
 
 
 
 
 
 
 
 0-646 
 
 3oi-5 
 
 
 
 
 
 56 
 
 i3g-g52 
 
 325 
 
 o-83g 
 
 5q-I 
 
 233-7 
 
 4-24-4 
 
 g 
 
 28 
 
 246 c 
 
 
 321 
 
 0-876 
 
 302'2 
 
 87-7 
 
 + 26-3 
 
 1 06 
 
 38o 
 
 6i5/ 
 
 
 32 5 
 
 o-865 
 
 6l-3 
 
 23o'I 
 
 -I-23-5 
 
 o 
 
 23 
 
 
 
 323 
 
 0-684 
 
 298-4 
 
 70-9 
 
 + 16-8 
 
 3 
 
 1 1 
 
 
 
 
 o-83g 
 
 I43-0 
 
 
 
 
 
 267 
 
 May 12 
 
 
 
 
 
 
 (i9) 
 
 (3 9 i) 
 
 (9,2) 
 
 
 
 0-885 
 
 i8r3 
 
 
 
 
 
 "9 
 
 
 
 
 
 
 
 
 
 
 May 20 
 
 
 
 
 
 
 (9) 
 
 (5i) 
 
 (632) 
 
 iSi-gg; 
 
 321 
 
 0-884 
 
 302'I 
 
 87-5 
 
 + 26-5 
 
 96 
 
 385 
 
 532 nj 
 
 
 
 
 
 
 
 
 
 
 
 323 
 
 0-699 
 
 298-0 
 
 71-0 
 
 + 7' 
 
 3 
 
 7 
 
 
 140-012 
 
 325 
 
 o-83o 
 
 58-6 
 
 234-0 
 
 4-24-4 
 
 10 
 
 38 
 
 167 c 
 
 May 12 
 
 
 
 
 
 
 (99) 
 
 (392) 
 
 (532) 
 
 
 325 
 
 o-85i 
 
 61-1 
 
 23i-o 
 
 4-23-2 
 
 4 
 
 5o 
 
 
 
 
 
 
 
 
 
 
 
 
 
 o-85i 
 
 140-3 
 
 
 
 
 
 25 7 
 
 l32-go5 
 
 
 o-g3o 
 
 246-0 
 
 
 
 
 
 1 34 
 
 
 
 o"qo6 
 
 176-0 
 
 
 
 
 
 65 
 
 
 
 0-785 
 
 290-0 
 
 
 
 
 
 121 
 
 May 20 
 
 
 
 
 
 
 (19) 
 
 (88) 
 
 (489) 
 
 
 32J 
 
 o-g55 
 
 298-3 
 
 88-0 
 
 4-25-9 
 
 137 
 
 477 
 
 7H/ 
 
 
 
 
 
 
 
 
 
 
 
 32 4 
 
 0-698 
 
 307-0 
 
 55'9 
 
 + 227 
 
 5 
 
 21 
 
 60 s p 
 
 141-012 
 
 325 
 
 0-707 
 
 5i- 7 
 
 234-2 
 
 4-24-6 
 
 8 
 
 22 
 
 171 c 
 
 
 32 4 
 
 0-669 
 
 3 1 0-4 
 
 52-5 
 
 + 23-4 
 
 7 
 
 21 
 
 76 nf 
 
 
 325 
 
 0-727 
 
 55-7 
 
 23l'2 
 
 4-22-g 
 
 2 
 
 '4 
 
 
 May 1 3 
 
 
 
 
 
 
 (-49) 
 
 (5ig) 
 
 (uo5) 
 
 May 21 
 
 
 
 
 
 
 (10) 
 
 (36) 
 
 (170 
 
 102-934 
 
 
 0-923 
 
 244-2 
 
 
 
 
 
 147 
 
 
 
 
 
 
 
 
 
 
 
 
 o- 79 3 
 
 294-5 
 
 
 
 
 
 84 
 
 I4i-o58 
 
 325 
 
 0-703 
 
 5o-6 
 
 23^4 
 
 4-20-1 
 
 5 
 
 i3 
 
 IOOC 
 
 
 321 
 
 0-964 
 
 298-2 
 
 87-0 
 
 4-25-g 
 
 101 
 
 3gg 
 
 8o5 nf 
 
 
 3z5 
 
 0-724 
 
 55-3 
 
 23ro 
 
 4-23-0 
 
 o 
 
 7 
 
 
 
 32 4 
 
 0-700 
 
 3o6-6 
 
 56-o 
 
 4-22-6 
 
 2 
 
 i5 
 
 "(1 Si p 
 
 May 21 
 
 
 
 
 
 
 (5) 
 
 (20) 
 
 (i5o) 
 
 
 024 
 
 0-670 
 
 3l0'2 
 
 62-4 
 
 4-23-4 
 
 3 
 
 17 
 
 1 08 n f 
 
 
 
 
 
 
 
 
 
 
 May 13 
 
 
 
 
 
 
 (106) 
 
 (430 
 
 (1195)' 
 
 141-760 
 
 
 o - g6i 
 
 67-6 
 
 
 
 
 
 43, 
 
 
 
 
 
 
 
 
 
 
 May 22* 
 
 
 
 
 
 
 
 
 ( 4 3i) 
 
 133-922 
 
 
 0-886 
 
 291-0 
 
 
 
 
 ,46 
 
 
 
 
 
 
 
 
 
 
 
 321 
 
 0-998 
 
 206-0 89-9 
 
 4-25-7 
 
 o 
 
 5 4 2 
 
 5oo nj 
 
 143-722 
 
 325 
 
 0-853 
 
 293-9 
 
 291-0 
 
 4-19-5 
 
 z 
 
 7 
 
 
 
 324 
 
 0-796 
 
 3o3-2 
 
 52M 
 
 +24-1 
 
 
 
 2! 
 
 284 r 
 
 
 320(7 
 
 0-844 
 
 294-0 
 
 290-5 
 
 4-IQ-3 
 
 2 
 
 7 
 
 107 c 
 
 May 14 
 
 
 
 
 
 
 (o) 
 
 (563) 
 
 (93o) 
 
 
 3230 
 
 0-841 
 
 2g5-8 
 
 289-7 
 
 4-20-7 
 
 2 
 
 5 
 
 
 
 
 
 
 
 
 
 
 
 
 326 
 
 0-982 
 
 757 
 
 1 57-7 
 
 4-13-8 
 
 21 
 
 74 
 
 2970 
 
 133-943 
 
 
 0-901 
 
 291-2 
 
 
 
 
 
 142 
 
 
 
 0-900 
 
 64-6 
 
 
 
 
 
 466 
 
 
 321 
 
 0-996 
 
 296-3 
 
 87-9 
 
 4-25-9 
 
 o 
 
 446 
 
 262 nf 
 
 May 24* 
 
 
 
 
 
 
 (27J 
 
 (93) 
 
 (870) 
 
 
 324 
 
 O79i 
 
 302-6 
 
 52-o 
 
 4- 24-2 
 
 o 
 
 H 
 
 3o2 c 
 
 
 
 
 
 
 
 
 
 
 May 14 
 
 
 
 
 
 
 (o) 
 
 (460) 
 
 (5o6) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 144-925 
 
 
 0-902 
 
 291-3 
 
 
 
 
 
 1 33 
 
 134-922 
 
 
 0-968 
 
 289-0 
 
 
 
 
 
 1 36 
 
 
 
 0-883 
 
 238-5 
 
 
 
 
 
 107 
 
 
 
 0-909 
 
 296-5 
 
 
 
 
 
 2OI 
 
 
 
 o-8--> 
 
 J o.Vo 
 
 
 
 
 
 61 
 
 
 
 0-965 
 
 ii8-3 
 
 
 
 
 
 198 
 
 
 326 
 
 0-867 
 
 70-2 
 
 161-7 
 
 4-12-3 
 
 1O 
 
 47 
 
 3zi e 
 
 May 1 5 
 
 
 
 
 
 
 
 
 (535) 
 
 
 326 
 
 0-876 
 
 74-2 
 
 160-2 
 
 4-13-3 
 
 4 
 
 1 1 
 
 
 * Indian photo. TL' uid Vacate are expressed in Millionths of the Sun's visible Hemisphere. 
 
24 
 
 REDUCTION OF SOLAR PHOTOGRAPHS THROUGHOUT 1878-1881. 
 
 MKASURKS of POSITIONS and AREAS of SPOTS and FACUI^E upon the SUN'S DISK on PHOTOGRAPHS taken in the YEAR 1880 continued. 
 
 
 No. of 
 
 Dis- 
 tance 
 
 Position 
 
 HELIOGEArillC 
 
 STOTS. 
 
 FACUL/E. 
 
 
 No. oi 
 
 Di-- 
 
 >t;incu 
 i> 
 
 
 HKLIOGKAPHIC 
 
 SPOTS. 
 
 FACUI.^E. 
 
 Mean 
 Solar 
 Time. 
 
 Group, 
 and 
 Letter 
 for 
 Spot. 
 
 Centre 
 in 
 terms 
 of 
 
 Sun's 
 Radius 
 
 Angle 
 from 
 Sun's 
 Axis. 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 .UMBRA 
 for each 
 
 Spot 
 (and for 
 Day). 
 
 Area of 
 WHOLE 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 Mean 
 Solar 
 Time. 
 
 Group 
 
 ;mil 
 Letter 
 for 
 Spot. 
 
 iron} 
 Centre 
 
 in 
 terms 
 of 
 Sun's 
 Radius 
 
 Position 
 Angle 
 from 
 Sun's 
 Axis. 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBRA 
 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 WHOLE 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 ! tor 
 Day). 
 
 1880. 
 
 
 
 o 
 
 o 
 
 o 
 
 
 
 
 1880. 
 
 
 
 o 
 
 o 
 
 o 
 
 
 
 
 H4 d- 9 2 5 
 
 026 
 
 0-904 
 
 74-0 
 
 156-6 
 
 + i3-g 
 
 77 
 
 286 
 
 
 I48 d -loo 
 
 326 
 
 0-424 
 
 55'7 
 
 1 56-8 
 
 + i3-o 
 
 36 
 
 184 
 
 
 
 0773 
 
 i53'3 
 
 
 
 
 
 60 
 
 
 326 
 
 0-463 
 
 54-0 
 
 i55-i 
 
 + i5-o 
 
 67 
 
 348 
 
 
 
 
 0-879 
 
 61-7 
 
 
 
 
 
 370 
 
 
 
 o-86g 
 
 og-3 
 
 
 
 
 
 35 7 
 
 May 25 
 
 
 
 
 
 
 (9') 
 
 (344) 
 
 (1052) 
 
 May 28 
 
 
 
 
 
 
 (184) 
 
 (829) 
 
 / 
 
 (477) 
 
 1 45-07 1 
 
 
 o-g85 
 
 290-8 
 
 
 
 
 
 324 
 
 148-914 
 
 
 o-g20 
 
 221-3 
 
 
 
 
 
 217 
 
 
 
 0-896 
 
 3oo-3 
 
 
 
 
 
 43 
 
 
 
 o'go 
 
 245-3 
 
 
 
 
 
 1 65 
 
 
 
 0-858 
 
 236-2 
 
 
 
 
 
 1 75 
 
 
 
 0-906 
 
 3oo-5 
 
 
 
 
 
 210 
 
 
 326 
 
 0-847 
 
 74-3 
 
 i6i-5 
 
 + 12-6 
 
 4 
 
 58 
 
 290 e 
 
 
 326 
 
 0-260 
 
 6-6 
 
 1 65-3 
 
 + 14-4 
 
 ig 
 
 5o 
 
 
 
 3z6 
 
 0-862 
 
 73-5 
 
 160-0 
 
 + I3-5 
 
 
 
 '7 
 
 
 
 326 
 
 0-254 
 
 16-7 
 
 162-8 
 
 + I3-3 
 
 44 
 
 168 
 
 
 
 326 
 
 0-892 
 
 73-5 
 
 156-3 
 
 + 14-1 
 
 59 
 
 220 
 
 
 
 326 
 
 O-202 
 
 25-0 
 
 i6o-g 
 
 -r-12'4 
 
 o 
 
 35 
 
 
 
 
 0-764 
 
 149-8 
 
 
 
 
 
 122 
 
 
 326 
 
 0-237 
 
 33-2 
 
 i5g-6 
 
 + 10-7 
 
 8 
 
 23 
 
 
 
 
 0-809 
 
 597 
 
 
 
 
 
 52O 
 
 
 326 
 
 o-3 1 5 
 
 35-o 
 
 i56'4 
 
 + 14-2 
 
 69 
 
 5g2 
 
 
 May 25 
 
 
 
 
 
 
 (63) 
 
 (295) 
 
 (1474) 
 
 
 326 
 
 o'35i 
 
 40-7 
 
 1 53-3 
 
 + 14-8 
 
 i3 
 
 67 
 
 
 
 
 
 
 
 
 
 
 
 
 
 0-774 
 
 54-8 
 
 
 
 
 
 21 1 
 
 145-916 
 
 
 0-91 1 
 
 238-2 
 
 
 
 
 
 247 
 
 May 29 
 
 
 
 
 
 
 ('53) 
 
 ( 9 35) 
 
 (8o3) 
 
 
 326 
 
 0-724 
 
 71-7 
 
 162-2 
 
 + 12-4 
 
 53 
 
 I 7 8 
 
 409 c 
 
 
 
 
 
 
 
 
 
 
 
 326 
 
 0-764 
 
 72-3 
 
 i58'7 
 
 + 127 
 
 6 
 
 44 
 
 
 148-940 
 
 
 0-918 
 
 298-3 
 
 
 
 
 
 223 
 
 
 326 
 
 o-8o3 
 
 717 
 
 i55-2 
 
 + i3-g 
 
 9 3 
 
 379 
 
 
 
 
 0-918 
 
 245-2 
 
 
 
 
 
 101 
 
 
 
 0797 
 
 58-o 
 
 
 
 
 
 3oi 
 
 
 
 0-914 
 
 220-7 
 
 
 
 
 
 1 60 
 
 May 26 
 
 
 
 
 
 
 (i5a) 
 
 (60 1) 
 
 (957) 
 
 
 326 
 
 0-262 
 
 4'9 
 
 (65-5 
 
 + 14-4 
 
 >9 
 
 69 
 
 
 
 
 
 
 
 
 
 
 
 
 326 
 
 0-201 
 
 1 5-3 
 
 i62-g 
 
 + 13-3 
 
 25 
 
 '74 
 
 
 145-991 
 
 
 0-91 1 
 
 237-2 
 
 
 
 
 
 1 60 
 
 
 3 2 6 
 
 o-25g 
 
 26-0 
 
 1 60-0 
 
 + 12-7 
 
 i 
 
 36 
 
 
 
 326 
 
 0-712 
 
 71-1 
 
 162-3 
 
 + 12-6 
 
 4 8 
 
 i5 4 
 
 208 c 
 
 
 326 
 
 0-233 
 
 32-7 
 
 i5g-5 
 
 + 10-6 
 
 i3 
 
 32 
 
 
 
 326 
 
 0-748 
 
 72-1 
 
 iSg-i 
 
 + 12-5 
 
 8 
 
 4 8 
 
 
 
 326 
 
 o-3 1 3 
 
 34-6 
 
 156-3 
 
 + 14-2 
 
 93 
 
 547 
 
 
 
 326 
 
 o- 79 3 
 
 71-1 
 
 155-3 
 
 + 14-1 
 
 107 
 
 3 4 8 
 
 
 
 326 
 
 0-346 
 
 3 9 -6 
 
 1 53-7 
 
 + 14-7 
 
 16 
 
 80 
 
 
 
 
 0-820 
 
 55'7 
 
 
 
 
 
 321 
 
 
 
 777 
 
 
 
 
 
 
 25l 
 
 May 26 
 
 
 
 
 
 
 (i63) 
 
 (55o) 
 
 (68g) 
 
 May 29 
 
 
 
 
 
 
 (>6 7 ) 
 
 (938) 
 
 ( 7 35) 
 
 147-090 
 
 326 
 
 o-5 1 5 
 
 60-7 
 
 i63'8 
 
 + i3-7 
 
 5o 
 
 i3o 
 
 
 149-780 
 
 
 o- 9 70 
 
 2 4 5-g 
 
 
 
 
 
 149 
 
 
 326 
 
 0-528 
 
 64-5 
 
 162-2 
 
 + 12-3 
 
 8 
 
 48 
 
 
 
 
 o'g66 
 
 2g5'6 
 
 
 
 
 
 4 2 9 
 
 
 326 
 
 0-558 
 
 64-5 
 
 1 6o-3 
 
 + i3-i 
 
 10 
 
 33 
 
 
 
 326 
 
 0-314 
 
 025'2 
 
 166-2 
 
 + H-3 
 
 17 
 
 76 
 
 
 
 326 
 
 0-622 
 
 65-o 
 
 i55-8 
 
 + '4'4 
 
 88 
 
 482 
 
 
 
 326 
 
 0-283 
 
 33o'7 
 
 i63'8 
 
 + i3'7 
 
 20 
 
 98 
 
 
 
 
 0-947 
 
 
 
 
 
 
 23g 
 
 
 326 
 
 o-3o5 
 
 333-g 
 
 163-6 
 
 4-15-3 
 
 O 
 
 24 
 
 
 May 27 
 
 
 
 
 
 
 (i56) 
 
 (6 9 3) 
 
 (23 9 ) 
 
 
 326 
 
 0-271 
 
 335-5 
 
 162-2 
 
 4-13-7 
 
 23 
 
 9 3 
 
 
 
 
 
 
 
 
 
 
 
 
 326 
 
 o-25o 
 
 332-7 
 
 162-3 
 
 + I2-2 
 
 16 
 
 44 
 
 
 147-113 
 
 326 
 
 o-5 1 5 
 
 60-6 
 
 163-5 
 
 + I3-8 
 
 38 
 
 I2O 
 
 
 
 326 
 
 0-206 
 
 342-1 
 
 160-2 
 
 + i3-4 
 
 4 
 
 34 
 
 
 
 526 
 
 o'53 1 
 
 64-0 
 
 161-8 
 
 4-12-6 
 
 10 
 
 68 
 
 
 
 326 
 
 O'2IO 
 
 337-7 
 
 160-2 
 
 -f 10-4 
 
 10 
 
 38 
 
 
 
 326 
 
 o-558 
 
 64-1 
 
 1 60-0 
 
 -f l3'2 
 
 8 
 
 48 
 
 
 
 326 
 
 0-262 
 
 356-6 
 
 1 56-5 
 
 + 14-5 
 
 132 
 
 6 49 
 
 
 
 326 
 
 0-621 
 
 64-7 
 
 155-6 
 
 4-14-6 
 
 go 
 
 453 
 
 
 
 3 2 6 
 
 0-268 
 
 7-1 
 
 153-6 
 
 + 14-8 
 
 14 
 
 99 
 
 
 
 
 o'gSo 
 
 62-8 
 
 
 
 
 
 219 
 
 
 32 7 
 
 o-g58 
 
 63-6 
 
 84-6 
 
 + 25-0 
 
 16 
 
 82 
 
 325 
 
 May 27 
 
 
 
 
 
 
 (55) 
 
 (689) 
 
 (219) 
 
 May 3o* 
 
 
 
 
 
 
 (252) 
 
 (1237) 
 
 (93) 
 
 147-908 
 
 326 
 
 0-367 
 
 46-4 
 
 164-6 
 
 + 13-8 
 
 21 
 
 76 
 
 
 
 
 
 
 
 
 
 
 
 
 326 
 
 0-377 
 
 53-o 
 
 162-6 
 
 + 12-3 
 
 2 9 
 
 114 
 
 
 i5o'785 
 
 3z6 
 
 0-485 
 
 3oi-2 
 
 167-6 
 
 + 14-0 
 
 '4 
 
 27 
 
 
 
 326 
 
 0-386 
 
 58-5 
 
 160-9 
 
 + IO-8 
 
 o 
 
 3o 
 
 
 
 326 
 
 0-404 
 
 3o3-3 i65-3 
 
 + i3-g 14 
 
 3o 
 
 
 
 326 
 
 0-416 
 
 55-i 
 
 1 60-0 
 
 + 12-9 
 
 
 
 26 
 
 
 
 326 
 
 0-438 
 
 3o2-o 
 
 164-7 
 
 + i2'g g 
 
 3o 
 
 
 
 326 
 
 0-455 
 
 58-7 
 
 107-0 
 
 + i2'g 
 
 27 
 
 '49 
 
 
 
 326 
 
 0-422 
 
 3o5-5 
 
 i63-o 
 
 + 13-7 
 
 10 
 
 28 
 
 
 
 326 
 
 0-487 
 
 5 7 -4 
 
 1 55-5 
 
 + 14-4 
 
 98 
 
 35g 
 
 
 
 326 
 
 o'4og 
 
 3o3'o 
 
 162-8 
 
 + 12-6 
 
 17 
 
 65 
 
 
 
 
 0-880 
 
 
 
 
 
 
 289 
 
 
 326 
 
 0-386 
 
 2 99'9 
 
 162-2 
 
 -r-io-6 
 
 
 
 9 
 
 
 May 28 
 
 
 
 
 
 
 ('75) 
 
 (754) 
 
 (289) 
 
 
 326 
 
 o-3g6 
 
 307-5 
 
 161-2 
 
 + i3-4 
 
 i5 
 
 7' 
 
 
 
 
 
 
 
 
 
 
 
 
 326 
 
 o-38o 
 
 3oi-g 
 
 i6i-5 
 
 + M-I 
 
 4 
 
 19 
 
 
 148-105 
 
 
 o-SSg 
 
 3o2'5 
 
 
 
 
 
 120 
 
 
 326 
 
 O-355 
 
 3ori 
 
 160-3 
 
 + IO'I 
 
 o 
 
 4 
 
 
 
 326 
 
 0-343 
 
 40-0 
 
 164-7 
 
 + 14'4 
 
 28 
 
 96 
 
 
 
 326 
 
 o-3o2 
 
 3i8'6 
 
 1 56-3 
 
 -I-H-S 
 
 166 
 
 755 
 
 
 
 326 
 
 o'35 1 
 
 47'4 
 
 162-5 
 
 + 12-9 
 
 38 
 
 i5o 
 
 
 
 32 7 
 
 0-880 
 
 6r3 
 
 84-4 
 
 + 247 
 
 21 
 
 77 
 
 
 
 326 
 
 0-356 
 
 53-7 
 
 160-9 
 
 + ii'3 
 
 10 
 
 27 
 
 
 
 327 
 
 0-907 
 
 6i-5 
 
 80-6 
 
 4-25-4 
 
 4 
 
 i3 
 
 35o c 
 
 
 326 
 
 o'3g2 
 
 5r3 
 
 i5g-6 
 
 + i3'4 
 
 5 
 
 24 
 
 
 May 3i* 
 
 
 
 
 
 
 (274) 
 
 (1128) 
 
 (35o) 
 
 * Indian photo. The Areas of Spots and Faculac are expressed in Millionths of the Sun's visible Hemisphere. 
 
REDUCTION OF SOLAR PHOTOGRAPHS THROUGHOUT 1878-1881. 
 
 25 
 
 MKASUKKS of POSITIONS ami ARKAS of SPOTS and FACUL.* upon the SUN'S DISK on PHOTOGRAPHS taken in the YEAR 1880 continued. 
 
 
 
 I)i>- 
 
 
 HKLIOHKAPHIC 
 
 SPOTS. 
 
 FACUL.K. 
 
 
 
 Dis- 
 
 
 HEUOGKAI-HIC 
 
 Sl'OTS. 
 
 FACUL.E. 
 
 Mean 
 Time. 
 
 No. of 
 Group, 
 
 iiml 
 
 Ll'ttiT 
 
 for 
 
 Spot. 
 
 tancc 
 from 
 
 (Yiilr.' 
 in 
 
 tlTTMS 
 
 of 
 
 Sun's 
 Kiiilius. 
 
 Position 
 
 AnjfU' 
 from 
 Sun's 
 Axis. 
 
 
 
 
 Mean 
 Solar 
 Time. 
 
 No. of 
 Group, 
 and 
 Letter 
 for 
 Spot. 
 
 tance 
 from 
 Centre 
 in 
 terms 
 of 
 Sun's 
 Radius. 
 
 Position 
 Angle 
 from 
 Sun's 
 Axis. 
 
 
 
 
 Longi- 
 tude. 
 
 l/iti- 
 tudo. 
 
 Ar.'a of 
 OMBKA 
 
 for cadi 
 
 Spot 
 
 (Mini lor 
 Day). 
 
 Area of 
 WHOLE 
 for c;u'h 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBRA 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 WHOLE 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 1880. 
 
 
 
 o 
 
 
 
 
 
 
 
 
 1880. 
 
 
 
 o 
 
 o 
 
 
 
 
 
 
 i5i d 866 
 
 
 0-890 
 
 293-3 
 
 
 
 
 
 182 
 
 i6o d - 9 85 
 
 
 0-920 
 
 3oo-o 
 
 
 
 
 
 352 
 
 
 326 
 
 0-682 
 
 291-2 
 
 168-8 
 
 + 14-0 
 
 8 
 
 28 
 
 
 
 328 
 
 0-384 
 
 3io-i 
 
 20'O 
 
 + 1 5-o 
 
 O 
 
 5 
 
 
 
 326 
 
 0-644 
 
 291-5 
 
 166-1 
 
 4- 1 3'4 
 
 9 
 
 42 
 
 
 
 328 
 
 0-354 
 
 3io'7 
 
 23-3 
 
 4-H' 
 
 
 
 I 
 
 
 
 326 
 
 o - 6io 
 
 29I-5 
 
 l63'4 
 
 + 127 
 
 i3 
 
 4' 
 
 
 
 328 
 
 0-328 
 
 314-4 
 
 21-3 
 
 4-14-0 
 
 7 
 
 i5 
 
 
 
 326 
 
 o'5q3 
 
 292-9 
 
 162-0 
 
 + i3-i 
 
 o 
 
 46 
 
 
 
 328 
 
 o-3 1 7 
 
 320-8 
 
 ig'2 
 
 4-14-9 
 
 5 
 
 7 
 
 
 
 3z6 
 
 0-585 
 
 2qo'6 
 
 161-8 
 
 + 11-6 
 
 
 
 '4 
 
 
 
 328 
 
 o-2g3 
 
 326-1 
 
 17-0 
 
 4-147 
 
 9 
 
 78 
 
 
 
 326 
 
 O'52 I 
 
 300-7 
 
 1 55-3 
 
 + i5'i 
 
 122 
 
 016 
 
 
 
 32g 
 
 0-812 
 
 117-7 
 
 3i6-8 
 
 -21-6 
 
 '4 
 
 28 
 
 45 1 nf 
 
 
 32 7 
 
 0-754 
 
 5 7 -2 
 
 84-3 
 
 + 23-8 
 
 16 
 
 52 
 
 
 June 10 
 
 
 
 
 
 
 (35) 
 
 (34) 
 
 (8o3) 
 
 June i * 
 
 32 7 
 
 0-789 
 
 57'5 
 
 8ro 
 
 + 24-9 
 
 (168) 
 
 20 
 (759) 
 
 28 4 / 
 
 (466) 
 
 161-712 
 
 
 o-g32 
 0-884 
 
 2 9 5-8 
 3n-3 
 
 
 
 
 
 410 
 348 
 
 i53'ii6 
 
 3z6 
 326 
 
 0-904 
 0-867 
 
 0-818 
 
 299-2 
 286-4 
 286-3 
 
 170-3 
 i65'o 
 
 4- 1 4 >0 
 
 + l3'2 
 
 7 
 o 
 
 i3 
 
 23 
 
 535 
 5o5 
 
 
 328 
 328 
 328 
 
 0-469 
 0-402 
 0-397 
 
 3oo-i 
 3o6-8 
 3o8-6 
 
 21-8 
 17-1 
 16-4 
 
 4-H'o 
 
 + 14-7 
 4-i5-i 
 
 6 
 
 4 
 6 
 
 '9 
 n 
 18 
 
 
 
 326 
 326 
 
 32 7 
 
 0-736 
 0-723 
 o-58g 
 
 289-4 
 291-9 
 45-3 
 
 i56'9 
 i55'4 
 84-3 
 
 4-i3-g 
 4- 1 5-5 
 f 24-2 
 
 27 
 39 
 i5 
 
 123 
 
 154 
 
 32 
 
 
 June n* 
 
 32g 
 32g 
 
 07^7 
 0-740 
 
 121-6 
 
 121*2 
 
 3i6 - i 
 3i 4 -8 
 
 -217 
 -21-9 
 
 9 
 
 (20) 
 
 22 
 
 7 
 (77) 
 
 (758) 
 
 
 
 0-91 3 
 
 O'rtfi^ 
 
 
 
 
 
 
 IO2 
 
 1 ':-> 
 
 162-933 
 
 328 
 
 0-647 
 
 292-3 
 
 "97 
 
 4- 1 5-o 
 
 7 
 
 24 
 
 
 June 2 
 
 
 y 
 
 
 
 
 (88) 
 
 (345) 
 
 193 
 ('294) 
 
 June 12 
 
 328 
 
 o-6o5 
 
 294-4 
 
 16-2 
 
 4-i5-2 
 
 12 
 (19) 
 
 42 
 (66) 
 
 
 I 53 - 7 2.5 
 
 326 
 326 
 326 
 
 0-927 
 
 O'qo4 
 0-820 
 
 284-8 
 284-6 
 286-9 
 
 170-5 
 167-2 
 157-2 
 
 + 13-6 
 4-I3-I 
 
 4-13-7 
 
 2 
 O 
 
 18 
 
 16 
 
 7 
 86 
 
 
 164-580 
 June 14! 
 
 
 0-879 
 
 286-6 
 
 
 
 
 
 656 
 (656) 
 
 June 3* 
 
 3z6 
 
 32 7 
 
 0-806 
 o-5 10 
 0-904 
 
 290-0 
 36-3 
 77-0 
 
 155-3 
 
 84-0 
 
 + i5-g 
 + 24-3 
 
 3i 
 1 1 
 
 (62) 
 
 i3i 
 35 
 
 (285) 
 
 3g6 /< 
 
 9 5 
 (490 
 
 165-700 
 June 1 5* 
 
 33o 
 33 1 
 
 o-g6 4 
 o-g52 
 0-981 
 
 285-2 
 
 65-g 
 65-7 
 
 234-1 
 226-8 
 
 + 23-3 
 4-24-1 
 
 5i 
 o 
 (5i) 
 
 161 
 
 29 
 (190) 
 
 214 
 
 432 c 
 
 (646) 
 
 io5'o66 
 June 4 
 
 326 
 326 
 
 32 7 
 
 0-946 
 0-928 
 0-388 
 
 287-0 
 285-c 
 349-8 
 
 1 55-8 
 i52'g 
 gO'O 
 
 4- 1 6-0 
 + i3-8 
 + 22-4 
 
 
 
 6 
 
 o 
 (6) 
 
 44 
 H 
 '9 
 (77) 
 
 867 c 
 
 (867) 
 
 1 66-733 
 June 1 6* 
 
 33o 
 33 1 
 33 1 
 
 0-864 
 0-918 
 o-g6i 
 
 63- 4 
 63-8 
 64-4 
 
 234-2 
 226-7 
 2i8-5 
 
 4-23-4 
 4-24-5 
 4-25-0 
 
 29 
 o 
 o 
 09) 
 
 a 
 
 21 
 (| 7 6) 
 
 258/ 
 (258) 
 
 106789 
 June 6* 
 
 328 
 
 328 
 
 0-698 
 0-723 
 
 68-6 
 
 70-4 
 
 20-8 
 1 8-5 
 
 + 4'9 
 + 14-1 
 
 10 
 2 
 (12) 
 
 36 
 8 
 
 (44) 
 
 
 167-782 
 
 33o 
 33 1 
 
 o-8o3 
 0-743 
 0-81 3 
 
 2g3-2 
 5g-2 
 60-7 
 
 233-5 
 226-5 
 
 4-23-4 
 4-24-3 
 
 26 
 7 
 
 1 60 
 23 
 
 i5g 
 
 
 
 
 
 
 
 
 
 
 
 33 1 
 
 o-87g 
 
 62-2 
 
 2i8-5 
 
 4-25-0 
 
 9 
 
 25 
 
 
 io8-o53 
 
 328 
 328 
 
 0-468 
 o'oiS 
 
 58-5 
 62-1 
 
 21-9 
 i8-3 
 
 -t-14'5 
 
 4-I4-2 
 
 4 
 
 
 
 1 1 
 
 6 
 
 
 
 33 1 
 332 
 
 0-91 5 
 0-980 
 
 62-2 
 iog-i 
 
 2i3-5 
 
 20O-2 
 
 4-25-g 
 -18-4 
 
 10 
 
 98 
 
 44 
 367 
 
 4 8o/ 
 632 c 
 
 June 7 
 
 
 
 
 
 
 (4) 
 
 (-7) 
 
 
 June 17* 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 169-001 
 
 
 o'82g 
 
 243-2 
 
 
 
 
 
 36o 
 
 
 
 
 
 
 
 
 
 
 
 
 o-g76 
 
 248-2 
 
 
 
 
 
 i3 7 
 
 108-687 
 
 328 
 
 0-356 
 
 46-5 
 
 22-4 
 
 4-14-6 
 
 6 
 
 '7 
 
 
 
 33o 
 
 0-576 
 
 49'4 
 
 232'9 
 
 4-23-5 
 
 3o 
 
 I 52 
 
 
 
 328 
 
 c-3 79 
 
 48-6 
 
 20-8 
 
 4- 1 5-o 
 
 o 
 
 10 
 
 
 
 33 1 
 
 0-66 1 
 
 53-7 
 
 225-6 
 
 4-243 
 
 2 
 
 7 
 
 
 
 328 
 
 0-404 
 
 5r6 
 
 1 8-5 
 
 4-14-6 
 
 
 
 7 
 
 
 
 33 1 
 
 0-736 
 
 57-5 
 
 218-4 
 
 4-24-5 
 
 4 
 
 12 
 
 
 
 32 9 
 
 0-991 
 
 1117 
 
 3i6-6 
 
 -21-4 
 
 
 
 42 
 
 2540 
 
 
 33 1 
 
 0-752 
 
 58-3 
 
 2 1 6-8 
 
 4-24-4 
 
 6 
 
 27 
 
 
 June 8* 
 
 
 
 
 
 
 (6) 
 
 (76) 
 
 (25 4 ) 
 
 
 33 1 
 
 0-798 
 
 58-7 
 
 212-3 
 
 4-25-6 
 
 26 
 
 72 
 
 z68/ 
 
 
 
 
 
 
 
 
 
 
 
 332 
 
 0-882 
 
 118-9 
 
 203-6 
 
 24-3 
 
 9 
 
 12 
 
 1112 C 
 
 109701 
 
 
 0-888 
 
 295-7 
 
 
 
 
 
 224 
 
 
 332 
 
 0-894 
 
 II2-I 
 
 200-4 
 
 -i 8-8 
 
 89 
 
 3 4 5 
 
 
 
 328 
 
 0-243 
 
 6-2 
 
 22-g 
 
 4-14-6 
 
 4 
 
 16 
 
 
 
 332 
 
 0-920 
 
 1147 
 
 '97'3 
 
 -21-8 
 
 o 
 
 29 
 
 
 
 3*8 
 
 0-279 
 
 22'4 
 
 18-1 
 
 4-15-5 
 
 
 
 32 
 
 
 
 332 
 
 0-9^7 
 
 11 3'9 
 
 194-3 
 
 -21-6 
 
 
 
 34 
 
 
 
 328 
 
 0-272 
 
 26-2 
 
 17-3 
 
 + 147 
 
 o 
 
 9 
 
 
 
 332 
 
 0-946 
 
 III-2 
 
 192-3 
 
 -9'4 
 
 o 
 
 H 
 
 
 
 028 
 
 0-288 
 
 2 7 -6 
 
 i6-5 
 
 4-15-3 
 
 o 
 
 9 
 
 
 
 332 
 
 o-gSg 
 
 1127 
 
 189-9 
 
 21-2 
 
 o 
 
 4 3 
 
 
 
 32Q 
 
 0-938 
 
 u3-i 
 
 3i6- 7 
 
 21-4 
 
 15 
 
 47 
 
 385 c 
 
 
 
 0-943 
 
 66'7 
 
 
 
 
 
 237 
 
 June c,* 
 
 
 
 
 
 09) 
 
 d47) 
 
 (609) 
 
 June 1 8 
 
 
 
 
 
 
 (166) 
 
 (757) 
 
 (21 If) 
 
 * Indian photo. The Areas of Spots and Faculae are expressed in Millionths of the Sun's visible Hemisphere. t Melbourne photo. 
 
 a 64893. 
 
 D 
 
26 
 
 REDUCTION OF SOLAR PHOTOGRAPHS THROUGHOUT 1878-1881. 
 
 MEASURES of POSITIONS and AREAS of SPOTS and FACULJE upon the SUN'S DISK on PHOTOGRAPHS taken in the YEAR 1880 continued. 
 
 
 
 Dis- 
 
 
 IlELJOOKAl'HIC 
 
 SPOTS. 
 
 FACULA. 
 
 
 
 Dis- 
 
 
 HKLIOGRAFHIC 
 
 SPOTS. 
 
 FACUI./E. 
 
 Mean 
 Solar 
 Time. 
 
 No. of 
 3roup, 
 and 
 Letter 
 for 
 Spot. 
 
 tance 
 from 
 Centre 
 in 
 terms 
 of 
 Sun's 
 Radius. 
 
 Position 
 Angle 
 from 
 Sun's 
 Axis. 
 
 
 
 
 Mean I 
 Solar 
 Time. 
 
 No. of 
 Jroup, 
 and 
 Letter 
 for 
 Spot. 
 
 tance 
 from 
 Centre 
 in 
 terms 
 of 
 Sun's 
 Radius. 
 
 Position 
 Angle 
 from 
 Sun's 
 Axis. 
 
 
 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBRA 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 SVHOLE 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBRA 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 WHOLE 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 1880. 
 
 
 
 
 
 o 
 
 o 
 
 
 
 
 1880. 
 
 
 
 o 
 
 o 
 
 o 
 
 
 
 
 I70 d- o34 
 
 
 0-912 
 
 240-7 
 
 
 
 
 
 473 
 
 I72 d 734 
 
 33o 
 
 0-495 
 
 3l7'7 
 
 233-0 
 
 + 23-3 
 
 '7 
 
 64 
 
 
 
 33o 
 
 0-438 
 
 32'0 
 
 233'O 
 
 + 23-5 
 
 64 
 
 329 
 
 
 
 33 1 
 
 0-379 
 
 347-8 
 
 216-8 
 
 4-23-8 
 
 3 
 
 1 1 
 
 
 
 33 1 
 
 o-63i 
 
 41-3. 
 
 219-0 
 
 + 29-8 
 
 O 
 
 II 
 
 
 
 33 1 
 
 0-400 
 
 2-5 
 
 210-7 
 
 4-25-g 
 
 1 1 
 
 40 
 
 
 
 33 1 
 
 0-594 
 
 49'4 
 
 2 I 8'0 
 
 4-24-2 
 
 5 
 
 6 
 
 
 
 332 
 
 0-468 
 
 163-4 
 
 203-4 
 
 24-5 
 
 89 
 
 3g3 
 
 
 
 33 1 
 
 0-673 
 
 52-5 
 
 21 I'4 
 
 + 25-6 
 
 H 
 
 52 
 
 
 
 332 
 
 0-387 
 
 1 52-7 
 
 20I-I 
 
 i 8-0 
 
 49 
 
 197 
 
 
 
 33 1 
 
 0-657 
 
 5 7 -i 
 
 2II-I 
 
 + 22-3 
 
 9 
 
 19 
 
 
 
 332 
 
 0-485 
 
 i52'7 
 
 197-8 
 
 23-4 
 
 6 
 
 37 
 
 
 
 33 1 
 
 0*646 
 
 65-g 
 
 209-7 
 
 + 16-7 
 
 o 
 
 9 
 
 
 
 332 
 
 o-5o6 
 
 i55'7 
 
 198-5 
 
 -25-3 
 
 H 
 
 53 
 
 
 
 332 
 
 0-773 
 
 u 6-3 
 
 200*7 
 
 -187 
 
 62 
 
 267 
 
 9 37 c 
 
 
 332 
 
 0-514 
 
 i52-6 
 
 1967 
 
 25-0 
 
 2 
 
 '9 
 
 
 
 332 
 
 0-786 
 
 iig-3 
 
 200-4 
 
 -21-3 
 
 12 
 
 5 4 
 
 
 
 332 
 
 o-53 1 
 
 1 52-4 
 
 196-0 
 
 25-g 
 
 O 
 
 27 
 
 
 
 332 
 
 0-792 
 
 121-6 
 
 20O-5 
 
 -23-2 
 
 40 
 
 66 
 
 
 
 332 
 
 0-545 
 
 i5rg 
 
 196-2 
 
 -26-6 
 
 5 
 
 24 
 
 
 
 332 
 
 0-802 
 
 n5'o 
 
 197-7 
 
 -i 8-6 
 
 O 
 
 8 
 
 
 June 2 2* 
 
 
 
 
 
 
 (190) 
 
 (865) 
 
 
 
 332 
 
 0-808 
 
 ng-3 
 
 198-3 
 
 -22-4 
 
 7 
 
 H 
 
 
 
 
 
 
 
 
 
 
 
 
 332 
 
 0-8 1 5 
 
 I21'5 
 
 198-2 
 
 24-0 
 
 1 1 
 
 32 
 
 
 
 
 
 
 
 
 
 
 
 
 332 
 
 o-85i 
 
 117-1 
 
 1 93- 1 
 
 -21-7 
 
 10 
 
 27 
 
 
 173-964 
 
 33o 
 
 0-669 
 
 3o3'7 
 
 232-8 
 
 4-23-6 
 
 19 
 
 82 
 
 
 
 332 
 
 o-857 
 
 ii3'9 
 
 1917 
 
 1 9-3 
 
 '4 
 
 37 
 
 
 
 33 1 
 
 0-462 
 
 33i-5 
 
 209-7 
 
 4-26-1 
 
 o 
 
 12 
 
 
 
 332 
 
 0-873 
 
 n 5-5 
 
 190-2 
 
 2I'O 
 
 7 
 
 28 
 
 
 
 33 1 
 
 0-464 
 
 341-3 
 
 205'2 
 
 4-28-2 
 
 
 
 2 
 
 
 
 
 0-860 
 
 65-3 
 
 
 
 
 
 33 1 
 
 
 332 
 
 0-466 
 
 193-6 
 
 202-4 
 
 24-6 
 
 104 
 
 475 
 
 
 
 
 0-967 
 
 74-8 
 
 
 
 
 
 344 
 
 
 332 
 
 0-353 
 
 '94'9 
 
 2OI'O 
 
 -17-6 
 
 60 
 
 249 
 
 
 June 19 
 
 
 
 
 
 
 (255) 
 
 (95 9 ) 
 
 (2085) 
 
 
 332 
 
 o'3go 
 
 igo-z 
 
 1997 
 
 2O'2 
 
 23 
 
 4 5 
 
 
 
 
 
 
 
 
 
 
 
 
 332 
 
 0-433 
 
 186-4 
 
 lg8-6 
 
 23-7 
 
 42 
 
 120 
 
 
 
 
 
 
 
 
 
 
 
 
 332 
 
 0-382 
 
 184-8 
 
 I97-5 
 
 20-1 
 
 
 
 16 
 
 
 170766 
 
 33o 
 
 0-377 
 
 10-8 
 
 233-5 
 
 + 23-6 
 
 29 
 
 89 
 
 
 
 332 
 
 0-470 
 
 1 80-8 
 
 ig5-g 
 
 -25-6 
 
 25 
 
 80 
 
 
 
 33 1 
 
 0-493 
 
 38-5 
 
 2i8-3 
 
 +24-4 
 
 o 
 
 9 
 
 
 
 332 
 
 0-468 
 
 177-0 
 
 '94' 
 
 25-5 
 
 
 
 24 
 
 
 
 33 1 
 
 0520 
 
 42-0 
 
 2i5'5 
 
 + 24-4 
 
 5 
 
 22 
 
 
 
 332 
 
 0-418 
 
 i65-8 
 
 i8g-3 
 
 21'6 
 
 o 
 
 57 
 
 
 
 33 1 
 
 0-567 
 
 43-8 
 
 212-2 
 
 + z5-8 
 
 2 
 
 '9 
 
 
 June 23 
 
 
 
 
 
 
 (273) 
 
 (1167) 
 
 
 
 33 1 
 
 o-58o 
 
 44-3 
 
 lira 
 
 + 26-1 
 
 5 
 
 18 
 
 
 
 
 
 
 
 
 
 
 
 
 332 
 
 o'66o 
 
 119-1 
 
 200-9 
 
 17-2 
 
 o 
 
 i5 
 
 
 
 
 
 
 
 
 
 
 
 
 332 
 
 0-681 
 
 120'^ 
 
 1997 
 
 -18-6 
 
 56 
 
 3i6 
 
 
 175-027 
 
 332 
 
 0-541 
 
 227-2 
 
 206-3 
 
 -.9-3 
 
 I 
 
 10 
 
 
 
 332 
 
 0-673 
 
 I29-3 
 
 203-4 
 
 -237 
 
 81 
 
 248 
 
 
 
 332 
 
 0-461 
 
 223-3 
 
 200-7 
 
 -17-3 
 
 57 
 
 275 
 
 
 
 332 
 
 0-705 
 
 128-8 
 
 200-9 
 
 24-6 
 
 8 
 
 22 
 
 
 
 332 
 
 0-488 
 
 219-6 
 
 200-7 
 
 19-8 
 
 23 
 
 68 
 
 
 
 332 
 
 0-726 
 
 I25'4 
 
 198-0 
 
 -23-3 
 
 8 
 
 37 
 
 
 
 332 
 
 o"555 
 
 2i5-3 
 
 2O2-0 
 
 24-6 
 
 no 
 
 5ig 
 
 
 
 332 
 
 0-720 
 
 128-1 
 
 1.987 
 
 -25-2 
 
 u 
 
 42 
 
 
 
 332 
 
 0-507 
 
 2IO'I 
 
 I 9 7'5 
 
 23-6 
 
 8 
 
 35 
 
 
 
 332 
 
 0-748 
 
 127-2 
 
 196-8 
 
 -25-4 
 
 3 
 
 '7 
 
 
 
 332 
 
 0-460 
 
 2 I 2'g 
 
 196-9 
 
 20-3 
 
 24 
 
 1 09 
 
 
 
 332 
 
 o- 7 63 
 
 I2O'I 
 
 ig3'o 
 
 2I'I 
 
 o 
 
 10 
 
 
 
 332 
 
 o-5 1 2 
 
 203-4 
 
 194-4 
 
 25-6 
 
 20 
 
 68 
 
 
 
 332 
 
 0-770 
 
 1 1 6-4 
 
 igi-3 
 
 -187 
 
 6 
 
 3i 
 
 
 June 24 
 
 
 
 
 
 
 (H9) 
 
 (1084) 
 
 
 
 332 
 
 0-790 
 
 II8-3 
 
 igo'o 
 
 2O'7 
 
 3 
 
 17 
 
 
 
 
 
 
 
 
 
 
 
 
 
 0-929 
 
 73-9 
 
 
 
 
 
 567 
 
 
 
 
 
 
 
 
 
 
 June 20* 
 
 
 
 
 
 
 (217) 
 
 (912) 
 
 (56 7 ) 
 
 175-601 
 
 332 
 
 0-624 
 
 223-8 
 
 202-O 
 
 24-4 
 
 76 
 
 423 
 
 
 
 
 
 
 
 
 
 
 
 
 332 
 
 0-571 
 
 228-8 
 
 200-9 
 
 lg-8 
 
 
 
 5o 
 
 
 
 
 
 
 
 
 
 
 
 
 332 
 
 0-545 
 
 23 1 -g 
 
 200-4 
 
 -17-4 
 
 49 
 
 3o6 
 
 
 171-969 
 
 
 o-g3o 
 
 2447 
 
 
 
 
 
 148 
 
 
 332 
 
 0-568 
 
 219*8 
 
 i97'i 
 
 23'4 
 
 o 
 
 IOI 
 
 
 
 
 0-9 1 3 
 
 3og'8 
 
 
 
 
 
 99 
 
 
 332 
 
 O-523 
 
 223-1 
 
 196-1 
 
 2O- 1 
 
 o 
 
 68 
 
 
 
 33o 
 
 0-405 
 
 334-7 
 
 232-8 
 
 + 23'4 
 
 '9 
 
 1 06 
 
 
 
 332 
 
 0-563 
 
 2l3'2 
 
 193-7 
 
 25-6 
 
 
 
 128 
 
 
 
 33 1 
 
 o-385 
 
 14-4 
 
 216-0 
 
 4-23-8 
 
 i5 
 
 26 
 
 
 June 25' 
 
 
 
 
 
 
 (125) 
 
 (1076) 
 
 
 
 33 1 
 
 0-436 
 
 22-8 
 
 2IT2 
 
 4-25-6 
 
 28 
 
 4 5 
 
 
 
 
 
 
 
 
 
 
 
 
 332 
 
 0-414 
 
 144-0 
 
 207-2 
 
 -17-5 
 
 o 
 
 IO 
 
 
 177-630 
 
 
 o-gi5 
 
 298-3 
 
 
 
 
 
 536 
 
 
 332 
 
 0-489 
 
 1 35-5 
 
 200'g 
 
 18-4 
 
 60 
 
 281 
 
 
 
 332 
 
 0-879 
 
 246-3 
 
 2o5'3 
 
 19-2 
 
 5 
 
 i3 
 
 
 
 332 
 
 o-5o5 
 
 141-4 
 
 202'^ 
 
 21-2 
 
 
 
 4 
 
 
 
 332 
 
 o-85i 
 
 240-2 
 
 200-3 
 
 23-3 
 
 122 
 
 733 
 
 
 
 332 
 
 0-029 
 
 i 47 -3 
 
 203-7 
 
 24-4 
 
 7 
 
 368 
 
 
 
 332 
 
 0-849 
 
 245-7 
 
 201-7 
 
 i8-g 
 
 23 
 
 82 
 
 
 
 332 
 
 0-553 
 
 141-0 
 
 99'8 
 
 23-5 
 
 
 
 35 
 
 
 
 332 
 
 0-828 
 
 247-8 
 
 99'9 
 
 16-6 
 
 5o 
 
 345 
 
 
 
 332 
 
 o-583 
 
 142-2 
 
 198-7 
 
 25-4 
 
 20 
 
 47 
 
 
 
 332 
 
 0-811 
 
 243-1 
 
 I97'i 
 
 :g-8 
 
 o 
 
 u 
 
 
 
 332 
 
 0-610 
 
 140-3 
 
 196-3 
 
 26-0 
 
 16 
 
 Si 
 
 
 
 332 
 
 0-809 
 
 234-6 
 
 194-0 
 
 -26-0 
 
 25 
 
 1 5 4 
 
 
 
 332 
 
 o-55i 
 
 126-0 
 
 194-3 
 
 -17-0 
 
 
 
 7 
 
 
 
 332 
 
 o-8o5 
 
 236-7 
 
 '94'4 
 
 24-3 
 
 14 
 
 56 
 
 
 
 332 
 
 o-656 
 
 124-3 
 
 186-9 
 
 '9'9 
 
 o 
 
 H 
 
 
 
 332 
 
 07 q6 
 
 240-4 
 
 194-8 
 
 -21-3 
 
 3 
 
 10 
 
 
 
 
 0-759 
 
 
 
 
 
 
 336 
 
 
 332 
 
 0-786 
 
 243-0 
 
 194-6 
 
 19-0 
 
 9 
 
 36 
 
 
 
 
 0-871 
 
 
 
 
 
 
 862 
 
 
 333 
 
 0*946 
 
 1 19*2 
 
 80-0 
 
 26-4 
 
 i3 
 
 35 
 
 384 e 
 
 June 2 1 
 
 
 
 
 
 
 (23 4 ) 
 
 (994) 
 
 (1445) 
 
 June 2 7* 
 
 
 
 
 
 
 (264) 
 
 (H75) 
 
 (920) 
 
 * Indian photo. The Areas of Spots and Facula; are expressed in Millionths of the Sun's risible Hemisphere. t Melbourne photo. 
 
RKDUCTION OF SOLAR PHOTOGRAPHS THROUGHOUT 1878-1881. 
 
 27 
 
 MKisn;i:s of POSITIONS and AREAS of SPOTS and FACUI,< upon the SUN'S DISK on PHOTOGRAPHS taken in the YEAR 1880 continued. 
 
 
 
 Dis- 
 
 
 HKI.IOORAPHIC 
 
 SPOTS. 
 
 FACUIuE. 
 
 
 
 Dis- 
 
 
 HELIOGBAPHIC 
 
 SPOTS. 
 
 FACUL*. 
 
 
 No. of 
 
 tance 
 
 . . 
 
 
 
 
 
 No. of 
 
 tance 
 
 4V ... 
 
 
 
 
 
 Mean 
 Solar 
 Time. 
 
 Group, 
 and 
 Letter 
 for 
 Spot. 
 
 from 
 Centre 
 in 
 
 terms 
 
 of 
 Sun's 
 
 Radius. 
 
 L os:tion 
 Angle 
 
 from 
 Sun's 
 Axis. 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 r.MliKA 
 for each 
 Spot 
 (and for 
 Day). 
 
 Arr:i of 
 WHOLE 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 Mean 
 Solar . 
 Time. 
 
 Group, 
 and 
 Letter 
 for 
 Spot. 
 
 irom 
 Centre 
 in 
 terms 
 of 
 Sun's 
 liadius. 
 
 L osition 
 Angle 
 from 
 Sun's 
 Axis. 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBRA 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 WHOLE 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 1880. 
 
 
 
 
 
 o 
 
 o 
 
 
 
 
 1880. 
 
 
 
 o 
 
 
 
 o 
 
 
 
 
 I7i)' 1 -oi l 
 
 
 o-863 
 
 2g5-2 
 
 
 
 
 
 297 
 
 i85d- 9 38 
 
 333 
 
 0-777 
 
 2 1 5'7 
 
 71-0 
 
 -36-i 
 
 27 
 
 86 
 
 462 p 
 
 
 332 
 
 0-964 
 
 244-9 
 
 2OO-3 
 
 -23-2 
 
 70 
 
 33 1 
 
 1083/ 
 
 
 333 
 
 0-766 
 
 2IO-2 
 
 66-3 
 
 38-2 
 
 2 
 
 i5 
 
 
 
 332 
 
 0-908 
 
 25ri 
 
 200'! 
 
 -I7-2 
 
 3o 
 
 92 
 
 
 
 336 
 
 o-5o8 
 
 I4O-3 
 
 17-0 
 
 19-6 
 
 12 
 
 32 
 
 
 
 332 
 
 o-q3g 
 
 240-1 
 
 94'2 
 
 -267 
 
 
 
 33 
 
 
 
 336 
 
 0-525 
 
 136-6 
 
 47 
 
 ig - o 
 
 O 
 
 10 
 
 
 
 333 
 
 0-826 
 
 124-8 
 
 79'8 
 
 -26-2 
 
 7 
 
 12 
 
 
 
 336 
 
 o-55i 
 
 135-6 
 
 12-9 
 
 19-8 
 
 17 
 
 53 
 
 
 
 333 
 
 0-908 
 
 1 33- 1 
 
 7 3'2 
 
 36-7 
 
 11 
 
 81 
 
 
 
 
 0-888 
 
 ii 6'o 
 
 * 
 
 
 
 
 335 
 
 
 333 
 
 o- 9 3 7 
 
 133-4 
 
 68-3 
 
 -38-7 
 
 o 
 
 3 4 
 
 
 July 5 
 
 
 
 
 
 
 (58) 
 
 (196) 
 
 (797) 
 
 
 
 0-865 
 
 5 9 -5 
 
 
 
 
 
 142 
 
 
 
 
 
 
 
 
 
 
 June 28 
 
 
 
 
 
 
 (118) 
 
 (583) 
 
 (205 4 ) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 1 86-631 
 
 333 
 
 0-834 
 
 221-5 
 
 70-8 
 
 -35-g 
 
 o 
 
 4 5 
 
 
 
 
 
 
 
 
 
 
 
 
 336 
 
 0-436 
 
 167-0 
 
 i 7 -5 
 
 2O'O 
 
 o 
 
 3i 
 
 
 180-086 
 
 
 0-938 
 
 294-3 
 
 
 
 
 
 36 9 
 
 
 336 
 
 0-475 
 
 148-0 
 
 12-4 
 
 2O- 1 
 
 21 
 
 73 
 
 
 
 
 0-867 
 
 285-2 
 
 
 
 
 
 543 
 
 
 336 
 
 0-467 
 
 146*1 
 
 I2'O 
 
 -lg-2 
 
 O 
 
 22 
 
 
 
 332 
 
 0-992 
 
 243-0 
 
 "947 
 
 26-3 
 
 
 
 3 
 
 io58/ 
 
 
 
 0-907 
 
 118-4 
 
 
 
 
 
 1854 
 
 
 334 
 
 0-462 
 
 222-0 
 
 133-3 
 
 17-2 
 
 28 
 
 148 
 
 
 
 
 o-g64 
 
 75-3 
 
 
 
 
 
 3366 
 
 
 334 
 
 0-446 
 
 214-9 
 
 i3o - i 
 
 -i 8-5 
 
 8 
 
 46 
 
 
 July 6f 
 
 
 
 
 
 
 (21) 
 
 ('70 
 
 (5220) 
 
 
 335 
 
 - 444 
 
 321-5 
 
 i3i-g 
 
 + 23-1 
 
 3 
 
 12 
 
 
 
 
 
 
 
 
 
 
 
 
 335 
 
 0-431 
 
 326-0 
 
 1297 
 
 + 23-7 
 
 
 
 8 
 
 
 
 
 
 
 
 
 
 
 
 
 333 
 
 0-826 
 
 138-6 
 
 72-2 
 
 36-2 
 
 II 
 
 3o 
 
 412 np 
 
 188-903 
 
 
 0-945 
 
 287-0 
 
 
 
 
 
 1OI 
 
 
 333 
 
 0-878 
 
 137-9 
 
 65-8 
 
 -38-7 
 
 18 
 
 40 
 
 
 
 333 
 
 o-g8o 
 
 23r8 
 
 70-2 
 
 36-2 
 
 38 
 
 i go 
 
 
 June 29 
 
 
 
 
 
 
 (68) 
 
 (287) 
 
 (2382) 
 
 
 333 
 
 0*961 
 
 228-0 
 
 63-5 
 
 38-5 
 
 61 
 
 2 4 5 
 
 
 
 
 
 
 
 
 
 
 
 
 336 
 
 0-526 
 
 218-1 
 
 18-0 
 
 20-7 
 
 '9 
 
 80 
 
 
 
 
 
 
 
 
 
 
 
 
 336 
 
 0-496 
 
 2 1 5- 1 
 
 1 5-4 
 
 20-2 
 
 2 
 
 6 
 
 
 i8ro45 
 
 
 0-988 
 
 243-2 
 
 
 
 
 
 698 
 
 
 336 
 
 o-479 
 
 208-7 
 
 12-1 
 
 21-0 
 
 24 
 
 82 
 
 
 
 
 0-900 
 
 286-0 
 
 
 
 
 
 371 
 
 
 
 0-808 
 
 I2I-8 
 
 
 
 
 
 118 
 
 
 33 4 
 
 0-604 
 
 235-g 
 
 1 33- 2 
 
 -17-1 
 
 4 
 
 i58 
 
 
 
 
 0-941 
 
 1I2'3 
 
 
 
 
 
 26g 
 
 
 334 
 
 0-576 
 
 233-9 
 
 i3o-8 
 
 -17-1 
 
 o 
 
 12 
 
 
 July 8 
 
 
 
 
 
 
 (44) 
 
 (6o3) 
 
 (1210) 
 
 
 33 4 
 
 0-58; 
 
 23o-6 
 
 i3o - 4 
 
 -19-1 
 
 o 
 
 7 
 
 
 
 
 
 
 
 
 
 
 
 
 33 4 
 
 o - 565 
 
 23o-8 
 
 129-1 
 
 -18-1 
 
 7 
 
 23 
 
 
 1 89*980 
 
 333 
 
 0-99 5 
 
 23o-5 
 
 62-7 
 
 -38-6 
 
 5 9 
 
 230 
 
 
 
 333 
 
 o-583 
 
 i 4 5-6 
 
 80-4 
 
 25-8 
 
 o 
 
 ii 
 
 
 
 336 
 
 0-677 
 
 233-3 
 
 18-8 
 
 -20-5 
 
 8 
 
 29 
 
 
 
 333 
 
 0-743 
 
 147-3 
 
 72-2 
 
 35-9 
 
 9 
 
 27 
 
 
 
 336 
 
 0-657 
 
 231-7 
 
 i6-g 
 
 20-6 
 
 o 
 
 7 
 
 
 
 333 
 
 0-8 1 1 
 
 144-2 
 
 64-5 
 
 -38-6 
 
 8 
 
 17 
 
 
 
 336 
 
 o'63o 
 
 229-6 
 
 14-2 
 
 2o - 6 
 
 
 
 6 
 
 
 June 3o 
 
 
 
 
 
 
 (65) 
 
 (255) 
 
 (1069) 
 
 
 336 
 
 0-608 
 
 227-3 
 
 12-0 
 
 -20-7 
 
 i5 
 
 56 
 
 
 
 
 
 
 
 
 
 
 
 
 
 0-743 
 
 132-3 
 
 
 
 
 
 226 
 
 
 
 
 
 
 
 
 
 
 
 
 0-845 
 
 117-0 
 
 
 
 
 
 227 
 
 182*902 
 
 
 0-965 
 
 293-2 
 
 
 
 
 
 608 
 
 
 
 0-946 
 
 nr3 
 
 
 
 
 
 261 
 
 
 
 
 0-828 
 
 296-2 
 
 
 
 
 
 109 
 
 July 9 
 
 
 
 
 
 
 (82) 
 
 (328) 
 
 (i 100) 
 
 
 334 
 
 0-853 
 
 247-6 
 
 132-6 
 
 17-1 
 
 3 9 
 
 i85 
 
 319 */ 
 
 
 
 
 
 
 
 
 
 
 
 333 
 
 0-627 
 
 172-9 
 
 71-8 
 
 -35-1 
 
 6 
 
 3o 
 
 
 190-897 
 
 336 
 
 0-798 
 
 240-5 
 
 ig-o 
 
 20-4 
 
 6 
 
 9 
 
 
 
 333 
 
 o'65g 
 
 170-2 
 
 69-1 
 
 -3 7 -i 
 
 5 
 
 21 
 
 
 
 336 
 
 0788 
 
 239-4 
 
 17-8 
 
 20-8 
 
 o 
 
 8 
 
 
 
 333 
 
 0-676 
 
 162-8 
 
 62-8 
 
 -36- 9 
 
 6 
 
 II 
 
 
 
 
 0-745 
 
 124-3 
 
 
 
 
 
 230 
 
 July 2 
 
 
 
 
 
 
 (56) 
 
 (247) 
 
 (io36) 
 
 
 
 0-875 
 
 114-3 
 
 
 
 
 
 204 
 
 
 
 
 
 
 
 
 
 
 July 10 
 
 
 
 
 
 
 (6) 
 
 (7) 
 
 (434) 
 
 183-997 
 
 334 
 
 0-954 
 
 200-6 
 
 i33-o 
 
 -17-4 
 
 4' 
 
 2O6 
 
 355 sf 
 
 igi-638 
 
 336 
 
 0-882 
 
 2 4 3-6 
 
 '9' 1 
 
 20-8 
 
 3 
 
 10 
 
 290 c 
 
 
 333 
 
 0-648 
 
 192-2 
 
 72-4 
 
 -35-8 
 
 2 
 
 6 
 
 
 July 1 1 * 
 
 
 
 
 
 
 (3) 
 
 (10) 
 
 (290) 
 
 
 333 
 
 0-649 
 
 188-6 
 
 69-6 
 
 -36- 4 
 
 10 
 
 65 
 
 
 
 
 
 
 
 
 
 
 
 
 333 
 
 0-666 
 
 187-0 
 
 68-6 
 
 -37-9 
 
 7 
 
 9 
 
 
 192*891 
 
 
 o-g55 
 
 246-0 
 
 
 
 
 
 621 
 
 
 333 
 
 o - 66 1 
 
 179-2 
 
 62-1 
 
 -37-8 
 
 7 
 
 9 
 
 
 July 12* 
 
 
 
 
 
 
 
 
 (621) 
 
 July 3 
 
 
 
 
 
 
 (67) 
 
 (3o5) 
 
 (355) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 193-922 
 
 
 0-799 
 
 240-3 
 
 
 
 
 
 i5 4 
 
 184-871 
 
 334 
 
 0-992 
 
 25rg 
 
 l32'2 
 
 -17-4 
 
 5 7 
 
 i go 
 
 720 c 
 
 
 33? 
 
 o-652 
 
 197-8 
 
 3o5-3 
 
 34-0 
 
 o 
 
 26 
 
 
 
 333 
 
 0-689 
 
 202-0 
 
 69-8 
 
 -36-3 
 
 3i 
 
 86 
 
 
 
 
 o-885 
 
 65-3 
 
 
 
 
 
 88 
 
 
 333 
 
 0-698 
 
 I98-2 
 
 67-2 
 
 -38-o 
 
 8 
 
 33 
 
 
 July 1 3 
 
 
 
 
 
 
 (o) 
 
 (.26) 
 
 (242) 
 
 
 336 
 
 0-688 
 
 122-6 
 
 i3-5 
 
 19-0 
 
 ii 
 
 42 
 
 
 
 
 
 
 
 
 
 
 
 
 
 0-969 
 
 II2'6 
 
 
 
 
 
 421 
 
 194-897 
 
 
 0-967 
 
 in 
 
 
 
 
 
 2 7 5 
 
 July 4* 
 
 
 
 
 
 
 (107) 
 
 (35i) 
 
 (1141) 
 
 July 14 
 
 
 
 
 
 
 
 
 (2 7 5) 
 
 * Indian photo. The Areas of Spots and Facnlac are expressed in Millionths of the Sun's visible Hemisphere. t Melbourne photo. 
 
 D 2 
 
28 
 
 REDUCTION OF SOLAR PHOTOGRAPHS THROUGHOUT 1878-1881. 
 
 MEASURES of POSITIONS and AREAS of SPOTS and FACUL^E upon the SUN'S DISK on PHOTOGRAPHS taken in the YKAR 1880 continued. 
 
 
 
 Dis- 
 
 
 HEUOGKAPHIC 
 
 SPOTS. 
 
 FACDLjE. 
 
 
 
 Dis- 
 
 
 HEMOGHAl'HIC 
 
 Sl'OTS. 
 
 FACUL.&. 
 
 
 No. of 
 
 tance 
 
 
 
 
 
 
 No. of 
 
 tance 
 from 
 
 . . 
 
 
 
 
 Mean 
 Solar 
 Time. 
 
 jroup, 
 and 
 Letter 
 for 
 
 Spot. 
 
 from 
 Centre 
 in 
 terms 
 of 
 Sun's 
 Radius. 
 
 Position 
 Angle 
 from 
 Sun's 
 Axis. 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBRA 
 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 WHOLE 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 Mean' 
 Solar 
 Time. 
 
 ^roup, 
 and 
 Letter 
 for 
 Spot. 
 
 Centre 
 in 
 terms 
 of 
 Sun's 
 Radius. 
 
 i osition 
 Angle 
 from 
 Sun's 
 Axis. 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBRA 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 WHOLE 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (anil for 
 Day). 
 
 1880. 
 
 
 
 
 
 o 
 
 o 
 
 
 
 
 1880. 
 
 
 
 
 
 
 
 o 
 
 
 
 
 ig5 d -g5i 
 
 
 o'goS 
 
 n5-8 
 
 
 
 
 
 419 
 
 2o5 d -o83 
 
 
 0-875 
 
 240-8 
 
 
 
 
 
 1296 
 
 July 1 5 
 
 
 
 
 
 
 
 
 (419) 
 
 
 338 
 
 0-934 
 
 290-8 
 
 2l3'I 
 
 + 21-3 
 
 O 
 
 '4 
 
 2 4 2 / 
 
 I97-538 
 
 
 o'82g 
 
 118-8 
 
 
 
 
 
 1840 
 
 
 338 
 338 
 
 o-g33 
 O-653 
 
 292-5 
 2 99'4 
 
 212-8 
 lSl'7 
 
 -t-22-g 
 
 
 
 49 
 
 27 
 23l 
 
 
 July 17! 
 
 
 0-874 
 
 77 -3 
 
 
 
 
 
 1271 
 (3iu) 
 
 
 338 
 338 
 
 0*625 
 O'6o6 
 
 297-2 
 3oi-5 
 
 180-1 
 
 '-7-7 
 
 4-20-g 
 + 22'g 
 
 6 
 8 
 
 22 
 
 67 
 
 
 200'll3 
 
 July ig 
 
 
 0-914 
 0-868 
 
 246-5 
 64-3 
 
 
 
 
 
 358 
 406 
 
 (764) 
 
 July 24 
 
 338 
 
 o-5gi 
 0-834 
 
 3o3-5 
 141*2 
 
 176-1 
 
 -t-23'5 
 
 '7 
 (80) 
 
 86 
 (447) 
 
 83 
 (1621) 
 
 201-087 
 
 338 
 
 o-3o6 
 
 28-0 
 
 187-8 
 
 + 20-6 
 
 H 
 
 76 
 
 
 207-053 
 
 
 o'g52 
 
 242-8 
 
 
 
 
 
 Bti 
 
 
 338 
 
 0-406 
 
 47-8 
 
 i77'9 
 
 4-20-6 
 
 17 
 
 123 
 
 
 
 338 
 
 o-go2 
 
 293-5 
 
 i8i-q 
 
 -r-23'5 
 
 32 
 
 208 
 
 11570 
 
 
 
 0-975 
 
 25o-3 
 
 
 
 
 
 1 60 
 
 
 338 
 
 0-886 
 
 291-7 
 
 179-8 
 
 + 21-7 
 
 
 
 9 
 
 
 
 
 0-894 
 
 233-2 
 
 
 
 
 
 184 
 
 
 338 
 
 0-866 
 
 290-7 
 
 77 - 4 
 
 + 20-7 
 
 6 
 
 22 
 
 
 
 
 0-822 
 
 60-2 
 
 
 
 
 
 404 
 
 
 338 
 
 0-846 
 
 294-3 
 
 174-6 
 
 4-23-4 
 
 4 
 
 28 
 
 
 
 
 o-g3o 
 
 1 14-0 
 
 
 
 
 
 i3o 
 
 
 340 
 
 0-847 
 
 64-3 
 
 60-8 
 
 + 24-6 
 
 o 
 
 10 
 
 338 c 
 
 July 20 
 
 
 
 
 
 
 (Si) 
 
 ('99) 
 
 (878) 
 
 
 340 
 
 0-857 
 
 63-2 
 
 5 9 -3 
 
 + 25-7 
 
 5 
 
 20 
 
 
 
 
 
 
 
 
 
 
 
 
 340 
 
 0-879 
 
 62-5 
 
 57-1 
 
 + 26-7 
 
 o 
 
 2 
 
 
 202-007 
 
 338 
 
 6-269 
 
 339-2 
 
 190-2 
 
 + 19-6 
 
 4 
 
 3i 
 
 
 
 340 
 
 o'Sqo 
 
 64-3 
 
 55-4 
 
 + 25-3 
 
 
 
 8 
 
 
 
 338 
 
 0-288 
 
 35o-7 
 
 187-3 
 
 + 21-6 
 
 17 
 
 5 4 
 
 
 
 3 4 i 
 
 0-962 
 
 78-0 
 
 43-0 
 
 + 1 3' i 
 
 o 
 
 8 
 
 36o sf 
 
 
 338 
 
 0-298 
 
 io-3 
 
 181-1 
 
 + 22'I 
 
 39 
 
 1 54 
 
 
 
 
 0-948 
 
 i32'7 
 
 
 
 
 
 241 
 
 
 338 
 
 0-240 
 
 H'9 
 
 180-7 
 
 4-18-5 
 
 o 
 
 , 32 
 
 
 July 26 
 
 
 
 
 
 
 (47) 
 
 (3i5) 
 
 (2907) 
 
 
 338 
 338 
 338 
 33g 
 
 0-270 
 o-338 
 o'2g5 
 0-970 
 
 1 5-3 
 20-7 
 28-6 
 67-5 
 
 1 80-1 
 177-0 
 175-8 
 107-8 
 
 + 20-2 
 + 20-0 
 
 + 23-5 
 
 4 
 
 10 
 
 o 
 o 
 
 5 
 
 72 
 
 4 
 33 
 
 284 c 
 
 207-946 
 
 338 
 338 
 340 
 
 '979 
 0-968 
 0-924 
 
 244-0 
 293-I 
 293-7 
 6ro 
 
 182-2 
 173-4 
 59-4 
 
 + 23-7 
 4-24-6 
 
 29 
 o 
 5 
 
 187 
 42 
 
 32 
 
 55 9 
 
 747* 
 
 365 c 
 
 
 
 0-810 
 
 5r8 
 
 
 
 
 
 123 
 
 
 340 
 
 799 
 
 62-2 
 
 54-6 
 
 + 25-4 
 
 o 
 
 14 
 
 
 July 21 
 
 
 0-844 
 
 Il8'2 
 
 
 
 (74) 
 
 (385) 
 
 97 
 (5o 4 ) 
 
 
 3 4 i 
 341 
 
 0-884 
 0-916 
 
 78-6 
 77-8 
 
 43-4 
 3g'l 
 
 + 12-7 
 
 4 
 
 2 
 
 20 
 10 
 
 263 c 
 
 
 
 
 
 
 
 
 
 
 
 
 O'q2O 
 
 i35-o 
 
 
 
 
 
 38o 
 
 202-719 
 
 338 
 338 
 
 0-371 
 o-355 
 
 3l2'6 
 
 314-7 
 
 191-8 
 iqo'5 
 
 + 19-5 
 + 19-5 
 
 i 
 
 
 
 ii 
 
 20 
 
 
 July 27 
 
 
 .7 
 
 
 
 
 (4) 
 
 (3o5) 
 
 (23i4) 
 
 
 338 
 
 0-360 
 
 321-3 
 
 188-9 
 
 + 21-4 
 
 4 
 
 18 
 
 
 2o8'5go 
 
 340 
 
 o-665 
 
 57-6 
 
 5g'l 
 
 4-25-3 
 
 O 
 
 66 
 
 
 
 338 
 
 0-344 
 
 324-4 
 
 187-3 
 
 + 21-2 
 
 12 
 
 46 
 
 
 
 341 
 
 o-83i 
 
 77-2 
 
 41-0 
 
 + i3-8 
 
 37 
 
 192 
 
 
 
 338 
 
 0'25l 
 
 337-1 
 
 180-9 
 
 + 18-5 
 
 O 
 
 4 5 
 
 
 
 
 o-85o 
 
 140-8 
 
 
 
 
 
 782 
 
 
 338 
 
 0-294 
 
 34.2-0 
 
 1 8 0-6 
 
 + 2I-4 
 
 48 
 
 258 
 
 
 
 
 0-923 
 
 134-9 
 
 
 
 
 
 856 
 
 
 338 
 
 0-3 1 2 
 
 35i-8 
 
 177-8 
 
 + 23-1 
 
 17 
 
 78 
 
 
 July 28| 
 
 
 
 
 
 
 (37) 
 
 (258) 
 
 (i638) 
 
 
 333 
 
 0-307 
 
 356'4 
 
 176-2 
 
 + 23-0 
 
 3 
 
 25 
 
 
 
 
 
 
 
 
 
 
 
 
 338 
 
 0-362 
 
 356 - 7 
 
 176-3 
 
 + 26-3 
 
 o 
 
 9 
 
 
 210-026 
 
 
 o-g53 
 
 294-8 
 
 
 
 
 
 536 
 
 
 33g 
 
 0-923 
 
 67-3 
 
 107-7 
 
 +22-9 
 
 ii 
 
 32 
 
 63i c 
 
 
 
 0-881 
 
 241-7 
 
 
 
 
 
 ii5 
 
 
 
 0-975 
 
 127-6 
 
 
 
 
 
 22g 
 
 
 
 0-736 
 
 210-7 
 
 
 
 
 
 61 
 
 July 22* 
 
 
 
 
 
 
 (86) 
 
 (5 4 2) 
 
 (860) 
 
 
 340 
 
 0-448 
 
 41-7 
 
 5g-5 
 
 + 25-1 
 
 10 
 
 3o 
 
 
 
 
 
 
 
 
 
 
 
 
 341 
 
 0-625 
 
 76-4 
 
 40-0 
 
 i 1 3-o 
 
 9 
 
 38 
 
 
 204-073 
 
 
 0-787 
 
 240-0 
 
 
 
 
 
 1297 
 
 
 
 o'752 
 
 164-2 
 
 
 
 
 
 221 
 
 
 338 
 
 0-8 1 8 
 
 293-1 
 
 2II-0 
 
 + 2i-q 
 
 
 
 8 
 
 3i3 p 
 
 
 
 o-863 
 
 143-3 
 
 
 
 
 
 32 7 
 
 
 338 
 
 0-789 
 
 2q6'2 
 
 207-5 
 
 + 23-8 
 
 o 
 
 8 
 
 
 
 
 0-904 
 
 1 17-0 
 
 
 
 
 
 379 
 
 
 338 
 
 o-553 
 
 3oi-6 
 
 187-4 
 
 + 21-4 
 
 o 
 
 6 
 
 
 
 
 0-974 
 
 109-2 
 
 
 
 
 
 i6g 
 
 
 338 
 
 0-462 
 
 3oi-g 
 
 i8r5 
 
 H-iS-g 
 
 o 
 
 i5 
 
 
 July 29 
 
 
 
 
 
 
 (9) 
 
 (68) 
 
 (1808) 
 
 
 338 
 
 0-490 
 
 3o8'7 
 
 i8i-5 
 
 + 22-6 
 
 65 
 
 290 
 
 
 
 
 
 
 
 
 
 
 
 
 338 
 
 0-444 
 
 3o6'o 
 
 179-5 
 
 4-20-0 
 
 4 
 
 18 
 
 
 
 
 
 
 
 
 
 
 
 
 338 
 
 0-418 
 
 2 997 
 
 I79-3 
 
 + 16-8 
 
 o 
 
 9 
 
 
 21 roog 
 
 
 o 948 
 
 246-0 
 
 
 
 
 
 47 
 
 
 338 
 
 0-464 
 
 314-7 
 
 177-6 
 
 + 23-5 
 
 32 
 
 94 
 
 
 
 
 0-806 
 
 2 1 3-5 
 
 
 
 
 
 66 
 
 
 33 S 
 
 0-422 
 
 3i2-i 
 
 176-7 
 
 + 21-4 
 
 o 
 
 6 
 
 
 
 
 0-751 
 
 3o5-5 
 
 
 
 
 
 382 
 
 
 338 
 
 0-406 
 
 3l0'2 
 
 176-3 
 
 + 20-8 
 
 o 
 
 9 
 
 
 
 340 
 
 o-33g 
 
 14-8 
 
 5g-g 
 
 + 24-9 
 
 5 
 
 37 
 
 
 
 33g 
 
 0-781 
 
 64-7 
 
 107-2 
 
 + 22-9 
 
 
 
 7 
 
 444 "/ 
 
 
 
 0-775 
 
 i55 - 7 
 
 
 
 
 
 700 
 
 
 
 o-8g5 
 
 134-7 
 
 
 
 
 
 280 
 
 
 
 o-85o 
 
 121-7 
 
 
 
 
 
 555 
 
 July 23 
 
 
 
 
 
 
 (101) 
 
 (5 7 o) 
 
 (233 4 ) 
 
 July 3o 
 
 
 
 
 
 
 (5) 
 
 (37) 
 
 (i 7 5o) 
 
 * Indian photo. The Areas of Spots and Fiieula! are expressed in Millionths of the Sun's visible Hemisphere. t Melbourne photo. 
 
REDUCTION OF SOLAR PHOTOGRAPHS THROUGHOUT 1878-1881. 
 
 MK.VTKKS of POSITIONS and AKKAS of SPOTS and FArrr./K upon the SUN'S DISK on PHOTOGRAPHS taken in the YEAR 1880 continued. 
 
 
 
 Dis- 
 
 
 HKLIUUBAPIIIC 
 
 SPOTS. 
 
 FACCL*. 
 
 
 
 Dis- 
 
 
 HKI.IOGUAI-HIC 
 
 SPOTS. 
 
 FACUI..K. 
 
 
 Xo. of 
 
 tance 
 from 
 
 . . 
 
 
 
 
 
 No. of 
 
 tance 
 
 . . 
 
 
 
 
 HMD 
 
 Solar 
 
 Timo. 
 
 Group 
 and 
 
 I.ittlT 
 
 for 
 
 Spot. 
 
 Centre 
 in 
 terms 
 of 
 Sun's 
 Radius 
 
 1 osition 
 Angle 
 from 
 Sun's 
 Axis. 
 
 Longi- 
 tuae. 
 
 Lati- 
 tude. 
 
 Area of 
 
 1MBRA 
 for each 
 S]ot 
 (and for 
 Day). 
 
 Area of 
 WHOLE 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 Mean 
 
 Solar 
 Time. 
 
 Group 
 aud 
 Letter 
 for 
 Spot. 
 
 from 
 Centre 
 in 
 terms 
 of 
 Sun's 
 Radius 
 
 "osition 
 Angle 
 from 
 Sun's 
 Axis. 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 r.MISKA 
 tor raeh 
 Spot 
 (aud for 
 Day). 
 
 Area of 
 WHOLE 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 l88o. 
 
 
 
 o 
 
 o 
 
 
 
 
 
 
 1880. 
 
 
 
 
 
 
 
 o 
 
 
 
 
 21 i d -g3o 
 
 
 0-820 
 
 297-5 
 
 
 
 
 
 267 
 
 21 8^649 
 
 
 0-960 
 
 224-7 
 
 
 
 
 
 238 
 
 
 340 
 
 o-33g 
 
 341-9 
 
 5g-8 
 
 -r-H'6 
 
 5 
 
 9 
 
 
 
 
 0-869 
 
 241-5 
 
 
 
 
 
 26 7 
 
 
 
 0-757 
 
 160-7 
 
 
 
 
 
 356 
 
 
 342 
 
 O-I0 4 
 
 35i-5 3 2 5-2 
 
 4-12-2 
 
 i3o 
 
 49 
 
 
 
 
 0-776 
 
 1 22-7-1 
 
 
 
 
 3 77 
 
 
 342 
 
 0-082 
 
 1 1-6 
 
 323-3 
 
 -f-io-8 
 
 4 
 
 '4 
 
 
 
 
 o-g3i 
 
 108-2 
 
 
 
 
 
 89 
 
 
 3 4 2 
 
 o-o7g 
 
 21-4 
 
 322-7 
 
 4-10-5 
 
 o 
 
 IO 
 
 
 Julj 3i 
 
 
 
 
 
 
 (5) 
 
 ('9) 
 
 (1089) 
 
 
 342 
 
 o'ogg 
 
 28-2 
 
 32.1-6 
 
 4-H-3 
 
 o 
 
 '4 
 
 
 
 
 
 
 
 
 
 
 
 
 342 
 
 O-I22 
 
 3o-5 
 
 320-7 
 
 4-12-3 
 
 o 
 
 17 
 
 
 
 
 
 
 
 
 
 
 
 
 3 4 2 
 
 0-128 
 
 447 
 
 3lg'l 
 
 4- 1 1 -5 
 
 14 
 
 72 
 
 
 2i3'7g3 
 
 342 
 
 0-882 
 
 79-6 326-2 
 
 4- 12'0 
 
 5i 
 
 485 
 
 
 
 342 
 
 O'lSg 
 
 57-0 
 
 3 1 5-o 
 
 4-I2-I 
 
 4 
 
 i3 
 
 
 
 3 4 2 
 
 0-9 1' 
 
 79-6 322-0 
 
 4- 12-0 
 
 o 
 
 5 
 
 
 
 343 
 
 0- 999 
 
 66-5 
 
 235-1 
 
 4-23-6 
 
 o 
 
 83 
 
 
 
 3 4 2 
 
 0-921 
 
 79-4 320-5 
 
 4-I2'I 
 
 
 
 i5 
 
 
 Aug. 7* 
 
 
 
 
 
 
 (1 52) 
 
 (73) 
 
 
 
 3 4 2 
 
 o-g33 
 
 80-8 
 
 3ig-i 
 
 4-10-7 
 
 46 
 
 25 7 
 
 53o c 
 
 
 
 
 
 
 
 
 
 
 Aug. 2* 
 
 
 
 
 
 
 (97) 
 
 (762) 
 
 (53o) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 219-734 
 
 3430 
 
 0*899 
 
 247-7 
 
 lO'I 
 
 -16-8 
 
 3 
 
 16 
 
 86 c 
 
 2i5-og3 
 
 3 4 2 
 
 0703 
 
 82-5 
 
 326-5 
 
 + 9-6 
 
 o 
 
 2 
 
 162 f 
 
 
 3430 
 
 0-884 
 
 247-0 
 
 8-1 
 
 i6-g 
 
 9 
 
 33 
 
 
 
 342 
 
 o 708 
 
 79-0 
 
 326-2 
 
 4-I2M 
 
 104 
 
 4 55 
 
 
 
 3 4 36 
 
 o-56o 
 
 212-9 
 
 329-1 
 
 -21-9 
 
 6 
 
 27 
 
 
 
 342 
 
 0-720 
 
 82-1 
 
 325'2 
 
 + 9'9 
 
 o 
 
 1 1 
 
 
 
 342 
 
 0-274 
 
 291-5 
 
 325-0 
 
 4-u-g 
 
 124 
 
 447 
 
 
 
 3 4 2 
 
 0-735 
 
 80- 1 
 
 323-g 
 
 4-11-4 
 
 
 
 9 
 
 
 
 342 
 
 0*190 
 
 3oo-3 
 
 3 1 9-6 
 
 4-ir8 
 
 2 
 
 21 
 
 
 
 3 4 2 
 
 0-758 
 
 77'8 
 
 322-0 
 
 4-13-2 
 
 o 
 
 3 
 
 
 
 342 
 
 0-170 
 
 295-9 
 
 3i8'g 
 
 4-10-6 
 
 l6 
 
 58 
 
 
 
 3 4 2 
 
 0-760 
 
 81-2 
 
 321-7 
 
 4-10-7 
 
 5 
 
 3 4 
 
 
 
 342 
 
 0-123 
 
 338-g 
 
 3i2-6 
 
 4-i3-o 
 
 O 
 
 20 
 
 
 
 3 4 2 
 
 0-779 
 
 79-8 
 
 32O'O 
 
 4-ir8 
 
 10 
 
 24 
 
 
 
 342 
 
 0-126 
 
 346-5 
 
 311-7 
 
 4-13-4 
 
 
 
 10 
 
 
 
 3 4 2 
 
 0-792 
 
 82-0 
 
 3i8-8 
 
 4-10-1 
 
 16 
 
 i5o 
 
 
 
 342 
 
 0-125 
 
 6-5 
 
 3og-2 
 
 4-13-6 
 
 2 
 
 7 
 
 
 
 342 
 
 0-801 
 
 80-2 
 
 317-9 
 
 4-II-5 
 
 o 
 
 2 4 
 
 
 
 343 
 
 o-g55 
 
 66-g 
 
 236-3 
 
 + 23-8 
 
 48 
 
 292 
 
 642*7 
 
 
 342 
 
 0-874 
 
 79'4 
 
 3oo - i 
 
 4-12-2 
 
 
 
 i5 
 
 
 Aug. 8* 
 
 
 
 
 
 
 (210) 
 
 (940 
 
 (7*8) 
 
 Aug. 3 
 
 
 
 
 
 
 (i 35) 
 
 (727) 
 
 (162) 
 
 
 
 
 
 
 
 
 
 
 215-735 
 
 342 
 
 o'6oo 
 
 777 
 
 326-1 
 
 4-12-3 
 
 9 3 
 
 411 
 
 
 221-082 
 
 
 0-900 
 
 24g-3 
 
 
 
 
 
 230 
 
 
 342 
 
 0-629 
 
 79-1 
 
 323-g 
 
 4-11-6 
 
 8 
 
 56 
 
 
 
 342 
 
 0-540 
 
 281-8 
 
 324-7 
 
 4-M-8 
 
 9 1 
 
 481 
 
 
 
 342 
 
 0-657 
 
 80-4 
 
 321-7 
 
 4-io-g 
 
 16 
 
 5 4 
 
 
 
 342 
 
 0-466 
 
 283-2 
 
 
 4- 1 1-8 
 
 o 
 
 6 
 
 
 
 342 
 
 0-679 
 
 79' 
 
 320-O 
 
 4-11-9 
 
 6 
 
 '9 
 
 
 
 3 4 2 
 
 0-454 
 
 280-2 
 
 3ig-i 
 
 4-10-4 
 
 6 
 
 16 
 
 
 
 342 
 
 0-696 
 
 8r6 
 
 3 1 8-6 
 
 4- io-3 
 
 32 
 
 1 58 
 
 
 
 3 4 2 
 
 o-3g3 
 
 286-6 
 
 3i 4 - 7 
 
 + 12-4 
 
 IO 
 
 24 
 
 
 
 342 
 
 0-779 
 
 78% 
 
 3u-5 
 
 4-12-8 
 
 i5 
 
 3o 
 
 
 
 3 4 2 
 
 0-376 
 
 287-4 
 
 3 1 3-6 
 
 4-12-5 
 
 
 
 7 
 
 
 
 3 4 2 
 
 o'85o 
 
 77-6 
 
 3o 4 -3 
 
 4- 1 3-7 
 
 2 
 
 12 
 
 
 
 342 
 
 0-347 
 
 2gr2 
 
 3n-5 
 
 4-13-3 
 
 
 
 2 
 
 
 Aug. 4* 
 
 
 
 
 
 
 (172) 
 
 (740) 
 
 
 
 342 
 
 o'3og 
 
 2 9 5-g 
 
 308-7 
 
 4- 1 3-g 
 
 i3 
 
 3o 
 
 
 2i6'6g4 
 
 
 0-891 
 
 223-9 
 
 
 
 
 
 470 
 
 
 343 
 344 
 
 0-838 
 0-942 
 
 65-7 
 ur3 
 
 235-8 
 225- 4 
 
 4-23-8 
 -17-5 
 
 44 
 44 
 
 25o 
 i5o 
 
 741 */ 
 
 127 c 
 
 
 342 
 
 3 4 2 
 
 0-423 
 0-480 
 
 74-5 
 78-9 
 
 325-7 
 321-7 
 
 4-I2-I 
 
 4-10-8 
 
 102 
 
 7 
 
 499 
 35 
 
 
 
 340 
 3 4 6 
 
 0-976 
 o'gSi 
 
 6g-3 
 111*3 
 
 2i3-5 
 216-7 
 
 4-21-6 
 19-2 
 
 4 5 
 o 
 
 166 
 48 
 
 2i5 n 
 io3/> 
 
 
 342 
 
 342 
 
 0-507 
 o-5 1 5 
 
 77'4 
 79-1 
 
 320-0 
 
 3ig-3 
 
 4-117 
 4-io-g 
 
 o 
 
 2 
 
 '7 
 1 1 
 
 
 Aug. 9 
 
 
 
 
 
 
 (253) 
 
 (1180) 
 
 (1416) 
 
 
 342 
 
 0-026 
 
 80-9 
 
 3i8-5 
 
 4- 10-0 
 
 35 
 
 161 
 
 
 
 
 
 
 
 
 
 
 
 
 342 
 
 0-528 
 
 78-6 
 
 3i8-5 
 
 4- 1 1-3 
 
 5 
 
 2 4 
 
 
 
 
 
 
 
 
 
 
 
 
 342 
 
 0-604 
 
 77-5 
 
 3i3-2 
 
 4- 12-5 
 
 '4 
 
 59 
 
 
 221-907 
 
 
 0-785 
 
 235-7 
 
 
 
 
 
 141 
 
 Aug. 5* 
 
 
 
 
 
 
 (i65) 
 
 (806) 
 
 (470) 
 
 
 3 4 2 
 
 o-68 4 
 
 280-5 
 
 324-5 
 
 4-ii-g 
 
 in 
 
 461 
 
 
 217-594 
 
 
 0-916 
 
 223-6 
 
 
 
 
 
 io3o 
 
 
 342 
 342 
 
 0-6 1 3 
 
 o-5 7 , 
 
 278-4 
 281-5 
 
 3ig-2 
 3 1 6-0 
 
 4-10-3 
 4-irq 
 
 o 
 II 
 
 22 
 
 
 
 
 0-887 
 
 279-8 
 
 
 
 
 
 80 1 
 
 
 342 
 
 o'55o 
 
 283-3 
 
 314-4 4-127 
 
 o 
 
 2 
 
 
 
 342 
 
 0-196 
 
 70-2 
 
 327-4 
 
 4- 1 o-o 
 
 
 
 5 
 
 
 
 342 
 
 o-5 1 3 
 
 285-1 
 
 311-7 4-i3-3 
 
 2 
 
 1 I 
 
 
 
 3 4 2 
 
 3 4 2 
 3 4 2 
 3 4 2 
 
 o- 2 1 5 
 0-246 
 
 0-299 
 0-348 
 
 70-7 
 64-4 
 7 3-2 
 76-8 
 
 326-4 
 325-1 
 321-3 
 3i8'i 
 
 4- 10-2 
 
 4-12-2 
 
 4-io-g 
 
 4- 1 o-o 
 
 o 
 
 77 
 
 
 32 
 
 38i 
 24 
 1 33 
 
 
 
 342 
 343 
 3 44 
 344 
 
 0-470 
 0-741 
 0-867 
 0-896 
 
 287-3 
 63-3 
 114-4 
 1 14-2 
 
 3o8'7 4-i3-8 
 235'Q 4-24-0 
 225-7 -17-4 
 
 222-1 l8'3 
 
 '4 
 
 104 
 
 27 
 o 
 
 3o 
 32g 
 i53 
 1 1 
 
 480 if 
 325 c 
 
 Aug. 6f 
 
 342 
 342 
 
 0-420 
 
 73-8 
 7 3-5 
 
 3 1 3-g 
 312-4 
 
 4-12-5 
 4-i2-g 
 
 1 1 
 
 (120) 
 
 2 4 
 35 
 (5og) 
 
 (,,, 
 
 Aug. 10 
 
 345 
 346 
 
 0-925 
 0-934 
 
 69-6 
 1 1 3-5 
 
 2 I 3-0 
 2l6'4 
 
 4-21-3 
 -19-1 
 
 28 
 8 
 (3o5) 
 
 23g 
 70 
 (i 33 4 ) 
 
 425 nf 
 38i c 
 
 ('757) 
 
 Indian photo. The Areas of Spots and Faculic are exprefsed in MiUionthi of the Sun's risible Hemisphere. t Melbourne photo. 
 
so 
 
 REDUCTION OF SOLAR PHOTOGRAPHS THROUGHOUT 1878-1881. 
 
 MEASURES of POSITIONS and AREAS of SPOTS and FACDL;E upon the SUN'S DISK on PHOTOGRAPHS taken in the YEAU 1880 continued. 
 
 
 
 Dis- 
 
 
 HELIOGRAPH ic 
 
 SPOTS. 
 
 FACUL*:. 
 
 
 
 Dis- 
 
 
 HELIOGKAPHIC 
 
 SPOTS. 
 
 FACUL.E. 
 
 
 No. of 
 
 tance 
 
 . 
 
 
 
 
 
 No. of 
 
 tance 
 
 
 
 
 
 
 Mean 
 Solar 
 Time. 
 
 Group, 
 and 
 Letter 
 for 
 Spot. 
 
 from 
 Centre 
 in 
 terms 
 of 
 Sun's 
 Radius. 
 
 Position 
 Angle 
 from 
 Sun's 
 Axis. 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBRA 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 WHOLE 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 Mean 
 Solar 
 Time. 
 
 Group, 
 and 
 Letter 
 for 
 Spot. 
 
 from 
 Centre 
 in 
 terms 
 of 
 Sun's 
 Radius. 
 
 i OSltlOI] 
 
 Angle 
 from 
 Sun's 
 Axis. 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBRA 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 \V HOLE 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 
 Day). 
 
 1880. 
 
 
 
 
 
 
 
 
 
 
 
 
 1880. 
 
 
 
 
 
 
 
 o 
 
 
 
 
 222 d 'g6g 
 
 3 4 2 
 
 o-83g 
 
 280-4 
 
 324-6 
 
 4-12-3 
 
 89 
 
 443 
 
 3g2 c 
 
 22g d 74i 
 
 3 47 
 
 0-979 
 
 288-9 
 
 257-4 
 
 + '9'9 
 
 20 
 
 io5 
 
 385/ 
 
 
 342 
 
 0-761 
 
 279-6 
 
 317-0 
 
 + 11 -5 
 
 o 
 
 13 
 
 
 
 343 
 
 0-848 
 
 2g5'0 
 
 235-3 
 
 + 24-8 
 
 35 
 
 227 
 
 616 c 
 
 
 342 
 
 o-665 
 
 284-2 
 
 308-7 
 
 -f-14'3 
 
 o 
 
 10 
 
 
 
 3 4 4 
 
 O'SlO 
 
 244-0 
 
 227-0 
 
 i 6-3 
 
 17 
 
 I IO 
 
 
 
 343 
 
 0-585 
 
 56-5 
 
 235-0 
 
 + 24-4 
 
 4 5 
 
 4 25 
 
 
 
 346 
 
 0-714 
 
 236-4 
 
 2l6'2 
 
 -17-8 
 
 4 
 
 8 
 
 
 
 344 
 
 0-738 
 
 120-6 
 
 225-7 
 
 -17-1 
 
 16 
 
 79 
 
 
 
 346 
 
 0'7o5 
 
 238-6 
 
 216-4 
 
 -16-2 
 
 i 
 
 5 
 
 
 
 345 
 
 o-8i3 
 
 69-0 
 
 2,3-i 
 
 ^f-20-g 
 
 38 
 
 2 4 5 
 
 3i6w/ 
 
 
 346 
 
 0-700 
 
 235-0 
 
 214-7 
 
 -18-1 
 
 1 1 
 
 33 
 
 
 
 346 
 
 0-835 
 
 118-4 
 
 2 1 6-3 
 
 ig-3 
 
 16 
 
 &7 
 
 H9/ 
 
 
 3 4 6 
 
 o-685 
 
 233-6 
 
 2l3'I 
 
 -i 8-3 
 
 22 
 
 65 
 
 
 Aug. 1 1 
 
 
 
 
 
 
 (204) 
 
 (1272) 
 
 (957) 
 
 
 346 
 
 0-657 
 
 23o-8 
 
 2 ID' I 
 
 -187 
 
 
 
 5 
 
 
 
 
 
 
 
 
 
 
 
 
 346 
 
 0-660 
 
 229-5 
 
 209-7 
 
 ig-5 
 
 5 
 
 21 
 
 
 
 
 
 
 
 
 
 
 
 
 346 
 
 0-667 
 
 228-1 
 
 20g-0 
 
 20'I 
 
 21 
 
 7 
 
 
 223-985 
 
 
 0-967 
 
 245-0 
 
 
 
 
 
 io3 
 
 
 346 
 
 0-644 
 
 224-4 
 
 206-5 
 
 21-3 
 
 5 
 
 23 
 
 
 
 
 749 
 
 235'c 
 
 
 
 
 
 67 
 
 
 346 
 
 0-638 
 
 225-5 
 
 206'6 
 
 20-4 
 
 o 
 
 6 
 
 
 
 342 
 
 0-940 
 
 281-0 
 
 324-5 
 
 + 12-6 
 
 1 06 
 
 4^9 
 
 97 7 nf 
 
 
 346 
 
 0-633 
 
 223-8 
 
 2o5'6 
 
 2I'O 
 
 I 
 
 6 
 
 
 
 342 
 
 0-898 
 
 27g-2 
 
 3i8-2 
 
 + U'2 
 
 3 
 
 20 
 
 
 
 345 
 
 o-5gg 
 
 297-4 
 
 212-5 
 
 4-217 
 
 4 
 
 204 
 
 
 
 343 
 
 0-436 
 
 43-6 
 
 234-0 
 
 + 24-6 
 
 I 10 
 
 444 
 
 
 
 348 
 
 o-33o 
 
 327-5 
 
 188-9 
 
 + 22-8 
 
 9 
 
 37 
 
 
 
 344 
 
 o-5g6 
 
 i3o-6 
 
 225'6 
 
 16-9 
 
 24 
 
 i3i 
 
 
 
 348 
 
 o-3 1 5 
 
 3297 
 
 187-6 
 
 + 22-5 
 
 
 
 4 
 
 
 
 345 
 
 0-665 
 
 65-6 
 
 2 1 3-5 
 
 + 2I-0 
 
 60 
 
 264 
 
 267 nf 
 
 
 348 
 
 o'3o2 
 
 321-6 
 
 lSg-2 
 
 -f-20'4 
 
 2 
 
 6 
 
 
 
 346 
 
 0-705 
 
 125-4 
 
 2i6-5 
 
 -18-8 
 
 i5 
 
 66 
 
 
 
 348 
 
 o-3o5 
 
 338-0 
 
 184-8 
 
 4-23-1 
 
 6 
 
 21 
 
 
 
 046 
 
 0-726 
 
 124-7 
 
 214-7 
 
 19'3 
 
 2 
 
 24 
 
 
 
 348 
 
 o-3oo 
 
 342-0 
 
 183-5 
 
 4-23-4 
 
 4 
 
 i3 
 
 
 
 
 o'gi6 
 
 70-7 
 
 
 
 
 
 5ig 
 
 Aug. 1 8* 
 
 
 
 
 
 
 (204) 
 
 (969) 
 
 (1001) 
 
 Aug. 12 
 
 
 
 
 
 
 (320) 
 
 (i388) 
 
 (2568) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 23 1 -008 
 
 343 
 
 0-957 
 
 294-7 
 
 235-2 
 
 4-25-6 
 
 3 4 
 
 1 33 
 
 972/ 
 
 224-988 
 
 3 4 2 
 
 '994 
 
 281-6 
 
 325-3 
 
 + 12-2 
 
 o 
 
 279 
 
 634 nf 
 
 
 3 4 4 
 
 o-g35 
 
 249-8 
 
 226-7 
 
 -16-1 
 
 i3 
 
 69 
 
 "44/ 
 
 
 3 4 3 
 
 0-326 
 
 177 
 
 234-3 
 
 + 24-6 
 
 106 
 
 36 4 
 
 
 
 345 
 
 0-779 
 
 2g3'3 
 
 211-5 
 
 + 22-4 
 
 33 
 
 203 
 
 
 
 344 
 
 0-464 
 
 147-3 
 
 225-4 
 
 i 6-5 
 
 27 
 
 129 
 
 
 
 346 
 
 o-85o 
 
 244-2 
 
 214-2 
 
 -17-6 
 
 
 
 22 
 
 58g c 
 
 
 345 
 
 o-5oi 
 
 58-8 
 
 213-3 
 
 + 2TO 
 
 46 
 
 211 
 
 
 
 346 
 
 0-834 
 
 243-1 
 
 2I2'2 
 
 -17-9 
 
 
 
 52 
 
 
 
 3 4 6 
 
 0-064 
 
 140-7 
 
 218-3 
 
 ig-6 
 
 o 
 
 7 
 
 
 
 346 
 
 0-8 1 g 
 
 240-7 
 
 209-9 
 
 ig-i 
 
 o 
 
 25 
 
 
 
 346 
 
 0-574 
 
 1 37-4 
 
 216-4 
 
 i8-g 
 
 21 
 
 122 
 
 
 
 346 
 
 0-808 
 
 23g-2 
 
 208-3 
 
 19-7 
 
 o 
 
 i5 
 
 
 
 346 
 
 0-617 
 
 1 36- 1 
 
 213-5 
 
 20-4 
 
 I 
 
 4 
 
 
 
 3 4 6 
 
 0-788 
 
 236-6 
 
 2o5-5 
 
 20-8 
 
 10 
 
 33 
 
 
 
 346 
 
 0-6 1 3 
 
 i32-5 
 
 2I2'2 
 
 i 8-6 
 
 5 
 
 12 
 
 
 
 348 
 
 o-53o 
 
 3o3 - o 
 
 189-0 
 
 + 22-8 
 
 56 
 
 3i6 
 
 
 
 3 4 6 
 
 0-649 
 
 1 33-g 
 
 210-6 
 
 20-9 
 
 6 
 
 20 
 
 
 
 348 
 
 0-490 
 
 3og-3 
 
 184-8 
 
 +24-3 
 
 9 
 
 28 
 
 
 
 
 0-862 
 
 68-5 
 
 
 
 
 
 63o 
 
 
 348 
 
 0-467 
 
 3o8-o 
 
 183-8 
 
 + 23-0 
 
 6 
 
 27 
 
 
 
 
 0-9 ii 
 
 I23'2 
 
 
 
 
 
 680 
 
 
 348 
 
 0-447 
 
 304-9 
 
 183-4 
 
 -f-21'2 
 
 o 
 
 5 
 
 
 Aug. 1 3 
 
 
 
 
 
 
 (212) 
 
 (II 4 8) 
 
 0944) 
 
 Aug. 19 
 
 348 
 
 0-448 
 
 309-4 
 
 I82-3 
 
 4-22-g 
 
 i5 
 
 (-76) 
 
 76 
 
 (i625) 
 
 (i 7 o5) 
 
 227-618 
 
 3 4 y 
 347 
 343 
 344 
 
 0-707 
 0-721 
 0-548 
 o-5og 
 
 291-9 
 294-2 
 
 3o6-3 
 
 220-9 
 
 254-4 
 
 25o-8 
 234-8 
 226-0 
 
 4-20-9 
 
 + 22'O 
 + 24-9 
 -1 6-2 
 
 10 
 
 
 43 
 
 '9 
 
 4 3 
 42 
 290 
 9 1 
 
 
 231-718 
 
 343 
 3 44 
 3 4 6 
 
 0-987 
 0-984 
 o-gog 
 
 2 9 4'3 
 25i-6 
 246-8 
 
 234-2 
 228-4 
 212-7 
 
 + 25-0 
 
 -16-6 
 
 -17-7 
 
 25 
 25 
 
 
 107 
 
 101 
 
 i5 
 
 676 n f\ 
 242 c 1 
 6n c 1 
 
 
 345 
 
 0-280 
 
 335-2 
 
 21 3-0 
 
 + 21-4 
 
 29 
 
 176 
 
 
 
 346 
 
 0-894 
 
 244-2 
 
 209-9 
 
 1 9-3 
 
 5 
 
 21 
 
 
 
 3 4 6 
 346 
 
 0-453 
 0-432 
 
 203-4 
 200-7 
 
 216-7 
 
 2 1 5'0 
 
 -I 7 -8 
 17-1 
 
 18 
 
 g 
 
 9 
 5i 
 
 
 
 345 
 048 
 
 0-867 
 o-65g 
 
 2gr3 
 2g6-5 
 
 211-9 
 191-1 
 
 4-21-9 
 
 4-22-5 
 
 43 
 67 
 
 217 
 36 7 
 
 
 Aug.i6f 
 
 T 
 
 346 
 3 4 6 
 346 
 3 4 6 
 
 T 
 
 0-45 1 
 0-443 
 0-465 
 0-467 
 
 '99' 1 
 i8g-5 
 187-1 
 183-3 
 
 214-7 
 
 2IO'2 
 
 2og'3 
 
 207-4 
 
 18-4 
 
 19-0 
 
 20'6 
 
 20-9 
 
 o 
 o 
 
 
 
 i3 
 
 (nO 
 
 ii 
 26 
 35 
 
 39 
 
 (894) 
 
 
 
 3 4 8 
 348 
 348 
 3 4 8 
 348 
 
 0-635 
 0-618 
 
 o'5g3 
 o-588 
 0-562 
 o-g83 
 
 3oi-o 
 297-3 
 3ori 
 298-8 
 3ori 
 68-7 
 
 188-3 
 187-8 
 i85'i 
 i85-3 
 182-9 
 
 +247 
 
 + 22-1 
 + 23'7 
 + 22-3 
 + 22-8 
 
 2 
 
 5 
 10 
 
 12 
 
 20 
 
 7 
 
 12 
 
 5 7 
 48 
 ii i 
 
 218 
 
 
 
 
 
 
 
 
 
 
 Aug. 20* 
 
 
 
 
 
 
 (2I 9 ) 
 
 (io63) 
 
 ('747) 
 
 229-062 
 
 347 
 
 0-933 
 
 28g'5 
 
 256-4 
 
 + 20-6 
 
 3i 
 
 76 
 
 2l5/ 
 
 
 
 
 
 
 
 
 
 
 Aug. 17 
 
 3^3 
 3 44 
 340 
 346 
 
 0-764 
 0-719 
 0-486 
 o'5g3 
 
 297-6 
 23g'4 
 3o3-8 
 224-4 
 
 235-0 
 226-7 
 212-4 
 
 212-6 
 
 + 25-3 
 -16-2 
 4-21-8 
 i3'g 
 
 3g 
 
 32 
 
 44 
 47 
 (93) 
 
 217 
 1 06 
 
 203 
 
 227 
 
 (829) 
 
 764 c 
 272 s 
 
 (1251) 
 
 233-oo3 
 
 3 4 5 
 348 
 
 o'g66 
 o'82g 
 o-g66 
 0-842 
 
 245-0 
 23r8 
 291-4 
 292-5 
 
 2iro 
 191-8 
 
 -f-22'4 
 + 22'7 
 
 7 5 
 75 
 
 3o3 
 418 
 
 663 
 5 9 3 
 343 nf 
 553 c 
 
 * Indian photo. The Areas of Spots and Faculas are expressed in Millionths of the Sun's visible Hemisphere. t Melbourne photo. 
 
REDUCTION OF SOLAR PHOTOGRAPHS THROUGHOUT 1878-1881. 
 
 31 
 
 MKASI-KKS of POSITIONS and AREAS of SPOTS and FACDL/E upon the SUN'S DISK on PUOTOGKAPHS taken in the YEAK 1880 continued. 
 
 
 
 Dis- 
 
 
 Hi. I in.ii! iriiic 1 
 
 SPOTS. 
 
 FACUL.E. 
 
 
 
 Dis- 
 
 
 HELIOGHAPHIO 
 
 SPOTS. 
 
 FAOUL*. 
 
 
 No. of 
 
 tance 
 
 . 
 
 
 
 
 
 No. of 
 
 tance 
 
 
 
 
 
 Mean 
 Solar 
 Time. 
 
 Group 
 
 and 
 Letter 
 for 
 Spot. 
 
 from 
 (Ymiv 
 in 
 terms 
 of 
 Sun's 
 
 PoBtioi 
 
 Angle 
 from 
 
 Sun's 
 Axis. 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 r.MBK.V 
 for each 
 Spot 
 (and for 
 
 Area of 
 WHOLE 
 for each 
 Spot 
 (and for 
 
 Area for 
 each 
 Group 
 
 (and for 
 
 T1 , r \ 
 
 Mean 
 Solar 
 Time. 
 
 Group, 
 and 
 Letter 
 for 
 Spot. 
 
 from 
 Centre 
 in 
 terms 
 of 
 Sun's 
 
 Position 
 Angle 
 from 
 Sun's 
 Axis. 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBRA 
 for each 
 Spot 
 (and for 
 
 Area of 
 WHOLK 
 
 for each 
 Spot 
 (and for 
 
 Area for 
 each 
 Group 
 (and for 
 r\ _.\ 
 
 
 
 Radius 
 
 
 
 
 Day). 
 
 Day). 
 
 Day). 
 
 
 
 liailius 
 
 
 
 
 Day). 
 
 Day). 
 
 LJaj). 
 
 1880. 
 
 
 
 
 
 o 
 
 o 
 
 
 
 
 1880. 
 
 
 
 o 
 
 
 
 o 
 
 
 
 
 233 d -oo3 
 
 348 
 
 0-784 
 
 2g5'2 
 
 185-3 
 
 4-24-0 
 
 3 
 
 '4 
 
 
 243^04 
 
 
 0-962 
 
 246-0 
 
 
 
 
 
 IO2 
 
 
 348 
 
 0-785 
 
 294-4 
 
 182-7 
 
 4-22-g 
 
 25 
 
 I3 4 
 
 
 
 349 
 
 0-982 
 
 290-4 
 
 7''4 
 
 4-21-4 
 
 3l 
 
 181 
 
 525 C 
 
 
 348 
 
 0-757 
 
 
 182-5 
 
 + 24-4 
 
 
 
 IO 
 
 649 c 
 
 
 
 0-941 
 
 291-3 
 
 61-8 
 
 4-22-4 
 
 20 
 
 262 
 
 288 c 
 
 
 349 
 
 0-891 
 
 67-6 
 
 71-2 
 
 4-23-1 
 
 '9 
 
 36 
 
 447 */ 
 
 
 35 1 
 
 o-3g6 
 
 8i-5 
 
 327-3 
 
 4-10-0 
 
 >9 
 
 1 12 
 
 
 Aug. 2 i 
 
 
 
 
 
 
 (-97) 
 
 (9 1 5) 
 
 (3i 4 8) 
 
 Sept. i 
 
 
 
 
 
 
 (70) 
 
 (555) 
 
 ( 9 i5) 
 
 233-761 
 
 
 o-g82 
 
 242-6 
 
 
 
 
 
 "7 
 
 
 
 
 
 
 
 
 
 
 
 348 
 
 o-q25 
 
 291-1 
 
 ig3-i 
 
 4-22-2 
 
 86 
 
 439 
 
 
 
 
 
 
 
 
 
 
 
 
 348 
 
 0-874 
 
 292-6 
 
 185-7 
 
 4-23-2 
 
 
 
 5o 
 
 
 245-017 
 
 349 
 
 o-993 
 
 293-2 
 
 6i-3 
 
 4-23-8 
 
 o 
 
 218 
 
 175 c 
 
 
 348 
 
 0-862 
 
 291-2 
 
 184-3 
 
 4-21-8 
 
 4 
 
 56 
 
 
 
 352 
 
 0-872 
 
 25o-o 
 
 33-i 
 
 i 3-3 
 
 o 
 
 24 
 
 
 
 348 
 
 0-846 
 
 292-3 
 
 182-3 
 
 4-22-5 
 
 '4 
 
 "9 
 
 63ic 
 
 
 352 
 
 0-854 
 
 25o-5 
 
 3l'2 
 
 12-5 
 
 o 
 
 '4 
 
 
 Aug. 22* 
 
 
 
 
 
 
 ('04) 
 
 (664) 
 
 (748) 
 
 
 352 
 
 0-823 
 
 249-1 
 
 27-7 
 
 -12-7 
 
 1 1 
 
 3i 
 
 218 c 
 
 
 
 
 
 
 
 
 
 
 
 35 1 
 
 o-i58 
 
 69-2 
 
 327-3 
 
 4- 10-4 
 
 28 
 
 u3 
 
 
 234-705 
 
 
 0-940 
 
 233-9 
 
 
 
 
 
 226 
 
 
 353 
 
 0-969 
 
 7 2-5 
 
 258-g 
 
 4-187 
 
 o 
 
 34 
 
 n3/ 
 
 
 348 
 
 0-979 
 
 291-6 
 
 192-0 
 
 4-22-5 
 
 79 
 
 53 1 
 
 
 Sept. 2 
 
 
 
 
 
 
 (3q) 
 
 (434) 
 
 (5o6) 
 
 
 3 4 8 
 
 0-947 
 
 2go-g 
 
 184-4 
 
 4-22-0 
 
 i3 
 
 67 
 
 
 
 
 
 
 
 
 
 
 
 
 348 
 
 o-g3z 
 
 2go - 7 
 
 181-8 
 
 4- 2 1 -9 
 
 20 
 
 82 
 
 
 
 
 
 
 
 
 
 
 
 
 348 
 
 o-g20 
 
 287-3 
 
 '79-8 
 
 4-18-6 
 
 10 
 
 62 
 
 
 
 
 
 
 
 
 
 
 
 
 3 4 8 
 
 o-go8 
 
 289-0 
 
 '777 
 
 4- 20- 2 
 
 '7 
 
 58 
 
 
 246-o5g 
 
 
 o-g38 
 
 221-8 
 
 
 
 
 
 186 
 
 
 348 
 
 0-892 
 
 287-8 
 
 175-8 
 
 4-ig'o 
 
 9 
 
 21 
 
 8340 
 
 
 
 0-923 
 
 296-5 
 
 
 
 
 
 70 
 
 
 349 
 
 0-702 
 
 65-5 
 
 68-7 
 
 4-22-0 
 
 9 
 
 28 
 
 
 
 
 o-8o3 
 
 240-3 
 
 
 
 
 
 211 
 
 
 349 
 
 0-728 
 
 65-4 
 
 66-5 
 
 4-22-5 
 
 3 
 
 18 
 
 
 
 352 
 
 0-927 
 
 253-6 
 
 27-4 
 
 12-2 
 
 o 
 
 16 
 
 3i5/> 
 
 Aug. 23* 
 
 
 
 
 
 
 (i 60) 
 
 (867) 
 
 (1060) 
 
 
 35 1 
 
 o'io5 
 
 3oo-8 
 
 327-4 
 
 4-10-3 
 
 21 
 
 10,") 
 
 
 
 
 
 
 
 
 
 
 
 
 353 
 
 0-890 
 
 72-9 
 
 258-6 
 
 4-18-5 
 
 IO 
 
 21 
 
 5n/ 
 
 
 
 
 
 
 
 
 
 
 Sept. 3 
 
 
 
 
 
 
 (3i) 
 
 (I 4 2) 
 
 (|2 9 3) 
 
 235-716 
 
 348 
 
 0-988 
 
 2go-g 
 
 181-7 
 
 4-21-7 
 
 o 
 
 36 
 
 663 af 
 
 
 
 
 
 
 
 
 
 
 
 349 
 
 o-53 1 
 
 5 7 - 7 
 
 69-8 
 
 + 22-7 
 
 21 
 
 72 
 
 
 
 
 
 
 
 
 
 
 
 Aug. 24* 
 
 
 
 
 
 
 (21) 
 
 (108) 
 
 (663) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 246-902 
 
 
 0-984 
 
 255-7 
 
 
 
 
 
 196 
 
 240-006 
 
 
 o-8g3 
 
 304-2 
 
 
 
 
 
 1 63 
 
 
 
 0-898 
 
 214-8 
 
 
 
 
 
 184 
 
 
 349 
 
 0-497 
 
 3o3 o 
 
 68-7 
 
 4-22-1 
 
 O 
 
 8 
 
 
 
 
 0-877 
 
 244-5 
 
 
 
 
 
 269 
 
 
 3 49 
 
 0-457 
 
 3o5-6 
 
 65-6 
 
 4-22'O 
 
 O 
 
 '4 
 
 
 
 35 1 
 
 0-288 
 
 282-7 
 
 327-5 
 
 4-10-6 
 
 21 
 
 log 
 
 
 
 3oo 
 
 0*064 
 
 214-3 
 
 61-9 
 
 20-9 
 
 6 
 
 i3 
 
 
 
 353 
 
 0-792 
 
 72-1 
 
 258-5 
 
 4-18-6 
 
 8 
 
 16 
 
 io3/ 
 
 
 35o 
 
 0-027 
 
 2ir6 
 
 5g-o 
 
 -'97 
 
 IO 
 
 23 
 
 
 
 354 
 
 0-981 
 
 65-g 
 
 230'2 
 
 4-25-0 
 
 49 
 
 134 
 
 761 sp 
 
 
 35 1 
 35 1 
 
 o-g58 
 o-g65 
 
 80- 1 
 82-1 
 
 327-g 
 326-6 
 
 4-11-5 
 4- 9-5 
 
 o 
 49 
 
 9 
 1 80 
 
 204 n/ 
 
 Sept. 4 
 
 
 
 
 
 
 (78) 
 
 (25 9 ) 
 
 (i832) 
 
 
 
 0-923 
 
 147-0 
 
 
 
 
 
 164 
 
 
 
 
 
 
 
 
 
 
 
 
 o- 9 3 7 
 
 72-0 
 
 
 
 
 
 98 
 
 247-671 
 
 35 1 
 
 0-453 
 
 279-0 
 
 3277 
 
 4-10-5 
 
 22 
 
 IOI 
 
 
 
 
 0-902 
 
 1 1 5'o 
 
 
 
 
 
 '47 
 
 
 353 
 
 0-674 
 
 70-4 
 
 25g-i 
 
 4-18-4 
 
 5 
 
 16 
 
 
 
 Aug. 28 
 
 
 
 
 
 
 (65) 
 
 (247) 
 
 (776) 
 
 
 355 
 
 o'9i3 
 
 112-8 
 
 23g-2 
 
 -'7-3 
 
 3 
 
 i3 
 
 
 240-736 
 
 349 
 
 o-636 
 
 2 9 5-g 
 
 67-1 
 
 4-21-8 
 
 1 1 
 
 47 
 
 
 
 355 
 355 
 
 0-924 
 0-948 
 
 I I2'6 
 I I2'0 
 
 237-4 
 233-3 
 
 -'77 
 18-2 
 
 7 
 '4 
 
 26 
 48 
 
 403 c 
 
 
 349 
 
 0-574 
 
 2g8-2 
 
 65-i 
 
 4-21-8 
 
 16 
 
 62 
 
 
 
 354 
 
 o-g36 
 
 66-2 
 
 230-4 
 
 4-24-8 
 
 40 
 
 148 
 
 641 c 
 
 
 35 1 
 
 o-go5 
 
 82-6 
 
 326-8 
 
 4- 97 
 
 '7 
 
 90 
 
 
 
 356 
 
 0-972 
 
 66-8 
 
 222-7 
 
 4-24-2 
 
 22 
 
 102 
 
 
 Aug. 29* 
 
 
 
 
 
 
 (44) 
 
 ('97) 
 
 
 Sept. 5* 
 
 
 
 
 
 
 (i 1 3) 
 
 (454) 
 
 (1044) 
 
 241-785 
 
 349 
 
 0-784 
 
 2gr6 
 
 69-9 
 
 4-21-4 
 
 35 
 
 1 7 3 
 
 
 
 
 
 
 
 
 
 
 
 
 349 
 35 1 
 
 0-720 
 0778 
 
 2g.V5 
 82-9 
 
 63-7 
 327-2 
 
 4-21-8 
 4-io-Q 
 
 37 
 24 
 
 i 7 5 
 
 IOO 
 
 
 248-781 
 
 35 1 
 353 
 
 o'65g 
 o-477 
 
 277-6 
 64-7 
 
 327-7 
 25g-3 
 
 + io-5 
 4-18-3 
 
 24 
 4 
 
 IOO 
 
 18 
 
 
 Aug. 3o* 
 
 
 
 
 
 
 (96) 
 
 (448) 
 
 
 
 355 
 
 0-786 
 
 119-5 
 
 240-5 
 
 -'77 
 
 16 
 
 6q 
 
 
 
 
 
 
 
 
 
 
 
 
 355 
 
 0-809 
 
 117-1 
 
 237-5 
 
 i6-g 
 
 
 
 16 
 
 
 24.3-016 
 
 
 0'8g2 
 
 242-8 
 
 
 
 
 
 76 
 
 
 355 
 
 0-8 n 
 
 ii8-5 
 
 237-8 
 
 i 8-0 
 
 3 
 
 9 
 
 
 
 349 O'g22 
 
 290-3 
 
 70-4 
 
 4-21-5 
 
 3i 
 
 23 4 
 
 g56 c 
 
 
 355 
 
 o-83o 
 
 118-2 
 
 236-g 
 
 i 8- 1 
 
 2 
 
 8 
 
 
 
 34g O-865 
 
 291-5 
 
 62-4 
 
 4-22-2 
 
 43 
 
 280 
 
 
 
 355 
 
 o-85 1 
 
 116-9 
 
 233-3 
 
 i 8-3 
 
 38 
 
 173 
 
 588 / 
 
 
 35 1 
 
 0-073 
 
 82-7 
 
 327-2 
 
 4- 1 o-i 
 
 33 
 
 1 55 
 
 
 
 354 
 
 o-83i 
 
 64-4 
 
 23o-5 
 
 4-25-2 
 
 3i 
 
 1 63 
 
 327 c 
 
 Aug. 3 1 
 
 
 0-766 
 
 6g-5 
 
 
 
 (107) 
 
 (669) 
 
 464 
 (1496) 
 
 Sept. 6* 
 
 356 
 
 O'Sgo 
 
 66-4 
 
 222-g 
 
 4-24-3 
 
 9 
 
 49 
 
 I52/ 
 
 * Indian photo. The Areas of Spots and Faculac are expressed in Millionths of the Sun's risible Hemisphere. 
 
32 
 
 REDUCTION OF SOLAR PHOTOGRAPHS THROUGHOUT 1878-1881. 
 
 MEASURES of POSITIONS and AREAS of Srois and FACUL^E upon the SUN'S DISK on PHOTOGRAPHS taken in the YEAR 1880 continued. 
 
 
 
 Dis- 
 
 
 HELIOGKAFIIIC 
 
 SPOTS. 
 
 FAOIIL*. 
 
 
 
 Dis- 
 
 
 HELIOOKAFIIIC 
 
 SPOTS. 
 
 FACUL.*:. 
 
 
 No. of 
 
 tance 
 
 . 
 
 
 
 
 
 No. of 
 
 tance 
 from 
 
 . . 
 
 
 
 
 Mean 
 Solar 
 Time. 
 
 Jroup, 
 and 
 Letter 
 for 
 Spot. 
 
 from 
 Centre 
 in 
 terms 
 of 
 Sun's 
 Radius. 
 
 Position 
 Angle 
 from 
 Sun's 
 Axis. 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBRA 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 WHOLE 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 Mean 
 Solar 
 Time. 
 
 Group, 
 and 
 Letter 
 for 
 Spot. 
 
 Centre 
 in 
 terms 
 of 
 Sun's 
 Radius. 
 
 1 osition 
 Angle 
 from 
 Sun's 
 Axis. 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBRA 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 WHOLE 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 1880. 
 
 
 
 o 
 
 
 
 o 
 
 
 
 
 1880. 
 
 
 
 o 
 
 o 
 
 o 
 
 
 
 
 25o d -o83 
 
 
 O'g3g 
 
 2 go- 5 
 
 
 
 
 
 5 4 
 
 2 53 d - 100 
 
 
 0-917 
 
 280-2 
 
 
 
 
 
 64 
 
 
 
 o-8g7 
 
 245-8 
 
 
 
 
 
 247 
 
 
 355 
 
 0-481 
 
 210-6 
 
 244-0 
 
 -17-4 
 
 94 
 
 338 
 
 
 
 35 1 
 
 0-848 
 
 278-1 
 
 327-5 
 
 + I0'7 
 
 18 
 
 io5 
 
 241 / 
 
 
 355 
 
 0-450 
 
 206-6 
 
 241-2 
 
 16-6 
 
 10 
 
 33 
 
 
 
 35 4 
 
 0-662 
 
 5g-6 
 
 23o-o 
 
 + 25-2 
 
 32 
 
 117 
 
 I ig c 
 
 
 355 
 
 0-453 
 
 203-4 
 
 240-0 
 
 -17-4 
 
 8 
 
 '9 
 
 
 
 355 
 
 0-586 
 
 134-2 
 
 243-0 
 
 -l 7 -6 
 
 23 
 
 68 
 
 
 
 355 
 
 0-460 
 
 202-2 
 
 23 9 - 7 
 
 -i 8-0 
 
 o 
 
 8 
 
 
 
 355 
 
 o-623 
 
 i3ri 
 
 23g-6 
 
 -I 7 -8 
 
 10 
 
 5i 
 
 
 
 355 
 
 0-466 
 
 199-4 
 
 238-5 
 
 -1 8-8 
 
 4 
 
 6 
 
 
 
 355 
 
 o'6g3 
 
 126-4 
 
 233-1 
 
 18-4 
 
 16 
 
 IOO 
 
 33g c 
 
 
 355 
 
 0-447 
 
 ig8-6 
 
 207-6 
 
 -17-8 
 
 5 
 
 3o 
 
 
 
 356 
 
 0-740 
 
 64-1 
 
 222-5 
 
 + 23-g 
 
 6 
 
 ig 
 
 1 14 c 
 
 
 355 
 
 0-424 
 
 197-8 
 
 236-g 
 
 -i 6-5 
 
 7 
 
 42 
 
 
 
 357 
 
 0-867 
 
 1 1 5-4 
 
 2i3-g 
 
 17-7 
 
 9 
 
 25 
 
 7 9 3c 
 
 
 355 
 
 0-427 
 
 193-3 
 
 235-1 
 
 -i 7 -3 
 
 53 
 
 1 53 
 
 
 
 358 
 
 0-880 
 
 67-8 
 
 207-0 
 
 t-23-o 
 
 i3 
 
 3i 
 
 266 nf 
 
 
 355 
 
 0-456 
 
 188-6 
 
 233-3 
 
 -9-5 
 
 2 
 
 >4 
 
 
 
 35g 
 
 0-973 
 
 68-6 
 
 igo'8 
 
 + 22-4 
 
 5o 
 
 216 
 
 241 sp 
 
 
 355 
 
 0-439 
 
 187-2 
 
 232-5 
 
 18-5 
 
 II 
 
 3i 
 
 
 Sept. 7 
 
 
 
 
 
 
 (177) 
 
 (732) 
 
 (2414) 
 
 
 357 
 
 0-414 
 
 172-9 
 
 226-1 
 
 i6-g 
 
 3 
 
 i5 
 
 
 
 
 
 
 
 
 
 
 
 
 357 
 
 0-405 
 
 169-9 
 
 224-9 
 
 16-2 
 
 80 
 
 25g 
 
 
 
 
 
 
 
 
 
 
 
 
 357 
 
 0-441 
 
 1 60- 8 
 
 220-4 
 
 -17-4 
 
 9 
 
 54 
 
 
 
 
 
 
 
 
 
 
 
 
 357 
 
 0-410 
 
 iSg-8 
 
 220-8 
 
 i 5-4 
 
 2 
 
 i3 
 
 
 25o - g8o 
 
 35 1 
 
 0-937 
 
 277-7 
 
 327-4 
 
 + 97 
 
 32 
 
 1 10 
 
 28gn/ 
 
 
 35~ 
 
 0-395 
 
 i58'7 
 
 220-7 
 
 -14-3 
 
 9 
 
 53 
 
 
 
 35 4 
 
 o'Sog 
 
 5i- 4 
 
 23r3 
 
 + 25-0 
 
 37 
 
 i3o 
 
 
 
 357 
 
 0-428 
 
 i58-g 
 
 220-0 
 
 -i 6-3 
 
 3 
 
 21 
 
 
 
 355 
 
 0-474 
 
 i5o-g 
 
 243-3 
 
 17-4 
 
 29 
 
 n3 
 
 
 
 357 
 
 0-453 
 
 156-5 
 
 218-3 
 
 -i 7 -3 
 
 22 
 
 70 
 
 
 
 355 
 
 0-470 
 
 146-8 
 
 241-7 
 
 -16-1 
 
 o 
 
 17 
 
 
 
 357 
 
 0-417 
 
 i55-g 
 
 219-0 
 
 -I 5-2 
 
 15 
 
 43 
 
 
 
 355 
 
 0-495 
 
 '47'4 
 
 241-0 
 
 -17-7 
 
 16 
 
 77 
 
 
 
 35 7 
 
 0-422 
 
 1 52 -3 
 
 2I7-5 
 
 14-8 
 
 4 
 
 '4 
 
 
 
 355 
 
 o-5 17 
 
 146-4 
 
 23g'7 
 
 -i 8-6 
 
 2 
 
 5 
 
 
 
 35 7 
 
 0-458 
 
 I 54- 2 
 
 2I7-2 
 
 -17-2 
 
 
 
 ii 
 
 
 
 355 
 
 o'Szg 
 
 141-6 
 
 237-1 
 
 -17-7 
 
 O 
 
 5 
 
 
 
 357 
 
 0-464 
 
 1 53'2 
 
 2l6'5 
 
 -17-3 
 
 o 
 
 7 
 
 
 
 355 
 
 0-572 
 
 1377 
 
 233-4 
 
 18-4 
 
 17 
 
 89 
 
 
 
 357 
 
 0-447 
 
 l52'I 
 
 216-6 
 
 16-1 
 
 i3 
 
 58 
 
 
 
 355 
 
 O-585 
 
 
 232-1 
 
 i 8-5 
 
 23 
 
 7 5 
 
 
 
 357 
 
 0-476 
 
 i5o"4 
 
 2l5'O 
 
 -17-3 
 
 ii 
 
 24 
 
 
 
 307 
 
 0-681 
 
 I22'I 
 
 220-6 
 
 i 5-4 
 
 3 
 
 '4 
 
 
 
 357 
 
 0-482 
 
 148-8 
 
 214-0 
 
 -17-3 
 
 i5 
 
 52 
 
 
 
 357 
 
 o-6g8 
 
 121-6 
 
 2ig-2 
 
 -i5-8 
 
 5 
 
 
 
 
 354 
 
 0-335 
 
 353-3 
 
 231-7 
 
 + 26-6 
 
 3 
 
 16 
 
 
 
 357 
 
 0-704 
 
 123-6 
 
 2ig-5 
 
 -17-2 
 
 6 
 
 16 
 
 
 
 354 
 
 o-3o8 
 
 356-6 
 
 23o-3 
 
 + 25-1 
 
 20 
 
 76 
 
 
 
 357 
 
 0-710 
 
 Iig-3 
 
 2I7-5 
 
 14-8 
 
 i3 
 
 35 
 
 
 
 356 
 
 0-256 
 
 4-5 
 
 227-9 
 
 4-22-0 
 
 
 
 4 
 
 
 
 3:i 7 
 
 0-716 
 
 121*2 
 
 217-7 
 
 -16-2 
 
 8 
 
 28 
 
 
 
 356 
 
 0-286 
 
 1 5-o 
 
 224-6 
 
 -r-23-2 
 
 O 
 
 4 
 
 
 
 357 
 
 0-746 
 
 120-2 
 
 2l5'0 
 
 -167 
 
 23 
 
 io3 
 
 
 
 356 
 
 o-3oi 
 
 19-4 
 
 222-9 
 
 + 23'6 
 
 
 
 3 
 
 
 
 357 
 
 0-770 
 
 120-2 
 
 2 1 3-0 
 
 17-7 
 
 3 
 
 10 
 
 
 
 358 
 
 0-456 
 
 5o-8 
 
 206-6 
 
 4-23-4 
 
 5 
 
 i3 
 
 
 
 358 
 
 0-776 
 
 65-g 
 
 207-0 
 
 + 23-2 
 
 i3 
 
 40 
 
 
 
 35g 
 
 0-647 
 
 63-8 
 
 igo-5 
 
 + 22'2 
 
 67 
 
 218 
 
 
 
 35g 
 
 0-912 
 
 68-0 
 
 190-7 
 
 + 23-0 
 
 83 
 
 3ig 
 
 
 
 35g 
 
 0-702 
 
 70-8 
 
 i85-g 
 
 + 18-6 
 
 *4 
 
 47 
 
 
 
 35g 
 
 o-gSo 
 
 72-4 
 
 184-2 
 
 + ig-o 
 
 26 
 
 74 
 
 
 
 35g 
 
 0-771 
 
 68-9 
 
 I79-' 
 
 + 20-8 
 
 
 
 10 
 
 5g5/ 
 
 Sept. 8* 
 
 
 
 
 
 
 (33 9 ) 
 
 (1284) 
 
 (28g) 
 
 Sept. 10 
 
 
 0-865 
 
 127-3 
 
 
 
 (499) 
 
 (75g) 
 
 553 
 
 (1212) 
 
 25rgi8 
 
 355 
 
 0-421 
 
 1787 
 
 244-2 
 
 -17-6 
 
 42 
 
 206 
 
 
 
 
 
 
 
 
 
 
 
 
 355 
 
 0-426 
 
 I73-5 
 
 241-9 
 
 17-7 
 
 i5 
 
 43 
 
 
 
 
 
 
 
 
 
 
 
 
 355 
 
 0-445 
 
 1 63-5 
 
 237-2 
 
 -18-1 
 
 6 
 
 23 
 
 
 253-766 
 
 355 
 
 o-563 
 
 222-9 
 
 2 4 3-g 
 
 -177 
 
 123 
 
 480 
 
 
 
 355 
 
 0-441 
 
 160-6 
 
 236-0 
 
 17-4 
 
 14 
 
 5 4 
 
 
 
 355 
 
 0-536 
 
 221-3 
 
 241-9 
 
 -17-0 
 
 12 
 
 46 
 
 
 
 355 
 
 0-476 
 
 i56-i 
 
 233-1 
 
 -187 
 
 25 
 
 
 
 
 355 
 
 0-529 
 
 2ig-o 
 
 240-6 
 
 -17-4 
 
 O 
 
 6 
 
 
 
 357 
 
 0-528 
 
 137-4 
 
 223-1 
 
 -i 6- 1 
 
 2$ 
 
 98 
 
 
 
 355 
 
 0-525 
 
 217-5 
 
 23g-8 
 
 -17-8 
 
 H 
 
 37 
 
 
 
 357 
 
 0-546 
 
 l32'O 
 
 220-6 
 
 -14-8 
 
 '9 
 
 82 
 
 
 
 355 
 
 0-536 
 
 2 1 5'9 
 
 23q"6 
 
 i8-g 
 
 2 
 
 9 
 
 
 
 357 
 
 0-572 
 
 i35'7 
 
 220'I 
 
 -17-6 
 
 5 
 
 19 
 
 
 
 355 
 
 0-526 
 
 212-4 
 
 237-6 
 
 I 9'4 
 
 2 
 
 8 
 
 
 
 357 
 
 Q'582 
 
 l33'5 
 
 218-7 
 
 17-1 
 
 20 
 
 7 5 
 
 
 
 355 
 
 o-5 1 5 
 
 214-8 
 
 238-3 
 
 18-1 
 
 O 
 
 9 
 
 
 
 357 
 
 o-585 
 
 i3ri 
 
 217-6 
 
 -16-2 
 
 12 
 
 48 
 
 
 
 355 
 
 0-504 
 
 2l3'l 
 
 237-1 
 
 1 8-0 
 
 8 
 
 4 5 
 
 
 
 t 
 357 
 
 O'OQO 
 
 129-4 
 
 216-7 
 
 -i 5-6 
 
 3 
 
 20 
 
 
 
 355 
 
 0-489 
 
 212-7 
 
 236-4 
 
 -17-3 
 
 5 
 
 ii 
 
 
 
 357 
 
 ":; 
 
 0-6 1 8 
 
 I2g-g 
 
 2l5'2 
 
 17-1 
 
 27 
 
 i3i 
 
 
 
 355 
 
 0-487 
 
 214-6 
 
 237-0 
 
 16-6 
 
 i3 
 
 46 
 
 
 
 / 
 
 354 
 
 0-387 
 
 35-3 
 
 23o'5 
 
 + 25-4 
 
 3i 
 
 i3 7 
 
 
 
 355 
 
 0-478 
 
 210-2 
 
 234-9 
 
 -17-4 
 
 35 
 
 164 
 
 
 
 35g<z 
 
 O'I2O 
 
 326-7 
 
 248-7 
 
 
 3 
 
 i3 
 
 
 
 355 
 
 o-5og 
 
 208-3 
 
 235-1 
 
 ig-6 
 
 
 
 10 
 
 
 
 35gtf 
 358 
 
 o'ogS 
 0-636 
 
 327-6 
 61-7 
 
 2 47 '9 
 207-4 
 
 + I2'0 
 
 + 23-3 
 
 6 
 
 7 
 
 20 
 21 
 
 
 
 355 
 355 
 
 o-5oo 
 0-483 
 
 204-7 
 204-6 
 
 233-1 
 232-5 
 
 '9'9 
 i8-g 
 
 7 
 18 
 
 18 
 40 
 
 
 
 358 
 
 0684 
 
 61-8 
 
 20.36 
 
 +24-3 
 
 o 
 
 11 
 
 
 
 357 
 
 0-422 
 
 I94-3 
 
 226-5 
 
 i6-g 
 
 69 
 
 235 
 
 
 
 35q 
 
 0-8 10 
 
 67-2 
 
 igro 
 
 + 22-6 
 
 78 
 
 269 
 
 
 
 357 
 
 0*405 
 
 i go- 1 
 
 224-5 
 
 16-2 
 
 '7 
 
 60 
 
 
 
 35o 
 
 0-858 
 
 72-5 
 
 185-3 
 
 + I8'7 
 
 16 
 
 5 7 
 
 
 
 35 7 
 
 0-425 
 
 188-0 
 
 224-1 
 
 17-5 
 
 4 
 
 i5 
 
 
 Sept. g* 
 
 
 
 
 
 
 (35 4 ) 
 
 (H58) 
 
 
 
 357 
 
 o-38g 
 
 189-0) 223-g 
 
 15-3 
 
 IS 
 
 37 
 
 
 * Indian photo. The Areas of Spots and Facute are expressed in Millionths of the Sun's visible Hemisphere. 
 
REDUCTION OF SOLAR PHOTOGRAPHS THROUGHOUT 1878-1881. 
 
 33 
 
 MKASIKI.S of i'osrnoxs and AUKAS of Si-ors and FACUL^K upou the SUN'S DISK on PHOTOGKAPIIS taken in the YEAK 1880 continued. 
 
 
 
 Di 
 
 
 III.! loi.K.vrilli' 
 
 SPOTS. 
 
 FACCL*. 
 
 
 
 Dis- 
 
 
 HELIOORAI-HIO 
 
 SPOTS. 
 
 I'v l I i . 
 
 
 No. of 
 
 tance 
 
 
 
 
 
 
 
 No. of 
 
 tance 
 
 i> 
 
 
 
 
 
 Mean 
 
 Solar 
 Timi'. 
 
 Group, 
 
 and 
 Letter 
 for 
 
 SjlOt. 
 
 Iroin 
 in 
 
 tiTHIS 
 
 of 
 Sun's 
 
 Iviulius. 
 
 .Position 
 
 Angle 
 
 from 
 
 Bon'i 
 
 Axis. 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBRA 
 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 WHOLE 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 Mean 
 Solar 
 Time. 
 
 Group, 
 and 
 Letter 
 for 
 Spot. 
 
 from 
 0'eutre 
 in 
 terms 
 of 
 Sun's 
 iadius. 
 
 Position 
 Angle 
 from 
 Sun's 
 Axis. 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBRA 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 WHOLE 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 l88o. 
 
 
 
 o 
 
 
 
 o 
 
 
 
 . 
 
 1880. 
 
 
 
 o 
 
 o 
 
 o 
 
 
 
 
 253< ] 766 
 
 35; 
 
 0-418 
 
 184-3 
 
 222-2 
 
 -I 7 -3 
 
 2 
 
 13 
 
 
 256 d -io8 
 
 357 
 
 0'6oo 
 
 23 1-4 
 
 218-4 
 
 -i5 7 
 
 18 
 
 ig3 
 
 
 , 357 
 
 0-407 
 
 181-6 
 
 221-0 
 
 -16-6 
 
 3 
 
 l5 
 
 
 
 35 7 
 
 0-592 
 
 227-1 
 
 2 1 6-3 
 
 -i 7 -3 
 
 5 4 
 
 256 
 
 
 
 35; 
 
 0-404 
 
 179-5 
 
 220-1 
 
 16-4 
 
 16 
 
 3 9 
 
 
 
 357 
 
 0-567 
 
 229-6 
 
 2i5-g 
 
 -i5-i 
 
 8 
 
 36 
 
 
 
 35 7 
 
 0-376 
 
 181-4 
 
 220'7 
 
 -14-8 
 
 23 
 
 1 54 
 
 
 
 357 
 
 O-563 
 
 227-4 
 
 214-8 
 
 i 5-8 
 
 3 
 
 '9 
 
 
 
 35 7 
 
 0-423 
 
 174-1 
 
 2177 
 
 -17-6 
 
 25 
 
 125 
 
 
 
 357 
 
 0-568 
 
 223-9 
 
 21 3-7 
 
 -17-6 
 
 8 
 
 44 
 
 
 
 357 
 
 0-401 
 
 171-8 
 
 2l6'9 
 
 -16-1 
 
 52 
 
 190 
 
 
 
 357 
 
 0-544 
 
 217-4 
 
 2og-8 
 
 i 8-8 
 
 o 
 
 3 
 
 
 
 357 
 
 0-441 
 
 167-0 
 
 2I4-5 
 
 -17-6 
 
 24 
 
 86 
 
 
 
 354 
 
 0-673 
 
 2997 
 
 229-6 
 
 + 25-1 
 
 
 
 20 
 
 
 
 35 7 
 
 0-439 
 
 164-7 
 
 2l3'2 
 
 -18-4 
 
 
 
 6 
 
 
 
 358 
 
 o-386 
 
 312-8 
 
 207-2 
 
 -t-22'O 
 
 
 
 7 
 
 
 
 304 
 
 0-378 
 
 334-5 
 
 23o-8 
 
 + 26-9 
 
 2 
 
 5 
 
 
 
 358 
 
 o-3g3 
 
 320-1 
 
 205-4 
 
 4-24-4 
 
 12 
 
 20 
 
 
 
 364 
 
 o-3 4 6 
 
 33 r5 
 
 2307 
 
 + 247 
 
 32 
 
 7i 
 
 
 
 35g 
 
 0-261 
 
 358-4 
 
 189-9 
 
 4-22-3 
 
 44 
 
 174 
 
 
 
 358 
 
 0-353 
 
 37-0 
 
 207-0 
 
 + 23-3 
 
 
 
 7 
 
 
 
 
 0*910 
 
 63-2 
 
 
 
 
 
 383 
 
 
 358 
 
 o-38 9 
 
 34-7 
 
 206-2 
 
 + 25-5 
 
 
 
 i3 
 
 
 Sept. i3 
 
 
 
 
 
 
 (484) 
 
 (2210) 
 
 ('292) 
 
 
 35g 
 
 0-534 
 
 58-g 
 
 190-8 
 
 + 22-3 
 
 67 
 
 209 
 
 
 
 
 
 
 
 
 
 
 
 
 35g 
 
 0-588 
 
 68-0 
 
 185-4 
 
 + 18-7 
 
 18 
 
 35 
 
 
 
 
 
 
 
 
 
 
 
 Sept. 1 1* 
 
 
 
 
 
 
 (607) 
 
 (2250) 
 
 
 256-748 
 
 355 
 
 o-go5 
 
 247-0 
 
 241-4 
 
 17-2 
 
 126 
 
 7 33 
 
 
 
 
 
 
 
 
 
 
 
 
 355 
 
 0-886 
 
 245-4 
 
 238-5 
 
 -17-8 
 
 ii 
 
 96 
 
 
 
 
 
 
 
 
 
 
 
 
 355 
 
 0-867 
 
 244-2 
 
 235-g 
 
 -18-1 
 
 20 
 
 63 
 
 
 254-821 
 
 355 
 
 0-697 
 
 235-2 
 
 243-3 
 
 -17-6 
 
 102 
 
 469 
 
 
 
 355 
 
 0-861 
 
 241-9 
 
 234-5 
 
 ig-8 
 
 O 
 
 10 
 
 
 
 355 
 
 0-707 
 
 232-0 
 
 242-7 
 
 20-0 
 
 o 
 
 I I 
 
 
 
 355 
 
 0-846 
 
 244-3 
 
 233-7 
 
 17-2 
 
 21 
 
 55 
 
 
 
 355 
 
 0-667 
 
 232-3 
 
 240-1 
 
 i 8-0 
 
 4 3 
 
 152 
 
 
 
 355 
 
 0-855 
 
 240-8 
 
 233-5 
 
 20-4 
 
 27 
 
 IOI 
 
 
 
 355 
 
 o'65o 
 
 228-0 
 
 237-4 
 
 ig-3 
 
 16 
 
 64 
 
 
 
 35 7 
 
 0-778 
 
 240-9 
 
 226-1 
 
 -17-2 
 
 122 
 
 5i5 
 
 
 
 355 
 
 o-63i 
 
 229-7 
 
 236-8 
 
 -17-9 
 
 12 
 
 41 
 
 
 
 35 7 
 
 0-762 
 
 240-1 
 
 224-5 
 
 -17-2 
 
 O 
 
 7 
 
 
 
 35t 
 
 0-636 
 
 226-4 
 
 235'7 
 
 -'97 
 
 18 
 
 70 
 
 
 
 35 7 
 
 0717 
 
 23g-7 
 
 220-8 
 
 10-7 
 
 20 
 
 84 
 
 
 
 355 
 
 0-604 
 
 227-9 
 
 234-4 
 
 -i 7 -5 
 
 40 
 
 1 37 
 
 
 
 35 7 
 
 o- 7 25 
 
 235'g 
 
 220-0 
 
 -18-4 
 
 O 
 
 24 
 
 
 
 355 
 
 0-096 
 
 223-4 
 
 232-1 
 
 -19-1 
 
 5 
 
 18 
 
 
 
 35 7 
 
 0-691 
 
 237-0 
 
 217-g 
 
 -i 6-3 
 
 i3 
 
 56 
 
 
 
 357 
 
 0-017 
 
 219-4 
 
 226-5 
 
 -16-8 
 
 i>9 
 
 4 53 
 
 
 
 35 7 
 
 0-6 7 8 
 
 236-5 
 
 216-8 
 
 16-2 
 
 18 
 
 58 
 
 
 
 357 
 
 0-474 
 
 214-9 
 
 222-8 
 
 1 5-9 
 
 3 
 
 9 
 
 
 
 35 7 
 
 o-6 74 
 
 233-8 
 
 2 1 5-5 
 
 -i 7 -5 
 
 49 
 
 '97 
 
 
 
 357 
 
 0-446 
 
 2l3'2 
 
 222"! 
 
 14-9 
 
 25 
 
 IO2 
 
 
 
 357 
 
 0-646 
 
 235-1 
 
 214*2 
 
 -i 5 7 
 
 3 
 
 u 
 
 
 
 35 7 
 
 0-487 
 
 2O9-5 
 
 221'0 
 
 18-0 
 
 q 
 
 36 
 
 
 
 357 
 
 o-652 
 
 23i'4 
 
 2l3'I 
 
 17-9 
 
 5 
 
 29 
 
 
 
 357 
 
 0-432 
 
 208-1 
 
 218-6 
 
 -i5-3 
 
 16 
 
 65 
 
 
 
 358 
 
 0-491 
 
 304-4 
 
 206-8 
 
 4-22-5 
 
 5 
 
 16 
 
 
 
 357 
 
 0-452 
 
 206-4 
 
 218-6 
 
 -16-8 
 
 4 
 
 46 
 
 
 
 358 
 
 0-488 
 
 3og-8 
 
 2O5'2 
 
 4-24-8 
 
 16 
 
 56 
 
 
 
 357 
 
 0-469 
 
 202'6 
 
 217-4 
 
 i8-5 
 
 i 
 
 10 
 
 
 
 358 
 
 0-471 
 
 307-4 
 
 204-8 
 
 + 23-2 
 
 o 
 
 u 
 
 
 
 357 
 
 0-425 
 
 200-4 
 
 216-6 
 
 -i5-7 
 
 3i 
 
 1 66 
 
 
 
 358 
 
 0-475 
 
 3 10-6 
 
 204-2 
 
 4-24-5 
 
 6 
 
 20 
 
 
 
 357 
 
 0-450 
 
 201-9 
 
 216-6 
 
 -17-5 
 
 22 
 
 64 
 
 
 
 35g 
 
 0-293 
 
 332-8 
 
 i8g-2 
 
 4-22-2 
 
 42 
 
 l6 7 
 
 
 
 35; 
 
 0-437 
 
 200-9 
 
 21 5'5 
 
 17-1 
 
 1 I 
 
 35 
 
 
 Sept. 14* 
 
 
 
 
 
 
 (504) 
 
 (230 9 ) 
 
 
 
 357 
 
 0-436 
 
 195-9 
 
 21 3'7 
 
 -17-5 
 
 16 
 
 5o 
 
 
 
 
 
 
 
 
 
 
 
 
 35 4 
 
 0-482 
 
 3og-8 
 
 23o'4 
 
 + 24-5 
 
 u 
 
 42 
 
 
 
 
 
 
 
 
 
 
 
 
 354 
 
 0-478 
 
 3i2-8 
 
 229-3 
 
 + 25-5 
 
 5 
 
 18 
 
 
 20774" 
 
 355 
 
 o-g85 
 
 25o-g 
 
 245-0 
 
 ->7'4 
 
 64 
 
 345 
 
 
 
 35g 
 
 0-368 
 
 44-6 
 
 190-4 
 
 + 22M 
 
 47 
 
 222 
 
 
 
 355 
 
 0-980 
 
 249'2 
 
 242-9 
 
 i 8-6 
 
 5o 
 
 3oo 
 
 7040 
 
 Sept. 12* 
 
 
 
 
 
 
 (566) 
 
 (2280) 
 
 
 
 355 
 
 0-964 
 
 248 - 9 
 
 238-8 
 
 18-1 
 
 20 
 
 83 
 
 
 
 
 
 
 
 
 
 
 
 
 355 
 
 0-946 
 
 248-8 
 
 235-2 
 
 -17-4 
 
 6 
 
 3i 
 
 
 
 
 
 
 
 
 
 
 
 
 355 
 
 o'gSi 
 
 245-2 
 
 235-3 
 
 20-g 
 
 i3 
 
 65 
 
 
 206-108 
 
 
 0-844 
 
 289-8 
 
 
 
 
 
 38 1 
 
 
 357 
 
 0-897 
 
 245-8 
 
 227-1 
 
 18-0 
 
 114 
 
 465 
 
 
 
 355 
 
 0-800 
 
 244-5 
 
 242-7 
 
 -17-2 
 
 i3o 
 
 652 
 
 
 
 357 
 
 0-842 
 
 246-4 
 
 220-9 
 
 -i5-4 
 
 22 
 
 82 
 
 724 < 
 
 
 355 
 
 0-849 
 
 241-7 
 
 241-6 
 
 19-4 
 
 o 
 
 9 
 
 
 
 357 
 
 0-822 
 
 2 4 3- 1 
 
 217-8 
 
 -17-2 
 
 55 
 
 256 
 
 
 
 355 
 
 0799 
 
 240-7 
 
 236-4 
 
 -i 8- 1 
 
 8 
 
 20 
 
 
 
 35 7 
 
 0-798 
 
 240-8 
 
 214-8 
 
 18-0 
 
 o 
 
 17 
 
 
 
 355 
 
 0-792 
 
 237-6 
 
 234-7 
 
 2O'O 
 
 22 
 
 97 
 
 
 
 358 
 
 o-655 
 
 2gg-5 
 
 206-5 
 
 4-24-5 
 
 i5 
 
 4 5 
 
 
 
 355 
 
 o- 77 3 
 
 240-7 
 
 234-1 
 
 -I7-I 
 
 22 
 
 88 
 
 
 
 35g 
 
 0-448 
 
 3o6-5 
 
 190-7 
 
 4-22'D 
 
 4 5 
 
 1 86 
 
 
 
 355 
 
 0-775 
 
 23 9 - 7 
 
 233-g 
 
 -17-9 
 
 O 
 
 5 
 
 
 
 36o 
 
 o-g33 
 
 75-2 
 
 98-0 
 
 4-I6-4 
 
 3 
 
 20 
 
 i36c 
 
 
 355 
 
 0-771 
 
 238-g 
 
 233-3 
 
 -18-3 
 
 6 
 
 9 
 
 
 
 36 1 
 
 0-968 
 
 73-3 
 
 gi' 
 
 4-18-0 
 
 24 
 
 68 
 
 688 sf 
 
 
 355 
 
 0-759 
 
 237-1 
 
 23i'7 
 
 ig-O 
 
 o 
 
 8 
 
 528 c 
 
 Sept. i5* 
 
 
 
 
 
 
 ( 4 3 1) 
 
 (i 963) 
 
 (2252) 
 
 
 357 
 
 0-705 
 
 236-g 
 
 227-4 
 
 l6'9 
 
 "4 
 
 4i3 
 
 
 
 
 
 
 
 
 
 
 
 
 357 
 
 0-676 
 
 235-3 
 
 224-8 
 
 -l6- 7 
 
 5 
 
 29 
 
 
 
 
 
 
 
 
 
 
 
 
 357 
 
 0-662 
 
 235-2 
 
 223-8 
 
 -16-2 
 
 5 
 
 >9 
 
 
 259-090 
 
 
 o-g5i 
 
 2go-5 
 
 
 
 
 
 2g5 
 
 
 357 
 
 0-676 
 
 230-7 
 
 223-0 
 
 19-3 
 
 o 
 
 2 
 
 
 
 35 7 
 
 0-987 
 
 25o - 5 
 
 227-7 
 
 -I7-9 
 
 79 
 
 3go 
 
 
 
 357 
 
 0-634 
 
 234-7 
 
 221-8 
 
 10-4 
 
 '9 
 
 72 
 
 
 
 35 7 
 
 0-975 
 
 2007 
 
 224-0 
 
 16-9 
 
 o 
 
 44 
 
 
 
 357 
 
 0-644 
 
 23o'7 
 
 219-9 
 
 -17-9 
 
 6 
 
 10 
 
 
 
 357 
 
 o-g65 
 
 25 r3 
 
 221-8 
 
 -l5-g 
 
 9 
 
 51 
 
 
 * Indian photo. The Areas of Spots and Facnla; are expressed in Millionths of the Sun's risible Hemisphere. 
 
 G4S93. 
 
REDUCTION OF SOLAR PHOTOGRAPHS THROUGHOUT 1878-1881. 
 
 MEASURES of POSITIONS and AREAS of SPOTS and FACUL^E upon the SUN'S DISK on PHOTOGRAPHS taken in the YEAK 1880 continued. 
 
 
 
 Dis- 
 
 
 HELIOOUAPIIIC 
 
 SPOTS. 
 
 FACULA. 
 
 
 
 Dis- 
 
 
 HEI.IOGKAPHIC 
 
 SPOTS. 
 
 FACUL.I:. 
 
 
 No. of 
 
 tance 
 
 _ . . 
 
 
 
 
 
 No. of 
 
 tance 
 
 . 
 
 
 
 
 Mean 
 Solar 
 Time. 
 
 Group, 
 and 
 Letter 
 for 
 Spot. 
 
 from 
 Centre 
 in 
 
 terms 
 of 
 Suu's 
 {adius. 
 
 rositlon 
 Angle 
 from 
 Suu's 
 Axis. 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBRA 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 WHOLE 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 Mean 
 Solar 
 Time. 
 
 Group, 
 and 
 
 Letter 
 for 
 Spot. 
 
 from 
 Centre 
 in 
 terms 
 of 
 Suu's 
 Radius. 
 
 Position 
 
 Angle 
 from 
 Sun's 
 Axis. 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBRA 
 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 WHOLE 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (aud for 
 Day). 
 
 1880. 
 
 
 
 
 
 o 
 
 u 
 
 
 
 
 1880. 
 
 
 
 
 
 o 
 
 o 
 
 
 
 
 259 a 'ogo 
 
 357 
 
 0-948 
 
 25o-5 
 
 218-2 
 
 1 5-g 
 
 O 
 
 3i 
 
 
 263 d- 7i4 
 
 362 
 
 0'994 
 
 290-1 
 
 172-2 
 
 + 20-7 
 
 46 
 
 322 
 
 
 
 357 
 
 0-942 
 
 248-7 
 
 2l6'7 
 
 17-2 
 
 5 9 
 
 142 
 
 gi8 sf 
 
 
 36o 
 
 o-zg5 
 
 3o2-8 
 
 io3'g 
 
 + 16-0 
 
 '4 
 
 29 
 
 
 
 358 
 
 0-828 
 
 294'7 
 
 2o5-6 
 
 + 24-4 
 
 o 
 
 8 
 
 2Og c 
 
 
 36o 
 
 o-24g 
 
 3o8-5 
 
 100-6 
 
 + i5-7 
 
 o 
 
 8 
 
 
 
 35g 
 
 o-65i 
 
 2g6'2 
 
 i8g-o 
 
 + 22-3 
 
 3 4 
 
 184 
 
 
 
 36o 
 
 0-224 
 
 3o6-i 
 
 997 
 
 + 14-4 
 
 o 
 
 25 
 
 
 
 36o 
 
 0-780 
 
 74-6 
 
 98-6 
 
 + 16-4 
 
 7 
 
 '4 
 
 i4*/ 
 
 
 36 1 
 
 0-189 
 
 357-0 
 
 89-6 
 
 + 17-8 
 
 7 
 
 16 
 
 
 
 36 1 
 
 0-864 
 
 73-3 
 
 8g-8 
 
 + I8-0 
 
 21 
 
 72 
 
 
 
 364 
 
 0-457 
 
 59'4 
 
 64-4 
 
 + 19-8 
 
 4 
 
 41 
 
 
 
 36 1 
 
 0-873 
 
 74'9 
 
 887 
 
 + 16-6 
 
 O 
 
 6 
 
 402 nf 
 
 
 36 4 
 
 0-478 
 
 63-2 
 
 62-3 
 
 + 18-7 
 
 4 
 
 1 1 
 
 
 
 
 0-972 
 
 70-2 
 
 
 
 
 
 379 
 
 
 36 4 
 
 '499 
 
 62-1 
 
 61-2 
 
 + 197 
 
 i 
 
 6 
 
 
 Sept. 1 6 
 
 
 
 
 
 
 (2'9) 
 
 (942) 
 
 (23o 7 ) 
 
 
 364 
 
 o*5 1 5 
 
 64'9 
 
 5g-6 
 
 + 18-7 
 
 9 
 
 40 
 
 
 
 
 
 
 
 
 
 
 
 
 364 
 
 o-528 
 
 60-2 
 
 5 97 
 
 + 21-3 
 
 i 
 
 7 
 
 
 259-979 
 
 
 0-986 
 
 25 r3 
 
 
 
 
 
 666 
 
 Sept. 21* 
 
 
 
 
 
 
 (96) 
 
 (5o5) 
 
 
 
 
 0-917 
 
 294-3 
 
 
 
 
 
 265 
 
 
 
 
 
 
 
 
 
 
 
 35g 
 
 0-778 
 
 2g3'2 
 
 188-8 
 
 + 22-4 
 
 60 
 
 2l3 
 
 261 n 
 
 265-o3o 
 
 
 0-909 
 
 236-2 
 
 
 
 
 
 I5 7 
 
 
 362 
 
 o-633 
 
 2g5'3 
 
 176-0 
 
 + 21-3 
 
 i3 
 
 27 
 
 41 c 
 
 
 36o 
 
 o-56o 
 
 288-9 
 
 io5-o 
 
 + 16-2 
 
 2 
 
 7 
 
 
 
 36o 
 
 o-635 
 
 72-9 
 
 99'3 
 
 + i6-3 
 
 7 
 
 23 
 
 
 
 36 1 
 
 0-347 
 
 304-6 
 
 89-1 
 
 + 18-0 
 
 3 
 
 9 
 
 
 
 36o 
 
 0-667 
 
 75-0 
 
 97'4 
 
 + I5-2 
 
 
 
 8 
 
 
 
 36 1 
 
 0-327 
 
 2 99'9 
 
 887 
 
 + 16-0 
 
 o 
 
 6 
 
 
 
 36o 
 
 0-687 
 
 72-6 
 
 g5-2 
 
 + 17-1 
 
 
 
 2 
 
 
 
 36 1 
 
 o-33o 
 
 304-0 
 
 88-2 
 
 4-17-3 
 
 o 
 
 4 
 
 
 
 36 1 
 
 0-750 
 
 7 2-5 
 
 89-8 
 
 + 17-8 
 
 21 
 
 62 
 
 324/ 
 
 
 36 1 
 
 0-343 
 
 3 1 3-4 
 
 87-0 
 
 + 20-3 
 
 o 
 
 3 
 
 
 
 
 0-899 
 
 71-0 
 
 
 
 
 
 170 
 
 
 364 
 
 0-246 
 
 25-4 
 
 65-3 
 
 + 197 
 
 "4 
 
 63 
 
 
 
 
 0-947 
 
 1 1 3-5 
 
 
 
 
 
 85 
 
 
 36 4 
 
 0-267 
 
 26-5 
 
 64-4 
 
 + 20-7 
 
 o 
 
 3 
 
 
 Sept. 17 
 
 
 
 
 
 
 (10.) 
 
 (335) 
 
 (1812) 
 
 
 36 4 
 
 0-290 
 
 36-1 
 
 61-2 
 
 + 20-4 
 
 
 
 7 
 
 
 
 
 
 
 
 
 
 
 
 
 364 
 
 0-271 
 
 44- 1 
 
 6o-3 
 
 + 18-0 
 
 
 
 7 
 
 
 261-064 
 
 
 o-g85 
 
 293-8 
 
 
 
 
 
 238 
 
 
 36 4 
 
 0-289 
 
 44-3 
 
 5g'4 
 
 + 18-7 
 
 2 
 
 i5 
 
 
 
 
 0-882 
 
 3i5-8 
 
 
 
 
 
 59 
 
 
 364 
 
 o-3o6 
 
 43-0 
 
 58-g 
 
 + 19-7 
 
 O 
 
 i3 
 
 
 
 
 0-833 
 
 229-5 
 
 
 
 
 
 662 
 
 
 366 
 
 0-899 
 
 1 1 6 - o 
 
 12-7 
 
 97 
 
 6 
 
 42 
 
 
 
 35g 
 
 0-899 
 
 291-3 
 
 188-6 
 
 + 22'2 
 
 81 
 
 212 
 
 281 c 
 
 
 366 
 
 o-go7 
 
 i i5'i 
 
 11-4 
 
 -ig-2 
 
 o 
 
 6 
 
 
 
 362 
 
 0-801 
 
 291-9 
 
 177-0 
 
 + 21-5 
 
 o 
 
 38 
 
 23l/ 
 
 
 366 
 
 o-g35 
 
 u3-g 
 
 6-9 
 
 -19-4 
 
 . 9 x 
 
 3i 
 
 463 c 
 
 
 362 
 
 o- 7 5g 
 
 290-8 
 
 173-0 
 
 + 20-3 
 
 16 
 
 57 
 
 
 Sept. 2 2 
 
 
 
 
 
 
 (36) 
 
 (216) 
 
 (620) 
 
 
 36o 
 
 0-408 
 
 65-6 
 
 101-4 
 
 + i6-3 
 
 12 
 
 28 
 
 
 
 
 
 
 
 
 
 
 
 
 36o 
 
 0-457 
 
 68-6 
 
 97'9 
 
 + 16-0 
 
 O 
 
 20 
 
 
 
 
 
 
 
 
 
 
 
 
 36 1 
 
 o-55o 
 
 6g-i 
 
 9^4 
 
 + i7'3 
 
 
 
 16 
 
 
 265-730 
 
 36 1 
 
 0-481 
 
 293-8 
 
 89-0 
 
 + I7-3 
 
 o 
 
 18 
 
 
 
 36 1 
 
 0-555 
 
 71-2 
 
 gi'o 
 
 + 16-2 
 
 o 
 
 4 
 
 
 
 364 
 
 0-227 
 
 341-5 
 
 66-1 
 
 + ig-3 
 
 14 
 
 68 
 
 
 
 36 1 
 
 0-570 
 
 72-2 
 
 89-8 
 
 + i5-g 
 
 
 
 6 
 
 
 
 36 4 
 
 0'205 
 
 355-g 
 
 62-6 
 
 + 18-7 
 
 o 
 
 5 
 
 
 
 36 1 
 
 0-579 
 
 6g-5 
 
 Sg-S 
 
 + 17-6 
 
 12 
 
 42 
 
 
 
 364 
 
 0-208 
 
 11-4 
 
 5g-2 
 
 + 18-7 
 
 o 
 
 10 
 
 
 
 363 
 
 0-609 
 
 57-0 
 
 8g-8 
 
 + 25-2 
 
 O 
 
 1 1 
 
 
 
 366 
 
 0-8 1 5 
 
 ng-8 
 
 i3-3 
 
 ig-3 
 
 17 
 
 4 5 
 
 
 
 364 
 
 0-866 
 
 7 i-5 
 
 63-6 
 
 + ig-5 
 
 
 
 44 
 
 i loZnp 
 
 Sept. 23* 
 
 
 
 
 
 
 (30 
 
 (146) 
 
 
 
 364 
 
 0-898 
 
 72-5 
 
 5g-5 
 
 + 18-8 
 
 o 
 
 5 
 
 
 
 
 
 
 
 
 
 
 
 
 
 0-788 
 
 1 65- 8 
 
 
 
 
 
 52 
 
 
 
 
 
 
 
 
 
 
 
 
 0-867 
 
 1187 
 
 
 
 
 
 23o 
 
 266-gi2 
 
 36i 
 
 0-733 
 
 287-6 
 
 93-7 
 
 + I7'5 
 
 6 
 
 21 
 
 
 
 
 0-946 
 
 79'2 
 
 
 
 
 
 i go 
 
 
 36 1 
 
 o-6g8 
 
 28g-8 
 
 go'5 
 
 + 18-7 
 
 2 
 
 6 
 
 
 Sept. 1 8 
 
 
 
 
 
 
 (12,) 
 
 (483) 
 
 (3o 4 6) 
 
 
 36 4 
 
 o-3g2 
 
 304-1 
 
 66-8 
 
 -f-ig-2 
 
 17 
 
 64 
 
 
 
 
 
 
 
 
 
 
 
 
 36 4 
 
 0-324 
 
 3i2-g 
 
 6r3 
 
 + '9'4 
 
 O 
 
 16 
 
 
 262-983 
 
 
 0-942 
 
 234-2 
 
 
 
 
 
 304 
 
 
 364 
 
 o'3 1 3 
 
 3i5'7 
 
 60-2 
 
 + ig-6 
 
 
 
 23 
 
 
 
 
 0-806 
 
 294-0 
 
 
 
 
 
 23 1 
 
 
 366 
 
 0-661 
 
 128-8 
 
 14-0 
 
 -187 
 
 5 
 
 28 
 
 
 
 362 
 
 0-967 
 
 290-7 
 
 I75-3 
 
 + 21-7 
 
 29 
 
 21 1 
 
 568 n 
 
 
 366 
 
 0-679 
 
 127-3 
 
 I2'2 
 
 1 8-6 
 
 
 
 7 
 
 
 
 36o 
 
 0-129 
 
 3 47 -6 
 
 100-3 
 
 + 14-2 
 
 O 
 
 I 
 
 
 
 368 
 
 0-961 
 
 1 1 o-g 
 
 336'4 
 
 -17-8 
 
 36 
 
 n5 
 
 340 c 
 
 
 36o 
 
 0-178 
 
 337-3 
 
 102-8 
 
 + 16-4 
 
 12 
 
 3o 
 
 
 
 
 0-868 
 
 n8-3 
 
 
 
 
 
 302 
 
 
 36 1 
 
 0-240 
 
 3g'2 
 
 89-4 
 
 + 17-9 
 
 I I 
 
 22 
 
 
 Sept. 24* 
 
 
 
 
 
 
 (66) 
 
 (280) 
 
 (642) 
 
 
 36 4 
 
 0-579 
 
 65-o 
 
 6 4"9 
 
 + 2O-0 
 
 O 
 
 7 
 
 
 
 
 
 
 
 
 
 
 
 
 36 4 
 
 o-Sgg 
 
 66-7 
 
 63-2 
 
 + ig-5 
 
 
 
 8 
 
 
 267 - g36 
 
 
 0-877 
 
 288-5 
 
 
 
 
 
 607 
 
 
 36 4 
 
 0-617 
 
 67-6 
 
 61-7 
 
 + 19-2 
 
 o 
 
 i 
 
 
 
 
 0-728 
 
 232-0 
 
 
 
 
 
 107 
 
 
 36 4 
 
 0-644 
 
 68-g 
 
 59-4 
 
 + i8-g 
 
 6 
 
 i3 
 
 
 
 36 4 
 
 0-575 
 
 293-7 
 
 67-0 
 
 + ig-i 
 
 '4 
 
 38 
 
 
 
 365 
 
 0-728 
 
 63-g 
 
 53-3 
 
 + 23-7 
 
 
 
 18 
 
 222 C 
 
 
 364 
 
 0-557 
 
 294-1 
 
 65-7 
 
 + i8-g 
 
 o 
 
 6 
 
 
 
 
 o-65i 
 
 53-3 
 
 
 
 
 
 55 
 
 
 364 
 
 0-526 
 
 297-2 
 
 63-o 
 
 + '9"9 
 
 i 
 
 3o 
 
 
 
 
 0-898 
 
 63-o 
 
 
 
 
 
 I 10 
 
 
 365 
 
 0-473 
 
 3o5-8 
 
 57-7 
 
 4-22-3 
 
 o 
 
 5 
 
 
 
 
 o-g 1 3 
 
 108-7 
 
 
 
 
 
 400 
 
 
 366 
 
 0-524 
 
 144-9 
 
 14-8 
 
 -i 8-8 
 
 5 
 
 16 
 
 35/ 
 
 Sept. 20 
 
 
 
 
 
 
 (58) 
 
 (3n) 
 
 (i8go) 
 
 
 367 
 
 0-756 
 
 125-6 
 
 3o2'3 
 
 2o-g 
 
 o 
 
 16 
 
 a i?/ 
 
 * Indian photo. The Areas of Spots and Facula; are expressed in Millionths of the Sun's visible Hemisphere. 
 
REDUCTION OF SOLAR PHOTOGRAPHS THROUGHOUT 1878-1881. 
 
 3.-. 
 
 Mi: VSUKES of POSITIONS and AREAS of SPOTS and FACUI^E upon the SUN'S DISK on PHOTOGRAPHS taken in the YEAR 1880 continued. 
 
 
 
 Dis- 
 
 
 HEUOOBAI-HIC 
 
 SPOTS. 
 
 I'l. 1 1 !.. 
 
 
 
 Dis- 
 
 
 HELIOOBAPIIIC 
 
 SPOTS. 
 
 FACUUE. 
 
 Mean 
 
 Solar 
 ISme. 
 
 No. of 
 Gronp, 
 
 and 
 Letter 
 for 
 
 Spot. 
 
 tance 
 
 frun 
 Centre 
 in 
 terms 
 of 
 Sun's 
 liU'lius 
 
 Position 
 Angle 
 from 
 
 Sun's 
 Axis. 
 
 
 
 
 Mean 
 Solar 
 Time. 
 
 No. of 
 Group, 
 and 
 Letter 
 for 
 Spot. 
 
 tance 
 from 
 Centre 
 in 
 terms 
 of 
 Sun's 
 Radius. 
 
 Position 
 Angle 
 from 
 Sun's 
 Axis. 
 
 
 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMIiRA 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 \VHOLK 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBRA 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 WHOLE 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 1880. 
 
 
 
 
 
 o 
 
 o 
 
 
 
 
 1880. 
 
 
 
 o 
 
 o 
 
 o 
 
 
 
 
 267'<-936 
 
 368 
 
 0-875 
 
 1 15-7 
 
 337-2 
 
 -18-6 
 
 47 
 
 264 
 
 
 272-1-077 
 
 
 0*960 
 
 2gro 
 
 
 
 
 
 290 
 
 
 36g 
 
 0-909 
 
 1 1 5-o 
 
 332-7 
 
 ig-3 
 
 
 
 '7 
 
 
 
 
 0-853 
 
 248-0 
 
 
 
 
 
 283 
 
 
 36 9 
 
 o-g35 
 
 1*4-4 
 
 328-6 
 
 ig-8 
 
 o 
 
 4 
 
 5o3 c 
 
 
 366 
 
 0-609 
 
 229-7 
 
 10-8 
 
 19-5 
 
 
 
 13 
 
 
 
 
 0-927 
 
 7 6-5 
 
 
 
 
 
 655 
 
 
 366 
 
 0-641 
 
 227-1 
 
 8-5 
 
 2O'O 
 
 o 
 
 15 
 
 
 Sept. 2") 
 
 
 
 
 
 
 (67) 
 
 (432) 
 
 (2124) 
 
 
 367 
 
 0-546 
 
 221-1 
 
 0-8 
 
 l8-0 
 
 o 
 
 27 
 
 
 
 
 
 
 
 
 
 
 
 
 36 7 
 
 o-55o 
 
 2I7H 
 
 359-3 
 
 ig-6 
 
 i5 
 
 1 4 3 
 
 
 
 
 
 
 
 
 
 
 
 
 367 
 
 0-540 
 
 212-0 
 
 356-4 
 
 20-8 
 
 4 
 
 29 
 
 
 268-800 
 
 364 
 
 0774 
 
 291-4 
 
 72-2 
 
 + 20-8 
 
 6 
 
 32 
 
 
 
 36 7 
 
 o'5o5 
 
 21 3'4 
 
 355-6 
 
 i 8-5 
 
 12 
 
 72 
 
 
 
 36 4 
 
 0-714 
 
 289-6 
 
 67-0 
 
 + 187 
 
 i3 
 
 36 
 
 
 
 367 
 
 o'5 ii 
 
 207-6 
 
 353-2 
 
 -20-4 
 
 83 
 
 3 74 
 
 
 
 364 
 
 0-653 
 
 291-4 
 
 61-7 
 
 + 19-0 
 
 5 
 
 23 
 
 
 
 368 
 
 0-419 
 
 186-0 
 
 341-3 
 
 -17-8 
 
 36 
 
 162 
 
 
 
 365 
 
 0-607 
 
 296-7 
 
 57-3 
 
 + 21-4 
 
 
 
 H 
 
 
 
 368 
 
 0-418 
 
 I82-6 
 
 339-8 
 
 ->7'9 
 
 7 
 
 3i 
 
 
 
 368 
 
 0-708 
 
 121-3 
 
 33g-i 
 
 18-2 
 
 33 
 
 i65 
 
 248 c 
 
 
 36g 
 
 o- 4 35 
 
 170-0 
 
 334-1 
 
 i 8-6 
 
 o 
 
 14 
 
 
 
 36q 
 
 0-819 
 
 1 19*1 
 
 332-8 
 
 -19-2 
 
 7 
 
 27 
 
 
 
 36g 
 
 0-442 
 
 167-2 
 
 332-7 
 
 -18-8 
 
 o 
 
 u 
 
 
 
 36g 
 
 0-845 
 
 u8-3 
 
 33o - o 
 
 -197 
 
 o 
 
 25 
 
 424 c 
 
 
 36g 
 
 0-445 
 
 1 65- 2 
 
 33r8 
 
 -18-7 
 
 2 9 
 
 100 
 
 
 
 36 9 
 
 0-860 
 
 118-5 
 
 328-4 
 
 20-3 
 
 4 
 
 II 
 
 
 
 36 9 
 
 0-478 
 
 161-1 
 
 32g-2 
 
 -19-2 
 
 3 4 
 
 126 
 
 
 
 3"o 
 
 0-872 
 
 74-6 
 
 3zo-8 
 
 + 16-7 
 
 7 
 
 41 
 
 
 
 370 
 
 0-297 
 
 52-5 
 
 324-5 
 
 4-16-9 
 
 68 
 
 2gi 
 
 
 
 370 
 
 0-904 
 
 7 5'2 
 
 3i6-5 
 
 + i6-3 
 
 7 
 
 23 
 
 806 c 
 
 
 370 
 
 0-243 
 
 55-6 
 
 321-5 
 
 + '7'9 
 
 o 
 
 i3 
 
 
 Sept. 26* 
 
 
 
 
 
 
 (82) 
 
 (397) 
 
 (1478) 
 
 
 370 
 
 o-366 
 
 6r8 
 
 3ig-i 
 
 4-i6-2 
 
 8 
 
 1 3 7 
 
 
 
 
 
 
 
 
 
 
 
 
 370 
 
 0-408 
 
 65-6 
 
 3i6-i 
 
 + i5-g 
 
 i3 
 
 8g 
 
 
 
 
 
 
 
 
 
 
 
 
 
 0-789 
 
 65-8 
 
 
 
 
 
 420 
 
 269-907 
 
 
 0-927 
 
 246-0 
 
 
 
 
 
 147 
 
 Sept. 29 
 
 
 
 
 
 
 (3o 9 ) 
 
 (6 47 ) 
 
 (993) 
 
 
 36o 
 
 0-997 
 
 287-0 
 
 94-3 
 
 + 17-4 
 
 o 
 
 28 
 
 447 nf 
 
 
 
 
 
 
 
 
 
 
 
 364 
 
 0-91 5 
 
 291-2 
 
 74-1 
 
 + 22-1 
 
 o 
 
 8 
 
 
 
 
 
 
 
 
 
 
 
 
 364 
 
 0-910 
 
 2897 
 
 73-4 
 
 + 20-7 
 
 I 
 
 35 
 
 
 272-804 
 
 366 
 
 0759 
 
 237-1 
 
 u-5 
 
 ig'5 
 
 '4 
 
 7' 
 
 
 
 36 4 
 
 o-g32 
 
 290-9 
 
 72-4 
 
 + l6'7 
 
 10 
 
 40 
 
 
 
 366 
 
 0-732 
 
 234-1 
 
 8-2 
 
 2O'3 
 
 2 
 
 49 
 
 
 
 064 
 
 0-860 
 
 287-9 
 
 66-g 
 
 + 18-8 
 
 3 
 
 18 
 
 
 
 36 7 
 
 0*640 
 
 23r3 
 
 0-6 
 
 -17-9 
 
 2 9 
 
 125 
 
 
 
 36 4 
 
 0-855 
 
 288-9 
 
 66-2 
 
 -f-20-5 
 
 o 
 
 4 
 
 
 
 36 7 
 
 o-65o 
 
 229-1 
 
 0-4 
 
 19-5 
 
 38 
 
 126 
 
 
 
 364 
 
 o-8i5 
 
 288-8 
 
 61-9 
 
 + 19-2 
 
 
 
 8 
 
 7i/ 
 
 
 367 
 
 o-63g 
 
 225'! 
 
 358-0 
 
 2o-g 
 
 
 
 20 
 
 
 
 366 
 
 0-450 
 
 ig8-4 
 
 i5-g 
 
 -i 8-5 
 
 6 
 
 32 
 
 
 
 36 7 
 
 0-606 
 
 226-8 
 
 356-8 
 
 i 8-6 
 
 17 
 
 60 
 
 
 
 367 
 
 '479 
 
 i58'7 
 
 356-7 
 
 i 9-8 
 
 2 
 
 5 4 
 
 
 
 367 
 
 o-58g 
 
 220-6 
 
 353-2 
 
 2O'5 
 
 97 
 
 427 
 
 
 
 368 
 
 o-5g2 
 
 133-5 
 
 340-6 
 
 -17-9 
 
 3i 
 
 I 7 3 
 
 
 
 368 
 
 0-462 
 
 206-9 
 
 341-7 
 
 -17-8 
 
 4 3 
 
 238 
 
 
 
 36g 
 
 0-699 
 
 126-6 
 
 33i-o 
 
 -19-2 
 
 16 
 
 84 
 
 2 9 3/ 
 
 
 368 
 
 0-438 
 
 190-2 
 
 333-8 
 
 i8-g 
 
 
 
 4 
 
 
 
 370 
 
 0-741 
 
 74-2 
 
 3ig-6 
 
 + 16-3 
 
 27 
 
 75 
 
 2 4 gc 
 
 
 36 9 
 
 0-431 
 
 186-7 
 
 332-2 
 
 -i 8-6 
 
 i3 
 
 7 
 
 
 
 
 o-gi3 
 
 8o-5 
 
 
 
 
 
 99 
 
 
 36g 
 
 0-443 
 
 181-8 
 
 32g-g 
 
 ig-6 
 
 i3 
 
 36 
 
 
 
 
 o-g58 
 
 70-0 
 
 
 
 
 
 486 
 
 
 36g 
 
 0-444 
 
 179-5 
 
 328'g 
 
 -19-7 
 
 4 
 
 28 
 
 
 Sept. 27 
 
 
 
 
 
 
 (96) 
 
 (55g) 
 
 (25 9 2) 
 
 
 370 
 
 0-184 
 
 i3-5 
 
 326-5 
 
 + 16-9 
 
 61 
 
 278 
 
 
 
 
 
 
 
 
 
 
 
 
 370 
 
 0-189 
 
 29-7 
 
 323-5 
 
 + 16-0 
 
 4 
 
 18 
 
 
 270-808 
 
 
 o-g26 
 
 289-3 
 
 
 
 
 
 1024 
 
 
 370 
 
 0-214 
 
 28-5 
 
 323-0 
 
 4-17-3 
 
 7 
 
 25 
 
 
 
 366 
 
 0-553 
 
 22O-0 
 
 i 7 -5 
 
 -18-8 
 
 4 
 
 21 
 
 
 
 370 
 
 o-i gg 
 
 35-i 
 
 322-3 
 
 4-i5-g 
 
 o 
 
 6 
 
 
 
 366 
 
 0-534 
 
 2i5'6 
 
 14-6 
 
 ig-3 
 
 
 
 9 
 
 
 
 370 
 
 O'2l3 
 
 40-5 
 
 320-g 
 
 4-i5-8 
 
 
 
 5 
 
 
 
 36; 
 
 0-416 
 
 i8g-o 
 
 35g-o 
 
 -17-4 
 
 
 
 4 2 
 
 
 
 370 
 
 D'225 
 
 45-9 
 
 3ig-5 
 
 + i5-5 
 
 7 
 
 25 
 
 
 
 36 7 
 
 0-435 
 
 i85'7 
 
 358-o 
 
 18-9 
 
 o 
 
 9 
 
 
 
 370 
 
 0-237 
 
 46-0 
 
 3i8-g 
 
 + 16-0 
 
 4 
 
 9 
 
 
 
 36 7 
 
 0-461 
 
 183-4 
 
 357-1 
 
 20-5 
 
 o 
 
 16 
 
 
 
 370 
 
 0-244 
 
 49-6 
 
 3i8-o 
 
 4-15-6 
 
 o 
 
 5 
 
 
 
 367 
 
 0-455 
 
 >77'9 
 
 354-4 
 
 20-2 
 
 29 
 
 95 
 
 
 
 370 
 
 O-26O 
 
 52-5 
 
 3i6-8 
 
 + i5-6 
 
 2 
 
 7 
 
 
 
 368 
 
 0-475 
 
 i5o'4 
 
 341-2 
 
 -I 7 -8 
 
 55 
 
 199 
 
 
 
 370 
 
 0-273 
 
 5i-3 
 
 3 1 6-3 
 
 4-16-3 
 
 12 
 
 37 
 
 
 
 368 o-5o3 
 
 146-7 
 
 338-5 
 
 -18-4 
 
 o 
 
 i5 
 
 
 
 
 
 
 
 
 
 
 49 
 
 
 36g 0-021 
 
 144-5 
 
 336-8 
 
 -18-7 
 
 o 
 
 8 
 
 
 Sept.3o* 
 
 
 
 
 
 
 (36 7 ) 
 
 (i685) 
 
 (49) 
 
 
 369 o-53i 
 
 141-1 
 
 334-9 
 
 -18-1 
 
 
 
 12 
 
 
 
 
 
 
 
 
 
 
 
 
 36g 0*564 
 
 i38'o 
 
 332-0 
 
 18-6 
 
 3i 
 
 I2g 
 
 
 
 
 
 
 
 
 
 
 
 
 36g o-5g5 
 
 1 36-5 
 
 329-7 
 
 ig-5 
 
 45 
 
 I 7 2 
 
 
 274-021 
 
 366 
 
 o-gi6 
 
 246*1 
 
 i5-o 
 
 -18-8 
 
 
 
 27 
 
 487/7 
 
 
 370 0-534 
 
 68-2 
 
 324-3 
 
 + I7'2 
 
 12 
 
 38 
 
 
 
 366 
 
 0-900 
 
 245-6 
 
 127 
 
 i 8-6 
 
 o 
 
 23 
 
 
 
 3 7 o 
 
 o-57g 
 
 69-6 
 
 32o-g 
 
 + 17-2 
 
 I 
 
 ii 
 
 
 
 366 
 
 0-900 
 
 244-5 
 
 12-4 
 
 ig-6 
 
 o 
 
 12 
 
 
 
 3 7 o 
 
 0-608 
 
 ;n 
 
 3 1 9-0 
 
 + 16-6 
 
 4 
 
 20 
 
 
 
 366 
 
 0-869 
 
 242-3 
 
 7-8 
 
 20- 1 
 
 2 
 
 24 
 
 
 
 370 
 
 o - 6o5 
 
 72-8 
 
 318-7 
 
 + 10-7 
 
 9 
 
 37 
 
 
 
 367 
 
 0-824 
 
 241-8 
 
 2-9 
 
 -18-7 
 
 4 
 
 23 
 
 
 
 370 
 
 0-629 
 
 7 3-i 
 
 3i6-g 
 
 + I5-8 
 
 '4 
 
 53 
 
 
 
 367 
 
 0-806 
 
 241-4 
 
 ro 
 
 i 8-3 
 
 22 
 
 '*! 
 
 
 
 
 0-921 
 
 68-7 
 
 
 
 
 
 5i5 
 
 
 367 
 
 0-790 
 
 238-g 
 
 358-7 
 
 ig'5 
 
 
 
 63 
 
 
 Sept. 28* 
 
 
 
 
 
 
 (204) 
 
 (886) 
 
 (i53g) 
 
 
 36 7 
 
 0-773 
 
 240-4 
 
 357-8 
 
 -17-7 
 
 12 
 
 23 
 
 
 * Indian photo. The Areas of Spots and Facnlae are expressed in Millionths of the Sun's risible Hemisphere. 
 
 E 2 
 
36 
 
 REDUCTION OF SOLAR PHOTOGRAPHS THROUGHOUT 1878-1881. 
 
 MEASURES of POSITIONS and AREAS of SPOTS and FACUL^E upon the SUN'S DISK on PHOTOGRAPHS taken in the YKAK 1S80 continued. 
 
 
 
 Dis- 
 
 
 HELIOORAPHIC 
 
 SPOTS. 
 
 FACUL.S:. 
 
 
 
 Dis- 
 
 
 HELIOGRAI-HIO 
 
 SPOTS. 
 
 FACUL.E. 
 
 Mean 
 
 Sohu 
 Time. 
 
 No. of 
 jroup, 
 and 
 Letter 
 for 
 Spot. 
 
 tance 
 from 
 Centre 
 in 
 terms 
 of 
 Sun's 
 Radius. 
 
 Position 
 Angle 
 from 
 Sun's 
 Axis. 
 
 
 
 
 Mean 
 
 Solar 
 lime. 
 
 No. of 
 jroup, 
 and 
 Letter 
 for 
 Spot. 
 
 tance 
 from 
 Centre 
 in 
 terms 
 of 
 Sun's 
 Radius. 
 
 Position 
 Angle 
 from 
 Sun's 
 Axis. 
 
 
 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBRA 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 WHOLE 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBRA 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 WHOLE 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 1880. 
 
 
 
 
 
 o 
 
 o 
 
 
 
 
 1880. 
 
 
 
 
 
 o 
 
 
 
 
 
 
 274 d '02l 
 
 367 
 
 0-769 
 
 238-2 
 
 355-8 
 
 -187 
 
 7 
 
 18 
 
 
 277*738 
 
 368 
 
 0-q88 
 
 200-4 
 
 342-1 
 
 -18-1 
 
 40 
 
 igo 
 
 280 sf 
 
 
 367 
 
 0-763 
 
 235-4 
 
 355-1 
 
 20-8 
 
 4 
 
 35 
 
 
 
 370 
 
 0-884 
 
 284'g 
 
 326-6 
 
 4-16-1 
 
 I 12 
 
 35 1 
 
 4 8 9 C 
 
 
 367 
 
 0-735 
 
 234-2 
 
 362-4 
 
 20-4 
 
 96 
 
 467 
 
 
 
 374 
 
 0-699 
 
 120-8 
 
 225-5 
 
 i 6-0 
 
 8 
 
 25 
 
 
 
 368 
 
 0'6o8 
 
 22g-8 
 
 342*0 
 
 -17-3 
 
 4 
 
 '77 
 
 
 Oct. 5* 
 
 
 
 
 
 
 (160) 
 
 (57') 
 
 (769) 
 
 
 368 
 
 0-678 
 
 226-4 
 
 338-6 
 
 -17-9 
 
 
 
 12 
 
 
 
 
 
 
 
 
 
 
 
 
 36g 
 
 0-626 
 
 217-8 
 
 332-8 
 
 i 8-3 
 
 4 
 
 23 
 
 
 
 
 
 
 
 
 
 
 
 
 36g 
 
 O'5lO 
 
 212-7 
 
 329-9 
 
 iq-O 
 
 2 
 
 7 
 
 
 278-786 
 
 370 
 
 0-967 
 
 286-2 
 
 326-4 
 
 4i6-3 
 
 62 
 
 33g 
 
 8 4 2/ 
 
 
 370 
 
 o - 3oo 
 
 307-8 
 
 327-4 
 
 4-16-8 
 
 49 
 
 260 
 
 
 
 373 
 
 0-536 
 
 igS'l 
 
 269-0 
 
 24-8 
 
 5 
 
 16 
 
 
 
 370 
 
 0-269 
 
 3io-g 
 
 326-2 
 
 4- 1 6-5 
 
 5 
 
 ii 
 
 
 
 3 7 3 
 
 0-563 
 
 i8g-6 
 
 266-0 
 
 26-0 
 
 3 
 
 1 1 
 
 
 
 370 
 
 0-260 
 
 320-2 
 
 323-1 
 
 4-18-0 
 
 
 
 4 
 
 
 
 3 74 
 
 0*646 
 
 l32'O 
 
 220-4 
 
 -16-7 
 
 6 
 
 23 
 
 
 
 370 
 
 0-264 
 
 32 4 -8 
 
 32i-g 
 
 4-18-4 
 
 o 
 
 2 
 
 
 
 376 
 
 0-906 
 
 68-5 
 
 184-9 
 
 4-22-2 
 
 8 
 
 26 
 
 
 
 370 
 
 0-253 
 
 33 1 -8 320-3 
 
 4 '9'4 
 
 o 
 
 6 
 
 
 
 376 
 
 0-908 
 
 7 ,-6 
 
 184-6 
 
 4I9-3 
 
 o 
 
 9 
 
 49 5 / 
 
 
 370 
 
 0-209 
 
 324-7 
 
 320-2 
 
 4-16-3 
 
 8 
 
 '9 
 
 
 Oct. 6* 
 
 
 
 
 
 
 (84) 
 
 (424) 
 
 (i33 7 ) 
 
 
 3 7 o 
 
 0'2 I I 
 
 332-8 
 
 3i8-8 
 
 4-17-3 
 
 
 
 i5 
 
 
 
 
 
 
 
 
 
 
 
 
 370 
 
 O'lSl 
 
 332-O 
 
 3i8-i 
 
 + 167 
 
 9 
 
 19 
 
 
 
 
 
 
 
 
 
 
 
 
 370 
 
 O'ig6 
 
 337-5 
 
 317-6 
 
 4 17-0 
 
 
 
 i5 
 
 
 280-076 
 
 
 0-849 
 
 320-5 
 
 
 
 
 
 414 
 
 
 370 
 
 0-176 
 
 342-1 
 
 3i6-2 
 
 4-16-1 
 
 6 
 
 16 
 
 
 
 3 7 2 
 
 0-837 
 
 242-7 
 
 284-7 
 
 -187 
 
 o 
 
 10 
 
 1287} 
 
 
 3 7 i 
 
 0-476 
 
 67-4 
 
 287-8 
 
 4-20-8 
 
 5 
 
 9 
 
 
 
 373 
 
 o-63g 
 
 216-2 
 
 267-7 
 
 25-3 
 
 IO 
 
 49 
 
 
 
 3 7 i 
 
 0-620 
 
 52-0 
 
 286-4 
 
 + 24-6 
 
 o 
 
 2 
 
 
 
 373 
 
 o-632 
 
 210-8 
 
 264-3 
 
 -27-0 
 
 5 
 
 37 
 
 
 
 
 0-877 
 
 111-7 
 
 
 
 
 
 143 
 
 
 374 
 
 0-397 
 
 164-1 
 
 226-7 
 
 -16-2 
 
 o 
 
 4 
 
 
 
 
 '944 
 
 i3i'7 
 
 
 
 
 
 80 
 
 
 374 
 
 o-3g2 
 
 i5g"5 
 
 226-0 
 
 15-3 
 
 9 
 
 20 
 
 
 
 
 0-969 
 
 IIO'O 
 
 
 
 
 
 464 
 
 
 374 
 
 0-364 
 
 i55-2 
 
 224-2 
 
 i3'i 
 
 o 
 
 7 
 
 
 Oct. i 
 
 
 
 
 
 
 (276) 
 
 (1446) 
 
 (1164) 
 
 
 374 
 
 '449 
 
 1677 
 
 222-8 
 
 -i 8-3 
 
 o 
 
 6 
 
 
 
 
 
 
 
 
 
 
 
 
 374 
 
 o-5oi 
 
 162-3 
 
 223'7 
 
 22-2 
 
 
 
 3 
 
 
 274'8g6 
 
 36 7 
 
 o-go3 
 
 246-7 
 
 r5 
 
 i 8-6 
 
 
 
 123 
 
 
 
 376 
 
 0-766 
 
 66-6 
 
 ^84-1 
 
 4-21-8 
 
 i3 
 
 2 4 
 
 7 2 4/ 
 
 
 367 
 
 o-83o 
 
 23q-8 
 
 35i-3 
 
 20-5 
 
 80 
 
 4 35 
 
 
 
 376 
 
 o-gi4 
 
 74-3 
 
 171-9 
 
 4 1 6-9 
 
 o 
 
 59 
 
 62 p 
 
 
 368 
 
 0730 
 
 238-6 
 
 342-0 
 
 -17-4 
 
 16 
 
 164 
 
 
 Oct. 7 
 
 
 
 
 
 
 (37) 
 
 (219) 
 
 (i3i8) 
 
 
 368 
 
 0-698 
 
 234-0 
 
 338-0 
 
 18-9 
 
 i 
 
 H 
 
 
 
 
 
 
 
 
 
 
 
 
 36 g 
 
 0-646 
 
 2 3i-6 333-6 
 
 i 8' i 
 
 
 
 6 
 
 
 
 
 
 
 
 
 
 
 
 
 3 7 o 
 
 0-466 
 
 294-6 
 
 327-0 
 
 4- 1 6-8 
 
 63 
 
 349 
 
 
 28ro5i 
 
 
 0-876 
 
 320-7 
 
 
 
 
 
 402 
 
 
 370 
 
 0-397 
 
 3o2'g 
 
 322-0 
 
 + 18'5 
 
 o 
 
 10 
 
 
 
 3 7 2 
 
 o-g36 
 
 246-6 
 
 285-6 
 
 -'9'4 
 
 
 
 8 
 
 
 
 370 
 
 o-3 1 5 
 
 304-6 
 
 317-1 
 
 4-16-6 
 
 o 
 
 35 
 
 
 
 3 7 3 
 
 0-767 
 
 227-6 
 
 258-6 
 
 -26-8 
 
 o 
 
 8 
 
 
 Oct. 2 
 
 
 
 
 
 
 (1 60) 
 
 (n36) 
 
 
 
 373 
 
 .0737 
 
 223-0 
 
 269-7 
 
 -27-6 
 
 
 
 9 
 
 
 
 
 
 
 
 
 
 
 
 
 374 
 
 0-354 
 
 200-6 
 
 227-6 
 
 13'2 
 
 o 
 
 2 
 
 
 275-786 
 
 367 
 
 0-962 
 
 248-2 
 
 o-3 
 
 18-9 
 
 40 
 
 346 
 
 796 c 
 
 
 374 
 
 0-373 
 
 194-2 
 
 226-7 
 
 i5-o 
 
 o 
 
 7 
 
 
 
 367 
 
 0-941 
 
 243-g 
 
 355-1 
 
 -21-9 
 
 10 
 
 35 
 
 
 
 374 
 
 0-402 
 
 187-5 
 
 223-4 
 
 -17-2 
 
 
 
 5 
 
 
 
 367 
 
 
 243-6 ' 35 1 -4 
 
 21-2 
 
 125 
 
 49 
 
 
 
 376 
 
 o'6oo 
 
 60-2 
 
 I86-I 
 
 422-4 
 
 2 
 
 20 
 
 
 
 368 
 
 0-844 
 
 243-9 342-3 
 
 -17-9 
 
 44 
 
 228 
 
 
 
 376 
 
 o-6ig 
 
 62-3 
 
 184-3 
 
 4-21-7 
 
 I 
 
 12 
 
 
 
 368 
 
 0-822 
 
 243-4 33g-g 
 
 -17-5 
 
 6 
 
 24 
 
 
 
 376 
 
 0-644 
 
 68-4 
 
 i83-3 
 
 4-24-6 
 
 
 
 10 
 
 
 
 368 
 
 0-811 
 
 242-6 ; 338-6 
 
 177 
 
 
 
 7 
 
 
 
 377 
 
 o-qi6 
 
 62-1 
 
 164-1 
 
 + 28-0 
 
 
 
 IO 
 
 638 c 
 
 
 368 
 
 o'8og 
 
 240-1 ' 337-6 
 
 -19-5 
 
 5 
 
 9 
 
 
 
 
 0-821 
 
 i5ro 
 
 
 
 
 
 96 
 
 
 36g 
 
 0-738 
 
 235-1 329-6 
 
 2O'O 
 
 2 
 
 12 
 
 1073^0 
 
 Oct. 8 
 
 
 
 
 
 
 (3) 
 
 (90 
 
 (1262) 
 
 
 370 
 
 0-617 
 
 288-2 
 
 327-2 
 
 4-16-3 
 
 104 
 
 477 
 
 
 
 
 
 
 
 
 
 
 
 
 370 
 
 o'58g 
 
 286-0 
 
 326-4 
 
 + H7 
 
 5 
 
 16 
 
 
 
 
 
 
 
 
 
 
 
 
 370 
 
 o - 58q 
 
 290-9 324-8 
 
 4i7-5 
 
 9 
 
 3q 
 
 
 28r832 
 
 374 
 
 '43g 
 
 216-0 
 
 226-3 
 
 -.4-8 
 
 4 
 
 12 
 
 
 
 3 7 o 
 
 0-558 
 
 292-8 322-3 
 
 4-18-0 
 
 4 
 
 28 
 
 
 
 376 
 
 o-^SS 
 
 62-3 
 
 187-2 
 
 4-21-8 
 
 i3 
 
 3 4 
 
 
 
 370 
 
 o'4g8 
 
 289-7 3i8'7 
 
 + 1 5-3 
 
 18 
 
 IIO 
 
 
 
 3 7 5 
 
 0-488 
 
 52-2 
 
 1 85'3 
 
 -f-22-g 
 
 o 
 
 4 
 
 
 
 374 
 
 o-g2o 
 
 112-7 226-8 
 
 -17-9 
 
 
 
 9 
 
 
 
 3 7 5 
 
 0-491 
 
 54-9 
 
 184-4 
 
 4-2i-q 
 
 5 
 
 18 
 
 
 
 374 
 
 0-926 
 
 1 IO"2 220-4 
 
 i5-g 
 
 14 
 
 73 
 
 85oc 
 
 
 376 
 
 0-029 
 
 5o"4 
 
 183-3 
 
 + 26-1 
 
 7 
 
 35 
 
 
 Oct. 3* 
 
 
 
 
 
 
 (386) 
 
 (1902) 
 
 (2618) 
 
 Oct. g* 
 
 
 
 
 
 
 (29) 
 
 (io3) 
 
 
 276-768 
 
 36 7 
 
 0-982 
 
 247-0 
 
 352-3 
 
 2I'I 
 
 io3 
 
 687 
 
 7670 
 
 282-784 
 
 373 
 
 o'Sgg 
 
 236-3 
 
 204-0 
 
 -26-6 
 
 o 
 
 10 
 
 692 p 
 
 368 
 
 o'g35 
 
 248-0 342-3 
 
 18-0 
 
 42 ' 
 
 170 
 
 
 
 373 
 
 0-764 
 
 226-0 
 
 235'4 
 
 -27-2 
 
 3 
 
 12 
 
 
 36g 
 
 0-846 
 
 241-9 328-q 
 
 i 9-6 
 
 o 
 
 12 
 
 
 
 378 
 
 0-462 
 
 2 1 5-8 
 
 2i3-3 
 
 -i 5-6 
 
 4 
 
 ig 
 
 
 370 
 
 0-764 
 
 286-7 326-6 
 
 4-16-1 
 
 80 
 
 436 
 
 
 
 378 
 
 0-430 
 
 2oq-3 
 
 210-0 
 
 -i 6-0 
 
 
 
 12 
 
 
 3 74 
 
 0-826 
 
 114-3 226-6 
 
 i 5-8 
 
 8 
 
 34 
 
 462 sf 
 
 
 376 
 
 o-3 1 6 
 
 3ro 
 
 187-4 
 
 421-7 
 
 6 
 
 23 
 
 
 Oct. 4* 
 
 
 1 
 
 
 (233) 
 
 ( I2 3g) 
 
 (1219) 
 
 
 376 
 
 0-340 
 
 34-8 
 
 186-4 
 
 4-22-1 
 
 4 
 
 H 
 
 
 * Indian photo. The Areas of Spots and FacuUc are expressed in Millionths of the Sun's visible Hemisphere 
 
REDUCTION OF SOLAR PHOTOGHAPHS THROUGHOUT 1878-1881. 
 
 37 
 
 MI.ASIKES of POSITIONS and AREAS of SPOTS and FACCL.E upon the SUN'S DISK on PHOTOGRAPHS taken in the YEAH 1880 continued. 
 
 
 
 Dis- 
 
 
 HKI.IOI;KAIMIIC 
 
 SPOTS. 
 
 FACCL.E. 
 
 
 
 Dis- 
 
 
 HELIOOBAPHIC 
 
 SPOTS. 
 
 FAODLA. 
 
 
 No. of 
 
 tance 
 
 * 
 
 
 
 
 
 No. of 
 
 tiiuce 
 
 
 
 
 
 
 Mean 
 
 Solar 
 Time. 
 
 Group, 
 and 
 Letter 
 
 for 
 
 Spot. 
 
 from 
 Centre 
 in 
 term 
 of 
 
 Sun's 
 Radius. 
 
 rosition 
 Angle 
 from 
 Sun's 
 AxU. 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBRA 
 
 for each 
 
 SjlOt 
 
 (and for 
 Day). 
 
 Area of 
 WHOLE 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 (lean 
 
 Solar 
 Time. 
 
 Group, 
 and 
 Letter 
 for 
 Spot. 
 
 from 
 Centre 
 in 
 terms 
 of 
 Sun's 
 Radius. 
 
 1 OSltlOU 
 
 Angle 
 from 
 
 Sun's 
 Axis. 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBRA 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 WHOLE 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 1880. 
 
 
 
 
 
 
 
 o 
 
 
 
 
 1880. 
 
 
 
 o 
 
 o 
 
 o 
 
 
 
 
 8i d 784 
 
 37."i 0-349 
 
 38-o 
 
 184*1 
 
 4-21-g 
 
 2 
 
 6 
 
 
 288 d '749 
 
 
 0-919 
 
 29"9 
 
 
 
 
 
 245 
 
 
 37."i 0-38g 
 
 36-2 
 
 182-9 
 
 + 24-1 
 
 3 
 
 12 
 
 
 
 380 
 
 o-36o 
 
 25-8 
 
 log-O 
 
 4-24-3 
 
 3 
 
 15 
 
 
 
 ,i-.~i 0-408 
 
 3 4 -8 
 
 182-5 
 
 -25-4 
 
 2 
 
 7 
 
 
 
 38o 
 
 o'36q 
 
 28-4 
 
 107-8 
 
 4-24-4 
 
 
 
 4 
 
 
 
 375 0-412 
 
 38- 4 
 
 i8ri 
 
 4-247 
 
 4 
 
 i5 
 
 
 
 38o 
 
 0-523 
 
 5r6 
 
 92-4 
 
 4-23-g 
 
 3 4 
 
 168 
 
 
 Oct. 10* 
 
 
 
 
 
 (28) 
 
 (I3o) 
 
 (59*) 
 
 
 38o 
 
 0-540 
 
 56-i 
 
 go-o 
 
 4-22-4 
 
 3 
 
 9 
 
 
 
 
 
 
 
 
 
 
 
 38o 
 
 0-538 
 
 6o-3 
 
 89-1 
 
 4-20-3 
 
 
 
 7 
 
 
 283-g86 
 
 o-83i 
 
 270-7 
 
 
 
 
 
 970 
 
 
 38 1 
 
 0-822 
 
 67-8 
 
 64-3 
 
 4-21-4 
 
 16 
 
 68 
 
 
 
 373 o-go3 
 
 236-8 
 
 239-9 
 
 -26-4 
 
 
 
 5 
 
 
 
 38 1 
 
 0-889 
 
 68-9 
 
 56-2 
 
 4-21-3 
 
 , 4 
 
 22 
 
 638* 
 
 
 374 0-790 
 
 240-3 
 
 229-4 
 
 i 5-3 
 
 o 
 
 i5 
 
 
 Oct. 1 6* 
 
 
 
 
 
 
 (60) 
 
 (293) 
 
 (883) 
 
 
 378 o-6z5 
 
 235'2 
 
 213-7 
 
 15'8 
 
 6 
 
 29 
 
 
 
 
 
 
 
 
 
 
 
 
 878 o-585 
 
 232'7 
 
 210-3 
 
 i 5'5 
 
 
 
 16 
 
 
 289-788 
 
 
 0-964 
 
 29'"7 
 
 
 
 
 
 617 
 
 
 3 7 5 
 
 0-289 
 
 341-4 
 
 187-2 
 
 + 21-8 
 
 o 
 
 i3 
 
 
 
 38o 
 
 o-38 1 
 
 32-4 
 
 92-1 
 
 4-24-1 
 
 3 4 
 
 168 
 
 
 
 375 
 
 0-284 
 
 3 44"9 
 
 186-1 
 
 + 21-8 
 
 
 
 6 
 
 
 
 38 1 
 
 0-681 
 
 64-1 
 
 64-0 
 
 4-21-4 
 
 21 
 
 81 
 
 
 
 375 
 
 0-279 
 
 35 1 -7 
 
 184-0 
 
 4-21-9 
 
 o 
 
 3 
 
 
 Oct. 17* 
 
 
 
 
 
 
 (55) 
 
 (249) 
 
 (617) 
 
 
 375 
 
 0-374 
 
 3-6 
 
 180- 1 
 
 4-27-8 
 
 o 
 
 4 
 
 
 
 
 
 
 
 
 
 
 
 
 370 
 
 O'3 2 I 
 
 8-2 
 
 1787 
 
 4-24-4 
 
 5 
 
 25 
 
 
 2gro56 
 
 
 0-909 
 
 325-0 
 
 
 
 
 
 439 
 
 
 
 0-879 
 
 i5o-7 
 
 
 
 
 
 i5i 
 
 
 38o 
 
 o-38i 
 
 345-4 
 
 g3-2 
 
 4-22-8 
 
 o 
 
 3 
 
 
 
 
 0-949 
 
 94-2 
 
 
 
 
 
 264 
 
 
 38o 
 
 c'332 
 
 35o'4 
 
 gi-8 
 
 424-4 
 
 27 
 
 i33 
 
 
 Oct. 1 1 
 
 
 
 
 
 
 (") 
 
 (H6) 
 
 ( H 85) 
 
 
 38i 
 
 0-480 
 
 53-4 
 
 63-g 
 
 4-21-5 
 
 18 
 
 72 
 
 
 
 
 
 
 
 
 
 
 
 
 382 
 
 0-722 
 
 61-6 
 
 44-5 
 
 4-24-0 
 
 o 
 
 n 
 
 97 / 
 
 284-931 
 
 3 74 
 
 0-892 
 
 249-6 
 
 228-9 
 
 -1 5-2 
 
 i 
 
 26 
 
 916 sf 
 
 
 
 o'gSg 
 
 140-5 
 
 
 
 
 
 56 1 
 
 
 378 
 
 0-767 
 
 243-8 
 
 214-5 
 
 -i5 7 
 
 o 
 
 5 
 
 
 Oct. 18 
 
 
 
 
 
 
 (45) 
 
 (219) 
 
 (i>97) 
 
 
 379 
 
 0-722 
 
 307-9 
 
 210-4 
 
 -r-3o-8 
 
 
 
 4 
 
 125 np 
 
 
 
 
 
 
 
 
 
 
 
 3 79 
 
 0-714 
 
 307-1 
 
 2IO'O 
 
 4-29-9 
 
 o 
 
 5 
 
 
 
 
 
 
 
 
 
 
 
 
 375 
 
 0-402 
 
 3i5'7 
 
 186-7 
 
 4-22-3 
 
 2 
 
 16 
 
 
 291784 
 
 38o 
 
 0-388 
 
 327-4 
 
 9>'9 
 
 4-2f2 
 
 4 3 
 
 I 4 5 
 
 
 
 38o 
 
 0-966 
 
 67-6 
 
 9 3-I 
 
 + 23-1 
 
 3i 
 
 196 
 
 izogsp 
 
 
 38o 
 
 o-3o3 
 
 327-2 
 
 88-7 
 
 4-20'o 
 
 3 
 
 '9 
 
 
 Oct. 12 
 
 
 
 
 
 
 (^4) 
 
 (252) 
 
 (2260) 
 
 
 38o 
 
 0-287 
 
 326-4 
 
 88-3 
 
 4-ig-o 
 
 '4 
 
 3 4 
 
 
 
 
 
 
 
 
 
 
 
 
 38o 
 
 0-273 
 
 327-0 
 
 877 
 
 4-18-4 
 
 4 
 
 18 
 
 
 286-o56 
 
 
 0-848 
 
 326-8 
 
 
 
 
 
 3o3 
 
 
 38o 
 
 o-3o3 
 
 3i3'9 
 
 9''9 
 
 4-17-2 
 
 25 
 
 78 
 
 
 
 374 
 
 o-g85 
 
 252-8 
 
 23 1-9 
 
 1 5-8 
 
 o 
 
 49 
 
 
 
 38o 
 
 0'3 1 5 
 
 3ig-2 
 
 91-2 
 
 4-18-9 
 
 4 
 
 16 
 
 
 
 3 74 
 
 0-972 
 
 25o - q 
 
 227-8 
 
 16-9 
 
 
 
 4' 
 
 
 
 38 1 
 
 0-365 
 
 40-3 
 
 64-1 
 
 4-21-2 
 
 27 
 
 75 
 
 
 
 378 
 
 0-896 
 
 25o-o 
 
 214-7 
 
 i 5'o 
 
 o 
 
 29 
 
 
 
 382a 
 
 o-gg3 
 
 log- 8 
 
 358-0 
 
 18-9 
 
 
 
 161 
 
 
 
 078 
 
 0-869 
 
 250-4 
 
 2 1 1-5 13-8 
 
 o 
 
 22 
 
 1096 
 
 
 382a 
 
 o- 99 5 
 
 111-9 
 
 357-2 
 
 2TI 
 
 '9 
 
 302 
 
 793 */> 
 
 
 38o 
 
 0-881 
 
 667 
 
 92-81 + 23-2 
 
 46 
 
 '79 
 
 
 Oct. 19* 
 
 
 
 
 
 
 (i3 9 ) 
 
 (848) 
 
 (793) 
 
 
 38o 
 
 0-966 
 
 67-9 
 
 78-3 4-23-0 
 
 
 
 52 
 
 1466 c 
 
 
 
 
 
 
 
 
 
 
 Oct. i3 
 
 
 
 
 
 
 (46) 
 
 (372) 
 
 (2864) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 293-784 
 
 38o 
 
 0-686 
 
 291-5 
 
 94*4 
 
 4-18-4 
 
 62 
 
 3io 
 
 
 
 
 
 
 
 
 
 
 
 
 38o 
 
 0-623 
 
 296-0 
 
 88-7 
 
 4-20-0 
 
 i3 
 
 37 
 
 
 286-712 
 
 
 o- 9 5 9 
 
 244-6 
 
 
 
 
 
 49 
 
 
 38o 
 
 0-609 
 
 297-4 
 
 87-4 
 
 4-20-5 
 
 2 
 
 4 
 
 
 
 3 74 
 
 o-ggS 
 
 2DI-6 
 
 227-8 
 
 -17-6 
 
 "9 
 
 69 
 
 
 
 38o 
 
 o'5g6 
 
 296-6 
 
 86-6 
 
 4- 19'8 
 
 16 
 
 9 
 
 
 
 378 
 
 o-g52 
 
 25i-~ 
 
 21 5-o 
 
 1 5-4 
 
 18 
 
 4 5 
 
 
 
 38o 
 
 0-671 
 
 3oro 
 
 91-2 
 
 4-24-2 
 
 3i 
 
 125 
 
 
 
 378 0-928 
 
 252'3 
 
 21 ro 
 
 14-0 
 
 3 
 
 i5 
 
 547 c 
 
 
 3826 
 
 0-385 
 
 307-4 
 
 71-0 
 
 4-18-4 
 
 ii 
 
 45 
 
 
 
 38o 0-811 
 
 65-3 
 
 92-5 
 
 + 23-3 
 
 53 
 
 25 4 
 
 902 / 
 
 
 3824 
 
 0-355 
 
 3 1 3-3 
 
 68-1 
 
 4- 19-0 
 
 8 
 
 4 2 
 
 
 
 38o 0-917 
 
 67-9 
 
 78-9 
 
 4-22-6 
 
 
 
 20 
 
 
 
 38 1 
 
 o - 33 1 
 
 325-8 
 
 63-7 
 
 4-21-0 
 
 24 
 
 7 5 
 
 
 
 38o 
 
 0-919 
 
 66-9 
 
 787 
 
 4-23-5 
 
 5 
 
 i5 
 
 260 c 
 
 
 38 1 
 
 0-324 
 
 33o-o 
 
 62-3 
 
 4-21-4 
 
 2 
 
 10 
 
 
 
 38o 
 
 o - g3o 
 
 67-7 
 
 76-8 
 
 4-22-g 
 
 
 
 H 
 
 
 
 3820 
 
 0-857 
 
 I 1 6-2 
 
 358-0 
 
 -19-2 
 
 25 
 
 156 
 
 
 
 38 1 
 
 0-986 
 
 694 
 
 64-1 
 
 4-21-2 
 
 26 
 
 128 
 
 554* 
 
 
 3820 
 
 0-863 
 
 ng-3 
 
 358-2 
 
 22-0 
 
 37 
 
 240 
 
 8o3/- 
 
 Oct. 14* 
 
 
 
 
 
 
 ('24) 
 
 (56o) 
 
 ( 27 53) 
 
 Oct. 21* 
 
 
 
 
 
 
 (231) 
 
 (n5a) 
 
 (8o3) 
 
 287-697 
 
 
 0-992 
 
 253-5 
 
 
 
 
 
 806 
 
 294-790 
 
 38o 
 
 0-834 
 
 288-4 
 
 9 5-i 
 
 4-I8-I 
 
 55 
 
 2 4 5 
 
 
 
 38o 
 
 0-674 
 
 60-8 
 
 9^9 
 
 4-23-5 
 
 42 
 
 1 83 
 
 
 
 38o 0-766 
 
 293-0 
 
 8/7 
 
 4-20-7 
 
 
 
 9 
 
 
 
 38o 
 
 0-688 
 
 63-1 
 
 91-1 
 
 4-22-4 
 
 2 
 
 22 
 
 
 
 38o 0-804 
 
 296-5 
 
 9'9 
 
 4-24-2 
 
 20 
 
 66 
 
 
 
 38o 
 
 0-702 
 
 67-7 
 
 89-1 
 
 4-19-6 
 
 
 
 7 
 
 520/ 
 
 
 38o 0-745 
 
 292-5 
 
 85-q 
 
 4-20-1 
 
 I I 
 
 46 
 
 
 
 38 1 
 
 0-928 
 
 69-5 
 
 64-0 
 
 4-21-1 
 
 12 
 
 61 
 
 
 
 3826 0-571 
 
 295-1 71-g 
 
 4-18-3 
 
 28 
 
 i3o 
 
 
 
 38 1 
 
 0-968 
 
 69-6 
 
 56'2 
 
 4-21-1 
 
 O 
 
 25 
 
 6o3c 
 
 
 3S2/; o-55g 
 
 3oo - 2 
 
 70-0 
 
 4-207 
 
 
 
 i3 
 
 
 Oct. i5 
 
 
 
 
 
 
 (56) 
 
 (298) 
 
 (1929) 
 
 
 3826 0-525 
 
 296-9 
 
 68-4 
 
 4-18-2 
 
 I 
 
 7 
 
 
 * Indian photo. The Areas of Spots and Facul.-c are expressed in Millionths of the Sun's visible Hemisphere. 
 
38 
 
 KEDUCTION OF SOLAR PHOTOGRAPHS THROUGHOUT 1878-1881. 
 
 MEASURES of POSITIONS and AREAS of SPOTS and FACUL^E upon the SON'S DISK on PHOTOGRAPHS taken in the YEAR 1880 continued. 
 
 
 
 Dis- 
 
 
 HELJOGRAPHIC 
 
 SPOTS. 
 
 FACUL^S. 
 
 
 
 Dis- 
 
 
 HKLIOGRAPIIJC 
 
 SPOTS. 
 
 FACUL^:. 
 
 Mean 
 Solar 
 Time. 
 
 No. of 
 Group, 
 and 
 Letter 
 for 
 Spot. 
 
 tance 
 from 
 Centre 
 in 
 terms 
 of 
 Sun's 
 
 Position 
 Angle 
 from 
 
 Sun's 
 Axis. 
 
 
 
 
 Mean 
 Solar 
 Time. 
 
 No. of 
 Group, 
 and 
 Letter 
 for 
 Spot. 
 
 tance 
 from 
 Centre 
 in 
 terms 
 of 
 Sun's 
 
 Position 
 Angle 
 from 
 
 Sun's 
 Axis. 
 
 
 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBRA 
 for each 
 Spot 
 (and for 
 
 Area of 
 WHOLE 
 for each 
 Spot 
 (and for 
 
 Area for 
 each 
 Group 
 (and for 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBRA 
 for each 
 Spot 
 (and for 
 
 Area of 
 WHOLE 
 for each 
 Spot 
 (and for 
 
 Area for 
 each 
 Group 
 (and for 
 
 7~\ ,/v 
 
 
 
 Radius. 
 
 
 
 
 Day). 
 
 Day). 
 
 Day). 
 
 
 
 Radius. 
 
 
 
 
 Day). 
 
 Day). 
 
 Day). 
 
 1880. 
 
 
 
 o 
 
 o 
 
 o 
 
 
 
 
 1880. 
 
 
 
 o 
 
 o 
 
 o 
 
 
 
 
 294 d 79 
 
 3826 
 
 O'52I 
 
 3oo-o 
 
 6 7 -5 
 
 + '9'6 
 
 18 
 
 74 
 
 
 2gg d '8o5 
 
 3820 
 
 0-614 
 
 221-6 
 
 35g-i 
 
 23-2 
 
 3 
 
 12 
 
 
 
 38i 
 
 0-480 
 
 3o5'6 
 
 63-6 
 
 + 20-8 
 
 17 
 
 58 
 
 
 
 382a 
 
 0'58g 
 
 223-8 
 
 358-7 
 
 20'g 
 
 4 
 
 1 68 
 
 
 
 3820 
 
 0-729 
 
 122-4 
 
 358-5 
 
 -19-1 
 
 23 
 
 63 
 
 
 
 3820. 
 
 0-575 
 
 220-g 
 
 358'7 
 
 i g-3 
 
 5 
 
 '9 
 
 
 
 382a 
 
 0-708 
 
 123-1 
 
 356-4 
 
 20-7 
 
 o 
 
 >4 
 
 
 
 3820 1 
 
 0-447 
 
 227-4 
 
 352-6 
 
 -|3'2 
 
 8 
 
 26 
 
 
 
 382 
 
 o-;5l 
 
 125-g 
 
 358-1 
 
 22'2 
 
 46 
 
 208 
 
 
 
 3820 
 
 0-400 
 
 222-8 
 
 349-0 
 
 12-5 
 
 8 
 
 24 
 
 
 
 382a 
 
 0772 
 
 124-6 
 
 355-8 
 
 22'2 
 
 o 
 
 12 
 
 
 
 3826 
 
 o-5i8 
 
 75-O 
 
 302-5 
 
 + 11-6 
 
 2 
 
 1 1 
 
 
 
 382C 
 
 "947 
 
 74'7 
 
 327-3 
 
 + 16-1 
 
 o 
 
 40 
 
 35 1 M 
 
 
 
 0-948 
 
 64-3 
 
 
 
 
 
 98 
 
 Oct. 22* 
 
 
 
 
 
 
 (219) 
 
 (985) 
 
 (35 1) 
 
 Oct. 27* 
 
 
 
 
 
 
 (66) 
 
 (260) 
 
 (98) 
 
 2g5-679 
 
 38o 
 
 0-927 
 
 287-2 
 
 90-5 
 
 + 17-8 
 
 5o 
 
 296 
 
 
 300785 
 
 382 
 
 0-734 
 
 236- 7 
 
 0-7 
 
 20-4 
 
 3o 
 
 88 
 
 
 
 38o 
 
 o-goi 
 
 294-9 
 
 gro 
 
 + 24-5 
 
 5 
 
 3o 
 
 
 
 3820 
 
 0-714 
 
 255-7 
 
 358-8 
 
 20-1 
 
 4 
 
 24 
 
 
 
 38o 
 
 0-876 
 
 290-5 
 
 go'6 
 
 + 20-3 
 
 o 
 
 8 
 
 
 
 382a 
 
 0-708 
 
 234-6 
 
 357-9 
 
 20-6 
 
 ii 
 
 29 
 
 
 
 38o 
 
 o855 
 
 290-9 
 
 85-5 
 
 + 20-4 
 
 2 
 
 1 1 
 
 996 nf 
 
 
 3826 
 
 0-322 
 
 66-6 
 
 3o2'5 
 
 + M-6 
 
 5 
 
 25 
 
 
 
 3826 
 
 0-722 
 
 2go-7 
 
 72-5 
 
 + 18-3 
 
 5o 
 
 227 
 
 
 Oct. 28* 
 
 
 
 
 
 
 (So) 
 
 (i 66) 
 
 
 
 0826 
 
 0-687 
 
 291-6 
 
 69-6 
 
 + 18-4 
 
 
 
 10 
 
 
 
 
 
 
 
 
 
 
 
 
 3826 
 
 0-682 
 
 2 9 3'2 
 
 68-7 
 
 + ig-3 
 
 II 
 
 39 
 
 
 
 
 
 
 
 
 
 
 
 
 3826 
 
 0-661 
 
 2 94 -3 
 
 66-9 
 
 + '97 
 
 16 
 
 79 
 
 
 301785 
 
 382a 
 
 0-857 
 
 243-8 
 
 1-4 
 
 -ig-7 
 
 i5 
 
 42 
 
 219 c 
 
 
 38 1 
 
 0-628 
 
 
 63-6 
 
 + 21-1 
 
 1 I 
 
 25 
 
 
 
 382/1 0-524 
 
 2977 
 
 335-g 
 
 + 17-9 
 
 4 
 
 20 
 
 
 
 38i 
 
 0'6 I 2 
 
 2087 
 
 62-3 
 
 + 21-2 
 
 6 
 
 16 
 
 
 
 38 2/ 
 
 O'5O4 
 
 301-4 
 
 334-0 
 
 4-18-6 
 
 2 
 
 9 
 
 
 
 38i 
 
 o-5 9 4 
 
 3oo-8 
 
 6o-5 
 
 -T-2I-8 
 
 o 
 
 5 
 
 
 
 3826 
 
 0-107 
 
 6-5 
 
 3o6-i 
 
 -r-io-5 
 
 6 
 
 '9 
 
 
 
 382 
 
 o'6oo 
 
 136-5 
 
 o-g 
 
 21-2 
 
 2 
 
 ii 
 
 
 
 3826 
 
 0-126 
 
 14-8 
 
 304-9 
 
 -f 1 1-4 
 
 2 
 
 8 
 
 
 
 382 
 
 0-607 
 
 i3i-8 
 
 358-5 
 
 ig-5 
 
 i5 
 
 72 
 
 
 
 3826 
 
 0-142 
 
 287 
 
 302-8 
 
 4-H-6 
 
 10 
 
 29 
 
 
 
 382 
 
 0-638 
 
 134-9 
 
 357'g 
 
 -22-4 
 
 71 
 
 36o 
 
 
 Oct. 2 9 * 
 
 
 
 
 
 
 (3g) 
 
 ('27) 
 
 (219) 
 
 
 382a 
 
 0-664 
 
 
 35 7 -7 
 
 24-9 
 
 2 
 
 6 
 
 
 
 
 
 
 
 
 
 
 
 
 382c 
 
 0-865 
 
 74-6 
 
 327-5 
 
 + I5-8 
 
 4 
 
 17 
 
 260 / 
 
 
 
 
 
 
 
 
 
 
 
 
 0-865 
 
 1 1 g-3 
 
 
 
 
 
 542 
 
 3o3-o63 
 
 
 o'Sqg 
 
 244-3 
 
 
 
 
 
 455 
 
 Oct. 23* 
 
 
 
 
 
 
 (2 4 5) 
 
 (1212) 
 
 (1798) 
 
 
 383 
 
 0-862 
 
 i ig-5 
 
 235-8 
 
 22-6 
 
 o 
 
 40 
 
 6o3/ 
 
 
 
 
 
 
 
 
 
 
 
 
 0-961 
 
 108-2 
 
 
 
 
 
 277 
 
 296-783 
 
 38o 
 
 '9Qi 
 
 287-1 
 
 g6- 1 
 
 + 17-6 
 
 43 
 
 i5i 
 
 1781 nf 
 
 Oct. 3o 
 
 
 
 
 
 
 (o) 
 
 (40) 
 
 (i335) 
 
 
 0826 
 
 0-866 
 
 288-0 
 
 72-6 
 
 + 18-0 
 
 6g 
 
 336 
 
 
 
 
 
 
 
 
 
 
 
 
 3826 
 
 0-840 
 
 288-0 
 
 6q-6 
 
 + 17-8 
 
 o 
 
 20 
 
 
 
 
 
 
 
 
 
 
 
 
 3826 
 
 0-827 
 
 288-7 
 
 68-2 
 
 + 18-2 
 
 7 
 
 21 
 
 
 3o3'7 9 3 
 
 
 o-g58 
 
 246-0 
 
 
 
 
 
 1269 
 
 
 3826 
 
 0-334 
 
 290-5 
 
 68-6 
 
 + 19-7 
 
 4 
 
 16 
 
 
 
 385 
 
 0-752 
 
 117-1 
 
 236-0 
 
 -I7-0 
 
 9 
 
 21 
 
 
 
 3826 
 
 0-814 
 
 291-0 
 
 66-5 
 
 
 12 
 
 39 
 
 
 
 383 
 
 0-778 
 
 124-2 
 
 236-2 
 
 22-g 
 
 5 
 
 12 
 
 
 
 38 1 
 
 0-792 
 
 2g3-2 
 
 63-g 
 
 4-21-2 
 
 6 
 
 12 
 
 
 
 383 
 
 0-785 
 
 123-4 
 
 235-2 
 
 -22-6 
 
 18 
 
 35 
 
 401 / 
 
 
 38 1 
 
 0-770 
 
 2g3'2 
 
 62-7 
 
 + 2I-I 
 
 4 
 
 8 
 
 708 c 
 
 
 
 0-926 
 
 IIO'O 
 
 
 
 
 
 721 
 
 
 382a 
 
 0-473 
 
 155-3 
 
 0-7 
 
 20-6 
 
 2 
 
 9 
 
 
 Oct. 3i* 
 
 
 
 
 
 
 (32) 
 
 (68) 
 
 (23gi) 
 
 
 382 
 
 0-491 
 
 1 55- 1 
 
 O'O 
 
 21'5 
 
 5 
 
 '7 
 
 
 
 
 
 
 
 
 
 
 
 
 382 
 
 0-489 
 
 l52'2 
 
 358-7 
 
 207 
 
 3 
 
 5 
 
 
 
 
 
 
 
 
 
 
 
 
 3820 
 
 o-473 
 
 i5o-5 
 
 358-6 
 
 ig-5 
 
 26 
 
 72 
 
 
 304783 
 
 
 O'g32 
 
 243-6 
 
 
 
 
 
 014 
 
 
 3820 
 
 o-5 1 g 
 
 1 52 -4 
 
 357-8 
 
 22'5 
 
 5g 
 
 320 
 
 
 
 383a 
 
 0-864 
 
 2 9 2'7 
 
 326-1 
 
 + 21-6 
 
 
 
 3i 
 
 
 
 38 2C 
 
 0-717 
 
 72-3 
 
 3277 
 
 + 16-0 
 
 6 
 
 17 
 
 
 
 384 
 
 o-6cS 
 
 2 9 0'2 
 
 3o3'4 
 
 + 15'4 
 
 4 
 
 18 
 
 
 Oct. 24* 
 
 
 
 
 
 
 (246) 
 
 (1043) 
 
 (2489) 
 
 
 384 
 
 o-665 
 
 2 9 2' 4 
 
 3o2-g 
 
 + 1 6-6 
 
 2 
 
 10 
 
 
 
 
 
 
 
 
 
 
 
 
 384 
 
 o'5g2 
 
 2 9 O'9 
 
 302'2 
 
 + i5'6 
 
 '4 
 
 25 
 
 
 297-886 
 
 3826 
 38 1 
 
 o-g58 
 0-906 
 
 287-1 
 2gr5 
 
 72-1 
 63-o 
 
 + 177 
 4-21-5 
 
 78 
 o 
 
 263 
 H 
 
 logo/ 
 
 
 384 
 384 
 
 o'5g6 
 o-582 
 
 2g3-o 
 
 302-1 
 
 3oo-8 
 
 + 16-8 
 + 17-5 
 
 2 
 
 6 
 
 9 
 
 21 
 
 
 
 3820 
 
 0:437 
 0*413 
 
 182-4 
 i8o'5 
 
 35g~4 
 358-5 
 
 2TO 
 19-5 
 
 2 
 
 '4 
 
 7 
 46 
 
 
 
 384 
 
 384 
 
 o'56o 
 0-545 
 
 2g5- 4 
 292-6 
 
 299-2 
 298-7 
 
 + i7 - 4 
 + i5-6 
 
 
 2 
 
 4 
 9 
 
 
 
 3820 
 
 0-433 
 
 '797 
 
 358-2 
 
 20-8 
 
 8 
 
 3o 
 
 
 
 385 
 
 0-602 
 
 i25 - g 
 
 236-7 
 
 -17-1 
 
 2 
 
 16 
 
 
 Oct. 25* 
 
 3820 
 
 0-460 
 
 178-8 
 
 35 77 
 
 22-5 
 
 37 
 
 215 
 
 
 
 383 
 383 
 
 0-654 
 0-662 
 
 l32'0 
 
 236-0 
 
 235-2 
 
 22-8 
 22-7 
 
 2 
 6 
 
 6 
 '9 
 
 
 
 
 
 
 
 
 
 
 
 
 383 
 
 0-676 
 
 i3i-o 
 
 233-8 
 
 -22-8 
 
 2 
 
 i5 
 
 
 2g8'784 
 
 3820 
 
 o'ggo 
 0-457 
 
 287-8 
 206-0 
 
 71-4 
 358-6 
 
 H-iS-2 
 ig-6 
 
 47 
 g 
 
 '99 
 3i 
 
 1062 nf 
 
 
 3836 
 386 
 
 0-756 
 o-g36 
 
 io5-8 
 
 II2-2 
 
 220-0 
 201-0 
 
 -19-1 
 
 2 
 13 
 
 7 
 49 
 
 
 Oct. 26* 
 
 3820 
 
 0-488 
 
 203'I 
 
 358-3 
 
 22-0 
 
 32 
 
 (88) 
 
 t25 
 
 (355) 
 
 (1062) 
 
 Nov. i* 
 
 
 o-gn 
 
 ii 5-3 
 
 
 
 (57) 
 
 (23g) 
 
 643 
 ("57) 
 
 * Indian photo. The Areas of Spots and Faculas are expressed in MiUionths of the Sun's visible Hemisphere. 
 
RKDUCTION OF SOLAR PHOTOGRAPHS THROUGHOUT 1878-1881. 
 
 39 
 
 MK \SL-KKS of POSITIONS and AREAS of SPOTS and FACULJE upon the SUN'S DISK on PHOTOGRAPHS taken in the YEAH 1880 continued. 
 
 
 
 Dis- 
 
 
 UKI.IOOIIAPUIC 
 
 SPOTS. 
 
 FACUL^E. 
 
 
 
 Dis- 
 
 
 llri.MH.l: u-llir 
 
 SPOTS. 
 
 FAODL.E. 
 
 Mr:i!l 
 
 SoLn 
 
 Time. 
 
 No. of 
 iroup, 
 and 
 Letter 
 for 
 Spot. 
 
 tance 
 from 
 
 in 
 t<-rnis 
 of 
 Sun's 
 Radius. 
 
 Position 
 Angle 
 from 
 Sun's 
 Axis. 
 
 
 
 
 Mean 
 Solar 
 Time. 
 
 No. of 
 Group, 
 and 
 Letter 
 for 
 Spot. 
 
 taller 
 from 
 Centre 
 in 
 terms 
 of 
 Sun's 
 Radius. 
 
 Position 
 Angle 
 from 
 
 Sun's 
 Axis. 
 
 
 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBliA 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 WHOLE 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (;md for 
 Day). 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMHltA 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 WHOLE 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 1880. 
 
 
 
 o 
 
 o 
 
 o 
 
 
 
 
 1880. 
 
 
 
 o 
 
 o 
 
 o 
 
 
 
 
 3o5 d -978 
 
 
 O'ggi 
 
 25o-5 
 
 
 
 
 
 252 
 
 3n d -go4 
 
 
 O'gi5 
 
 25l'2 
 
 
 
 
 
 323 
 
 
 
 o-g53 
 
 288-2 
 
 
 
 
 
 3 7 2 
 
 
 38g 
 
 o-g72 
 
 238-5 
 
 245-4 
 
 29-6 
 
 
 
 '4 
 
 
 
 384 
 
 0-812 
 
 285-g 
 
 3o5'3 
 
 + l5'2 
 
 10 
 
 87 
 
 
 
 38g 
 
 0-968 
 
 23g-2 
 
 244-6 
 
 -287 
 
 o 
 
 16 
 
 544 nf 
 
 
 384 
 
 0-787 
 
 287-1 
 
 302-8 
 
 4-1 5-g 
 
 4 
 
 17 
 
 
 
 
 o-g53 
 
 6g-5 
 
 
 
 
 
 492 
 
 
 084 
 
 0-788 
 
 2gO-3 
 
 3o2'5 
 
 + 18-4 
 
 i5 
 
 3 4 
 
 
 Nov. 8 
 
 
 
 
 
 
 (o) 
 
 (3o) 
 
 (i35g) 
 
 
 38 4 
 
 0-778 
 
 288-6 
 
 3oi'7 
 
 + 16-9 
 
 
 
 21 
 
 
 
 
 
 
 
 
 
 
 
 
 38 4 
 
 0737 
 
 28g- 7 
 
 297 - 9 
 
 + 17-2 
 
 6 
 
 20 
 
 323 c 
 
 
 
 
 
 
 
 
 
 
 
 383 
 
 o-5i8 
 
 148-8 
 
 234-7 
 
 -22-4 
 
 
 
 '4 
 
 
 312-904 
 
 
 0-9^7 
 
 245-3 
 
 
 
 
 
 528 
 
 
 385 
 
 0-419 
 
 147-3 
 
 2 3 7 -g 
 
 -i 6-7 
 
 
 
 12 
 
 
 
 
 0-875 
 
 249'3 
 
 
 
 
 
 1 60 
 
 
 385 
 
 0-399 
 
 143-3 
 
 237-3 
 
 -14-7 
 
 
 
 i3 
 
 
 
 
 0-785 
 
 23g-2 
 
 
 
 
 
 208 
 
 
 385 
 
 0-427 
 
 145-6 
 
 237-0 
 
 -16-7 
 
 1 1 
 
 47 
 
 
 
 3go 
 
 0-483 
 
 124-0 
 
 i36-i 
 
 -127 
 
 o 
 
 ii 
 
 
 
 385 
 
 0-427 
 
 141-4 
 
 235'5 
 
 i 5-6 
 
 
 
 1 1 
 
 
 
 3gi 
 
 o*6g4 
 
 80-2 
 
 1 16-6 
 
 + 9'i 
 
 2 
 
 ii 
 
 
 
 385 
 
 0-448 
 
 140-7 
 
 234-4 
 
 16-4 
 
 o 
 
 18 
 
 
 
 
 0-889 
 
 69-3 
 
 
 
 
 
 768 
 
 
 385 
 
 0-459 
 
 i3g-g 
 
 233-6 
 
 -16-7 
 
 o 
 
 4 
 
 
 
 
 0-984 
 
 1 1 1-2 
 
 
 
 
 
 246 
 
 
 386 
 
 0-819 
 
 1 1 5-g 
 
 200-8 
 
 -18-4 
 
 4 
 
 21 
 
 584 c 
 
 Nov. g 
 
 
 
 
 
 
 (2) 
 
 (22) 
 
 (1910) 
 
 
 387 
 
 o-g3o 
 
 107-7 
 
 185-4 
 
 14-8 
 
 
 
 9 
 
 i56 */ 
 
 
 
 
 
 
 
 
 
 
 
 
 0-927 
 
 64-7 
 
 
 
 
 
 2o5 
 
 
 
 
 
 
 
 
 
 
 Nov. 2 
 
 
 
 
 
 
 (5o) 
 
 (328) 
 
 (1892) 
 
 3i6-783 
 
 
 0-941 
 
 2g5'3 
 
 
 
 
 
 274 
 
 
 
 
 
 
 
 
 
 
 
 3g2 
 
 0-812 
 
 66-1 
 
 56-6 
 
 + 20-9 
 
 3 
 
 24 
 
 
 
 
 
 
 
 
 
 
 
 
 3g2 
 
 0-844 
 
 66-3 
 
 53-2 
 
 + 21-4 
 
 12 
 
 40 
 
 33i c 
 
 3o6-g6g 
 
 
 0-819 
 
 296-0 
 
 
 
 
 
 96 
 
 Nov. 1 3* 
 
 
 
 
 
 
 (i5) 
 
 (64) 
 
 (6o5) 
 
 
 384 
 
 0-920 
 
 284-5 
 
 3o5'4 
 
 + 14-8 
 
 12 
 
 4 5 
 
 
 
 
 
 
 
 
 
 
 
 
 38 4 
 
 o-go5 
 
 286-5 
 
 3o3'i 
 
 + 16-6 
 
 
 
 4 
 
 58o c 
 
 
 
 
 
 
 
 
 
 
 
 384 
 
 0-883 
 
 287-9 
 
 3oo-i 
 
 + 17-6 
 
 O 
 
 10 
 
 
 317-844 
 
 3g2 
 
 0-657 
 
 5g-2 
 
 577 
 
 + 21-8 
 
 4i 
 
 114 
 
 
 
 38 4 
 
 0-818 
 
 284-5 
 
 293-0 
 
 + 14-1 
 
 
 
 9 
 
 
 
 3 9 2 
 
 o-683 
 
 59-7 
 
 55-6 
 
 + 22-2 
 
 21 
 
 64 
 
 366 c 
 
 
 385 
 
 o-36o 
 
 176-1 
 
 237-0 
 
 -17-1 
 
 16 
 
 40 
 
 
 
 3g2 
 
 0-711 
 
 6r3 
 
 52-g 
 
 4-21-g 
 
 7 
 
 4 2 
 
 
 
 385 
 
 0-384 
 
 170-2 
 
 234-5 
 
 18-2 
 
 o 
 
 5 
 
 
 
 3g2a 
 
 0-908 
 
 108-9 
 
 32-o 
 
 -i 5-8 
 
 o 
 
 7 
 
 367 
 
 
 385 
 
 0-371 
 
 164-9 
 
 232-7 
 
 17-0 
 
 7 
 
 52 
 
 
 Nov. 14* 
 
 
 
 
 
 
 (69) 
 
 (227) 
 
 ( 7 33) 
 
 
 386 
 
 0-698 
 
 122-2 
 
 200-0 
 
 -18-7 
 
 5 
 
 24 
 
 215/ 
 
 
 
 
 
 
 
 
 
 
 
 387 
 
 0-835 
 
 111-8 
 
 i85-o 
 
 -15-7 
 
 3 
 
 IO 
 
 68/ 
 
 
 
 
 
 
 
 
 
 
 
 
 0-846 
 
 62-3 
 
 
 
 
 
 176 
 
 3i 8-800 
 
 
 o-g22 
 
 296-7 
 
 
 
 
 
 2I 9 
 
 Nov. 3 
 
 
 
 
 
 
 (43) 
 
 ('99) 
 
 (u35) 
 
 
 3g2 
 
 0-523 
 
 5o*4 
 
 56-g 
 
 + 21-7 
 
 i5i 
 
 49' 
 
 
 
 
 
 
 
 
 
 
 
 
 3g2 
 
 0-567 
 
 53-5 
 
 53-2 
 
 + 21-9 
 
 19 
 
 57 
 
 
 
 
 
 
 
 
 
 
 
 
 
 o-go3 
 
 116-7 
 
 
 
 
 
 3 9 6 
 
 
 
 
 
 
 
 
 
 
 Nov. 1 5* 
 
 
 
 
 
 
 ('70 
 
 (5 4 8) 
 
 (6 1 5) 
 
 308-075 
 
 
 0-961 
 
 288-0 
 
 
 
 
 
 5 2 6 
 
 
 
 
 
 
 
 
 
 
 
 
 0-904 
 
 247-0 
 
 
 
 
 
 86 
 
 
 
 
 
 
 
 
 
 
 
 
 0-770 
 
 235'5 
 
 
 
 
 
 224 
 
 319-948 
 
 
 '94' 
 
 304-5 
 
 
 
 
 
 '79 
 
 
 385 
 
 0-421 
 
 2I2'I 
 
 237-3 
 
 -17-2 
 
 8 
 
 ''7 
 
 
 
 3g2 
 
 o-37g 
 
 26-3 
 
 57-0 
 
 + 22'2 
 
 68 
 
 419 
 
 
 
 385 
 
 0-404 
 
 210-3 
 
 236-1 
 
 -16-7 
 
 
 
 5 
 
 
 
 
 '94 I 
 
 114-5 
 
 
 
 
 
 1 4 3 
 
 
 385 
 
 0-415 
 
 208-9 
 
 235-g 
 
 -i 7 -5 
 
 
 
 7 
 
 
 Nov. 1 6 
 
 
 
 
 
 
 (68) 
 
 (419) 
 
 (322) 
 
 
 385 
 
 0-387 
 
 202-1 
 
 232-6 
 
 -17-2 
 
 8 
 
 20 
 
 
 
 
 
 
 
 
 
 
 
 
 385 
 
 o'3go 
 
 '997 
 
 231-7 
 
 -17-7 
 
 4 
 
 16 
 
 
 320-795 
 
 3g2 
 
 0-357 
 
 358-4 
 
 56-8 
 
 + 2rg 
 
 88 
 
 356 
 
 
 
 388 
 
 0-424 
 
 40-3 
 
 206-7 
 
 + 22-4 
 
 2 
 
 8 
 
 
 
 3g4 
 
 0-364 
 
 1 35-7 
 
 41-2 
 
 12-8 
 
 o 
 
 8 
 
 
 
 386 
 
 0-540 
 
 i3 4 - 4 
 
 I99-9 
 
 -18-7 
 
 7 
 
 21 
 
 "7*/ 
 
 
 394 
 
 0-368 
 
 I32-I 
 
 40-1 
 
 I2'l 
 
 7 
 
 25 
 
 
 
 387 
 
 0-686 
 
 117-9 
 
 1 85-o 
 
 -i5-8 
 
 o 
 
 5 
 
 
 
 394 
 
 0-411 
 
 i32-5 
 
 3;-8 
 
 -i3-8 
 
 26 
 
 53 
 
 
 
 
 0-714 
 
 58-2 
 
 
 
 
 
 213 
 
 Nov. 1 7* 
 
 
 
 
 
 
 (121) 
 
 (440 
 
 
 
 
 0-939 
 
 67-0 
 
 
 
 
 
 342 
 
 
 
 
 
 
 
 
 
 
 Nov. 4 
 
 
 
 
 
 
 (29) 
 
 (99) 
 
 (i5o8) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 321-576 
 
 3g2 
 
 o'3gg 
 
 33 r3 
 
 S6- 7 
 
 + 227 
 
 22 
 
 201 
 
 
 
 
 
 
 
 
 
 
 
 
 3g2 
 
 0-371 
 
 335-g 
 
 54-2 
 
 4-22-0 
 
 
 
 82 
 
 
 008-700 
 
 385 
 
 0*004 
 
 225-g 
 
 237-1 
 
 -17-1 
 
 4 
 
 20 
 
 
 
 3g3 
 
 0-278 
 
 22O-I 
 
 55 - 2 
 
 9-9 
 
 O 
 
 iq 
 
 
 
 385 
 
 0-457 
 
 2ig-5 
 
 232-5 
 
 -17-1 
 
 ii 
 
 28 
 
 
 
 3g3 
 
 0-232 
 
 21O-2 
 
 5i-6 
 
 9-2 
 
 O 
 
 J 
 
 47 
 
 
 
 385 
 
 0-454 
 
 217-3 
 
 23i-6 
 
 -i 7 -5 
 
 4 
 
 H 
 
 
 
 394 
 
 0-264 
 
 1 66-6 
 
 41-2 
 
 12-5 
 
 
 
 T/ 
 
 10 
 
 
 
 386 
 
 0-451 
 
 1477 
 
 20O-2 
 
 -187 
 
 7 
 
 '9 
 
 
 
 394 
 
 o-3 ii 
 
 i56-i 
 
 37-4 
 
 14-2 
 
 
 
 y 
 
 39 
 
 
 
 
 0-925 
 
 67-2 
 
 
 
 
 
 408 
 
 
 3 94 
 
 0'3 10 
 
 1 53-3 
 
 36-6 
 
 -i3'7 
 
 16 
 
 67 
 
 
 Nov. 5* 
 
 
 
 
 
 
 (22) 
 
 (90 
 
 (408) 
 
 Nov. i8f 
 
 
 
 
 
 
 (38) 
 
 (474) 
 
 
 * Indian photo. The Area- of Spots nnd Karuhr arc expressed in Millionths of the Sun's visible Hemisphere. t Melbourne photo. 
 
40 
 
 KEDUCTION OF SOLAR PHOTOGRAPHS THROUGHOUT 1878-1881. 
 
 MEASURES of POSITIONS and AREAS of SPOTS and FACUL^E upon the SUN'S DISK on PHOTOGRAPHS taken in the YEAR 1880 continued. 
 
 
 
 Die- 
 
 tance 
 
 
 HELIOGKAPHIC 
 
 SPOTS. 
 
 FACULJE. 
 
 
 
 Dis- 
 
 
 HKLIOGUAPIIIC 
 
 SPOTS. 
 
 FACULJS. 
 
 Mean 
 Solar 
 Time. 
 
 No. of 
 Group, 
 and 
 Letter 
 for 
 Spot. 
 
 from 
 Centre 
 in 
 terms 
 of 
 Sun's 
 Radius. 
 
 Position 
 Angle 
 from 
 Sun's 
 Axis. 
 
 
 
 
 Mean 
 Solar 
 Time. 
 
 No. of 
 Group, 
 and 
 Letter 
 for 
 Spot. 
 
 tance 
 from 
 Centre 
 in 
 terms 
 of 
 Sun's 
 Radius. 
 
 Position 
 Angle 
 from 
 Sun's 
 Axis. 
 
 
 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBRA 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 WHOLE 
 for each 
 Spot 
 ( and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBRA 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 WHOLE 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 1880. 
 
 
 
 o 
 
 
 
 o 
 
 
 
 
 1880. 
 
 
 
 o 
 
 
 
 o 
 
 
 
 
 323 d '045 
 
 
 0-962 
 
 265-2 
 
 
 
 
 
 125 
 
 32g d -0l5 
 
 ^97 
 
 0-817 
 
 64-8 
 
 255-6 
 
 + 21-2 
 
 122 
 
 700 
 
 
 
 
 0-920 
 
 290-2 
 
 
 
 
 
 263 
 
 
 3 97 
 
 0-877 
 
 65'i 
 
 248-8 
 
 + 22-3 
 
 76 
 
 538 
 
 732 C 
 
 
 
 0-854 
 
 242-3 
 
 
 
 
 
 
 136 
 
 
 3g8 
 
 o- 97 o 
 
 1 1 5-6 
 
 234-2 
 
 -24-4 
 
 
 
 20 
 
 53? */ 
 
 
 3g2 
 
 0-5/g 
 
 307-2 
 
 56-3 
 
 + 22-2 
 
 3 9 
 
 230 
 
 
 
 
 0-989 
 
 124-8 
 
 
 
 
 
 I8 7 
 
 
 3g3 
 
 0-554 
 
 247-6 
 
 57-8 
 
 IO'4 
 
 40 
 
 158 
 
 
 Nov. 25 
 
 
 
 
 
 
 (23g) 
 
 ('397) 
 
 (1684) 
 
 
 3g3 
 
 o'5 1 6 
 
 249-5 
 
 55-7 
 
 8-6 
 
 o 
 
 8 
 
 
 
 
 
 
 
 
 
 
 
 
 3 9 3 
 
 0-492 
 
 248-3 
 
 53-g 
 
 - 87 
 
 o 
 
 7 
 
 
 
 
 
 
 
 
 
 
 
 
 3 9 3 
 
 0-467 
 
 2 4 5-3 
 
 5i'9 
 
 - 9'4 
 
 8 
 
 142 
 
 
 329-682 
 
 3g6 
 
 0-597 
 
 123-4 
 
 267-5 
 
 1 8-1 
 
 H 
 
 35 
 
 
 
 3 94 . 
 
 0-379 
 
 229-2 
 
 43-0 
 
 -12-3 
 
 6 
 
 40 
 
 
 
 3g6 
 
 0-641 
 
 122-3 
 
 264-2 
 
 ig-o 
 
 2 
 
 10 
 
 
 
 394 
 
 0-329 
 
 2 1 6-5 
 
 38-i 
 
 -i 3-3 
 
 '7 
 
 96 
 
 
 
 ,'5g6 
 
 o-656 
 
 Ilg-5 
 
 262-3 
 
 -17-8 
 
 17 
 
 68 
 
 
 
 3 94 
 
 o-33o 
 
 2IO-I 
 
 36-3 
 
 14-5 
 
 o 
 
 17 
 
 
 
 397 
 
 0715 
 
 65-2 
 
 255-g 
 
 + I8-3 
 
 O 
 
 38 
 
 
 
 3g5 
 
 0729 
 
 62-9 
 
 3 4 2 7 
 
 + 20-8 
 
 o 
 
 6 
 
 
 
 3g7 
 
 0-733 
 
 65-4 
 
 254-5 
 
 + I8-5 
 
 O 
 
 16 
 
 
 
 
 0-781 
 
 63-5 
 
 
 
 
 
 78 
 
 
 3g7 
 
 0-732 
 
 61-2 
 
 255*6 
 
 + 21-4 
 
 126 
 
 7 5 4 
 
 
 
 
 0-843 
 
 54-7 
 
 
 
 
 
 9 
 
 
 3g; 
 
 o'/Si 
 
 65-i 
 
 253-o 
 
 + ig-2 
 
 o 
 
 7 
 
 
 
 
 0-354 
 
 Il3'2 
 
 
 
 
 
 167 
 
 
 3 9 7 
 
 0-786 
 
 6r6 
 
 2807 
 
 + 22-5 
 
 25 
 
 95 
 
 
 
 
 o'gi6 
 
 68-3 
 
 
 
 
 
 no 
 
 
 3g7 
 
 0-788 
 
 627 
 
 250'2 
 
 + 2i-g 
 
 33 
 
 164 
 
 
 Nov. 19 
 
 
 
 
 
 
 (no) 
 
 (704) 
 
 (969) 
 
 
 3 9 7 
 
 0798 
 
 64-2 
 
 249-8 
 
 + 2I-I 
 
 8 
 
 38 
 
 
 
 
 
 
 
 
 
 
 
 
 3g7 
 
 0-808 
 
 63-o 
 
 248-2 
 
 + 22-2 
 
 8 
 
 2g 
 
 
 
 
 
 
 
 
 
 
 
 
 3g7 
 
 0-808 
 
 63-6 
 
 248-0 
 
 + 217 
 
 II 
 
 26 
 
 
 324-068 
 
 
 0-941 
 
 245-5 
 
 
 
 
 
 202 
 
 
 3 97 
 
 0-798 
 
 667 
 
 248-3 
 
 + ig-2 
 
 3 
 
 21 
 
 
 
 
 o'go3 
 
 292-5 
 
 
 
 
 
 23g 
 
 
 397 
 
 0-823 
 
 64-7 
 
 246-2 
 
 + 21-3 
 
 49 
 
 228 
 
 
 
 392 
 
 0-723 
 
 299-2 
 
 55'9 
 
 + 22-0 
 
 23 
 
 238 
 
 25o c 
 
 
 3g7 
 
 0-819 
 
 66-8 
 
 246-2 
 
 + I9-5 
 
 3 
 
 i3 
 
 
 
 3g3 
 
 0-760 
 
 261-5 
 
 62-0 
 
 - 5-2 
 
 
 
 8 
 
 
 
 3 9 7 
 
 o-83i 
 
 66-5 
 
 244'9 
 
 + 20-1 
 
 3 
 
 20 
 
 709 c 
 
 
 3g3 
 
 0-727 
 
 254-1 
 
 58-2 
 
 IO'I 
 
 45 
 
 218 
 
 
 
 3g8 
 
 0-922 
 
 117-3 
 
 235'o 
 
 24-5 
 
 4 
 
 4 
 
 9240 
 
 
 3g3 
 
 o'65o 
 
 253-1 
 
 5z-i 
 
 - 9'5 
 
 27 
 
 i85 
 
 449 c 
 
 Nov. 26* 
 
 
 
 
 
 
 (3o6) 
 
 (1602) 
 
 (i633) 
 
 
 3 94 
 
 o-56 1 
 
 244-2 
 
 44-2 
 
 -12-5 
 
 12 
 
 28 
 
 
 
 
 
 
 
 
 
 
 
 
 394 
 
 0-483 
 
 237-8 
 
 3 7'9 
 
 -i3'i 
 
 33 
 
 io5 
 
 
 
 
 
 
 
 
 
 
 
 Nov. 20 
 
 
 
 
 
 
 (H) 
 
 (782) 
 
 (1140) 
 
 33ro52 
 
 3g5 
 
 0-907 
 
 293-2 
 
 344'3 
 
 + 21'4 
 
 o 
 
 9 
 
 428 n 
 
 
 
 
 
 
 
 
 
 
 
 3g5 
 
 0-866 
 
 294-2 
 
 338-8 
 
 + 21-3 
 
 o 
 
 6 
 
 
 
 
 
 
 
 
 
 
 
 
 3gg 
 
 0-864 
 
 243-6 
 
 33 7 - 4 
 
 21-9 
 
 
 
 i5 
 
 3l i c 
 
 325-884 
 
 3g2 
 
 0-924 
 
 293-2 
 
 55-2 
 
 + 22-O 
 
 61 
 
 242 
 
 680 c 
 
 
 3g6 
 
 o-36g 
 
 146-2 
 
 268-7 
 
 16-8 
 
 o 
 
 2 
 
 
 
 3g3 
 
 0-939 
 
 25g-3 
 
 58-2 
 
 - g-S 
 
 58 
 
 '79 
 
 
 
 3g6 
 
 0-388 
 
 145-2 
 
 267-6 
 
 -17-5 
 
 3 
 
 16 
 
 
 
 3g3 
 
 0-889 
 
 258'7 
 
 5o-g 
 
 - 9-2 
 
 20 
 
 95 
 
 1124.0 
 
 
 3g6 
 
 0-440 
 
 i36-o 
 
 262-4 
 
 -17-4 
 
 
 
 2 
 
 
 NOV. 2 2* 
 
 
 
 
 
 
 (I 4 8) 
 
 (5i6) 
 
 (1804) 
 
 
 397 
 
 0-455 
 
 43-2 
 
 261-7 
 
 + 20-3 
 
 o 
 
 10 
 
 
 
 
 
 
 
 
 
 
 
 
 397 
 
 0-489 
 
 52 7 
 
 257-0 
 
 + 18-1 
 
 4 
 
 19 
 
 
 
 
 
 
 
 
 
 
 
 
 ^97 
 
 o-5ig 
 
 49-3 
 
 256-2 
 
 4-20-6 
 
 io3 
 
 746 
 
 
 326-809 
 
 3g2 
 
 0*984 
 
 292-0 
 
 56-2 
 
 + 21-9 
 
 60 
 
 in 
 
 7'/ 
 
 
 397 
 
 o-5o5 
 
 53-7 
 
 255-8 
 
 + i8-3 
 
 o 
 
 12 
 
 
 
 3g3 
 
 0-989 
 
 260-2 
 
 57-8 
 
 - 9-5 
 
 41 
 
 2O5 
 
 
 
 397 
 
 0-514 
 
 55-] 
 
 204-8 
 
 + 18-0 
 
 3 
 
 25 
 
 
 
 3g3 
 
 0-968 
 
 260-3 
 
 5i- 7 
 
 - 9-0 
 
 24 
 
 73 
 
 16640 
 
 
 397 
 
 O-556 
 
 53-g 
 
 252'6 
 
 + 19-9 
 
 
 
 6 
 
 
 Nov. 23* 
 
 
 
 
 
 
 (125) 
 
 (38 9 ) 
 
 (i835) 
 
 
 397 
 
 o-556 
 
 56-i 
 
 252-O 
 
 + 18-9 
 
 
 
 10 
 
 
 
 
 
 
 
 
 
 
 
 
 397 
 
 0-602 
 
 53-5 
 
 249-7 
 
 + 21-8 
 
 II 
 
 37 
 
 
 
 
 
 
 
 
 
 
 
 
 397 
 
 0-6 1 5 
 
 55-2 
 
 248-3 
 
 -f-21'4 
 
 o 
 
 17 
 
 
 327-802 
 
 
 0-981 
 
 255-5 
 
 
 
 
 
 867 
 
 
 397 
 
 0-623 
 
 527 
 
 248-6 
 
 + 23-0 
 
 16 
 
 3g 
 
 
 
 3 9 6 
 
 o-85g 
 
 110-3 
 
 266-9 
 
 -i 6-5 
 
 3 
 
 tS 
 
 
 
 397 
 
 0-6 1 1 
 
 57'9 
 
 247-4 
 
 + 21-5 
 
 o 
 
 2 
 
 
 
 3g6 
 
 0-890 
 
 I I 0-2 
 
 263-0 
 
 17-2 
 
 7 
 
 3 1 
 
 
 
 397 
 
 o-635 
 
 54-0 
 
 247-3 
 
 + 22-7 
 
 5 
 
 28 
 
 
 
 397 
 
 o-g33 
 
 66- 7 
 
 206-3 
 
 + 22-2 
 
 60 
 
 248 
 
 
 
 397 
 
 0-646 
 
 56-4 
 
 245-8 
 
 + 2I-7 
 
 37 
 
 23 7 
 
 
 
 397 
 
 '948 
 
 68-8 
 
 253-4 
 
 + 20-5 
 
 58 
 
 266 
 
 
 
 397 
 
 0-668 
 
 57-5 
 
 243-8 
 
 + 21-8 
 
 3 
 
 27 
 
 
 
 3 97 
 
 o-g5z 
 
 67-0 
 
 252-8 
 
 + 22-3 
 
 
 
 60 
 
 
 
 3g8 
 
 0-785 
 
 I23'I 
 
 234-9 
 
 24-6 
 
 7 
 
 16 
 
 3l2 */ 
 
 
 ^97 
 
 o-g58 
 
 65-8 
 
 25i'7 
 
 + 23-5 
 
 5 4 
 
 23o 
 
 17270 
 
 Nov. 27 
 
 
 
 
 
 
 (192) 
 
 (1281) 
 
 (io5i) 
 
 
 3g7 
 
 0-970 
 
 67-7 
 
 248-6 
 
 + 22-O 
 
 7 5 
 
 270 
 
 
 
 
 
 
 
 
 
 
 
 Nov. 24* 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 331-784 
 
 
 0-945 
 
 2g2'8 
 
 
 
 
 
 566 
 
 329-015 
 
 3g5 
 396 
 
 0-623 
 0-696 
 
 3o2-g 
 117-4 
 
 341-7 
 267-6 
 
 + 20-8 
 
 -17-6 
 
 6 
 
 8 
 
 27 
 
 38 
 
 
 
 397 
 
 397 
 
 o-3go 
 0-406 
 
 33-1 
 34-6 
 
 208-3 
 257-I 
 
 + 19-8 
 
 + 20-3 
 
 '4 
 
 152 
 
 59 
 665 
 
 
 
 3 9 6 
 
 0739 
 
 1 1 6-0 
 
 263-7 
 
 '7*9 
 
 1 1 
 
 3 4 
 
 
 
 397 
 
 0-423 
 
 36-6 
 
 255'7 
 
 + 20-6 
 
 3i 
 
 g5 
 
 
 
 3g6 
 
 0742 
 
 u 3-8 
 
 263-0 
 
 16-4 
 
 10 
 
 25 
 
 
 
 397 
 
 0-435 
 
 38-7 
 
 254-5 
 
 + 20-6 
 
 5 
 
 29 
 
 
 
 3g6 
 
 0-764 
 
 114-4 
 
 262-1 
 
 -17-2 
 
 6 
 
 i5 
 
 228S/ 
 
 
 3 9 7 
 
 o - 5oo 
 
 44'4 
 
 24g-3 
 
 + 21-7 
 
 
 
 22 
 
 
 * Indian photo. The Areas of Spots and Faeulse are expressed in Millionths of the Sun's visible Hemisphere. 
 
REDUCTION OF SOLAR PHOTOGRAPHS THROUGHOUT 1878-1 88 1. 
 
 41 
 
 M I:\SURES of POSITION'S ami AKKVS of SPOTS and FACUI^E upon the Sun's DISK on PHOTOGRAPHS taken in the YEAK 1880 continued. 
 
 Dis- 
 
 lln.icMii: U'm. 
 
 SPOTS. 
 
 FACIII..*:. 
 
 
 
 Dis- 
 
 
 IlKi.ioGiiArmc 
 
 SPOTS. 
 
 FACUI..*:. 
 
 \i>. of 
 Mean Group. 
 
 Let 
 'Iini>'. for 
 Spot. 
 
 U1I1UC 
 
 from 
 
 Outre 
 in 
 
 !.-rm~ 
 of 
 Sun's 
 Radius. 
 
 Position 
 
 from 
 
 Sim"- 
 Axis. 
 
 
 
 
 Mean 
 Solar 
 Time. 
 
 No. of 
 Group, 
 and 
 Letter 
 for 
 Spot. 
 
 tance 
 from 
 Centre 
 in 
 
 terms 
 of 
 
 Sun's 
 Radius. 
 
 Position 
 Angle 
 from 
 SUM'S 
 Axis. 
 
 
 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 L'MJIRA 
 lor i aril 
 Spot 
 (and for 
 Day). 
 
 Area of 
 WHOLE 
 
 for each 
 Spot 
 
 (and for 
 Ila.M. 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBRA 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 Wlllil.K 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 1880. 
 
 
 
 
 
 o o 
 
 
 
 
 1880. 
 
 
 o 
 
 o 
 
 o 
 
 
 
 
 831*784 
 
 ^97 
 
 o-5 1 9 
 
 43'6 248-0 -L22-8 
 
 2O 
 
 60 
 
 
 337-1788 
 
 
 0-960 
 
 25i-5 
 
 
 
 
 
 288 
 
 397 O-.VH 
 
 45-7 247-0 -f2 2'6 
 
 o 
 
 55 
 
 
 
 4000 
 
 0-954 
 
 2 94'4 
 
 267-2 
 
 -t-23-2 
 
 
 
 i5 
 
 
 397 
 
 0-041 
 
 48-4 245-6 +21-8 
 
 65 
 
 1 85 
 
 
 
 ^97 
 
 o-go5 
 
 292-0 
 
 255-1 
 
 4-I9-8 
 
 83 
 
 504 
 
 1670 c 
 
 397 
 
 0-007 
 
 5i-6 240-0 4-2i'o 
 
 6 
 
 21 
 
 
 
 400 
 
 0-801 
 
 107-3 
 
 140-5 
 
 -i3- 7 
 
 3 
 
 26 
 
 
 3g8 
 
 0-674 
 
 128-8 236-4 24-1 
 
 2 
 
 i5 
 
 
 400 
 
 0-840 
 
 loS'g 
 
 136-2 
 
 -13-2 
 
 57 
 
 433 
 
 
 3g8 
 
 o'6g5 
 
 128-1 234-5 
 
 -24-6 
 
 
 
 6 
 
 
 400 
 
 0-864 
 
 i o6-3 
 
 1 33-7 
 
 l3-g 
 
 
 
 21 
 
 
 Nov. 28* 
 
 
 
 
 
 (2 9 5) 
 
 (1212) (566) 
 
 
 400 
 
 0-870 
 
 104-6 
 
 i33-o 
 
 12-5 
 
 3 
 
 3i 
 
 
 
 
 
 
 
 
 
 
 400 
 
 0-885 
 
 108-2 
 
 i3i-5 
 
 i5-g 
 
 
 
 3 
 
 
 
 
 
 
 
 
 
 
 400 
 
 0-908 
 
 108-4 
 
 128-5 
 
 16-0 
 
 4 
 
 i5 
 
 
 33 z '903 
 
 0-784 
 
 295-5 
 
 
 
 88 
 
 
 400 
 
 0-924 
 
 108-1 
 
 126-0 
 
 16'5 
 
 24 
 
 68 
 
 
 
 0-780 
 
 286-3 
 
 
 
 52 
 
 
 400 
 
 0-943 
 
 log- 2 
 
 123-0 
 
 18-0 
 
 
 
 9 
 
 
 
 3g7 0-299 
 
 355-7 257-9 
 
 -f-iS-i 
 
 2 
 
 23 
 
 
 400 
 
 0-944 
 
 107-1 
 
 122-6 
 
 16-0 
 
 18 
 
 69 
 
 1662 c 
 
 
 397 0-280 
 
 357-3 207-4 
 
 + 17-0 
 
 
 
 5 
 
 Dec. 4 
 
 
 
 
 
 
 (192) 
 
 ("94) 
 
 (362o) 
 
 
 3q7 0-333 
 
 o-i 256-5 
 
 4-20-2 
 
 161 
 
 688 
 
 
 
 
 
 
 
 
 
 
 397 0*324 
 
 g-i 253-5 
 
 + '9'4 
 
 c 
 
 6 
 
 
 
 
 
 
 
 
 
 
 397 o-3 44 
 
 1 1-5 252-4 
 
 4-20-4 
 
 3 
 
 13 
 
 
 
 
 
 
 
 
 
 
 397 o-38o 
 
 18-1 
 
 249-3 
 
 + 21-9 
 
 o 
 
 i5 
 
 339-687 | 4006! 0-340 
 
 27-1 
 
 107-9. + 17-5 
 
 o 
 
 5 4 
 
 
 397 0-390 
 
 2I'O 
 
 247-9 
 
 + 22-2 
 
 18 
 
 57 
 
 4006 o-3g5 
 
 34-3 
 
 i53'7 +18-8 
 
 24 
 
 84 
 
 
 397 0-406 
 
 22-6 
 
 246-9 
 
 + 227 
 
 6 
 
 2 9 
 
 
 400 o-55g 
 
 114-3 
 
 1 35-8 13-3 
 
 80 
 
 49 
 
 
 397 0-408 26-2 
 
 245-5 -1-22-2 
 
 43 146 
 
 
 
 400 
 
 0-6 1 1 
 
 ii3-o i32'o 
 
 -13-8 
 
 o 
 
 18 
 
 
 397 o'3q6 o2'I 
 
 243-7 4-20-3 
 
 o 
 
 7 
 
 
 
 400 
 
 0-629 
 
 1 1 3-o i3o'7 
 
 14'3 
 
 
 
 '4 
 
 
 3g8 o - o3z 
 
 I43-3 
 
 236-2 24-4 
 
 5 
 
 8 
 
 
 
 400 
 
 0-664 
 
 114-0 128-3 
 
 -i 5-7 
 
 
 
 39 
 
 
 
 0-744 
 
 62-7 
 
 
 
 
 58 
 
 
 400 
 
 0-688 
 
 ni'o 125-8 
 
 14-3 
 
 28 
 
 64 
 
 
 0-814 
 
 II7-8 
 
 
 
 
 4 5 
 
 
 400 
 
 0-747 
 
 114-8 121-81 18-3 
 
 12 
 
 35 
 
 63o c 
 
 0-874 
 
 I24-5 
 
 
 
 
 4' 
 
 
 
 o-g5o 
 
 128-4 
 
 
 
 
 53 7 
 
 0-898 
 
 l3z-o 
 
 
 
 
 119 
 
 Dec. 6 
 
 
 
 
 
 
 ('44) 
 
 (717) 
 
 (1.67) 
 
 Nov. 29 . 
 
 
 
 (238) 
 
 (997) 
 
 ( 4 o3) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 340-686 
 
 40or 
 
 0-861 
 
 2gr3 211-4 4- 1 8- 1 
 
 9 
 
 3o 
 
 
 333-988 o'qoq 
 
 285-2 
 
 
 
 
 53 
 
 
 4000 0-843 
 
 293-9 208-8 4- ig'g 
 
 1 1 
 
 4 
 
 7670 
 
 
 
 o-qoi 
 
 2 9 27 
 
 
 
 
 1 53 
 
 
 4Oo6 | o*3 1 o 
 
 338'4 160-8 +i6-5 
 
 
 
 16 
 
 
 3g7 0-406 
 
 326-1 
 
 256'2 +20-3 
 
 IOO 
 
 6,4 
 
 
 
 400^ o - 3o2 
 
 344-1 i58-g 4-16-6 
 
 II 
 
 26 
 
 
 397 0-358 
 
 328-5 
 
 253-6 +i8-3 
 
 I 
 
 1 1 
 
 
 
 4006 o-3o2 
 
 348-8 107-5+17-0 
 
 5 
 
 21 
 
 
 397 0-342 
 
 33 1 -4 
 
 252-2 4-I8-I 
 
 o 
 
 6 
 
 
 
 4006 0-328 
 
 0-4 i53'g + i8'g 
 
 16 
 
 62 
 
 
 397 o-35o 
 
 345-2 
 
 247-8 4-20-4 
 
 
 
 6 
 
 
 
 4006 o-363 
 
 r6 |53'4 +21-0 
 
 
 
 5 
 
 
 
 397 
 
 0-377 
 
 347'g 
 
 247-2 -r-22'2 
 
 8 
 
 3o 
 
 
 
 400^ o-3 8 g 
 
 i-5 
 
 1 53-4 +22'6 
 
 o 
 
 3 
 
 
 
 397 
 
 0-369 
 
 352-2 
 
 245-4 4-22'D 
 
 '4 
 
 4 3 
 
 
 400 0-384 
 
 128-0 i35-gi 13-8 
 
 84 
 
 552 
 
 
 
 397 0-335 
 
 304-6 
 
 244-2 4-20-1 o 
 
 6 
 
 
 
 400 
 
 o-o 1 9 
 
 118-9! 126-1 
 
 -147 
 
 23 
 
 5 4 
 
 
 
 397 o-366 
 
 356-2 
 
 243-8 4-22-0 5 
 
 10 
 
 
 
 400^ 
 
 0-702 
 
 114-5 112-3 
 
 16-8 
 
 2 
 
 7 
 
 
 
 397 0-421 
 
 o-o 
 
 242-3 
 
 + 25-5 
 
 i 
 
 12 
 
 
 
 
 0-891 
 
 i3i-8 
 
 
 
 
 658 
 
 
 0-927 
 
 5g-3 
 
 
 
 
 3g6 
 
 Dec. 7" 
 
 
 
 
 
 
 (i6O 
 
 (826) 
 
 (Hi5) 
 
 Nov. 3o 
 
 
 
 
 
 
 (129) ( 7 38) 
 
 (602) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 342-784 
 
 400 
 
 0-290 
 
 2l6'0 
 
 136-5 
 
 14-0 
 
 87 
 
 5g5 
 
 
 334-680 
 
 3g7 0-494 3ir5 
 
 256-2 
 
 4-19-6 
 
 99 
 
 600 
 
 
 
 
 0-921 
 
 1OO-2 
 
 
 
 
 
 687 
 
 
 397 0-471 3 1 g-3 
 
 252'4 
 
 + 21-4 
 
 o 
 
 18 
 
 
 Dec. 9* 
 
 
 
 
 
 
 (7) 
 
 (595) 
 
 (687) 
 
 
 3g7 0-428 327-3 
 
 247-5 -(-21-6 
 
 9 
 
 52 
 
 
 
 
 
 
 
 
 
 
 
 
 3g7 o - 4og 33o - 2 
 
 245-8 4-21-3 
 
 7 
 
 34 
 
 
 
 
 
 
 
 
 
 
 
 Due. i 
 
 
 
 
 
 
 (n5) 
 
 (704) 
 
 
 343-979 
 
 
 0-926 
 
 297-3 
 
 
 
 
 
 3io 
 
 
 
 
 
 
 
 
 
 
 
 
 0-740 
 
 297-2 
 
 
 
 
 
 255 
 
 
 
 
 
 
 
 
 
 
 
 
 0-767 
 
 234-0 
 
 
 
 
 
 88 
 
 
 
 
 
 
 
 
 
 
 
 400 
 
 0-488 
 
 242-0 
 
 i36-g 
 
 -i3-8 
 
 85 
 
 5i 7 
 
 
 336-685 
 
 397 
 
 0-792 2g5-6 
 
 256-: 4-2O'i 
 
 79 
 
 446 
 
 264 c 
 
 
 400 
 
 o-3g8 227-2 
 
 128-3 
 
 -16-2 
 
 
 
 8 
 
 
 400 0-942 104-3 
 
 137-3 13'3 82 
 
 401 
 
 
 
 400 o-36- 227-9 
 
 127-0 
 
 14-8 
 
 4 
 
 6 
 
 
 400 0-980 io5'3 
 
 127-3 io-i o 
 
 70 
 
 I2OI C 
 
 
 O-853 
 
 104-8 
 
 
 
 
 
 342 
 
 400 0-991 107-9 
 
 I25'2 
 
 18-7 o 
 
 100 
 
 
 
 
 0-920 
 
 60-0 
 
 
 
 
 
 062 
 
 Dec. 3* 
 
 
 
 
 
 
 (161) 
 
 (017) 
 
 (| 4 65) 
 
 Dec. 10 
 
 
 
 
 
 
 (8 9 ) 
 
 (53i) 
 
 (1901) 
 
 * Indian photo. The Areas of Spots and Faculso are expressed iu Millionths of the Sun's visible Hemisphere. 
 
 a 64893. 
 
42 
 
 REDUCTION OF SOLAR PHOTOGRAPHS THROGUHOUT 1878-1881. 
 
 MEASURES of POSITIONS and ABEAS of SPOTS and FACVLX upon the SUN'S DISK on PHOTOGRAPHS taken in the YEAU 1880 continued. 
 
 
 
 Dis- 
 
 
 HELIOGBAPIIIC 
 
 SPOTS. 
 
 FACULJE. 
 
 
 
 Dis- 
 
 
 HEJ.IOURAPIIIC SPOTS. 
 
 FACUL.K. 
 
 
 No. of 
 
 tance 
 from 
 
 . . 
 
 
 
 
 
 No. of 
 
 tance 
 f 
 
 . 
 
 
 
 Mean 
 Solar 
 Time. 
 
 Group, 
 and 
 Letter 
 for 
 
 Spot. 
 
 Centre 
 in 
 terms 
 of 
 Sun's 
 Radius. 
 
 . osition 
 Angle 
 from 
 Sun's 
 Axis. 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBRA 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 WHOLE 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 Mean 
 Solar 
 Time. 
 
 Group, 
 and 
 Letter 
 for 
 Spot. 
 
 irom 
 Centre 
 
 in 
 terms 
 of 
 
 Sun's 
 Radius. 
 
 Position 
 Angle 
 from 
 Sun's 
 Axis. 
 
 Longi- 
 tude. 
 
 Area of 
 T .. UM15RA 
 Lat1 ' for each 
 
 tude. /pot 
 (and for 
 Day). 
 
 Area of 
 WHOLE 
 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 1880. 
 
 
 
 o 
 
 o 
 
 
 
 
 
 
 1880. 
 
 
 
 
 
 
 
 
 
 
 
 
 3441-965 
 
 
 0-798 
 
 299-5 
 
 
 
 
 
 385 
 
 354 d -8gi 
 
 402 
 
 0-269 
 
 358-8 
 
 327-I 
 
 + I3-6 
 
 24 
 
 7 6 
 
 
 
 400 
 
 o-6g3 
 
 25r3 
 
 140-1 
 
 -12- 7 
 
 
 
 7 
 
 
 
 401 
 
 0-448 
 
 8-3 
 
 322'7 
 
 + 24-2 
 
 16 
 
 28 
 
 
 
 400 
 
 0-673 
 
 z5r2 
 
 138-3 
 
 i3-i 
 
 47 
 
 190 
 
 
 
 403 
 
 0-972 
 
 68-3 
 
 252'2 
 
 + 20-6 
 
 64 
 
 277 
 
 1058 c 
 
 
 400 
 
 o-652 
 
 264-3 
 
 l37'2 
 
 -10-7 
 
 
 
 29 
 
 292 c 
 
 Dec. 21* 
 
 
 
 
 
 
 (104) 
 
 (38 1) 
 
 (io58) 
 
 
 400 
 
 0*641 
 
 249-6 
 
 1 35- 7 
 
 -i 3-5 
 
 73 
 
 280 
 
 
 
 
 
 
 
 
 
 
 
 
 400 
 
 o-63o 
 
 252-5 
 
 135-3 
 
 -n-5 
 
 o 
 
 26 
 
 
 
 
 
 
 
 
 
 
 
 
 
 0-853 
 
 
 
 
 
 
 208 
 
 355-784 
 
 402 
 
 0-337 
 
 323-6 
 
 326-g 
 
 + I3-6 
 
 16 
 
 34 
 
 
 Dec. 1 1 
 
 
 
 
 
 
 (1 20) 
 
 (532) 
 
 (885) 
 
 
 401 
 
 0-408 
 
 346-1 
 
 322-0 
 
 + 24-2 
 
 9 
 
 24 
 
 
 
 
 
 
 
 
 
 
 
 
 400 
 
 0-923 
 
 66-4 
 
 25o-5 
 
 + 20-8 
 
 7 5 
 
 377 
 
 i5 9 6/ 
 
 345-775 
 
 
 0-936 
 
 291-3 
 
 
 
 
 670 
 
 Dec. 22* 
 
 
 
 
 
 
 (100) 
 
 (435) 
 
 (i5 9 6) 
 
 
 400 
 
 0-817 
 
 247-3 , i3g-6 
 
 18-9 
 
 3 
 
 8 
 
 
 
 
 
 
 
 
 
 
 
 
 400 
 
 0-793 
 
 253-6 i38-3 
 
 13-5 
 
 3o 
 
 126 
 
 
 
 
 
 
 
 
 
 
 
 
 400 
 
 0-780 
 
 253-1 137-0 
 
 -i3-6 
 
 7 
 
 61 
 
 
 356-gn 
 
 
 0-802 
 
 302-3 
 
 
 
 
 
 1 15 
 
 
 400 
 
 0-767 
 
 354-8 i36-o 
 
 I2'I 
 
 5 
 
 5o 
 
 
 
 401 
 
 o'56i 
 
 32r8 
 
 322-6 
 
 + 24-0 
 
 4 
 
 6 
 
 
 
 400 
 
 0-763 
 
 252-2 i35'3 
 
 14-0 
 
 4 3 
 
 202 
 
 
 
 401 
 
 0-552 
 
 3247 
 
 320-8 
 
 + 24-6 
 
 2 
 
 16 
 
 
 Dec. 12* 
 
 
 
 
 
 
 (88) 
 
 (447) 
 
 (670) 
 
 
 401 
 
 0-537 
 
 329-2 
 
 3i8-o 
 
 + 25-2 
 
 I 
 
 12 
 
 
 
 | 
 
 
 
 
 
 
 
 
 402 
 
 0-526 
 
 3oo-7 
 
 327-9 
 
 + I3-5 
 
 4 
 
 2O 
 
 
 346-824 
 
 
 o-g36 
 
 298-5 
 
 
 
 
 
 238 
 
 
 402 
 
 0-468 
 
 3o6"7 
 
 322-7 
 
 + 14-1 
 
 6 
 
 II 
 
 
 
 400 
 
 0-9 ii 
 
 255-2 
 
 1 38- 1 
 
 -i3'8 
 
 -?7 
 
 141 
 
 
 
 402 
 
 0-464 
 
 3o8-i 
 
 322-1 
 
 + 14-5 
 
 o 
 
 4 
 
 
 
 400 
 
 0*899 
 
 256-0 
 
 136-3 
 
 -12-4 
 
 10 
 
 5 9 
 
 !1 94 
 
 
 402 
 
 0-420 
 
 008-9 
 
 3l9'5 
 
 + i3-i 
 
 o 
 
 3 
 
 
 
 400 
 
 0-897 
 
 256-o 
 
 i36-3 
 
 i 3 - o 
 
 7 
 
 48 
 
 
 
 402 
 
 0-422 
 
 3io-g 
 
 3ig-i 
 
 + l3-g 
 
 3 
 
 9 
 
 
 
 400 
 
 0-888 
 
 254-2 
 
 i34' 9 
 
 -14-4 
 
 5 7 
 
 233 
 
 
 
 403 
 
 0-804 
 
 61-8 
 
 25o-g 
 
 + 20-8 
 
 69 
 
 3 4 1 
 
 2 9 3/ 
 
 Dec. 1 3* 
 
 
 
 
 
 
 (HI) 
 
 (481) 
 
 (I 4 32) 
 
 
 
 0-881 
 
 114-8 
 
 
 
 
 
 264 
 
 
 
 
 
 
 
 
 
 
 Dec. 23 
 
 
 
 
 
 
 (8 9 ) 
 
 (422) 
 
 (672) 
 
 349734 
 
 
 0-939 
 
 291-8 
 
 
 
 
 
 710 
 
 
 
 
 
 
 
 
 
 
 
 
 0-899 
 
 227-3 
 
 
 
 
 
 4 5 4 
 
 357-939 
 
 
 0-819 
 
 238'7 
 
 
 
 
 
 225 
 
 
 402 
 
 0-948 
 
 78-0 
 
 324-4 
 
 + I3-8 
 
 29 
 
 86 
 
 936 / 
 
 
 402 
 
 0-696 
 
 292-3 
 
 328-1 
 
 + 13-5 
 
 '4 
 
 26 
 
 
 Dec. 1 6* 
 
 
 
 
 
 
 (29) 
 
 (86) 
 
 (2100) 
 
 
 402 
 
 0-653 
 
 2g5'2 
 
 324-2 
 
 + 14*2 
 
 5 
 
 1 1 
 
 
 
 
 
 
 
 
 
 
 
 
 402 
 
 o-63i 
 
 2g5'i 
 
 322-6 
 
 + i3-5 
 
 2 
 
 8 
 
 
 
 
 
 
 
 
 
 
 
 
 402 
 
 0-608 
 
 2g5'i 
 
 32 ro 
 
 + 12-9 
 
 5 
 
 9 
 
 
 350-774 
 
 
 o-g53 
 
 23i-3 
 
 
 
 
 
 454 
 
 
 402 
 
 0-586 
 
 2 97 '4 
 
 3ig-o 
 
 + 13-6 
 
 12 
 
 65 
 
 
 
 402 
 
 0-856 
 
 73-2 
 
 323-8 
 
 + I3-6 
 
 24 
 
 68 
 
 480 / 
 
 
 401 
 
 0-679 
 
 3u-2 
 
 320-8 
 
 + 24-5 
 
 4 
 
 21 
 
 
 
 401 
 
 0-899 
 
 65-z 
 
 320-1 
 
 + 21-4 
 
 7 
 
 28 
 
 
 
 403 
 
 0-673 55'2 
 
 260-7 
 
 + 20-6 
 
 79 
 
 335 
 
 3o 7 / 
 
 
 401 
 
 0-9 1 5 
 
 64-9 
 
 317-9 
 
 -f-22'2 
 
 ii 
 
 49 
 
 IO2O C 
 
 
 
 0-776 j 117-6 
 
 
 
 
 
 240 
 
 
 401 
 
 0-929 
 
 62-6 
 
 3i6-i 
 
 + 247 
 
 8 
 
 33 
 
 
 Dec. 24 
 
 
 
 
 
 
 (0 
 
 (475) 
 
 (772) 
 
 Dec. 17* 
 
 
 
 
 
 
 (5) 
 
 (178) 
 
 (i 9 5 4 ) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 309-664 
 
 4O3 
 
 0*456 
 
 29-4 
 
 25o - 2 
 
 + 20-8 
 
 42 
 
 225 
 
 
 351779 
 
 402 
 
 0-715 
 
 68-7 
 
 324-8 
 
 + 13-8 
 
 22 
 
 44 
 
 
 Dec. 26* 
 
 
 
 
 
 (42) 
 
 (225) 
 
 
 
 401 
 
 0787 
 
 59-4 32o-g 
 
 + 22-5 
 
 5 
 
 22 
 
 
 
 
 
 
 
 
 
 
 
 
 401 
 
 0-795 
 
 5 9 -i 
 
 320-3 
 
 + 23-0 
 
 10 
 
 3o 
 
 
 360-779 
 
 
 o-g5i 
 
 284-4 
 
 
 
 
 
 1082 
 
 
 401 
 
 0-832 
 
 58-8 
 
 3 16-4 
 
 + 24-5 
 
 6 
 
 '9 
 
 23gc 
 
 
 403 
 
 0-400 
 
 35 7 -7 
 
 200-3 
 
 + 20-8 
 
 62 
 
 337 
 
 
 
 401 
 
 0-842 
 
 57-9 
 
 3i5-g 
 
 + 25-5 
 
 o 
 
 9 
 
 
 
 406 
 
 0-874 
 
 123-4 
 
 ig2'o 
 
 3o - i 
 
 57 
 
 246 
 
 
 
 401 
 
 0-847 
 
 5g'i 
 
 3 1 4-9 
 
 + 24-8 
 
 3 
 
 '4 
 
 
 
 406 
 
 o-g2o 
 
 121-8 
 
 184-8 
 
 3o'i 
 
 o 
 
 20 
 
 1 338 c 
 
 
 
 0-916 
 
 73-5 
 
 
 
 
 
 534 
 
 
 406 
 
 o-g3z 
 
 I 21'6 
 
 182-7 
 
 3o-3 
 
 4 
 
 5o 
 
 
 Dec. 1 8* 
 
 
 
 
 
 
 (46) 
 
 (138) 
 
 (773) 
 
 Dec. 27* 
 
 
 
 
 
 
 (123) 
 
 (653) 
 
 (2420) 
 
 352-682 
 
 402 
 
 0-564 
 
 6rg 
 
 325-3 
 
 + I3-8 
 
 '9 
 
 75 
 
 
 
 
 
 
 
 
 
 
 
 
 401 
 
 0-670 
 
 5o-8 
 
 321-6 
 
 + 23-6 
 
 '9 
 
 73 
 
 
 361-772 
 
 4o3 
 
 0-454 
 
 332-g 
 
 249-0 
 
 + 21'0 
 
 42 
 
 204 
 
 
 
 401 
 
 0-731 
 
 52'I 
 
 3i6-5 
 
 + 25-3 
 
 2 
 
 ii 
 
 
 
 406 
 
 0-771 
 
 129-2 
 
 193-2 
 
 -3ri 
 
 24 
 
 92 
 
 
 Dec. i g* 
 
 
 
 
 
 
 (40) 
 
 (i5g) 
 
 
 
 
 0-838 
 
 125-8 
 
 
 
 
 
 662 
 
 
 
 
 
 
 
 
 
 
 Dec.28f 
 
 
 
 
 
 
 (66) 
 
 (296) 
 
 (662) 
 
 353-687 
 
 402 
 
 o-3gi 
 
 47-6 
 
 325-5 
 
 + i3-5 
 
 )8 
 
 80 
 
 
 362-743 
 
 403 
 
 0-069 
 
 3i3-o 
 
 249-7 
 
 -I-20-I 
 
 56 
 
 263 
 
 
 
 401 
 
 0-541 
 
 07-1 
 
 321-g +23-8 
 
 18 
 
 88 
 
 
 
 406 
 
 0-664 
 
 135-6 
 
 190-9 
 
 00-7 
 
 35 
 
 io3 
 
 
 Dec. 20* 
 
 
 
 
 
 (36) 
 
 (i 68) 
 
 
 Dec. 29* 
 
 
 
 
 
 
 (95) 
 
 (366) 
 
 
 * Indian photo. The Areas of Spots and Facukc are expressed in Milliouths of the Sun's visible Hemisphere. t Melbourne photo. 
 
REDUCTION OF SOLAR PHOTOGRAPHS THUOUQHOUT 1878-1881. 
 
 43 
 
 MEASUUKS of POSITIONS and AREAS of SPOT* and FACri.,K upon the SUN'S DISK on PHOTOGRAPHS taken in the YEAR 1880 continual. 
 
 
 
 DU- 
 
 
 HKLIOGKAPIIIC 
 
 SPOTS. 
 
 FACIT-K. 
 
 
 
 Dis- 
 
 
 Hi i n M.I: vi -in.- 
 
 SPOTS. 
 
 KACUUB. 
 
 Mean 
 
 Solar 
 
 How. 
 
 No. of 
 
 Group 
 
 and 
 
 1. I'M IT 
 
 for 
 
 Spot. 
 
 ranee 
 from 
 Centra 
 in 
 t, THIS 
 of 
 Sun's 
 Radius. 
 
 1'ositiui 
 Angle 
 from 
 Sun's 
 Axis. 
 
 
 
 
 Mean 
 Solar 
 Time. 
 
 No. of 
 Group, 
 and 
 Letter 
 for 
 Spot. 
 
 tance 
 from 
 Centre 
 in 
 terms 
 of 
 Sun's 
 Radius. 
 
 Position 
 Angle 
 from 
 Sun's 
 Axis. 
 
 
 
 
 Longi- 
 tude. 
 
 lati- 
 tude. 
 
 Area of 
 DMBBA 
 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 \VUOLK 
 
 for eacli 
 
 Spot 
 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 
 Day). 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBRA 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 WHOLE 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 1880. 
 
 
 
 
 
 o 
 
 o 
 
 
 
 
 1881. 
 
 
 
 o 
 
 o 
 
 o 
 
 
 
 
 363''78 9 
 
 4O3 
 
 0-71 I 
 
 3o2'3 
 
 249'4 
 
 + 19-9 
 
 42 
 
 252 
 
 
 
 407 
 
 O'5 2 5 
 
 336-3 
 
 93-5 
 
 4-24-6 
 
 25 
 
 9' 
 
 
 
 4o5 
 
 0-253 
 
 171-6 
 
 207-6 
 
 -I7-5 
 
 2 
 
 18 
 
 
 
 407 
 
 0-520 
 
 340-7 
 
 gro 
 
 + 25-2 
 
 5l 
 
 207 
 
 
 
 400 
 
 0-270 
 
 171-5 
 
 207-4 
 
 18-5 
 
 3 
 
 16 
 
 
 Jan. 9* 
 
 
 
 
 
 
 (76) 
 
 (298) 
 
 
 ; 4 
 
 0-289 
 
 162-3 
 
 204-5 
 
 19-0 
 
 6 
 
 23 
 
 
 
 
 
 
 
 
 
 
 
 406 
 
 o'55o 
 
 '49'4 
 
 lgo'7 
 
 -3n 
 
 46 
 
 1 85 
 
 
 
 
 
 
 
 
 
 
 
 
 0-945 
 
 100-8 
 
 
 
 
 
 702 
 
 8716 
 
 407 
 
 0-636 
 
 3ig-i 
 
 g3-o 
 
 4-24'q 
 
 3o 
 
 80 
 
 
 Dec. 3o 
 
 
 
 
 
 
 (99) 
 
 (56o) 
 
 ( 7 02) 
 
 
 407 
 
 0-632 
 
 320-9 
 
 9''9 
 
 4-25-4 
 
 4 
 
 18 
 
 
 
 
 
 
 
 
 
 
 
 
 407 
 
 0-61 5 
 
 321-0 
 
 9'9 
 
 4- 24-6 
 
 8 
 
 27 
 
 
 
 
 
 
 
 
 
 
 
 
 407 
 
 0*622 
 
 323-7 
 
 89-9 
 
 + 26-1 
 
 69 
 
 
 
 360-078 404 
 
 0-378 
 
 228-7 
 
 210'0 
 
 -i 7 -5 
 
 47 
 
 139 
 
 
 Jan. 10* 
 
 
 
 
 
 
 (III) 
 
 (298) 
 
 
 
 404 
 
 0-374 
 
 224-9 
 
 208-8 
 
 18-4 
 
 
 
 q 
 
 
 
 
 
 
 
 
 
 
 
 
 400 
 
 0-342 
 
 219-8 
 
 206-0 
 
 i8-3 
 
 o 
 
 8 
 
 
 
 
 
 
 
 
 
 
 
 
 400 
 
 0-342 
 
 214-4 
 
 204-5 
 
 ig-5 
 
 46 
 
 123 
 
 
 9782 
 
 407 
 
 0-760 
 
 3o8'4 
 
 92-5 
 
 4-24-8 
 
 3i 
 
 "4 
 
 
 406 
 
 o- 47 g 
 
 175-6 
 
 190-2 
 
 3r6 
 
 3o 
 
 1 53 
 
 
 
 407 
 
 0-740 
 
 3ii- 7 
 
 89-5 
 
 + 25-9 
 
 46 1 60 
 
 
 ! 406 
 
 o- 4 go 
 
 171-2 
 
 '877 
 
 32-0 
 
 
 
 12 
 
 
 Jan, n* 
 
 
 
 
 
 
 (77) (274) 
 
 
 Dec. 3i 
 
 
 
 
 
 
 (123) 
 
 (444) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 10-783 
 
 407 
 
 0-849 
 
 3o3-3 
 
 9''4 
 
 + 25-0 
 
 23 
 
 58 
 
 
 36o"gg3 403 
 
 0-943 
 
 293-6 
 
 248-1 
 
 + 2o-g 
 
 3 4 
 
 214 
 
 
 
 407 
 
 o-83o 
 
 3o6 - o 
 
 88-4 
 
 + 26-2 
 
 28 
 
 1 13 
 
 1108 c 
 
 
 404 
 
 D'555 
 
 243-1 
 
 211-8 
 
 -17-4 
 
 27 
 
 116 
 
 
 Jan. 12* 
 
 
 
 
 
 
 (5i) 
 
 ('7') 
 
 (1108) 
 
 
 405 
 
 0-474 
 
 232-9 
 
 204-2 
 
 19-6 
 
 20 
 
 75 
 
 
 
 
 
 
 
 
 
 
 
 1881. 
 
 406 
 
 '49 5 
 
 196-2 
 
 188-0 
 
 3r5 
 
 35 
 
 / 
 
 7' 
 
 
 
 
 
 
 
 
 
 
 
 Jan. i 
 
 
 
 
 
 
 (116) 
 
 (476) 
 
 
 11776 
 
 407 
 
 0-941 
 
 297-8 
 
 91-2 
 
 4-24-2 
 
 9 
 
 68 
 
 
 
 
 
 
 
 
 
 
 
 
 407 
 
 0-924 
 
 3oo-o 
 
 87-8 
 
 + 25-4 
 
 44 
 
 132 
 
 19940 
 
 
 
 
 
 
 
 
 
 
 
 4070 
 
 o-856 
 
 3oi-o 
 
 78-4 
 
 4-23-3 
 
 o 
 
 42 
 
 
 i'7og 
 
 404 
 
 0-833 
 
 251-7 
 
 213-6 
 
 -17-1 
 
 56 
 
 244 
 
 
 Jan. 1 3* 
 
 
 
 
 
 
 (53) 
 
 (242) 
 
 ('994) 
 
 
 404 
 
 o- 7 8g 
 
 25o*4 
 
 2og-o 
 
 -17-5 
 
 5 
 
 20 
 
 1 161 c 
 
 
 
 
 
 
 
 
 
 
 
 405 
 
 0771 
 
 247'4 
 
 206-9 
 
 ig-5 
 
 o 
 
 34 
 
 
 
 
 
 
 
 
 
 
 
 
 400 
 406 
 
 074' 
 0-646 
 
 247-3 
 2227 
 
 204-1 
 188-7 
 
 ig-o 
 -3i-3 
 
 44 
 40 
 
 1 60 
 192 
 
 
 12778 
 
 407 
 407 
 
 o-g85 
 '977 
 
 295-2 
 297-2 
 
 89-2 
 86-2 
 
 4-23-8 
 4-25-3 
 
 '7 
 35 
 
 87 
 142 
 
 I2o6/ 
 
 
 47 
 
 0-928 
 
 6ro 
 
 94 '4 
 
 4-25-2 
 
 n5 
 
 44-5 
 
 '972/ 
 
 Jon. 14* 
 
 
 
 
 
 
 (52) 
 
 (229) 
 
 (1206) 
 
 Jan. 3* 
 
 
 
 
 
 
 (260) 
 
 (,o 9 5) 
 
 (3 1 33) 
 
 
 
 
 
 
 
 
 
 
 2-6;g 
 
 404 
 
 o-g3o 
 
 253-0 
 
 2 1 3-6 
 
 -17-1 
 
 46 
 
 262 
 
 
 13-787 
 Jan. 1 5* 
 
 
 o-g82 
 
 298-4 
 
 
 
 
 
 400 
 
 (400) 
 
 
 405 
 
 0-873 
 
 249'4 
 
 2o5-3 
 
 -'97 
 
 o 
 
 60 
 
 i5i5 c 
 
 
 
 
 
 
 
 
 
 
 
 406 
 
 o'Soo 
 
 249-8 
 
 203'2 
 
 -19-1 
 
 21 
 
 80 
 
 
 iS'765 
 
 408 
 
 0-476 
 
 320-0 
 
 35i-5 
 
 4-16-6 
 
 18 
 
 97 
 
 
 
 406 
 
 o- 7 5 9 
 
 23 1-4 
 
 188-8 
 
 -3o-8 
 
 52 
 
 1 65 
 
 
 
 408 
 
 0-465 
 
 328-8 
 
 3477 
 
 4-18-6 
 
 3o 
 
 n3 
 
 
 
 407 
 
 0-848 
 
 5;-2 
 
 93-5 
 
 4-25-1 
 
 no 
 
 55o 
 
 2 4 5g/ 
 
 
 49 
 
 0-403 
 
 22 9 '4 
 
 35i-g 
 
 -'9'9 
 
 '9 
 
 68 
 
 
 Jan. 4* 
 
 
 
 
 
 
 (229) 
 
 (1117) 
 
 (3974) 
 
 
 49 
 
 0-353 
 
 226-5 
 
 348-6 
 
 18-9 
 
 o 
 
 4' 
 
 
 
 
 
 
 
 
 
 
 
 
 49 
 
 0-573 
 
 ig-3 
 
 320-7 
 
 4-277 
 
 6 
 
 26 
 
 
 4-046 405 
 
 0-969 
 
 201-1 
 
 2o3'2 
 
 -19-2 
 
 
 
 5 4 
 
 i3g sp 
 
 Jan. 17* 
 
 
 
 
 
 
 (73) 
 
 (3*5) 
 
 
 406 
 
 0-901 
 
 237-2 
 
 189-1 
 
 3i-o 
 
 23 
 
 88 
 
 4o5 if 
 
 
 
 
 
 
 
 
 
 
 407 
 
 0-702 
 
 47-3 
 
 927 
 
 + 25-3 
 
 9 3 
 
 3qi 
 
 7 5osf 
 
 16-784 
 
 408 
 
 0-632 
 
 3o3'5 
 
 3527 
 
 + 16-1 
 
 o 
 
 109 
 
 
 Jan. 5 
 
 
 
 
 
 (116) 
 
 (533) 
 
 (1294) 
 
 
 408 
 
 o-5g3 
 
 3117 
 
 347-4 
 
 4-187 
 
 25 
 
 1 63 
 
 
 
 
 
 
 
 
 
 
 
 49 
 
 o-585 
 
 241-8 
 
 352-8 
 
 20-3 
 
 
 
 72 
 
 
 4-929 406 
 
 0-957 
 
 23g-o 
 
 188-0 
 
 -3o-7 
 
 '4 
 
 73 
 
 445 / 
 
 
 49 
 
 0-528 
 
 23g-8 
 
 348-5 
 
 ~'9'9 
 
 o 
 
 IOO 
 
 
 407 
 
 o-6o3 
 
 36-i 
 
 gz'6 
 
 4-25'O 
 
 9' 
 
 444 
 
 
 
 4og 
 
 0-548 
 
 356-8 
 
 321-6 
 
 + 28-0 
 
 
 
 37 
 
 
 407 o-582 
 
 38-4 
 
 92-6 , + 23 5 
 
 
 
 8 
 
 
 Jan. 18* 
 
 
 
 
 
 
 (25) 
 
 (481) 
 
 
 407 
 
 o-6o3 
 
 40-2 
 
 90-6 
 
 4-23-8 
 
 5 
 
 3o 
 
 65 7 / 
 
 
 
 
 
 
 
 
 
 
 
 0-962 
 
 64-7 
 
 
 
 
 
 I 4 5 
 
 17-886 
 
 
 o-q5i 
 
 2g5'8 
 
 
 
 
 
 689 
 
 Jan. 6 
 
 
 
 
 
 
 (no) 
 
 (555) 
 
 (247) 
 
 
 408 
 
 0-8 u 
 
 2 9 5-5 
 
 354-9 
 
 + i6'9 
 
 3 9 
 
 184 
 
 
 
 
 
 
 
 
 
 
 
 
 408 
 
 0-775 
 
 296-9 
 
 35i-2 
 
 4-16-9 
 
 2 
 
 61 
 
 
 5-992 
 
 0-982 
 
 23g-2 
 
 
 
 
 
 220 
 
 
 408 
 
 0-740 
 
 299'4 
 
 3 47 -5 
 
 4-I7-5 
 
 2 
 
 46 
 
 
 407 
 
 0-517 
 
 17-1 
 
 92-0 
 
 + 25-6 
 
 61 
 
 439 
 
 
 
 408 
 
 0-740 
 
 3o2-3 
 
 346-5 
 
 + '9'4 
 
 46 
 
 240 
 
 
 407 
 
 0-495 
 
 22-1 
 
 go-o 
 
 4-23-3 
 
 
 
 10 
 
 
 
 409 0-759 
 
 247-7 
 
 353-3 
 
 20'2 
 
 '4 
 
 47 
 
 
 
 0-902 
 
 60-3 
 
 
 
 
 
 240 
 
 
 409 0703 
 
 247-5 
 
 3 4 8-6 
 
 lg-8 
 
 9 
 
 104 
 
 
 Jan. 7 
 
 
 
 
 
 (61) 
 
 (449) 
 
 (460) 
 
 
 4100 o"558 
 
 335-g 
 
 3.97 
 
 4-25-5 
 
 
 
 20 
 
 
 * Indian plioto. The Areas of Spots and Facula; are expressed in Millionths of the Sun's risible Hemisphere. 
 
 F 2 
 
44 
 
 REDUCTION OF SOLAR PHOTOGRAPHS THROUGHOUT 1878-1881. 
 
 MEASURES of POSITIONS and AUKAS of SPOTS and FACUL.E upon the SUN'S DI-K on PHOTOG&APBC taken in the YEAU 1881 continued. 
 
 
 
 Dis- 
 
 
 HEI.IOORAPHIC 
 
 SPOTS. 
 
 FACUL.S:. 
 
 
 
 Dis- 
 
 
 HEUOGKAFHIC 
 
 SPOTS. FACUI^S. 
 
 Mean 
 Solar 
 Tims. 
 
 No. of 
 Group, 
 and 
 Letter 
 for 
 Spot. 
 
 tance 
 from 
 Centre 
 in 
 terms 
 of 
 Sun's 
 Radius. 
 
 Position 
 Angle 
 from 
 Sun's 
 Axis. 
 
 
 
 
 Mean 
 Solar 
 Time. 
 
 No. of 
 
 Group, 
 and 
 Letter 
 for 
 
 Spot. 
 
 tance 
 from 
 Centre 
 in 
 terms 
 of 
 Sun's 
 Radius. 
 
 Position 
 Angle 
 from 
 
 Sun's 
 Axis. 
 
 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBRA 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 WHOLE 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 DMBBA 
 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 WHOLE 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 1881. 
 
 
 
 
 
 o 
 
 o 
 
 
 
 
 l88l. 
 
 
 
 o 
 
 o 
 
 o 
 
 
 
 
 i7<'-886 
 
 4103 
 
 O-558 
 
 339-9 
 
 317-4 
 
 4-26-4 
 
 
 
 17 
 
 
 22 ll 786 
 
 
 0-961 
 
 261-1 
 
 
 
 
 
 1240 
 
 
 4100 
 
 o'565 
 
 343-5 
 
 3i5-5 
 
 4-27-5 
 
 o 
 
 17 
 
 
 
 410/y 
 
 0-348 
 
 127 
 
 236-1 
 
 + 14-1 
 
 
 
 33 
 
 
 
 410 
 
 o-3o8 
 
 210-8 
 
 3147 
 
 -20-4 
 
 o 
 
 i5 
 
 
 
 410<f 0-232 
 
 166-6 
 
 235-1 
 
 17-8 
 
 34 
 
 125 
 
 
 
 410 
 
 0-286 
 
 200'2 
 
 3i i-l 
 
 -20-7 
 
 2 
 
 16 
 
 
 
 410^? o - 3i2 
 
 146-9 
 
 23O'2 
 
 20-6 
 
 26 
 
 [ 1 2 
 
 
 
 410^ 
 
 '9 5 7 
 
 7 2-5 
 
 234-4 
 
 + i5-o 
 
 5 
 
 121 
 
 ii53 c 
 
 
 4ioe 
 
 o-qo3 
 
 1 1 3-g 
 
 I76-3 
 
 23-9 
 
 
 
 32 
 
 6g3 c 
 
 
 
 0-921 
 
 6l-2 
 
 
 
 
 
 58g 
 
 
 4106 
 
 o-g3o 
 
 1 15-5 
 
 I72-2 
 
 -25-7 
 
 
 
 5 9 
 
 
 Jan. 19* 
 
 
 
 
 
 
 (119) 
 
 (88 7 ) 
 
 (2 4 3i) 
 
 Jan. 24* 
 
 
 
 
 
 
 (59) 
 
 (36i) 
 
 (ig33) 
 
 18-821 
 
 408 
 
 0-919 
 
 2q2-O 
 
 356"o 
 
 4-17-8 
 
 23 
 
 I6 7 
 
 
 23-676 
 
 
 0-888 
 
 263-4 
 
 
 
 
 
 336 
 
 
 408 
 
 0-902 
 
 291-7 
 
 353-g 
 
 4-17-3 
 
 o 
 
 5o 
 
 
 
 4ioZ 
 
 0-356 
 
 336-6 237-1 
 
 4-13-4 
 
 8 
 
 28 
 
 
 
 408 
 
 0-876 
 
 293-4 
 
 35o'o 
 
 + 17-6 
 
 i3 
 
 70 
 
 
 
 4 1 of/ j 0-246 
 
 214-6 237-2 
 
 -i 7 -3 
 
 48 
 
 242 
 
 
 
 408 
 
 o-85o 
 
 2g5-l 
 
 3 4 6-6 
 
 4-iS-i 
 
 17 
 
 87 
 
 
 
 4iorf 0-261 
 
 206-4 235-6 
 
 19-2 
 
 
 
 6 
 
 
 
 408 
 
 0-862 
 
 296-7 
 
 346-0 
 
 4-20-1 
 
 59 
 
 264 
 
 
 
 4106? 0-219 
 
 199-8 233-2 
 
 -17-5 
 
 o 
 
 29 
 
 
 
 49 
 
 0-862 
 
 261-0 
 
 352-0 
 
 ig-o 
 
 o 
 
 73 
 
 
 
 4106? 0-228 
 
 189-7 : 23i-i 
 
 -187 
 
 18 
 
 48 
 
 
 
 49 
 
 0-827 
 
 260-3 
 
 048-0 
 
 -19-1 
 
 '4 
 
 38 
 
 
 
 4106? 0*249 
 
 1 85-5 23o-3 
 
 2O'O 
 
 o 
 
 3i 
 
 
 
 
 0-622 
 
 322-0 
 
 3i7'5 
 
 + 24-6 
 
 o 
 
 10 
 
 
 
 4106? 0-266 
 
 182-2 229-4 
 
 2 I ' I 
 
 32 97 
 
 
 
 4io 
 
 0-61 3 
 
 326-4 
 
 3 1 4-7 
 
 + 25-8 
 
 4 
 
 18 
 
 
 
 4106? 
 
 o'2gi 
 
 181-6 
 
 229-3 
 
 22-5 
 
 2 10 
 
 
 
 410 
 
 0-441 
 
 234-3 
 
 3i5'o 
 
 i 9-6 
 
 7 
 
 4 1 
 
 
 
 4106 
 
 o-8i3 
 
 114-8 
 
 I75-5 
 
 -23-3 
 
 o 27 
 
 
 
 410 
 
 0-422 
 
 23o-6 
 
 3 1 3 - o 
 
 20-4! 5 
 
 17 
 
 
 
 4ioe 
 
 o-83i 
 
 116-6 
 
 i73-7 
 
 24-3 
 
 O 25 
 
 56 1 sf 
 
 
 410 
 
 0-417 
 
 222-6 
 
 310-4 
 
 22-7 
 
 O ID 
 
 
 Jan. 26* 
 
 
 
 
 
 
 (108) (5 4 3) 
 
 (897) 
 
 
 410 
 
 0-404 
 
 23o - 7 
 
 3 12-0 
 
 -197 
 
 o 8 
 
 
 
 
 
 
 
 
 
 
 
 410 
 
 o-3gi 
 
 227-3 
 
 3io'5 
 
 20-2 
 
 
 
 8 
 
 
 
 
 
 
 
 
 
 
 
 4 loc 
 
 0-191 
 
 177-7 
 
 292-2 
 
 16-2 
 
 o 
 
 8 
 
 
 24-807 
 
 4100 
 
 0-447 
 
 242-8 
 
 238~4 
 
 -17-0 
 
 86 406 
 
 
 
 4100 
 
 0'203 
 
 169-8 
 
 290-6 
 
 -167 
 
 
 
 1 1 
 
 
 
 410^ 
 
 0-365 
 
 229-7 
 
 23o-g 
 
 ig-o 
 
 17 66 
 
 
 
 4106 
 
 o-85o 
 
 70-6 
 
 237-3 
 
 4-13-5 
 
 
 
 26 
 
 
 
 4106! 
 
 0-343 
 
 23 ro 
 
 23o-i 
 
 -17-9 
 
 o 7 
 
 
 
 4106 
 
 0-906 
 
 70-1 
 
 23o - g 
 
 4-15-5 
 
 o 
 
 22 
 
 99 c 
 
 
 4100 
 
 o'35o 
 
 227-2 
 
 229-6 
 
 -19-2 
 
 18 33 
 
 
 Jan. 20* 
 
 
 
 
 
 
 (142) 
 
 (933) 
 
 (99) 
 
 
 4106? 
 
 0-347 
 
 224-8 
 
 228-9 
 
 -19-7 
 
 16 
 
 3i 
 
 
 
 
 
 
 
 
 
 
 
 
 4100? 
 
 0-357 
 
 221-6 
 
 228-5 
 
 20-9 
 
 99 
 
 1 65 
 
 
 ig-g7o 
 
 
 0-818 
 
 2g3-o 
 
 
 
 
 
 161 
 
 
 4 ice? 
 
 0-372 
 
 2I7-3 
 
 228-0 
 
 -22-7 
 
 3 
 
 17 
 
 
 
 408 
 
 0-986 
 
 28g-8 
 
 355-0 
 
 4-18-3 
 
 126 
 
 36 4 
 
 
 
 4 10 / 
 
 0-416 
 
 025-I 
 
 228-1 
 
 4-14-4 
 
 o 
 
 H 
 
 
 
 408 o-g5o 
 
 291-8 
 
 346-0 
 
 4-18-8 
 
 9 
 
 77 
 
 3oo c 
 
 
 4 loe 
 
 0-671 
 
 120-3 
 
 174-6 
 
 -24-2 
 
 
 
 i5 
 
 
 
 408 
 
 0-961 
 
 294-2 
 
 346-8 
 
 H- 2 I -0 
 
 55 
 
 204 
 
 
 
 
 0-948 
 
 106-4 
 
 
 
 
 
 288 
 
 
 409 
 
 0-940 
 
 262-4 
 
 348-1 
 
 -18-4 
 
 5 
 
 25 
 
 232 C 
 
 Jan. 26* 
 
 
 
 
 
 
 (23g) 
 
 (738) 
 
 (288) 
 
 
 410 
 
 0-661 
 
 246-1 
 
 3i6'6 
 
 '9"4 
 
 10 
 
 4 
 
 
 
 
 
 
 
 
 
 
 
 
 410 
 
 0-694 
 
 242-1 
 
 3u-6 
 
 20-6 
 
 7 
 
 20 
 
 
 26-672 
 
 4106? 
 
 0'6 I 2 
 
 249-6 
 
 23g-2 
 
 -17-0 
 
 u3 
 
 464 
 
 
 
 4106 0697 
 
 64-6 
 
 237-6 
 
 4-13-3 
 
 
 
 21 
 
 
 
 4106? 
 
 0-594 
 
 253-2 
 
 238-3 
 
 14-6 
 
 o 
 
 6 
 
 
 
 410^ 0-734 
 
 64-3 
 
 234-6 
 
 + 14-6 
 
 o 
 
 17 
 
 
 
 4100 
 
 0-694 
 
 262-3 
 
 238-2 
 
 1 5-1 
 
 
 
 6 
 
 
 Jan. 21 
 
 
 
 
 
 (212) 
 
 ( 7 68) 1 (969) 
 
 
 4106? 
 
 0-679 
 
 246-4 
 
 236-1 
 
 18-8 2 
 
 6 
 
 
 
 
 
 
 
 
 
 
 
 4 1 oc? 
 
 o-56 1 
 
 248-2 
 
 235-3 
 
 i6-g 
 
 4 
 
 9 
 
 
 20-720 
 
 408 0-986 
 
 28g- 7 
 
 346-6 
 
 4-18-4 
 
 o 
 
 4 5 
 
 
 
 4106? 
 
 o - 5i5 
 
 238-6 
 
 230-4 
 
 -20-7 
 
 9 
 
 22 
 
 
 
 408 
 
 0-986 
 
 292-3 
 
 346-2 
 
 4-20-9 
 
 27 
 
 1 36 
 
 994 c 
 
 
 41 od 
 
 0-607 
 
 240-9 
 
 23o"4 
 
 ig-3 
 
 7 
 
 18 
 
 
 
 410 
 
 0-771 
 
 248-6 
 
 3I7-3 
 
 19-8 
 
 2 
 
 27 
 
 
 
 410*? 
 
 0-489 
 
 242-3 
 
 229-6 
 
 18-3 o 
 
 1 1 
 
 
 
 410 
 
 0-734 
 
 246-8 
 
 3i3'7 
 
 20'6 
 
 O 
 
 1 1 
 
 
 
 4106? 
 
 0-491 
 
 238-7 
 
 228-9 
 
 20-O ig 
 
 35 
 
 
 
 410 
 
 0-702 
 
 246-7 
 
 3io*8 20-7 
 
 6 
 
 19 
 
 
 
 4106? 
 
 0-491 
 
 235"3 
 
 228-1 
 
 2 1 "4 ! 5o 
 
 129 
 
 
 
 410^ 
 
 0-680 
 
 67-3 
 
 237-5 4-13-5 
 
 o 
 
 26 
 
 
 
 4 1 of 
 
 0-677 
 
 304-7 
 
 231-7 
 
 4-14-1 II 
 
 '9 
 
 
 
 410^ 
 
 0-621 
 
 5S-o 
 
 235-O 
 
 + 14-6 
 
 2 
 
 18 
 
 
 
 4iq/' 
 
 o"565 
 
 3o6-8 
 
 23o-3 
 
 4-14-6 6 
 
 16 
 
 
 
 4106 
 
 0-646 
 
 60-2 
 
 232-7 
 
 4- 14-2 
 
 O 
 
 22 
 
 
 
 4 10 / 
 
 0-536 
 
 3og-o 
 
 227-9 
 
 4-14-4 24 
 
 64 
 
 
 Jan. 22* 
 
 
 
 
 
 
 (37) 
 
 (04) 
 
 (994) 
 
 
 41 oe 
 
 0-588 
 
 127-1 
 
 171-3 
 
 26-71 
 
 4 
 
 
 
 
 
 
 - 
 
 
 
 
 
 
 410^ 
 
 0-602 
 
 127-6 
 
 170-6 
 
 26-4 
 
 8 
 
 10 
 
 
 2i-65g 
 
 
 o-g 17 
 
 3o3-6 
 
 
 
 
 
 767 
 
 Jan. 27* 
 
 
 
 
 
 
 (253) 
 
 (8 1 8) 
 
 
 
 410 
 
 0-883 
 
 260-8 
 
 317-4 
 
 -i g-5 
 
 
 
 16 
 
 800 c 
 
 
 
 
 
 
 
 
 
 
 
 4106 
 
 0-470 
 
 44'4 
 
 235'6 +14-4 
 
 
 
 42 
 
 
 26-676 
 
 4 i orf 
 
 0-786 
 
 262-3 
 
 240-8 
 
 -17-5 
 
 I 12 
 
 473 
 
 
 
 4iod 
 
 0-442 
 
 124-6 
 
 232-8 
 
 196 
 
 o 
 
 
 
 
 4106? 
 
 0-749 
 
 2 53*3 
 
 237-5 i6-3 
 
 
 
 37 
 
 
 
 4 1 oc? 
 
 0-461 
 
 121-9 
 
 23 1-0 
 
 19-1 
 
 7 
 
 17 
 
 
 
 4 loc? 
 
 0-734 
 
 253-g 
 
 236-2 16-8 
 
 2 
 
 '4 
 
 6170 
 
 
 
 0-849 
 
 111-9 
 
 
 
 
 
 552 
 
 
 4106? 
 
 0-716 
 
 25r5 
 
 234-5 117-3 
 
 9 
 
 22 
 
 
 
 
 0-987 
 
 114-4 
 
 
 
 
 
 655 
 
 
 4106? 
 
 0-676 
 
 244-7 
 
 23o'I 21-3 
 
 6 
 
 .29 
 
 
 Jan. 23* 
 
 
 
 
 
 (7) 
 
 (92) 
 
 (2824) 
 
 
 4106? 
 
 0-666 
 
 246-0 
 
 229-6 20-2 
 
 2 
 
 6 
 
 
 * Indian photo. The Areas of Spots and Faculae are expressed in Millionths of the Sun's visible Hemisphere. 
 
REDUCTION OF SOLAR PHOTOGRAPHS THROUGHOUT 1H78-1881. 
 
 45 
 
 Mi: \-rui;-< of POSITIONS and AUKAS of SPOTS and KA< rr..i: ujx)n the SUN'S DISK on PHOTOGRAPHS taken in the YKAB 1881 continued. 
 
 
 
 Dis- 
 
 
 HEI.IOOKAPIIIC 
 
 Si-iira. 
 
 VACUL.-K. 
 
 
 
 Dis- 
 
 
 HKI.IOOKAPUIC 
 
 SrOTS. 
 
 F.VCUL.K. 
 
 
 No. of 
 
 tance 
 
 
 
 
 No. of 
 
 tance 
 
 A. 
 
 . w^- 
 
 
 
 
 Mean 
 Solar 
 
 TilMr. 
 
 Group, 
 and 
 
 Letter 
 
 for 
 
 Spot. 
 
 from Position 
 t'entrv Angle 
 in from 
 tiTI)l-i SUM'S 
 of Axis. 
 SUM'S 
 
 Longi- 
 
 tuile. 
 
 I/iti- 
 tmlo. 
 
 Area of 
 UMBRA 
 
 for each 
 Spot 
 (and for 
 
 Area of 
 WHOLE 
 for each 
 Spot 
 (and for 
 
 Area for 
 each 
 Group 
 (and for 
 
 '^-..'v 
 
 M.'iui 
 Solar 
 Time. 
 
 Group, 
 and 
 Letter 
 for 
 Spot. 
 
 troui 
 Centre 
 in 
 terms 
 of 
 Sun's 
 
 ,'iisttnm 
 Angle 
 from 
 Sun's 
 Axis. 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBKA 
 for each 
 
 Spot 
 (and for 
 
 Area of 
 
 Will U.K. 
 for each 
 Spot 
 (and for 
 
 Area for 
 each 
 Group 
 
 (and ibr 
 
 flutA 
 
 
 Radios. 
 
 
 
 Day). 
 
 Day). 
 
 jjaj ). 
 
 
 
 Radius. 
 
 
 
 
 Day). 
 
 Day). 
 
 Day;. 
 
 1881. 
 
 
 
 
 
 o 
 
 o 
 
 
 
 
 1881. 
 
 
 
 
 
 
 
 o 
 
 
 
 
 26 d -67o 
 
 4 ioc/ o-658 
 
 245-0 
 
 228-8 
 
 20-8 
 
 8 
 
 12 
 
 
 29 d '952 
 
 4 I2 
 
 O-375 
 
 249'7 
 
 167-3 13'2 
 
 7 
 
 58 
 
 
 4io</ 
 
 0-64(3 
 
 242-9 
 
 227-4 
 
 21-8 
 
 32 
 
 101 
 
 287 c 
 
 
 4 I2 
 
 0-346 
 
 253-8 
 
 165-9 ' ii'3 
 
 
 
 2 
 
 
 
 4'/' 
 
 0'73o 
 
 295-3 
 
 23 rg ! + 1 3-8 
 
 20 
 
 32 
 
 
 
 412 
 
 o-35o 
 
 247-2 
 
 i65-5-i 3-8 
 
 
 
 3 
 
 
 
 4/ 
 
 0-678 
 
 298-5 
 
 227-1 4-14-2 
 
 27 
 
 57 
 
 
 
 4 I2 
 
 0-307 
 
 246-0 
 
 162-813-0 
 
 4 
 
 99 
 
 
 411 
 
 0-479 
 
 41-8 
 
 170*0 4-1 5'3 
 
 23 
 
 40 
 
 
 
 412 
 
 0-287 
 
 241-6 
 
 161-2 13'7 
 
 3i 
 
 i5g 
 
 
 
 411 
 
 0-493 
 
 42-9 
 
 169-0 
 
 + 15-6 
 
 o 
 
 25 
 
 
 
 4l3 
 
 o'Sig 
 
 112-2 
 
 1 16-2 16'6 
 
 12 
 
 56 
 
 
 
 411 
 
 O'5 1 
 
 47-0 
 
 166-7 
 
 4-14-8 
 
 27 
 
 68 
 
 
 
 414 
 
 0-636 
 
 io5-5 
 
 107-1 
 
 -14-5 
 
 O 
 
 8 
 
 
 
 413 
 
 0-967 
 
 io5'6 n3'2 
 
 -i 6-6 
 
 6 
 
 42 
 
 238 c 
 
 
 4 i5 
 
 0-981 
 
 69-3 
 
 70-5 
 
 4-18-8 
 
 21 
 
 92 
 
 U/ 
 
 
 0-933 
 
 i 18-9 
 
 
 
 
 
 763 
 
 
 
 0-907 
 
 06-0 
 
 
 
 
 
 382 
 
 JilD. 28* 
 
 
 
 
 
 (274) 
 
 (958) 
 
 (i go5) 
 
 Jan. 3i 
 
 
 
 
 
 
 ('97) 
 
 (>97) 
 
 (1902) 
 
 27-690 
 
 0-871 
 
 293-2 
 
 
 
 
 
 2499 
 
 30-787 
 
 
 0-934 
 
 25l'2 
 
 
 
 
 
 942 
 
 tied 
 
 0-912 
 
 253-0 
 
 242-3 
 
 18-0 
 
 168 
 
 56o 
 
 
 
 411 
 
 0-664 
 
 301-9 
 
 170-9 
 
 + i5-5 
 
 8 
 
 21 
 
 
 4.1 od 
 
 0-844 
 
 253-3 
 
 233-6 
 
 -i 7 -3 
 
 7 
 
 n5 
 
 i558c 
 
 
 411 
 
 0-643 
 
 3oro 
 
 169-7 
 
 + 14-2 
 
 3o 
 
 72 
 
 
 4 loc/ 
 
 0-790 
 
 247-1 
 
 227-3 
 
 -21-6 
 
 20 
 
 5o 
 
 
 
 411 
 
 o-63o 
 
 3oo'3 
 
 169-1 
 
 4-i3'4 
 
 2 
 
 4 
 
 
 4" 
 
 0-377 
 
 13-5 
 
 170-8 
 
 + 10-4 
 
 72 
 
 267 
 
 
 
 411 
 
 0-628 
 
 3or6 
 
 1 68-5 
 
 4-14' 
 
 4 
 
 18 
 
 
 
 411 
 
 O-366 
 
 20-5 
 
 168-4 
 
 4-14-1 
 
 8 3o 
 
 
 
 411 
 
 0-6 1 1 
 
 3o3'8 166-7 
 
 4-14-6 
 
 >9 
 
 64 
 
 
 
 4" 
 
 0-397 
 
 23-5 
 
 166-6 
 
 4-15-4 
 
 42 
 
 1 34 
 
 
 
 411 
 
 o-6i3 
 
 3o6'o 1 66- 1 
 
 + 15-8 
 
 4 
 
 10 
 
 
 
 412 
 
 0*190 
 
 129-0 
 
 167-3 
 
 12-8 
 
 7 
 
 55 
 
 
 
 412 
 
 0-584 
 
 257-5 
 
 170-7 
 
 -12-3 
 
 36 
 
 200 
 
 
 
 412 
 
 0-240 129-3 
 
 1 65-o 
 
 14-6 
 
 8 
 
 '4 
 
 
 
 412 
 
 o-563 256-8 
 
 169-2 
 
 -12-5 
 
 7 
 
 '9 
 
 
 
 412 
 
 o'2lq 120-8 
 
 164-9 
 
 12-3 
 
 2 
 
 8 
 
 
 
 412 
 
 0-557 255 '' 
 
 168-7 
 
 -13-4 
 
 
 
 7 
 
 
 
 412 
 
 O'245 12O'O 
 
 i63'5 
 
 12-8 
 
 2 9 
 
 64 
 
 
 
 412 
 
 0-525 252'3 
 
 166-2 
 
 I4'5 
 
 7 
 
 16 
 
 
 
 412 
 
 0-269 117-8 
 
 161-9 
 
 i3-o 
 
 8 
 
 '4 
 
 
 
 412 
 
 0-494 203-0 
 
 164*2 
 
 -i 37 
 
 5 
 
 12 
 
 
 
 4 i3 
 
 0-878 io5-i 
 
 1 14-3 
 
 -16-1 
 
 32 
 
 112 
 
 573 c 
 
 
 412 
 
 0-486 254-1 
 
 i63-8 
 
 -i3'i 
 
 2 
 
 7 
 
 
 
 414 
 
 0-920 io5-3 
 
 108-6 
 
 16-4 
 
 o 
 
 16 
 
 
 
 412 
 
 0-469 2 55' 2 
 
 162-7 
 
 -12-4 
 
 O 
 
 9 
 
 
 .lull. 29* 
 
 
 
 
 
 
 (423) 
 
 (I 44 3) 
 
 ( 4 63o) 
 
 
 412 
 
 0-468 z53-i 
 
 162-0 
 
 -i3-4 
 
 24 
 
 78 
 
 
 
 
 
 
 
 
 
 
 
 
 412 
 
 0-455 25o-5 
 
 161-4 
 
 -H-3 
 
 52 
 
 '99 
 
 
 28-693 
 
 
 0-920 289-5 
 
 
 
 
 
 i58i 
 
 
 4 i3 
 
 o-35 4 
 
 121-9 
 
 117-0 
 
 -i 6-6 
 
 i3 
 
 3i 
 
 
 
 4 1 od 
 
 0-975 202-3 
 
 241-1 
 
 -i 8-6 
 
 122 
 
 476 
 
 
 
 45 
 
 0-924 
 
 66-0 
 
 72-0 
 
 + 19-3 
 
 40 
 
 120 
 
 I032/ 
 
 
 41 od 
 
 o-g3o 2 53- 1 
 
 23i'7 
 
 -17-9 
 
 4 2 
 
 116 
 
 1718 c 
 
 Feb. 1* 
 
 
 
 
 
 
 (2 4 3) 
 
 (887) 
 
 (974) 
 
 
 41 od 
 
 0-921 252'2 
 
 230-4 
 
 -18-7 
 
 
 
 47 
 
 
 
 
 
 
 
 
 
 
 
 
 411 
 
 0-385 340-1 
 
 170-6 
 
 4- 1 5'3 
 
 80 
 
 334 
 
 
 32-788 
 
 
 0-889 
 
 290-9 
 
 
 
 
 
 i523 
 
 
 4" 
 
 o-36i 048-3 
 
 167-1 
 
 + H'6 
 
 58 
 
 215 
 
 
 
 412 
 
 0-888 
 
 25 9 -8 
 
 172-0 
 
 12-0 
 
 37 
 
 i5o 
 
 
 
 412 
 
 O'l 53 220'2 
 
 168-6 
 
 -12-7 
 
 44 
 
 122 
 
 
 
 412 
 
 0-807 
 
 257-1 
 
 162-9 
 
 -I4-I 
 
 3 
 
 8 
 
 
 
 412 
 
 o'i5o 207-8 
 
 166-9 
 
 i 3-6 
 
 44 
 
 i33 
 
 
 
 412 
 
 0-793 
 
 258-1 
 
 161-6 
 
 -i3'3 
 
 i3 
 
 7 
 
 i3o6 c 
 
 
 412 
 
 0-118 201-6 
 
 1 65-3 
 
 12-3 
 
 20 
 
 44 
 
 
 
 412 
 
 0-782 
 
 256-4 
 
 1 6o-5 
 
 14*6 
 
 32 
 
 123 
 
 
 
 412 
 
 0-147 ! 9 5 '9 
 
 165-2 
 
 -14-1 
 
 16 
 
 28 
 
 
 
 4 i3 
 
 o-23o 
 
 219-9 
 
 117-7 
 
 16-4 
 
 6 
 
 13 
 
 
 
 412 
 
 0-116 181-1 
 
 162-9 
 
 -12-5 
 
 47 
 
 129 
 
 
 
 41 5a 
 
 0-436 
 
 i86-5 
 
 I 12-2 
 
 3 1-9 
 
 
 
 7 
 
 
 
 412 
 
 0-145 174-9 
 
 162-0 
 
 14-3 
 
 3 4 
 
 59 
 
 
 
 4i5a 
 
 0-446 
 
 182-0 
 
 1 lO'O 
 
 -32-6 
 
 3 
 
 9 
 
 
 
 4i3 
 
 0-737 106-9 
 
 iio'6 
 
 -i 6-5 
 
 23 
 
 68 
 
 
 
 4i5 
 
 0-692 
 
 54-4 
 
 72-6 
 
 4-18-7 
 
 Bl 
 
 4 3 7 
 
 
 
 4i3 0-797 109-9 110-4 
 
 -19-4 
 
 3 
 
 i3 
 
 
 
 4 i5 
 
 0-728 
 
 07-3 
 
 68-8 
 
 4-18-4 
 
 2 
 
 7 
 
 
 
 414 o'8n 104-8 1 08-6 
 
 -164 
 
 3 
 
 i3 
 
 1091 c 
 
 
 4i5 
 
 o- 7 65 
 
 5 7 -5 
 
 65-8 
 
 4-I9-7 
 
 Bl 
 
 11 5 
 
 1049 c 
 
 
 
 0-777 '29' 
 
 
 
 
 684 
 
 
 4i5 
 
 0-791 
 
 57-9 
 
 63-4 
 
 4-20-5 
 
 3 
 
 10 
 
 
 
 
 0-919' 63-6 
 
 
 
 
 388 
 
 
 
 0-754 42-6 
 
 
 
 | 
 
 797 
 
 .Inn. 3o* 
 
 
 
 
 
 (536) 
 
 ('797) 
 
 (5 4 62) 
 
 Feb. 3* 
 
 
 i 
 
 
 
 oo 
 
 (io5o) 
 
 ( 4 6 7 5) 
 
 2g'q52 
 
 
 0-990 287-3 
 
 
 
 
 355 
 
 
 
 
 
 
 
 
 
 
 
 
 0-984 i 248-2 
 
 
 
 
 344 
 
 33-777 
 
 
 0-960 289-3 
 
 
 
 
 
 1723 
 
 
 
 o-g32 20 1 -o 
 
 
 
 
 244 
 
 
 412 
 
 0-969 209-8 
 
 172-1 
 
 -11-4 
 
 62 
 
 1 80 
 
 
 
 
 0-909 234-7 
 
 
 
 
 270 
 
 
 412 
 
 0-908 258-6 
 
 i6i-5 
 
 i3 - o 
 
 7 
 
 44 
 
 15340 
 
 
 
 0-801 248-0 
 
 
 
 
 216 
 
 
 412 
 
 0-901 257-4 
 
 i6o-5 
 
 14-1 
 
 36 
 
 100 
 
 
 
 411 
 
 0-532 ! 3 1 1-9 170-3 
 
 4- 1 5-2 
 
 24 
 
 1 85 
 
 
 
 4 i3 
 
 0-409 244-2 
 
 1 18-2 
 
 -16-2 
 
 5 
 
 i5 
 
 
 
 411 
 
 o-53i 3i5'z 169-1 
 
 + 16-4 
 
 
 
 i 
 
 
 
 4 i5 
 
 0-555 40-7 
 
 73-3 
 
 4-18-9 
 
 84 
 
 487 
 
 
 
 411 
 
 o-5o2 012-0 168-7 
 
 -l-i 3-g 
 
 2 
 
 26 
 
 
 
 4i5 
 
 o - 6 1 5 47-9 
 
 67-0 
 
 4-18-7 
 
 20 
 
 55 
 
 
 
 411 0-006 3 14-2 1 68- 1 
 
 -r-14'9 
 
 O 
 
 32 
 
 
 
 4 i5 
 
 o-65z 48-5 
 
 64-5 
 
 4-20-1 
 
 47 
 
 195 
 
 
 
 411 0-404 317-1 i66'5 
 
 4-10-4 
 
 "9 
 
 116 
 
 
 
 
 0-883 63-4 
 
 
 
 
 
 99 
 
 
 412 
 
 0-407 
 
 253-2 169-6 
 
 -12-4 
 
 67 
 
 260 
 
 
 Feb. 4 
 
 
 
 
 
 
 (261) 
 
 (076) 
 
 (3356) 
 
 * Indian >hoto. The Areas of Spots and Faculae are expressed in Millionths of the Sun's visible Hemisphere. 
 
REDUCTION OF SOLAR PHOTOGRAPHS THROUGHOUT 1878-1881. 
 
 MEASURES of POSITIONS and AREAS of SPOTS and FACUJUE upon the SUN'S DISK on PHOTOGRAPHS taken in the YEAR 1881 continued. 
 
 
 No. of 
 
 Dis- 
 tance 
 r __. 
 
 
 HKUOGRAPHIC 
 
 SPOTS. 
 
 FACULSE. 
 
 
 No. of 
 
 Dis- 
 tance 
 
 
 HKJ.IOGKAPIIIC 
 
 SPOTS. 
 
 FAI,I;I./K. 
 
 Mean 
 Solar 
 Time. 
 
 Group, 
 and 
 Letter 
 for 
 Spot. 
 
 irom 
 Centre 
 in 
 terms 
 of 
 Sun's 
 Radius. 
 
 Position 
 Angle 
 from 
 Sun's 
 Axis. 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBRA 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 WHOLE 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 Mean 
 
 Solar 
 Time. 
 
 Group, 
 and 
 Letter 
 for 
 Spot. 
 
 from 
 
 Centre 
 in 
 terms 
 of 
 Sun's 
 Radius. 
 
 Position 
 Angle 
 from 
 Sun's 
 Axis. 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBRA 
 for eiich 
 Spot 
 (and for 
 Day). 
 
 Area of 
 WHOLE 
 for eacli 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (iiinl for 
 Day). 
 
 1881. 
 
 
 
 
 
 c 
 
 
 
 
 
 
 1881. 
 
 
 
 o 
 
 o 
 
 o 
 
 
 
 
 34^-991 
 
 416 
 
 0-676 
 
 3i2-6 
 
 I 12-g 
 
 + 21-7 
 
 5 
 
 16 
 
 
 37 d -828 
 
 4'7 
 
 0-423 
 
 356"o 
 
 44-6 
 
 + 18-3 
 
 3 4 
 
 68 
 
 
 
 416 
 
 0-461 
 
 14-6 
 
 73-8 
 
 + '9'4 
 
 83 
 
 35q 
 
 
 
 4'7 
 
 0-414 
 
 35g-8 
 
 42-8 
 
 + 17-8 
 
 o 
 
 3 
 
 
 
 416 
 
 0-440 
 
 19-2 
 
 72-0 
 
 + 18-1 
 
 5 
 
 47 
 
 
 
 4'9 
 
 0-796 
 
 64-2 
 
 364-7 
 
 + 16-9 
 
 76 
 
 343 
 
 
 
 410 
 
 o'3gi 
 
 23-2 
 
 71-6 
 
 + 14-6 
 
 
 
 1 1 
 
 
 
 419 
 
 o'Sog 
 
 66-5 
 
 352-8 
 
 + 14-6 
 
 o 3g 
 
 "47/ 
 
 
 4 i5 
 
 0-461 
 
 26-I 
 
 68-4 
 
 + 18-1 
 
 o 
 
 5 
 
 
 Feb. 8* 
 
 
 
 
 
 
 (320) 
 
 (i33 9 ) 
 
 (358o) 
 
 
 4 i5 
 
 0-496 
 
 28-9 
 
 66-0 
 
 + IQ-3 
 
 o 
 
 53 
 
 
 
 
 
 
 
 
 
 
 
 
 4i5 
 
 o-536 
 
 2 9 -3 
 
 64-3 
 
 + 21-6 
 
 o 
 
 8 
 
 
 38-946 
 
 
 o-g66 
 
 236-3 
 
 
 
 
 
 200 
 
 
 416 
 
 o-53o 
 
 32-1 
 
 63-3 
 
 + 20-4 
 
 41 
 
 1 35 
 
 
 
 
 0-886 
 
 3o5'7 
 
 
 
 
 
 3oo 
 
 Feb. 5 
 
 
 
 
 
 
 OH) 
 
 (633) 
 
 
 
 416 
 
 0-786 
 
 3oo-3 
 
 73-4 
 
 + 18-7 
 
 go 
 
 408 
 
 364 c 
 
 
 
 
 
 
 
 
 
 
 
 416 
 
 0-684 
 
 3oq-2 
 
 62-0 
 
 + 2O-I 
 
 
 
 7 
 
 462 np 
 
 
 
 
 
 
 
 
 
 
 
 417 
 
 o'4qo 
 
 327-3 
 
 4 3-8 
 
 + I7-9 
 
 10 
 
 64 
 
 
 35-668 
 
 416 
 
 0-777 
 
 004-4 
 
 1 14-3 
 
 + 21-4 
 
 7 
 
 12 
 
 
 
 417 
 
 0-432 
 
 334-8 
 
 38-8 
 
 + 16-4 
 
 o 
 
 23 
 
 
 
 4i5 
 
 '43g 
 
 353'3 
 
 74-0 
 
 + 19-2 
 
 57 
 
 321 
 
 
 
 418 
 
 '46g 
 
 34q-5 
 
 33-o 
 
 + 20-7 
 
 6 
 
 '7 
 
 
 
 4 i5 
 
 0-410 
 
 356"o 
 
 72-6 
 
 -H/-9 
 
 9 
 
 26 
 
 
 
 419 
 
 0-647 
 
 55-8 
 
 364-1 
 
 + i5-8 
 
 59 
 
 271 
 
 55g/ 
 
 
 4i5 
 
 0-424 
 
 358-0 
 
 71-8 
 
 + 18-4 
 
 o 
 
 3 
 
 
 
 420 
 
 0-809 
 
 62-0 
 
 33g-3 
 
 + '7'9 
 
 
 
 12 
 
 '4/ 
 
 
 416 
 
 0*435 
 
 358-5 
 
 71-6 
 
 + ig-2 
 
 
 
 3 
 
 
 
 421 
 
 0-924 
 
 108-8 
 
 3ig-6 
 
 19-8 
 
 o 
 
 9 
 
 497 c 
 
 
 415 
 
 0-418 
 
 0-8 
 
 70-6 +18-1 
 
 o 
 
 2 
 
 
 
 
 0-924 
 
 
 
 
 
 
 341 
 
 
 416 
 
 0-408 
 
 2"! 
 
 70-0 + 17-5 
 
 10 
 
 '9 
 
 
 Feb. 9 
 
 
 
 
 
 
 (.65) 
 
 (801) 
 
 (28 4 3) 
 
 
 416 
 
 0-447 
 
 l3'l 
 
 64-81+19-3 
 
 3 
 
 19 
 
 
 
 
 
 
 
 
 
 
 
 
 416 
 
 0-480 
 
 I2- 9 
 
 64-3 
 
 + 21-4 
 
 o 4 
 
 
 40-046 
 
 416 
 
 0-902 
 
 294<a 
 
 7 3'2 
 
 + 18-4 
 
 4' 
 
 3 7 i 
 
 
 
 4 i5 
 
 0-467 
 
 1 6-3 
 
 62-9 
 
 + 20-1 
 
 33 128 
 
 
 
 4'7 
 
 0-63 1 
 
 3og-6 
 
 43-9 
 
 + '7'9 
 
 ii 
 
 36 
 
 
 
 4'7 
 
 o'6io 
 
 47 -8 
 
 42-6 
 
 + 18-4 
 
 o 8 
 
 
 
 418 
 
 0-583 
 
 32 1-4 
 
 36-i 
 
 + 20-8 
 
 10 
 
 19 
 
 
 
 47 
 
 o'6 10 
 
 49-2 
 
 42-0 
 
 + 177 
 
 8 10 
 
 W 
 
 
 418 
 
 0-536 
 
 328-5 
 
 3o-6 
 
 + 20-7 
 
 o 
 
 5 
 
 
 
 4'9 
 
 0-980 
 
 72-0 
 
 355-0 
 
 + 16-2 
 
 77 
 
 346 
 
 1498 c 
 
 
 419 
 
 '499 
 
 40-9 ' 353-5 
 
 + i5' 7 
 
 58 
 
 269 
 
 
 
 
 0-902 
 
 109-4 
 
 
 
 
 
 179 
 
 Feb. 10 
 
 
 
 
 
 
 (120) 
 
 (700) 
 
 
 
 
 0-908 
 
 120-4 
 
 
 
 
 
 220 
 
 
 
 
 
 
 
 
 
 
 Feb. 6* 
 
 
 
 
 
 
 (204) 
 
 (90 
 
 (2 47 5) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 40-626 
 
 416 
 
 0-947 
 
 292-3 
 
 73-0 
 
 + 18-6 
 
 7' 
 
 238 
 
 
 
 
 
 
 
 
 
 
 
 
 4'7 
 
 0-716 
 
 3o3'8 
 
 44-2 
 
 -f 18-2 
 
 29 
 
 q5 
 
 
 36778 
 
 416 
 
 0-912 
 
 297-5 
 
 1 16-7 
 
 + 21-7 
 
 75 
 
 187 
 
 
 
 418 
 
 0-660 
 
 317-6 
 
 36-8 
 
 + 20-8 
 
 2! 
 
 61 
 
 
 
 416 
 
 0-888 
 
 2 99'9 
 
 I I 2-8 
 
 + 22-7 
 
 10 
 
 33 
 
 i385c 
 
 
 4'9 
 
 0-430 
 
 27-0 
 
 353-g 
 
 4- 1 5-g 
 
 82 
 
 265 
 
 
 
 416 
 
 0-876 
 
 2 97'9 
 
 1 1 rg 
 
 + 20-5 
 
 46 
 
 64 
 
 
 Feb. n* 
 
 
 
 
 
 
 (203) 
 
 (689) 
 
 
 
 416 
 
 0-870 
 
 299-0 
 
 i lO'g 
 
 + 2T2 
 
 9 
 
 3 4 
 
 
 
 
 
 
 
 
 
 
 
 
 4i5 
 
 o-5 1 5 
 
 326-9 
 
 74'i 
 
 + l8- 9 
 
 72 
 
 338 
 
 
 41-975 
 
 
 0-982 
 
 2g3'o 
 
 
 
 
 
 667 
 
 
 416 
 
 0-479 
 
 327-0 
 
 72-2 
 
 + I7-2 
 
 7 
 
 18 
 
 
 
 4'7 
 
 0-874 
 
 296-6 
 
 43-9 
 
 + 18-4 
 
 21 
 
 7' 
 
 
 
 416 
 
 0-491 
 
 328-7 
 
 71-9 
 
 + J8'4 
 
 4 
 
 18 
 
 
 
 4'7 
 
 0-828 
 
 296-9 
 
 38-q 
 
 + 16-9 
 
 5 
 
 25 
 
 416 c 
 
 
 4i5 
 
 0-467 
 
 333-1 
 
 69-2 
 
 + 18-1 
 
 9 
 
 23 
 
 
 
 418 
 
 o-83o 
 
 3ori 
 
 3 7 '3 
 
 + 21-0 
 
 10 
 
 18 
 
 22 4 / 
 
 
 418 
 
 0-491 
 
 341-6 
 
 66-0 
 
 + 21'2 
 
 2 
 
 5 
 
 
 
 4'9 
 
 o'3g5 
 
 346-4 
 
 353-4 
 
 + i5'7 
 
 5o 
 
 H9 
 
 
 
 416 
 
 0-469 
 
 342-8 
 
 64-6 
 
 + '9'4 
 
 9 
 
 26 
 
 
 
 422 
 
 0-470 
 
 I2O-0 
 
 322-4 
 
 -'97 
 
 ii 
 
 27 
 
 
 
 418 
 
 0-457 
 
 346-3 
 
 63-4 
 
 + 19-6 
 
 '4 
 
 19 
 
 
 
 422 
 
 0-614 
 
 123-3 
 
 3zo-3 
 
 -22-4 
 
 2 
 
 8 
 
 
 4 i5 
 
 0-461 
 
 3477 
 
 62-4 
 
 + 20'I 
 
 '7 
 
 7* 
 
 
 
 
 0-806 
 
 48-6 
 
 
 
 
 
 58 
 
 417 
 
 0-467 
 
 26-4 
 
 43-8 
 
 + 18-2 
 
 3i 
 
 9 2 
 
 
 
 
 0-969 
 
 ,,3- 7 
 
 
 
 
 
 324 
 
 41? 
 
 0-487 
 
 33-g 
 
 3 9'9 
 
 + 17-5 
 
 
 
 5 
 
 
 Feb. 12 
 
 
 
 
 
 
 (99) 
 
 (3 9 8) 
 
 ('579) 
 
 4'7 
 
 0-481 
 
 36-o 
 
 3g-3 
 
 + 16-5 
 
 
 
 4 
 
 
 
 
 
 
 
 
 
 
 
 417 
 
 0-486 
 
 35-7 
 
 3 9 -3 
 
 + 16-8 
 
 7 
 
 '4 
 
 
 42-646 
 
 4'7 
 
 0-929 
 
 293-4 
 
 43-1 
 
 + 18-8 
 
 16 
 
 62 
 
 
 4.IQ 
 
 0-904 
 
 69-1 
 
 355-3 
 
 + i5-7 
 
 IOO 
 
 269 
 
 '94/ 
 
 
 4'9 
 
 0-463 
 
 32 7 -8 
 
 353-6 
 
 4-15-9 
 
 66 
 
 268 
 
 
 Feb. 7* 
 
 
 
 
 
 (4") 
 
 (1227) 
 
 (3325) 
 
 
 422 
 
 0-341 
 
 i3o - 5 
 
 323-2 
 
 19-3 
 
 i3 
 
 20 
 
 
 
 
 
 
 
 
 
 
 Feb. 1 3* 
 
 
 
 
 
 (95) 
 
 (35o) 
 
 
 37-828 
 
 0-qi8 
 
 264-8 
 
 
 
 
 
 289 
 
 43-841 
 
 o'g63 
 
 294-1 
 
 
 
 
 
 2046 
 
 
 416 
 
 0-981 
 
 293-6 
 
 1 17-6 
 
 + 21-5 
 
 i i 7 335 
 
 21446 
 
 
 0-790 
 
 33ro 
 
 
 
 
 
 io63 
 
 
 416 
 
 0-969 
 
 296-7 
 
 I I 1'2 
 
 + 23-2 
 
 1 1 64 
 
 
 
 4'9 
 
 0-6 1 5 
 
 307-2 
 
 354-4 
 
 + 16-9 
 
 59 
 
 247 
 
 
 
 416 
 
 0-677 
 
 3ii'8 
 
 75-3 
 
 -j-21'2 
 
 21 
 
 
 
 422 
 
 0-227 
 
 172-8 
 
 322-2 
 
 '9'9 
 
 5 
 
 16 
 
 
 
 418 
 
 0-646 
 
 3io-i 
 
 74-1 
 
 + l8'9 
 
 61 424 
 
 
 
 422 
 
 0-242 
 
 167-0 
 
 320-6 
 
 2O'5 
 
 
 
 i3 
 
 
 
 416 
 
 0-089 
 
 3 1 5'i 
 
 68-6 
 
 + l8'7 
 
 6 i3 
 
 
 
 423 
 
 0-981 
 
 68-2 
 
 248-7 
 
 + '97 
 
 24 
 
 118 '946c 
 
 
 418 
 
 0-553 
 
 322-8 
 
 63'4 
 
 + 19'9 
 
 o i5 
 
 
 
 424 
 
 0-986 
 
 iog-3 
 
 242-3 
 
 2O'I 
 
 70 
 
 220 
 
 
 4 i5 
 
 0-646 
 
 326-0 
 
 62-1 
 
 + 20-3 
 
 10 24 
 
 
 Feb. 14* 
 
 
 
 
 
 
 (168) 
 
 (614) (6064) 
 
 * Indian photo. The Areas of Spots and Faculse are expressed iu Millionths of the Sun's visible Hemisphere. 
 
REDUCTION OF SOLAR PHOTOGRAPHS THROI-OHOIT is 7* 
 
 17 
 
 MKASI UKS of POSITIONS and AREAS of SPOTS and FACUL.K upon the Sen's DISK on PHOTOGRAPHS taken in the YKAR 1881 continued. 
 
 
 
 Dis- 
 
 
 HKI.IOGRAPHIC 
 
 SPOTS. 
 
 FACDL*. 
 
 
 
 Dis- 
 
 
 lll:l.l... l:\l-nir 
 
 SPOTS. 
 
 FACULJC. 
 
 Mean 
 Solar 
 Time. 
 
 No. of 
 Group, 
 and 
 Letter 
 for 
 Spot. 
 
 tance 
 
 from 
 ( 'entre 
 in 
 terms 
 of 
 Sun's 
 Radius. 
 
 Position 
 Angle 
 from 
 Sim'* 
 A\'-. 
 
 
 
 
 Mean 
 Solar 
 Time. 
 
 No. of 
 Group, 
 and 
 Letter 
 for 
 Spot. 
 
 tance 
 from 
 Centre 
 in 
 terms 
 of 
 Sun's 
 Radius. 
 
 Position 
 Anjrle 
 from 
 
 Sun'.- 
 Axis. 
 
 
 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBRA 
 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 
 WHOI.K 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 DHBBA 
 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 WHOLE 
 
 for i ;:eh 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 1 88 1. 
 
 
 
 o 
 
 o 
 
 
 
 
 
 
 1881. 
 
 
 
 o 
 
 o 
 
 o 
 
 
 
 
 44-1-813 
 
 4'9 
 
 O'75o 
 
 2q8-q 
 
 3535 
 
 4-16-2 
 
 7 
 
 21 I 
 
 
 5o d 'gog 
 
 4266 
 
 0-466 
 
 21-0 
 
 220-3 
 
 + 187 
 
 o 
 
 4 
 
 
 
 423 
 
 O'q32 
 
 65-3 
 
 246-4 
 
 + 20-0 
 
 42 
 
 '27 
 
 I78l/ 
 
 
 4250 
 
 0-481 
 
 I II'O 
 
 202'6 
 
 1 6-2 
 
 7 
 
 16 
 
 
 
 424 
 
 o.g3o 
 
 108-6 
 
 241-2 
 
 lg-8 
 
 92 
 
 294 
 
 
 
 425u 
 
 0-499 
 
 MI'O 
 
 2OI-5 
 
 -i 6-5 
 
 n 
 
 18 
 
 
 Feb. i5* 
 
 
 
 
 
 
 (204) 
 
 (632) 
 
 (1781) 
 
 
 425a 
 
 0'502 
 
 107-8 
 
 2OO-9 
 
 1 5-o 
 
 5 
 
 18 
 
 
 
 
 
 
 
 
 
 
 
 
 425er 
 
 o-5 16 
 
 I 10-2 
 
 200-2 
 
 16-4 
 
 18 
 
 57 
 
 
 
 
 
 
 
 
 
 
 
 
 4256 
 
 o-56g 
 
 IIO'l 
 
 I96-5 
 
 -17-2 
 
 
 
 9 
 
 
 45-861 
 
 4'9 
 
 0-872 
 
 293'i 
 
 353-3 
 
 -T-I6-2 
 
 63 
 
 174 
 
 i g3 1 p 
 
 
 4256 
 
 o-56g 
 
 107-9 
 
 196*3 
 
 16-0 
 
 28 
 
 85 
 
 
 
 4240 
 
 0-682 248-5 
 
 33g-o 
 
 -'97 
 
 o 
 
 '9 
 
 
 
 426 
 
 0-818 
 
 I02'7 
 
 175-1 
 
 -14-4 
 
 32 
 
 94 
 
 '44V 
 
 
 424^ 0-643 245 q 
 
 335-5 
 
 20-8 
 
 22 
 
 5i 
 
 
 Feb. 2i 
 
 
 
 
 
 
 094) 
 
 (724) 
 
 ('443) 
 
 
 4 23 
 
 o-836 60 5 
 
 246-3 
 
 + 2O'0 
 
 28 
 
 127 
 
 i85i 
 
 
 
 
 
 
 
 
 
 
 
 424 
 
 0-825 
 
 iog-3 
 
 241-2 
 
 1 9-8 
 
 49 
 
 234 
 
 i38 7 / 
 
 
 
 
 
 
 
 
 
 
 Fob. 16* 
 
 
 
 
 
 
 (162) 
 
 (6o5) 
 
 (5 1 69) 
 
 5 1 -5 9 7 
 
 423 
 
 o-58 1 
 
 321-3 
 
 243-9 
 
 + 20-3 
 
 '9 
 
 93 
 
 
 
 
 
 
 
 
 
 
 
 
 424 
 
 o-38o 
 
 23r5 
 
 23g-6 
 
 20*4 
 
 4' 
 
 218 
 
 
 
 
 
 
 
 
 
 
 
 
 4266 
 
 0-426 
 
 356-3 
 
 222-9 
 
 + 1 8-0 
 
 
 
 16 
 
 
 46706 
 
 419 
 
 O-qoo 
 
 28g-5 
 
 353-5 
 
 + 16-0 
 
 25 
 
 123 
 
 I75l n 
 
 
 4266 
 
 0-413 
 
 2'7 
 
 220-0 
 
 4- '7'2 
 
 o 
 
 '9 
 
 
 
 424" 
 
 0-780 
 
 249-4 
 
 336'o 
 
 2O-5 
 
 47 
 
 92 
 
 1037 p 
 
 
 4266 
 
 0-432 
 
 3-8 
 
 219-5 
 
 + I8-3 
 
 o 
 
 '4 
 
 
 
 4240 
 
 0-755 
 
 247-8 
 
 333-4 
 
 21-2 
 
 12 
 
 24 
 
 
 
 425a 
 
 0-340 
 
 "7'9 
 
 ao3-i 
 
 i5-g 
 
 o 
 
 44 
 
 
 
 423 
 
 0-735 
 
 54-0 
 
 245-9 
 
 4-20-1 
 
 28 
 
 122 
 
 2332 if 
 
 
 4380 
 
 0-374 
 
 11 3-7 
 
 2OO'5 
 
 i 5-3 
 
 o 
 
 5 
 
 
 
 424 
 
 0-702 
 
 111-4 
 
 241-1 
 
 19-9 
 
 5o 
 
 273 
 
 i844/ 
 
 
 425a 
 
 o-3g6 
 
 ii 5-6 
 
 199-5 
 
 16-4 
 
 o 
 
 4' 
 
 
 Feb. 17* 
 
 
 
 
 
 
 (162) 
 
 (634) 
 
 (7264) 
 
 
 425A 
 
 0-460 
 
 111-4 
 
 94'8 
 
 i6'o 
 
 
 
 55 
 
 
 
 
 
 
 
 
 
 
 
 
 426 
 
 0-729 
 
 103-4 
 
 174-3 
 
 14-6 
 
 
 
 55 
 
 
 
 
 
 
 
 
 
 
 
 Feb. 22 j 
 
 
 
 
 
 
 (60) 
 
 (56o) 
 
 
 47-753 
 
 
 o-g33 
 
 2g3-3 
 
 
 
 
 
 2054 
 
 
 
 
 
 
 
 
 
 
 
 424(1 
 
 0-917 
 
 25o-8 
 
 338 -7 
 
 -20-4 
 
 12 
 
 35 
 
 
 
 
 
 
 
 
 
 
 
 
 4240 
 
 0-897 
 
 25o-2 
 
 335-7 
 
 20-8 
 
 49 
 
 98 
 
 i6 4 3/ 
 
 52-667 
 
 4 23 
 
 0710 
 
 307-6 
 
 243-7 
 
 + 19-8 
 
 33 
 
 110 
 
 
 
 4246 
 
 0-438 
 
 334-1 
 
 282-8 
 
 + 16-2 
 
 '4 
 
 26 
 
 
 
 424 
 
 0-363 
 
 243-3 
 
 23g-5 
 
 20-8 
 
 75 
 
 283 
 
 
 
 4 23 
 
 o-6o5 
 
 43-1 
 
 245-4 
 
 + 19-9 
 
 33 
 
 M 3 
 
 99' s f 
 
 
 4266 
 
 0-499 
 
 3 2 6-6 
 
 223-6 
 
 + '77 
 
 2 
 
 7 
 
 
 
 424 
 
 0-041 
 
 117-3 
 
 240-7 
 
 20-4 
 
 74 
 
 278 
 
 
 
 4266 
 
 0-460 
 
 3307 
 
 220-6 
 
 + 16-6 
 
 
 
 7 
 
 
 
 
 0-904 1 06-0 
 
 
 
 
 
 i638 
 
 
 4266 
 
 '449 
 
 333-7 
 
 219-0 
 
 -I-16-6 
 
 
 
 3 
 
 
 Feb. 18* 
 
 
 
 
 
 
 ('82) 
 
 (58o) 
 
 (6326) 
 
 
 425a 
 
 o-i5i 
 
 i65-o 
 
 204-8 
 
 -i 5-6 
 
 13 
 
 24 
 
 
 
 
 
 
 
 
 
 
 
 
 42 5a 
 
 0-179 
 
 141-5 
 
 200-5 
 
 i 5-i 
 
 o 
 
 3 
 
 
 
 
 
 
 
 
 
 
 
 
 
 42.V/ 
 
 0-1 99 
 
 '44'9 
 
 200-3 
 
 -i6-5 
 
 2 
 
 5 
 
 
 48761 
 
 4240 
 
 0-977 
 
 25o-5 
 
 337-8 
 
 20-5 
 
 
 
 2 9 
 
 
 
 425 
 
 O-235 
 
 1337 
 
 9 6 '9 
 
 16-4 
 
 O 
 
 3 
 
 
 
 424" 
 
 0-960 
 
 25O'2 
 
 333-5 
 
 20-9 
 
 16 
 
 38 
 
 9'2/ 
 
 
 425i 
 
 0-264 
 
 128-7 
 
 ig5'2 
 
 -1 6-2 
 
 21 
 
 56 
 
 
 
 423 o'5o6 
 
 26-2 
 
 244-8 
 
 4-20-0 
 
 27 
 
 '44 
 
 
 
 426 
 
 0-543 
 
 io5-g 
 
 174-6 
 
 14-6 
 
 28 
 
 So 
 
 
 
 424 
 
 0-374 
 
 128-6 
 
 240-4 
 
 20-3 
 
 67 
 
 286 
 
 
 
 426 
 
 0-548 
 
 iog-6 
 
 174-6 
 
 -16-7 
 
 
 
 6 
 
 
 
 425(7 
 
 o-852 100-2 199-6 
 
 -i 6-6 
 
 6 
 
 i5 
 
 
 Feb. 23* 
 
 
 
 
 
 
 (74) 
 
 (58 7 ) 
 
 
 
 4256 
 
 0-877 io5'5 196-6 
 
 -17-0 
 
 o 
 
 6 
 
 
 
 
 
 
 
 
 
 
 
 
 
 0-861 
 
 104-8 
 
 
 
 
 
 1448 
 
 53-8i6 
 
 
 0-864 
 
 204-3 
 
 
 
 
 
 769 
 
 Feb. ig* 
 
 
 
 
 
 
 (116) 
 
 (5o8) 
 
 (236o) 
 
 
 423 
 
 o-885 
 
 298-6 
 
 248-1 
 
 + 2I-I 
 
 
 
 i3 
 
 
 
 
 
 
 
 
 
 
 
 
 423 
 
 0-848 
 
 299-4 
 
 243-7 
 
 -t-20'2 
 
 29 
 
 "7 
 
 1078 c 
 
 
 
 
 
 
 
 
 
 
 
 424 
 
 0-740 
 
 248-9 
 
 239-2 
 
 20-4 
 
 3g 
 
 3oi 
 
 
 4977 
 
 423 
 
 0-460 
 
 1-2 
 
 244-6 
 
 + 2O-2 
 
 3o 
 
 io5 
 
 
 
 
 o'2g5 
 
 23g-o 
 
 207-1 
 
 -5-7 
 
 1 1 
 
 23 
 
 
 
 424 
 
 0-243 
 
 l6o'2 
 
 240-2 
 
 20-3 
 
 56 
 
 258 
 
 
 
 425o 
 
 0-234 
 
 23o-8 
 
 202-7 
 
 -i 5-6 
 
 2 
 
 6 
 
 
 
 42 5 
 
 0-705 
 
 I 06' 2 
 
 200'5 
 
 i6-5 
 
 1 1 
 
 22 
 
 
 
 4254 
 
 0-166 
 
 20 ro 
 
 195-4 
 
 -16-1 
 
 16 
 
 24 
 
 
 
 420 0-739 
 
 104-8 
 
 197-5 
 
 i 5-7 
 
 o 
 
 7 
 
 
 
 426 
 
 0-323 
 
 1 16-7 
 
 174-6 
 
 10-2 
 
 25 
 
 66 
 
 
 
 4206 
 
 0-753 
 
 1 06- 2 
 
 ig6-3 
 
 i6-g 1 o 
 
 7 
 
 
 
 427 
 
 0< 979 
 
 65-8 
 
 117-8 
 
 4-21-9 
 
 67 
 
 1 00 
 
 371 c 
 
 
 426 
 
 0-9 35 
 
 IO2'4 
 
 175-1 
 
 -14-1 
 
 3i 
 
 1 53 
 
 9'8/ 
 
 Feb. 24* 
 
 
 
 
 
 
 (189) 
 
 (700) 
 
 (24,8) 
 
 Feb. 20* 
 
 
 
 
 
 
 (128) 
 
 (552) 
 
 (1918) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 4 23 
 
 0-941 
 
 294-3 
 
 243-0 
 
 4-20-0 
 
 46 
 
 1 55 
 
 2263 / 
 
 
 
 
 
 
 
 
 
 
 
 424 
 
 0-877 
 
 25o-5 
 
 239' i 
 
 20-6 
 
 61 
 
 226 
 
 2i6oc 
 
 00-909 
 
 4 23 
 
 o-o 1 6 
 
 333-1 
 
 244-8 
 
 + 20-4 
 
 29 
 
 118 
 
 
 
 
 0-524 
 
 2or3 
 
 208-2 
 
 i5'g 
 
 i5 
 
 33 
 
 
 
 424 
 
 0-284 
 
 2147 
 
 240-3 
 
 20-5 
 
 60 
 
 261 
 
 
 
 4200 
 
 0*004 
 
 252-1 
 
 207-0 
 
 i 5-i 
 
 2 
 
 7 
 
 
 
 4266 
 
 0-452 
 
 i6-g 
 
 222-5 
 
 + i8-5 
 
 o 
 
 9 
 
 
 
 425 
 
 0-438 
 
 249-6 
 
 202-4 
 
 -i 5-3 
 
 7 
 
 23 
 
 
 
 4266 
 
 0-476 
 
 17-9 
 
 221'5 
 
 4-19-8 
 
 
 
 7 
 
 
 
 426 
 
 0-146 
 
 1 65-8 
 
 175-2 
 
 i 5-3 
 
 '9 
 
 68 
 
 
 
 426^ 
 
 0-444 
 
 21-9 
 
 220-5 
 
 + 17-2 
 
 '4 
 
 24 
 
 
 
 427 
 
 0-9 1 3 
 
 61-9 
 
 1 17-2 
 
 + 22-0 
 
 i5 
 
 53 
 
 2600 
 
 
 4266 
 
 0-455 
 
 21-3 
 
 220-4 
 
 + 18-0 
 
 o 
 
 4 
 
 
 Feb. 25* 
 
 
 
 
 
 
 (,65) 
 
 (565) 
 
 (7023) 
 
 * Indian photo. The Area- of Spot- iiml KiicnUe are expressed in Millionth* of the Sun's visible Hen.^pli, r. f Melbourne photo. 
 
REDUCTION OF SOLAR PHOTOGRAPHS THROUGHOUT 1878-1881. 
 
 MEASURES of POSITIONS and AKEAS of SPOTS and FACCL^E upon the SUN'S DISK on PHOTOGRAPHS taken in the YEAR 1881 continued. 
 
 
 
 Dis 
 
 
 HEMOGKAPHIC 
 
 SPOTS. 
 
 FACIIL.*:. 
 
 
 
 Dis- 
 
 
 HKLIOGBAPIIIC 
 
 SPOTS. 
 
 FACUL/E. 
 
 
 No. of 
 
 tance 
 P 
 
 . , 
 
 
 
 
 
 No. of 
 
 tance 
 
 
 
 
 
 Mean 
 Solar 
 Time. 
 
 Group, 
 and 
 Letter 
 for 
 Spot. 
 
 trom 
 Centre 
 in 
 terms 
 of 
 Sun's 
 Radius. 
 
 osition 
 Angle 
 from 
 
 Sun's 
 Axis. 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBRA 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 WHOLE 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 Mean 
 Solar 
 Time. 
 
 jroup, 
 and 
 Letter 
 for 
 Spot. 
 
 from 
 Centre 
 in 
 terms 
 of 
 Sun's 
 Radius. 
 
 Position 
 Angle 
 from 
 Sun's 
 Axis. 
 
 Long! 
 (ude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBRA 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 \VIIOLE 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 
 Group 
 (and lor 
 Day). 
 
 1881. 
 
 
 
 
 
 o 
 
 
 
 
 
 
 1881. 
 
 
 
 
 
 o 
 
 o 
 
 
 
 
 56 d- oi2 
 
 423 
 
 0-994 
 
 291-4 
 
 243-4 
 
 4-20-2 
 
 7 
 
 5o 
 
 397/ 
 
 65 d -gi8 
 
 
 o-g83 
 
 295-5 
 
 
 
 
 
 207 
 
 
 424 
 
 o-g65 
 
 25o-g 
 
 23g*2 
 
 20-3 
 
 5g 
 
 214 
 
 294 s / 
 
 
 
 o-83i 
 
 3o6-2 
 
 
 
 
 
 3ig 
 
 
 425or 
 
 0-716 
 
 255- 4 
 
 208-8 
 
 1 5'4 
 
 10 
 
 22 
 
 
 
 
 0-802 
 
 235-8 
 
 
 
 
 
 100 
 
 
 425cr 
 
 0-627 
 
 254-6 
 
 201-7 
 
 i 5-3 
 
 o 
 
 6 
 
 
 
 428 
 
 0-473 
 
 35 1-5 
 
 36-7 
 
 + 20-6 
 
 7 
 
 27 
 
 
 
 426 
 
 0-243 
 
 233-3 
 
 174-6 
 
 -i 5-4 
 
 9 
 
 19 
 
 
 
 429 
 
 0-869 
 
 1 06-6 
 
 33i-7 
 
 i 8-0 
 
 o 
 
 9 
 
 555 s p 
 
 
 427 
 
 0-8 1 1 
 
 56-2 
 
 1 1 6-6 
 
 + 21-9 
 
 18 
 
 62 
 
 764 sf 
 
 
 
 0-988 
 
 747 
 
 3i3-8 
 
 + I3-8 
 
 o 
 
 n3 
 
 87 c 
 
 
 
 o-g58 
 
 68-2 
 
 
 
 
 
 240 
 
 
 4 3i 
 
 0-989 
 
 110-8 
 
 3og-i 
 
 21*5 
 
 o 
 
 1 08 
 
 277 c 
 
 Feb. 26 
 
 
 
 
 
 
 (io3) 
 
 (373) 
 
 (i6 9 5) 
 
 
 
 0-885 
 
 5g-2 
 
 
 
 
 
 232 
 
 
 
 
 
 
 
 
 
 
 Mar. 8 
 
 
 
 
 
 
 (7) 
 
 (25 7 ) 
 
 (I82 7 ) 
 
 56-607 
 
 424 
 
 0-987 
 
 25o-6 
 
 237-7 
 
 20-3 
 
 47 
 
 2'7 
 
 i5oi f 
 
 66-784 
 
 
 o-go3 
 
 2gg-5 
 
 
 
 
 
 1054 
 
 
 4270 
 
 o'gio 
 
 291-0 
 
 2i6-g 
 
 4-15-7 
 
 ii 
 
 37 
 
 ig83p 
 
 
 4 32 
 
 0-432 
 
 240-8 
 
 44-5 
 
 -18-7 
 
 3 
 
 10 
 
 
 
 425 
 
 o-8o3 
 
 256-4 
 
 2o8'g 
 
 l5'2 
 
 10 
 
 26 
 
 626 c 
 
 
 428 
 
 0-524 
 
 3317 
 
 36- 4 
 
 + 20-4 
 
 6 
 
 1 1 
 
 
 
 4276 
 
 o-63 1 
 
 3087 
 
 1 86-0 
 
 + 17-0 
 
 4 
 
 8 
 
 
 
 433 
 
 0-762 
 
 5 4 -8 
 
 339-6 
 
 -Mo-6 
 
 24 
 
 4 1 
 
 
 
 4276 
 
 0-6 1 1 
 
 3io-o 
 
 184-3 
 
 + 16-8 
 
 o 
 
 28 
 
 
 
 433 
 
 0-811 
 
 54-0 
 
 335-6 
 
 + 23-5 
 
 o 
 
 94 
 
 1041 c 
 
 
 426 
 
 o-356 
 
 245-0 
 
 174-6 
 
 i 5-4 
 
 10 
 
 i3 
 
 
 
 43o 
 
 o-g36 
 
 727 
 
 314*6 
 
 + 3'4 
 
 o 
 
 67 
 
 
 
 427 
 
 0-736 
 
 5i-3 
 
 117-1 
 
 + 21-7 
 
 16 
 
 32 
 
 i8o6c 
 
 
 430 
 
 0-971 
 
 7 i-5 
 
 3o8-i 
 
 + i5'q 
 
 o 
 
 i3o 
 
 14876 
 
 Feb. 27* 
 
 
 
 
 
 
 (98) 
 
 (36 1) 
 
 (59 i 6) 
 
 
 43i 
 
 o-g33 
 
 1 10-4 
 
 3ll'2 
 
 -21-6 
 
 o 
 
 143 
 
 
 
 
 
 
 
 
 
 
 
 
 431 
 
 o-g3 4 
 
 iog-4 
 
 3u-i 
 
 20-6 
 
 o 
 
 26 
 
 
 
 
 
 
 
 
 
 
 
 
 43 1 
 
 o - g65 
 
 i io-3 
 
 304-9 
 
 -21-4 
 
 o 
 
 59 
 
 17780 
 
 57-712 
 
 
 0-889 
 
 256-2 
 
 
 
 
 
 507 
 
 
 
 
 
 
 
 (33) 
 
 (58i) 
 
 (536o) 
 
 
 
 o-g3o 
 
 64-7 
 
 
 
 
 
 io5o 
 
 Mar. g* 
 
 
 
 
 
 
 
 
 
 
 427 
 
 0-60 1 
 
 38-o 
 
 117-3 
 
 + 21-6 
 
 
 
 '4 
 
 
 
 
 
 
 
 
 
 
 
 
 427 
 
 0-642 
 
 38-o 
 
 Il5'2 
 
 + 23-8 
 
 o 
 
 20 
 
 
 
 
 
 
 
 
 
 
 
 Feb. 28* 
 
 
 
 
 
 
 (o) 
 
 (34) 
 
 (i55 7 ) 
 
 67-784 
 
 
 o-g65 
 
 
 
 
 
 
 622 
 
 
 
 
 
 
 
 
 
 
 
 
 o-865 
 
 302-4 
 
 
 
 
 
 1 1 54 
 
 
 
 
 
 
 
 
 
 
 
 4 32 
 
 o-623 
 
 249-0 
 
 45-6 
 
 18-6 
 
 8 
 
 '4 
 
 
 58783 
 
 
 o-g6g 
 
 254-3 
 
 
 
 
 
 1426 
 
 
 428 
 
 0-635 
 
 3 1 5-3 
 
 36-2 
 
 + 20-4 
 
 8 
 
 '4 
 
 
 
 
 0-882 
 
 294'9 
 
 
 
 
 
 '97 
 
 
 433 
 
 0-626 
 
 44-5 
 
 340-2 
 
 4-20-1 
 
 5o 
 
 288 
 
 
 
 427 
 
 O'5O2 
 
 17-2 
 
 117-4 
 
 + 21-4 
 
 5 
 
 '4 
 
 
 
 433 
 
 0-667 
 
 44-0 
 
 338-2 
 
 + 2I-1 
 
 4 
 
 21 
 
 
 
 427 
 
 0-562 
 
 20-4 
 
 1 14-1 
 
 + 247 
 
 8 
 
 9 
 
 
 
 433 
 
 0-722 
 
 44-8 
 
 333-g 
 
 + 24-9 
 
 4 5 
 
 148 
 
 
 
 
 o-g24 
 
 62-0 
 
 
 
 
 
 86g 
 
 
 430 
 
 0-838 
 
 68-8 
 
 314-7 
 
 + i3'4 
 
 32 
 
 IOI 
 
 
 Mar. i * 
 
 
 
 
 
 
 (i3) 
 
 (33) 
 
 (2492) 
 
 
 43o 
 
 0-886 
 
 68-8 
 
 3og-3 
 
 + 1 5-o 
 
 24 
 
 5i 
 
 1784 r 
 
 
 
 
 
 
 
 
 
 
 
 43o 
 
 0-9 1 3 
 
 68-g 
 
 3o5-8 
 
 + i5-g 
 
 o 
 
 5o 
 
 
 
 
 
 
 
 
 
 
 
 
 43o 
 
 0-917 
 
 70-3 
 
 3o 4 -8 
 
 + 14-8 
 
 16 
 
 3g 
 
 
 60-771 
 
 
 o- 9 2g 
 
 256'o 
 
 
 
 
 
 1747 
 
 
 4 3i 
 
 0-8 1 5 
 
 111*7 
 
 3i3'5 
 
 21-8 
 
 3o 
 
 89 
 
 
 
 428 
 
 o-g23 
 
 64-2 
 
 38-o 
 
 + 20-4 
 
 20 
 
 52 
 
 22OO C 
 
 
 43 1 
 
 0-829 
 
 1 1 ro 
 
 3irg 
 
 21-4 
 
 '4 
 
 25 
 
 
 Mar. 3* 
 
 
 
 
 
 
 (20) 
 
 (52) 
 
 (3947) 
 
 
 4 3i 
 
 0-844 
 
 in-3 
 
 3io-2 
 
 21-8 
 
 18 
 
 35 
 
 i85g c 
 
 
 
 
 
 
 
 
 
 
 
 4OI 
 
 0-860 
 
 109-2 
 
 3o8-2 
 
 20-2 
 
 
 
 25 
 
 
 
 
 
 
 
 
 
 
 
 
 4-3 1 
 
 0-885 
 
 1 10-7 
 
 3o5'i 
 
 21-7 
 
 40 
 
 60 
 
 
 61-684 
 
 428 
 
 0-835 
 
 60-0 
 
 38-1 
 
 4-2OM 
 
 22 
 
 5 4 
 
 2065 c 
 
 Mar. to* 
 
 T 
 
 
 
 
 
 (289) 
 
 (960) 
 
 (5419) 
 
 Mar. 4* 
 
 
 
 
 
 
 (22) 
 
 (54) 
 
 (2066) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 68-gg6 
 
 
 o-g58 
 
 279-2 
 
 
 
 
 
 38 1 
 
 62778 
 Mar. 5 
 
 428 
 
 0-709 
 
 5i- 7 
 
 377 
 
 4-20-2 
 
 33 
 (33) 
 
 88 
 (88) 
 
 I IO2 C 
 
 (1102) 
 
 
 432 
 433 
 
 0-800 
 0-820 
 0-486 
 
 3o3'o 
 252-5 
 21-8 
 
 47-2 
 3*o-g 
 
 j+18-5 
 -'97 
 
 
 
 66 
 
 12 
 
 3o3 
 
 38 1 
 
 I26/ 
 
 63'6go 
 Mar. 6* 
 
 428 
 
 o'5g6 
 
 40*0 
 
 37-9 
 
 + 20-5 
 
 20 
 (20) 
 
 78 
 (78) 
 
 
 
 433 
 433 
 
 c-556 
 0-617 
 
 26-7 
 29-6 
 
 336-3 
 332-3 
 
 + 22-8 
 
 4-25-6 
 
 6 
 33 
 
 39 
 I 7 5 
 
 
 
 
 
 
 
 
 
 
 
 
 43o 
 
 0-673 
 
 60-4 
 
 3i5-i 
 
 4-i3-7 
 
 '4 
 
 52 
 
 
 65-Qio 
 
 
 o-g52 
 0-926 
 0-776 
 
 296-7 
 243-5 
 3o5'7 
 
 
 
 
 
 482 
 189 
 
 336 
 
 
 4 3o 
 j.3o 
 4 3i 
 
 0-724 
 0-783 
 0-628 
 
 61-8 
 
 63-4 
 1 14-3 
 
 3io-g 
 3o5-5 
 3i4'4 
 
 4-14-6 
 4 1 5-6 
 
 -20-7 
 
 1 1 
 
 8 
 1 1 
 
 27 
 
 52 
 
 79 
 
 522 C 
 
 Mar. 7 
 
 428 
 
 4 2 9 
 
 0-480 
 o-g58 
 0-881 
 
 H-3 
 
 io6-5 
 61-2 
 
 329-9 
 
 -I7-9 
 
 8 
 
 
 
 (8) 
 
 3o 
 6 
 
 (36) 
 
 602 $ p 
 421 
 
 (2o3o) 
 
 Mar. 1 1 
 
 \3\ 
 
 434 
 
 o 696 
 
 0-758 
 o-779 
 
 Il3'2 
 I I 2-8 
 
 69-8 
 
 3o8-8 
 304-3 
 
 277-1 
 
 21-2 
 
 -21-9 
 
 4-lS-o 
 
 5 
 5 
 
 (i 63) 
 
 16 
 53 
 
 22 
 
 (83o) 
 
 427/ 
 
 3 9 8/ 
 
 (2235) 
 
 * Indian photo. The Areas of Spots and Facula! are expressed in Millionths of the Sun's yisible Hemisphere. 
 
REDUCTION OF SOLAR PHOTOGRAPHS THROUGHOUT 1878-1881. 
 
 49 
 
 MEASURES of POSITIONS and AREAS of SPOTS ami 
 
 F ACCL.S: upon the SUN'S DISK on PHOTOGRAPHS taken in the YEAR 1881 continued. 
 
 
 
 Dis- 
 
 1 HELIOGRAPHI.- 
 
 SPOTS. 
 
 FACIIL*. 
 
 
 
 Dis- 
 
 
 HKI.IOGHAPHIC 
 
 SPOTS. 
 
 FAOOLJt. 
 
 Mean 
 
 Solar 
 Time. 
 
 No. of 
 Sroup, 
 and 
 Letter 
 for 
 Spot. 
 
 tance 
 from 
 Centre 
 in 
 terms 
 of 
 Sun's 
 Radius. 
 
 'osition 
 Angle 
 from 
 Sun's 
 Axis. 
 
 
 
 
 
 Mean 
 Solar 
 Time. 
 
 No. of 
 
 Group, 
 and 
 Letter 
 for 
 Spot. 
 
 tance 
 from 
 Centre 
 in 
 terms 
 of 
 Sun's 
 Radius. 
 
 Position 
 Angle 
 from 
 Sun's 
 Axis. 
 
 
 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBRA 
 
 for i-:i,-h 
 Spot 
 (and for 
 Day). 
 
 Area of 
 \VHOLE 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBRA 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 WHOLE 
 for each 
 Spot 
 (and for 
 I UN). 
 
 Area for 
 each 
 Qroup 
 (and for 
 Day). 
 
 1881. 
 
 
 
 O 
 
 
 
 
 
 
 1881. 
 
 
 
 o 
 
 o 
 
 o 
 
 
 
 
 6g d -8g5 
 
 
 o-83o 
 
 30T2 
 
 
 
 
 1602 
 
 73 d '0l6 
 
 4 33 
 
 0778 
 
 304-0 
 
 342-4 
 
 4-20-6 
 
 57 
 
 3i3 
 
 466 c 
 
 
 4 33 
 
 0-463 
 
 355-5 
 
 342-3 
 
 4-19-5 
 
 62 
 
 283 
 
 
 
 4 33 
 
 0710 
 
 3ig'2 
 
 33o-o 
 
 4 26-4 
 
 8 
 
 35 
 
 189 n p 
 
 
 4 33 
 
 0-468 
 
 3-7 
 
 338'4 
 
 4-ig-g 
 
 O 
 
 2 
 
 
 
 4 35 
 
 0-573 
 
 2 477 
 
 332-8 
 
 -i8-5 
 
 42 
 
 226 
 
 
 
 433 
 
 0-483 
 
 2-4 
 
 33g-o 
 
 4-21-5 
 
 
 
 2 
 
 
 
 4 35 
 
 0-466 
 
 246-4 
 
 324-6 
 
 -7-3 
 
 
 
 36 
 
 
 
 4 33 
 
 0-483 
 
 5-1 
 
 337-6 
 
 4-21-4 
 
 9 
 
 23 
 
 
 
 4 3i 
 
 0-373 
 
 2307 
 
 3 16-8 
 
 20-4 
 
 28 
 
 84 
 
 
 
 433 
 
 0-617 
 
 7'4 
 
 336-0 
 
 4-23-6 
 
 i5 
 
 35 
 
 
 
 4 3o 
 
 0-42.5 
 
 33o-3 
 
 3n-5 
 
 + 14-6 
 
 18 
 
 79 
 
 
 
 433 
 
 O-5ig 
 
 8-8 
 
 335-2 
 
 4-23-6 
 
 4 
 
 7 
 
 
 
 4 36 
 
 O-5 12 
 
 io8-3 
 
 268-8 
 
 -15-4 
 
 38 
 
 i35 
 
 
 
 433 
 
 0'5lO 
 
 9-3 
 
 335-1 
 
 4-22-g 
 
 2 
 
 5 
 
 
 
 4 36 
 
 0-662 
 
 iog-8 
 
 265-5 
 
 i6-g 
 
 37 
 
 187 
 
 
 
 433 
 
 O-554 
 
 9-6 
 
 334-4 
 
 4-25-8 
 
 8 
 
 21 
 
 
 
 4 36 
 
 o-63i 
 
 107-6 
 
 260-3 i 6-6 
 
 36 
 
 260 
 
 i3zi c 
 
 
 433 
 
 0-525 
 
 10-8 
 
 334-1 
 
 4-23-8 
 
 6 
 
 9 
 
 
 
 437 
 
 0-734 
 
 68-6 
 
 255-1 
 
 4-10-4 
 
 36 
 
 218 
 
 88 4 / 
 
 
 4 33 
 
 0-661 
 
 12-3 
 
 332-6 
 
 4-26-0 
 
 26 
 
 86 
 
 
 
 
 o-85g 
 
 112-3 
 
 
 
 
 
 290 
 
 
 435 
 
 0-260 
 
 137-6 
 
 33o-i 
 
 -'77 
 
 4' 
 
 94 
 
 
 Mar. 1 5 
 
 
 
 
 
 
 (3oo) 
 
 (i5 7 3) 
 
 (3i5o) 
 
 
 435 
 
 o'3oo 
 
 l32'0 
 
 326-7 
 
 -18-6 
 
 17 
 
 So 
 
 
 
 
 
 
 
 
 
 
 
 
 4 3o 
 
 0-629 
 
 49-0 
 
 3i6-i 
 
 4-13-7 
 
 i3 
 
 37 
 
 
 
 
 
 
 
 
 
 
 
 
 
 0-682 53-1 
 
 3u-6 
 
 + 14-1 
 
 4 
 
 23 
 
 
 7*3*Q*3o 
 
 433 
 
 0-884 
 
 2g8-i 
 
 343-3 
 
 4-20-8 
 
 5o 
 
 220 
 
 406 c 
 
 
 43o 
 
 0-644 
 
 55-8 
 
 3o6-8 
 
 4-i5-2 
 
 16 
 
 3i 
 
 
 
 4 3 4 
 
 0-808 
 
 3og-8 
 
 33o-5 
 
 4-26-0 
 
 
 
 2 
 
 47 6 /> 
 
 
 4 3i 
 
 0-460 
 
 121-9 
 
 3i5-3 
 
 20-8 
 
 21 
 
 5o 
 
 
 4 35 
 
 0-726 
 
 260-6 
 
 333-1 
 
 18-9 
 
 53 
 
 211 
 
 342 c 
 
 
 4 3 1 
 
 0-643 
 
 117-8 
 
 3og- 4 
 
 20-8 
 
 6 
 
 17 
 
 
 
 4 35 
 
 0-622 
 
 260-4 
 
 324-7 
 
 -17-6 
 
 2 
 
 28 
 
 
 
 
 0-6 1 1 
 
 116-8 
 
 304-4 
 
 -21-8 
 
 8 
 
 24 
 
 
 
 4 3o 
 
 0-684 
 
 306-4 
 
 3 1 5-8 
 
 4- 14-0 
 
 4 
 
 7 
 
 
 
 436 
 
 O'q6l 
 
 104-4 
 
 266-1 
 
 16-8 
 
 
 
 28 
 
 1232 C 
 
 
 4 3o 
 
 0-626 
 
 3i5-g 
 
 3og-2 
 
 4-16-6 
 
 
 
 '9 
 
 
 Vlar. 12* 
 
 
 
 
 
 
 (25 7 ) 
 
 (827) 
 
 (273 4 ) 
 
 . 
 
 4 3i 
 
 0-533 
 
 242-8 
 
 3i7'2 
 
 20-2 
 
 16 
 
 53 
 
 
 
 
 
 
 
 
 
 
 
 
 4 3i 
 
 0-431 
 
 230-7 
 
 3o8-o 
 
 -22-4 
 
 
 
 6 
 
 
 
 
 
 
 
 
 
 
 
 
 4 3i 
 
 o-3g2 
 
 220-6 
 
 3o3 - i 
 
 -24-1 
 
 
 
 28 
 
 
 70-664 
 
 
 0-916 
 
 297'9 
 
 
 
 
 
 1012 
 
 
 4 36 
 
 0-325 
 
 1177 
 
 269-7 
 
 16-4 
 
 5g 
 
 3oi 
 
 
 
 433 
 
 O'O2I 
 
 332-2 344-9 
 
 4-20-4 o 
 
 2 
 
 
 
 436 
 
 0-412 
 
 1 16-0 
 
 264-1 
 
 -i 6-5 
 
 52 
 
 294 
 
 
 
 4 33 
 
 0-490 
 
 336-8 
 
 341-7 
 
 4-19-6 
 
 73 
 
 2 7 8 
 
 
 
 436 
 
 0-486 
 
 114-9 
 
 269-6 
 
 18-0 
 
 35 
 
 1 66 
 
 
 
 433 
 
 0-496 
 
 343-6 
 
 338-5 
 
 4-21-2 
 
 4 
 
 9 
 
 
 
 437 
 
 0-679 
 
 61-1 
 
 266-1 
 
 4-10-2 
 
 37 
 
 141 
 
 26 4 / 
 
 
 4 33 
 
 0-535 
 
 353-4 
 
 333-8 
 
 4-24-8 
 
 19 
 
 84 
 
 
 
 
 0-8 1 5 
 
 63-7 
 
 
 
 
 
 818 
 
 
 
 0-648 
 
 35 7 7 
 
 33r3 
 
 4-25-g 
 
 '9 
 
 7 5 
 
 
 
 
 0-8 1 8 
 
 1 1 3-8 
 
 
 
 
 
 497 
 
 
 435 
 
 0-189 
 
 186-6 
 
 33r2 
 
 -I7-9 
 
 32 
 
 184 
 
 
 Mar. 1 6 
 
 
 
 
 
 
 (3o8) 
 
 (H76) 
 
 (2802) 
 
 
 435 
 
 O'2OO 
 
 i55-i 
 
 324-6 
 
 18-0 
 
 21 
 
 146 
 
 
 
 
 
 
 
 
 
 
 
 
 4 3o 
 
 O'43o 
 
 35-3 
 
 3i5-2 
 
 4-13-6 
 
 12 
 
 '9 
 
 
 74-696 
 
 
 0-716 
 
 3oo-5 
 
 
 
 
 
 3l 4 
 
 
 
 o-5 10 
 
 44-1 
 
 3o8-5 
 
 4-147 
 
 24 
 
 IO1 
 
 
 
 433 
 
 0-966 
 
 293-8 
 
 3 4 3-8 
 
 4-20-7 
 
 37 
 
 179 
 
 838/ 
 
 
 4? i 
 
 0-344 
 
 1 3 4 -8 
 
 314-8 
 
 20-9 
 
 25 
 
 1OI 
 
 
 
 4 35 
 
 0-860 
 
 252-3 
 
 333-0 
 
 -i 8-8 
 
 32 
 
 ig3 
 
 56 4 / 
 
 
 43) 
 
 o-5oo 
 
 122-8 
 
 3o3-o 
 
 22-2 
 
 13 
 
 36 
 
 
 
 4 3i 
 
 0-702 
 
 248-9 
 
 317-2 
 
 -19-7 
 
 9 
 
 4' 
 
 
 
 406 o-goo 
 
 104-6 
 
 265-0 
 
 -16-2 
 
 36 
 
 108 
 
 
 
 43i 0-676 
 
 242-0 
 
 3o6-3 
 
 -21-6 
 
 10 
 
 20 
 
 
 
 436 o-g28 
 
 io3'7 
 
 26o'g 
 
 16-4 
 
 o 
 
 21 
 
 876 c 
 
 
 436 0-161 
 
 166-2 
 
 271-0 
 
 -16-4 
 
 73 
 
 302 
 
 
 
 436 o-g3o io5'5 
 
 260-5 
 
 -I7-1 
 
 7 
 
 5g 
 
 
 
 436 0-220 
 
 137-1 
 
 264-3 
 
 -1 6-2 
 
 36 
 
 167 
 
 
 
 437 0-970 77-2 
 
 255-g 
 
 4-io'5 
 
 32 
 
 172 
 
 1081 c 
 
 
 4 36 o-3og 
 
 i3r6 
 
 269-2 
 
 -18-6 
 
 33 120 
 
 
 Mar. 1 3* 
 
 
 
 
 
 
 (327) 
 
 (1394) 
 
 (2969) 
 
 
 437 
 
 0-41 1 
 
 46-0 
 
 266-2 
 
 4- 10-1 
 
 22 I 4 6 
 
 
 
 
 
 
 
 
 
 i 
 
 
 
 
 o-8o3 
 
 56-3 
 
 
 
 
 
 161 
 
 
 
 
 
 
 
 
 
 
 0-8 ii 
 
 1 17-5 
 
 
 
 
 
 129 
 
 7 ' '9 6 4 
 
 433 0-644 
 
 3i3-5 
 
 342-6 
 
 + 20- 1 
 
 73 
 
 3 1 1 341 p 
 
 Mar. 17 
 
 
 
 
 
 
 (252) 
 
 (n58) 
 
 (2006) 
 
 
 433 
 
 0-609 
 
 332-8 
 
 33o-8 
 
 4-25-g 
 
 i3 
 
 g3 1 53 * p 
 
 
 
 
 
 
 
 
 
 
 
 435 0-3-6 
 
 237-6 
 
 332-2 
 
 i 8-3 
 
 49 
 
 23 4 
 
 76-044 
 
 
 0-970 
 
 3oo-8 
 
 
 
 
 
 401 
 
 
 435 0*289 
 
 127-1 
 
 326-7 
 
 -i 8-3 
 
 9 
 
 96 
 
 
 
 0-820 
 
 2g5 - 5 
 
 
 
 
 
 533 
 
 
 4 3o 
 
 0-357 
 
 358'9 3 1 3-2 
 
 4- 1 3-7 ii 
 
 28 
 
 
 
 4 35 
 
 0-968 
 
 262-0 
 
 333-5 
 
 -19-2 
 
 49 
 
 192 
 
 476 / 
 
 
 43i 0-243 188-0 3i 4 -g 21-0 8 
 
 i3o 
 
 
 
 4 3i 
 
 0-849 
 
 25 1 -3 
 
 317-4 
 
 ig-6 
 
 4 
 
 20 
 
 
 
 431 0-334 '49' 1 
 
 3O2M 23"6 
 
 6 
 
 35 
 
 
 
 4 3l 
 
 774 
 
 246-8 
 
 3og'i 
 
 -22-4 
 
 8 
 
 10 
 
 | J 
 
 
 434 0-682 
 
 537 277-7 
 
 -M7-9 
 
 
 
 10 
 
 1 56 c 
 
 
 4 38 
 
 0*60^ 
 
 3o3-3 
 
 284-2 
 
 4- g-6 
 
 5 
 
 '4 
 
 
 
 436 0714 
 
 io5'2 267-3 
 
 -15-8 
 
 20 
 
 114 
 
 
 
 437 
 
 0-296 
 
 7'9 
 
 266-7 
 
 -l-io-o 
 
 '4 
 
 89 
 
 
 
 4 36 0747 
 
 io6'6 264-0 
 
 -17-1 
 
 2 4 
 
 143 
 
 
 
 436 
 
 0-261 
 
 234-1 
 
 271-7 
 
 -i 5-6 
 
 65 
 
 388 
 
 
 
 436 0-790 
 
 106-2 260-0 
 
 I--2 
 
 12 
 
 102 
 
 4 65 c 
 
 
 436 
 
 0-187 
 
 208-5 
 
 264-4 
 
 16-4 
 
 32 
 
 136 
 
 
 
 437 0-863 
 
 73-7 255-7 
 
 4- 10-2 
 
 33 
 
 I 7 6 
 
 61 1 n 
 
 
 4 36 
 
 0-191 
 
 177-2 
 
 268-6 
 
 18-0 
 
 16 
 
 io3 
 
 
 
 0-946 
 
 1 1 0-5 
 
 
 
 
 
 161 
 
 
 
 0-867 
 
 109-3 
 
 
 
 
 
 248 
 
 Mar. 14 
 
 
 
 
 
 (268) 
 
 ('52.) 
 
 (1887) 
 
 
 o-g3o 
 
 67-2 
 
 
 
 
 
 4 3l 
 
 
 
 
 
 
 
 
 
 Mar. r8 
 
 
 
 
 
 (1 9 2) 
 
 ( 9 5a) 
 
 (2694) 
 
 ' Indian photo. The Areas of Spots and 
 
 Facnlsc are expressed in Millionths of the Sun's visible Hemisphere. 
 
 B4893. 
 
50 
 
 REDUCTION OF SOLAR PHOTOGRAPHS THROUGHOUT 1878-1881. 
 
 MEASURES of POSITIONS and AREAS of SPOTS and FACCL^E upon the SUN'S DISK on PHOTOGRAPHS taken in the YEAR 1881 continued. 
 
 
 
 Dis- 
 
 tllllCt ' 
 
 
 HELIOGRAPHIC 
 
 SPOTS. 
 
 FACCL.S:. 
 
 
 
 Dis- 
 
 
 HELIOGRAPHIC 
 
 SPOTS. 
 
 FxCCLwE. 
 
 Mean 
 Solar 
 Time. 
 
 No. of 
 Gronp, 
 and 
 Letter 
 for 
 Spot. 
 
 from 
 Centre 
 in 
 terms 
 of 
 Sun's 
 Radius. 
 
 Position 
 Angle 
 from 
 Sun's 
 Axis. 
 
 
 
 
 Mean 
 Solar 
 Time. 
 
 No. of 
 Group, 
 and 
 Letter 
 for 
 Spot. 
 
 tance 
 from 
 Centre 
 in 
 terms 
 of 
 Sun's 
 Radius. 
 
 Position 
 Angle 
 from 
 Sun's 
 Axis. 
 
 
 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBRA 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 WHOLE 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBRA 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 WHOLE 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 1881. 
 
 
 
 o 
 
 o 
 
 o 
 
 
 
 
 1881. 
 
 
 
 o 
 
 
 
 
 
 
 
 
 7 7 a-o 4 8 
 
 
 0-926 
 
 292-3 
 
 
 
 
 
 427 
 
 8l d - 7 86 
 
 
 o- 97 8 
 
 282-7 
 
 
 
 
 
 1047 
 
 
 4 3i 
 
 '947 
 
 252-3 
 
 3i8-i 
 
 ig-o 
 
 
 
 5 
 
 
 
 
 0-964 
 
 252'4 
 
 
 
 
 
 6,7 
 
 
 4 36 
 
 0-464 
 
 2 4 8-6 
 
 272-4 
 
 16-0 
 
 7 2 
 
 38 1 
 
 
 
 
 o-gog 
 
 246-6 
 
 
 
 
 
 1060 
 
 
 436 
 
 o-36 1 
 
 24.0-9 
 
 265-0 
 
 -.6-7 
 
 10 
 
 89 
 
 
 
 4^9 
 
 749 
 
 297-1 
 
 226-8 
 
 + i5-o 
 
 96 
 
 2 7 5 
 
 1770^ 
 
 
 4 36 
 
 0-284. 
 
 226-3 
 
 258-2 
 
 -18-1 
 
 H 
 
 97 
 
 
 
 439 
 
 o-67g 
 
 298-6 
 
 221'0 
 
 + i3-6 
 
 76 
 
 400 
 
 
 
 4 3 7 
 
 o-35 1 
 
 326-2 
 
 257-2 
 
 + 10-0 
 
 6 
 
 44 
 
 
 
 44' 
 
 0-384. 
 
 22-6 
 
 I74-6 
 
 + i3-g 
 
 O 
 
 34 
 
 
 
 4^9 
 
 o- 4 g8 
 
 44-8 
 
 224-7 
 
 + 14-1 
 
 4 5 
 
 i5 7 
 
 
 
 44' 
 
 o'3g3 
 
 3l'2 
 
 I7I-3 
 
 + 12-9 
 
 7 
 
 57 
 
 
 
 44 
 
 0-982 
 
 117-4 
 
 164-7 
 
 28-2 
 
 o 
 
 4 5 
 
 i85/ 
 
 
 441 
 
 o- 4 5g 
 
 33- 7 
 
 168-0 
 
 -f 10-9 
 
 4 
 
 18 
 
 
 
 
 0-7 4 o 
 
 I I 2-3 
 
 
 
 
 
 521 
 
 
 
 o-g33 
 
 62-0 
 
 
 
 
 
 604 
 
 
 
 o-85g 
 
 62-5 
 
 
 
 
 
 213 
 
 Mar. 24* 
 
 
 
 
 
 
 (, 9 3) 
 
 (784) 
 
 (5i53) 
 
 
 
 O'g82 
 
 747 
 
 
 
 
 
 ig3 
 
 
 
 
 
 
 
 
 
 
 Mar. 19 
 
 
 
 
 
 
 ('47) 
 
 (8 1 8) 
 
 (2125) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 82-900 
 
 
 0-838 
 
 2 4 6-5 
 
 
 
 
 
 3i? 
 
 
 
 
 
 
 
 
 
 
 
 4 3g 
 
 0-872 
 
 292-1 
 
 225-3 
 
 + i5-5 
 
 33 
 
 222 
 
 
 77723 
 
 
 o-g26 
 
 249-1 
 
 
 
 
 
 1277 
 
 
 439 
 
 o-83o 
 
 290-9 
 
 22T1 j+ |3'1 
 
 75 
 
 386 
 
 6 74 c 
 
 
 44 oa 
 
 o-88g 
 
 3o 7 -6 
 
 290-2 
 
 + 28-8 
 
 IO 
 
 17 
 
 
 
 441 
 
 o-3o8 
 
 355'2 
 
 i6 9 -g 
 
 + 12-9 
 
 5 
 
 32 
 
 
 
 4 36 
 
 o-58 4 
 
 252-4 
 
 2 7 2'I 
 
 i5-g 
 
 58 
 
 340 
 
 
 
 441 
 
 o-3go 
 
 7 -2 
 
 65- 7 
 
 + i5-g 
 
 5 
 
 9 
 
 
 
 4 36 
 
 o'5o5 
 
 249M- 
 
 266-3 
 
 i 6-3 
 
 7 
 
 55 
 
 
 
 
 o-86 7 
 
 58-2 
 
 
 
 
 
 326 
 
 
 4 36 
 
 o- 4 o3 
 
 241-4 
 
 258-6 
 
 -17-7 
 
 o 
 
 5 7 
 
 
 
 
 o-g23 
 
 io 4 -8 
 
 
 
 
 
 ,,3 
 
 
 4 3 7 
 
 o- 4 5 1 
 
 3o8'7 
 
 25 7 ' 7 
 
 + 9-8 
 
 18 
 
 67 
 
 
 Mar. 25 
 
 
 
 
 
 
 (1,8) 
 
 (649) 
 
 (, 4 3o) 
 
 
 4 3g 
 
 o-3g6 
 
 23-3 
 
 27.7-7 
 
 + i 4 -3 
 
 77 
 
 334 
 
 
 
 
 
 
 
 
 
 
 
 
 4 3g 
 
 0' 4 20 
 
 3i'9 
 
 223' 7 
 
 + 14-0 
 
 7 5 
 
 243 
 
 
 
 
 
 
 
 
 
 
 
 Mar. 20* 
 
 
 
 
 
 
 (2 4 5) 
 
 (n,3) 
 
 (277) 
 
 83-555 
 
 439 
 
 o-g3g 290-2 
 
 226-4 
 
 + i6-3 
 
 o 
 
 i3g 
 
 ,0,7 c 
 
 
 
 
 
 
 
 
 
 
 
 43g 
 
 o-go3 
 
 287-4 
 
 2217 
 
 + 12-5 
 
 37 
 
 204 
 
 
 
 
 
 
 
 
 
 
 
 
 441 
 
 o-386 
 
 333- 4 
 
 170-1 
 
 + 13-5 
 
 
 
 24 
 
 
 78-8o3 
 
 
 o-g8o 
 
 2 44 ' 4 
 
 
 
 
 
 77 6 
 
 Mar. 2 6f 
 
 
 
 
 
 
 (37) 
 
 (36 7 ) 
 
 (1017) 
 
 
 4 36 
 
 0-766 
 
 255-o 
 
 2 7 2'8 
 
 i 5-g 
 
 68 
 
 3i8 
 
 
 
 
 
 
 
 
 
 
 
 
 4 36 
 
 0-739 
 
 25 4 - 4 
 
 2 7 0'3 
 
 -16-2 
 
 5 
 
 4 
 
 632 c 
 
 
 
 
 
 
 
 
 
 
 
 4 36 
 
 o-66 4 
 
 252-3 
 
 263-g 
 
 16-9 
 
 2 
 
 6 
 
 
 84-751 
 
 4 3g 
 
 0-979 
 
 28 4 -5 
 
 220-3 
 
 + 12-7 
 
 76 
 
 '9' 
 
 
 
 4 3 7 
 
 o - 63o 
 
 294-1 
 
 258-2 
 
 + 9'3 
 
 4 
 
 20 
 
 
 Mar. 27* 
 
 
 
 
 
 
 (76) 
 
 ('9') 
 
 
 
 439 
 
 0-371 
 
 349-4 
 
 226-7 
 
 + i4'4 
 
 85 
 
 424 
 
 
 
 
 
 
 
 
 
 
 
 
 439 
 
 0-357 
 
 35g-g 
 
 222-7 
 
 + i3-g 
 
 68 
 
 338 
 
 
 85"g57 
 
 
 0-909 
 
 293-3 
 
 
 
 
 
 122 
 
 
 4406 
 
 0-731 
 
 102-7 
 
 175-6 
 
 14-0 
 
 
 
 23 
 
 
 
 
 o-g38 
 
 2or5 
 
 
 
 
 
 118 
 
 
 
 o-85 4 
 
 67-7 
 
 
 
 
 
 I 4 8q 
 
 
 
 o- 7 55 
 
 2gg-2 
 
 
 
 
 
 , 9 5 
 
 
 
 0-906 
 
 I22'I 
 
 
 
 
 
 885 
 
 
 442 
 
 0-844 
 
 i o8-3 
 
 70-6 
 
 19-0 
 
 8 
 
 4 
 
 302/ 
 
 Mar. 21* 
 
 
 
 
 
 
 (232) 
 
 ("43) 
 
 (3 7 82) 
 
 
 443 
 
 0-888 
 
 66-6 
 
 70-0 
 
 4-17-3 
 
 8 
 
 55 
 
 334 np 
 
 
 
 
 
 
 
 
 
 
 Mar. 28 
 
 
 
 
 
 
 (16) 
 
 (69) 
 
 (1071) 
 
 80-143 
 
 
 o'goi 
 
 2937 
 
 
 
 
 
 79 
 
 
 
 
 
 
 
 
 
 
 
 
 0-828 
 
 287-8 
 
 
 
 
 
 367 
 
 
 
 
 
 
 
 
 
 
 
 
 o-6 4 5 
 
 3oi-3 
 
 
 
 
 
 I 4 3 
 
 87-016 
 
 
 0-728 
 
 233-5 
 
 
 
 
 
 ,78 
 
 
 4 36 
 
 o-g22 
 
 255-3 
 
 273-0 
 
 -16-2 
 
 ii3 
 
 343 
 
 
 
 444 
 
 0-868 
 
 291-1 
 
 171-0 
 
 + I 4 '6 
 
 2 
 
 7 
 
 494 n 
 
 
 4 36 
 
 o-8q3 
 
 255-7 
 
 268-9 
 
 i 5-g 
 
 o 
 
 37 
 
 
 
 442 
 
 o-6g5 
 
 uo-g 
 
 71-1 
 
 -19-1 
 
 6 
 
 '7 
 
 3o,/ 
 
 
 4 36 
 
 0-860 
 
 254-3 
 
 264-8 
 
 17-0 
 
 9 
 
 44 
 
 1 383 
 
 
 44 5 
 
 0-777 
 
 6o - 7 
 
 6g-2 
 
 + I/-7 
 
 16 
 
 95 
 
 607 / 
 
 
 4-'9 
 
 o 5o3 
 
 3 1 5-4 
 
 226-3 
 
 + 14-5 
 
 IOO 
 
 468 
 
 
 Mar. 2g 
 
 
 
 
 
 
 (24) 
 
 (H9) 
 
 (i58o) 
 
 
 4 3 9 
 
 0-456 
 
 321-6 
 
 22 rg 
 
 + 14-3 
 
 95 
 
 4 5i 
 
 
 
 
 
 
 
 
 
 
 
 
 44' 
 
 0-653 
 
 7O"3 
 
 i66-g 
 
 + 7-3 
 
 8 
 
 3, 
 
 
 87-910 
 
 
 o-g3q 
 
 2go-8 
 
 
 
 
 
 5 7 6 
 
 
 
 0-709 
 
 123-8 
 
 
 
 
 
 266 
 
 
 
 o-8g3 
 
 247-3 
 
 
 
 
 
 411 
 
 
 
 0-858 
 
 108-2 
 
 
 
 
 
 204 
 
 
 442 
 
 0-548 
 
 1 15'5 
 
 71-1 
 
 19-2 
 
 
 
 42 
 
 
 Mar. 22 
 
 
 
 
 
 
 (325) 
 
 (i3 7 4) 
 
 (2 44 2) 
 
 
 44 3 
 
 0-666 
 
 52-1 
 
 6g-o 
 
 + 187 
 
 6 
 
 5 9 
 
 
 
 
 
 
 
 
 
 
 
 
 
 0-785 
 
 1 14-0 
 
 
 
 
 
 i38 
 
 80-676 
 
 
 0-886 
 
 286-6 
 
 
 
 
 
 i5oi 
 
 
 
 o-8i5 
 
 52-7 
 
 
 
 
 
 i3 7 
 
 
 4 36 
 
 o-g5g 
 
 255-2 
 
 272-6 
 
 -16-2 
 
 55 
 
 208 
 
 
 Mar. 3o 
 
 
 
 
 
 
 (6) 
 
 (10,) 
 
 (1262) 
 
 
 4 36 
 
 0-912 
 
 200-0 
 
 264-4 
 
 -i6-5 
 
 4 
 
 '9 
 
 2205 C 
 
 
 
 
 
 
 
 
 
 
 
 4^9 
 
 o-58o 
 
 3O7-3 
 
 226-2 
 
 + 14-5 
 
 87 
 
 425 
 
 
 88-964 
 
 
 0-978 
 
 288-3 
 
 
 
 
 
 118 
 
 
 4 3g 
 
 0-523 
 
 3l2'0 
 
 221-4 
 
 4-14-1 
 
 83 
 
 3/9 
 
 
 
 
 0-967 
 
 248-7 
 
 
 
 
 
 ii3 
 
 
 44 ' 
 
 o - 5 44 
 
 54-3 
 
 171-1 
 
 + 12-3 
 
 iq 
 
 56 
 
 
 
 
 o-q3o 
 
 240-5 
 
 
 
 
 
 170 
 
 Mar. 23* 
 
 
 
 
 
 
 (248) 
 
 (,087) 
 
 (3706) 
 
 
 44 5 
 
 o- 4 3g 
 
 i6g-6 
 
 83-3 
 
 3rg 
 
 28 
 
 6, 
 
 
 * Indian photo. The Areas of Spots and FaeuUe are expressed in M illionths of the Sun's visible Hemisphere. t Melbourne photo. 
 
 
REDUCTION OF SOLAR PHOTOGKAPHS THROUGHOUT 1878-1881. 
 
 51 
 
 MEASURES of POSITIONS and AKEAS of SPOTS and FACUL/E upon the SDK'S DISK on PHOTOGRAPUS taken in the YEAK 1881 continued. 
 
 
 
 Dig- 
 
 
 HELIOORAPIIIC 
 
 SPOTS. 
 
 FACUL*. 
 
 
 
 Dis- 
 
 
 HELIOOKAl'IIIC 
 
 SPOTS. 
 
 FACCLJC. 
 
 fttta 
 
 Solar 
 Time. 
 
 No. of 
 Group, 
 and 
 Letter 
 for 
 Spot. 
 
 taace 
 
 from 
 Centre 
 
 in 
 
 terms 
 
 of 
 
 Sun's 
 Radius. 
 
 Position 
 Ani;le 
 
 f'rulll 
 
 Sun's 
 Axis. 
 
 
 
 
 Menu 
 Solar 
 Time. 
 
 No. of 
 Group, 
 and 
 Letter 
 for 
 Spot. 
 
 tance 
 from 
 Centre 
 in 
 terms 
 of 
 Sun's 
 Radius. 
 
 Position 
 Angle 
 from 
 Sun's 
 Axis. 
 
 
 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 
 I'M UK A 
 for each 
 Spot 
 (and for 
 Day). 
 
 An-ii ( 
 \VHuLK 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 r.MliKA 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 WHOLE 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 1881. 
 
 
 
 o 
 
 o 
 
 
 
 
 
 1881. 
 
 
 
 
 
 
 
 o 
 
 
 
 
 88' i 'g64 
 
 445 
 
 0-490 
 
 t63-i 
 
 787 
 
 -3 4 -5 
 
 8 
 
 76 
 
 
 go d 'ooq 
 
 
 0-9 1 5 
 
 297'3 
 
 
 
 
 
 5l5 
 
 
 442 
 
 0-349 
 
 i3i-3 
 
 7 2-6 
 
 ig'5 
 
 
 
 7 
 
 
 
 44 5 
 
 0-965 
 
 241-0 
 
 84-6 
 
 2g-6 
 
 39 
 
 248 
 
 409*7' 
 
 
 443 
 
 o-536 
 
 3 7 '2 
 
 68-7 
 
 + 19-1 
 
 
 
 26 
 
 
 
 45o 
 
 0-716 
 
 201-4 
 
 54-1 
 
 -17-6 
 
 7 
 
 01 
 
 23op 
 
 
 
 0-919 
 
 62-3 
 
 
 
 
 
 215 
 
 
 45 1 
 
 0-675 
 
 47'9 
 
 336-4 
 
 + 2I'8 
 
 >9 
 
 96 
 
 370 / 
 
 Miir. 3 1 
 
 
 
 
 
 
 (36) 
 
 (-70) 
 
 (606) 
 
 
 4 5 Z 
 
 o-g56 
 
 112-6 
 
 295-1 
 
 -23-3 
 
 i5 
 
 5i 
 
 433 p 
 
 
 
 
 
 
 
 
 
 
 
 
 0-867 
 
 66-2 
 
 
 
 
 
 32g 
 
 
 
 
 
 
 
 
 
 
 Apr. 6 
 
 
 
 
 
 
 (80) 
 
 (446) 
 
 (2286) 
 
 89-908 
 
 
 0-973 
 
 240-5 
 
 
 
 
 
 187 
 
 
 
 
 
 
 
 
 
 
 
 
 0-922 
 
 249-8 
 
 
 
 
 
 i55 
 
 95-925 
 
 
 0-973 
 
 235-7 
 
 
 
 
 
 387 
 
 
 
 0-700 
 
 3i2-5 
 
 
 
 
 
 1 35 
 
 
 
 0-929 
 
 299-5 
 
 
 
 
 
 358 
 
 
 446 
 
 0-818 
 
 2 4 3-8 
 
 i3o'o 
 
 25-o 
 
 
 
 1 1 
 
 
 
 480 
 
 0-840 
 
 252-1 
 
 53-q 
 
 -i 8-3 
 
 o 
 
 16 
 
 247 c 
 
 
 44 5 
 
 o- 4 36 
 
 195-4 
 
 84-0 
 
 -3n 
 
 26 
 
 192 
 
 
 
 4 5i 
 
 0-075 
 
 35-5 
 
 335-7 
 
 + 22-2 
 
 20 
 
 62 
 
 
 
 445 
 
 0-477 
 
 181-4 
 
 77-0 
 
 34-8 
 
 22 147 
 
 
 
 452 
 
 0-871 
 
 11 3-9 
 
 296-6 
 
 -23-7 
 
 
 
 55 
 
 
 
 442 
 
 0-2.36 
 
 164-7 
 
 72-4 
 
 ig-5 
 
 O 
 
 21 
 
 
 
 453 
 
 0-996 
 
 io5'5 
 
 270-5 
 
 i5 - g 
 
 
 
 401 
 
 
 
 447 
 
 o-g56 
 
 72-1 
 
 6-0 
 
 + i5-o 
 
 
 
 *7 
 
 400 p 
 
 
 
 0747 
 
 3 9 -3 
 
 
 
 
 
 1 85 
 
 
 448 
 
 0-969 
 
 i to-6 
 
 35g - 4 
 
 21-5 
 
 23 
 
 9 
 
 256 / 
 
 
 
 0-81 3 
 
 63-8 
 
 
 
 
 
 210 
 
 Apr. i 
 
 
 
 
 
 
 (70 
 
 (493) 
 
 (u33) 
 
 Apr. 7 
 
 
 
 
 
 
 (20) 
 
 (53 4 ) 
 
 (2099) 
 
 
 
 
 
 
 
 
 
 
 97'oi3 
 
 
 0-924 
 
 253-5 
 
 
 
 
 
 3o8 
 
 91-019 
 
 
 0-0,21 
 
 245-7 
 
 
 
 
 
 209 
 
 
 4 5i 
 
 0-486 
 
 i3- 7 
 
 335-3 
 
 4-22-a 
 
 II 
 
 57 
 
 
 
 
 0-844 
 
 3oi-2 
 
 
 
 
 
 365 
 
 
 4 52 
 
 o- 7 3 4 
 
 116-6 
 
 297-0 
 
 23-3 
 
 8 
 
 4* 
 
 I28S/ 
 
 
 449 
 
 0-664 
 
 304-4 
 
 g6-3 
 
 + 16-8 
 
 o 
 
 21 
 
 
 
 454 i o-g63 
 
 60-2 
 
 273-5 
 
 4-26-6 
 
 o 
 
 3i 
 
 212 C 
 
 
 44.) 
 
 0-537 
 
 219-5 
 
 84-7 
 
 3o-2 
 
 3i 
 
 189 
 
 
 
 4 53 
 
 0-945 
 
 104-9 
 
 270-9 
 
 16-0 
 
 52 
 
 224 
 
 54O 
 
 
 44 5 
 
 O"53 1 
 
 201-0 
 
 75-3 
 
 -35-6 
 
 36 
 
 i5o 
 
 
 
 
 o-g85 
 
 77-0 
 
 
 
 
 
 4 25 
 
 
 447 
 
 O'854 
 
 68-0 
 
 6-7 
 
 4-i5-i 
 
 2 
 
 6 
 
 37/ 
 
 Apr. 8 
 
 
 
 
 
 
 (70 
 
 (35+) 
 
 (i6i3) 
 
 
 448 
 
 0-880 
 
 1 1 o-3 
 
 35g-8 
 
 20-9 
 
 18 
 
 9i 
 
 5 9 5/ 
 
 
 
 
 
 
 
 
 
 
 Apr. 2 
 
 
 
 
 
 
 (87) 
 
 (457) 
 
 (i5 4 o) 
 
 g8'oi2 
 
 
 0-984 
 
 253-5 
 
 
 
 
 
 240 
 
 
 
 
 
 
 
 
 
 
 
 
 0-968 
 
 293-7 
 
 
 
 
 
 72 
 
 
 
 
 
 
 
 
 
 
 
 4 5i 
 
 0-483 
 
 3487 
 
 335-1 
 
 4-22-3 
 
 18 
 
 56 
 
 
 91-754 
 
 
 0-883 
 
 
 
 
 
 
 775 
 
 
 452 
 
 0-548 
 
 122-6 
 
 299-5 
 
 22-2 
 
 9 
 
 4 
 
 
 
 445 
 
 0-635 
 
 227-3 
 
 84-6 
 
 -3o-8 
 
 47 
 
 164 
 
 
 
 4 52 
 
 0-628 
 
 I2O'3 
 
 293-3 
 
 z3-2 
 
 8 
 
 38 
 
 
 
 445 
 
 o-58g 
 
 212-9 
 
 74-8 
 
 35-4 
 
 28 
 
 104 
 
 
 
 4 5 4 
 
 0-872 
 
 54-9 
 
 276-5 
 
 + 26-6 
 
 
 
 "9 
 
 i8o/ 
 
 
 448 
 
 0-790 
 
 ii ri 
 
 o-i 
 
 20-5 
 
 10 
 
 65 
 
 8 4 8/ 
 
 
 4 53 
 
 0-847 
 
 IO4-5 
 
 271-2 
 
 -i 5-3 
 
 38 
 
 290 
 
 710 c 
 
 
 4 5i 
 
 0-976 
 
 66-5 
 
 338'3 
 
 + 21-2 
 
 21 
 
 100 
 
 697 P 
 
 
 
 o-g3i 
 
 73-8 
 
 
 
 
 
 473 
 
 Apr. 3 
 
 
 
 
 
 
 (106) 
 
 (433) 
 
 (2320) 
 
 Apr. 9 
 
 
 
 
 
 
 (73) 
 
 (4*7) 
 
 (i6 7 5) 
 
 
 
 
 
 
 
 
 
 
 98722 
 
 4 5 1 
 
 0-528 
 
 333-0 
 
 334-9 
 
 + 22-4 
 
 ii 
 
 32 
 
 
 93-084 
 
 
 o-83o 
 
 3o2 - o 
 
 
 
 
 
 597 
 
 
 452 
 
 o-5 1 1 
 
 126-2 
 
 293-5 
 
 -22-7 
 
 
 
 9 
 
 
 
 446 
 
 0796 
 
 236-g 
 
 84-3 
 
 2Q-8 
 
 7i 
 
 226 
 
 
 
 453 
 
 0-703 
 
 io5-i 
 
 271-2 
 
 -1 5-2 
 
 34 
 
 182 
 
 
 
 44 5 
 
 0725 224-7 
 
 7 3-i 
 
 -35-8 
 
 H 
 
 96 
 
 617 c 
 
 Apr. 10* 
 
 
 
 
 
 
 (45) 
 
 (223) 
 
 
 
 460 
 
 0-340 233-5 
 
 5o-g 
 
 -17-6 
 
 
 
 5 9 
 
 
 
 
 
 
 
 
 
 
 
 
 448 
 
 0-089 I' 5'3 
 
 o-o 
 
 -19-7 
 
 9 
 
 26 
 
 498 / 
 
 
 
 
 
 
 
 
 
 
 
 4 5 1 
 
 0-887 6l '9 
 
 337-3 
 
 + 21-4 
 
 >7 
 
 126 
 
 395 / 
 
 99-809 
 
 401 
 
 0-645 
 
 3 1 6-4 
 
 334-3 
 
 4-22-8 
 
 17 
 
 29 
 
 
 
 
 0-749 
 
 5 ro 
 
 
 
 
 
 120 
 
 
 4540 
 
 0-548 
 
 118-6 
 
 274-9 
 
 20- 1 
 
 o 
 
 13 
 
 
 Apr. 4 
 
 
 
 
 
 
 (121) 
 
 (533) 
 
 (2227) 
 
 
 4 53 
 
 0-570 
 
 108-1 
 
 271-6 
 
 i5'o 
 
 29 
 
 162 
 
 
 
 
 
 
 
 
 
 
 
 Apr. n* 
 
 
 
 
 
 
 (46) 
 
 (204) 
 
 
 93-786 
 
 
 0-963 
 
 288-5 
 
 
 
 
 
 435 
 
 1 00-730 
 
 
 o-83g 
 
 245-7 
 
 
 
 
 
 882 
 
 
 
 o'85o 
 
 298-4 
 
 
 
 
 946 
 
 
 4 5i 
 
 o-753 
 
 307- 1 
 
 333-g 
 
 4-22-7 
 
 5 
 
 17 
 
 3i6 e 
 
 
 44 5 
 
 0-875 
 
 23g-| 
 
 84-1 :-2g-8 
 
 32 
 
 232 
 
 
 
 4540 
 
 o-36g 
 
 l3O'2 
 
 276-1 
 
 ig-2 
 
 2 
 
 9 
 
 
 
 44 5 
 
 0798 
 
 228-7 
 
 72-6 36-0 
 
 1 1 
 
 3g 
 
 1070 c 
 
 
 4 53 
 
 o-3gg 114-7 
 
 271-5 
 
 -14-8 
 
 37 
 
 202 
 
 
 
 460 
 
 0-472 
 
 242-8 
 
 5ri 18-0 
 
 27 
 
 65 
 
 
 
 405 
 
 0-568 124-8 
 
 262'g 
 
 -23-8 
 
 
 
 H 
 
 
 
 448 
 
 0-470 
 
 121-3 
 
 35g-g 
 
 -19-7 
 
 9 
 
 '4 
 
 
 
 455 
 
 0-612 125-6 
 
 260-0 
 
 -25-6 
 
 8 
 
 "4 
 
 
 
 45 1 
 
 0-8 1 3 
 
 5 7 -6 
 
 337-5 
 
 4-21-7 
 
 27 
 
 9 5 
 
 848 / 
 
 
 406 
 
 0-966 74-7 
 
 220-5 
 
 + i3-i 
 
 
 
 18 
 
 1 l.")2 C 
 
 
 
 0-929 
 
 108-6 
 
 
 
 
 
 lo3g 
 
 
 
 0-8841 ii3-2 
 
 
 
 
 
 836 
 
 Apr. 5* 
 
 
 
 
 
 
 (i 06) 
 
 (445) 
 
 (4338) 
 
 Apr. 12* 
 
 
 
 
 
 
 (50 
 
 (^74) 
 
 (3i86) 
 
 * Indian photo. The Areas of Spots and Faculse are expressed in Millionths of the Sun's visible Hemisphere. 
 
 G 2 
 
52 
 
 REDUCTION OF SOLAR PHOTOGRAPHS THROUGHOUT 1878-1881. 
 
 MEASUBES of POSITIONS and AREAS of SPOTS and FACUL^E upon the SUN'S DISK on PHOTOGRAPHS taken in the YEAR 1881 continued. 
 
 
 
 Dis- 
 tance 
 
 
 IlKl.lnclillMlIU 
 
 SPOTS. 
 
 FACULSE. 
 
 
 
 Dis- 
 tance 
 
 
 HELIOOUAPIHC 
 
 SPOTS. 
 
 FACOL.*. 
 
 
 No. of 
 
 flTM 
 
 11 'A.* 
 
 
 
 
 
 No. of 
 
 f ._, 
 
 i> 
 
 
 
 
 Mean 
 Solar 
 Time. 
 
 Group, 
 and 
 Letter 
 for 
 
 Spot. 
 
 irom 
 Centre 
 in 
 terms 
 of 
 Sun's 
 Radius. 
 
 L OSltlOIl 
 
 Angle 
 from 
 Sun's 
 
 Axis. 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBRA 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 WHOLK 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 Mean 
 Solar 
 Time. 
 
 Group, 
 
 and 
 Letter 
 for 
 Spot. 
 
 rrom 
 Centre 
 in 
 terms 
 of 
 Sun's 
 Radius. 
 
 1 osition 
 Angle 
 from 
 
 Sun's 
 Axis. 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBRA 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 WHOLE 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 1881. 
 
 
 
 o 
 
 
 
 o 
 
 
 
 
 1881. 
 
 
 
 
 
 
 
 o 
 
 
 
 
 loi d -gi I 
 
 
 0-8l6 
 
 2497 
 
 
 
 
 
 497 
 
 I07 d> oi3 
 
 460 
 
 0-732 
 
 1 08-3 
 
 164-0 
 
 16-8 
 
 12 
 
 '9 
 
 
 
 45 1 
 
 0-877 
 
 3oo-2 
 
 333-1 
 
 + 23-1 
 
 
 
 26 
 
 56gs/ 
 
 
 460 
 
 0-776 
 
 106-6 
 
 i5g-g 16-0 
 
 
 
 18 
 
 14.0 c 
 
 
 453 
 
 o-ig5 
 
 447 
 
 271-1 
 
 -'47 
 
 37 
 
 182 
 
 
 
 460 
 
 0-8 1 8 
 
 107-9 
 
 l55-g 17-5 
 
 4 
 
 19 
 
 
 
 4 55 
 
 0-377 
 
 146-5 
 
 264-7 
 
 23-7 
 
 20 
 
 3 4 
 
 
 
 461 
 
 0-906 
 
 79'4 
 
 146-7 + 7-3 
 
 i5 
 
 1 36 
 
 $11 f 
 
 
 455 
 
 0-453 
 
 140-3 
 
 25g-i 
 
 -25-6 
 
 2 
 
 6 
 
 
 
 462 
 
 0-925 
 
 977 
 
 142-5 ' g-o 
 
 o 
 
 8 
 
 io5 * 
 
 
 4 56 
 
 0-878 
 
 7'4 
 
 2ig-2 
 
 + i3'4 
 
 '9 
 
 90 
 
 374 n 
 
 
 463 
 
 '979 
 
 116-1 
 
 l3l'2 
 
 26-6 
 
 o 
 
 3o 
 
 3o5s 
 
 Apr. 1 3 
 
 
 
 
 
 
 (78) 
 
 (338) 
 
 (1440) 
 
 
 
 0-770 
 
 63-3 
 
 
 
 
 
 221 
 
 
 
 
 
 
 
 
 
 
 Apr. 18 
 
 
 
 
 
 
 (i 4 3) 
 
 (774) 
 
 (35gg) 
 
 102728 
 
 
 0-885 
 
 3o6-i 
 
 
 
 
 
 '769 
 
 
 
 
 
 
 
 
 
 
 
 
 0-882 
 
 247'4 
 
 
 
 
 
 728 
 
 107-700 
 
 4 5 4 
 
 0-981 
 
 2977 
 
 276-1 
 
 + 25-g 
 
 
 
 81 
 
 11970 
 
 
 453 
 
 0-170 
 
 204-8 
 
 271-1 
 
 -H-3 
 
 39 
 
 1 63 
 
 
 
 453 
 
 o-g33 
 
 207-5 
 
 270-6 
 
 i 3-5 
 
 35 
 
 123 I i528s 
 
 
 4 55 
 
 o-3 1 1 
 
 '74'4 
 
 265-0 1-23-5 
 
 17 
 
 68 
 
 
 
 4 55 
 
 0-906 
 
 247-8 
 
 266-0 
 
 22-2 
 
 26 
 
 124 
 
 
 
 4 55 
 
 0-345 
 
 1 63- 1 
 
 260-6 
 
 -24-7 
 
 >7 
 
 48 
 
 
 
 455 
 
 0-860 
 
 244-7 
 
 25q-6 
 
 24-3 
 
 9 
 
 3i 
 
 14890 
 
 
 486 
 
 0-788 
 
 67-7 
 
 218-4 
 
 + I3-8 
 
 16 
 
 86 
 
 817 n 
 
 
 4^9 
 
 '499 
 
 3i-g 
 
 185-1 
 
 + 20-1 
 
 i3 
 
 56 
 
 
 
 
 '947 
 
 69-8 
 
 
 
 
 
 446 
 
 
 45g 
 
 o-53i 
 
 36-6 
 
 1817 
 
 4-20-3 
 
 47 
 
 142 
 
 
 Apr. 14* 
 
 
 
 
 
 
 (89) 
 
 (365) 
 
 (3 7 6o) 
 
 
 460 
 
 0-621 
 
 i 10-7 
 
 164-1 
 
 -16-8 
 
 8 
 
 '4 
 
 
 
 
 
 
 
 
 
 
 
 
 460 
 
 o-655 
 
 108-6 
 
 i6i-3 
 
 -i 5-g 
 
 4 
 
 1 1 
 
 
 
 
 
 
 
 
 
 
 
 
 460 
 
 0-713 
 
 109-6 
 
 i56- 7 
 
 -17-5 
 
 9 
 
 23 
 
 
 103-672 
 
 
 0-963 
 
 3o5'i 
 
 
 
 
 
 823 
 
 
 461 
 
 0-817 
 
 77-5 
 
 148-0 
 
 + 7'2 
 
 42 
 
 167 
 
 
 
 
 0-908 
 
 252-3 
 
 
 
 
 
 342 
 
 
 461 
 
 0-870 
 
 76-7 
 
 142-5 
 
 + 8-9 
 
 23 
 
 9' 
 
 656 c 
 
 
 4 5 7 
 
 o'Sgg 
 
 2 47'9 
 
 290-0 
 
 -i 7 -5 
 
 48 
 
 i56 
 
 
 
 462 
 
 0-848 
 
 98-9 
 
 143-2 
 
 10-2 
 
 o 
 
 3 
 
 121 
 
 
 453 
 
 0-324 
 
 241-1 
 
 271-5 
 
 14-1 
 
 27 
 
 i53 
 
 
 
 4 63 
 
 o-g3g 
 
 1 16-1 
 
 i3i-5 
 
 -26-2 
 
 9 
 
 23 
 
 1067 c 
 
 
 455 
 
 o'36 1 
 
 2I2'6 
 
 2667 
 
 23-0 
 
 7 
 
 83 
 
 
 Apr. i g* 
 
 
 
 
 
 
 (225) 
 
 (889) 
 
 (6o58) 
 
 
 455 
 
 0-345 
 
 '97'' 
 
 261-0 
 
 24-5 
 
 o 
 
 4' 
 
 
 
 
 
 
 
 
 
 
 
 
 456 
 
 0-646 
 
 60-8 
 
 219-2 
 
 + 14-0 
 
 i5 
 
 3 4 
 
 
 108785 
 
 455 
 
 '97 
 
 247-3 
 
 263-5 
 
 -23-2 
 
 o 
 
 '94 
 
 i5g8 c 
 
 
 
 0-942 
 
 65- 9 
 
 
 
 
 
 iog5 
 
 
 464 
 
 0-175 
 
 171-2 
 
 185-3 
 
 -H-g 
 
 5 
 
 3i 
 
 
 Apr. i5* 
 
 
 
 
 
 
 (107) 
 
 (467) 
 
 (2260) 
 
 
 4 5g 
 
 0-428 
 
 5-8 
 
 184-3 i + 20-1 
 
 89 
 
 249 
 
 
 
 
 
 
 
 
 
 
 
 
 4^9 
 
 0-466 
 
 3-4 
 
 180-2 + 21-9 
 
 35 
 
 87 
 
 
 
 
 
 
 
 
 
 
 
 
 460 
 
 0-486 
 
 1 16-3 
 
 i5g-g 16-9 
 
 
 
 18 
 
 
 104-698 
 
 4 5 7 
 
 777 
 
 252M 
 
 291-6 
 
 -17-3 
 
 38 
 
 1 53 
 
 
 
 460 
 
 0-534 
 
 I l5'2 
 
 156-6 
 
 -I 7 -5 
 
 '9 
 
 57 
 
 
 
 453 
 
 O"5 21 
 
 251-7 
 
 271-5 
 
 14-0 
 
 28 
 
 1 60 
 
 
 
 461 
 
 o-633 
 
 72-6 
 
 '49' 6 
 
 + 6-g 
 
 5o 
 
 2gi 
 
 
 
 4 55 
 
 o'4g5 
 
 233-5 
 
 266-3 
 
 22'0 
 
 33 
 
 1 63 
 
 
 
 461 
 
 0730 
 
 7i'4 
 
 142-5 
 
 + 9'9 
 
 47 
 
 "7 
 
 75gc 
 
 
 455 
 
 0-447 
 
 223-1 
 
 260-5 
 
 -2 4 -I 
 
 o 
 
 68 
 
 
 
 462 
 
 0-703 
 
 io3-o 
 
 142-5 
 
 -127 
 
 
 
 16 
 
 
 
 4 56 
 
 0-482 
 
 46-6 
 
 2ig-g 
 
 -j-14'2 
 
 9 
 
 18 
 
 
 
 
 o-84g 
 
 116-7 
 
 
 
 
 
 1452 
 
 
 
 0-908 
 
 63-o 
 
 
 
 
 
 1064 
 
 Apr. 20* 
 
 
 
 
 
 
 (2 4 5) 
 
 (1060) 
 
 (38og) 
 
 Apr. 1 6* 
 
 
 
 
 
 
 (.08) 
 
 (562) 
 
 (1064) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 109727 
 
 458 
 
 0-752 
 
 243-7 
 
 221-4 
 
 22-8 
 
 10 
 
 2 9 
 
 
 105-699 
 
 457 
 
 0-906 
 
 252-g 
 
 2 9 2'9 
 
 -177 
 
 38 
 
 132 
 
 
 
 4 5g 
 
 0-447 
 
 336-8 
 
 1 85-3 
 
 + '9'4 
 
 18 
 
 104 
 
 
 
 4 5 7 
 
 0743 
 
 249-8 
 
 274-8 
 
 i 8-5 
 
 48 
 
 144 
 
 
 
 4 5g 
 
 0-447 
 
 346-6 
 
 i8o-g 
 
 + 20-8 
 
 18 
 
 77 
 
 
 
 4 53 
 
 0-687 
 
 255-6 
 
 270-8 
 
 -i 3-7 
 
 55 
 
 i5o 
 
 
 
 464 
 
 0-265 
 
 228-5 
 
 186-4 
 
 -14-8 
 
 o 
 
 5 
 
 
 
 455 
 
 0-647 
 
 241-5 
 
 265-4 
 
 22-2 
 
 32 
 
 122 
 
 
 
 464 
 
 0-223 
 
 2 I I'3 
 
 1 8 r5 
 
 15-8 
 
 
 
 8 
 
 
 
 455 
 
 o-5g7 
 
 236-1 
 
 260-4 
 
 23-8 
 
 o 
 
 IOO 
 
 
 
 460 
 
 o-3o8 i32-5 
 
 i6o-g 
 
 -167 
 
 3o 
 
 ill 
 
 
 
 
 0-925 
 
 io5-g 
 
 
 
 
 
 6g3 
 
 
 460 
 
 0-346 134-0 
 
 169-4 
 
 -i 8-6 
 
 7 
 
 '7 
 
 
 Apr. 17* 
 
 
 
 
 
 
 ('73) 
 
 (648) 
 
 (6 9 3) 
 
 
 460 
 
 0-366 
 
 1277 
 
 157-0 
 
 -17-6 
 
 23 
 
 78 
 
 
 
 
 
 
 
 
 
 
 
 
 4620 
 
 0-441 
 
 103'2 
 
 '48-g 
 
 1O'2 
 
 9 
 
 65 
 
 
 107-013 
 
 
 0-906 
 
 25l'0 
 
 
 
 
 
 5g5 
 
 
 461 
 
 '449 
 
 63-i 
 
 i5o-g 
 
 -1- 7'2 
 
 4i 
 
 207 
 
 
 
 
 0-862 
 
 278-7 
 
 
 
 
 
 323 
 
 
 461 
 
 0-027 
 
 6g-i 
 
 145-0 
 
 + 6-6 
 
 2 
 
 8 
 
 
 
 4 5 7 
 
 '994 
 
 252'4 
 
 2g5'2 
 
 i 8-0 
 
 o 
 
 5 9 
 
 494/ 
 
 
 461 
 
 0-577 
 
 64-9 
 
 142-7 
 
 + 1 o-o 
 
 20 
 
 59 
 
 
 
 4 5 4 
 
 '949 
 
 299'9 
 
 276-7 
 
 + 26*2 
 
 4 
 
 28 
 
 353 / 
 
 Apr. 2 1 * 
 
 
 
 
 
 
 (178) 
 
 (5*6) 
 
 
 
 4 53 
 
 0-868 
 
 257-4 
 
 270-7 
 
 -i 3- 4 
 
 38 
 
 184 
 
 377 c 
 
 
 
 
 
 
 
 
 
 
 
 455 
 
 0-845 
 
 2467 
 
 267-2 
 
 22-3 
 
 26 
 
 1 3 4 
 
 208 f 
 
 110-703 
 
 458 
 
 0-883 
 
 2 4 6-g 
 
 223-0 
 
 22-6 
 
 '7 
 
 "9 
 
 
 
 455 
 
 0-787 
 
 243-1 
 
 260-4 
 
 -24-2 
 
 '4 
 
 33 
 
 1670 
 
 
 458 
 
 o-863 
 
 247-8 
 
 220-6 
 
 -21-5 
 
 13 
 
 44 
 
 
 
 458 
 
 0-367 
 
 212-6 
 
 222-7 
 
 23-0 
 
 o 
 
 5 
 
 
 
 4 58 
 
 c-854 
 
 245-8 
 
 219-3 
 
 23-1 
 
 31 
 
 "7 
 
 
 
 408 
 
 0-347 
 
 206-5 
 
 220-0 
 
 -23-1 
 
 
 
 12 
 
 
 
 4 5 9 
 
 o-55g 
 
 317-5 
 
 185-2 
 
 + '9'9 
 
 10 
 
 2 9 
 
 
 
 458 
 
 0-290 
 
 lSg-0 
 
 2l3'2 
 
 -217 
 
 o 
 
 4 
 
 
 
 4 5g 
 
 o-52g 
 
 3217 
 
 181-9 
 
 + 20-0 
 
 o 
 
 72 
 
 
 
 4^9 
 
 0-617 
 
 45-9 
 
 182-2 
 
 + 20-8 
 
 3o 
 
 85 
 
 
 
 460 
 
 0-219 
 
 iSg'i 
 
 163-7 
 
 -I7-2 
 
 21 
 
 I2 4 
 
 
 * Indian photo. The Areas of Spots and Faculse are expressed in Millionths of the Sun's risible Hemisphere. 
 
REDUCTION OF SOLAR PHOTOGRAPHS THROUGHOUT 1878-1881. 
 
 MEASURES of POSITIONS and AREAS of SPOTS and FACULJ, upon the Sun's DISK 011 PHOTOGRAPHS taken in the YEAR 1881 continued. 
 
 
 
 Dis- 
 
 
 HELIOORAVHIO 
 
 SPOTS. 
 
 FACUL*. 
 
 
 
 Dis- 
 
 
 III i HM.iiii'in. 
 
 SPOTS. 
 
 FACULA. 
 
 Mean 
 Solar 
 Time. 
 
 N"<i. of 
 Group, 
 and 
 Letter 
 for 
 Spot. 
 
 tance 
 from 
 Onrre 
 in 
 terms 
 
 of 
 
 Sun's 
 Kadius. 
 
 Position 
 Angle 
 from 
 Bun's 
 
 A\i^. 
 
 
 
 
 Mean 
 Solar 
 Time. 
 
 No. of 
 Group, 
 and 
 Letter 
 for 
 Spot. 
 
 tance 
 from 
 Centre 
 in 
 terms 
 of 
 Sun's 
 Radius. 
 
 Position 
 Angle 
 from 
 Sun's 
 Axis. 
 
 
 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 I'MliKA 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area nf 
 WHOLE 
 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 
 UMBRA. 
 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 WHOLE 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 1881. 
 
 
 
 
 
 o 
 
 o 
 
 
 
 
 l88l. 
 
 
 
 o 
 
 o 
 
 o 
 
 
 
 
 no" 1 7o3 
 
 460 
 
 0-220 
 
 176-2 
 
 160-7 
 
 -17-5 
 
 3 
 
 46 
 
 
 U7 d -8o7 
 
 461 
 
 0-984 
 
 278-9 
 
 146-5 
 
 4- 8-0 
 
 O 
 
 1 60 
 
 1021 C 
 
 
 460 
 
 0-240 164-0 
 
 167-6 l8'l 
 
 3i 
 
 I 4 1 
 
 
 
 
 0-966 
 
 iio'6 
 
 
 
 
 
 384 
 
 
 461 
 
 O - 2OI 
 
 36-2 
 
 I53-OJ4- 6-9 
 
 46 
 
 141 
 
 
 
 
 0-986 
 
 66-5 
 
 
 
 
 
 379 
 
 
 461 
 
 0-398 
 
 So-g 
 
 143-4 
 
 + 9'9 
 
 18 
 
 4 
 
 
 Apr. 29* 
 
 
 
 
 
 
 () 
 
 (1 60) 
 
 (1784) 
 
 Apr. 22* 
 
 
 
 
 
 
 (190) 
 
 (8 7 3) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 118-920 
 
 
 0-960 
 
 25o-5 
 
 
 
 
 
 206 
 
 
 
 
 
 
 
 
 
 
 
 
 0-946 
 
 240-0 
 
 
 
 
 
 307 
 
 1 1 rg32 
 
 
 0-971 
 
 288-8 
 
 
 
 
 
 322 
 
 
 
 0-826 
 
 306-7 
 
 
 
 
 
 3o6 
 
 
 4 58 
 
 0-964 
 
 247-2 
 
 220-3 
 
 -23-2 
 
 5 
 
 82 
 
 2170 
 
 
 466 
 
 0-907 
 
 64-0 
 
 352-1 
 
 4-21-4 
 
 12 
 
 3o 
 
 273/ 
 
 
 4 5 9 
 
 0-722 
 
 3o3-6 
 
 l85'0 
 
 + 19-9 
 
 5 
 
 24 
 
 6o3c 
 
 
 
 0-876 
 
 111-7 
 
 
 
 
 
 212 
 
 
 460 
 
 0-383 235'g 
 
 164-7 
 
 -16-8 
 
 3o 
 
 iq3 
 
 
 Apr. 3o 
 
 
 
 
 
 
 (12) 
 
 (3o) 
 
 (i3o 4 ) 
 
 
 460 
 
 0-324 228-1 
 
 l5 9 - 9 
 
 17-0 
 
 17 
 
 59 
 
 
 
 
 
 
 
 
 
 
 
 
 460 
 
 0-296 219-1 
 
 166-6 
 
 -17-8 
 
 33 
 
 "9 
 
 
 
 
 
 
 
 
 
 
 
 
 461 
 
 O'2OO 323'O 
 
 i5 4 -i 
 
 + 6-8 
 
 28 
 
 H7 
 
 
 119742 
 
 466 
 
 0-816 
 
 6o-5 
 
 352-8 
 
 + 2I-I 
 
 6 
 
 36 
 
 
 
 46, 
 
 0-2 5 1 334-4 
 
 161-7 
 
 + 8-3 
 
 9 
 
 53 
 
 
 
 4660 
 
 0-872 58-g 
 
 347-2 
 
 4-24-5 
 
 10 
 
 4 3 
 
 480 c 
 
 
 461 
 
 0-212 349-3 
 
 I47-7 
 
 + 7-3 
 
 4 
 
 10 
 
 
 
 0-974 
 
 240-6 
 
 
 
 
 
 282 
 
 
 46, 
 
 0-266 9-5 
 
 142-9 
 
 + 10-4 
 
 ii 
 
 44 
 
 
 
 
 o-85i 
 
 304-3 
 
 
 
 
 
 601 
 
 
 
 o-85o 
 
 64-2 
 
 
 
 
 
 36 7 
 
 May i* 
 
 
 
 
 
 
 (16) 
 
 (79) 
 
 (1263) 
 
 
 
 0-944 
 
 I22'O 
 
 
 
 
 
 170 
 
 
 
 
 
 
 
 
 
 
 Apr. 23 
 
 
 
 
 
 
 (52) 
 
 (73i) 
 
 (1679) 
 
 120-762 
 
 466 0-696 
 
 62-6 
 
 352-3 
 
 4-21-g 
 
 
 
 34 
 
 
 1 13764 
 
 465 
 
 0-887 
 
 29V4 
 
 179'9 
 
 4-19-2 
 
 o 
 
 122 
 
 1861 n 
 
 May 2* 
 
 
 
 
 
 
 (o) 
 
 (34) 
 
 
 
 466 j o'859 
 
 297-6 
 
 176-7 
 
 4-20-9 
 
 4' 
 
 214 
 
 
 
 
 
 
 
 
 
 
 
 
 460 
 
 o-6g5 
 
 25ro 
 
 164-4 
 
 16-4 
 
 o 
 
 90 
 
 
 121-898 
 
 0-888 
 
 302-7 
 
 
 
 
 
 224 
 
 
 460 
 
 0-635 
 
 246-4 
 
 168-9 
 
 1 8-3 
 
 
 
 27 
 
 
 
 
 0-837 
 
 261-7 
 
 
 
 
 
 1 08 
 
 
 460 
 
 0-600 
 
 246-9 
 
 1 56-3 
 
 -I 7 -8 
 
 10 
 
 57 
 
 
 
 
 0-807 
 
 229-2 
 
 
 
 
 
 352 
 
 
 46, 
 
 0-687 
 
 288-4 
 
 155-3 
 
 4- 6-9 
 
 46 
 
 I 80 
 
 
 
 467 
 
 0-986 
 
 Il3'2 
 
 293-2 
 
 -23-5 
 
 o 
 
 60 
 
 
 
 461 
 
 0-563 
 
 289-8 
 
 i53'4 
 
 + 7'i 
 
 
 
 3i 
 
 
 
 
 0-849 
 
 64*0 
 
 
 
 
 
 '99 
 
 
 461 0-533 
 
 293-7 
 
 i5r3 
 
 + 6-9 
 
 8 
 
 5 4 
 
 
 May 3 
 
 
 
 
 
 
 (o) 
 
 (60) 
 
 (883) 
 
 
 461 
 
 0-009 
 
 294-3 
 
 149-1 
 
 + 8-1 
 
 o 
 
 9 
 
 
 
 
 
 
 
 
 
 
 
 Apr. 25* 
 
 
 
 
 
 
 (io5) 
 
 (784) 
 
 (1861) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 122-766 
 
 467 
 
 0-939 
 
 113-4 
 
 293-0 
 
 -23-2 
 
 37 
 
 94 
 
 
 i i5 - o55 
 
 0-893 290-5 
 
 
 
 
 
 121 
 
 
 
 o-g53 
 
 u3-3 
 
 
 
 
 
 1426 
 
 
 465 o-g58 293-4 
 
 174-1 
 
 + 20-9 
 
 
 
 149 
 
 7 2 9 S 
 
 May 4 
 
 
 
 
 
 
 (37) 
 
 (94) 
 
 (1426) 
 
 
 460 0-849 253-0 
 
 161-9 
 
 16-8 
 
 4' 
 
 214 
 
 474 c 
 
 
 
 
 
 
 
 
 
 
 
 461 0-800 282-2 
 
 166-9 -f 7-0 
 
 70 
 
 304 
 
 
 
 
 
 
 
 
 
 
 
 
 461 0-700 283-1 
 
 i5i-3 4- 6-8 
 
 3 
 
 4' 
 
 
 124*046 
 
 
 0-929 
 
 23o-8 
 
 
 
 
 
 288 
 
 
 461 
 
 0-708 285-0 
 
 147-6 
 
 + 7'3 
 
 16 
 
 104 
 
 323 c 
 
 
 468 
 
 0-686 
 
 266-6 
 
 28-1 
 
 -11-7 
 
 2 
 
 9 
 
 
 
 460 
 
 0-363 
 
 19-6 
 
 1 1 1-4 
 
 + i5'5 
 
 5 
 
 26 
 
 
 
 468 
 
 0-637 
 
 255-3 
 
 24-2 
 
 I2'O 
 
 O 
 
 2 
 
 
 
 
 0-806 
 
 133-5 
 
 
 
 
 
 232 
 
 
 469 
 
 0-317 
 
 196-1 
 
 360-7 
 
 2IM 
 
 2 
 
 15 
 
 
 Apr. 26 
 
 
 
 
 
 
 (135) 
 
 (838) 
 
 (1899) 
 
 
 469 
 
 0-335 
 
 186-9 
 
 347-5 
 
 22-9 
 
 7 
 
 22 
 
 
 
 
 
 
 
 
 
 
 
 
 47 
 
 0-467 
 
 14-3 
 
 338-1 
 
 4-23-3 
 
 
 
 2 
 
 
 u57 9 3 
 
 
 0-962 
 
 288-1 
 
 
 
 
 
 676 
 
 
 470 
 
 0-486 
 
 16-8 
 
 336-5 
 
 4-24-2 
 
 o 
 
 4 
 
 
 
 460 
 
 '949 
 
 264-7 
 
 166-2 
 
 i5-g 
 
 
 
 102 
 
 I 
 
 
 470 
 
 0-5 1 2 
 
 21-8 
 
 333-3 
 
 4-24-9 
 
 o 
 
 5 
 
 
 
 460 
 
 o-go5 
 
 253-7 
 
 169-2 
 
 -i 6-6 
 
 8 
 
 96 
 
 14380 }! 
 
 
 467 
 
 0-814 
 
 116-1 
 
 292-9 
 
 23-0 
 
 *3 
 
 97 
 
 
 
 460 
 
 0-901 
 
 252-3 
 
 168-6 
 
 -17-8 
 
 
 
 4 5 
 
 1 
 
 
 47' 
 
 0-966 
 
 io3'2 
 
 270-1 
 
 -13-7 
 
 16 
 
 61 
 
 
 
 461 
 
 0-897 
 
 279-8 
 
 167-1 
 
 + 6-9 
 
 9' 
 
 292 
 
 
 
 0-607 
 
 62-8 
 
 
 
 
 
 80 
 
 
 461 
 
 0-860 
 
 280-5 
 
 162-6 
 
 4- 6-8 
 
 10 j 35 
 
 i58oc 
 
 
 0-824 
 
 4<7 
 
 
 
 
 
 67 
 
 
 461 
 
 0-8 1 5 
 
 282-3 
 
 147-6 
 
 + 7'4 
 
 20 
 
 78 
 
 
 
 0-866 
 
 113-7 
 
 
 
 
 
 696 
 
 Apr. 27* 
 
 
 
 
 
 
 (129) 
 
 (647) 
 
 (36 9 4) 
 
 
 0-963 
 
 -6-8 
 
 
 
 
 
 326 
 
 
 
 
 
 
 
 
 
 
 May 5 
 
 
 
 
 
 (5o) 
 
 (217) 
 
 (i35 7 ) 
 
 1 16*899 
 
 
 0-978 
 
 253-2 
 
 
 
 
 
 697 
 
 
 
 
 
 
 
 
 
 
 
 0-786 
 
 239-5 
 
 
 
 
 
 347 
 
 
 
 
 
 
 
 
 
 
 46, 
 
 0-984 
 
 277-3 1 168-7 
 
 + 6-4 
 
 46 
 
 247 
 
 
 124-902 
 
 0-976 
 
 233'7 
 
 
 
 
 So 9 
 
 
 461 
 
 0-960 
 
 277-5 
 
 162-6 
 
 4- 6'o o 
 
 58 
 
 
 
 0-798 
 
 269-0 
 
 
 
 
 
 33 
 
 
 46, 
 
 o-g32 
 
 279'4 
 
 I47-4 
 
 + 7'i 
 
 44 
 
 312 
 
 572 nf 
 
 
 469 0-409 
 
 223-9 
 
 35 1 -5 
 
 20-3 
 
 o 
 
 14 
 
 
 Apr. 28 
 
 
 
 
 
 
 ^90) 
 
 (617) 
 
 (1616) 
 
 
 469 0-391 
 
 2l3'l 
 
 347-3 
 
 -22-4 
 
 
 
 '4 
 
 
 Indian photo. The Areas of Spots and Faculac are expressed in Millionth* of the Sun's visible Hemisphere. 
 
 I Taken as one spot on April 26, Greenwich. 
 
SEDUCTION OF SOLAR PHOTOGRAPHS THROUGHOUT 1878-1881. 
 
 MEASURES of POSITIONS and AREAS of SPOTS and FACUL/E upon the SON'S DISK on PHOTOGRAPHS taken in the YEAR 1881 continued. 
 
 
 
 Dis- 
 tance 
 
 
 HELIOGRAPHIC 
 
 SPOTS. 
 
 FACULA;. 
 
 
 
 Dis- 
 
 
 HELIOGRAPHIC 
 
 SPOTS. 
 
 FACUL.E. 
 
 Mean 
 Solar 
 Time. 
 
 No. of 
 Group, 
 and 
 Letter 
 for 
 Spot. 
 
 from 
 Centre 
 in 
 terms 
 of 
 Sun's 
 Radius. 
 
 Position 
 Angle 
 from 
 Sun's 
 Axis. 
 
 
 
 
 Mean 
 Solar 
 Time. 
 
 No. of 
 Group, 
 and 
 Letter 
 for 
 Spot. 
 
 tance 
 from 
 Centre 
 in 
 terms 
 of 
 Sun's 
 Radius. 
 
 Position 
 Angle 
 from 
 Sun's 
 Axis. 
 
 
 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBRA 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 WHOLE 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBRA 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 WHOLE 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 1881. 
 
 
 
 o 
 
 o 
 
 o 
 
 
 
 
 1881. 
 
 
 
 o 
 
 o 
 
 o 
 
 
 
 
 I24 d 'go2 467 
 
 0-696 
 
 I20'2 
 
 293-3 
 
 23-0 
 
 19 
 
 97 
 
 286/ 
 
 i3o d 'g87 
 
 472 
 
 0-764 
 
 70-2 
 
 206" I 
 
 + l3-i 
 
 53 
 
 241 
 
 
 
 471 
 
 0-898 
 
 lo3-g 
 
 270-3 
 
 i3-g 
 
 3i 
 
 7 
 
 5o4/ 
 
 
 472 
 
 0-822 
 
 71-9 
 
 200*4 
 
 + i3-i 
 
 O 
 
 '9 
 
 
 
 
 O - g2I 
 
 74-0 
 
 
 
 
 
 626 
 
 
 472 
 
 o-85o 
 
 70-7 
 
 1977 
 
 + I4'8 
 
 10 
 
 73 
 
 608 / 
 
 
 0-944 
 
 5 7 '2 
 
 
 
 
 
 164 
 
 May 12 
 
 
 
 
 
 
 (63) 
 
 (333) 
 
 1608) 
 
 May 6 
 
 
 
 
 
 
 (5o) 
 
 (196) 
 
 (2022) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 i3i-go3 
 
 
 o-g36 
 
 3o8-o 
 
 
 
 
 
 228 
 
 125-894 
 
 
 0-917 
 
 258-5 
 
 
 
 
 
 1 3 7 
 
 
 
 0-763 ; 240-0 
 
 
 
 
 
 3io 
 
 
 469 
 
 0-533 
 
 232-1 
 
 3477 
 
 22-0 
 
 2 
 
 9 
 
 
 
 472 
 
 0-6 1 8 
 
 64-0 
 
 206-7 
 
 + I3-5 
 
 4' 
 
 188 
 
 
 
 469 
 
 o'Sig 
 
 228-3 
 
 345-7 
 
 23-1 
 
 O 
 
 4 
 
 
 
 472 
 
 0-685 
 
 67-1 
 
 20PI 
 
 + i3- 4 
 
 o 
 
 23 
 
 
 
 47 
 
 o-53o 
 
 328-2 
 
 338-5 
 
 + 23-5 
 
 4 
 
 6 
 
 
 
 472 
 
 0-729 
 
 66-5 
 
 97'8 
 
 + i5-o 
 
 18 
 
 49 
 
 583/ 
 
 
 470 
 
 o-53i 
 
 334-6 
 
 335-4. 
 
 +25-4 
 
 
 
 7 
 
 
 
 47 3 
 
 0-869 
 
 67-4 
 
 184-0 
 
 + I8-5 
 
 5 
 
 10 
 
 I12 9 / 
 
 
 470 
 
 o-5 10 
 
 336-2 
 
 333-g 
 
 +24-5 
 
 o 
 
 12 
 
 
 
 474 
 
 o-g7o 
 
 83-4 
 
 166-1 
 
 + 5-7 
 
 H 
 
 28 
 
 267 / 
 
 
 467 
 
 o-5 49 
 
 128-5 
 
 293-2 
 
 22-8 
 
 10 
 
 73 
 
 3oo/ 
 
 
 
 o-g65 
 
 io8-5 
 
 
 
 
 
 568 
 
 
 47i 
 
 0-776 
 
 I05'2 
 
 270-6 
 
 13-8 
 
 II 
 
 49 
 
 562 sf 
 
 May i3 
 
 
 
 
 
 
 (78) 
 
 (298) 
 
 (3o85) 
 
 
 
 0-845 
 
 6g-5 
 
 
 
 
 
 283 
 
 
 
 
 
 
 
 
 
 
 May 7 
 
 
 
 
 
 
 (27) 
 
 (160) 
 
 (1282) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 132-972 
 
 
 0-880 
 
 240-8 
 
 
 
 
 
 '74 
 
 
 
 
 
 
 
 
 
 
 472 
 
 0-437 
 
 5i'o 
 
 206-9 
 
 + I3-6 
 
 37 
 
 182 
 
 
 126707 
 
 469 
 
 0-685 
 
 242-6 
 
 35o-5 
 
 20-8 
 
 
 
 20 
 
 
 
 472 
 
 0-565 
 
 57-9 
 
 197-6 
 
 -r-iS-2 
 
 
 
 3i 
 
 
 
 4 6 9 
 
 0-684 
 
 240-3 
 
 348-3 
 
 -21-7 
 
 15 
 
 37 
 
 
 
 474 
 
 0-875 
 
 8i-5 
 
 167-0 
 
 + 6-2 
 
 o 
 
 12 
 
 478 / 
 
 
 47 
 
 o-62g 
 
 3 1 5-5 
 
 338-8 
 
 + 23- 7 
 
 o 
 
 '9 
 
 
 
 
 0-800 
 
 64-0 
 
 
 
 
 
 3 7 2 
 
 
 470 
 
 o-5go 
 
 321-7 
 
 333-7 
 
 + 2 4 -5 
 
 10 
 
 5i 
 
 
 
 
 0-883 
 
 107-8 
 
 
 
 
 
 267 
 
 
 467 
 
 0-437 
 
 141-4 
 
 292-9 
 
 23-o 
 
 1 1 
 
 55 
 
 
 May 14 
 
 
 
 
 
 
 (37) 
 
 (225) 
 
 ('29') 
 
 
 47i 
 
 0-654 
 
 107-8 
 
 270-3 
 
 14-0 
 
 1 1 
 
 32 
 
 
 
 
 
 
 
 
 
 
 
 
 
 o'83g 
 
 117-3 
 
 
 
 
 
 404 
 
 
 
 
 
 
 
 
 
 
 May 8 
 
 
 
 
 
 
 (47) 
 
 (214). 
 
 (404) 
 
 133-663 
 
 
 0-921 
 
 240-8 
 
 
 
 
 
 189 
 
 
 
 
 
 
 
 
 
 
 
 472 
 
 0-335 
 
 34-1 
 
 207-0 
 
 + i3'7 
 
 3i 
 
 igo 
 
 
 
 
 
 
 
 
 
 
 
 
 474 
 
 0-783 
 
 797 
 
 167-5 
 
 + 6-5 
 
 5 
 
 2 4 
 
 
 127-983 
 
 469 
 
 0-836 
 
 246-3 
 
 348-3 
 
 -21-4 
 
 
 
 36 
 
 22 7P 
 
 
 
 o-86g 
 
 108-7 
 
 
 
 
 
 428 
 
 
 47 
 
 0-773 
 
 3o5-i 
 
 337-0 
 
 + 24-1 
 
 o 
 
 26 
 
 
 
 
 0-888 
 
 797 
 
 
 
 
 
 ii33 
 
 
 470 
 
 0-739 
 
 308-7 
 
 332-6 
 
 -r-25-i 
 
 '9 
 
 100 
 
 433 sp 
 
 May i5 
 
 
 
 
 
 
 (36) 
 
 (21 4 ) 
 
 (i 7 5o) 
 
 
 467 
 
 o-338 
 
 '79'4 
 
 2g3-i 
 
 -22-7 
 
 9 
 
 3i 
 
 
 
 
 
 
 
 
 
 
 
 
 47 ' 
 
 0-422 
 
 1 1 6-6 
 
 270-5 
 
 -i3- 7 
 
 4 
 
 17 
 
 
 134-766 
 
 
 0-9 1 5 
 
 291-3 
 
 
 
 
 
 364 
 
 
 471 
 
 o-5o5 
 
 124-8 
 
 267-3 
 
 19-4 
 
 i3 
 
 7 1 
 
 
 
 
 0-908 
 
 246-5 
 
 
 
 
 
 563 
 
 
 
 0-924 
 
 120-3 
 
 
 
 
 
 1 54 
 
 
 472 
 
 0-282 
 
 347-6 
 
 207-1 
 
 + i3- 7 
 
 3i 
 
 I 9 3 
 
 
 
 
 0-934 
 
 69-5 
 
 
 
 
 
 2OI 
 
 
 474 
 
 o-5g8 
 
 757 
 
 1 68-0 
 
 + 6-6 
 
 6 
 
 20 
 
 
 May 9 
 
 
 
 
 
 
 (45) 
 
 (281) 
 
 (io65) 
 
 May 1 6* 
 
 
 0-846 
 
 76-2 
 
 
 
 (37) 
 
 (213) 
 
 428 
 (i355) 
 
 128-821 
 
 
 o-g38 
 
 297-0 
 
 
 
 
 
 608 
 
 135-700 
 
 
 0-924 
 
 249'4 
 
 
 
 
 
 1060 
 
 
 4 6 9 
 
 o-gii 
 
 247-3 
 
 346-8 
 
 -21-9 
 
 o 
 
 35 
 
 842 P 
 
 
 472 
 
 0-387 
 
 3 1 6-0 
 
 207-2 
 
 + 14-0 
 
 32 
 
 I 4 2 
 
 
 
 470 
 4720 
 
 0-829 
 0-406 
 
 3o2-8 
 3 4 6- 7 
 
 332-0 
 287-8 
 
 + 247 
 
 + 20-2 
 
 29 
 9 
 
 67 
 18 
 
 26gp 
 
 May 17* 
 
 
 0-883 
 
 105-7 
 
 
 
 (32) 
 
 (I 4 2) 
 
 347 
 ('47) 
 
 
 471 
 
 0-282 
 
 l3l'2 
 
 269-5 
 
 i 3-6 
 
 10 
 
 22 
 
 
 
 
 
 
 
 
 
 
 
 
 471 
 
 0-377 
 
 140-9 
 
 267-5 
 
 -19-9 
 
 4 
 
 16 
 
 
 i37 - o55 
 
 
 o-8g5 
 
 241-2 
 
 
 
 
 
 223 
 
 
 472 
 
 o-g83 
 0-897 
 
 76-6 
 
 iig-5 
 
 204-0 
 
 + 12-5 
 
 35 
 
 u3 
 
 442 
 
 
 472 
 
 0-790 
 o'6o5 
 
 3oo-3 
 2q6'6 
 
 207-0 
 
 -1- H'o 
 
 3i 
 
 148 
 
 4i3 
 
 
 
 o-gi3 
 
 68-1 
 
 
 
 
 
 4'9 
 
 
 476 
 
 0-461 
 
 332-7 
 
 186-4 
 
 -|- 22'I 
 
 o 
 
 2 9 
 
 
 May 10 
 
 
 
 
 
 
 (77) 
 
 (271) 
 
 (z58o) 
 
 May 1 8 
 
 
 0-818 
 
 127-7 
 
 
 
 (3i) 
 
 (177) 
 
 247 
 (893) 
 
 129-935 
 May ii 
 
 469 
 472 
 472 
 
 472 
 
 0-945 
 0-982 
 o-8g5 
 0-929 
 0-949 
 
 2977 
 2477 
 73-5 
 74-2 
 73-3 
 
 346-5 
 2o5-8 
 200-8 
 
 197-6 
 
 22'4 
 
 -H3-4 
 + i3-5 
 
 + H'8 
 
 o 
 3i 
 
 o 
 
 8 
 (3 9 ) 
 
 53 
 124 
 
 44 
 67 
 (288) 
 
 1 55 
 210 c 
 
 3g8 c 
 (763) 
 
 137-941 
 
 476 
 
 472 
 47 5 
 477 
 
 0-846 
 o-85g 
 0-742 
 0-571 
 
 0-521 
 
 240-2 
 300-7 
 291-5 
 3i5'7 
 201-5 
 
 210-8 
 
 207-0 
 187-0 
 174-3 
 
 + 24-8 
 
 + '4'4 
 
 + 22-3 
 
 3o'7 
 
 8 
 
 3 7 
 3 
 1 1 
 
 21 
 
 i5? 
 8 
 35 
 
 235 
 
 479 s 
 
 26l/ 
 
 * Indian photo. The Areas of Spots and Facula; are expressed in Millionths of the Sun's visible Hemisphere. 
 
REDUCTION OF SOLAR PHOTOGUAPHS THROUGHOUT 1878-1881. 
 
 55 
 
 MEASURES of POSITIONS and AREAS of SPOTS and FACUL.E upon the SUN'S DISK on PHOTOGRAPHS taken iu the YEAR 1881 contintied. 
 
 
 Dis- 
 
 
 HELIOGRAPHIC 
 
 Srors. 
 
 K.i. i i i.. 
 
 
 Dis- 
 
 
 HELIonRAPHlC 
 
 SPOTS. 
 
 FACIIL.E. 
 
 
 No. of * 
 
 
 
 
 
 
 1 No. of 
 
 tance 
 
 
 
 
 
 Mean 
 Solar 
 Time. 
 
 L^ttr j^ 
 for 
 
 SP 01 - Sun's 
 Radius. 
 
 Position 
 Angle 
 from 
 Sun's 
 Axis. 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBRA 
 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 WHOLE 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 Mean 
 Solar 
 Time. 
 
 Group, 
 and 
 Letter 
 for 
 Spot. 
 
 from 
 Centre 
 in 
 terms 
 of 
 Sun's 
 liiiilius. 
 
 Position 
 Angle 
 from 
 Sun's 
 Axis. 
 
 Longi- 
 tude. 
 
 Lati 
 tude. 
 
 Area of 
 UMBRA 
 
 for each 
 Spot 
 (and for 
 Day). 
 
 Are* of 
 WHOLE 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 1881. 
 
 
 
 o 
 
 
 
 o 
 
 
 
 
 1881. 
 
 
 
 o 
 
 
 
 o 
 
 
 
 
 l37 d '94I 
 
 478 
 
 0-460 
 
 328-0 
 
 176-6 
 
 + 21-0 
 
 1 
 
 5 
 
 
 l42 d -886 
 
 482 
 
 O'SlO 
 
 65-2 
 
 45-3 
 
 -r-ig-0 
 
 O 
 
 27 
 
 igi c 
 
 
 
 0-688 
 
 i3r5 
 
 
 
 
 
 182 
 
 
 
 0-882 
 
 134-5 
 
 
 
 
 
 176 
 
 
 
 0-858 
 
 113-7 
 
 
 
 
 
 '49 
 
 May 24 
 
 
 
 
 
 
 (84) 
 
 (385) 
 
 (2543) 
 
 
 
 0-884 
 
 58-o 
 
 
 
 
 
 2 4 5 
 
 
 
 
 
 
 
 
 
 
 May 19 
 
 
 
 
 
 
 (60) 
 
 (226) 
 
 
 I43'8g6 
 
 
 0-925 
 
 281-5 
 
 
 
 
 
 33g 
 
 
 
 
 
 
 
 
 
 
 
 
 0-872 
 
 297-5 
 
 
 
 
 
 346 
 
 
 
 
 
 
 
 
 
 
 
 480 
 
 0-982 
 
 245-2 
 
 i6ri 
 
 -2 4 -6 
 
 
 
 35 
 
 33i *f 
 
 i38-g3i 
 
 . 
 
 0-960 
 
 243-8 
 
 
 
 
 
 143 
 
 
 481 0-471 
 
 197-2 
 
 91*8 
 
 -27-8 
 
 42 
 
 219 
 
 
 
 472 
 
 0-870 
 
 287-9 
 
 207-0 
 
 + 14-6 
 
 28 
 
 164 
 
 618 n 
 
 
 48 1 0-453 
 
 1897 
 
 877 
 
 -2 7 -6 
 
 i3 
 
 23 
 
 
 
 477 
 
 0-625 
 
 221-3 
 
 176-6 
 
 29-0 
 
 3i 
 
 92 
 
 
 
 481 0-471 
 
 184-9 
 
 85-4 
 
 -29-1 
 
 7 
 
 16 
 
 
 
 477 
 
 0-600 
 
 212-6 
 
 170-7 3rg 
 
 6 
 
 5o 
 
 
 
 482 
 
 o-5go 
 
 52-5 
 
 53-o 
 
 + '9'9 
 
 3o 
 
 109 
 
 
 
 478 
 
 o-583 
 
 3i ri 
 
 176-3 ,4-20-9 
 
 o 
 
 6 
 
 
 
 482 
 
 0-636 
 
 55-7 
 
 48-9 
 
 + 20-0 
 
 9 
 
 20 
 
 
 May 20 
 
 
 
 
 
 
 (65) 
 
 (3'2) 
 
 (1258) 
 
 
 482 
 
 0-682 
 
 58-8 
 
 44-6 
 
 + I9-6 
 
 36 
 
 79 
 
 
 
 
 
 
 
 
 
 
 
 May 25 
 
 
 
 
 
 
 ('3 7 ) 
 
 (5oi) 
 
 (1016) 
 
 139-917 
 
 
 0-027 
 
 244-7 
 
 
 
 
 
 79 
 
 144-783 
 
 
 o-g68 
 
 282-3 
 
 
 
 
 
 322 
 
 
 472 
 
 0-960 
 
 285-6 
 
 2o8-g 
 
 + I4-5 
 
 7 
 
 98 
 
 1213 
 
 
 481 
 
 o-5 4 6 
 
 214-6 
 
 91-4 
 
 -277 
 
 43 
 
 196 
 
 
 
 477 
 
 0-765 
 
 23l'2 
 
 179-5 
 
 -297 
 
 i3 
 
 6g 
 
 
 
 481 
 
 0-517 
 
 207-2 
 
 86-5 
 
 28-3 
 
 4 
 
 3 4 
 
 
 
 477 
 
 0-706 
 
 222-8 
 
 170-8 
 
 32'4 
 
 4 
 
 '7 
 
 
 
 482 
 
 0-460 
 
 38-6 
 
 53-3 
 
 + 20-O 
 
 22 
 
 IOO 
 
 
 
 479 
 
 o-53i 
 
 240-9 
 
 i65'2 
 
 1 6-3 
 
 
 
 7 
 
 
 
 482 
 
 o-523 
 
 46-2 
 
 47*4 
 
 4-20-2 
 
 15 
 
 67 
 
 
 
 480 
 
 o-56i 
 
 221-0 
 
 i6o-5 
 
 26-4 
 
 3o 
 
 9 5 
 
 
 
 
 o-974 
 
 I 12*3 
 
 
 
 
 
 676 
 
 
 480 
 
 0-544 
 
 213-6 
 
 i56-3 
 
 28-3 
 
 18 
 
 53 
 
 
 May a6 
 
 
 
 
 
 
 (84) 
 
 (397) 
 
 (998) 
 
 
 
 0-941 
 
 65-o 
 
 
 
 
 
 238 
 
 
 
 
 
 
 
 
 
 
 May 21 
 
 
 
 
 
 
 (72) 
 
 (33g) 
 
 (i53o) 
 
 145-784 
 
 481 
 
 0-672 
 
 2277 
 
 917 
 
 -277 
 
 33 
 
 205 
 
 
 
 
 
 
 
 
 
 
 
 
 481 
 
 o-632 
 
 224-5 
 
 87-6 
 
 -27-6 
 
 u 
 
 9' 
 
 
 140-691 
 
 
 0-974 
 
 286-1 
 
 
 
 
 
 3g2 
 
 
 482 
 
 o-365 
 
 117 
 
 53-2 
 
 + '9'9 
 
 18 
 
 7' 
 
 
 
 
 0-912 
 
 293-6 
 
 
 
 
 
 gi3 
 
 
 482 
 
 o-38o 
 
 22'2 
 
 49"o 
 
 + 19-5 
 
 4 
 
 44 
 
 
 
 477 
 
 o-85i 
 
 235-1 
 
 178-8 
 
 -3o-i 
 
 '9 
 
 47 
 
 
 
 482 
 
 0-437 
 
 2 7 -5 
 
 4 5-2 
 
 + 217 
 
 i3 
 
 73 
 
 
 
 480 
 
 0-661 
 
 23o-o 
 
 i5g-8 
 
 26-0 
 
 22 
 
 in 
 
 
 
 4 85 
 
 o-947 
 
 99-7 
 
 346-8 
 
 - 9-5 
 
 o 
 
 7' 
 
 
 
 480 
 
 0-626 
 
 222-6 
 
 154-0 28-8 
 
 21 
 
 40 
 
 
 
 4 85 
 
 o-g63 
 
 100-1 
 
 343-7 
 
 lO'O 
 
 3o 
 
 '44 
 
 io63 c 
 
 
 481 
 
 0-679 
 
 i3i-2 
 
 go'O 27*9 
 
 4 
 
 20 
 
 
 
 485 
 
 o-g83 
 
 ior3 
 
 338-5 
 
 *" I I ."> 
 
 52 
 
 33 1 
 
 
 
 481 
 
 0-712 
 
 I2g-5 
 
 86-8 
 
 -28-1 
 
 2 
 
 28 
 
 
 
 
 o-g36 
 
 I 12-3 
 
 
 
 
 
 112 
 
 May 22* 
 
 
 
 
 
 
 (66) 
 
 (246) 
 
 (i3o5) 
 
 May 27* 
 
 
 
 
 
 
 
 (161) 
 
 (io3o) 
 
 (20 7 5) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 142-063 
 
 
 o-g35 
 
 294-0 
 
 
 
 
 
 7 5o 
 
 146-692 
 
 481 
 
 0776 
 
 234-6 
 
 9'9 
 
 -27-3 
 
 47 
 
 246 
 
 
 
 
 0-822 283-2 
 
 
 
 
 
 683 
 
 
 481 
 
 0-742 
 
 23r3 
 
 86-7 
 
 -28-2 
 
 
 
 68 
 
 
 
 477 
 
 o-g55 239-4 
 
 177-6 29-6 
 
 16 
 
 58 
 
 
 
 482 
 
 0-375 
 
 340-5 
 
 53-3 
 
 + '97 
 
 16 
 
 53 
 
 
 
 477 o-gig 236-2 
 
 170-2 3 1-4 
 
 '7 
 
 44 
 
 58 1 c 
 
 
 482 
 
 0-356 35o- 1 
 
 49-4 
 
 4-19-9 
 
 5 
 
 49 
 
 
 
 480 0-835 240-6 
 
 160-2 25 p o 
 
 23 
 
 60 
 
 377 
 
 
 482 
 
 0-374 2-g 
 
 44-6 
 
 4-20-g 
 
 
 
 5o 
 
 
 
 480 0-787 
 
 233-6 
 
 i53'i 28-8 
 
 2 
 
 9 
 
 '79 ;> 
 
 
 484 
 
 0-829 1 12-6 
 
 35r8 
 
 -ig-i 
 
 o 
 
 32 
 
 
 
 481 o-5o3 
 
 i5i'5 
 
 91-4 -27-5 
 
 23 
 
 97 
 
 
 
 485 
 
 0-860 99-7 
 
 346-9 
 
 - 8-8 
 
 35 
 
 io5 
 
 
 
 481 
 
 o'56 1 
 
 '44'7 
 
 85'4 
 
 28-5 
 
 20 
 
 60 
 
 
 
 485 0-886 
 
 100-2 
 
 3 4 3'8 
 
 - 9'4 
 
 3g 
 
 i.'n 
 
 i58g c 
 
 
 482 
 
 o'85g 
 
 66-3 
 
 5o-7 
 
 + '9'4 
 
 04 
 
 99 
 
 
 
 485 
 
 0-925 
 
 IO1'2 
 
 338-5 
 
 -10-7 
 
 i5o 
 
 355 
 
 
 
 482 0-904 
 
 67-2 
 
 44'9 
 
 4-19-8 
 
 3 
 
 ig 
 
 igoc 
 
 
 
 0-888 
 
 116-8 
 
 
 
 
 
 1027 
 
 
 0-836 
 
 l3l'2 
 
 
 
 
 
 IOI 
 
 May 28* 
 
 
 
 
 
 
 (292) 
 
 (nog) 
 
 (2616) 
 
 May 23 
 
 
 
 
 
 (58) 
 
 (446) 
 
 (2861) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 147-601 
 
 481 
 
 0-874 
 
 239-3 
 
 9'9 
 
 26-g 
 
 47 
 
 225 
 
 
 142-886 
 
 0-978 
 
 294-3 
 
 
 
 
 
 432 
 
 
 481 
 
 o-83g 237-5 
 
 86-3 
 
 -2 7 -3 
 
 
 
 5i 
 
 
 
 0-948 
 
 28o-3 
 
 
 
 
 
 3i8 
 
 
 482 
 
 0-474 3i8-i 
 
 53-3 
 
 + 19*8 
 
 i5 
 
 5 4 
 
 
 
 
 0-825 
 
 284-7 
 
 
 
 
 
 323 
 
 
 482 
 
 0-444 322-5 
 
 5o-3 
 
 + 19-8 
 
 ii 
 
 49 
 
 
 
 477 
 
 0-968 
 
 237-6 
 
 i6g-5 
 
 3r6 
 
 o 
 
 32 
 
 493 c 
 
 
 482 
 
 0-413 334-1 
 
 44-8 
 
 4-20-9 
 
 o 
 
 25 
 
 
 
 480 
 
 0-916 
 
 243-6 
 
 i6o-3 
 
 -24-6 
 
 i5 
 
 48 
 
 35g n 
 
 
 484 
 
 0-692 1 1 5-2 
 
 352-8 17-7 
 
 o 
 
 5 
 
 
 
 480 
 
 0-871 
 
 23 7 -3 
 
 i52-6 
 
 -28-8 
 
 
 
 9 
 
 201 c 
 
 
 484 
 
 0-700 1167 
 
 352-1 ig'o 
 
 
 
 21 
 
 
 
 481 
 
 0-450 
 
 172-0 
 
 92-0 
 
 27-7 
 
 22 
 
 io3 
 
 
 
 485 
 
 0-729 101*4 
 
 347-6 8-g 
 
 >7 
 
 79 
 
 
 
 481 
 
 0-489 
 
 161-0 
 
 85'7 
 
 -28-8 
 
 I 1 
 
 38 
 
 
 
 485 
 
 O'76g ioi-5 
 
 344-1 - 9-3 
 
 26 
 
 161 
 
 7 3gc 
 
 
 482 0-748 
 
 6r6 
 
 5rg 
 
 + 19-8 
 
 36 
 
 i 1.3 
 
 
 
 4 85 
 
 0-826 102-6 
 
 3387 
 
 i 0-9 
 
 i3o 
 
 376 
 
 
 
 482 
 
 0772 
 
 63-4 
 
 49'3 
 
 + .9-2 
 
 o 
 
 i5 
 
 
 May 29* 
 
 
 
 
 
 (246) 
 
 (1046) 
 
 (739) 
 
 * Indian photo. The Areas of Spots and Faculae are expressed in Millionths of the Sun's visible Hemisphere. 
 
REDUCTION OF SOLAR PHOTOGRAPHS THBOUQHOUT 1878-1881. 
 
 MEASURES of POSITIONS and AREAS of SPOTS and FACUL.S: upon the SUN'S DISK on PHOTOGRAPHS taken in the YEAR 1881 continued. 
 
 
 
 Dis- 
 
 
 HELIOGBAFHIC 
 
 SPOTS. 
 
 FACUL.S:. 
 
 
 
 Dis- 
 
 
 HELIOOEAPHIC SPOTS. 
 
 FACUL.E. 
 
 Mean 
 Solar 
 Time. 
 
 No. of 
 Group, 
 and 
 Letter 
 for 
 Spot. 
 
 tance 
 from 
 Centre 
 in 
 terms 
 of 
 Sun's 
 Radius. 
 
 Position 
 Angle 
 from 
 Sun's 
 Axis. 
 
 
 
 
 Mean 
 Solar 
 Time. 
 
 No. of 
 jroup, 
 and 
 Letter 
 for 
 Spot. 
 
 tance 
 from 
 Centre 
 in 
 terms 
 of 
 Sun's 
 Radius. 
 
 Position 
 Angle 
 from 
 Sun's 
 Axis. 
 
 
 
 Longi- Lti- 
 j 
 tude. tode. 
 
 Area of 
 UMBRA 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 WHOLE 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBRA 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 WHOLE 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 l88l. 
 
 
 
 
 
 o 
 
 
 
 
 
 
 1881. 
 
 
 
 o 
 
 o 
 
 
 
 
 
 
 148-992 
 
 481 
 
 0-976 
 
 242-6 
 
 91-3 
 
 -26-8 
 
 83 
 
 3i8 
 
 428 if 
 
 
 486 
 
 0'35 1 
 
 23 1 -4 
 
 339-3 
 
 -12*7 
 
 
 
 '4 
 
 
 
 482 
 
 0-670 
 
 3oi-8 
 
 52-5 
 
 + 20-1 
 
 H 
 
 9 
 
 167 c 
 
 
 486 
 
 0-298 
 
 240-5 
 
 338-2 
 
 - 8-5 78 
 
 33 1 
 
 
 
 483 
 
 0-617 
 
 333-5 
 
 34-4 
 
 +32-8 
 
 O 
 
 16 
 
 
 
 487 
 
 0-671 
 
 60*1 
 
 296-1 
 
 + 21-3 24 
 
 88 
 
 
 
 483 
 
 0-61 1 
 
 328-2 
 
 3 7 *2 
 
 + 3o-6 
 
 o 
 
 1 1 
 
 
 
 487 
 
 0-626 
 
 64-6 
 
 290-1 
 
 + 21*1 
 
 28 
 
 1 55 
 
 
 
 484 
 
 0-492 
 
 i3o-2 
 
 352-0 
 
 19-0 
 
 o 
 
 6 
 
 
 
 
 0-838 
 
 66-3 
 
 
 
 
 
 1 34 
 
 
 485 
 
 0-478 
 
 108-0 
 
 348-0 
 
 9-0 
 
 II 
 
 81 
 
 
 
 
 0-840 
 
 1 1 2- 7 
 
 
 
 
 
 312 
 
 
 485 
 
 0-529 
 
 107-6 
 
 344-7 
 
 - 97 
 
 '9 
 
 142 
 
 
 June 3 
 
 
 
 
 
 
 (207) 
 
 (944) 
 
 (446) 
 
 
 485 
 
 0-6 1 5 
 
 107-8 
 
 338-8 
 
 -n-3 
 
 116 
 
 647 
 
 716 c 
 
 
 
 
 
 
 
 
 
 
 
 
 0-703 
 
 i3i-i 
 
 
 
 
 
 1 5 4 
 
 153-goi 
 
 
 0-736 
 
 2 4 3- 7 
 
 
 
 
 
 340 
 
 
 
 0-824 
 
 121-7 
 
 
 
 
 
 i55 
 
 
 486 
 
 0-621 
 
 264-7 
 
 3 47 -6 
 
 - 9'4 
 
 -9 
 
 1 06 
 
 
 
 
 0-928 
 
 84-0 
 
 
 
 
 
 67 
 
 
 486 
 
 0-569 
 
 264-9 
 
 343"9 
 
 8-5 
 
 i3 
 
 32 
 
 
 
 
 0-963 
 
 697 
 
 
 
 
 
 168 
 
 
 486 
 
 0-669 
 
 261-6 
 
 3 4 3-5 
 
 10-3 
 
 12 
 
 26 
 
 
 May 3o 
 
 
 
 
 
 
 (2 4 3) 
 
 (I2II) 
 
 (i83 4 ) 
 
 
 486 
 
 o-532 
 
 261-4 
 
 3 4 ro 
 
 - 9-8 
 
 n 
 
 56 
 
 
 
 
 
 
 
 
 
 
 
 
 486 
 
 0-489 
 
 253-5 
 
 338-5 
 
 8-0 
 
 47 
 
 3oi 
 
 499 c 
 
 149*896 
 
 
 o-g36 
 
 299-8 
 
 
 
 
 
 161 
 
 
 487 
 
 0-430 
 
 34-9 
 
 296-2 
 
 + 20*5 
 
 23 
 
 124 
 
 
 
 
 0-704 
 
 319-8 
 
 
 
 
 io3 
 
 
 487 
 
 0-487 
 
 41-8 
 
 290-1 
 
 -f-21'2 
 
 3i 
 
 203 
 
 
 
 482 
 
 0-795 
 
 296-0 
 
 62-7 
 
 + 20-0 II 
 
 42 
 
 472 nf 
 
 
 
 o- 7 38 
 
 118-8 
 
 
 
 
 
 283 
 
 
 485 
 
 0-297 
 
 118-7 
 
 348-2 
 
 8-6 14 
 
 57 
 
 
 June 4 
 
 
 
 
 
 
 (i 56) 
 
 (848) 
 
 (1122) 
 
 
 485 
 
 0-349 
 
 1 1 6-8 
 
 346-0 
 
 9-6 20 
 
 126 
 
 
 
 
 
 
 
 
 
 
 
 
 485 
 
 0-460 
 
 n3-6 
 
 338-6 
 
 10-8 128 
 
 702 
 
 
 1 64*694 
 
 
 0-789 
 
 246-1 
 
 
 
 
 
 699 
 
 
 486 
 
 0-711 
 
 127-0 
 
 324-6 
 
 267 
 
 o 
 
 g 
 
 1 08 c 
 
 
 486 
 
 0-738 
 
 266-9 
 
 347-8 
 
 - 9*5 
 
 24 
 
 78 
 
 646 c 
 
 
 487 
 
 0-970 
 
 66-3 
 
 289-1 
 
 + 22-8 
 
 9 
 
 33 
 
 474 *P 
 
 
 486 
 
 0-694 
 
 268-1 
 
 344*3 
 
 8-1 
 
 o 
 
 3o 
 
 
 
 
 o-85o 
 
 83-2 
 
 
 
 
 
 73 
 
 
 486 
 
 0-621 
 
 266-9 
 
 338*7 
 
 - 8-0 
 
 53 
 
 164 
 
 
 
 
 0-866 
 
 io3-8 
 
 
 
 
 
 7* 
 
 
 486 
 
 0-617 
 
 253-0 
 
 337-g 
 
 10-3 
 
 
 
 40 
 
 
 May 3 1 
 
 
 
 
 
 
 (182) 
 
 (969) 
 
 (1464) 
 
 
 487 
 
 0-367 
 
 12-2 
 
 296-5 
 
 + 2I'I 
 
 12 
 
 48 
 
 
 
 
 
 
 
 
 
 
 
 
 487 
 
 0-353 
 
 I4M 
 
 2g6-o 
 
 + 2O'O 
 
 7 
 
 27 
 
 
 i So'giS 
 
 
 0-864 
 
 294-5 
 
 
 
 
 
 692 
 
 
 487 
 
 o-36i 
 
 1 6-0 
 
 2g5-i 
 
 + 20-3 
 
 7 
 
 27 
 
 
 
 486 
 
 O'I2I 
 
 1 83- 1 
 
 35o-2 
 
 - 7 -3 
 
 
 
 4 
 
 
 
 487 
 
 0-406 
 
 27-2 
 
 289-8 
 
 + 21*2 
 
 27 
 
 116 
 
 
 
 485 
 486 
 
 0-146 
 0-167 
 
 170-9 
 1 65- 1 
 
 348-5 
 347-3 
 
 8-6 
 
 - 9-6 
 
 
 
 3 
 
 u 
 
 40 
 
 
 June 5-| 
 
 
 o-838 
 
 7-2 
 
 
 
 (i3o) 
 
 (620) 
 
 604 
 (1848) 
 
 
 4 85 
 
 0-176 
 
 1 56-3 
 
 3457 
 
 - 9-6 
 
 26 
 
 124 
 
 
 
 
 
 
 
 
 
 
 
 4 85 
 
 0-252 
 
 133-6 
 
 33g-2 
 
 10-3 
 
 168 
 
 9 3i 
 
 
 
 
 
 
 
 
 
 
 
 
 487 
 
 0-847 
 
 63- 4 
 
 296-2 
 
 + 22'0 
 
 10 
 
 29 
 
 
 1 66*040 
 
 
 0-877 
 
 238-5 
 
 
 
 
 
 298 
 
 
 487 
 
 0-898 
 
 63-7 
 
 288-9 
 
 -r-23-3 
 
 II 
 
 5 7 
 
 53oc 
 
 
 
 0-410 
 
 297-3 
 
 
 
 
 
 83 
 
 
 
 0-914 
 
 118-7 
 
 
 
 
 
 110 
 
 
 486 
 
 0-918 
 
 269-6 
 
 348-0 
 
 - 9'5 
 
 12 
 
 26 
 
 
 June i 
 
 
 
 
 
 
 (207) 
 
 (1196) 
 
 (1232) 
 
 
 486 
 
 0-898 
 
 261-1 
 
 346-4 
 
 - 7-9 
 
 O 
 
 10 
 
 
 
 
 
 
 
 
 
 
 
 
 486 
 
 0-846 
 
 260*6 
 
 33g-i 
 
 - 7-8 
 
 22 
 
 64 
 
 n85c 
 
 
 
 
 
 
 
 
 
 
 
 487 
 
 0-426 
 
 326-2 
 
 296-7 
 
 -f-20-g 
 
 9 
 
 25 
 
 
 161-904 
 
 
 0-946 
 
 292-8 
 
 
 
 
 
 676 
 
 
 487 
 
 0-384 
 
 340-4 
 
 290-0 
 
 + 21-4 
 
 22 
 
 79 
 
 
 
 4 85 
 
 0-264 
 
 234-2 
 
 348-7 
 
 - 8-8 
 
 o 
 
 4 
 
 
 
 487 
 
 o-3gi 
 
 3-8 
 
 280-4 
 
 + 23-1 
 
 O 
 
 6 
 
 
 
 485 
 
 0-235 
 
 226-6 
 
 346-5 
 
 - 97 
 
 18 
 
 in 
 
 
 
 487 
 
 0-406 
 
 9-6 
 
 277-8 
 
 + 237 
 
 O 
 
 3 
 
 
 
 485 
 4 85 
 
 0-198 
 0-167 
 
 207-8 
 189-1 
 
 342-1 
 338-3 
 
 10-3 
 
 - 97 
 
 3 4 
 94 
 
 23g 
 466 
 
 
 June 6 
 
 
 0-368 
 
 122-5 
 
 
 
 (65) 
 
 (213) 
 
 348 
 09H) 
 
 
 487 
 
 0-723 
 
 5g-3 . 296-0 +21-4 
 
 26 
 
 9 3 
 
 
 
 
 
 
 
 
 
 
 
 
 487 
 
 0-767 
 
 6 1 -3 290-7 
 
 + 21-3 
 
 3 4 
 
 89 
 
 
 
 
 
 
 
 
 
 
 
 487 
 
 797 
 
 60-2 288-2 
 
 + 23-1 
 
 o 
 
 24 
 
 !+/ 
 
 1 58-o32 
 
 
 0-990 
 
 269-6 
 
 
 
 
 
 326 
 
 
 
 0-923 
 
 71-2 
 
 
 
 
 
 216 
 
 
 
 o'g53 
 
 297-2 
 
 
 
 
 
 280 
 
 
 
 o-g3o 
 
 1 10-8 
 
 
 
 
 
 220 
 
 
 
 o'g33 
 
 241-0 
 
 
 
 
 
 3l3 
 
 June 2 
 
 
 .7 
 
 i 
 
 
 (206) 
 
 (1026) 
 
 (II 9 6) 
 
 
 487 
 487 
 
 o-63o 
 0-555 
 
 304-4 
 
 3i3-2 
 
 289-4 
 281-6 
 
 + 2I-2 
 + 22-7 
 
 7 
 ii 
 
 23 
 
 -9 
 
 445 P 
 
 
 
 
 
 
 
 
 
 
 487 
 
 o-558 
 
 317-6 
 
 280-0 
 
 + 247 
 
 o 
 
 8 
 
 
 i52-g38 
 
 4 85 
 485 
 4 85 
 
 0-436 
 0-370 
 0-370 
 
 248-6 ' 3~47'3 9'3 
 246-4 343-0 ; 8-6 
 241-0 '342-0 io'6 
 
 24 
 '4 
 
 23 
 
 87 
 
 102 
 6 9 
 
 
 
 487 
 488 
 488 
 
 0-644 
 0-438 
 
 0-491 
 _ .0 } 
 
 322*0 
 
 5ri 
 53-1 
 
 Afi'T 
 
 277-4 
 234-9 
 23 1*4 
 
 + 26-7 
 
 + i6-3 
 + 17*5 
 
 4 
 
 2 
 
 4 
 
 29 
 16 
 16 
 
 261 
 
 
 485 
 485 
 486 
 
 o-35g 
 o-33o 
 o-33g 
 
 236-3 340-7 
 246-2 340-7 
 240-0 340-3 
 
 u-6 o 
 
 7-8 5 
 -9-9: n 
 
 '9 
 28 
 5i 
 
 1 
 
 June 8 
 
 
 O o7o 
 o-g88 
 
 DO / 
 119-0 
 
 
 
 (28) 
 
 (no) 
 
 617 
 
 (2132) 
 
 The Areas of Spots and Faculs are expressed in Millionth* of the Sun's -risible Hemisphere. t Melbourne photo. 
 
REDUCTION OF SOLAR PHOTOCKAPUS THROUGHOUT 1878-1881, 
 
 57 
 
 MKASUI;ES of POSITIONS mid AKEAS of SPOTS mid FACUI../E upon tin- Srx's DISK on PIIOTOGKAIMIS taken in the YEAR 1881 continued. 
 
 
 
 Dis- 
 
 IlKLUXiK.U-IlIC 
 
 SPOTS. 
 
 FACUL.*:. 
 
 
 
 Dis- 
 
 
 IlKLIOUKAl-1110 
 
 SPOTS. 
 
 KACTI..T:. 
 
 Mean 
 Solar 
 rime. 
 
 Ho. of 
 
 Group, 
 and 
 Letter 
 for 
 Spot. 
 
 tance 
 from 
 
 Centre 
 in 
 terms 
 of 
 Sun's 
 
 Position 
 
 Angle 
 from 
 Sun's 
 
 
 
 
 Mean 
 Solar 
 Time. 
 
 No. of 
 Group, 
 and 
 Letter 
 for 
 Spot. 
 
 tance 
 from 
 Centre 
 in 
 terms 
 of 
 Sun's 
 
 Position 
 Angle 
 from 
 Sun's 
 Axis. 
 
 
 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area (if 
 UMBRA 
 
 lor earli 
 Spot 
 (and for 
 
 Area of 
 WHOLE 
 
 for each 
 
 Spot 
 (and for 
 
 Area for 
 each 
 Group 
 (and for 
 
 Longi- 
 tude. 
 
 Lati 
 tude. 
 
 Area of 
 UMBRA 
 for each 
 Spot 
 (and for 
 
 Area of 
 WHOLK 
 for each 
 Spot 
 (and for 
 
 Area for 
 each 
 Group 
 (and for 
 Davl 
 
 
 
 Radio*. 
 
 
 
 Day). 
 
 Day). 
 
 Da,). 
 
 
 
 Uadius. 
 
 
 
 
 Day). 
 
 Day). 
 
 ' '-i > j . 
 
 1881. 
 
 
 
 o 
 
 o 
 
 o 
 
 
 
 
 .881. 
 
 
 
 
 
 o 
 
 o 
 
 
 
 j 
 
 l58 d -6q8 
 
 487 
 
 0-726 
 
 2 99 -2 
 
 289-4 
 
 4-2TI 
 
 O 
 
 29 
 
 
 1 63 d - 90 1 
 
 49 
 
 o-5o6 
 
 172-6 
 
 173-7 
 
 28-8 
 
 
 
 II 
 
 
 
 487 
 
 0-607 
 
 3oo'o 
 
 282-1 
 
 4-22-8 
 
 1 1 
 
 26 
 
 
 
 49' 
 
 o-3o8 
 
 I25'9 
 
 163-4 
 
 9-2 
 
 '4 
 
 28 
 
 
 
 487 
 
 0-648 
 
 3o8-6 
 
 280-4 
 
 + 24-3 
 
 6 
 
 22 
 
 
 
 49' 
 
 o-33g 
 
 I26-I 
 
 161*9 
 
 10-3 
 
 o 
 
 5 
 
 
 
 487 
 
 O'6iq 
 
 3i3-3 
 
 276-6 
 
 + 25-5 
 
 1 1 
 
 40 
 
 
 
 49' 
 
 0-405 
 
 116-8 
 
 156-6 
 
 - 9'4 
 
 o 
 
 7 
 
 
 
 488 
 
 0-3q6 
 
 40-7 
 
 i3l'i 
 
 4-18-0 
 
 
 
 18 
 
 
 
 495 
 
 0-680 
 
 1 1 8-6 
 
 i3g-2 
 
 i 8-0 
 
 9 
 
 '9 
 
 
 
 489 
 
 0-924 
 
 74-5 
 
 180- 1 
 
 4-i4'5 
 
 3 9 
 
 270 
 
 ioo8/ 
 
 
 495 
 
 0-712 
 
 118-1 
 
 136-6 
 
 -i 8-7 
 
 o 
 
 22 
 
 78 c 
 
 
 
 0-848 
 
 67-9 
 
 
 
 
 
 342 
 
 
 494 
 
 0-867 
 
 116-2 
 
 121-3 
 
 21-8 
 
 .6 
 
 1 08 
 
 49' / 
 
 
 
 0-976 
 
 121-0 
 
 
 
 
 
 i3.)6 
 
 June 14 
 
 
 
 
 
 
 (83) 
 
 (5i8) 
 
 (io56) 
 
 June 9* 
 
 
 
 
 
 
 (67) 
 
 (405) 
 
 (2696) 
 
 
 
 
 
 
 
 
 
 
 .06-937 
 
 487 
 
 0-829 
 
 297-9 
 
 283-1 
 
 4-23-2 
 
 i5 
 
 39 
 
 
 164-711 
 
 
 0-921 
 
 288-5 
 
 
 
 
 
 36o 
 
 
 487 
 
 O'SlO 
 
 299-8 
 
 280-6 
 
 4-24-2 
 
 
 
 23 
 
 I 123.S/' 
 
 
 
 0-870 
 
 235-2 
 
 
 
 
 
 734 
 
 
 489 
 
 0-792 
 
 71-7 
 
 179-6 
 
 4-14-8 
 
 82 
 
 3o6 
 
 
 
 492 
 
 0-732 
 
 290-9 
 
 212-4 
 
 4-16-0 
 
 o 
 
 44 
 
 
 
 489 
 
 0-821 72-3 
 
 176-7 
 
 + '4'9 
 
 o 
 
 26 
 
 1258/ 
 
 
 492 
 
 0-686 
 
 293-9 
 
 208-0 
 
 4-17-' 
 
 9 
 
 3o 
 
 
 
 49 
 
 0-863 I25'2 
 
 176-6 
 
 29-3 
 
 i5 
 
 36 
 
 
 
 489 
 
 o-3 1 6 
 
 320-6 
 
 179-2 
 
 4-15-4 
 
 3o 
 
 17' 
 
 
 
 49 
 
 o-g2O 122-7 
 
 167-9 
 
 29-5 
 
 o 
 
 29 
 
 i3o4<- 
 
 
 489 
 
 0-282 
 
 326-0 
 
 176-5 
 
 414-8 
 
 2 
 
 60 
 
 
 
 49' 
 
 o-g3i 
 
 ioc-5 
 
 162-5 
 
 - g-5 
 
 '4 
 
 67 
 
 6oi/ 
 
 
 49 
 
 o-5o8 
 
 193-7 
 
 175-0 
 
 -28-2 
 
 O 
 
 44 
 
 190 c 
 
 June 10 
 
 
 
 
 
 
 ('26) 
 
 (526) 
 
 (4286) 
 
 
 49' 
 
 0-194 
 
 '61-9 
 
 163-7 
 
 - 9'3 
 
 3 
 
 i5 
 
 
 
 
 
 
 
 
 
 
 
 
 491 
 
 0-2 IO 
 
 i5i'4 
 
 161*4 
 
 - 9-3 
 
 o 
 
 24 
 
 
 160-91 1 
 
 
 0-865 
 
 244-8 
 
 
 
 
 
 124 
 
 
 49' 
 
 0-248 
 
 141-1 
 
 i58-i 
 
 9'8 
 
 
 
 15 
 
 
 
 487 0-928 
 
 294-8 
 
 283-8 
 
 4 23-2 
 
 
 
 10 
 
 738 c 
 
 
 49' 
 
 0-257 
 
 |33'4 
 
 i56'4 
 
 - 8-9 
 
 o 
 
 22 
 
 
 
 489 0-647 
 
 67-8 
 
 179*4 
 
 4-H'8 
 
 5o 
 
 244 
 
 
 
 495 
 
 o-53g 
 
 128-5 
 
 140-9 
 
 18-4 
 
 20 
 
 39 
 
 
 
 489 o'68o 
 
 68-7 
 
 176-8 
 
 + '4'9 
 
 9 
 
 no 
 
 '449/ 
 
 
 495 
 
 0-602 
 
 124-5 
 
 i35- 7 
 
 l8-g 
 
 21 
 
 5o 
 
 
 
 490 0-761 
 
 i3o-g 
 
 176-5 
 
 29-2 
 
 i5 
 
 40 
 
 
 
 494 
 
 0-776 
 
 120-4 
 
 12. 'I 
 
 22'2 
 
 29 
 
 io5 
 
 
 
 49 
 
 0-775 
 
 128-2 
 
 174-1 
 
 28-0 
 
 
 
 5 
 
 
 
 4g5a 
 
 o-g84 
 
 85-g 
 
 8 7 -7 
 
 + 4'3 
 
 27 
 
 73 
 
 
 
 49 
 
 0-838 
 
 126-9 
 
 167-3 
 
 29-6 
 
 
 
 3o 
 
 979/ 
 
 
 496 
 
 o-ggS 
 
 1 17-2 
 
 84-2 
 
 27-0 
 
 
 
 i5g 
 
 
 
 49' 
 
 o-838 
 
 102-7 
 
 161-6 
 
 10- 1 
 
 12 
 
 109 
 
 
 .June 1 5* 
 
 
 
 
 
 
 ('4') 
 
 (85i) 
 
 (1284) 
 
 
 49' 
 
 0-863 
 
 99'9 
 
 158-6 
 
 8-1 
 
 
 
 12 
 
 
 
 
 
 
 
 
 
 
 
 
 49' 
 
 0-880 
 
 101-4 
 
 i56-2 
 
 - 9-6 
 
 9 
 
 78 
 
 8070 
 
 
 
 
 
 
 
 
 
 
 June 1 1 
 
 
 
 
 
 
 (95) 
 
 (638) 
 
 (497) 
 
 165-705 
 
 489 
 
 0-479 
 
 3oo-g 
 
 I79-2 
 
 4-15-5 
 
 25 
 
 176 
 
 
 
 
 
 
 
 
 
 
 
 
 495 
 
 0-405 
 
 i5o'2 
 
 141-8 
 
 19-2 
 
 18 
 
 72 
 
 
 162-917 
 
 
 0-914 
 
 245-2 
 
 
 
 
 
 I 7 3 
 
 
 495 
 
 0-459 
 
 i3g-3 
 
 135-7 
 
 i8-g 
 
 '9 
 
 75 
 
 
 
 
 0-819 
 
 233-8 
 
 
 
 
 
 191 
 
 
 494 
 
 0-643 
 
 128-2 
 
 I 2 1-2 
 
 2 2 '2 
 
 i5 
 
 97 
 
 
 
 492 
 492 
 
 0-433 
 o-3g6 
 
 3o5-6 
 3i rg 
 
 212-4 
 208-8 
 
 4-1 5-5 
 4-i6-3 
 
 o 
 o 
 
 4 
 4 
 
 
 June i 6* 
 
 496 
 
 o- 9 56 
 
 iig-i 
 
 84-4 
 
 -2 7 -2 
 
 39 
 (116) 
 
 i3 4 
 (55 4 ) 
 
 56o c 
 (56o) 
 
 
 489 o-3 1 3 
 
 3g"5 
 
 179-2 
 
 4-i5-o 
 
 49 
 
 ig5 
 
 
 
 
 
 
 
 
 
 
 
 
 489 0-298 
 
 45-9 
 
 178-4 
 
 4 1 3-o 
 
 o 
 
 8 
 
 
 
 
 
 
 
 
 
 
 
 
 489 
 
 0-338 
 
 4'7 
 
 177-6 
 
 4-15-6 
 
 
 
 22 
 
 
 166-747 
 
 
 o-g56 
 
 286-3 
 
 
 
 
 
 756 
 
 
 489 
 
 o-33g 
 
 
 176-5 
 
 4- '4'6 
 
 9 
 
 106 
 
 
 
 489 
 
 0-660 
 
 2g2-3 
 
 I79-5 
 
 4-15-7 
 
 3i 
 
 187 
 
 
 
 4g3 
 
 0-370 5-5 
 
 168-7 
 
 + 22-6 
 
 6 
 
 i5 
 
 
 
 490 
 
 o'36o 
 
 1 86-6 
 
 142-8 
 
 -'9'4 
 
 18 
 
 53 
 
 
 
 49 
 
 o -."),").") iSo'i 
 
 170-5 
 
 -29-1 
 
 5 
 
 29 
 
 
 
 49 5 
 
 o-36 1 
 
 167-0 
 
 1 35-4 
 
 19-0 
 
 18 
 
 53 
 
 
 
 49 
 
 0-571 1O2'2 
 
 I73-3 
 
 -29-2 
 
 
 
 26 
 
 
 
 494 
 
 o"5o5 
 
 143-0 
 
 121-2 
 
 -22-3 
 
 23 
 
 73 
 
 
 
 490 
 
 0-62I H4-2 
 
 1 66-5 
 
 -29-2 
 
 
 
 3i 
 
 
 
 496 
 
 0-871 
 
 122-4 
 
 84-9 
 
 26-9 
 
 '7 
 
 i5i 
 
 
 
 
 491 
 
 o-5 1 5 1 1 o-3 
 
 161*8 
 
 - 9'3 
 
 9 
 
 72 
 
 
 
 
 0-898 
 
 125-7 
 
 
 
 
 
 06O 
 
 
 ~y 
 
 491 
 
 107-4 
 
 i56-o 
 
 
 8 
 
 40 
 
 
 June 1 7* 
 
 
 
 
 
 * 
 
 ('07) 
 
 (5 1 7) 
 
 (56o) 
 
 
 494 
 
 o-g52 ! u3'8 
 
 121-0 
 
 22'2 
 
 40 
 
 '72 
 
 426* 
 
 
 
 
 
 
 
 
 
 
 
 
 0-706 138-3 
 
 
 
 
 
 667 
 
 
 
 
 
 
 
 
 
 
 
 
 0-880 i iro 
 
 
 
 
 
 149 
 
 167-691 
 
 
 0-916 
 
 291-7 
 
 
 
 
 
 783 
 
 June 1 3 
 
 
 
 
 
 
 (126) 
 
 (724) 
 
 (1606) 
 
 
 
 0-808 23 rg 
 
 
 
 
 
 49 
 
 
 
 
 
 
 
 
 
 
 
 489 
 
 0-802 
 
 288-7 
 
 .79-8 
 
 4- 1 5-g 
 
 33 
 
 1 32 
 
 276 c 
 
 i63-goi 
 
 
 0-844 
 
 289-0 
 
 
 
 
 
 140 
 
 
 49 5 
 
 0-442 
 
 2 1 5-5 
 
 143-5 
 
 i g-5 
 
 20 
 
 70 
 
 
 
 
 0-795 
 
 234-7 
 
 
 
 
 
 3 47 
 
 
 495 
 
 0-370 
 
 igS-3 
 
 .34-8 
 
 i8-g 
 
 O 
 
 16 
 
 
 
 492 
 
 0-090 
 
 296-7 
 
 211*2 
 
 4-16-3 
 
 o 
 
 '4 
 
 
 
 494 
 
 0-420 
 
 165-4 
 
 12 r3 
 
 -22-4 
 
 22 
 
 78 
 
 
 
 492 
 
 o - 56i 
 
 297'9 
 
 208-9 
 
 -16-2 
 
 5 
 
 9 
 
 
 
 49 6 
 
 0-770 
 
 127-7 
 
 84-9 
 
 -26-8 
 
 28 
 
 129 
 
 
 
 489 
 
 0-245 
 
 355-6 
 
 179-1 
 
 4-i5-3 
 
 33 
 
 '97 
 
 
 
 496 
 
 0-807 
 
 127-8 
 
 8r5 
 
 -28-4 
 
 6 
 
 3i 
 
 r * 
 
 - 
 
 489 
 490 
 
 0-240 
 o - 5o6 
 
 5-o 
 175-2 
 
 176-7 
 1-5-2 
 
 4-i5-o 
 -29-0 
 
 6 
 
 o 
 
 73 
 
 25 
 
 
 June i 8* 
 
 
 0-843 
 
 1 33-1 
 
 
 
 (I0 9 ) 
 
 (456) 
 
 567 
 (2,16) 
 
 * Indian photo. 1 In- Areas of Spots and Faculse are expressed in Millionths of the Sun's visible Hemisphere. 
 
 a 64893. 
 
REDUCTION OF SOLAR PHOTOGRAPHS THROUGHOUT 1878-1881. 
 
 MEASURKS of POSITIONS and AREAS of SPOTS and FACUL.E upon the SUN'S DISK on PHOTOGRAPHS taken in the YEAK 1831 continued. 
 
 
 
 Dis- 
 
 
 HELIOGRAPHIC 
 
 Sl'OTS. 
 
 FACUL^E. 
 
 
 
 Dis- 
 
 
 HELIOOKAPHIC 
 
 SPOTS. 
 
 FACCLJE. 
 
 Mean 1 
 Solar 
 Time. 
 
 No. of 
 3roup, 
 and 
 Letter 
 for 
 Spot. 
 
 tance 
 from 
 Centre 
 in 
 terms 
 of 
 Sun's 
 Radius. 
 
 ,'osition 
 Angle 
 from 
 Sun's 
 Axis. 
 
 
 
 
 Mean 
 Solar 
 Time. 
 
 No. of 
 Group, 
 and 
 Letter 
 for 
 Spot. 
 
 tance 
 from 
 Centre 
 in 
 terms 
 of 
 Sun's 
 Radius. 
 
 Position 
 Angle 
 from 
 Sun's 
 Axis. 
 
 
 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBRA 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 WHOLE 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMHUA 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 WHOLE 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 1881. 
 
 
 
 o 
 
 o 
 
 o 
 
 
 
 
 1881. 
 
 
 
 o 
 
 o 
 
 
 
 
 
 
 i6o d 'Q04 
 
 
 0-894 
 
 266-6 
 
 
 
 
 
 344 
 
 I74 d 7I2 
 
 5oi 
 
 0-902 
 
 6r3 
 
 332-7 
 
 4-26-8 
 
 42 
 
 1 33 
 
 
 y j T 
 
 
 0-872 
 
 233-0 
 
 
 
 
 
 7^9 
 
 
 5oi 
 
 o-gi3 
 
 62-9 
 
 33o-8 
 
 + 26-6 
 
 12 
 
 73 
 
 1277 c 
 
 
 
 0-864 
 
 288-2 
 
 
 
 
 
 363 
 
 
 502 
 
 0-964 
 
 60-7 
 
 321-5 
 
 4-28-8 
 
 
 
 86 
 
 
 
 4g5 
 
 0-766 
 
 242-3 
 
 144-3 
 
 ig-5 
 
 
 
 27 
 
 
 
 
 '96g 
 
 12~ l '6 
 
 
 
 
 
 8gi 
 
 
 4Q4 
 
 0-646 
 
 220-6 
 
 I2I'O 
 
 22-7 
 
 9 
 
 28 
 
 
 
 
 0-988 
 
 76-9 
 
 
 
 
 
 624 
 
 
 ~y i 
 496 
 
 0-624 
 
 164-8 
 
 84-1 
 
 26-4 
 
 18 
 
 83 
 
 
 June 26* 
 
 
 
 
 
 
 (.64) 
 
 (725) 
 
 (3252) 
 
 
 497 
 
 0-626 
 
 6l'4 
 
 70-0 
 
 4-I6-2 
 
 
 
 8 
 
 
 
 
 
 
 
 
 
 
 
 
 
 0-863 
 
 62-8 
 
 
 
 
 
 229 
 
 
 
 
 
 
 
 
 
 
 June 20 
 
 
 
 
 
 
 (27) 
 
 (146) 
 
 (1676) 
 
 176-780 
 
 
 o- 97 3 
 
 240-5 
 
 
 
 
 
 860 
 
 
 
 
 
 
 
 
 
 
 
 5o3 
 
 0-321 
 
 i58-8 
 
 0-7 
 
 -'47 
 
 3i 
 
 122 
 
 
 
 
 
 
 
 
 
 
 
 
 5o3 
 
 0-355 
 
 i5o-i 
 
 367-1 
 
 -15-2 
 
 4 
 
 35 
 
 
 170-982 
 
 
 0-976 
 o-g38 
 
 258-0 
 234-5 
 
 
 
 
 
 496 
 760 
 
 
 5o3 
 601 
 
 o-368 
 o - 65g 
 
 144-9 
 5i-5 
 
 355-0 
 332-6 
 
 14-8 
 + 26-3 
 
 20 
 
 29 
 
 98 
 
 143 
 
 
 
 
 0-926 
 
 283-3 
 
 
 
 
 
 493 
 
 
 5oi 
 
 0-674 
 
 64-7 
 
 33o-5 
 
 4-25-0 
 
 22 
 
 74 
 
 
 
 496 
 
 0-892 
 
 247'4 
 
 144-6 
 
 19-0 
 
 i3 
 
 '9 
 
 266 / 
 
 
 602 
 
 0-788 
 
 55'4 
 
 320'3 
 
 4-28-4 l5 
 
 64 
 
 
 
 494 
 
 0-684 
 
 234-0 
 
 120-8 
 
 22-0 
 
 2 
 
 12 
 
 
 
 604 
 
 0-766 
 
 76-3 
 
 3 1 g-3 
 
 + 12-8 26 
 
 126 
 
 
 
 t 
 
 49 
 
 0-476 
 
 '797 
 
 84-1 
 
 -26-3 
 
 i3 
 
 47 
 
 
 
 604 
 
 0-787 
 
 76-6 
 
 3i6-2 
 
 + 12-2 
 
 I I 
 
 67 
 
 
 June 21 
 
 
 
 
 
 
 (28) 
 
 (78) 
 
 ('994) 
 
 
 5o5 
 
 0-847 
 
 77-3 
 
 3io-i 
 
 4-12-2 
 
 6 
 
 78 
 
 353 c 
 
 
 
 
 
 
 
 
 
 
 
 5o5 
 
 0-868 
 
 74-0 
 
 3og - 2 
 
 4-I5-I 
 
 '9 
 
 1/6 
 
 
 
 
 
 
 
 
 
 
 
 
 
 0-862 
 
 136-8 
 
 
 
 
 
 325 
 
 171-938 
 
 
 0-942 
 0-862 
 
 287-3 
 244-0 
 
 
 
 
 
 146 
 1 65 
 
 June 27* 
 
 
 o-g83 
 
 73-5 
 
 
 
 (i 80) 
 
 (973) 
 
 1061 
 (2689) 
 
 
 496 
 
 o'5i3 
 
 200-7 
 
 83-2 
 
 -26-5 
 
 7 
 
 32 
 
 
 
 
 
 
 
 
 
 
 
 
 
 0-962 
 
 io6-3 
 
 
 
 
 
 56 9 
 
 
 
 
 
 
 
 
 
 
 June 22 
 
 
 
 
 
 
 (7) 
 
 (32) 
 
 (880) 
 
 178-027 
 
 
 0-802 
 
 2997 
 
 
 
 
 
 23o 
 
 
 
 
 
 
 
 
 
 
 
 5o3 
 
 o-33 1 
 
 207-3 
 
 35g-g 
 
 14-3 
 
 64 
 
 260 
 
 
 
 
 
 
 
 
 
 
 
 
 5o3 
 
 o'3og 
 
 192-4 
 
 354-9 
 
 -147 
 
 48 
 
 261 
 
 
 172-961 
 
 
 0-896 
 
 241-3 
 
 
 
 
 
 241 
 
 
 601 
 
 o'5o3 
 
 36-2 
 
 33i-7 
 
 4-26-5 
 
 3i 
 
 144 
 
 
 
 496 
 
 '99 3 
 
 260-8 
 
 1 3g-8 
 
 -i 8-8 
 
 
 
 21 
 
 48 isf 
 
 
 5oi 
 
 o-5o3 
 
 42-0 
 
 329-4 
 
 4-24-6 
 
 10 
 
 65 
 
 
 
 49 8 
 
 0-761 
 
 288-1 
 
 106-4 
 
 4-16-1 
 
 o 
 
 6 
 
 
 
 602 
 
 o-63g 
 
 47-2 
 
 3 19-0 
 
 4-28-0 
 
 ii 
 
 39 
 
 67 1 / 
 
 
 49 8 
 
 0-716 
 
 287-6 
 
 102-5 
 
 + 14-1 
 
 7 
 
 18 
 
 
 
 604 
 
 0-538 
 
 70-6 
 
 3ig-8 
 
 + 12-7 
 
 34 
 
 7i 
 
 
 
 496 
 
 0-6 10 
 
 218-3 
 
 83-o 
 
 -26-6 
 
 i3 
 
 22 
 
 
 
 604 
 
 0-674 
 
 72'9 
 
 317-0 
 
 + I2'O 
 
 5 
 
 34 
 
 170 c 
 
 
 499 
 
 0-466 
 
 '447 
 
 42*0 
 
 19-6 
 
 o 
 
 6 
 
 
 
 606 
 
 0-684 
 
 7 3- 7 
 
 3o8-8 
 
 4-I3-I 
 
 9 
 
 70 
 
 353 c 
 
 
 600 
 
 0-918 
 
 100-4 
 
 352-3 
 
 - 8-6 
 
 4 
 
 33 
 
 
 
 5o5 
 
 0-674 
 
 70-6 
 
 3io'i 
 
 4-lS-o 
 
 10 
 
 80 
 
 
 
 5oo 
 
 0-980 
 
 io3-5 
 
 340-7 
 
 -12-8 
 
 4 
 
 17 
 
 1372 c 
 
 
 5o5 
 
 0727 
 
 70-2 
 
 306-7 
 
 4- l6'2 
 
 i3 
 
 1 1 1 
 
 
 
 5oi 
 
 0-998 
 
 64-3 
 
 33r3 
 
 + 26-8 
 
 108 
 
 5i5 
 
 182^9 
 
 
 606 
 
 0-926 
 
 68-2 
 
 284-0 
 
 4-21-2 
 
 o 
 
 17 
 
 
 
 
 0-916 
 
 68-7 
 
 
 
 
 
 64 
 
 
 606 
 
 0-928 
 
 66-2 
 
 283-g 
 
 4-23-1 
 
 3o 
 
 121 
 
 
 June 23 
 
 
 
 
 
 
 (i36) 
 
 (638) 
 
 (23 4 0) 
 
 
 606 
 
 0-968 
 
 66-2 
 
 278-3 
 
 4-24-6 
 
 o 
 
 43 
 
 1277 c 
 
 
 
 
 
 
 
 
 
 
 
 
 0-747 
 
 146-7 
 
 
 
 
 
 394 
 
 
 
 
 
 
 
 
 
 
 June 28 
 
 
 
 
 
 
 (266) 
 
 (I 3 9 6) 
 
 (2995) 
 
 173-976 
 
 
 0-967 
 
 232-5 
 
 
 
 
 
 267 
 
 
 
 
 
 
 
 
 
 
 
 49 8 
 
 0-890 
 
 286-3 
 
 106-9 
 
 + I5-6 
 
 16 
 
 60 
 
 
 178-916 
 
 
 0-882 
 
 2 9 7'5 
 
 
 
 
 
 246 
 
 
 498 
 
 0-867 
 
 287-2 
 
 io3-g 
 
 4-16-1 
 
 94 
 
 i5 4 
 
 
 
 5o3 
 
 0-466 
 
 229-1 
 
 0-5 
 
 ->4'9 
 
 69 
 
 270 
 
 
 
 498 
 
 0-855 
 
 284-8 
 
 JQ2-8 
 
 + I3-9 
 
 16 
 
 98 
 
 3g8 c 
 
 
 5o3 
 
 0-404 
 
 221-5 
 
 355-2 
 
 14-8 
 
 65 
 
 2l8 
 
 
 
 496 
 
 0-734 
 
 229-0 
 
 82-9 
 
 26-9 
 
 9 
 
 28 
 
 462 s 
 
 
 5o3 
 
 o-35o 
 
 226-5 
 
 364-2 
 
 i n 
 
 7 
 
 3o 
 
 
 
 5oo 
 
 0-789 
 
 io3*o 
 
 353-8 
 
 - 8-7 
 
 
 
 20 
 
 
 
 5oi 
 
 0-426 
 
 I 5'9 
 
 332-2 
 
 4-26-9 
 
 32 
 
 1 35 
 
 
 
 5oo 
 
 0-816 
 
 196-2 
 
 35 1-7 
 
 -117 
 
 o 
 
 25 
 
 871 n 
 
 
 5oi 
 
 0-417 
 
 24'I 
 
 328-4 
 
 + 25-1 
 
 10 
 
 5o 
 
 
 
 5oi 
 
 0-962 
 
 63-5 
 
 33 1 -5 
 
 + 26-1 
 
 73 
 
 38 1 
 
 
 
 604 
 
 0-363 
 
 62-1 
 
 320-2 
 
 4-12-5 
 
 29 
 
 118 
 
 
 
 502 
 
 '994 
 
 61-6 
 
 320-8 
 
 + 28-6 
 
 o 
 
 I 10 
 
 690 w 
 
 
 602 
 
 0-608 
 
 34-I 
 
 320-6 
 
 4-27-6 
 
 8 
 
 23 
 
 
 June 24 
 
 
 
 
 
 
 (207) 
 
 (8/6) 
 
 (2678) 
 
 
 606 
 
 o'5o6 
 
 65-8 
 
 310-9 
 
 + 14-6 
 
 17 
 
 72 
 
 
 
 
 
 
 
 
 
 
 
 
 5o5 
 
 0-535 
 
 69'9 
 
 3o8-3 
 
 4-I3-I 
 
 i3 
 
 49 
 
 
 
 
 
 
 
 
 
 
 
 
 5o5 
 
 0-679 
 
 66-7 
 
 3o6-i 
 
 + 16-2 
 
 21 
 
 1 66 
 
 
 174712 
 
 498 
 
 0-964 
 
 285-3 
 
 107-2 
 
 + i5-3 
 
 27 
 
 203 
 
 
 
 5o6 
 
 o-836 
 
 66-4 
 
 284-2 
 
 + 2I-2 
 
 O 
 
 9 
 
 
 
 498 
 
 0-929 
 
 286-9 
 
 102-8 
 
 4-16-7 
 
 o 
 
 44 
 
 
 
 5o6 
 
 0-846 
 
 64-1 
 
 283-6 
 
 + 23-3 
 
 38 
 
 142 
 
 
 
 498 
 
 o-g3o 
 
 283-3 
 
 io3-i 
 
 + I3-3 
 
 46 
 
 121 
 
 7 3 9 c 
 
 
 5o6 
 
 0-861 
 
 68-1 
 
 282-2 
 
 4-20-1 
 
 o 
 
 10 
 
 
 
 496 
 
 0-816 
 
 233-5 
 
 82-1 
 
 -27-1 
 
 o 
 
 40 
 
 783 c 
 
 
 606 
 
 0-896 
 
 63-3 
 
 277-6 
 
 4-26-1 
 
 o 
 
 67 
 
 i oog c 
 
 
 5oo 
 
 0-672 
 
 io5-6 
 
 364-2 
 
 - 8-6 
 
 2 
 
 18 
 
 
 June 29 
 
 
 
 
 
 
 (3og) 
 
 (i 35 9 ) 
 
 (i3o 4 ) 
 
 * Indian photo. The Areas of Spots and Faculas are expressed in Millionthe of the Sun's visible Hemisphere. 
 
REDUCTION OF SOLAR PHOTOGKAPHS THROUGHOUT 1878-1881. 
 
 59 
 
 MKASI-RES of I'osrndxs and AKKAS of SPOTS and FAC'LM..K upon the SUN'S DISK on PIIOTOORAI-IIS taki'ii in the YEAR 1881 continual. 
 
 
 
 Dis- 
 
 
 HKI.HM..I; Armc 
 
 S I'OTB. 
 
 FACULJB. 
 
 
 
 Dis- 
 
 
 111 I.IIH.I: n-lii.' 
 
 SPOTS. 
 
 FACUI..K. 
 
 Mean 
 Solar 
 
 Time. 
 
 No. of 
 Ghroap, 
 
 un'l 
 Lcttt-r 
 for 
 
 tance 
 
 from 
 Centra 
 
 in 
 terms 
 of 
 
 Hailius. 
 
 Position 
 
 Aiifrlf 
 
 t'nim 
 Sim'- 
 Axis. 
 
 
 
 
 Mean 
 Solar 
 Time. 
 
 No. of 
 Group, 
 and 
 Letter 
 for 
 Spot. 
 
 tance 
 from 
 Centre 
 in 
 terms 
 of 
 Sun's 
 Kadi us. 
 
 Position 
 Angle 
 from 
 Sun's 
 Axis. 
 
 
 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBRA 
 
 tor each 
 Spnt 
 (and for 
 l)av). 
 
 Area of 
 \V1IOLK 
 for each 
 Spot 
 (and for 
 Day). 
 
 .\rr;l for 
 each 
 ( i roup 
 (and for 
 Day). 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBRA 
 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 \V1IOI.K 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 1881. 
 
 
 
 o 
 
 o 
 
 o 
 
 
 
 
 1881. 
 
 
 
 o 
 
 o 
 
 o 
 
 
 
 
 I7 9 d - 9 8i 
 
 
 0-961 
 
 2 9 5-5 
 
 
 
 
 
 162 
 
 l82 d '6l5 
 
 5o5 
 
 0'4l5 
 
 3oo'l 
 
 3l2'0 
 
 -r-iS-o 
 
 18 
 
 55 
 
 
 
 5o3 
 
 0-626 
 
 242-2 
 
 35 9 -9 
 
 -14-4 
 
 45 
 
 238 
 
 
 
 5o6 
 
 0-374 
 
 18-8 
 
 282-8 
 
 + 23-9 
 
 2O 
 
 98 
 
 
 
 5o3 
 
 0-568 
 
 238-6 
 
 355-1 
 
 14-5 
 
 4' 
 
 206 
 
 
 
 5o7 
 
 0-8 44 
 
 64-9 
 
 23 4 -5 
 
 + 22-8 
 
 37 
 
 123 
 
 447 c 
 
 
 5oi 
 
 0-423 
 
 3 4 6-8 
 
 33i-3 
 
 + 27-2 
 
 25 
 
 1 2O 
 
 
 
 
 0-970 
 
 120-2 
 
 
 
 
 
 668 
 
 
 504 
 
 0-187 
 
 3o-3 
 
 3iq-6 
 
 + 12-3 
 
 10 
 
 33 
 
 
 
 
 0-972 
 
 71-9 
 
 
 
 
 
 igo3 
 
 
 502 
 
 0-445 
 
 13-4 
 
 3 18-4 
 
 +28-6 
 
 o 
 
 '4 
 
 
 July 3* 
 
 
 
 
 
 
 (209) 
 
 (899) 
 
 (3g8 4 ) 
 
 
 5o5 
 
 o-3 16 
 
 49-3 
 
 310*9 
 
 + 14-8 
 
 i3 
 
 5 4 
 
 
 
 
 
 
 
 
 
 
 
 
 5o5 
 
 o-3oi 
 
 56-i 
 
 310-4 
 
 + 12-6 
 
 4 
 
 27 
 
 
 
 
 
 
 
 
 
 
 
 
 5o5 
 
 0-400 
 
 53-g 
 
 3o5'5 
 
 + 16-4 
 
 24 
 
 ii3 
 
 
 183-944 
 
 
 0-974 
 
 255-3' 
 
 
 
 
 
 842 
 
 
 006 
 
 0-657 
 
 64-8 
 
 286-5 
 
 + 18-6 
 
 o 
 
 12 
 
 
 
 
 0-841 
 
 222-5 
 
 
 
 
 
 234 
 
 
 5o6 
 
 0*691 
 
 6i-5 
 
 284-6 
 
 + 21-5 
 
 2 
 
 8 
 
 
 
 5oi 
 
 0-869 
 
 3oo - 5 
 
 330-4 
 
 + 27-9 
 
 3i 
 
 80 
 
 
 
 5o6 
 
 0-71 5 
 
 5 9 -3 
 
 283-2 
 
 + 23-6 
 
 21 
 
 95 
 
 
 
 5oi 
 
 o-85g 
 
 297*9 
 
 339-7 
 
 + 25-6 
 
 3 
 
 i5 
 
 1076 / 
 
 
 5o6 
 
 0733 
 
 60-8 
 
 28r3 
 
 + 23-1 
 
 
 
 5 
 
 ioo3c 
 
 
 504 
 
 0-726 
 
 285-1 
 
 3 18-5 
 
 + 13-3 
 
 o 
 
 8 
 
 23 1 
 
 
 
 0-812 
 
 122-5 
 
 
 
 
 
 3 94 
 
 
 5o5 
 
 0*646 
 
 289-6 
 
 3u-6 
 
 + 15-2 
 
 10 
 
 '9 
 
 
 June 3o 
 
 
 
 
 
 
 (i 85) 
 
 ( 9 25) 
 
 (iSSg) 
 
 
 5o6 
 
 0-364 
 
 333-2 
 
 282-8 
 
 + 22-3 
 
 
 
 "9 
 
 
 
 
 
 
 
 
 
 
 
 
 5o6 
 
 0-383 
 
 338-1 
 
 281-6 
 
 + 24-1 
 
 i5 
 
 61 
 
 
 
 
 
 
 
 
 
 
 
 
 5o6 
 
 0-411 
 
 352-8 
 
 276-0 
 
 H-27'4 
 
 o 
 
 2 
 
 
 181-022 
 
 5o3 
 
 0-780 
 
 248-4 
 
 359-7 
 
 14-6 
 
 78 
 
 289 
 
 
 
 607 
 
 0-690 
 
 6o-3 
 
 232-4 
 
 + 22-6 
 
 4 
 
 80 
 
 
 
 5o3 
 
 0701 
 
 245-4 
 
 356-4 
 
 16-0 
 
 i3 
 
 39 
 
 
 
 5o8 
 
 0-923 
 
 65-3 
 
 206-2 
 
 + 24-3 
 
 47 
 
 95 
 
 
 
 5o3 
 
 0-733 
 
 248-8 
 
 355-7 
 
 -i3-i 
 
 >4 
 
 77 
 
 
 
 5og 
 
 0-943 
 
 69-3 
 
 202-4 
 
 + 20-7 
 
 o 
 
 27 
 
 929 S P 
 
 
 5o3 
 
 0-728 
 
 246-7 
 
 354-8 
 
 -14-4 
 
 23 
 
 81 
 
 
 
 5io 
 
 0-966 
 
 ni'5 
 
 200"2 
 
 "97 
 
 
 
 8 
 
 n6/ 
 
 
 5o3 
 
 0706 
 
 247-3 
 
 353-2 
 
 13-4 
 
 9 
 
 23 
 
 779 
 
 
 5i5 
 
 0-960 
 
 74*3 
 
 198-8 
 
 + 16-0 
 
 9 
 
 47 
 
 
 
 5oi 
 
 o-5i5 
 
 323-8 
 
 33r3 
 
 + 27*4 
 
 32 
 
 H7 
 
 
 
 $11 
 
 o-g83 
 
 73-7 
 
 I92'9 
 
 + 167 
 
 o 
 
 25 
 
 640 c 
 
 
 5oi 
 
 0-463 
 
 326-0 
 
 327-9 
 
 + 25-5 
 
 i 
 
 37 
 
 
 
 
 0-866 
 
 125-7 
 
 
 
 
 
 IOI 
 
 
 502 
 
 0-421 
 
 3 4 5'8 
 
 3i8-o 
 
 + 27-1 
 
 8 
 
 18 
 
 
 
 
 0-978 
 
 117-8 
 
 
 
 
 
 81 
 
 
 504 
 
 0-207 
 
 321-6 
 
 3i8'g 
 
 + 12*4 
 
 6 
 
 27 
 
 
 July 4 
 
 
 
 
 
 
 (.29) 
 
 (486) 
 
 (4280) 
 
 
 5o5 
 
 0'205 
 
 ri 
 
 3iri 
 
 + H'9 
 
 ll 
 
 7 5 
 
 
 
 
 
 
 
 
 
 
 
 
 5o5 
 
 0-247 
 
 20-6 
 
 3o6-2 
 
 + 16-4 
 
 5 
 
 37 
 
 
 
 
 
 
 
 
 
 
 
 
 5o6 
 
 o-53 1 
 
 5i 7 
 
 284-8 
 
 + 22-0 
 
 3 
 
 8 
 
 
 1 84-960 
 
 
 0-912 
 
 22g-5 
 
 
 
 
 
 250 
 
 
 5o6 
 
 o 069 
 
 5o- 7 
 
 282-7 
 
 + 23-8 
 
 24 
 
 86 
 
 
 
 
 o-865 
 
 283-3 
 
 
 
 
 
 354 
 
 
 5o 7 
 
 o*979 
 
 67-2 
 
 233-0 
 
 + 23-0 
 
 o 
 
 i35 
 
 3o5 n p 
 
 
 5oi 
 
 o'gSo 
 
 297-8 
 
 33o-3 
 
 4-27-5 
 
 "9 
 
 63 
 
 1 1 66 nf 
 
 
 
 0725 
 
 52- 7 
 
 
 
 
 
 209 
 
 
 5o6 
 
 0-496 
 
 3i5-6 
 
 281-5 
 
 + 24-0 
 
 i3 
 
 61 
 
 
 
 
 0-795 
 
 120-8 
 
 
 
 
 
 io3 
 
 
 512 
 
 o-3g3 
 
 143-7 
 
 245-4 
 
 -'4*9 
 
 
 
 4 
 
 
 
 
 o-g.3 1 
 
 io5'o 
 
 
 
 
 
 176 
 
 
 512 
 
 0-413 
 
 1 3g-3 
 
 243-1 
 
 14-7 
 
 
 
 i 
 
 
 July i 
 
 
 
 
 
 
 (23 4 ) 
 
 (1049) 
 
 (5 7 2) 
 
 
 512 
 
 0-427 
 
 136-6 
 
 2417 
 
 14-6 
 
 4 
 
 7 
 
 
 
 
 
 
 
 
 
 
 
 
 507 
 
 0-542 
 
 5o-g 
 
 232-2 
 
 + 23-1 
 
 10 
 
 32 
 
 
 
 
 
 
 
 
 
 
 
 
 5o8 
 
 0-806 
 
 63-7 
 
 207-7 
 
 4-23- 1 
 
 
 
 5 4 
 
 492 ' 
 
 181*919 
 
 5o3 
 
 0-891 
 
 2817 
 
 O'O 
 
 14-6 
 
 25 
 
 297 
 
 
 
 5og 
 
 0-849 
 
 68-0 
 
 202-3 
 
 + 2O-5 
 
 
 
 23 
 
 89 / 
 
 
 5o3 
 
 0-806 
 
 252-1 
 
 355-9 
 
 13-5 
 
 o 
 
 85 
 
 
 
 5io 
 
 0-884 
 
 114-2 
 
 200-7 
 
 -19-4 
 
 
 
 15 
 
 25o/ 
 
 
 5o3 
 
 0-846 
 
 25o - 4 
 
 354-5 
 
 -14-6 
 
 18 
 
 IOI 
 
 
 
 5i5 
 
 0-862 
 
 7 3-6 
 
 200-2 
 
 + i5- 9 
 
 21 
 
 124 
 
 2840 
 
 
 5o3' 
 
 o-83i 
 
 25r6 
 
 353-2 
 
 i 3-3 
 
 
 
 i5 
 
 1265 
 
 
 5u 
 
 0-918 
 
 7 3-2 
 
 192-8 
 
 + 16-9 
 
 25 
 
 82 
 
 5o 4 / 
 
 
 5oi 0-627 
 
 3i2-3 
 
 33o7 
 
 + 27-7 
 
 25 
 
 7 
 
 
 
 5i3 
 
 0-906 
 
 120-6 
 
 I99-5 
 
 -257 
 
 8 
 
 21 
 
 g2 c 
 
 
 5o2 0-482 
 
 323-3 
 
 3i 7 -8 
 
 + 25- 7 
 
 3 
 
 10 
 
 
 
 5i3 
 
 o-g2g 
 
 119-9 
 
 igS-8 
 
 26-0 
 
 
 
 12 
 
 
 
 604 0-363 
 
 297-6 
 
 3i8'4 
 
 + 12-7 
 
 o 
 
 38 
 
 
 July 5 
 
 
 
 
 
 
 ( oo) 
 
 (499) 
 
 (3 4 5i) 
 
 
 5o5 0-287 
 
 314-9 
 
 311-4 
 
 + 14-8 
 
 i5 
 
 87 
 
 
 
 
 
 
 
 
 
 
 
 
 5o5 o-25g 
 
 33o-8 
 
 3o6-8 
 
 + 16-2 
 
 3 
 
 33 
 
 
 
 
 
 
 
 
 
 
 
 
 5o6 
 
 0-449 
 
 37-3 
 
 282-1 
 
 + 23-g 
 
 7 
 
 72 
 
 
 185-949 
 
 
 0-918 
 
 285-5 
 
 
 
 
 
 1123 
 
 
 So; 
 
 0-921 
 
 66-9 
 
 233-0 
 
 + 22-5 
 
 22 
 
 134 
 
 338* 
 
 
 5o6 
 
 0-638 
 
 304-5 
 
 28r2 
 
 + 24-2 
 
 1 1 
 
 43 
 
 
 
 
 0-701 
 
 
 
 
 
 
 166 
 
 
 5o8 
 
 0-643 
 
 5 7 -i 
 
 210-2 
 
 + 23-5 
 
 o 
 
 i5 
 
 
 
 
 0-981 
 
 
 
 
 
 
 '497 
 
 
 5o8 0-657 
 
 58-5 
 
 208-8 
 
 + 23-0 
 
 
 
 4 
 
 
 July 2 
 
 
 
 
 
 
 (128) 
 
 (942) 
 
 (3266) 
 
 
 5 1 .") 0705 
 
 71-8 
 
 202'3 
 
 + i5-4 
 
 23 
 
 77 
 
 
 
 
 
 
 
 
 
 
 
 
 5i5 
 
 0-721 
 
 7o-g 
 
 201-1 
 
 + i6-3 
 
 26 
 
 9" 
 
 
 182-610 
 
 5o3 
 
 0-945 
 
 252'4 
 
 35 9 -2 
 
 -i 5-4 
 
 5o 
 
 215 
 
 
 
 5og 
 
 0-721 
 
 64-5 
 
 202-2 
 
 + 20-7 
 
 5 
 
 24 
 
 
 5o3 
 
 0-921 
 
 253-5 
 
 355-5 13-8 
 
 38 
 
 170 
 
 966 c 
 
 
 5ll 
 
 0-814 
 
 7 i-5 
 
 192-4 
 
 + 17*2 
 
 37 
 
 122 
 
 
 
 5o3 0-904 
 
 252-0 
 
 352-8 
 
 14-7 
 
 23 
 
 127 
 
 
 
 o-8g5 
 
 7 2-5 
 
 
 
 
 
 99 5 
 
 
 5oi 0-722 
 
 3o5'4 
 
 33r5 
 
 + 27*1 
 
 21 
 
 84 
 
 
 
 
 0-982 
 
 io3-3 
 
 
 
 
 
 8i3 
 
 
 604 
 
 0-494 
 
 191*6 
 
 3 18-4 
 
 + i3- 4 
 
 2 
 
 27 
 
 
 July 6 
 
 
 
 
 
 
 (102) 
 
 (3 7 6) 
 
 (2930 
 
 * Indian photo. The Areas of Spots and Faculoo are expressed in Millionths of the Sun's risible Hemisphere. 
 
 H 2 
 
60 
 
 REDUCTION OF SOLAR PHOTOGRAPHS THROUGHOUT 1878-1881. 
 
 MEASURKS of POSITIONS and AREAS of SPOTS and FA.CVLJE upon the SUN'S DISK on PHOTOGRAPHS taken in the YKAR 1881 continued. 
 
 
 
 Dis- 
 
 
 HKLIOGRAPHIC 
 
 SPOTS. 
 
 FACUI.JE. 
 
 
 
 Dis- 
 
 
 IlKI.IOCKAI'HIC 
 
 SPOTS. 
 
 FACUTUS. 
 
 Mean 
 Solar 
 Time. 
 
 No. of 
 Group, 
 and 
 Letter 
 for 
 Spot. 
 
 tance 
 from 
 Centre 
 in 
 terms 
 of 
 Sun's 
 Radius. 
 
 Position 
 Angle 
 from 
 Sun's 
 Axis. 
 
 
 
 
 Mean 
 Solar 
 Time. 
 
 No. of 
 Group, 
 and 
 Letter 
 for 
 Spot. 
 
 tance 
 from 
 Centre 
 in 
 terms 
 of 
 Sun's 
 Radius. 
 
 Position 
 Angle 
 from 
 Sun's 
 Axis. 
 
 
 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBRA 
 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 WHOLE 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 Long! - 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBRA 
 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 WHOLE 
 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 1881. 
 
 
 
 o 
 
 
 
 o 
 
 
 
 
 1881. 
 
 
 
 o 
 
 o 
 
 o 
 
 
 
 
 I86 d -6o8 
 
 5o6 
 
 o-;33 
 
 3oo-i 
 
 28r3 
 
 + 24-2 
 
 
 
 29 
 
 576*^ 
 
 ig2 d -g85 
 
 016 
 
 0-444 
 
 106-7 
 
 I42-3 
 
 -19*7 
 
 7< 
 
 407 
 
 
 
 5o8 
 
 0'45l 
 
 56-o 
 
 214-3 
 
 18-0 
 
 o 
 
 11 
 
 
 
 520 
 
 O-532 
 
 147-3 
 
 i35'o 
 
 -22*3 
 
 
 
 i3 
 
 
 
 5o8 
 
 O'5g6 
 
 5o-5 
 
 206-9 
 
 25-4 
 
 o 
 
 21 
 
 
 
 5i8 
 
 o'6io 
 
 120-3 
 
 120-2 
 
 -14-2 
 
 7 
 
 32 
 
 
 
 008 
 
 0'552 
 
 5o-8 
 
 209-7 
 
 237 
 
 o 
 
 H 
 
 
 
 5'7 
 
 o-638 
 
 72-9 
 
 114-2 
 
 + 14-2 
 
 "9 
 
 77 
 
 38o/ 
 
 
 514 
 
 0'20I 
 
 0-4 
 
 237-3 
 
 + l5'2 
 
 i5 
 
 39 
 
 
 
 
 0-749 
 
 1 56 7 
 
 
 
 
 
 224 
 
 
 5i5 
 
 0-592 
 
 69-3 
 
 202-5 
 
 -f-i5-i 
 
 33 
 
 l6o 
 
 
 July 1 3 
 
 
 
 
 
 
 ('44) 
 
 (85.) 
 
 (2191) 
 
 
 009 
 
 0-627 
 
 6ro 
 
 2OI-7 
 
 + 20-6 
 
 6 
 
 28 
 
 
 
 
 
 
 
 
 
 
 
 
 5i5a 
 
 0-647 
 
 67-4 
 
 l9-g 
 
 + 17-2 
 
 o 
 
 46 
 
 
 193-978 
 
 
 0-896 
 
 240-5 
 
 
 
 
 
 4 i5 
 
 
 5n 
 
 0-726 
 
 70-1 
 
 I92-1 
 
 + 16-8 
 
 22 
 
 i3i 
 
 
 
 5i5 
 
 O'qi3 
 
 283-8 
 
 2o5'g 
 
 + 14-4 
 
 7' 
 
 256 
 
 
 
 
 74 3 
 
 70 o 
 
 
 
 
 
 684 
 
 
 5i5 
 
 0-885 
 
 285-3 
 
 202-1 
 
 -H5-6 o 
 
 29 
 
 97'/ 
 
 
 
 0-939 
 
 ii 4* i 
 
 
 
 
 
 1322 
 
 
 5i6 
 
 0-417 
 
 >9'7 
 
 140-1 
 
 19-6 o 
 
 5 
 
 
 July 7 t 
 
 
 
 
 
 
 (76) 
 
 (479) 
 
 (2582) 
 
 
 5i6 
 
 0-414 
 
 i85-i 
 
 142-2 
 
 19-8 52 
 
 418 
 
 
 
 
 
 
 
 
 
 
 
 
 520 
 
 o- 4 5g 
 
 169-2 
 
 134-6 
 
 22'2 
 
 i 
 
 '7 
 
 
 188-926 
 
 
 0-954 
 
 290-8 
 
 
 
 
 
 270 
 
 
 5i8 
 
 0-442 
 
 134-7 
 
 121*1 
 
 -i3-8 
 
 4 
 
 i5 
 
 
 
 
 0-888 
 
 245-0 
 
 
 
 
 
 275 
 
 
 5i 7 
 
 0-455 
 
 66- 9 
 
 114-4 
 
 + 14-3 
 
 24 
 
 83 
 
 
 
 
 0-885 
 
 3o2-3 
 
 
 
 
 
 299 
 
 
 
 0-914 
 
 6ro 
 
 
 
 
 
 3io 
 
 
 614 
 
 0-536 
 
 293-1 
 
 2^7-4 
 
 -H5-5 
 
 II 
 
 40 
 
 
 
 
 o-gi5 
 
 123-3 
 
 
 
 
 
 201 
 
 
 5i 4 
 
 0'502 
 
 296-7 
 
 234-5 
 
 + i6-5 
 
 3 
 
 5 
 
 
 July 14 
 
 
 
 
 
 
 (52) 
 
 (823) 
 
 (2897) 
 
 
 5o8 
 
 0-335 
 
 35i-5 
 
 209-8 
 
 + 23-2 
 
 6 
 
 27 
 
 
 
 
 
 
 
 1 
 
 
 
 
 5o8 
 
 o-38 1 
 
 3-6 
 
 205'2 
 
 + 26-2 
 
 o 
 
 4 
 
 
 194-900 
 
 
 o'gSi 
 
 244-8 
 
 
 
 
 480 
 
 
 5og 
 
 o-3 10 
 
 i6'9 
 
 2O1-2 
 
 + 2I-I 
 
 o 
 
 8 
 
 
 
 5i5 
 
 o- 97 8 
 
 283-4 
 
 206' 1 
 
 + 14-0 37 
 
 264 
 
 780 nf 
 
 
 5i5 
 
 0-176 
 
 ,4-6 
 
 204-1 
 
 + i3- 7 
 
 20 
 
 1 65 
 
 
 
 5i6 
 
 0-473 
 
 210-2 
 
 I42-3 
 
 19*6 73 
 
 425 
 
 
 
 5i5 
 
 0'203 
 
 15-3 
 
 203-6 
 
 4-15-2 
 
 O 
 
 4 
 
 
 
 520 
 
 0-468 
 
 Iq3'7 
 
 I34-6 
 
 22*4 
 
 63 
 
 
 
 5ii 
 
 0-325 
 
 46-8 
 
 I92-5 
 
 + 16-7 
 
 12 
 
 75 
 
 
 
 5i8 
 
 0-337 
 
 l6o-3 
 
 I21'0 
 
 -i3*g; 6 
 
 23 
 
 
 
 5i6 
 
 0-916 
 
 114-2 
 
 144-0 
 
 20-2 
 
 I? 
 
 122 
 
 
 
 5i 7 
 
 0-276 
 
 5i-5 
 
 II4-9 
 
 + 14-3 
 
 16 
 
 33 
 
 
 
 5i6 
 
 0-927 
 
 I I 2'3 
 
 H''9 
 
 i8-g 
 
 62 
 
 299 
 
 
 
 
 0-789 
 
 57-5 
 
 
 
 
 
 23l 
 
 
 5i6 
 
 o-g36 
 
 u5-3 
 
 141-1 
 
 22'0 
 
 O 
 
 1 I 
 
 634/ 
 
 
 
 0-884 
 
 128-0 
 
 
 
 
 
 Sog 
 
 
 
 0-835 
 
 i33'7 
 
 
 
 
 
 187 
 
 
 
 0-922 
 
 1 10-7 
 
 
 
 
 
 198 
 
 July 9 
 
 
 
 
 
 
 (i3i) 
 
 (760) 
 
 (i665) 
 
 July i5 
 
 
 
 
 
 
 (13*) 
 
 (808) 
 
 (2198) 
 
 igro27 
 
 
 0-928 
 
 253-5 
 
 
 
 
 
 9 1 
 
 igS-SgS 
 
 
 0-980 
 
 25o-3 
 
 
 
 
 
 201 
 
 
 
 0-771 
 
 23o-8 
 
 
 
 
 
 294 
 
 
 
 0-918 
 
 286-0 
 
 
 
 
 
 653 
 
 
 514 
 
 0-872 
 
 28 4 -g 
 
 239-4 
 
 + i5-o 
 
 4 
 
 18 
 
 386/ 
 
 
 
 0-872 
 
 23z-3 
 
 
 
 
 
 2 4 5 
 
 
 5i5 
 
 0-464 
 
 2g2'6 
 
 2o5'o 
 
 + 14-0 
 
 5 7 
 
 269 
 
 
 
 
 o-85o 
 
 200-8 
 
 
 
 
 
 533 
 
 
 5i5 
 
 0-411 
 
 301-7 
 
 2OO"2 
 
 + 16-3 
 
 12 
 
 127 
 
 
 
 5i6 
 
 0-618 
 
 225'6 
 
 142-7 
 
 21*5 
 
 18 
 
 55 
 
 
 
 5ii 
 
 0-365 
 
 307-3 
 
 I96-5 
 
 + 167 
 
 9 
 
 58 
 
 
 
 5i6 
 
 o-og3 
 
 228-5 
 
 142-4 
 
 i8-g 
 
 65 
 
 337 
 
 
 
 5i6 
 
 0-6 8 1 
 
 127-0 
 
 I43-5 
 
 20-7 
 
 16 
 
 106 
 
 
 
 5i8 
 
 0-338 
 
 igg-3 
 
 121*1 
 
 i 3*g 
 
 
 
 10 
 
 
 
 5i6 
 
 o-68g 
 
 124-2 
 
 H I- 9 
 
 -9'4 
 
 68 
 
 3o3 
 
 i8 4 i/ 
 
 
 5i8 
 
 0-329 
 
 ig3'6 
 
 I'9'I 
 
 i 3*9 
 
 o 
 
 4 
 
 
 
 5-7 
 
 o'gog 
 
 76-7 
 
 n3-5 
 
 + i3-g 
 
 25 
 
 125 
 
 452 / 
 
 
 617 
 
 0-174 
 
 357-0 
 
 1 1 5- 1 
 
 + 14-6 
 
 4 
 
 '4 
 
 
 July 1 1 
 
 
 
 
 
 
 (9i) 
 
 (1006) 
 
 (3064) 
 
 
 
 0-834 
 
 134-5 
 
 
 
 
 
 268 
 
 
 
 
 
 
 
 
 
 
 July 1 6 
 
 
 
 
 
 
 (87) 
 
 (420) 
 
 (igoo) 
 
 191-990 
 
 
 0-849 
 
 2g2'2 
 
 
 
 
 
 666 
 
 
 
 
 
 
 
 
 
 
 
 5i5 
 
 0*645 
 
 287-1 
 
 zo5-5 
 
 + 14-2 
 
 62 
 
 281 
 
 
 196-641 
 
 5i6 
 
 0-719 
 
 233'4 
 
 142-9 
 
 -21-7 
 
 12 
 
 33 
 
 
 
 5i5 
 
 o-5g3 
 
 290-9 
 
 201-2 
 
 + 10-7 
 
 1 1 
 
 46 
 
 
 
 5i6 
 
 0-702 
 
 238-0 
 
 143-2 
 
 18-1 
 
 7 
 
 3o 
 
 
 
 5i i 
 
 o'53g 
 
 2g5 - o 
 
 196-7 
 
 + 16-8 
 
 6 
 
 33 
 
 
 
 5i6 
 
 0-691 
 
 235-g 
 
 141-7 
 
 19*0 
 
 32 
 
 121 
 
 
 
 5i6 
 
 0-554 
 
 1 36-5 
 
 142-4 
 
 -19-7 
 
 74 3g3 
 
 
 
 5-7 
 
 0-260 
 
 3i2-g 
 
 1 1 5-9 
 
 + 14-8 
 
 2 
 
 9 
 
 
 
 5i8 
 
 o- 77 3 
 
 i i3-i 
 
 I ig'O 
 
 -147 
 
 o 41 
 
 
 July 17* 
 
 
 
 
 
 
 (53) 
 
 (ig3) 
 
 
 
 5i8 
 
 o-7g8 
 
 1 12-4 
 
 II6-6 
 
 14-9 o ; 7 
 
 121 C 
 
 
 
 
 
 
 
 
 
 
 
 S( 7 
 
 0-794 
 
 75-8 
 
 i i3-g 
 
 + I3-8 
 
 20 101 
 
 556 / 
 
 '97'9 81 
 
 
 0-807 
 
 225-3 
 
 
 
 
 
 692 
 
 
 
 0-866 
 
 141-5 
 
 
 
 
 
 583 
 
 
 5i6 
 
 0-871 
 
 242-3 
 
 142-5 
 
 21-2 
 
 o 
 
 '7 
 
 
 July 12 
 
 
 
 
 
 
 (173) 
 
 (902) 
 
 (1926) 
 
 
 5i6 
 
 0-857 
 
 244-1 
 
 141-4 
 
 -jg-2 
 
 17 
 
 5 9 
 
 370 c \ 
 
 
 
 
 
 
 
 
 
 
 
 5i8 
 
 0-638 
 
 240-3 
 
 121-7 
 
 -I 4 *5 
 
 II 
 
 23 
 
 
 
 
 
 
 
 
 
 
 
 
 5i8 
 
 0-618 
 
 238-6 
 
 1 19-8 
 
 -14*7 
 
 
 
 10 
 
 
 192-980 
 
 
 0-866 
 
 238-7 
 
 
 
 
 
 463 
 
 
 521 
 
 0-826 
 
 76-1 
 
 3i'4 
 
 + 14-2 
 
 26 
 
 122 
 
 
 
 5i5 
 
 797 
 
 284-6 
 
 2o5'5 
 
 + 14-2 
 
 42 
 
 272 
 
 
 
 521 
 
 0-880 
 
 76-8 
 
 25-2 
 
 + i3*g 
 
 
 
 52 
 
 323 c 
 
 
 5i5 
 
 0-757 
 
 287-2 
 
 201-6 
 
 + I5-8 
 
 5 
 
 4 5 
 
 1 124 n 
 
 
 522 
 
 0-973 
 
 72-2 
 
 g-6 
 
 + 18-5 
 
 u5 
 
 382 
 
 3go/ 
 
 
 ")!() 
 
 0-754 
 
 240-7 
 
 196-7 
 
 18-4! o 
 
 5 
 
 
 July 1 8 
 
 
 
 
 
 
 (169) 
 
 (665) 
 
 (775) 
 
 i 
 
 
 
 
 
 
 
 
 
 
 * Indian photo. The Areas of Spots and Faculse are expressed in Millionths of the Sun's visible Hemisphere. t Melbourne photo. 
 
REDUCTION OF SOLAR PHOTOGRAPHS THROUGHOUT 1878-1881. 
 
 01 
 
 .MKVSL-HES of POSITIONS and AREAS of Si-ors uml KM ri..v. upon tho SON'S Disc on PHOTOGRAPHS taken in the YI.AK 1881 continued. 
 
 
 
 Dis- 
 
 
 HKI.IOCH vi-iiic 
 
 Sr.)TS. 
 
 FACUL.K 
 
 
 
 Dis- 
 
 
 HKMOQRAPIUC 
 
 SPOTS. 
 
 FACUL*. 
 
 Mean 
 Belar 
 
 Time. 
 
 No. of 
 (iroup, 
 and 
 Letter 
 for 
 
 Spot 
 
 tance 
 from 
 Centre 
 in 
 terms 
 of 
 Sun's 
 Radius. 
 
 Position 
 
 from 
 
 Sun's 
 Axis. 
 
 
 
 
 Mean 
 Solar 
 Time. 
 
 Xo. of 
 iroup, 
 and 
 Letter 
 
 for 
 Spot. 
 
 tance 
 from 
 Centre 
 in 
 terms 
 of 
 Sun's 
 Radius. 
 
 position 
 Angle 
 from 
 Sun's 
 Axis. 
 
 
 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBRA 
 
 for each 
 Spot 
 (and lor 
 
 Area of 
 
 \VI10I.K 
 for each 
 
 1 s !' '' 
 (and for 
 Day). 
 
 Ai.'a for 
 each 
 Group 
 (and for 
 Day). 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBRA 
 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 
 \vnoi.i-: 
 
 for each 
 Spot 
 (and for 
 Ray). 
 
 Area for 
 Mob 
 
 ( iroup 
 
 (and for 
 Day). 
 
 1 88 1. 
 
 
 
 
 
 o 
 
 o 
 
 
 
 
 1881. 
 
 
 
 o 
 
 o 
 
 o 
 
 
 
 
 IQ9 d -026 
 
 
 0-887 
 
 224-7 
 
 
 
 
 
 4i3 
 
 2O3 d '92O 
 
 525 
 
 o-83o 
 
 63-2 
 
 3i3'7 
 
 + 25-1 
 
 9 
 
 44 
 
 
 
 0-762 
 
 229-3 
 
 
 
 
 
 1 60 
 
 
 526 
 
 0-866 
 
 62-4 
 
 3og-6 
 
 4-26-5 
 
 36 
 
 3i3 
 
 3g5c 
 
 
 016 
 
 0-952 
 
 247-8 
 
 142-0 
 
 -19-3 
 
 21 
 
 97 
 
 56 7 sj 
 
 
 52 7 
 
 0-847 
 
 109-7 
 
 3 1 3-5 
 
 -i 3-6 
 
 
 
 34 
 
 
 
 5i8 
 
 O'Soo 
 
 2 4 8- 4 
 
 I22'9 
 
 i3-g 
 
 12 
 
 3i 
 
 
 
 52 7 
 
 0-872 
 
 iog-3 
 
 3io'6 
 
 13-9 
 
 o 
 
 3o 
 
 
 
 5i8 
 
 0-780 
 
 248-8 
 
 111*0 
 
 i 3-3 
 
 O 
 
 8 
 
 189 c 
 
 
 528 
 
 0-918 
 
 108-1 
 
 304-4 
 
 -i 4 -3 
 
 12 
 
 83 
 
 
 
 023 
 
 0'45q 
 
 2g2'6 
 
 98-8 
 
 4-14-5 
 
 
 
 1 1 
 
 
 
 
 o-g5g 
 
 108-9 
 
 
 
 
 
 8g3 
 
 
 521 
 
 0-667 
 
 73-5 
 
 3 1-9 
 
 + 14'6 
 
 32 
 
 146 
 
 
 July 24* 
 
 
 
 
 
 
 (20 9 ) 
 
 ( H 53) 
 
 (i6o3) 
 
 
 521 
 
 0-682 
 
 70-5 
 
 3o-5 
 
 + 13-5 
 
 12 
 
 3 4 
 
 
 
 
 
 
 
 
 
 
 
 
 521 
 
 0719 
 
 76-5 
 
 27-4 
 
 4- i3-i 
 
 12 
 
 48 
 
 
 
 
 
 
 
 
 
 
 
 
 521 
 
 0-747 
 
 74'9 
 
 25-1 
 
 4-14-5 
 
 O 
 
 26 
 
 222 C 
 
 204-966 
 
 
 0-939 
 
 232'O 
 
 
 
 
 
 1 36 
 
 
 522 
 
 o-8g3 
 
 7 i-5 
 
 9'9 
 
 + 18-7 
 
 86 
 
 3 4 7 
 
 3 4 8/ 
 
 
 524 
 
 0-864 
 
 285-6 
 
 53-2 
 
 4-16-2 
 
 2 9 
 
 96 
 
 
 July 19 
 
 
 
 
 
 
 (75) 
 
 (748) 
 
 ('899) 
 
 
 524 
 
 0'838 
 
 284-5 
 
 5i*5 
 
 4-i5-i 
 
 O 
 
 H 
 
 
 
 
 
 
 
 
 
 
 
 
 52 4 
 
 0-816 
 
 287-4 
 
 48-9 
 
 4-17-3 
 
 i3 
 
 53 
 
 
 199-587 
 
 
 0-846 
 
 249-7 
 
 
 
 
 
 6g5 
 
 
 52 4 
 
 0-807 
 
 289-1 
 
 47'9 
 
 + 18-6 
 
 4 
 
 ii 
 
 243 c 
 
 
 
 0-820 
 
 232-8 
 
 
 
 
 
 504 
 
 
 521 
 
 0-618 
 
 278-2 
 
 32- 7 
 
 4- 9'3 
 
 i5 
 
 23 
 
 
 
 521 
 
 o 060 
 
 70-2 
 
 32- 7 
 
 4-iS-i 
 
 24 
 
 134 
 
 
 
 521 
 
 0*600 
 
 279-9 
 
 3i-3 
 
 4-10-3 
 
 3 
 
 16 
 
 
 
 521 
 
 0-579 
 
 72-9 
 
 3ro 
 
 4-13-g 
 
 8 
 
 4 3 
 
 
 
 021 
 
 0-597 
 
 277-5 
 
 3l'2 
 
 4- 8-8 
 
 
 
 4 
 
 
 
 521 
 
 0-621 
 
 74-2 
 
 27-8 
 
 4-13-7 
 
 '7 
 
 5i 
 
 
 
 521 
 
 0-602 
 
 286-8 
 
 3o-g 
 
 + >4"4 
 
 10 
 
 90 
 
 
 
 522 
 
 0-827 
 
 6g-g 
 
 10-4 
 
 4- ig-3 
 
 85 
 
 33i 
 
 
 
 521 
 
 o-55 4 
 
 280-9 
 
 27-9 
 
 4 o-6 
 
 3 
 
 24 
 
 
 
 
 0-912 
 
 70-3 
 
 
 
 
 
 IOOO 
 
 
 521 
 
 o-536 
 
 280-4 
 
 26-8 
 
 4-10-1 
 
 8 
 
 22 
 
 
 
 
 0-912 
 
 "07-9 
 
 
 
 
 
 i3oo 
 
 
 522 
 
 o-3 4 g 
 
 3 1 5-5 
 
 9-5 
 
 4-19-6 
 
 53 
 
 290 
 
 
 July 2of 
 
 
 
 
 
 
 ('34) 
 
 (55g) 
 
 (3499) 
 
 
 522 
 
 0-317 
 
 319-0 
 
 
 4-ig-i 
 
 o 
 
 6 
 
 
 
 
 
 
 
 
 
 
 
 
 525 
 
 0-576 
 
 58-g 
 
 322-5 
 
 4-21-0 
 
 4 
 
 8 
 
 
 200-942 
 
 
 0-926 
 
 246-8 
 
 
 
 
 
 542 
 
 
 525 
 
 0-621 
 
 56- 9 
 
 3ig-8 
 
 4-24-2 
 
 76 
 
 323 
 
 
 
 
 0-689 
 
 216-8 
 
 
 
 
 
 33g 
 
 
 525 
 
 0-657 
 
 57-6 
 
 317-0 
 
 4-24-9 
 
 4 
 
 124 
 
 3o6 c 
 
 
 523 
 
 0-807 
 
 283-8 
 
 101-4 
 
 + i 4 ;2 
 
 16 
 
 98 
 
 
 
 526 
 
 0-726 
 
 58-2 
 
 3iri 
 
 +26-4 
 
 34 
 
 79 
 
 
 
 023 
 
 0-770 
 
 284-6 
 
 98-3 
 
 
 4' 
 
 108 
 
 411;} 
 
 
 526 
 
 0-755 
 
 58-5 
 
 308-4 
 
 4-27-0 
 
 63 
 
 249 
 
 485 c 
 
 
 521 
 
 0'3 10 
 
 55- 4 
 
 32-2 
 
 4-15-2 
 
 3 4 
 
 122 
 
 
 
 52 7 
 
 0-692 
 
 1 5-9 
 
 3'4'9 
 
 13-4 
 
 6 
 
 '7 
 
 
 
 521 
 
 0-355 
 
 71-1 
 
 2 7 -8 
 
 + 11-4 
 
 
 
 i5 
 
 
 
 52 7 
 
 0-726 
 
 14-4 
 
 3n-g 
 
 134 
 
 
 
 1 1 
 
 
 
 521 
 
 0-376 
 
 66-8 
 
 27-0 
 
 4-13-3 
 
 o 
 
 10 
 
 
 
 528 
 
 o- 77 3 
 
 i3-8 
 
 307-8 
 
 -H-5 
 
 o 
 
 2 
 
 
 
 521 
 
 0-432 
 
 74'7 
 
 22-7 
 
 4-n-i 
 
 
 
 n 
 
 
 
 528 
 
 0-801 
 
 12-4 
 
 304-9 
 
 -14-2 
 
 29 
 
 1 13 
 
 
 
 522 
 
 0-644 
 
 65-8 
 
 9'4 
 
 4-19-3 
 
 114 
 
 402 
 
 442 / 
 
 
 528 
 
 0-837 
 
 12-7 
 
 3oi'4 
 
 -i5-6 
 
 20 
 
 5 9 
 
 
 
 
 0-819 
 
 1 14-0 
 
 
 
 
 
 1043 
 
 
 528 
 
 0-855 
 
 11-7 
 
 299-2 
 
 15-3 
 
 '4 
 
 94 
 
 
 July 21 
 
 
 
 
 
 
 (205) 
 
 (770 
 
 (2777) 
 
 
 528 
 
 0-880 
 
 12-2 
 
 296-5 
 
 -i 6-6 
 
 3 4 
 
 i3o 
 
 
 
 
 
 
 
 
 
 
 
 
 528 
 
 0-892 
 
 10-8 
 
 294-7 
 
 -i5- 7 
 
 28 
 
 78 
 
 602 c 
 
 202-583 
 
 
 o-855 
 
 234-7 
 
 
 
 
 
 477 
 
 
 
 0-884 
 
 7 o-3 
 
 
 
 
 
 "47 
 
 
 523 
 
 0-945 
 
 283-3 
 
 97-5 
 
 + I4-3 
 
 o 
 
 75 
 
 73o np 
 
 July 20 
 
 
 
 
 
 
 (460) 
 
 (2036) 
 
 (igig) 
 
 
 521 
 
 o-ig3 
 
 33 1 -6 
 
 3r5 
 
 + 14-9 
 
 22 
 
 125 
 
 
 
 
 
 
 
 
 
 
 
 
 522 
 
 0-372 
 
 47-2 
 
 9-3 
 
 + 19-6 
 
 68 
 
 328 
 
 
 
 
 
 
 
 
 
 
 
 
 525 
 
 o- 9 2 7 
 
 65-8 
 
 3 1 8-3 
 
 4-24-3 
 
 70 
 
 25l 
 
 79* P 
 
 2o6-o35 
 
 524 
 
 0-909 
 
 286-3 
 
 5 4 -5 
 
 4-17-2 
 
 56 
 
 176 
 
 
 
 526 
 
 0-968 
 
 6 4 -3 
 
 3og-g 
 
 + 26-2 
 
 
 
 i3o 
 
 
 
 52 4 
 
 0-934 
 
 286-8 
 
 49-9 
 
 4-17-6 
 
 6 
 
 18 
 
 
 
 
 O'g i o 
 
 78-9 
 
 
 
 
 
 792 
 
 
 524 
 
 0-926 
 
 286-3 
 
 48-6 
 
 + 17-2 
 
 21 
 
 47 
 
 38 1 c 
 
 July 23f 
 
 
 
 
 
 
 (1 60) 
 
 (909) 
 
 (279') 
 
 
 521 
 
 0-797 
 
 277-9 
 
 33-3 
 
 + 97 
 
 '7 
 
 56 
 
 
 
 
 
 
 
 
 
 
 
 
 521 
 
 0-778 
 
 278-4 
 
 3r6 
 
 4- io'o 
 
 
 
 10 
 
 
 
 
 
 
 
 
 
 
 
 
 521 
 
 0-744 
 
 279-8 
 
 28-5 
 
 4- 10-9 
 
 i 
 
 2 
 
 1 55 c 
 
 2o3-g2o 
 
 
 o-g58 
 
 240-7 
 
 
 
 
 
 3i5 
 
 
 021 
 
 0-775 
 
 283-6 
 
 3n 
 
 4-14-0 
 
 20 
 
 IOO 
 
 528 / 
 
 
 524 
 
 0-739 
 
 289-8 
 
 55-2 
 
 + 18-1 
 
 o 
 
 12 
 
 
 
 522 C'522 
 
 299-2 
 
 9-2 
 
 + 19*6 
 
 38 
 
 246 
 
 
 
 52 4 
 
 0-701 
 
 289-0 
 
 52-1 
 
 + 17'4 
 
 7 
 
 35 
 
 
 
 525 0-384 
 
 40-7 
 
 324-8 
 
 + 22-2 
 
 o 
 
 3 
 
 
 
 52 4 
 
 0-674 
 
 290-1 
 
 49-6 
 
 4-I7-3 
 
 2 
 
 1 1 
 
 
 
 525 0-402 
 
 5o-5 
 
 32T2 
 
 4-20-0 
 
 i 
 
 4 
 
 
 
 524 
 
 0-662 
 
 2 9>"4 
 
 48-6 
 
 4-18-0 
 
 2 
 
 22 
 
 
 
 520 0*456 
 
 45-0 
 
 3 1 9'8 
 
 4-23-q 
 
 98 
 
 352 
 
 
 
 591 
 
 0-412 
 
 294-1 
 
 3l'2 
 
 4-14-6 
 
 20 
 
 IOO 
 
 
 
 525 0*494 
 
 47'' 
 
 317-0 
 
 + 24-7 
 
 7 
 
 49 
 
 
 
 521 
 
 0-391 
 
 283-0 
 
 3ro 
 
 + 9*9 
 
 
 
 25 
 
 
 
 52g o*3g8 
 
 67-9 
 
 3i8-2 
 
 + I3-7 
 
 5 
 
 2 4 
 
 
 
 521 
 
 0-343 
 
 286-6 
 
 27-8 
 
 4-10-6 
 
 18 
 
 53 
 
 
 
 026 0-604 
 
 5i-2 
 
 308-7 
 
 4-26-9 
 
 1 35 
 
 552 
 
 3 9 3/ 
 
 
 522 
 
 0-248 
 
 355-1 
 
 9'7 
 
 4I9-5 
 
 5i 
 
 256 
 
 
 
 527 o-5i5 
 
 127-7 
 
 3i5'7 
 
 -i3-3 
 
 4 
 
 ii 
 
 
 
 522 
 
 o'2g3 
 
 14-5 
 
 
 4-21-7 
 
 o 
 
 3i 
 
 
 
 027 
 
 0-555 
 
 I2V7 
 
 3i2-5 
 
 -i 3-5 
 
 i 
 
 7 
 
 
 
 0280 
 
 0-716 
 
 77-1 
 
 322-8 
 
 4-i3-o 
 
 5 
 
 28 
 
 
 
 028 
 
 0-655 
 
 119-3 
 
 304-4 
 
 -14-2 
 
 32 
 
 126 
 
 
 
 525 
 
 0771 
 
 62-5 
 
 32O-0 
 
 + 24-5 
 
 47 
 
 376 
 
 
 
 528 
 
 0-696 
 
 119-1 
 
 301-4 
 
 1 5-o 
 
 22 
 
 128 
 
 
 * Indian photo. The Areas of Spots and Facute are expressed in Millionth* of the Sun's visible Hemisphere. t Melbourne photo. 
 
62 
 
 KEDUCTION OF SOLAR PHOTOGRAPHS THROUGHOUT 1878-1881. 
 
 MEASURES of POSITIONS and AREAS of SPOTS and FACUL.E upon the SUN'S DISK on PHOTOGRAPHS taken in the YEAR 1881 continued. 
 
 
 
 Dis- 
 
 
 HELIOGKAPHIC 
 
 SPOTS. 
 
 FACUL/E. 
 
 
 
 Dis- 
 
 
 HELIOGKAPIIIC 
 
 Sl'OTS. 
 
 FACUI..K. 
 
 Mean 
 Solar 
 Time. 
 
 No. of 
 Group, 
 and 
 Letter 
 for 
 Spot. 
 
 tance 
 from 
 Centre 
 in 
 terms 
 of 
 Sun's 
 Radius. 
 
 Position 
 Angle 
 from 
 Sun's 
 Axis. 
 
 
 
 
 Mean 
 Solar 
 Time. 
 
 No. of 
 Group, 
 and 
 Letter 
 for 
 Spot. 
 
 tance 
 from 
 Centre 
 in 
 terms 
 of 
 Sun's 
 Radius. 
 
 Position 
 Angle 
 from 
 Sun's 
 Axis. 
 
 
 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBRA 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 WHOLE 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBRA 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 WHOLK 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 1881. 
 
 
 
 o 
 
 o 
 
 o 
 
 
 
 
 1881. 
 
 
 
 o 
 
 o 
 
 o 
 
 
 
 
 2o6 d -o35 
 
 528 
 
 0-700 
 
 118-6 
 
 298-6 
 
 -i6-3 
 
 
 
 i5 
 
 
 2o8 d -8g8 
 
 528 
 
 0*402 
 
 164-0 
 
 295-9 
 
 16-9 
 
 7 
 
 5o 
 
 
 
 528 
 
 0-782 
 
 116-3 
 
 293-6 
 
 16-5 
 
 i3 
 
 i36 
 
 680 c 
 
 
 53i 0-224 
 
 ig- 4 
 
 298-1 
 
 + 17-9 
 
 4 5 
 
 201 
 
 
 
 
 0-826 
 
 66-7 
 
 
 
 
 
 720 
 
 
 532 
 
 0279 
 
 37-4 
 
 2g2-3 
 
 + 18-4 
 
 44 
 
 209 
 
 
 July 26 
 
 
 
 
 
 
 (477) 
 
 (2062) 
 
 (285 7 ) 
 
 
 533 
 
 0-833 
 
 72-2 
 
 246-3 
 
 + 18-0 
 
 7 
 
 10 
 
 
 
 
 
 
 
 
 
 
 
 
 533 
 
 0-872 
 
 7'"4 
 
 241-8 
 
 + 19-0 
 
 
 
 16 
 
 507 c 
 
 206-715 
 
 521 
 
 0-883 
 
 278-2 
 
 33-6 
 
 + 9-8 
 
 o 
 
 '4 
 
 
 
 
 0745 
 
 497 
 
 
 
 
 
 187 
 
 
 521 
 
 0-863 
 
 277-0 
 
 3l'2 
 
 + 8-9 
 
 o 
 
 7 
 
 
 
 
 o-gSo 
 
 I I 2-8 
 
 
 
 
 
 190 
 
 
 521 
 
 o-85q 
 
 278-2 
 
 3o*7 
 
 + 9'9 
 
 o 
 
 6 
 
 
 'July 2g 
 
 
 
 
 
 
 (35 7 ) 
 
 (i5i5) 
 
 (2 i 35) 
 
 
 521 
 
 o-85g 
 
 282-8 
 
 3o*7 
 
 + I3-8 
 
 IO 
 
 2 9 
 
 
 
 
 
 
 
 
 
 
 
 
 522 
 
 0-632 
 
 293-9 
 
 8'9 
 
 + '9'3 
 
 4' 
 
 u5 
 
 92 1 nf 
 
 20g-g53 
 
 
 o-g56 
 
 - 2go-3 
 
 
 
 
 
 616 
 
 
 525 
 
 0-367 
 
 3o-3 
 
 319-7 
 
 + 23-g 
 
 64 
 
 2g5 
 
 
 
 534 
 
 0-643 
 
 23i"4 
 
 320*4 
 
 -187 
 
 6 
 
 37 
 
 
 
 5z5 
 
 o 401 
 
 33-8 
 
 317-1 
 
 + 24-8 
 
 o 
 
 9 
 
 
 
 534 
 
 0-620 
 
 22g-o 
 
 3i8-o 
 
 18-9 
 
 2 
 
 i5 
 
 
 
 525 
 
 0-456 
 
 35-g 
 
 3 1 3-9 
 
 + 27-0 
 
 o 
 
 4 
 
 
 
 525 
 
 o'565 
 
 304-6 
 
 3 1 8-9 
 
 + 237 
 
 42 
 
 244 
 
 
 
 5 2 5 
 
 0-473 
 
 3 7 -i 
 
 3i2-6 
 
 + 27-4 
 
 o 
 
 4 
 
 
 
 526 
 
 0-498 
 
 3,197 
 
 309-7 
 
 + 27-7 
 
 4 
 
 '9 
 
 
 
 525 
 
 0-469 
 
 40-0 
 
 3l2'2 
 
 + 25-9 
 
 6 
 
 35 
 
 
 
 526 
 
 0-459 
 
 324-3 
 
 3o6-o 
 
 + 27-3 
 
 9 3 
 
 457 
 
 
 
 525 
 
 0-495 
 
 3 7 -i 
 
 3i r5 
 
 + 28-4 
 
 o 
 
 4 
 
 
 
 528 
 
 0-462 
 
 2i5-5 
 
 304-3 
 
 i 6-0 
 
 4 
 
 22 
 
 
 
 526 
 
 o-Sog 
 
 43-3 
 
 3o8'4 
 
 + 26-8 
 
 94 
 
 
 
 
 528 
 
 0-414 
 
 211-8 
 
 3oi-5 
 
 -14-9 
 
 27 
 
 123 
 
 
 
 52g 
 
 0-271 
 
 54-7 
 
 3i8-5 
 
 + '4'4 
 
 7 
 
 26 
 
 
 
 528 
 
 0-402 
 
 1987 
 
 296-2 
 
 i 6-5 
 
 18 
 
 5 4 
 
 
 
 52 7 
 
 0-446 
 
 137-6 
 
 3i3-6 
 
 i 3-g 
 
 o 
 
 18 
 
 
 
 53 1 
 
 0-273 
 
 321'2 
 
 298-8 
 
 -r-iS-o 
 
 60 
 
 224 
 
 
 
 527 
 
 0-454 
 
 1 33-o 
 
 3n-8 
 
 127 
 
 
 
 9 
 
 
 
 53 1 
 
 0-244 
 
 325'7 
 
 296-7 
 
 + 17-4 
 
 9 
 
 22 
 
 
 
 528 
 
 o-54g 
 
 126-0 
 
 304-2 
 
 13'8 
 
 38 
 
 89 
 
 
 
 53 1 
 
 0-242 
 
 334-4 
 
 294-8 
 
 + 18-3 
 
 '9 
 
 68 
 
 
 
 528 
 
 0-089 
 
 126-1 
 
 3or8 
 
 -i 5-4 
 
 2 9 
 
 70 
 
 
 
 53 1 
 
 0-209 
 
 340-3 
 
 292-7 
 
 + 17-1 
 
 8 
 
 27 
 
 
 
 528 
 
 0-606 
 
 123-9 
 
 3oo-i 
 
 '4'9 
 
 o 
 
 3l 
 
 
 
 532 
 
 0-222 
 
 345-4 
 
 291-8 
 
 + 18-1 
 
 25 
 
 136 
 
 
 
 628 
 
 0-694 
 
 I 21-0 
 
 293-1 
 
 16-6 
 
 39 
 
 120 
 
 
 
 533 
 
 0-686 
 
 69-4 
 
 246-1 
 
 + I8-3 
 
 o 
 
 4 
 
 
 July 27* 
 
 
 
 
 
 
 (328) 
 
 (.33 4 ) 
 
 (9^0 
 
 
 536 
 
 0779 
 
 65-3 
 
 238-6 
 
 + 22-8 
 
 o 
 
 16 
 
 
 
 
 
 
 
 
 
 
 
 
 536 
 
 0-802 
 
 6i-5 
 
 236-g 
 
 + 26-2 
 
 o 
 
 28 
 
 
 207'gi2 
 
 
 0-780 
 
 240-8 
 
 
 
 
 
 25l 
 
 
 535 
 
 0-846 
 
 117-4 
 
 235-g 
 
 -19-4 
 
 3 
 
 3i 
 
 1 3g c 
 
 
 521 
 
 '977 
 
 279'4 
 
 33-8 
 
 + 10-4 
 
 28 
 
 i58 
 
 
 
 535 
 
 0-885 
 
 116-8 
 
 23i-3 
 
 2O'4 
 
 o 
 
 32 
 
 
 
 521 
 
 0-964 
 
 283-3 
 
 3o-8 
 
 + 14-3 
 
 o 
 
 i5 
 
 
 
 
 0-795 
 
 65-i 
 
 
 
 
 
 299 
 
 
 521 
 
 o-g5o 
 
 279-6 
 
 27-8 
 
 + 10-9 
 
 o 
 
 '9 
 
 533 c 
 
 July3o* 
 
 
 
 
 
 
 (320) 
 
 (i56 9 ) 
 
 (1054) 
 
 
 522 
 
 o-8o3 
 
 290-5 
 
 8-4 
 
 -r-ig-8 
 
 '4 
 
 58 
 
 278 nf 
 
 
 
 
 
 
 
 
 
 
 
 53o 
 
 o-2 94 
 
 335-8 
 
 322-6 
 
 + 9'9 
 
 o 
 
 8 
 
 
 2irg35 
 
 53 4 
 
 0-897 
 
 247-3 
 
 322-2 
 
 -l 7 -3 
 
 53 
 
 145 
 
 235 / 
 
 
 525 
 
 0-321 
 
 349-3 
 
 319-3 
 
 + 23-9 
 
 61 
 
 323 
 
 
 
 525 
 
 0-834 
 
 2g5-2 
 
 317-9 
 
 + 24-2 
 
 76 
 
 265 
 
 1010 S 
 
 
 5z5 
 
 0-366 
 
 11-4 
 
 3 1 0-9 
 
 + 26-6 
 
 
 
 6 
 
 
 
 526 
 
 0-716 
 
 3o3'7 
 
 304-5 
 
 + 27-8 
 
 132 
 
 573 
 
 489 <* 
 
 
 529 
 
 0-137 
 
 340-6 
 
 3i8-2 
 
 + i3-o 
 
 2 
 
 12 
 
 
 
 5 2 8 
 
 0-734 
 
 242-4 
 
 304-6 
 
 -i 5-5 
 
 '9 
 
 66 
 
 
 
 526 
 
 o'3go 
 
 19-4 
 
 307-2 
 
 + 27-1 
 
 129 
 
 5i i 
 
 
 
 628 
 
 0-634 
 
 1 35-2 
 
 295-0 
 
 I 6'2 
 
 o 
 
 4 6 
 
 
 
 527 
 
 0-339 
 
 172-6 
 
 3 1 3'o 
 
 i3-g 
 
 
 
 20 
 
 
 
 53 1 
 
 o-63o 
 
 294-0 
 
 299-8 
 
 + 19-0 
 
 42 
 
 19' 
 
 
 
 528 
 
 o-38o 
 
 149-1 
 
 304-0 
 
 13-4 
 
 '4 
 
 8l 
 
 
 
 53 1 
 
 0-575 
 
 2g3-7 
 
 295-9 
 
 + i8-3 
 
 7 
 
 26 
 
 
 
 528 
 
 0-428 
 
 146-8 
 
 3oi-6 
 
 i 5-4 
 
 22 
 
 88 
 
 
 
 532 
 
 0'52I 
 
 2g7'3 
 
 291-5 
 
 + 19-1 
 
 35 
 
 216 
 
 
 
 528 
 
 0-504 
 
 i38-g 
 
 295-4 
 
 i6-g 
 
 i5 
 
 83 
 
 
 
 535 
 
 0-573 
 
 1 36-5 
 
 237-8 
 
 -19-1 
 
 5 
 
 21 
 
 
 
 53 1 
 
 0-374 
 
 5 4 -8 
 
 296-9 
 
 + 17-8 
 
 3i 
 
 1 5 7 
 
 
 
 535 
 
 o-5gi 
 
 i35-o 
 
 236-2 
 
 ig-3 
 
 7 
 
 28 
 
 
 
 532 
 
 0-443 
 
 58-3 
 
 292-2 
 
 + 18-6 
 
 18 
 
 1 06 
 
 
 
 535 
 
 0-635 
 
 i3r5 
 
 232-1 
 
 -'97 
 
 o 
 
 18 
 
 
 
 533 
 
 o- 9 34 
 
 7 3-2 
 
 246-0 
 
 + 177 
 
 7 
 
 19 
 
 63 1 n 
 
 
 536 
 
 0-536 
 
 47-5 
 
 236-2 
 
 4-26-5 
 
 o 
 
 23 
 
 
 
 
 o-85o 
 
 56-3 
 
 
 
 
 
 232 
 
 
 537 
 
 o-go3 
 
 76-0 
 
 197-4 
 
 + l5'2 
 
 o 
 
 21 
 
 918 np 
 
 July 28 
 
 
 
 
 
 
 (3 4 i) 
 
 (1664) 
 
 0925) 
 
 
 538 
 
 o-g88 
 
 77-0 
 
 180-4 
 
 + 13-7 
 
 o 
 
 218 
 
 214 c 
 
 
 
 
 
 
 
 
 
 
 
 
 O-Q25 
 
 114-8 
 
 
 
 
 
 3l4 
 
 208-898 
 
 
 0-857 
 
 248-7 
 
 
 
 
 
 5 4 i 
 
 Atlg. 1 
 
 
 y 
 
 
 
 
 (3 7 6) 
 
 (i85 7 ) 
 
 (3 i 85) 
 
 
 522 
 
 o-go 7 
 
 289-3 
 
 7-8 
 
 + 19-9 
 
 6 
 
 i5 
 
 7' nf 
 
 
 
 
 
 
 
 
 
 
 
 525 
 
 '49 
 
 320-1 
 
 3ig'i 
 
 + 23-7 
 
 7 
 
 3oo 
 
 
 2 1 3'OO I 
 
 
 0-8 1 5 
 
 246-0 
 
 
 
 
 
 1067 
 
 
 525 
 
 0-397 
 
 335-0 
 
 3i3-3 
 
 + 26-6 
 
 
 
 13 
 
 
 
 
 0-724 
 
 2gi-5 
 
 
 
 
 
 445 
 
 
 534 
 
 0-478 
 
 2IO - 6 
 
 3 17-3 
 
 -187 
 
 8 
 
 24 
 
 
 
 534 
 
 -974 
 
 25l'l 
 
 322-3 
 
 16-9 
 
 o 
 
 94 
 
 42,6 p 
 
 
 526 
 
 0-375 
 
 35o-o 
 
 3o6 - 7 
 
 + 27-3 
 
 126 
 
 49 
 
 
 
 525 
 
 o-g35 
 
 293-3 
 
 317-9 
 
 + 23- 9 
 
 1 06 
 
 288 
 
 53i c 
 
 
 528 
 
 0-354 
 
 187-7 
 
 3o5-3 
 
 -14-7 
 
 i 
 
 6 
 
 
 
 526 
 
 0-841 
 
 299-2 
 
 304-0 
 
 4-277 
 
 118 
 
 022 
 
 524 c 
 
 
 528 
 
 O'32O 
 
 182-8 
 
 3o3'4 
 
 12-8 
 
 8 
 
 46 
 
 
 
 528 
 
 0-876 
 
 248-3 
 
 3o5'7 
 
 -i 5-7 
 
 o 
 
 24 
 
 
 
 528 
 
 0-365 
 
 181-6 
 
 3o3'i 
 
 i 5-6 
 
 '9 
 
 67 
 
 
 
 528 
 
 779 
 
 244-1 
 
 294-8 
 
 15-8 
 
 3 
 
 27 
 
 
 
 528 
 
 o-35i 
 
 176-6 
 
 3or3 
 
 -'47 
 
 12 
 
 42 
 
 
 
 53 1 
 
 0-798 
 
 290-1 
 
 300-7 
 
 4- '9'6 
 
 36 
 
 185 
 
 
 
 528 
 
 0-377 
 
 169-9 
 
 298-6 
 
 i 6-0 
 
 4 
 
 21 
 
 
 
 532 
 
 o*6g3 
 
 291-9 
 
 291-0 
 
 + '9'4 
 
 12 
 
 117 
 
 
 * Indian photo. The Areas of Spots and Faculse are expressed in Millionths of the Sun's visible Hemisphere. 
 
Ri:nrrnoN OF SOLAR PHOTOGRAPHS THROUGHOUT 1878-1881. 
 
 63 
 
 MKASVKKS of POSITIONS ami AKKAS of SPOTS and l'Acri..K upon the SUN'S DISK on PHOTOGRAPHS taken in the Vr\it 1881 continued. 
 
 
 
 Dis- 
 
 
 IlKI.loi;i;u'illr 
 
 Sri us. 
 
 FACUL.K. 
 
 
 
 Dis- 
 
 
 HKUOOKAIMIIC 
 
 SPOTS. 
 
 FACULJS. 
 
 
 No. of 
 
 tailt'e 
 frODi 
 
 
 
 
 
 
 
 No. of 
 
 tance 
 
 froMi 
 
 . . 
 
 
 
 
 Mean 
 Solar 
 Time. 
 
 (iroup, 
 and 
 
 I.rttiT 
 
 tot 
 
 Spot, 
 
 ( 'eiil re 
 in 
 
 terms 
 
 of 
 
 Sun's 
 Kadius. 
 
 I OSltlOU 
 
 Angle 
 from 
 Sun's 
 Axis. 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 OMBBA 
 
 for eacli 
 Spot 
 (and for 
 Day). 
 
 Area of 
 WHOLE 
 
 for each 
 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 Mean 
 Solar 
 Time. 
 
 Group, 
 and 
 Letter 
 for 
 Spot. 
 
 Centre 
 in 
 
 terms 
 of 
 Sun's 
 
 \adin-. 
 
 1 O-lt loll 
 
 Angle 
 from 
 
 Sun's 
 
 AM-. 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBRA 
 
 Spot 
 (and for 
 Day). 
 
 Area of 
 
 U'lli ILK 
 for each 
 Spot 
 (and for 
 
 DT). 
 
 Area for 
 
 Group 
 (.and for 
 Day). 
 
 1881. 
 
 
 
 
 
 o 
 
 
 
 
 
 
 1881. 
 
 
 
 
 
 
 
 o 
 
 
 
 
 2l3 ll 'OOI 
 
 535 
 
 o- 4 5; 
 
 i58'o 
 
 237-9 
 
 ig-O 
 
 IO 
 
 26 
 
 
 2ig d -o56 
 
 5 4 3 
 
 0-459 
 
 202-8 
 
 '79'9 
 
 -i 8-6 
 
 29 
 
 i58 
 
 
 
 536 
 
 0-370 
 
 29-6 
 
 236-7 
 
 -4-24-6 
 
 1 
 
 5 
 
 
 
 542 
 
 0-845 
 
 117-4 
 
 1 10-8 
 
 19-0 
 
 5 
 
 12 
 
 2g5 / 
 
 
 53; 
 
 0-7/7 
 
 70-0 
 
 '97'3 
 
 + i5-5 
 
 
 
 20 
 
 972 np 
 
 
 
 0-880 
 
 76-3 
 
 
 
 
 
 483 
 
 
 538 
 
 o-qz3 
 
 78-2 
 
 180-4 
 
 + 13-2 
 
 87 
 
 588 
 
 4840 
 
 Aug. 8 
 
 
 
 
 
 
 (93) 
 
 ( 4 85) 
 
 (1612) 
 
 
 
 0-860 
 
 120-8 
 
 
 
 
 
 670 
 
 
 
 
 
 
 
 
 
 
 Aug. 2 
 
 
 
 
 
 
 (3 7 3) 
 
 (1896) 
 
 (49 2 9) 
 
 220-068 
 
 
 0-797 
 
 291-2 
 
 
 
 
 
 45o 
 
 
 
 
 
 
 
 
 
 
 
 
 0-796 
 
 240-2 
 
 
 
 
 
 186 
 
 2i3'6i6 
 
 
 o-g85 
 
 201-8 
 
 
 
 
 
 1 02 1 
 
 
 540 
 
 o'632 
 
 23o-g 
 
 185-7 
 
 -17-9 
 
 4 
 
 42 
 
 
 
 
 0-882 
 
 249-2 
 
 
 
 
 
 760 
 
 
 538 
 
 0-440 
 
 286-3 
 
 180-4 
 
 + 12-9 
 
 4 
 
 197 
 
 
 
 525 
 
 0-975 
 
 293-0 
 
 3i8-o 
 
 + 23-7 
 
 73 
 
 218 
 
 io56 c 
 
 
 543 
 
 0-567 
 
 223-3 
 
 178-9 
 
 -18-4 
 
 1 1 
 
 5 4 
 
 
 
 526 
 
 o-go5 
 
 297-3 
 
 304-8 
 
 + 27-3 
 
 88 
 
 394 
 
 2870 
 
 
 5 4 3 
 
 0-532 
 
 218-4 
 
 175-1 
 
 i 8-5 
 
 2 
 
 6 
 
 
 
 53 1 
 
 0-882 
 
 288-6 
 
 302-3 
 
 -Hig-3 
 
 48 
 
 207 
 
 2760 
 
 
 543 
 
 o'5 1 5 
 
 214-2 
 
 172-6 
 
 19-0 
 
 1 
 
 2 
 
 
 
 532 
 
 0-789 
 
 289-5 
 
 291-9 
 
 + 19-1 
 
 21 
 
 80 
 
 
 
 5 4 2 
 
 0-725 
 
 124-3 
 
 1 1 5-6 
 
 -19-1 
 
 6 
 
 13 
 
 33o/ 
 
 
 53g 
 
 o-833 
 
 128-5 
 
 193-3 
 
 -27-1 
 
 
 
 27 
 
 
 
 
 0-808 
 
 
 
 
 
 
 238 
 
 
 538 
 
 0-846 
 
 78-2 
 
 182-1 
 
 + I3-3 
 
 61 
 
 407 
 
 
 
 
 0-880 
 
 
 
 
 
 
 214 
 
 
 540 
 
 0-876 
 
 I i5-o 
 
 183-6 
 
 -18-4 
 
 o 
 
 10 
 
 
 Aug. 9 
 
 
 
 
 
 
 (64) 
 
 (3i4) 
 
 (1418) 
 
 
 540 
 
 0-9 1 3 
 
 u3-8 
 
 178-5 
 
 18-8 
 
 
 
 20 
 
 
 
 
 
 
 
 
 
 
 
 
 
 0-874 
 
 124-7 
 
 
 
 
 
 637 
 
 221-094 
 
 
 0-885 
 
 290-2 
 
 
 
 
 
 893 
 
 
 
 o'gi3 
 
 74-4 
 
 
 
 
 
 998 
 
 
 538 
 
 0-628 
 
 282-9 
 
 180-0 
 
 + I3-I 
 
 5i 
 
 '79 
 
 
 
 
 0-937 
 
 "47 
 
 
 
 
 
 58o 
 
 
 5 4 3 
 
 0-707 
 
 235-2 
 
 178-9 
 
 -i 8-6 
 
 12 
 
 89 
 
 4 6 9/> 
 
 Aug. 3* 
 
 
 
 
 
 
 (291) 
 
 (1363) 
 
 (56 1 5) 
 
 
 5 44 
 
 0-718 
 
 i33-i 
 
 106-4 
 
 24-0 
 
 
 
 4 
 
 
 
 
 
 
 
 
 
 
 
 
 
 0-734 
 
 i32-8 
 
 
 
 
 
 200 
 
 2 14-90 1 
 
 
 o- 97 3 
 
 25 r3 
 
 
 
 
 
 796 
 
 
 
 o-g63 
 
 123-5 
 
 
 
 
 
 304 
 
 
 526 
 
 o-g85 
 
 2g6-6 
 
 304-1 
 
 + 27-2 
 
 95 
 
 449 
 
 227 c 
 
 Aug. 10 
 
 
 
 
 
 (63) 
 
 (272) 
 
 (1866) 
 
 
 53 1 
 
 '979 
 
 288-0 
 
 3or8 
 
 -M8-8 
 
 3i 
 
 i53 
 
 
 
 
 
 
 
 
 
 
 
 532 
 
 0-926 
 
 287-7 
 
 290-8 
 
 + 18-6 
 
 o 
 
 79 
 
 442 nf 
 
 221-889 538 
 
 0-755 
 
 281-7 
 
 179-9 
 
 + i3-i 
 
 3o 
 
 172 
 
 97i P 
 
 
 53g 
 
 o'~oo 
 
 140-9 
 
 192-0 
 
 -2 7 -3 
 
 I 
 
 7 
 
 ?3/ 
 
 5 4 3 
 
 0-796 
 
 242-2 
 
 178-1 
 
 -17-4 
 
 
 
 7 
 
 
 
 540 
 
 0-740 
 
 122-4 
 
 i8r3 
 
 -187 
 
 21 
 
 04 
 
 266 c 
 
 
 5 4 5 
 
 0-578 
 
 1 8o-5 
 
 l3l'2 
 
 -28-6 
 
 o 
 
 5 
 
 
 
 538 
 
 0-674 
 
 76-9 
 
 1 8o-3 
 
 + I3-3 
 
 5 7 
 
 3g8 
 
 5iow/ 
 
 
 546 
 
 0-587 
 
 176-2 128-2 
 
 29-2 
 
 5 
 
 20 
 
 
 Aug. 4 
 
 
 
 
 
 
 (205) 
 
 (1140) 
 
 (2414) 
 
 
 5 4 6 
 
 o'5g2 
 
 172-9 
 
 125-g 
 
 29-3 
 
 21 
 
 37 
 
 
 
 
 
 
 
 
 
 
 
 
 5 4 2 
 
 0-498 
 
 149-5 
 
 1 1 5-3 
 
 19-0 
 
 
 
 6 
 
 
 216-061 
 
 
 0-968 
 
 292-0 
 
 
 
 
 
 203 
 
 
 
 o'8 n 
 
 i5r3 
 
 
 
 
 
 276 
 
 
 
 0797 
 
 3o5'3 
 
 
 
 
 
 114 
 
 
 
 0-929 
 
 124-5 
 
 
 
 
 
 194 
 
 
 5 4 i 
 
 0-384 
 
 325-2 
 
 221-7 
 
 + 24-3 
 
 3 
 
 IO 
 
 
 
 
 o-g64 
 
 7 3- 7 
 
 
 
 
 
 2q2 
 
 
 540 
 
 0-583 
 
 134-8 
 
 182-0 
 
 i 8-6 
 
 '4 
 
 68 
 
 
 Aug. ii 
 
 
 
 
 
 
 (56) 
 
 (247) 
 
 (2582) 
 
 
 538 
 
 0-464 
 
 74-2 
 
 180-7 
 
 + 12-8 
 
 49 
 
 225 
 
 
 
 
 
 
 
 
 
 
 
 538 
 
 o- 49 5 
 
 76-0 
 
 178-0 
 
 + 12-3 
 
 7 
 
 IO2 
 
 
 222-780 
 
 0-934 
 
 247-6 
 
 
 
 
 
 746 
 
 
 
 o-8g3 
 
 I20'2 
 
 
 
 
 
 647 
 
 
 538 
 
 0-868 
 
 281-0 
 
 179-7 
 
 + 12-8 
 
 49 
 
 171 
 
 1 148 P 
 
 Aug. 5 
 
 
 
 
 
 
 (83) 
 
 (405) 
 
 (964) 
 
 
 5 4 6 
 
 o'Sgi 
 
 190-3 
 
 125-g 
 
 -28-8 
 
 10 
 
 5i 
 
 
 
 
 
 
 
 
 
 
 
 
 
 0-912 
 
 71-1 
 
 
 
 
 
 635 
 
 
 
 
 
 
 
 
 
 
 Aug. 12* 
 
 
 
 
 
 
 (9) 
 
 (Ml) 
 
 (252 9 ) 
 
 216-998 
 
 
 0-897 
 
 3o2'5 
 
 
 
 
 
 247 
 
 
 
 
 
 
 
 
 
 
 
 
 0-807 
 
 291-7 
 
 
 
 
 
 182 
 
 223-771 
 
 
 o- 97 8 
 
 25o-i 
 
 
 
 
 
 1042 
 
 
 5 4 i 
 
 O'5l2 
 
 3o8-2 
 
 221-4 
 
 + 24-1 
 
 2 
 
 16 
 
 
 
 
 o-gi 7 
 
 287-1 
 
 
 
 
 
 653 
 
 
 040 
 
 0-476 
 
 i52-3 
 
 182-0 
 
 -i 8-7 
 
 i5 
 
 104 
 
 
 538 
 
 0-907 
 
 281-1 
 
 79-8 
 
 + 12-6 
 
 44 128 445 
 
 
 538 
 
 0-274 
 
 60-4 
 
 180-7 
 
 + I2-6 
 
 38 
 
 210 
 
 
 5 4 6 
 
 0-638 
 
 205'0 
 
 124-0 
 
 -28-7 
 
 2 64 
 
 
 538 
 
 o - 2g5 
 
 70-2 
 
 179-0 
 
 + 11-8 
 
 6 
 
 74 
 
 
 
 0-910 
 
 82-3 
 
 
 
 47 
 
 
 5 4 2 
 
 o-ggo 
 
 I lO'O 
 
 ii 6-5 
 
 -18-6 
 
 
 
 41 ogisp 
 
 Aug. i3* 
 
 
 
 
 
 
 (46) (192) (2610) 
 
 Aug. 6 
 
 
 
 
 
 
 (61) 
 
 (445) (1020) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 224-800 
 
 
 0-960 
 
 291-3 
 
 
 
 > 678 
 
 
 
 
 
 
 
 
 
 
 
 
 0-926 
 
 241-4 
 
 
 
 3o2 
 
 2 19-006 
 
 
 o-g48 
 
 246-7 
 
 
 
 
 
 386 
 
 Aug. 14* 
 
 
 
 
 
 
 (980) 
 
 
 
 0-920 
 
 293-8 
 
 
 
 
 i 448 
 
 
 
 
 
 
 
 
 
 540 
 
 0-495 
 
 214-5 
 
 185-z 
 
 -17-9 
 
 i5 
 
 85 
 
 
 225-991 
 
 
 0-878 
 
 238-0 
 
 
 
 85 1 
 
 
 540 
 
 0-490 
 
 207-1 
 
 181-8 
 
 ig-6 
 
 o 
 
 10 
 
 
 
 o'gog 
 
 69-7 
 
 
 IV, 
 
 
 538 
 
 0-237 
 
 288-9 
 
 i8i-3 
 
 + 10-6 
 
 i 
 
 9 
 
 
 
 
 '949 
 
 ill-o 
 
 
 255 
 
 
 538 
 
 0-237 
 
 298-4 
 
 1 8o-5 
 
 + 12-7 
 
 4 5 
 
 211 
 
 
 Aug. i5 
 
 
 
 
 
 
 02 9 5) 
 
 * Imlian photo. The An as of Spots and Faculie are expressed in Millionths of the Son's visible Hemisphere. 
 
.REDUCTION OF SOLAR PHOTOGRAPHS THROUGHOUT 1878-1881. 
 
 MEASUKES OF POSITIONS and AREAS of SPOTS and FACUL^E upon the SUN'S DISK on PHOTOGRAPHS taken in the YEAR 1881 continued. 
 
 
 
 Dis- 
 tance 
 
 
 HELIOGKAPJHC 
 
 SPOTS. 
 
 FACUL/E. 
 
 
 
 Dis. 
 
 tance 
 
 
 HKI.IOQIIAI'HIC 
 
 SPOTS. 
 
 f \CVLX. 
 
 Mean 
 Solar 
 Time. 
 
 No. of 
 Group, 
 and 
 Letter 
 for 
 Spot. 
 
 from 
 Centre 
 in 
 terms 
 of 
 Sun's 
 Radius 
 
 Position 
 Angle 
 from 
 Sun's 
 Axis. 
 
 
 
 
 Mean 
 Solar 
 Time. 
 
 No. of 
 Group 
 and 
 Letter 
 for 
 Spot. 
 
 from 
 Centre 
 in 
 terms 
 of 
 Sun's 
 Radius 
 
 Position 
 Angle 
 from 
 Sun's 
 Axis. 
 
 
 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBRA 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 WHOLE 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 earh 
 Group 
 (and for 
 Day). 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBRA 
 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 WHOLE 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 | 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 1881. 
 
 
 
 o 
 
 o 
 
 o 
 
 
 
 1881. 
 
 
 
 o 
 
 o 
 
 
 
 
 
 
 227 d 'o34 
 
 
 0-876 
 
 237-0 
 
 
 
 
 
 532 
 
 234 d '8gg 
 
 
 0-948 
 
 284-0 
 
 
 
 
 
 253 
 
 
 
 0-753 
 
 288-3 
 
 
 
 
 
 i3g 
 
 
 
 0-820 
 
 242-3 
 
 
 
 
 
 323 
 
 
 
 0-894 
 
 1 1 1-8 
 
 
 
 
 
 255 
 
 
 
 0*804 
 
 291-7 
 
 
 
 
 
 IS? 
 
 Aug. 16 
 
 
 
 
 
 
 
 
 (940 
 
 
 549 
 
 0-469 
 
 42-0 
 
 298-2 
 
 + 2 7 -0 
 
 
 
 10 
 
 
 
 
 
 
 
 
 
 
 
 
 5 49 
 
 0-491 
 
 47'z 
 
 29.5-3 
 
 + 25-g 
 
 IO 
 
 42 
 
 
 227^23 
 
 
 0-920 
 
 235-5 
 
 
 
 
 
 9 2 9 
 
 
 549 
 
 0-527 
 
 44'4 
 
 294-1 
 
 + 28-5 
 
 47 
 
 260 
 
 
 
 
 o-8o5 
 
 2877 
 
 
 
 
 
 35 1 
 
 
 549 
 
 O-534 
 
 36-7 
 
 296-8 
 
 + 3l-8 
 
 4 
 
 i5 
 
 
 
 5 47 
 
 0-235 
 
 41-9 
 
 41-6 
 
 + 16-8 
 
 9 
 
 26 
 
 
 
 55o 
 
 0-703 
 
 77-8 
 
 274-0 
 
 + I3-6 
 
 >7 
 
 89 
 
 
 
 647 
 
 0-275 
 
 5o-5 
 
 38-2 
 
 + 167 5 
 
 10 
 
 
 
 55o 
 
 0-739 
 
 78-6 
 
 270-9 
 
 + I3-2 
 
 i3 
 
 65 
 
 
 
 
 0-835 
 
 123-5 
 
 
 
 
 
 263 
 
 
 552 
 
 0-783 
 
 75-2 
 
 267-0 
 
 + 16-0 
 
 3 
 
 36 
 
 
 
 
 0-878 
 
 109-7 
 
 
 
 
 
 182 
 
 
 552 
 
 0-797 
 
 77-0 
 
 265-6 
 
 + H7 
 
 22 
 
 104 
 
 
 
 
 0-979 
 
 68-0 
 
 
 
 
 
 267 
 
 
 553 
 
 0-825 
 
 70-2 
 
 263-a 
 
 + 20-3 
 
 60 
 
 299 
 
 
 Aug. 17 
 
 
 
 
 
 
 (H) 
 
 (36) 
 
 ('992) 
 
 
 554 
 
 0-882 
 
 70-5 
 
 256-5 
 
 + 20-5 
 
 6 
 
 3i 
 
 
 
 
 
 
 
 
 
 
 
 
 554 
 
 o'qoS 
 
 70-7 
 
 253-3 
 
 + 20-5 
 
 
 
 10 
 
 
 228784 
 
 547 
 
 0-169 
 
 347-5 
 
 41-8 
 
 + i6-3 
 
 
 
 33 
 
 
 
 
 0-817 
 
 7 3- 7 
 
 
 
 
 
 977 
 
 
 5 4 7 
 
 0-170 
 
 6-2 
 
 38-5 
 
 + 16-6 
 
 o 
 
 4 5 
 
 
 
 
 o-g52 
 
 109-7 
 
 
 
 
 
 635 
 
 Aug. 18* 
 
 
 
 
 
 
 (o) 
 
 (78) 
 
 
 Aug. 24 
 
 
 
 
 
 
 (182) 
 
 (961) 
 
 ( 2 3 4 5) 
 
 
 
 
 
 
 
 
 
 
 235771 
 
 
 o-go3 
 
 244-7 
 
 
 
 
 
 3oo 
 
 229-816 
 
 
 0-966 
 
 286-2 
 
 
 
 
 
 562 
 
 i 3n 
 
 
 5540 
 5 49 
 
 0-271 
 0-373 
 
 187-6 
 
 277 
 
 309-4 
 296-2 
 
 O.t 
 
 ~ O J 
 
 + 26-2 
 
 
 12 
 
 24 
 53 
 
 
 Aug. 19* 
 
 547 
 
 0-724 
 0-705 
 0-282 
 o-g56 
 
 2 70"^ 
 204-1 
 
 3 1 0-8 
 65-2 
 
 38- 9 
 
 + 17-3 
 
 2 
 (2) 
 
 3 4 
 (3 4 ) 
 
 I OU 
 
 23l 
 
 386 
 (i3og) 
 
 
 549 
 
 549 
 549 
 55o 
 55o 
 
 o-38i 
 0-424 
 0-440 
 o'53g 
 0-554 
 
 32-0 
 
 28-8 
 
 33-2 
 75-8 
 77'4 
 
 2 94'4 
 293-9 
 291-0 
 274-9 
 273-8 
 
 + 25-7 
 + 28-6 
 + 28-4 
 + I3-6 
 + i2-g 
 
 4 
 
 32 
 
 9 
 
 IO 
 2 
 
 II 
 
 206 
 
 43 
 58 
 
 '9 
 
 
 
 
 
 
 
 
 
 
 
 
 55o 
 
 o-58o 
 
 78-0 
 
 27i-g 
 
 + 127 
 
 6 
 
 26 
 
 
 231-040 
 Aug. 20 
 
 5 47 
 5 4 8 
 549 
 
 0-9 1 5 
 0-507 
 0-925 
 o'g5 8 
 
 23r8 
 
 293-2 
 io8-3 
 62-1 
 
 38-g 
 3o5-2 
 2g5'3 
 
 + 17-6 
 14-0 
 
 + 287 
 
 5 
 o 
 5i 
 (56) 
 
 9 
 ii 
 
 194 
 (224) 
 
 2 99 
 
 1081 
 929*7? 
 (23og) 
 
 
 55o 
 552 
 552 
 553 
 554 
 554 
 
 0-611 
 0-641 
 0-666 
 o~6g2 
 0-756 
 0-765 
 
 76-6 
 
 747 
 75-7 
 
 67-1 
 66-3 
 69-3 
 
 2697 
 267-6 
 265-6 
 264-5 
 zSg-o 
 257-7 
 
 + 13-8 
 
 + I5-2 
 
 + 14-8 
 
 + 20-8 
 + 22'5 
 + 20-4 
 
 
 2 
 
 33 
 
 4 5 
 o 
 
 
 
 37 
 42 
 i5g 
 
 2 9 2 
 25 
 
 22 
 
 
 
 
 
 
 
 
 
 
 
 
 
 o-8gg 
 
 114-0 
 
 
 
 
 
 698 
 
 232-891 
 
 
 0-868 
 
 286-3 
 
 
 
 
 
 3o3 
 
 Aug. 25* 
 
 
 
 
 
 
 (i 55) 
 
 (ioz5) 
 
 (998) 
 
 
 5 49 
 
 0-756 
 
 60-6 
 
 298-1 
 
 + 26-6 
 
 H 
 
 44 
 
 
 236-876 
 
 
 0-926 
 
 25i-5 
 
 
 
 
 
 1 85 
 
 
 549 
 
 0-776 
 
 60-0 
 
 296-3 
 
 + 27-5 
 
 3 
 
 32 
 
 
 
 555 
 
 0-287 
 
 3o3-o 
 
 307-1 
 
 + i5- 9 
 
 4 
 
 12 
 
 
 
 549 
 
 0-795 
 
 5g'o 
 
 2 94 -6 
 
 + 28-7 
 
 3o 
 
 i3i 
 
 3go c 
 
 
 549 
 
 0-352 
 
 348-5 
 
 297-2 
 
 + 27-2 
 
 18 
 
 46 
 
 
 
 55o 
 
 0-948 
 
 77'7 
 
 273-0 
 
 + i3-g 
 
 44 
 
 215 
 
 422 c 
 
 
 549 
 
 0-325 
 
 355-O 
 
 294'5 
 
 + 25-g 
 
 6 
 
 6 
 
 
 
 
 
 0-772 
 
 187 
 
 
 
 
 
 482 
 
 
 5 49 
 
 0-372 
 
 358'4 
 
 2 9 3-3 
 
 + 28-g 
 
 25 
 
 '94 
 
 
 Aug. 22 
 
 
 
 
 
 
 (90 
 
 (422) 
 
 (>5g7) 
 
 
 5 49 
 
 0-384 
 
 5-7 
 
 290-2 
 
 + 29-5 
 
 o 
 
 12 
 
 
 
 
 
 
 
 
 
 
 
 
 556 
 
 0-374 
 
 40-1 
 
 277-5 
 
 + 23-4 
 
 
 
 i5 
 
 
 
 
 
 
 
 
 
 
 
 
 556 
 
 0-419 
 
 42-4 
 
 274-6 
 
 + 247 
 
 9 
 
 12 
 
 
 233-902 
 
 
 0-902 
 
 284-7 
 
 
 
 
 
 464 
 
 
 55o 
 
 o-33i 
 
 69'7 
 
 274-2 
 
 + 13-3 
 
 12 
 
 53 
 
 
 
 5 49 
 
 0-612 
 
 04-5 
 
 298-2 
 
 + 267 
 
 2 
 
 22 
 
 
 
 55o 
 
 0-355 
 
 7 3-4 
 
 272-4 
 
 f 12'5 
 
 8 
 
 34 
 
 
 
 5 49 
 
 0-66 1 
 
 53-g 
 
 294-7 
 
 + 28-6 
 
 22 
 
 io5 
 
 
 
 55o 
 
 0-376 
 
 7 2-3 
 
 271-2 
 
 + 13-2 
 
 3 
 
 7 
 
 
 
 5 49 
 
 o-665 
 
 56-i 
 
 293-7 
 
 + 27-3 
 
 7 
 
 53 
 
 
 
 55o 
 
 0-401 
 
 727 
 
 26g'6 
 
 + 13-5 
 
 o 
 
 5 
 
 
 
 55o 
 
 0-847 
 
 78-4 
 
 273-6 
 
 + i3-6 
 
 23 
 
 ii3 
 
 
 
 55o 
 
 0-417 
 
 72-1 
 
 268-7 
 
 + i3-g 
 
 
 
 9 
 
 
 
 55o 
 
 0-880 
 
 787 
 
 269-7 
 
 + I3-3 
 
 1 1 
 
 21 
 
 
 
 552 
 
 0-447 
 
 6g-3 
 
 267-1 
 
 + I5-5 
 
 3 
 
 28 
 
 
 
 55 1 
 
 0-899 
 
 73-3 
 
 267-3 
 
 -l-iS-o 
 
 o 
 
 6 
 
 
 
 552 
 
 0-480 
 
 72-5 
 
 264-6 
 
 + 14-6 
 
 27 
 
 112 
 
 
 
 552 
 
 o-go3 
 
 70-4 
 
 266-7 
 
 + 16-2 
 
 9 
 
 53 
 
 
 
 553 
 
 o-5 1 6 
 
 61-6 
 
 263-8 
 
 + 20-4 
 
 89 
 
 328 
 
 
 
 552 
 
 0-909 
 
 77-1 
 
 265-9 
 
 + H'6 
 
 17 
 
 58 
 
 
 
 553 
 
 0-553 
 
 62-6 
 
 261-1 
 
 + 20-8 
 
 24 
 
 96 
 
 
 
 553 
 
 o-g32 
 
 71-6 
 
 262-3 
 
 + 197 
 
 73 
 
 277 
 
 
 
 55 4 
 
 0-618 
 
 65-o 
 
 256-o 
 
 l-20'g 
 
 18 
 
 5 7 
 
 
 
 55 4 
 
 o-g5g 
 
 7'-' 
 
 207-3 
 
 + 20-0 
 
 
 
 64 
 
 7 9 3 c 
 
 
 557 
 
 o-ggS 
 
 108-4 
 
 21 I'3 
 
 -17-4 
 
 25 
 
 98 
 
 
 
 
 o-goo 
 
 123-5 
 
 
 
 
 
 204 
 
 
 
 0-776 
 
 119-8 
 
 
 
 
 
 792 
 
 
 
 0-988 
 
 107-0 
 
 
 
 
 
 336 
 
 
 
 0-875 
 
 66-0 
 
 
 
 
 
 688 
 
 Aug. z3 
 
 
 
 
 
 
 (64) 
 
 (772) 
 
 (1797) 
 
 Aug. 26 
 
 
 
 
 
 
 (265) 
 
 (1124) 
 
 1660) 
 
 * Indian photo. The Areas of Spots and Faculsc are expressed in Millionths of the Sun's visible Hemisphere. 
 
REDUCTION OF SOLAR PHOTOGRAPHS THROUGHOUT 1878-1881. 
 
 6 
 
 MBASURKS CF POSITIONS and AHEAS of SPOTS and FACVL^E upon the SUN'S DISK on PHOTOGRAPHS taken in the YEAH 1881 continued. 
 
 Dis- 
 
 
 HKLIOOKAFHIC 
 
 SPOTS. 
 
 FACULJS. 
 
 
 Dis- 
 
 
 HKI tiir.itAPHic 1 SroTs. 
 
 FACUL.K. 
 
 ,, , tance 
 
 M~ ~*j<5S. 
 
 r ?- 
 
 Time. tor of 
 
 S '""- Sun's 
 
 Position 
 
 Angle 
 from 
 
 Sun's 
 Axis. 
 
 
 
 
 Meun 
 Solar 
 Time. 
 
 No. of 
 jroup, 
 and 
 Letter 
 for 
 Spot. 
 
 tance 
 from 
 
 in 
 
 terms 
 of 
 Sun's 
 
 Position 
 
 Anf-lr 
 
 t'niin 
 Sun's 
 Axis. 
 
 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBRA 
 
 tor i-aeh 
 Spot 
 (and for 
 
 Area of 
 WHOLE 
 for each 
 Spot 
 (and for 
 
 Area for 
 each 
 Group 
 (and for 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 
 TMliKA 
 for each 
 Spot 
 (and for 
 
 Area of 
 \VllnLK 
 for each 
 Spot 
 (and for 
 
 Area for 
 each 
 Group 
 (and for 
 
 Radius. 
 
 
 
 
 Day). 
 
 Day). 
 
 Day). 
 
 
 
 Radius. 
 
 
 
 
 Day). 
 
 Day). 
 
 ay . 
 
 1881. 
 
 
 
 
 
 
 
 
 1881. 
 
 
 
 
 o 
 
 o 
 
 
 
 
 207''- 890 '97 
 
 232-8 
 
 
 
 
 
 167 
 
 23 9 d -8i2 
 
 55o 
 
 0-309 288-5 
 
 271-3 4-12-5 
 
 15 
 
 7 
 
 
 0-753 ; 
 
 tqrS 
 
 
 
 48 
 
 
 552 
 
 0-298 299-8 
 
 269-4 4- 15-4 
 
 7 
 
 24 
 
 
 549 0-443 
 
 320-0 
 
 297-8 4-26-5 
 
 12 
 
 29 
 
 
 
 552 
 
 0-268 3o3'4 
 
 267-3 4- 1 5-5 
 
 '9 
 
 72 
 
 
 049 0-426 
 
 33ri 
 
 292-8 4-28-8 
 
 36 
 
 '97 
 
 
 
 552 
 
 0-255 295-8 
 
 267-5 -f-13'4 
 
 59 
 
 2OI 
 
 
 549 0-418 
 
 336-7 
 
 290-2 j 4-29"5 
 
 
 
 26 
 
 
 
 552 
 
 0-218 3o8-o 
 
 264-1 4-14-8 
 
 18 
 
 82 
 
 
 556 0-2-2 
 
 3-3 
 
 278-3 4-22-8 
 
 20 
 
 7' 
 
 
 
 552 
 
 0-171 332-8 
 
 258-5 4-i5-g 
 
 o 
 
 i3 
 
 
 556 o'2q5 
 
 4'4 
 
 277*9 + 2 4" z 
 
 10 
 
 26 
 
 
 
 553 
 
 0-287 323-2 
 
 264-4 4-20-3 
 
 36 
 
 262 
 
 
 006 0*299 
 
 9-1 
 
 276-3 +24-3 
 
 8 
 
 20 
 
 
 
 553 
 
 0-275 33o-3 
 
 262-3 4-20-9 
 
 7 
 
 47 
 
 
 556 0-284 
 
 10-7 
 
 274-5 '4-22'g 
 
 7 
 
 13 
 
 
 
 553 
 
 0-229 355'3 
 
 255-0 4-20-4 
 
 o 
 
 58 
 
 
 556 0-326 
 
 13-5 
 
 274-5 -f-25'5 
 
 37 
 
 1 63 
 
 
 
 55 9 
 
 0-428 186-4 
 
 256-8 17*9 
 
 
 
 '4 
 
 
 ooo 0-107 ' 
 
 35-9 
 
 274-6 4- 13'5 
 
 9 
 
 40 
 
 
 
 559 
 
 0-428 179-9 
 
 253*8 -i 8-1 
 
 2 
 
 18 
 
 
 55o o-i38 
 
 4 5-6 
 
 273-5 -f- 12'6 
 
 
 
 8 
 
 
 
 557 
 
 0-738 122-0 
 
 2i3'o 17-6 
 
 2 
 
 48 
 
 
 55o 0-184 
 
 52-7 
 
 270-7 4- 1 3-5 
 
 i5 
 
 7 
 
 
 
 56 1 
 
 0-989 117-3 
 
 177-2 25-5 
 
 o l3g 
 
 I442C 
 
 55o 0-221 
 
 62-1 
 
 267-8 4-12-9 
 
 5 
 
 i5 
 
 
 
 
 0-903 79-4 
 
 
 
 
 412 
 
 552 0-204 
 
 57-0 
 
 266-6 4- 14-9 
 
 '4 
 
 11 1 
 
 
 Aug. 29* 
 
 
 
 
 
 (246) (1448) 
 
 (2974) 
 
 552 O'2Q2 
 
 53-5 
 
 265-1 +16-9 
 
 4 
 
 6 
 
 
 
 
 
 
 
 
 
 5o2 0-272 
 
 66-1 
 
 264-0 4- 1 3-2 
 
 5 . 
 
 36 
 
 
 241*025 
 
 
 0-902 246-0 
 
 
 
 476 
 
 552 0-283 
 
 61*0 
 
 264-5 4-14-8 
 
 22 
 
 79 
 
 
 
 549 
 
 0-8 1 8 299-9 
 
 291-4 
 
 4-28-4 
 
 25 157 
 
 
 553 0-344 
 
 4 6-i 
 
 264-0 4-20-7 
 
 8l 
 
 35o 
 
 
 
 556 0-686 294-3 
 
 280*0 
 
 + 217 
 
 24 
 
 146 
 
 
 553 o-38o 
 
 49'4 
 
 26r3 4-2I"! 
 
 16 
 
 69 
 
 
 
 556 
 
 0-671 ; 299-8 
 
 2777 
 
 4-25-0 
 
 7 
 
 28 
 
 
 554 0-408 
 
 56-6 
 
 255-2 
 
 + 21-1 
 
 9 
 
 4 3 
 
 
 
 556 
 
 O-654 
 
 295-5 
 
 277-2 
 
 4-2i-g 
 
 o 
 
 6 
 
 
 557 0-942 
 
 III-2 
 
 2127 -17-1 
 
 39 
 
 9' 
 
 i52 c 
 
 
 556 
 
 o-63i 
 
 3o3-8 
 
 273-6 
 
 4-26-4 
 
 12 
 
 74 
 
 
 0-796 
 
 64-3 
 
 
 
 126 
 
 
 55o 
 
 o-55 1 
 
 282-0 
 
 271-3 
 
 4-126 
 
 5 
 
 46 
 
 
 0-921 
 
 7 I-3 
 
 
 
 
 
 4 6g 
 
 
 552 
 
 0-489 
 
 286-5 
 
 266-7 
 
 4-I4-3 
 
 78 
 
 5g3 
 
 Aug. 27 
 
 
 
 
 (349) 
 
 (1464) 
 
 (962) 
 
 
 553 
 
 0-472 
 
 3oo-3 
 
 263-5 
 
 4-20-3 
 
 69 388 
 
 
 
 
 
 
 
 
 
 558 
 
 o - 3g5 
 
 294-6 
 
 25g-7 
 
 + 16-1 
 
 23 
 
 116 
 
 
 238-8gg o'83g 
 
 294-8 
 
 
 
 
 
 558 
 
 
 55q 
 
 o-5o2 
 
 212-9 
 
 254-5 
 
 -7'9 
 
 4 
 
 16 
 
 
 0-700 
 
 
 
 
 
 429 
 
 
 557 
 
 0-579 
 
 i35 - 6 
 
 212-8 
 
 -17-9 5 
 
 20 
 
 
 549 0-584 
 
 304'9 
 
 297'9 
 
 4-25-6 
 
 o 
 
 3 
 
 
 
 56o 
 
 0-870 
 
 7 8-5 
 
 176-9 
 
 4-13-5 g 5o 
 
 3io/> 
 
 549 0-045 
 
 3l4'0 
 
 2 9 2*4 
 
 4-28-6 
 
 33 
 
 176 
 
 
 
 56 1 
 
 0-928 
 
 120-9 176-3 
 
 2 5' 2 io5 i)5 1 i3ioc 
 
 556 o"338 
 
 322-5 
 
 278*7 
 
 4-22-5 
 
 9 67 
 
 
 
 
 0-900 
 
 68-2 
 
 
 269 
 
 556 0-326 
 
 33i-2 275-8 4 23-6 
 
 o i3 
 
 
 Aug. 3o 
 
 
 
 
 
 (366) (2091) 
 
 (35o3) 
 
 556 0-357 
 
 33 9 -7 
 
 273-9 
 
 4-26-6 
 
 21 
 
 42 
 
 
 
 
 
 
 
 
 
 556 o'3 12 
 
 336-g 
 
 273-6 
 
 4-23-7 
 
 I I 
 
 20 
 
 
 
 
 
 
 
 
 556 0-328 
 
 340-1 
 
 273*0 
 
 4-25-O 
 
 i3 
 
 73 
 
 
 242-907 
 
 549 
 
 0-970 
 
 297-7 290-6 
 
 4-28-6 3g 144 5640 
 
 55o 0*177 
 
 3o5-i 
 
 274-4 
 
 4- 12-9 
 
 2 
 
 20 
 
 
 
 556 
 
 0-902 
 
 292-0 278-0 4-22-9 10 53 554C 
 
 55o 0-140 
 
 3184 
 
 271-4 
 
 4- 1 3* i 
 
 24 
 
 14! 
 
 
 
 552 
 
 0'802 
 
 283-2 266-7 
 
 4-14-8 65 520 logoc 
 
 552 0- 1 ."i 2 
 
 334-9 
 
 269-7 
 
 4-i5*o 
 
 4 
 
 4 
 
 
 
 553 
 
 0771 
 
 290-2 263-2 
 
 4-20 i 88 3b4 
 
 552 0-182 
 
 336-g 
 
 270-2 
 
 4-16-8 
 
 10 
 
 26 
 
 
 
 55 9 
 
 0-741 
 
 236-2 203-4 
 
 18-9 17 73 32o/> 
 
 55-z 0-107 
 
 344-6 267-6 
 
 4- i3-i 
 
 9 
 
 63 
 
 
 
 56i 0705 
 
 i36-g i83-i 24-8 106 507 
 
 552 o'liS 
 
 ro 265-8 
 
 4-13-9 
 
 49 3i3 
 
 
 
 56 1 0-768 
 
 i33'o 174-0 20-9 3o 168 36gc 
 
 553 0-2.33 
 
 6'5 264-3 
 
 4-2Q-5 
 
 81 
 
 3oo 
 
 
 
 56o 0-594 
 
 77-3 176-6 4-i3'4 5 24 
 
 553 o-2."j2 
 
 1 5-g 
 
 261-7 
 
 4-2I-I 
 
 i5 
 
 70 
 
 
 
 562 0-783 
 
 123-2 168-9! 202 22 '97/ 
 
 553 o-3o5 
 
 36-i 254-9 
 
 + 2I-2 
 
 o 
 
 6 
 
 
 
 0-739 
 
 68-5 
 
 9' 
 
 557 0-846 
 
 115-4 2i3-i 
 
 -17-0 
 
 20 
 
 g5 
 
 375 C 
 
 
 
 0-942 
 
 118-7 
 
 167 
 
 0-880 
 
 71-8 
 
 
 
 
 
 522 
 
 Sept. i 
 
 
 
 
 
 (36o) (1870) (3352) 
 
 Aug. 28 
 
 
 
 (3oi) (1442) 
 
 (1884) 
 
 
 
 
 
 
 
 23g-8i2 o-g23 
 
 2 9 3-3 
 
 
 
 
 5 4 6 
 
 244-549 
 
 0-898 
 
 247-1 
 
 
 739 
 
 0-907 
 
 2q6'7 
 
 
 
 574 
 
 
 552 0-963 
 
 284-6 
 
 266-7 
 
 4-i5-g o 
 
 258 
 
 l/o5n/ 
 
 049 o"666 
 
 3o5-6 291-8 4-28-4 
 
 26 i52 
 
 
 
 55-3 0-944 
 
 28y'6 
 
 263-2 
 
 4-20-9 6g 261 
 
 556 0-478 
 
 3o3'8 279-1 
 
 4-21-9 
 
 '7 79 
 
 
 
 56 1 o-58 1 
 
 1656 182-0 27-0 24 97 
 
 556 0-462 
 
 3o6-5 277-5 
 
 + 22'5 
 
 
 
 4 
 
 
 
 56 1 0-040 
 
 i63-8 i8rg 2.3-g 01 206 
 
 556 0-470 
 
 3cg-o 277-3 
 
 4-23-8 
 
 o 
 
 6 
 
 
 
 56 1 c-565 
 
 162-8 180-7 
 
 -20-4 14 83 
 
 556 0-449 
 
 3ig-8 272-8 +268 
 
 5 
 
 27 
 
 
 
 56 1 o'6o,3 
 
 107-2 
 
 176-2 26-7 o 84 
 
 556 0-424 
 
 3 1 6-5 272-6 4-24-7 
 
 16 72 
 
 
 
 56 1 0-619 
 
 i5o'3 171-5 25-6 o 27 
 
 55o 0-326 
 
 2 9 7*g 271-2 
 
 4- 1 5'7 
 
 17 
 
 60 
 
 
 Sept. 3' 
 
 
 
 (i58) (1016) (2 494 ) 
 
 1 
 
 
 
 
 
 
 
 
 Indian photo. 
 
 The Areas of Spots and Facnlse are expressed in Millionth* of the Sun's visible Hemisphere. t Melbourne photo. 
 
 a 64983. 
 
REDUCTION OF SOLAR PHOTOGRAPHS THROUGHOUT 1878-188 J. 
 
 MEASURES of POSITIONS and AREAS of SPOTS and YACVLX upon the SUN'S DISK on PHOTOGRAPHS taken in the YEAR 1881 continued. 
 
 
 
 Dis- 
 
 
 HKLIOGUAFHIC 
 
 SPOTS. 
 
 FACUL*. 
 
 
 
 Dis- 
 
 
 HKLIOGKAPIUC SPOTS. 
 
 FACIIL.E. 
 
 Mean 
 Solar 
 Time. 
 
 No. of 
 Group, 
 and 
 Letter 
 for 
 Spot. 
 
 tance 
 from 
 Centre 
 in 
 terms 
 of 
 Sun's 
 Radius. 
 
 Position 
 Angle 
 from 
 Sun's 
 Axis. 
 
 
 
 
 Mean 
 Solar 
 Time. 
 
 No. of 
 Group, 
 and 
 Letter 
 for 
 Spot. 
 
 tance 
 from 
 Centre 
 in 
 terms 
 of 
 Sun's 
 Radius. 
 
 Position 
 Angle 
 from 
 Sun's 
 Axis. 
 
 
 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBRA 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 WHOLE 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBRA 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 WIIOLK 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 1881. 
 
 
 
 c 
 
 
 
 o 
 
 
 
 
 1881. 
 
 
 
 
 
 o 
 
 o 
 
 
 
 
 246*- 1 55 
 
 
 0*966 
 
 289-5 
 
 
 
 
 
 3oo 
 
 49 d -738; 566 
 
 0-378 
 
 7O-O 
 
 101-4 
 
 + 14-1 
 
 o 
 
 18 
 
 
 
 56 1 
 
 o-55 7 
 
 igS-S 
 
 181-2 
 
 24-7 
 
 5l 
 
 307 
 
 
 
 566 
 
 o-3g3 
 
 74-2 
 
 lOO'I +12'8 
 
 '9 
 
 5l 
 
 
 
 56 1 
 
 0-587 
 
 196-2 
 
 1807 
 
 -27-0 
 
 3l 
 
 148 
 
 
 
 566 
 
 0-449 
 
 71-4 
 
 96-8 
 
 + I4-7 
 
 27 
 
 78 
 
 
 
 56 1 
 
 0-554 
 
 193-1 
 
 178-1 
 
 -25-3 
 
 o 
 
 25 
 
 
 
 567 
 
 0-601 
 
 7 3-6 
 
 86-2 
 
 + i5-6 
 
 o 
 
 "4 ' 
 
 
 
 56 1 
 
 0-546 
 
 185-5 
 
 173-4 
 
 25-5 
 
 '4 
 
 1 1 1 
 
 
 Sept. 8* 
 
 
 
 
 
 
 (145) 
 
 (568) 
 
 (3 9 56) 
 
 
 563 
 
 0-309 
 
 189-9 
 
 I73-2 
 
 -10-4 
 
 o 
 
 >7 
 
 
 
 
 
 
 
 
 
 
 
 
 
 0-888 
 
 127-0 
 
 
 
 
 
 155 
 
 
 
 
 
 
 
 
 
 
 
 
 0-961 
 
 75-5 
 
 
 
 
 
 302 
 
 250-769 
 
 
 0-910 
 
 253-7 
 
 
 
 
 
 427 
 
 Sept. 4 
 
 
 
 
 
 
 (96) 
 
 (608) 
 
 (757) 
 
 
 
 0-907 
 
 292-4 
 
 
 
 
 
 5 9 3 
 
 
 
 
 
 
 
 
 
 
 
 56 1 
 
 0-969 
 
 241-9 
 
 179-5, 24-9 
 
 65 
 
 "94 
 
 30780 
 
 
 
 
 
 
 
 
 
 
 
 566 i 0-149 
 
 46-5 
 
 102-9 '+ i3-o 
 
 28 
 
 255 
 
 
 246789 
 
 56 1 
 
 0-606 
 
 209-8 
 
 iSl'O 24-9 
 
 49 
 
 2 7 5 
 
 
 
 566 0-209 
 
 5q'i 
 
 98-6 +I3-3 
 
 
 
 63 
 
 
 
 56 1 
 
 0-626 
 
 207-7 
 
 180-7 
 
 -26-8 
 
 42 
 
 152 
 
 
 
 566 
 
 0*240 
 
 63-6 
 
 96-5 +i3-i 
 
 IO 
 
 27 
 
 
 
 56 1 
 
 o-5 9 5 
 
 203-8 
 
 177-1 
 
 -25-g 
 
 10 
 
 56 
 
 
 
 566 
 
 0-262 
 
 57-4 
 
 96-0 
 
 + i5-i 
 
 32 
 
 202 
 
 
 
 56 1 
 
 o-5g5 200-8 
 
 175-3 
 
 267 
 
 2 
 
 28 
 
 
 
 
 0-878 
 
 80-4 
 
 
 
 
 
 236 
 
 
 56 1 
 
 0-563 
 
 198-9 
 
 173-3 25-0 
 
 20 
 
 118 
 
 
 Sept. 9* 
 
 
 
 
 
 
 (35) 
 
 (740 
 
 ( 4 33 4 ) 
 
 
 563 
 
 0-385 
 
 219-6 
 
 176-1 ! I0'2 
 
 21 
 
 5i 
 
 
 
 
 
 
 
 
 
 
 
 
 563 
 
 o - 35 1 
 
 208-4 
 
 171-4 
 
 10-8 
 
 12 
 
 35 
 
 
 
 
 
 
 
 
 
 
 
 
 
 0-980 
 
 166-6 
 
 
 
 
 
 52O 
 
 25i-688 
 
 
 0-980 
 
 240-3 
 
 
 
 
 
 1760 
 
 
 
 o-g53 
 
 76-3 
 
 
 
 
 
 2006 
 
 
 
 0-971 
 
 256-6 
 
 
 
 
 
 468 
 
 Sept. 5* 
 
 
 
 
 
 
 (56) 
 
 ( 7 .5) 
 
 (2026) 
 
 
 0-961 
 
 292-2 
 
 
 
 
 
 764 
 
 
 
 
 
 
 
 
 
 
 
 566 
 
 o'i5i 
 
 3 18-5 
 
 102-9 
 
 + I3-7 
 
 66 
 
 271 
 
 
 
 
 
 
 
 
 
 
 
 
 566 
 
 0-122 
 
 327-1 
 
 100-9 
 
 + 13-0 
 
 2 
 
 33 
 
 
 247-936 
 
 
 0-933 
 
 248-7 
 
 
 
 
 
 128 
 
 
 566 
 
 0-106 
 
 336-7 
 
 99-5 
 
 + 12-8 
 
 5 
 
 18 
 
 
 
 56 4 
 
 o-g5o 
 
 289-8 
 
 219-6 
 
 4-21-1 
 
 i5 
 
 4 5 
 
 
 
 566 
 
 0-121 
 
 347-5 
 
 98-5 
 
 + 14-0 
 
 o 
 
 16 
 
 
 
 565 
 
 0-661 
 
 283-4 
 
 188-0 +14-3 
 
 1 1 
 
 25 
 
 
 
 566 
 
 D'102 
 
 io-6 
 
 gS-g 
 
 + i3-o 
 
 16 
 
 67 
 
 
 
 56 1 
 
 0-723 
 
 224-4 
 
 180-4 25-0 
 
 58 283 
 
 
 
 566 
 
 0-149 
 
 77 
 
 g5-8 
 
 + i5'7 
 
 35 
 
 148 
 
 
 
 56i 
 
 0-736 
 
 221-9 
 
 180-6 27-1 
 
 12 
 
 108 
 
 
 
 566 
 
 o-i35 
 
 12-6 
 
 9 5-3 
 
 + '47 
 
 
 
 48 
 
 
 
 56 1 
 
 0-672 
 
 218-0 
 
 173-8 25-5 
 
 16 
 
 126 
 
 7590 
 
 Sept. 10* 
 
 
 
 
 
 
 OH) 
 
 (601) 
 
 (2982) 
 
 
 563 
 
 0-574 2 4 r2 
 
 177-2 9-8 
 
 11 
 
 57 
 
 
 
 
 
 
 
 
 
 
 
 
 563 
 
 o-5 1 5 
 
 232-2 
 
 171-1 11-7 
 
 5 
 
 >9 
 
 
 
 
 
 
 
 
 
 
 
 
 566 
 
 0727 
 
 78-3 
 
 997 ! + i3-5 
 
 i3 
 
 40 
 
 382/ 
 
 202-666 
 
 
 o-g3 1 
 
 238-3 
 
 
 
 
 
 484 
 
 
 
 o8g3 
 
 I34-3 
 
 
 
 
 
 3i6 
 
 
 566 
 
 o-35o 
 
 289-2 
 
 104-0 
 
 + i3- 4 
 
 s 7 
 
 356 
 
 
 Sept. 6 
 
 
 
 
 
 
 (141) 
 
 (703) 
 
 (2355) 
 
 
 566 
 
 o-3o8 
 
 290-9 
 
 IOI"3 
 
 + 13-2 
 
 2 
 
 ii i 
 
 
 
 
 
 
 
 
 
 
 
 
 566 
 
 0-285 
 
 2947 
 
 99' 6 
 
 + 13-8 
 
 20 
 
 85 
 
 
 
 
 
 
 
 
 
 
 
 
 566 
 
 0-260 
 
 296-9 
 
 97'9 
 
 + i3'7 
 
 29 
 
 160 
 
 
 249-067 
 
 
 0-923 
 
 291-7 
 
 
 
 
 
 '74 
 
 
 566 
 
 0-266 
 
 3og-8 
 
 96-5 
 
 + 16-8 
 
 19 
 
 148 
 
 
 
 565 
 
 o - 85i 
 
 282-5 
 
 igo-5 
 
 + H'4 
 
 
 
 9 
 
 l62/ 
 
 
 56 9 
 
 0-835 
 
 73-5 
 
 27-2 
 
 + 77 
 
 12 
 
 32 
 
 
 
 56 1 
 
 0-833 
 
 236-6 
 
 180-4 
 
 22'5 
 
 o 
 
 9 
 
 
 
 5 7 o 
 
 0-865 
 
 71-2 
 
 23-9 
 
 + 19-8 
 
 10 
 
 48 
 
 
 
 56 1 
 
 0-840 
 
 233-9 
 
 1 80-0 
 
 *4 - 9 
 
 61 
 
 289 
 
 
 Sept.ll* 
 
 
 
 
 
 
 (H9) 
 
 (94) 
 
 (484) 
 
 
 56i 
 
 0-846 
 
 231-8 
 
 179-6 
 
 26-7 
 
 3i 
 
 97 
 
 
 
 
 
 
 
 
 
 
 
 
 56 1 
 
 0-794 
 
 23o-2 
 
 I73-9 
 
 -25-2 
 
 o 
 
 87 
 
 8840 
 
 
 
 
 
 
 
 
 
 
 
 563 
 
 o-ySS 
 
 25o-5 
 
 1777 
 
 - 9-5 
 
 10 
 
 25 
 
 
 253-787 
 
 566 
 
 o-566 
 
 282-8 
 
 io3-8 
 
 + l3'2 
 
 65 
 
 3o 4 
 
 
 
 566 
 
 o-5i3 
 
 76-7 
 
 101-0 
 
 + i3-o 
 
 49 
 
 141 
 
 
 
 566 
 
 0-566 
 
 285-9 
 
 io3'5 
 
 + >4'9 
 
 
 
 55 
 
 
 
 566 
 
 0-536 
 
 76-0 
 
 99-5 + I3-6 
 
 7 
 
 42 
 
 
 
 566 
 
 0-534 
 
 283-2 
 
 loro 
 
 + i3-i 
 
 o 
 
 38 
 
 
 
 566 
 
 o-56 1 
 
 73-5 
 
 97-9 +i5-2 
 
 i5 
 
 61 
 
 
 
 566 
 
 0-525 
 
 285-0 
 
 100-8 
 
 -f-H'o 
 
 19 
 
 67 
 
 
 
 567 
 
 0713 
 
 74'4 
 
 86-2 
 
 + 16-2 
 
 2 
 
 il 
 
 1840 
 
 
 566 
 
 0-504 
 
 285-1 
 
 99' 3 
 
 + 13-8 
 
 o 
 
 '9 
 
 
 Sept. 7 
 
 
 
 
 
 
 (1 7 5) 
 
 (778) 
 
 (1404) 
 
 
 566 
 
 0-487 
 
 282-6 
 
 98-4 
 
 + 12-4 
 
 
 
 i3 
 
 
 
 
 
 
 
 
 
 
 
 
 566 
 
 0-496 
 
 292-2 
 
 98-0 
 
 + I7'i 
 
 28 
 
 io3 
 
 
 
 
 
 
 
 
 
 
 
 
 566 
 
 0-476 
 
 285-6 
 
 97'4 
 
 + i3'7 
 
 
 
 61 
 
 
 249-738 
 
 
 0-957 
 
 25l'2 
 
 
 
 
 
 552 
 
 
 566 
 
 0-464 
 
 286-3 
 
 96-6 
 
 + i3- 9 
 
 9 
 
 35 
 
 
 T? / 
 
 
 0-957 
 
 243-2 
 
 
 
 
 
 938 
 
 
 566 
 
 0-454 
 
 285-3 
 
 96-0 
 
 + I3-3 
 
 2 
 
 16 
 
 
 
 
 0-919 
 
 282-8 
 
 
 
 
 
 53o 
 
 
 566 
 
 0-454 
 
 287-9 
 
 9 5-8 
 
 + 14-5 
 
 O 
 
 7 
 
 
 
 
 0-919 
 
 290-0 
 
 
 
 
 
 367 
 
 
 568 
 
 0-383 
 
 244-4 
 
 89-0 
 
 2-8 
 
 18 
 
 53 
 
 
 
 56 1 
 
 0-900 
 
 237-6 
 
 179-6 
 
 25-0 
 
 63 
 
 222 
 
 1 56g c 
 
 
 568 
 
 0-333 
 
 238-7 
 
 85-9 
 
 3-i 
 
 26 
 
 95 
 
 
 
 56 1 
 
 o-853 
 
 234-0 
 
 172-0 
 
 25-5 
 
 i5 
 
 62 
 
 
 
 56 9 
 
 0-669 
 
 72-6 
 
 27-71+17-0 
 
 4 
 
 24 
 
 
 
 566 
 
 0-370 
 
 7 3'2 
 
 101 6 
 
 + 12-9 
 
 21 
 
 123 
 
 
 
 570 
 
 0-733 
 
 70-9 
 
 22'5 
 
 + 18-9 
 
 12 
 
 36 
 
 
 * Indian photo. The Areas of Spots and Facule are expressed in Millionths of the Sun's visible Hemisphere. 
 
REDUCTION OF SOLAR PHOTOGRAPHS THROUGHOUT 1878-1881. 
 
 MEASURES of POSITIONS and AREAS of SPOTS nml FACTI..*: upon the SON'S DISK on PHOTOGRAPHS taken in the Year 1881 continued. 
 
 
 
 Dis- 
 
 
 Iln.IOOUAPHIC 
 
 SPOTS. 
 
 FACII. .1:. 
 
 
 
 Dis- 
 
 
 HKUOOKAPIIIC 
 
 SPOTS. 
 
 l-'\. i i..i.. 
 
 HMD 
 
 Solar 
 Time. 
 
 No. of 
 Group, 
 
 and 
 Letter 
 
 lor 
 Spot. 
 
 tance 
 from 
 
 Outre 
 in 
 terms 
 of 
 Sun's 
 
 Position 
 Angle 
 from 
 Sun's 
 Axis. 
 
 
 
 
 Mean 
 So'ar 
 Time. 
 
 No. of 
 Group, 
 and 
 Letter 
 for 
 Spot. 
 
 tance 
 from 
 Centre 
 in 
 terms 
 of 
 Son'l 
 
 I'o-ition 
 
 from 
 
 Sun's 
 
 
 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 
 TMIiKA 
 for each 
 Spot 
 (and for 
 
 Area of 
 Will II, K 
 
 tor e;u'li 
 Spot 
 
 (and for 
 
 Area for 
 each 
 Group 
 (and for 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 DMBBA 
 
 for each 
 S]>ot 
 (nnd for 
 
 Area of 
 WHOLE 
 for each 
 Spot 
 (and for 
 
 Area for 
 each 
 Group 
 
 (and for 
 
 t~4o w^ 
 
 
 
 Radius. 
 
 
 
 
 Day). 
 
 Day). 
 
 I >.i}). 
 
 
 
 Radius. 
 
 
 
 
 Hay). 
 
 Day). 
 
 Day). 
 
 1881 
 
 
 
 
 
 o 
 
 o 
 
 
 
 1881. 
 
 
 
 
 
 o 
 
 o 
 
 
 
 
 253 J 78 7 
 
 071 
 
 0-970 
 
 7 5- 7 
 
 352-3 
 
 + I5-6 
 
 
 
 i3i 
 
 
 258 d -g52 
 
 
 0781 
 
 277-0 
 
 
 
 
 Ill 
 
 
 571 0-976 
 
 74-0 
 
 35o-6 
 
 + 167 
 
 
 
 i3g 
 
 
 5 7 I 
 
 0-244 3g-2 35i'g 
 
 + 17-9 49 
 
 248 
 
 
 
 572 0-976 69-4 
 
 35o - 4 
 
 + 21-6 
 
 
 
 154 23460 
 
 
 5 7 2 
 
 0-365 38- 7 346-8 
 
 + 23-4 7 5 
 
 4 5 1 
 
 
 072 o-g85 71-4 
 
 3 47 -6 
 
 + 19-5 o 
 
 1 56 
 
 
 5 7 2 
 
 0-353 49-2 344-7 
 
 + 20- 1 
 
 3 
 
 9 
 
 
 Sept. 1 2* 
 
 
 
 
 
 (i 83) (i5o6) (2346) 
 
 
 573 
 
 0-334 5 7'3 
 
 344-1 
 
 + 17-2 
 
 
 
 5 
 
 
 
 
 
 
 
 
 
 0-892 uo-3 
 
 
 
 
 
 223 
 
 255-o83 
 
 566 0-770 280-9 
 
 io3-2 +i3-o 126 553 
 
 
 
 
 0-928 6r5 
 
 
 
 
 
 487 
 
 
 566 0-720 286-5 
 
 98-2+16-8 24 
 
 I2g 
 
 
 Sept. 17 
 
 
 
 
 
 
 0*7) 
 
 (7 '3) 
 
 (821) 
 
 
 566 0-703 282-5 
 
 97-0 + lo'g 20 
 
 9 5 
 
 5 44 c 
 
 
 
 
 
 
 
 
 
 
 
 568 0-657 256-3 
 
 gr8 3-4 22 
 
 io3 
 
 
 
 
 
 
 
 
 
 
 
 
 568 0-570 2 53'4 
 
 85-3 3-3 41 
 
 u3 
 
 
 25g738 
 
 5700 
 
 0-897 278-8 
 
 55-2 
 
 + 11-0 18 
 
 6g 
 
 649 c 
 
 
 56g 0-444 65'2 
 
 27-4 +17-2 5 
 
 13 
 
 
 
 5 7 i 
 
 o-i83 353-g 352-1 +17-6 3i 106 
 
 
 
 070 O-536 64-3 
 
 21-5+19-6 10 3o 
 
 
 
 071 
 
 0-175 358'4 35i-2 +17-2 i5 46 
 
 
 
 071 0-864 74'5 
 
 35rg + 17-0 76 
 
 224 
 
 
 
 5 7 2 
 
 0-291 i r6 347-3 +23-6 34 
 
 235 
 
 
 
 5-2 0-887 68-2 349-3 +22-6 86 
 
 238 
 
 
 
 5 7 2 
 
 o-23g 1 5'8 34o-g +2O-3 8 
 
 46 
 
 
 
 572 
 
 0-906 69-6 346-6 +21-5 
 
 69 
 
 235 
 
 
 
 5 7 2 
 
 o-25g 17-7 346-1 +21-4 8 
 
 33 
 
 
 
 573 
 
 o-g32 
 
 73-7 
 
 344-2 
 
 + 17'8 
 
 O 
 
 37 
 
 548 c 
 
 
 5 7 2 
 
 o-27g ! 18-8 
 
 346-3 +22-4 
 
 5o 
 
 
 
 
 0-806 
 
 127-8 
 
 
 
 
 
 
 5 7 2 
 
 o-3o5 18-7 
 
 344-8+23-8 5 
 
 64 
 
 
 Sept. 1 3 
 
 
 . 
 
 
 
 (479) ('77) 
 
 (i35 2 ) 
 
 
 5 7 2 
 
 O-252 
 
 26-4 
 
 344-1 
 
 + 20-1 
 
 i5 
 
 
 
 
 
 
 
 
 
 
 
 
 o- 94 6 
 
 6o'0 
 
 
 
 
 1230 
 
 255-g43 
 
 
 0-884 
 
 23O-2 
 
 
 
 
 283 
 
 
 
 '94 5 
 
 73-8 
 
 
 
 
 
 i537 
 
 
 566 
 
 0-882 
 
 280-0 
 
 io3'3 +12-2 
 
 83 
 
 494 
 
 
 Sept. 1 8* 
 
 
 
 
 
 
 (i3o) 
 
 (664) 
 
 (3 4 i6) 
 
 
 566 
 
 0-839 284-5 
 
 98-4 + 16-0 
 
 28 
 
 ii5 4g3 c 
 
 
 
 
 
 
 
 
 
 
 
 566 
 
 0-828 28r5 
 
 97-2 i + i3-5 
 
 9 
 
 46 
 
 260-722 
 
 
 o*g3i 
 
 28l-8 
 
 
 
 
 
 262 
 
 
 568 0-798 25g 6 
 
 g2-6 3-g 
 
 24 
 
 log 
 
 
 5 7 3a o-g 7 2 2 7 g - 3 
 
 55-o +10-7 
 
 27 
 
 134 
 
 538 c 
 
 
 568 0-720 258-2 85-6 3-4 
 
 25 
 
 107 255 c 
 
 
 5 7 i 0-304 3o8'i 
 
 352-3 +17-6 
 
 3o 
 
 i35 
 
 
 
 56g 0-289 oo-5 27-4 +17-6 
 
 
 
 2 
 
 
 
 5 7 i 0-287 
 
 309-4 
 
 352 2 + I 7 -3 
 
 i5 
 
 47 
 
 
 
 570 o-38i 53-o 21-9 +19-7 
 
 11 
 
 29 
 
 
 
 5 7 i 
 
 0-288 
 
 3i5-8 
 
 35o-o +18-8 
 
 o 
 
 i3 
 
 
 
 671 0-753 7 3-i 352-0+17-4 
 
 52 
 
 225 
 
 
 
 572 
 
 0-321 
 
 332-5 
 
 347-1 +23'5 
 
 39 
 
 255 
 
 
 
 572 0-795 66-g | 3487+227 
 
 69 
 
 277 
 
 
 
 5 7 2 
 
 0-280 
 
 327-3 
 
 347-1 +20-6 
 
 2 
 
 3o 
 
 
 
 572 0-816 68-0 346-4 +22-1 
 
 25 
 
 230 
 
 
 
 5 7 2 
 
 0-292 
 
 336-3 
 
 345-1 
 
 + 22-5 
 
 12 
 
 118 
 
 
 
 5 7 3 
 
 0-836 73-1 
 
 343-8 
 
 + 18-0 
 
 i3 
 
 27 
 
 987 c 
 
 
 574 o-g55 
 
 76-3 
 
 264-1 +i5-i 38 
 
 107 
 
 
 Sept. 14 
 
 
 
 
 
 
 (33g) 
 
 (1661) (2018) 
 
 
 075 o'97g 
 
 69-6 
 
 25 7 -8 +21-4 3g 
 
 217 
 
 
 
 
 
 
 
 
 
 
 
 0-866 
 
 72-1 
 
 
 
 
 
 383 
 
 207'o5g 
 
 566 
 
 0-972 
 
 280-6 1034 +12-0 
 
 97 
 
 45 1 
 
 
 
 0-866 74-0 
 
 
 
 
 
 4 9 5 
 
 
 566 
 566 
 
 0-948 284-5 98-6 +16-0 
 0-945 281-0 g7'g + i3-2 
 
 4 
 
 ' 
 
 17 
 
 11 
 
 } 463 nf 
 
 
 0-894 
 0-933 
 
 58-o 
 78-9 
 
 
 
 
 
 676 
 
 1012 
 
 
 568 o-g24 263-0 92-7 3-7 
 
 34 
 
 125 
 
 
 Sept. ig* 
 
 
 
 
 
 
 (202) 
 
 (io56) 
 
 (3366) 
 
 
 568 0-871 261-9 85- 7 3-4 
 
 26 
 
 63 
 
 267 c 
 
 
 
 
 
 
 
 
 
 
 5 7 o 0-226 17-3 22-1 +19-6 
 
 4 
 
 20 
 
 
 261-961 
 
 0-878 
 
 288-0 
 
 
 
 
 
 161 
 
 
 571 0-571 
 
 69-5 352-2 +17-5 
 
 56 
 
 239 
 
 
 
 571 
 
 o'52i 
 
 292-9 
 
 35i-6 
 
 + 17-8 
 
 4 3 
 
 167 
 
 
 
 572 o-65o 
 
 63-4 347^ +22'6 
 
 9 
 
 538 
 
 
 
 572 0-480 
 
 307-7 
 
 345-8 
 
 + 23-5 
 
 61 
 
 269 
 
 
 
 573 
 
 0*675 
 
 717 344-1 + '7'6 
 
 10 
 
 19 
 
 
 
 574 o-83g 
 
 76-6 
 
 264-0 
 
 + i5-o 
 
 '9 
 
 92 
 
 3i5 p 
 
 
 
 0-873 
 
 66-0 
 
 
 
 547 
 
 
 575 o-8gi 
 
 69-5 
 
 25 7 -g 
 
 + 21-5 
 
 5i 
 
 264 
 
 273 f 
 
 
 
 0-9 1 5 
 
 I 10-2 
 
 
 
 
 177 
 
 
 
 0-761 
 
 57-8 
 
 
 
 
 
 33 1 
 
 Sept. i5 
 
 
 
 
 
 
 (321) 
 
 (1483) 
 
 ( 2 o3 9 ) 
 
 
 
 0-892 
 
 1 1 6-5 
 
 
 
 
 
 267 
 
 
 
 
 
 
 
 
 
 
 Sept. 20 
 
 
 
 
 
 
 ('74) 
 
 (792) 
 
 (i3 4 7) 
 
 258-102 
 
 
 0-961 
 
 284-7 
 
 
 
 
 
 445 
 
 
 
 
 
 
 
 
 
 
 
 
 O'6oi 
 
 
 
 
 
 
 125 
 
 
 
 
 
 
 
 
 
 
 
 568 o-ggo 
 
 265-3 g3'4 - 3-6 
 
 
 
 87 
 
 333/ 
 
 262 d - 7 84 
 
 571 
 
 0-670 
 
 289-1 
 
 352-1 
 
 + 18-0 
 
 3o 
 
 1 60 
 
 
 
 571 0-382 
 
 60- 1 352-1 +177 
 
 57 
 
 234 
 
 
 
 671 
 
 0-648 
 
 288-4 
 
 35o'4 +I 7 '2 
 
 o 
 
 13 
 
 
 
 572 0-482 
 
 53-o ; 347-7 +23-3 
 
 53 
 
 294 
 
 
 
 5 7 2 
 
 0-6 1 3 
 
 2997 
 
 340-8 +23-3 
 
 36 
 
 231 
 
 
 
 572 0-492 
 
 57-4 346-0 +21-7 
 
 23 
 
 161 
 
 
 
 574 0721 
 
 76-5 
 
 264-3 +14-6 
 
 12 
 
 40 
 
 
 
 573 0-489 i 67-4 044-3 +17-1 
 
 4 
 
 i3 
 
 
 
 575 0-798 
 
 68-g 
 
 25 7 -8 +21-0 
 
 48 
 
 228 
 
 
 
 
 0-878 
 
 114-3 
 
 
 
 
 
 200 
 
 
 c-883 
 
 697 
 
 
 
 
 
 748 
 
 
 
 0-902 
 
 62-3 
 
 
 
 
 
 79 1 
 
 
 0-925 1 1 3-o 
 
 
 
 
 
 i ^76 
 
 Sept. 16 
 
 
 
 
 
 
 (37) 
 
 (78o) 
 
 ('944) 
 
 Sept. 2 1 * 
 
 
 
 
 
 
 (126) 
 
 (672) 
 
 (924) 
 
 Indian photo. The Areas of Spots and Faculse are expressed in Millionth* of the Sun's visible Hemisphere. 
 
 I 2 
 
68 
 
 REDUCTION OF SOLAR PHOTOGRAPHS THROUGHOUT 1878-1881. 
 
 MEASURES of POSITIONS and AREAS of SPOTS and FACUL^E upon the SUN'S DISK on PHOTOGRAPHS taken in the Year 1881 continued. 
 
 
 
 Dis- 
 
 
 HELIOGRAPHIC 
 
 SPOT*. 
 
 FACDL^E. 
 
 
 
 Dis- 
 
 
 HELIOGRAPHIC SPOTS. 
 
 V \cm-M. 
 
 MBOTI 
 Solar 
 Time. 
 
 No. of 
 Grroup, 
 and 
 Letter 
 for 
 Spot. 
 
 tance 
 from 
 Centre 
 iu 
 terms 
 of 
 Sun's 
 Radius. 
 
 'osition 
 Angle 
 from 
 Sun's 
 Axis. 
 
 
 
 
 Mean 
 
 Solar 
 Time. 
 
 No. of 
 jroup, 
 and 
 Letter 
 for 
 Spot. 
 
 tance 
 from 
 Centre 
 in 
 terms 
 of 
 Sun's 
 Ja'lius. 
 
 J osition 
 Angle 
 from 
 Sun's 
 Axis. 
 
 i 
 
 
 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 [JMBHA i 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 rVHOLE 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 Longi- 
 tude. 
 
 Lati- ' 
 tude. 
 
 Area of 
 JMBRA 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 VHOLE 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 1881. 
 
 
 
 o 
 
 o 
 
 o 
 
 
 
 
 1881. 
 
 
 
 
 
 
 
 
 
 
 
 j63 d 787 
 
 5 7 I 
 
 O'SlO 
 
 287-1 
 
 35i-6 
 
 + 18-0 
 
 27 
 
 9 5 
 
 2l8c 
 
 26g d> g6i 
 
 
 0-869 
 
 2q3-8 
 
 
 
 
 836 
 
 
 5 7 2 
 
 0-756 
 
 295-7 
 
 345-2 
 
 + 23-8 
 
 44 96 
 
 
 
 
 0'8o3 
 
 238-8 
 
 
 
 133 
 
 
 5 7 2 
 
 0-7.31 
 
 2q3-l 
 
 343-4 
 
 + 21-5 
 
 o i3 
 
 352 c 
 
 
 574 
 
 0-729 
 
 283-8 
 
 262-7 
 
 + 14-6 
 
 5 
 
 
 5750 
 
 o'32o 
 
 328-0 
 
 3o 7 -8 
 
 + 22'6 
 
 o 26 
 
 
 
 575 
 
 0-674 
 
 293-2 
 
 256'g 
 
 -f-20'5 54 
 
 255 
 
 
 574 
 
 0-557 
 
 74'9 
 
 263-8 
 
 + 14-1 
 
 10 35 
 
 
 578 
 
 0-337 
 
 221'2 
 
 228-7 
 
 - 8-1 4 
 
 7 
 
 
 575 
 
 0-654 
 
 66-2 
 
 2577 
 
 + 20-7 
 
 36 201 
 
 
 5 7 7 
 
 0794 
 
 128-9 
 
 173-0 
 
 25-0 8 
 
 10 5g5i/ 
 
 Sept. 2 2* 
 
 
 
 
 
 
 d'7) 
 
 (566) 
 
 (5 7 o) 
 
 576 
 
 0717 
 
 7^9 
 
 170-0 
 
 + 14-8 61 
 
 289 494/ 
 
 
 
 
 
 
 
 
 
 
 Sept. 28 
 
 
 
 
 
 (127) 
 
 (5 7 i) (2058) 
 
 264787 
 
 571 
 
 0-921 
 
 286-6 
 
 352-0 
 
 + 18-0 
 
 21 
 
 95 
 
 5770 
 
 270-ggg 
 
 
 o-gz3 
 
 292-2 
 
 
 
 869 
 
 
 572 
 
 0-872 
 
 2g3 5 
 
 344-8 
 
 + 23-8 
 
 49 
 
 196 
 
 58 7 c 
 
 
 
 o'8g5 
 
 243-8 
 
 
 
 228 
 
 
 574 
 
 0-372 
 
 68-1 
 
 263-3 
 
 + 14-5 
 
 9 
 
 3o 
 
 
 
 575 
 
 0-8 1 8 
 
 290-7 
 
 256-5 
 
 + 207 58 
 
 264 
 
 255^J 
 
 
 575 
 
 0-486 
 
 5g - o 
 
 2577 
 
 + 20-8 
 
 35 23g 
 
 
 
 578 
 
 0-527 
 
 243-0 
 
 23o-i 
 
 - 7 - 9 ' 
 
 9 
 
 
 Sept. 23* 
 
 
 
 
 
 
 (114) (56o) 
 
 Oi6 4 ) 
 
 
 579 
 
 0-41 5 
 
 196-8 
 
 209-1 
 
 -167' 6 
 
 27 
 
 
 
 
 
 
 
 
 
 
 
 
 58o 
 
 0-196 
 
 3 7 -I 
 
 195-0 
 
 + i5-6 o 
 
 i5 
 
 
 
 
 
 
 
 
 
 
 
 
 5 77 
 
 0-682 
 
 i3g-o 
 
 172-5 
 
 25-1 7 
 
 25 
 
 567 sj 
 
 265-923 
 
 
 '947 
 
 234-0 
 
 
 
 
 
 122 
 
 
 676 
 
 0-538 
 
 7 2-3 
 
 170-0 
 
 + i5-i 62 
 
 28g 
 
 
 
 
 0-826 
 
 295-3 
 
 
 
 
 
 J 74 
 
 
 
 o-g43 
 
 72-7 
 
 
 
 
 583 
 
 
 5 7 i 
 
 '99i 
 
 286-8 
 
 353-0 
 
 + i7'5 
 
 3o 
 
 9' 
 
 
 Sept. 2g 
 
 
 
 
 
 (!3 4 ) 
 
 (629) 
 
 (2502) 
 
 
 5 7 2 
 
 O'q66 
 
 292-4 
 
 345-6 
 
 + z3-3 
 
 32 
 
 205 
 
 525 c 
 
 
 
 
 
 
 j 
 
 
 
 
 574 
 
 0-164 
 
 34-6 
 
 2637 
 
 + 14-6 
 
 8 
 
 24 
 
 
 
 
 
 
 
 
 
 
 
 5y5 
 
 o-3o3 
 
 36-4 
 
 258-1 
 
 + 20-9 
 
 5o 
 
 242 
 
 
 272-044 
 
 
 o-g28 
 
 243-3 
 
 
 
 
 25o 
 
 
 ! 0-858 
 
 68-0 
 
 
 
 
 
 182 
 
 
 575 
 
 0-926 
 
 289-1 
 
 256-8 
 
 + 20-2 
 
 65 
 
 223 
 
 407 / 
 
 
 
 0-964 
 
 747 
 
 
 
 
 
 202 
 
 
 579 
 
 o'53g 
 
 225-1 
 
 211-7 
 
 l6'2 
 
 3 
 
 11 
 
 
 Sept. 24 
 
 
 
 
 
 
 (120) 
 
 (562) 
 
 (1205) 
 
 
 58o 
 
 0-173 
 
 336'4 192-5 
 
 + i5- 7 
 
 9 
 
 H 
 
 
 
 
 
 
 
 
 
 
 
 
 5 77 
 
 o-58o 
 
 154-4 
 
 172-3 
 
 25-0 
 
 3 
 
 8 
 
 
 
 
 
 
 
 
 
 
 
 
 5y6 
 
 0-338 
 
 64-5 
 
 170-1 
 
 + 14*6 
 
 67 
 
 227 
 
 
 266-952 
 
 
 0-989 
 
 2367 
 
 
 
 
 
 3o3 
 
 
 
 0-894 
 
 
 
 
 
 
 464 
 
 
 
 0-9 1 3 
 
 2g5'o 
 
 
 
 
 
 25o 
 
 
 
 0-923 
 
 
 
 
 
 
 ii3 
 
 
 
 0-853 
 
 2417 
 
 
 
 
 
 211 
 
 Sept. 3o 
 
 
 
 
 
 
 (H7) 
 
 (483) 
 
 (1284) 
 
 
 574 0-186 
 
 3 1 6-0 
 
 263-2 
 
 + H-5 
 
 6 
 
 H 
 
 
 
 
 
 
 
 
 
 
 
 
 675 0-243 
 
 352-1 
 
 257-6 
 
 + 207 
 
 35 
 
 25g 
 
 
 
 
 
 
 
 
 
 
 
 
 676 0-993 
 
 76-6 
 
 171-1 
 
 + i5-i 
 
 72 
 
 348 
 
 340P 
 
 272-896 
 
 
 o-g35 
 
 246-2 
 
 
 
 
 
 82 
 
 
 o-g35 
 
 1 1 3-3 
 
 
 
 
 
 269 
 
 | 
 
 0-808 
 
 253-7 
 
 
 
 
 
 9 2 
 
 Sept. 26 
 
 
 
 
 
 (ii3) 
 
 (621) 
 
 (I 3 7 3) 
 
 5 7 5 
 
 o-g75 
 
 289-6 
 
 255-6 
 
 + 20-6 
 
 37 
 
 213 
 
 304 nf 
 
 
 
 
 
 
 
 
 
 
 579 
 
 0-669 
 
 237-0 
 
 212-7 
 
 16-0 
 
 2 
 
 
 
 I 
 
 
 
 
 
 
 
 
 58o 
 
 o-33 7 
 
 299-8 
 
 194-8 l+iS-g 
 
 7 
 
 20 
 
 
 267-988 
 
 0-9 1 3 
 
 292-8 
 
 
 
 
 
 4 23 
 
 
 577 
 
 0-532 
 
 171-5 
 
 172-2 25-0 
 
 3 
 
 8 
 
 
 
 0-888 
 
 240-7 
 
 
 
 
 
 321 
 
 
 576 
 
 o-i85 
 
 41-7 
 
 169-9 +14-5 
 
 36 
 
 223 
 
 
 
 574 0-379 
 
 zgi-6 
 
 263-1 
 
 + H'4 
 
 10 
 
 16 
 
 
 
 58i 0-826 
 
 I2I-I 
 
 128-1 20-9 
 
 7 
 
 '9 
 
 122 C 
 
 
 675 o - 35o 
 
 3 1 3-6 
 
 257-5 
 
 + 20-5 
 
 33 
 
 218 
 
 
 
 582 0-963 
 
 79-3 
 
 102-0 
 
 + I2-I 
 
 9 
 
 34 
 
 6l2/> 
 
 
 577 o-g58 
 
 118-9 
 
 174-2 
 
 25'2 
 
 o 
 
 9 
 
 632 C 
 
 
 0-796 
 
 7 2-3 
 
 
 
 
 
 268 
 
 
 5 7 6 0-942 
 0-786 
 
 767 
 74-3 
 
 170-7 
 
 + H'8 
 
 65 
 
 312 
 
 5 7 8 nf 
 u5 
 
 Oct. i 
 
 0-975 
 
 ii3'3 
 
 
 
 (99) 
 
 (5 1 g) 
 
 194 
 ('674) 
 
 Sept. 26 
 
 
 
 
 
 (.08) 
 
 (555) 
 
 (2069) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 274-079 
 
 
 o-g33 
 
 2og'2 
 
 
 1 
 
 
 
 167 
 
 269-087 
 
 O'qi8 
 
 241-0 
 
 
 
 
 
 '94 
 
 
 0-838 
 
 240-2 
 
 
 
 
 l52 
 
 
 
 
 o-83g 
 
 3O2'O 
 
 
 
 
 
 474 
 
 
 583 o-853 
 
 288-8 : 220-2 +IQ-4 
 
 i5 
 
 57 
 
 267 c 
 
 
 0-772 
 
 287-8 
 
 
 
 
 383 
 
 
 58o 0-575 
 
 288-3; ig5-g + i5-8 
 
 5 
 
 24 
 
 
 
 574 ; 0-575 
 
 285-7 262-5 
 
 + 14-5 o 
 
 5 
 
 
 
 576 o-2o5 3i3'2 170-4 + 14-5 
 
 38 
 
 211 
 
 
 
 5 7 5 ; 0-524 
 
 2g8'6 267-0 
 
 + 20-4 42 
 
 236 
 
 
 
 58i 0-677 I2 9'5 I2 7'9 ~ 2 ' 
 
 i3 
 
 43 
 
 
 
 578 0-268 
 
 I 7 5'5 226-5 
 
 - 8-7 
 
 5 
 
 i3 
 
 
 582 o-856 80-0 102-3 +irg 
 
 4 
 
 16 
 
 4g2c 
 
 
 577 0-877 
 
 123-9 I 7 4'3 
 
 25-3 
 
 o 
 
 1 6 74 3/ 
 
 
 0-907 1 16'8 
 
 
 
 
 123 
 
 Sept. 27 
 
 5 7 6 0-841 
 
 77 -o i 7 o-2 
 
 + 14-6 
 
 49 
 
 (96) 
 
 264 
 (53 4 ) 
 
 6gg nf 
 
 (H93) 
 
 Oct. 2 
 
 0-Q25 
 
 1 
 1 
 
 96-2 
 
 
 
 (75) 
 
 (35 1) 
 
 98 
 
 (> 2 99) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 * Indian photo. The Areas of Spots and Faculae are expressed in Millionths of the Sun's visible Hemisphere. 
 
REDUCTION OF SOLAR PHOTOGRAPHS THROUGHOUT 1878-1881. 
 
 MEASrnES of POSITIONS and AREAS of SPOTS and FACI-L.E upen the SUN'S DISK on PHOTOGRAPHS taken in the YEAH 1881 continued. 
 
 
 
 U- 
 
 HELIOORAPHIC 
 
 SrOTS. 
 
 FACULJE. 
 
 
 Qit. 
 
 
 III MOOKAPHIC 
 
 SPOTS. 
 
 FACUL.*. 
 
 
 Xo. of 
 
 tance 
 
 
 
 
 
 , T - t;iin'i' 
 
 N o. of f 
 
 . . 
 
 
 
 
 Mean 
 Solar 
 Time. 
 
 tr-r 
 tr r 
 
 *- si. 
 
 ! Kadiuv. 
 
 Position 
 Angle 
 
 Su --<*- 
 Vxi -' tnde. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBRA 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 WHOLE 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 Mean 
 
 Solar 
 Time. 
 
 no iii 
 
 r/" <* 
 
 te', 
 for 
 
 ** Suk 
 Radius. 
 
 . osidon 
 Angle 
 from 
 Sun's 
 Axis. 
 
 Longi- 
 tude. 
 
 Lati- ' 
 tude. 
 
 Area of 
 JMBKA 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 WIIOLK 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 1881. 
 
 
 
 
 
 o 
 
 o 
 
 
 
 
 1881. 
 
 
 
 
 
 
 
 
 
 
 
 I74 d '920 
 
 
 0-922 
 
 307-2 
 
 
 
 
 
 ig3 
 
 2794-796 
 
 
 0-974 
 
 289-5 
 
 
 
 1445 
 
 
 583 
 
 0-926 
 
 288-6 
 
 218-9 
 
 4-I9-6 
 
 I 1 
 
 53 
 
 2i6c 
 
 
 
 0-752 235-0 
 
 
 637 
 
 
 5 79 
 
 o-gi I 
 
 H9'4 
 
 212'g 
 
 -i5-7 
 
 9 
 
 20 
 
 i go s 
 
 
 58 1 0-789 23g-8 
 
 i32-o 19-0 28 
 
 155 
 
 
 
 58o 
 
 O'7o3 
 
 285-9 
 
 *94'9 
 
 4-10-8 
 
 13 
 
 46 
 
 167 c 
 
 
 58 1 0-746 233'7 
 
 126-1 21-5 10 
 
 90 
 
 
 
 5 7 6 
 
 o-36o 
 
 293-9 
 
 170-2 
 
 4-I4-5 
 
 28 
 
 1 58 
 
 
 
 58 1 0-705 
 
 228-3 
 
 120-7 22-8 4 
 
 20 
 
 
 
 58 1 
 
 0-573 
 
 141-5 
 
 128-1 
 
 2O-5 
 
 9 
 
 47 
 
 
 
 586 0-733 
 
 76-4 
 
 38-g +14-2 47 
 
 280 
 
 
 
 582 
 
 0-740 
 
 79-6 
 
 102-5 
 
 4-I2-I 
 
 8 
 
 ii 
 
 
 
 586 0-737 
 
 79-2 
 
 38-4 4-12-1 o 
 
 16 
 
 
 
 584 0-807 
 
 77-1 
 
 96-4 
 
 4-14-2 
 
 
 
 4 
 
 5o8c 
 
 
 586 
 
 0760; 77-1 
 
 36-o 4-13-8 5 
 
 57 
 
 
 
 0-852 
 
 98-2 
 
 
 
 
 
 87 
 
 
 586 
 
 0-802 
 
 7 8-I 
 
 32-5 4-13-3 II 
 
 48 
 
 ii45/ 
 
 
 
 0-868 
 
 I2I-0 
 
 
 
 
 
 146 
 
 Oct. 8* 
 
 
 
 
 
 (1 05) 
 
 (666) 
 
 (322 7 ) 
 
 Oct. 3 
 
 
 
 
 
 
 (78) 
 
 (349) 
 
 (i5o 7 ) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 280-800 
 
 58 1 
 
 o-go3 
 
 245-0 
 
 i32'9 
 
 ig-5 
 
 18 
 
 io3 
 
 
 
 
 
 
 
 
 
 
 
 
 58i 0-870 242-3 
 
 127-9 
 
 20-4 
 
 o 
 
 121 
 
 
 275-962 
 
 
 0-969 
 
 25o-5 
 
 
 
 
 
 326 
 
 
 58i o-85i 241-6 
 
 125-5 
 
 20-2 
 
 9 
 
 39 
 
 926 c 
 
 
 583 
 
 0-979 
 
 289-9 
 
 2 1 6-3 
 
 4-20-8 
 
 40 
 
 141 
 
 252 S p 
 
 
 58 1 0-856 23g'4 
 
 125-3 22'2 
 
 o 
 
 28 
 
 
 
 58o 
 
 0-806 
 
 284-1 195-8 
 
 4-i 5-4 
 
 8 
 
 56 
 
 36i c 
 
 
 586a 
 
 0-726 ' 222-2 
 
 1O6'0 27-4 
 
 
 
 67 
 
 
 
 576 
 
 o-5 60 
 
 286-2 
 
 170-2 
 
 4-H'4 
 
 24 
 
 141 
 
 
 
 586 
 
 0-064 73-9 
 
 3g-o +14-1 
 
 38 
 
 269 
 
 
 
 58 1 0-473 
 
 161-9 
 
 1277 
 
 20-3 
 
 25 
 
 9 3 
 
 
 
 586 
 
 0-594 75-6 
 
 36-7 
 
 4-13-4 
 
 
 
 36 
 
 
 
 582 
 
 o'56o 
 
 78-2 
 
 102-7 
 
 4-irg 
 
 8 
 
 18 
 
 
 
 586 
 
 0-646 
 
 77-2 
 
 32-7 
 
 4-12-9 
 
 4 
 
 21 
 
 
 
 58 4 
 
 0-642 
 o-g83 
 
 7 5-5 
 
 797 
 
 97-0 
 
 4-14-2 
 
 o 
 
 5 
 
 222 
 
 Oct. 9* 
 
 
 0-799 
 
 7*7 
 
 
 
 (69) 
 
 .(655) 
 
 474 
 (1400) 
 
 Oct. 4 
 
 
 
 
 
 
 (io3) 
 
 (449) 
 
 (ll6l) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 281793 
 
 58 1 
 
 0-974 248-3 
 
 133-3 
 
 ig-5 
 
 
 
 i38 
 
 
 
 
 
 
 
 
 
 
 
 
 58 1 o-g52 246-2 
 
 127-8 ; 20-4 
 
 o 
 
 128 
 
 9070 
 
 276786 
 
 58o 
 
 0-962 
 
 283-5 
 
 198 8 
 
 4-14-8 
 
 o 
 
 88 
 
 
 
 58 1 o-g36 245-4 
 
 124-7 -20-4 
 
 o 
 
 67 
 
 
 
 58o 0-921 
 
 283-3 
 
 I 9 3-5 
 
 4- H7 
 
 8 
 
 62 
 
 12770 
 
 
 586 o-38o 66-6 
 
 38-7 4-14-4 
 
 4 3 
 
 2g5 
 
 
 
 576 0-701 
 
 283-7 
 
 170-2 
 
 4-H-i 
 
 20 
 
 85 
 
 
 586 0-432 73-6 
 
 34-7 4-12-6 
 
 o 
 
 10 
 
 
 
 58i 0-446 191-2 
 
 i3ri 
 
 ig-5 
 
 20 
 
 1 08 
 
 
 
 586 
 
 0-470 
 
 74-0 
 
 32-2 
 
 -f 12-8 
 
 
 
 18 
 
 
 
 58i 0-453 182-7 
 
 127-1 
 
 20-4 
 
 16 
 
 60 
 
 
 
 587 
 
 0'502 
 
 126-2 
 
 35- 4 
 
 -11-7 
 
 i5 
 
 61 
 
 
 
 58 1 0-485 
 
 1767 
 
 124-1 
 
 22-4 
 
 O 
 
 35 
 
 
 
 587 
 
 0-553 
 
 1227 3 1-4 
 
 I2'0 
 
 4 
 
 57 
 
 
 
 582 
 
 o-3 9 7 
 0-946 
 
 74'4 
 79' 
 
 102-9 
 
 4-12-1 
 
 4 
 
 18 
 
 5go 
 
 Oct. 10* 
 
 588 
 
 0-973 
 
 66-4 
 
 34r9 
 
 4-24-3 
 
 o 
 <6a) 
 
 142 
 
 (886) 
 
 745 c 
 (|652) 
 
 Oct. 5 
 
 
 
 
 
 
 (68) 
 
 ( 4 56) 
 
 (1867) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 282784 
 
 
 0-979 
 
 246-4 
 
 
 
 
 
 840 
 
 
 
 
 
 
 
 
 
 
 
 
 0-877 
 
 282-1 
 
 
 
 
 
 55g 
 
 277791 
 
 
 0-981 
 
 284-6 
 
 
 
 
 
 77' 
 
 
 586 
 
 o-ig3 
 
 42-8 3g'o 
 
 4-14-1 
 
 4i 
 
 219 
 
 
 
 
 o-go3 
 
 235-1 
 
 
 
 
 
 i3gi 
 
 
 586 
 
 0-214 
 
 52-o 36-8 
 
 4-i3-5 
 
 
 
 *9 
 
 
 
 576 
 
 0-844 
 
 283-0 
 
 170-5 
 
 4-14-3 
 
 27 
 
 u3 
 
 
 
 58 7 
 
 0-342 
 
 i5o-4 36-8 
 
 -n-3 
 
 17 
 
 no 
 
 
 
 585 
 
 o-8o3 
 
 289-0 
 
 i65-8 
 
 4-ig'o 
 
 5 
 
 5 4 
 
 
 
 58 7 
 
 0-384 
 
 140-9 32-4 
 
 -11-4 
 
 
 
 48 
 
 541 s 
 
 
 58 1 
 
 o'53o 
 
 216-0 
 
 i3i-8 
 
 -*9'4 
 
 28 
 
 1 80 
 
 
 
 58 7 
 
 0-408 
 
 141-7 3i'7 
 
 12 8 
 
 o 
 
 17 
 
 
 
 58 1 
 
 0-492 
 
 204-5 
 
 1 25-1 
 
 20-3 
 
 17 
 
 65 
 
 
 
 587 
 
 0-413 
 
 i38'7 3o-6 
 
 -12-3 
 
 17 
 
 70 
 
 
 
 58 1 
 
 0-524 , 200- 1 
 
 1 23-g 
 
 23-2 
 
 o 
 
 i5 
 
 
 
 588 o-giS 
 
 66-0 
 
 340-4 
 
 4-24-3 
 
 4 
 
 109 
 
 
 
 586 
 
 o-gSg 
 
 76-7 
 
 38-2 
 
 + H' 6 
 
 78 
 
 267 
 
 12400 
 
 Oct. 11* 
 
 t 
 
 
 
 
 
 (79) 
 
 (602) 
 
 (1940) 
 
 Oct. 6* 
 
 
 
 
 
 
 (i 55) 
 
 (694) 
 
 (3 4 02) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 283796 
 
 
 0-9 56 
 
 238-1 
 
 
 
 
 
 1367 
 
 
 
 
 
 
 
 
 
 
 
 
 0-934 
 
 282-6 
 
 
 
 
 
 1062 
 
 278-899 
 
 
 o- 9 3 4 
 
 237-0 
 
 
 
 
 
 406 
 
 
 586 
 
 o'l 69 
 
 324-1 39-1 
 
 4-13-7 
 
 48 
 
 242 
 
 
 
 576 
 
 o-g5o 
 
 283-0 
 
 170-5 
 
 4-U-3 
 
 29 
 
 79 
 
 
 
 586 
 
 ' 0-192 340-9 37-0 
 
 4-16-3 
 
 3 
 
 16 
 
 
 
 585 
 
 o-g3- 
 
 289-5 
 
 168-1 +20-4 
 
 o 
 
 5o 
 
 556 nf 
 
 
 586 0-140 334-3 36-g 
 
 4-I3-I 
 
 
 
 29 
 
 
 
 
 58 1 
 
 o'66q 
 
 232-3 
 
 1.11-8 18-9 
 
 3i 160 
 
 
 
 587 
 
 o-3og 1 93-4 37-5 
 
 i r6 
 
 23 
 
 122 
 
 
 
 58 1 
 
 0-618 
 
 220-1 
 
 125-6 
 
 -20-3 
 
 20 log 
 
 143 c 
 
 
 587 
 
 0-296 188-1 35-7 
 
 i ri 
 
 3 
 
 i5 
 
 
 
 586 
 
 0-857 
 
 7 6< 9 
 
 38-6 
 
 4-14-4 
 
 87 343 
 
 
 
 587 
 
 o'3o8 176-4 32-2 
 
 -irg 
 
 o 
 
 33 
 
 
 
 586 
 
 0-88.5 
 
 78-3 
 
 35-5 
 
 4-13-3 
 
 12 204 
 
 573 nj 
 
 
 587 o-32i 171-8 3o-6 
 
 -12-6 
 
 17 
 
 7 
 
 
 
 
 o-g3 1 
 
 105-7 
 
 
 
 
 200 
 
 
 588 0-814 63-g 340-1 
 
 4-24-5 
 
 14 
 
 63 
 
 
 Oct. 7 
 
 
 
 
 
 
 (179) ( 9 5o) 
 
 (1878) 
 
 Oct. 12 
 
 
 0-929 
 
 66-2 
 
 
 
 (108) 
 
 (59*) 
 
 1124 
 
 ( 4 o53) 
 
 * Indian photo. The Arras of Spots and Faculso are expressed in Nfillionths of the Sun's visible Hemisphere. 
 
70 
 
 REDUCTION OF SOLAR PHOTOGRAPHS THROUGHOUT 1878-1881. 
 
 MEASURES of POSITIONS and AREAS of SPOTS and FACUL^E upon the SUN'S DISK on PHOTOGRAPHS taken in the YEAR 1881 continued. 
 
 
 
 Dis- 
 
 
 HELIOGRAPHIC 
 
 SPOTS. 
 
 FACUL.S. 
 
 
 
 Dis- 
 
 
 HELIOGBAPHIC 
 
 SPOTS. 
 
 FACUL^E. 
 
 Moan 
 Solar 
 Time. 
 
 No. of 
 Group, 
 and 
 Letter 
 for 
 Spot. 
 
 tance 
 from 
 Centre 
 in 
 terms 
 of 
 Sun's- 
 
 Position 
 Angle 
 from 
 Sun's 
 Axis. 
 
 
 
 
 Mean 
 
 Solar 
 Time. 
 
 No. of 
 Group, 
 and 
 Letter 
 for 
 Spot. 
 
 tance 
 from 
 Centre 
 in 
 terms 
 of 
 Sun's 
 
 Position 
 Angle 
 from 
 Sun's 
 Axis. 
 
 
 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBRA 
 
 for each 
 Spot 
 (and for 
 
 Area of 
 WHOLE 
 for each 
 Spot 
 (and for 
 
 Area for 
 each 
 Group 
 (and for 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBRA 
 for each 
 Spot 
 (and for 
 
 Area of 
 WHOLE 
 
 for each 
 Spot 
 (and for 
 
 Area for 
 each 
 Group 
 (and for 
 
 
 
 Radius. 
 
 
 
 
 Day). 
 
 Day). 
 
 Day). 
 
 
 
 iudius. 
 
 
 
 
 Day). 
 
 Day). 
 
 Day). 
 
 ' i 
 
 
 
 
 
 
 
 
 
 
 ] 
 
 
 
 1881. 
 
 
 
 o 
 
 o 
 
 
 
 
 
 
 l88l. 
 
 
 
 o 
 
 
 
 
 
 
 
 
 284 d 78o 
 
 
 0-g52 
 
 288-2 
 
 
 
 
 
 1 536 
 
 2gi d -022 
 
 
 0-790 
 
 2go-3 
 
 
 
 
 
 9' 
 
 
 586 
 
 0-348 
 
 294-5 
 
 3q-2 
 
 4-13-8 
 
 34 
 
 25g 
 
 
 
 58g 
 
 0-240 
 
 3g- 4 
 
 288-9 
 
 4-io-g 92 
 
 443 
 
 
 
 587 
 
 0-422 I 226-6 
 
 38'4 
 
 I T2 
 
 9 
 
 35 
 
 
 
 5go 
 
 0-587 
 
 74' 
 
 262-7 
 
 4-i3 - 7 34 
 
 '77 
 
 
 
 587 
 
 0-408] 224-6 
 
 3 7 '2 
 
 11-2 
 
 o 
 
 21 
 
 
 
 5gi 
 
 0-6 1 8 
 
 627 
 
 262-2 
 
 4-20-8 26 
 
 '47 
 
 H/ 
 
 
 587 
 
 0-364 
 
 21 5-8 
 
 32-8 
 
 I I'3 
 
 
 
 24 
 
 
 
 5g2 
 
 0-696 
 
 125-4 
 
 261-2 
 
 i g-5 29 
 
 291 
 
 
 
 587 
 
 O-354 
 
 2og-g 
 
 3o-6 
 
 I2-O 
 
 i5 
 
 68 
 
 
 
 5g2 
 
 73g 
 
 I23'O 
 
 257-0 
 
 -197 
 
 12 
 
 87 
 
 i3i c 
 
 
 588 
 
 o'6g5 
 
 5g-6 
 
 33g-i 
 
 4-25-0 
 
 
 
 24 
 
 
 
 
 O'qi6 
 
 118-0 
 
 
 
 
 
 1 65 
 
 
 
 0-847 
 
 66-1 
 
 
 
 
 
 670 
 
 
 
 0-954 
 
 74-3 
 
 
 
 
 
 240 
 
 Oct. i3* 
 
 
 
 
 
 
 (58) 
 
 (43 ') 
 
 (2206) 
 
 Oct. 19 
 
 
 
 
 
 
 (I 9 3) 
 
 ("45) 
 
 (68 1) 
 
 285-898 
 
 586 
 
 o-566 
 
 285-g 
 
 3g-5 
 
 4-13-7 
 
 56 
 
 244 
 
 
 
 
 
 
 
 
 
 
 
 
 587 
 
 0-617 
 
 243-1 
 
 3g-6 
 
 11-4 
 
 4 
 
 9 
 
 
 291-978 
 
 
 0-854 
 
 2937 
 
 
 
 
 
 '94 
 
 
 587 
 
 o-5 1 8 
 
 235-4 
 
 3i-5 
 
 u-8 
 
 10 
 
 '9 
 
 
 
 58g 
 
 o-ig8 
 
 342-4 
 
 289-0 
 
 + 16-1 
 
 94 
 
 544 
 
 
 
 588 
 
 0-533 
 
 5i-3 
 
 338-5 
 
 4-24-6 
 
 7 
 
 '9 
 
 
 
 5go 
 
 o-3g2 
 
 72-0 
 
 263-1 
 
 + 11-8 
 
 23 
 
 78 
 
 
 
 58g 
 
 0-966 
 
 74-8 
 
 28g-8 
 
 4-16-1 
 
 3o 
 
 314 
 
 372 np 
 
 
 5go 
 
 0-410 
 
 66-5 
 
 262-7 
 
 4-14-3 
 
 4' 
 
 184 
 
 
 
 
 0-917 
 
 11 3-3 
 
 
 
 
 
 21 I 
 
 
 5gi 
 
 0-464 
 
 527 
 
 262-2 
 
 4-21-1 
 
 26 
 
 120 
 
 
 Oct. 14 
 
 
 
 
 
 
 ('07) 
 
 (6o5) 
 
 (583) 
 
 
 5gi 
 
 o-5o5 
 
 55-i 
 
 25g-i 
 
 4-21-5 
 
 3 
 
 9 
 
 
 
 
 
 
 
 
 
 
 
 
 5g2 
 
 o-56 1 
 
 i36-g 
 
 261-0 
 
 ig-3 
 
 65 
 
 2 go 
 
 
 
 
 
 
 
 
 
 
 
 
 5g2 
 
 0-583 
 
 1 33-7 
 
 25g-i 
 
 ig-o 
 
 
 
 17 
 
 
 286-898 
 
 586 
 586 
 
 0737 283-7 
 0-711 287-6 
 
 397 
 3 7 -2 
 
 4-16-4 
 
 4 5 
 
 10 
 
 227 
 38 
 
 252 C 
 
 
 5g2 
 5g3 
 
 0-6 u 
 
 1 32 -4 
 
 70-3 
 
 256-g 
 214-0 
 
 i 9-6 
 4-20-3 
 
 '9 
 
 32 
 
 129 
 
 go 
 
 4 33 p 
 
 
 58g 
 
 0-881 
 0-878 
 
 75-0 
 5g-2 
 
 2 9 o- 4 
 
 + i5"g 
 
 47 
 
 288 
 
 1 33 
 
 Oct. 20 
 
 
 0-844 
 
 123-2 
 
 
 
 (3o3) 
 
 (1461) 
 
 77 
 (74) 
 
 Oct. 1 5 
 
 
 
 
 
 
 (102) 
 
 (553) 
 
 (1004) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 292-775 
 
 
 0-907 
 
 297-1 
 
 
 
 
 
 58o 
 
 287-787 
 
 
 o-83i 
 
 252-1 
 
 
 
 
 
 512 
 
 
 58g 
 
 o-3 1 5 
 
 3oo-3 
 
 2gn 
 
 4-14-1 
 
 i5 
 
 5o 
 
 
 1 II 
 
 586 0-807 
 
 282-9 
 
 39'9 
 
 4-14-0 
 
 4 3 
 
 184 
 
 998 c 
 
 
 58g 
 
 o-3o6 
 
 3og"4 
 
 28g-i 
 
 4-16-2 
 
 92 
 
 426 
 
 
 Oct. i6 
 
 58g 
 58g 
 5gi 
 5 go 
 
 0-773 
 0-840 
 o- 9 76 
 o-g8o 
 
 74-2 
 74-6 
 
 ~9'9 
 78-0 
 
 2 9 0'3 
 
 283-3 
 262-1 
 261-4 
 
 4-16-0 
 4-20-9 
 + 12-9 
 
 38 
 
 o 
 o 
 
 
 
 (80 
 
 170 
 
 23 
 
 , 4 3 
 196 
 (716) 
 
 Il52 / 
 
 i568 c 
 ( 4 23o) 
 
 
 5go 
 5go 
 5gi 
 5gi 
 5 9 2 
 
 0-229 
 o-265 
 0*346 
 0-376 
 0-466 
 
 517 
 36-8 
 40-0 
 
 263-5 
 262-5 
 262-1 
 25g-g 
 26r3 
 
 4-I2-I 
 
 4-'4'5 
 
 4-21-2 
 
 4-21-7 
 
 ig-o 
 
 i5 
 
 25 
 
 17 
 9 
 36 
 
 go 
 
 '49 
 127 
 26 
 
 198 
 
 
 
 
 
 
 
 
 
 
 
 
 5g2 
 
 0'5 1 2 
 
 144-2 
 
 266-4 
 
 ig-5 
 
 '9 
 
 89 
 
 
 
 
 
 
 
 
 
 
 
 
 5g3 
 
 0-843 
 
 6g-2 
 
 218-0 
 
 + 20-3 
 
 
 
 '9 
 
 
 288-923 
 
 586 
 58g 
 
 0-948 
 0-962 
 o-5go 
 
 255-2 
 
 282-3 
 
 6 9'9 
 
 40-4 
 2go - 6 
 
 4-13-3 
 + 16-2 
 
 53 ' 
 
 52 
 
 3o8 
 
 199 
 
 297 
 
 3g3n/ 
 
 Oct. 21* 
 
 5g3 
 
 0-894 
 0-961 
 
 6g-5 
 76-3 
 
 2117 
 
 + 20-6 
 
 
 (228) 
 
 46 
 (1220) 
 
 863 c 
 1420 
 (2863) 
 
 
 58g 
 
 o-63i 
 
 717 
 
 2877 
 
 4-15-8 
 
 5 
 
 i5 7 
 
 
 
 
 
 
 
 
 
 
 
 
 58g 
 5go 
 5gi 
 5g2 
 5 9 2 
 
 0-682 
 0-889 
 o-8g3 
 o-g3i 
 o-g55 
 
 O'Q22 
 
 72-8 
 
 777 
 69-2 
 i i3"o 
 li2-g 
 56-2 
 
 283-3 
 262-7 
 262-5 
 26o-g 
 256-6 
 
 4-i3-5 
 
 4-2TO 
 19-0 
 -I9'9 
 
 9 
 
 32 
 
 3o 
 5 7 
 o 
 
 25 
 220 
 
 no 
 
 i go 
 8 
 
 291 nf 
 5io/ 
 
 406 c 
 
 293-784 
 
 58g 
 5go 
 5go 
 5go 
 5gi 
 
 0-487 
 0-129 
 0-102 
 O'l66 
 0-276 
 
 294-6 
 
 344'9 
 352-4 
 355-g 
 358-8 
 
 288-9 
 263-6 
 262-4 
 262-3 
 262-0 
 
 + 16-2 
 4-12-3 
 4-io-q 
 4-14-6 
 
 4-2TI 
 
 46 
 
 8 
 
 
 
 24 
 '7 
 
 382 
 
 37 
 8 
 i3 7 
 1 08 
 
 
 Oct. 17 
 
 
 \j y** 
 
 
 
 
 (238) 
 
 (1217) 
 
 (2251) 
 
 
 5g2 
 
 0-416 
 
 178-1 
 
 260-8 
 
 -ig- 4 
 
 40 
 
 175 
 
 
 
 
 
 
 
 
 
 
 
 
 5g2 
 
 0-427 
 
 1727 
 
 z58 - 3 
 
 -9'9 
 
 
 
 53 
 
 
 
 
 
 
 
 
 
 
 
 
 5g2 
 
 0-427 
 
 167-9 
 
 256-2 
 
 ig-5 
 
 32 
 
 97 
 
 
 289-896 
 
 58g 
 5go 
 5gi 
 5q2 
 
 o-gl6 
 0-437 
 : 0-769 
 0-783 
 
 o-83i 
 
 2go-8 
 - 63-g 
 75-8 
 67-6 
 117-8 
 
 288-g 
 262-8 
 262-3 
 26rg 
 
 4-16-0 
 
 !+HH 
 4-20-8 
 19-4 
 
 78 
 46 
 
 27 
 37 
 
 335 
 
 225 
 
 126 
 
 178 
 
 I 7 
 
 
 594 
 594 
 5 94 
 
 3 94 
 5g3 
 
 0-296 
 O-29O 
 
 o-3o5 
 0-328 
 0-716 
 
 26-7 
 36-5 
 38'4 
 35-8 
 66-1 
 
 253'5 
 25ro 
 
 25O'I 
 
 249-8 
 217-4 
 
 4-20-3 
 4-18-7 
 4- 1 8-8 
 4-20-4 
 4-2O-5 
 
 3 
 
 o 
 
 
 
 7 
 
 
 
 22 
 
 3o 
 8 
 64 
 18 
 
 
 
 y 
 
 5g2 
 
 0-874 
 0-858 
 
 1 1 6-6 
 52-o 
 
 256-8 
 
 ' 20-0 
 
 4 
 
 12 
 
 253 c 
 144 
 
 
 5g3 
 5g3 
 
 0770 
 0789 
 
 68-3 
 67-5 
 
 212*2 
 
 210-6 
 
 4-ig-g 
 4-20-8 
 
 o 
 o 
 
 10 
 
 18 
 
 
 Oct. 1 8 
 
 
 
 
 
 
 ('92) 
 
 (8 7 6) 
 
 (99') 
 
 Oct. 22* 
 
 
 o'Sgo 
 
 74'9 
 
 
 
 (177) 
 
 (1167) 
 
 i5o5 
 (i5o5) 
 
 Indian photo. The Areas of Spots and Facute are expressed in Millionths of the Sun's visible Hemisphere. 
 
REDUCTION OF SOI.AK Pnr'> ( ;i; \riis THROUGHOUT 1878-1881. 
 
 71 
 
 MEASURES of 
 
 POSITIONS and AREAS of SPOTS and FACUL* upon the SUN'S DISK on PHOTOGRAPHS taken in the YEAR 1881 continued. 
 
 
 
 Dis- 
 
 
 HKIJOOKAPBIO 
 
 SPOTS. 
 
 FACUL*. 
 
 
 
 Dis- 
 
 
 HKLIOORAI'HIC 
 
 SPOTS. 
 
 FACUL.K. 
 
 Mean 
 Solar 
 Time. 
 
 No. of 
 Group, 
 anil 
 Letter 
 for 
 Spot. 
 
 tance 
 froai 
 Centre 
 in 
 terms 
 of 
 Sun's 
 Radius. 
 
 Position 
 Angle 
 from 
 SOB'S 
 Axis. 
 
 
 
 
 Mean 
 Solar 
 Time. 
 
 No. of 
 jroup, 
 and 
 Letter 
 for 
 Spot. 
 
 tance 
 from 
 Centre 
 in 
 terms 
 of 
 Sun's 
 Radius. 
 
 Position 
 Angle 
 from 
 Sun'i 
 Axis. 
 
 
 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 DMBBA 
 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 \VHOLK 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBHA 
 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 WHOLE 
 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 1881. 
 
 
 
 o 
 
 o 
 
 o 
 
 
 
 
 1881. 
 
 
 
 
 
 o 
 
 o 
 
 
 
 
 2 9 4 d 788 
 
 58g 
 
 0-665 
 
 288-5 
 
 289-2 
 
 4-1 5-g 
 
 63 
 
 33 7 
 
 
 298*785 
 
 5go 
 
 o-gog 
 
 284-2 
 
 261-2 
 
 + 4-9 
 
 O 
 
 io5 
 
 
 
 5go 
 
 0'28g 296-4 
 
 263-7 4- 1 2- 1 
 
 7 
 
 16 
 
 
 
 5g2 
 
 0-929 
 
 246-0 
 
 260-2 
 
 20-2 
 
 25 
 
 "47 
 
 
 
 5go 
 
 0-289 
 
 306-4 
 
 262-2 
 
 + 47 
 
 20 
 
 123 
 
 
 
 5g2 
 
 o-go3 
 
 245-g 
 
 256-4 
 
 -ig-4 
 
 o 
 
 20 
 
 
 
 5gi 
 
 0-307 
 
 32 1 7 
 
 262-0 
 
 4-21-1 
 
 25 
 
 93 
 
 
 
 5 94 
 
 o-8i3 
 
 289-5 
 
 249'4 
 
 4-18-6 
 
 o 
 
 13 
 
 
 
 5g2 
 
 0-460 
 
 2o5'9 
 
 260-7 
 
 -19-4 
 
 4' 
 
 133 
 
 
 
 594 
 
 o-799 
 
 292-2 
 
 247-6 
 
 4-20-4 
 
 3 
 
 86 
 
 
 
 5g2 
 
 0-437 "97'7 
 
 256-5 
 
 ig-6 
 
 17 
 
 87 
 
 
 
 594 
 
 o-8o5 
 
 294'6 
 
 247-9 
 
 4-22-5 
 
 o 
 
 32 
 
 
 
 5g4 
 
 0-284 342-1 
 
 253'7 
 
 4-20-6 3 
 
 16 
 
 
 
 5g5a 
 
 0-206 
 
 22'4 
 
 141-5 
 
 4-15-6 
 
 
 
 56 
 
 
 . 
 
 
 0-249 344-4 202-4 418-8 18 
 
 62 
 
 
 
 5g5 
 
 o-gi2 
 
 
 33-7 
 
 ig-3 
 
 o 
 
 38 
 
 1 854 
 
 
 594 
 
 0-269 
 
 358-3 248-9 4-20-6 38 
 
 196 
 
 
 Oct. 27* 
 
 
 
 
 
 
 (28) 
 
 (502) 
 
 (I85 4 ) 
 
 
 5g? 
 
 0-622 
 
 63-3 212-2 +20-2 o 
 
 6 
 
 
 
 
 
 
 
 
 
 
 
 
 5g3 
 
 0-647 
 
 63-5 210-3 4-2O-8 o 
 
 '4 
 
 
 
 
 
 
 
 
 
 
 
 
 
 0798 
 
 74-8 
 
 
 
 
 1690 
 
 299-77 5 
 
 5 go 
 
 0-977 
 
 284-4 
 
 260-7 
 
 4-1 5-o 
 
 
 
 72 
 
 
 Oct. 23* 
 
 
 
 
 
 ' (232) 
 
 (io83) 
 
 (i6go) 
 
 
 5g2 
 
 0-982 
 
 248-7 
 
 258-8 
 
 i 9-8 
 
 16 
 
 98 
 
 653 c 
 
 
 
 
 
 
 
 
 
 
 5 94 
 
 0-902 
 
 291-4 
 
 246-5 
 
 4-21-2 
 
 
 
 36 
 
 
 2 9 5'78o 
 
 58g 
 
 o'8o5 286-4 288-6 4-16-1 53 
 
 357 
 
 
 
 5g5 
 
 0-811 
 
 118-1 
 
 i33- 4 
 
 ~'9'4 
 
 i3 
 
 32 
 
 
 
 5go 
 
 0-491 287-1 263-9 4-12-6 o 
 
 5 
 
 
 
 
 0-876 
 
 II8-3 
 
 
 
 
 
 5ig 
 
 
 5go 
 
 0-473 292-6 262-0 4-14-8 18 
 
 107 
 
 
 Oct. 28" 
 
 
 
 
 
 
 (29) 
 
 (238) 
 
 (1172) 
 
 
 5gi 
 
 o-5i i 304-4 262-1 
 
 4-21-2 24 
 
 88 
 
 
 
 
 
 
 
 
 
 
 
 
 
 0-569 2247 
 
 260-3 
 
 -ig-3 
 
 21 
 
 144 
 
 
 
 
 
 
 
 
 
 
 
 
 092 
 
 0-528 220-2 
 
 256-4 
 
 -19-1 
 
 26 
 
 107 
 
 
 3oo-g86 
 
 
 0-928 
 
 246-0 
 
 
 
 
 
 202 
 
 
 5 94 
 
 0-416 3i3-8 
 
 254-0 
 
 4-21-4 o 
 
 9 
 
 
 
 
 o-go5 
 
 299-0 
 
 
 
 
 
 129 
 
 
 
 5 94 
 
 o - 3g3 
 
 3 irg 
 
 253-3 4-19-8 17 
 
 68 
 
 
 
 
 0-783 
 
 2927 
 
 
 
 
 
 58 1 
 
 
 594 
 
 0-348 
 
 321-0 
 
 248-8 
 
 4-20-4 
 
 5o 
 
 249 
 
 
 
 594 
 
 0-990 
 
 291-5 
 
 249-3 
 
 4-21-g 
 
 o 
 
 IO2 
 
 2690 
 
 
 5g3 
 
 0-406 
 
 47-5 
 
 216-7 
 
 4-20-5 o 
 
 9 
 
 
 
 5g5 
 
 0-657 
 
 I26'9 
 
 i32-g 
 
 ig-5 
 
 6 
 
 25 
 
 
 
 5g3 
 
 0-465 
 
 53-3 
 
 211-9 
 
 4-20-6 o 
 
 9 
 
 
 
 
 0-680 
 
 I25'7 
 
 
 
 
 
 4 26 
 
 
 5g3 
 
 0-496 
 
 5 4 - 4 
 
 2og-8 
 
 4-21-2 
 
 o 
 
 '4 
 
 
 
 
 0-872 
 
 7 5-5 
 
 
 
 
 
 345 
 
 
 
 o-gSg 
 
 67-0 
 
 
 
 
 
 6o3 
 
 
 
 0-898 
 
 96-7 
 
 
 
 
 
 1 66 
 
 Oct. 24' 
 
 
 
 
 
 
 (210) 
 
 (1166) 
 
 (6o3) 
 
 
 
 o-g56 
 
 ug'3 
 
 
 
 
 
 94 
 
 
 
 
 
 
 
 
 
 
 Oct. 2g 
 
 
 
 
 
 
 (6) 
 
 (127) 
 
 (2212) 
 
 2g6-g3o 
 
 58g 
 
 0-924 
 
 285-2 
 
 287-8 
 
 4-i5'g 
 
 104 
 
 3go 
 
 574/ 
 
 
 
 
 
 
 
 
 
 
 
 5gi 
 
 o-6g3 
 
 295-9 
 
 261-9 
 
 4-21-2 
 
 26 
 
 102 
 
 
 
 
 
 
 
 
 
 
 
 
 5go 
 
 0-665 
 
 287-5 
 
 261-0 
 
 4-i5-i 
 
 44 
 
 I 4 2 
 
 
 302-068 
 
 
 0-916 
 
 289-7 
 
 
 
 
 
 449 
 
 
 5 9 2 
 
 0-727 
 
 236-3 
 
 260-0 
 
 20-1 
 
 36 
 
 i5o 
 
 
 
 5g6 
 
 0-700 
 
 246-1 
 
 i 9 3-3 
 
 -1 3-2 
 
 
 
 7 
 
 
 
 5 9 2 
 
 0-683 
 
 234-9 
 
 256-2 
 
 ig-2 1 27 68 
 
 
 
 5g6 
 
 o-65o 
 
 242-6 
 
 188-6 
 
 i 3-g 
 
 
 
 16 
 
 
 
 5 94 
 
 0-588 
 
 299-0 
 
 253-3 
 
 4-20-6 
 
 i5 
 
 4 3 
 
 
 
 
 0-870 
 
 68-2 
 
 
 
 
 
 io3 
 
 
 594 
 
 O-53" 2gq'8 
 
 249-7 
 
 4-19-6 9 
 
 9 5 
 
 
 Oct. 3o 
 
 
 
 
 
 
 (o) 
 
 (23) 
 
 (552) 
 
 
 594 
 
 o-523 3o3-2 
 
 247-9 
 
 4-20-9 4 5 
 
 214 
 
 
 
 
 
 
 
 
 
 
 
 
 5g3 
 
 0-337 3o'5 
 
 209-6 
 
 4-21-6 
 
 5 
 
 10 
 
 
 
 
 
 
 
 
 
 
 
 
 
 o-837 j 687 
 
 
 
 
 
 250 
 
 3o2'75g 
 
 
 0-888 
 
 290-8 
 
 
 
 
 
 680 
 
 
 0-916 
 
 125-8 
 
 
 
 224 
 
 Oct. 3i* 
 
 
 
 
 
 
 
 
 (680) 
 
 Oct. 25 
 
 
 
 (3n) 
 
 (1214) 
 
 (1048) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 * 
 
 
 3o3-653 
 
 
 0-878 
 
 252-1 
 
 
 
 
 5 7 2 
 
 297-906 
 
 0-790 , 3io-3 
 
 
 
 
 67 
 
 
 5g6a o'goo 284-8 
 
 I93-5 
 
 4-iS-i o 
 
 36 
 
 58g 
 
 0-989 284-3 
 
 289-0 
 
 + 14-9 
 
 o 207 
 
 63gn/ 
 
 
 5g6a 0-875 
 
 285-4 
 
 ig2-3 
 
 4-15-5 
 
 o 
 
 26 
 
 17970 
 
 
 091 
 
 0-834 291-8 
 
 262-9 4-207 
 
 7 ^4 
 
 198 c 
 
 Nov. i* 
 
 
 
 
 
 
 (o) 
 
 (62) 
 
 (236g) 
 
 
 5go 
 
 0-814 2 84'7 
 
 261-3 : + 14-7 
 
 26 
 
 l.")2 
 
 182 c 
 
 
 
 
 
 
 
 
 
 
 
 5g2 
 
 0-845 
 
 242-7 
 
 260-0 2O'O 
 
 36 
 
 142 
 
 
 
 
 
 
 
 
 
 
 
 
 092 
 
 o'Sog 
 
 242-1 
 
 256-2 ig-i 
 
 9 
 
 58 
 
 438 c 
 
 304-760 
 
 
 o-g63 
 
 283-g 
 
 
 
 
 
 5i8 
 
 
 594 
 
 0-749 2g2'2 
 
 254-0 4-19-7 
 
 2 
 
 12 
 
 
 
 5g8 0-968 
 
 76-4 
 
 40-9 
 
 4-14-2 
 
 
 
 99 
 
 
 
 5 94 
 
 O'6gi 292-0 
 
 2^g-6 
 
 + 18-4 
 
 4 
 
 25 
 
 
 Nov. 2 
 
 
 
 
 
 
 (o) 
 
 (99) 
 
 (5i8) 
 
 
 594 
 
 0-680 
 
 2g5'3 
 
 248-1 
 
 4-20-5 3o 212 
 
 368 c 
 
 
 
 
 
 
 
 
 
 
 
 5g3 
 
 0-292 
 
 352-0 
 
 209-7 
 
 4-21-5 
 
 o 
 
 6 
 
 
 
 
 
 
 
 
 
 
 
 
 5g5 
 
 0-973 
 
 1 10-7 
 
 i33'4 18-8 
 
 9 
 
 37 
 
 36i c 
 
 
 
 
 
 
 
 
 
 
 
 0-753 
 
 617 
 
 
 
 
 
 23o 
 
 3o5'78g 
 
 5g8 
 
 0-887 
 
 76-2 
 
 40'9 
 
 4-14-1 
 
 3o 
 
 119 821 f 
 
 
 
 0-865 
 
 128-7 
 
 
 
 
 235 
 
 Nov. 3* 
 
 
 
 
 
 
 (3o) 
 
 (119) (821) 
 
 Oct. 26 
 
 
 
 
 
 
 (|33) 
 
 (885) 
 
 (2718) 
 
 
 
 
 
 
 
 
 
 
 
 
 -** 
 
 
 
 
 
 
 
 
 
 I 
 
 Indian 
 
 photo. The Areas of Spots and Faculic are expressed in Millionths of the Sun's visible Hemisphere. 
 
72 
 
 REDUCTION OF SOLAR PHOTOGRAPHS THROUGHOUT 1878-1881. 
 
 MEASURES of POSITIONS and AREAS of SPOTS and FACULA upon the SUN'S DISK on PHOTOGRAPUS taken in the YEAR 1881 continued. 
 
 
 
 Dis- 
 tance 
 
 
 HBLJOQRAPBIC 
 
 SPOTS. 
 
 FACDL*. 
 
 
 
 Dis- 
 tance 
 
 
 HELIOOKAI'UIC 
 
 SPOTS. 
 
 FACULZ. 
 
 Mean 
 Solar 
 Time. 
 
 No. of 
 Gronp, 
 and 
 Letter 
 for 
 Spot. 
 
 from 
 Centre 
 in 
 terms 
 of 
 Sun's 
 Radius 
 
 Position 
 Angle 
 from 
 Sun's 
 Axis. 
 
 
 
 
 Mean 
 Solar 
 Time. 
 
 No. of 
 Group, 
 and 
 Letter 
 for 
 Spot. 
 
 from 
 Centre 
 in 
 terms 
 of 
 Sun's 
 Radius 
 
 Position 
 Angle 
 from 
 Sun's 
 Axis. 
 
 
 
 
 Longi- 
 tude. 
 
 lati- 
 tude. 
 
 Area of 
 UMBRA 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 WHOLE 
 for each 
 Spot 
 (and for 
 Day), 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBRA 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 WHOLE 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 1881. 
 
 
 
 
 
 
 
 o 
 
 
 
 
 1881. 
 
 
 
 o 
 
 o 
 
 
 
 
 
 
 3o6 d 764 
 
 
 0' 9 42 
 
 296-8 
 
 
 
 
 
 1276 
 
 3i3 d 784 
 
 5g8 
 
 0-704 
 
 287-6 
 
 41-5 
 
 4-I4-5 
 
 22 
 
 72 
 
 
 
 698 
 
 0-767 
 
 74'9 
 
 4 o-g 
 
 4-14-0 
 
 22 
 
 117 
 
 H23/ 
 
 
 599 
 
 0-387 
 
 3 1 6-9 
 
 14-3 
 
 4ig-0 
 
 34 
 
 
 
 Nov. 4* 
 
 
 
 
 
 
 (22) 
 
 (l 17) 
 
 (23gg) 
 
 
 599 
 
 0-337 
 
 326-g 
 
 9' 
 
 + 194 
 
 O 
 
 63 
 
 
 
 
 
 
 
 
 
 
 
 
 600 
 
 o'2g3 
 
 6-0 
 
 356-0 
 
 420-0 
 
 
 
 i5 
 
 
 
 
 
 
 
 
 
 
 
 
 600 
 
 O-255 
 
 24-7 
 
 35i-5 
 
 416-4 
 
 o 
 
 16 
 
 
 307-998 
 
 
 0-868 
 
 242'2 
 
 
 
 
 
 7 3o 
 
 
 600 
 
 0-281 
 
 27-0 
 
 35o-i 
 
 417-5 
 
 o 
 
 i3 
 
 
 
 5g7 
 
 0-802 
 
 280-6 
 
 12 7'3 
 
 4-10-7 
 
 2 
 
 7 
 
 1770 
 
 
 600 
 
 0-274 
 
 36-6 
 
 348-1 
 
 4167 
 
 
 
 18 
 
 
 
 5g8 
 
 0-671 
 
 70-5 
 
 40-6 
 
 414'' 
 
 29 
 
 n5 
 
 
 
 60 1 
 
 0-358 
 
 133-7 
 
 342-6 
 
 I1'3 
 
 24 
 
 92 
 
 
 
 
 0-896 
 
 6i-3 
 
 
 
 
 
 179 
 
 
 60 1 
 
 '499 
 
 124-2 
 
 332-8 
 
 -i 3-4 
 
 
 
 18 
 
 
 Nov. 5 
 
 
 
 
 
 
 (3i) 
 
 (22) 
 
 (1086) 
 
 
 6o3 
 
 0-946 
 
 73-7 
 
 286-7 
 
 4 i6-5 
 
 log 
 
 38 1 
 
 1096 c 
 
 
 
 
 
 
 
 
 
 
 Nov. n* 
 
 
 
 
 
 
 ('89) 
 
 (83 1) 
 
 (1096) 
 
 308-789 
 
 
 o-g36 
 
 244-9 
 
 
 
 
 
 1221 
 
 
 
 
 
 
 
 
 
 
 
 698 
 
 0-416 
 
 62-8 
 
 4''4 
 
 4 14*3 
 
 24 
 
 104 
 
 
 
 
 
 
 
 
 
 
 
 
 
 o-g53 
 
 747 
 
 
 
 
 
 973 
 
 3i4"g4C 
 
 
 0-906 
 
 264-3 
 
 
 
 
 
 1 06 
 
 Nov. 6* 
 
 
 
 
 
 
 (24) 
 
 (I0 4 ) 
 
 (2194) 
 
 
 698 
 
 0-863 
 
 284-4 
 
 41-8 
 
 4 1 3- 9 
 
 24 
 
 97 
 
 
 
 
 
 
 
 
 
 
 
 
 5 99 
 
 o-57g 
 
 2 99 -3 
 
 14-8 
 
 4i8-g 
 
 26 
 
 i55 
 
 
 309-793 
 
 
 0-960 
 
 246-0 
 
 
 
 
 
 856 
 
 
 599 
 
 0-614 
 
 304-8 
 
 9-1 
 
 419-6 
 
 9 
 
 37 
 
 
 
 698 
 
 0-242 
 
 38-3 
 
 41-6 
 
 414-4 19 
 
 97 
 
 
 
 600 
 
 0-263 
 
 333-3 
 
 3497 
 
 416-4 
 
 4 
 
 3i 
 
 
 
 6oia 
 
 0-614 
 
 46-8 
 
 26-8 
 
 424-1 o 
 
 28 
 
 
 
 60 1 
 
 0-246 
 
 i83-o 
 
 343-4 
 
 I I'2 
 
 17 
 
 66 
 
 
 
 6oi 
 
 o-563 
 
 47'4 
 
 23-3 
 
 425-5 o 
 
 i3 
 
 
 
 601 
 
 o-3 10 
 
 161-6 
 
 334-0 
 
 -12-g 
 
 2 
 
 6 
 
 
 
 600 
 
 0-840 
 
 7 3-2 
 
 353-g 
 
 416-0 o 
 
 38 
 
 
 
 602 
 
 o-5g3 
 
 68-5 
 
 3o8-o 
 
 + '4'9 
 
 5 
 
 21 
 
 
 
 600 
 
 0-879 
 
 76-6 
 
 3 4 g-3 
 
 414-4 o 
 
 5 9 
 
 35? c 
 
 
 602 
 
 0-646 
 
 70-9 
 
 3o3-7 
 
 4i4-5 
 
 8 
 
 27 
 
 
 
 60 1 
 
 o-g3g 
 
 io3'6 
 
 342-1 
 
 i i-5 o 
 
 104 
 
 
 
 6o3 
 
 0-800 
 
 75-7 
 
 290-1 
 
 4i3-i 
 
 6 
 
 3o 
 
 
 
 601 
 
 '977 
 
 io3-8 
 
 33 4 -i 
 
 -127 
 
 o 
 
 101 
 
 6o3c 
 
 
 6o3 
 
 0-833 
 
 72-3 
 
 287-1 
 
 4i6-3 
 
 1x8 
 
 420 
 
 g63 c 
 
 Nov. 7* 
 
 
 
 
 
 
 (19) 
 
 (44) 
 
 (1816) 
 
 Nov. 12 
 
 
 
 
 
 
 ("9) 
 
 (890) 
 
 (1069) 
 
 310-764 
 
 5g8 
 
 0-208 
 
 340-1 
 
 4"'9 
 
 414-6 
 
 18 
 
 97 
 
 
 316-047 
 
 698 
 
 o - g63 
 
 283-7 
 
 4 2-3 
 
 4i3- 9 
 
 20 
 
 77 
 
 i39/ 
 
 
 600 
 
 0-706 
 
 70-9 
 
 364-0 
 
 4i5-8 
 
 o 
 
 44 
 
 
 
 604 
 
 0-929 
 
 23g-3 
 
 3r6 
 
 -27-1 
 
 23 
 
 132 
 
 
 
 600 
 
 0-760 
 
 73-i 
 
 3 4 g-i 
 
 4 1 5'o 
 
 5 
 
 48 
 
 
 
 604 
 
 o-go3 
 
 234-6 
 
 26-0 
 
 -3o-i 
 
 i5 
 
 125 
 
 i63c 
 
 
 60 1 
 
 o-83g 
 
 io6-5 
 
 342-6 
 
 -ii-8 
 
 
 
 72 
 
 
 
 5 99 
 
 0-764 
 
 2g2'5 
 
 l5'2 
 
 418-6 
 
 i3 
 
 162 
 
 
 
 60 1 
 
 o - gi2 
 
 106-8 
 
 333-7 
 
 12-9 
 
 
 
 107 
 
 607 c 
 
 
 5 99 
 
 0-722 
 
 294-3 
 
 12-1 4lg-2 
 
 o 
 
 9 
 
 
 Nov. 8* 
 
 
 
 
 
 
 (23) 
 
 (368) 
 
 (607) 
 
 
 599 
 
 o'6gg 
 
 295-9 
 
 9-8 4I9-8 
 
 i3 
 
 27 
 
 412 c 
 
 
 
 
 
 
 
 
 
 
 
 601 
 
 0-358 
 
 228-6 
 
 343-8 iro 
 
 '9 
 
 69 
 
 
 
 
 
 
 
 
 
 
 
 
 602 
 
 0-382 
 
 55-2 
 
 3og-2 ;+>5-2 
 
 7 
 
 i3 
 
 
 311-975 
 
 
 0-918 
 
 294-0 
 
 
 
 
 
 23 7 
 
 
 602 
 
 0-466 
 
 62-4 
 
 3o3'5 4-147 
 
 2 
 
 24 
 
 
 
 5g8 
 
 0-394 
 
 3oi-3 
 
 42*0 
 
 414-8 
 
 24 
 
 112 
 
 
 
 6o3 
 
 0-671 
 
 72-0 
 
 2 94' 4 
 
 4-12-5 
 
 20 
 
 65 
 
 
 
 599 
 
 o-3 1 8 
 
 26-2 
 
 I3'2 
 
 + '97 
 
 7 
 
 4 
 
 
 
 6o3 
 
 0-6 1 1 
 
 7 i-5 
 
 2gi-6 
 
 + 1 3-4 
 
 4 
 
 3g 
 
 
 
 600 
 
 o'5oo 
 
 63-6 
 
 35 4 -i 
 
 4167 
 
 ii 
 
 27 
 
 
 
 6o3 
 
 0*660 
 
 71-8 
 
 288-0 
 
 414*0 
 
 i5 
 
 34 
 
 
 
 600 
 
 0-629 
 
 64-3 
 
 352-1 
 
 4i6-i 
 
 
 
 5 
 
 
 
 6o3 
 
 0-678 
 
 68-3 
 
 287-1 
 
 4i6-6 
 
 96 
 
 422 
 
 
 
 600 
 
 0-568 
 
 67-3 
 
 348-g 
 
 + I5-3 
 
 10 
 
 47 
 
 
 
 606 
 
 0-972 
 
 66-3 
 
 261-6 
 
 4237 
 
 19 
 
 57 
 
 2l8/ 
 
 
 601 
 
 o - 66g 
 
 ui'5 
 
 342-4 
 
 11-7 
 
 22 
 
 IOO 
 
 
 
 
 0-776 
 
 62-0 
 
 
 
 
 
 472 
 
 
 60 1 
 
 0-769 
 
 iog-5 
 
 333-g 
 
 -12-6 
 
 15 
 
 64 
 
 160 c 
 
 
 
 0-879 
 
 68-3 
 
 
 
 
 
 222 
 
 
 
 0-904 
 
 65-o 
 
 
 
 
 
 67 
 
 
 
 o-g26 
 
 1 I2'2 
 
 
 
 
 
 167 
 
 Nov. 9 
 
 
 
 
 
 
 (89) 
 
 (36g) 
 
 (454) 
 
 
 
 o-g55 
 
 128-2 
 
 
 
 
 
 102 
 
 
 
 
 
 
 
 
 
 
 Nov. i3 
 
 
 
 
 
 
 (266) 
 
 (1266) 
 
 (i885) 
 
 312-656 
 
 5g8 
 
 0-614 
 
 293-8 
 
 41-6 
 
 4I4-5 
 
 20 
 
 no 
 
 
 
 
 
 
 
 
 
 
 
 
 5 99 
 
 0-276 
 
 355-2 
 
 14-1 
 
 4ig-o 
 
 1 I 
 
 46 
 
 
 316786 
 
 
 o-go7 
 
 297-9 
 
 
 
 
 
 2 7 5 
 
 
 5gg 
 
 0-281 
 
 35g'4 
 
 12-9 
 
 + '9'4 
 
 7 
 
 23 
 
 
 
 
 0-889 
 
 287-6 
 
 
 
 
 
 3 7 2 
 
 
 5gg 
 
 0-266 
 
 8-2 
 
 10-4 
 
 418-4 
 
 8 
 
 33 
 
 
 
 604 
 
 0-972 
 
 242-1 
 
 3i-6 
 
 26-3 
 
 26 
 
 i n 
 
 
 
 600 
 
 0-365 
 
 55-7 
 
 364-6 
 
 + '4'9 
 
 
 
 '7 
 
 
 
 604 
 
 
 2o6'3 
 
 24-2 
 
 3o-5 
 
 19 
 
 7' 
 
 5g8 c 
 
 
 600 
 
 0-460 
 
 6r5 
 
 348-6 
 
 4 1 5-3 
 
 7 
 
 34 
 
 
 
 699 
 
 0-867 
 
 289-8 
 
 1 6-3- 
 
 4i8-3 
 
 
 
 4 5 
 
 
 
 601 
 
 0-555 
 
 117-1 
 
 342-5 
 
 -u-g 
 
 26 
 
 9' 
 
 
 
 599 
 
 0*840 
 
 2go"6 
 
 i 4 -3 
 
 4187 
 
 o 
 
 29 
 
 6240 
 
 
 601 
 
 0-667 
 
 1 14-1 
 
 334-1 
 
 -i 3-3 
 
 o 
 
 53 
 
 
 
 599 
 
 0700 
 
 2g3-2 
 
 g-O 
 
 4ig-g 
 
 
 
 26 
 
 
 
 
 0-962 
 
 71-7 
 
 
 
 
 
 1 397 
 
 
 60 1 
 
 0-483 
 
 240-7 
 
 343-7 
 
 11-2 
 
 16 
 
 36 
 
 
 Nov. 10* 
 
 
 
 
 
 
 (79) 
 
 (407) 
 
 (1397) 
 
 
 6o3 
 
 0-428 
 
 64-7 
 
 296-1 
 
 + i3-o 
 
 o 
 
 69 
 
 
 Indian photo. The Areas of Spots and Facula: are expressed in Millionths of the Sun's visible Hemisphere. 
 
REDUCTION OF SOLAR PHOTOGRAPHS THROUGHOUT 1878-1881. 
 
 73 
 
 MEASURES of POSITIONS and AKKAS of SPOTS and FACULA upon the Sun's DISK on PHOTOORAIMIS tukon in the YEAR 1881 continued. 
 
 
 
 Dis- 
 
 
 HELIOGKAPIIIC 
 
 SPOTS. 
 
 FACUL.*. 
 
 
 
 Dis- 
 
 
 Hi i I<Miitti-iii<- 
 
 SPOTS. 
 
 FACUI..E. 
 
 Mean 
 Solar 
 Time. 
 
 No. of 
 (iroup. 
 and 
 
 Letter 
 
 for 
 Spot. 
 
 tance 
 from 
 Centre 
 in 
 
 terms 
 of 
 Sun's 
 Radius. 
 
 I'osition 
 Angle 
 from 
 Sun's 
 Axis. 
 
 
 
 
 Mean 
 Solar 
 Time. 
 
 No. of 
 Group, 
 and 
 better 
 for 
 Spot. 
 
 tance 
 from 
 Centre 
 in 
 terms 
 of 
 Sun's 
 Radius. 
 
 Position 
 Anglo 
 from 
 
 Sun's 
 Axis. 
 
 
 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 An-a of Area of 
 UMHUA \VIU>Li: 
 for each for eaeh 
 Spot Spnt 
 (and for (and for 
 Day). Day). 
 
 Area for 
 each 
 Group 
 (and for 
 
 Day). 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 ,\1 .1 i:l 
 
 UMBRA 
 for eaeh 
 Spot 
 (and for 
 Day). 
 
 Area "f 
 WHOLK 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 
 e irll 
 
 Group 
 (and for 
 Day). 
 
 1881. 
 
 
 
 
 
 o 
 
 o 
 
 
 
 
 1881. 
 
 
 
 o 
 
 o 
 
 o 
 
 
 
 
 3l6 d - 7 86 
 
 6o3 
 
 0-483 
 
 67-6 
 
 291-2 
 
 4-13-0 
 
 5 
 
 5o 
 
 
 320 d '972 
 
 6o3 
 
 0-514 
 
 2Q2'I 
 
 292-3 
 
 4-13-0 
 
 O 
 
 7 
 
 
 
 6o3 0-018 
 
 68-5 
 
 288-8 
 
 + I3-3 
 
 4 
 
 27 
 
 
 
 6o3 
 
 0-462 
 
 304'1 
 
 286-6 
 
 4- 17-0 
 
 71 
 
 326 
 
 
 
 6o3 
 
 0-557 
 
 64-2 
 
 287-0 
 
 + I6-3 
 
 53 
 
 356 
 
 
 
 6o5 
 
 0*410 
 
 287 
 
 200-8 
 
 4-23-1 
 
 5 
 
 21 
 
 
 
 6o5 
 
 o-gzg 
 
 65-8 
 
 201-1 
 
 4-23-5 
 
 
 
 58 
 
 
 
 606 
 
 0'5o3 
 
 58-o 
 
 236-7 
 
 4- i->'4 
 
 32 
 
 168 
 
 
 Nov. 14* 
 
 
 
 
 
 
 (123) 
 
 (877) 
 
 (1769) 
 
 
 606 
 
 0-533 
 
 59-9 
 
 234-9 
 
 + '7'7 
 
 8 
 
 12 
 
 
 
 
 
 
 
 
 
 
 
 
 606 
 
 0-604 
 
 60-8 
 
 229-4 
 
 4-iS-g 
 
 3o 
 
 116 
 
 
 
 
 
 
 
 
 
 
 
 
 606 
 
 0628 
 
 66-4 
 
 226-4 
 
 + 16-3 
 
 o 
 
 16 
 
 444/ 
 
 317795 
 
 
 0-920 
 
 289-6 
 
 
 
 
 
 7 88 
 
 
 607 
 
 0-575 
 
 7 3'2 
 
 229-1 
 
 + 11*4 
 
 70 
 
 2 7 5 
 
 
 
 6o3 
 
 0-245 
 
 35-1 
 
 296-7 
 
 + 14-1 
 
 8 
 
 37 
 
 
 
 607 
 
 0-694 
 
 76-5 
 
 2I9-9 
 
 4-io-g 
 
 7 
 
 40 
 
 
 
 6o3 
 
 0-247 
 
 42-4 
 
 295-2 
 
 + i3 - o 
 
 
 
 48 
 
 
 
 607 
 
 o - 6g i 
 
 81-6 
 
 219-7 
 
 + 7'4 
 
 o 
 
 8 
 
 
 
 6o3 
 
 0-291 
 
 5r5 
 
 29I-5 
 
 + 12-9 
 
 o 
 
 49 
 
 
 
 607 
 
 0-735 
 
 76-2 
 
 2i6-5 
 
 4-1 r6 
 
 1 33 
 
 488 
 
 3l7 e 
 
 
 6o3 
 
 O-323 
 
 55-2 
 
 289-3 
 
 + i3'i 
 
 
 
 18 
 
 
 
 
 0-878 
 
 67-0 
 
 
 
 
 
 480 
 
 
 6o3 
 
 0-383 
 
 5o-8 
 
 287-0 
 
 + I6-5 
 
 5i 
 
 338 
 
 
 
 
 0-924 
 
 io5'3 
 
 
 
 
 
 3i5 
 
 
 6o3 
 
 o-36o 
 
 67-2 
 
 285-4 
 
 -f-io'4 
 
 
 
 8 
 
 
 Nov. 1 8 
 
 
 
 
 
 
 (3 7 6) 
 
 (1876) 
 
 (2204) 
 
 
 6o3 
 
 0-386 
 
 57'9 
 
 285- 4 
 
 + 14-3 
 
 o 
 
 8 
 
 
 
 
 
 
 
 
 
 
 
 
 6o5 
 
 o-83i 
 
 63-g 
 
 25ri 
 
 + 22-9 
 
 o 
 
 53 
 
 
 
 
 
 
 
 
 
 
 
 
 60 1 
 
 0-972 
 
 79-1 
 
 228-6 
 
 -+-II-2 
 
 
 
 i3o 
 
 
 322-OOI 
 
 
 0-896 
 
 292*2 
 
 
 
 
 
 222 
 
 
 606 
 
 0-986 
 
 
 224-6 
 
 + 16-3 
 
 o 
 
 9 
 
 14140 
 
 
 
 0-725 
 
 3i8-2 
 
 
 
 
 
 lOQ 
 
 Nov. i5 
 
 
 
 
 
 
 (59) 
 
 (780) 
 
 (2202) 
 
 
 6o3 
 
 0-778 
 
 285-8 
 
 2997 
 
 4-13-5 
 
 27 
 
 1 06 
 
 go c 
 
 
 
 
 
 
 
 
 
 
 
 6o3 
 
 0-696 
 
 287-1 
 
 2g2-5 
 
 + I3-3 
 
 o 
 
 6 
 
 2g5 c 
 
 3 18-635 
 
 
 0-974 
 
 288-3 
 
 
 
 
 
 676 
 
 
 6o3 
 
 0-640 
 
 294-6 
 
 286-9 
 
 4-17-1 
 
 60 
 
 2 7 8 
 
 148 np 
 
 
 
 0-880 
 
 285-3 
 
 
 
 
 
 424 
 
 
 606 
 
 o-33g 
 
 36-6 
 
 23 7 - 4 
 
 + 177 
 
 4 3 
 
 I 7 2 
 
 
 
 6o3 
 
 0-2 1 1 
 
 344-5 
 
 297-2 
 
 + 14-1 
 
 32 
 
 80 
 
 
 
 606 
 
 0-363 
 
 4 r6 
 
 235-O 
 
 4-177 
 
 o 
 
 16 
 
 
 
 6o3 
 
 0-184 
 
 u-5 
 
 291-8 
 
 + I2-8 
 
 16 
 
 5 4 
 
 
 
 606 
 
 0-433 
 
 48-1 
 
 229-8 
 
 + 187 
 
 i3 
 
 60 
 
 
 
 6o3 
 
 0-272 
 
 24-8 
 
 287-1 
 
 + 16-6 
 
 55 
 
 3 4 i 
 
 
 
 606 
 
 0-445 
 
 56-i 
 
 227-1 
 
 4- 16-2 
 
 o 
 
 9 
 
 
 
 6o5 
 
 0-721 
 
 60-0 
 
 25i"4 
 
 4-22-8 
 
 1 1 
 
 4 5 
 
 
 
 607 
 
 o-38g 
 
 64-4 
 
 228-7 
 
 4-U-6 
 
 48 
 
 22 7 
 
 
 
 606 
 
 0-881 
 
 70-6 
 
 233-1 
 
 + 18-2 
 
 33 
 
 108 
 
 32 7 c 
 
 
 607 
 
 o'o55 
 
 72-5 
 
 217-1 
 
 4-11-4 
 
 102 
 
 442 
 
 
 
 606 
 
 0-928 
 
 73-5 
 
 226-2 
 
 4-16-2 
 
 
 
 42 
 
 832 c 
 
 
 
 0-842 
 
 58-5 
 
 
 
 
 
 35g 
 
 
 6o 7 
 
 o-gio 
 
 71-2 
 
 228-6 
 
 + 1 0-8 
 
 55 
 
 224 
 
 
 
 
 0-845 
 
 108-8 
 
 
 
 
 
 47 
 
 
 6o 7 
 
 0-976 
 
 79-5 
 
 2 1 6-5 
 
 4-10-7 
 
 21 
 
 211 
 
 1428 c 
 
 Nov. 19 
 
 
 
 
 
 
 (2 9 3) 
 
 (i3i6) 
 
 (i3 7 o) 
 
 Nov. i6 
 
 
 
 
 
 
 (223) 
 
 (uo5) 
 
 (368 7 ) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 323-036 
 
 6o3 
 
 o-go3 
 
 283-6 
 
 3oo-o 
 
 + I3-1 
 
 49 
 
 121 
 
 379 / 
 
 3ig-g6 7 
 
 
 0-971 
 
 285-2 
 
 
 
 
 
 585 
 
 
 6o3 
 
 0-791 
 
 290-1 
 
 286-6 
 
 4-17-0 
 
 67 
 
 343 
 
 745 
 
 
 601 
 
 o-g3i 
 
 256'o 
 
 343-6- 
 
 I2-I 
 
 O 
 
 9 
 
 4 83 / 
 
 
 606 
 
 0-277 
 
 354-0 
 
 237-6 
 
 + 17-9 
 
 3i 
 
 1 35 
 
 
 
 6o3 
 
 0-424 
 
 2 997 
 
 298-6 
 
 + 14-2 
 
 34 
 
 u3 
 
 
 
 606 
 
 0'302 
 
 17-8 
 
 23o - 4 
 
 4-18-6 
 
 9 
 
 26 
 
 
 
 6o3 
 
 0-377 
 
 3o3-3 
 
 295-2 
 
 + 14-1 
 
 
 
 3 
 
 
 
 607 
 
 0-286 
 
 3r8 
 
 226-9 
 
 4-iS-g 
 
 o 
 
 3 
 
 
 
 6o3 
 
 O'o i-y 
 
 304-9 
 
 291-9 
 
 + 127 
 
 4 
 
 34 
 
 
 
 607 
 
 O'2O5 
 
 37'9 
 
 228-6 
 
 4-11-2 
 
 64 
 
 2JI 
 
 
 
 6o3 
 
 o-3o 325-5 
 
 286-8 
 
 + 16-9 
 
 75 
 
 326 
 
 
 
 607 
 
 0-269 
 
 62-6 
 
 222-0 
 
 4- 9' 
 
 4 
 
 16 
 
 
 
 6o5 
 
 o-53o 
 
 47'9 
 
 25l'2 
 
 + 22-9 
 
 4 
 
 4* 
 
 
 
 607 
 
 0-357 
 
 62-3 
 
 217-2 
 
 4-11-4 
 
 119 
 
 479 
 
 
 
 606 
 606 
 
 0-672 
 0713 
 
 66-9 
 67-6 
 
 236-3 
 
 232'g 
 
 + 17-0 
 
 + 17-4 
 
 34 
 "4 
 
 'I! 
 
 
 Nov. 20 
 
 609 
 
 0-843 
 
 108-2 
 
 I 80-5 
 
 -14-1 
 
 8 
 (35i) 
 
 H 
 
 (i3 9 8) 
 
 118 
 (1242) 
 
 
 606 
 
 749 
 
 66-3 
 
 23o-i 
 
 4-19-1 
 
 33 
 
 1 53 
 
 
 
 
 
 
 
 
 
 
 
 
 606 
 
 0-780 
 
 707 
 
 226-5 
 
 4-16-4 
 
 5 
 
 i3 
 
 226 c 
 
 323-g5o 
 
 6o3 
 
 0-972 
 
 282-6 
 
 3oo-i 
 
 + 127 
 
 '9 
 
 9* 
 
 
 
 6o 7 
 
 0-750 
 
 77-2 
 
 228-4 
 
 
 48 
 
 279 
 
 
 
 6o3 
 
 0-894 
 
 287-9 
 
 286-3 
 
 4-16-8 
 
 5 4 
 
 265 
 
 68 \p 
 
 
 607 
 
 o-8o3 
 
 79-2 
 
 223-3 
 
 4-iQ-o 
 
 10 
 
 4 
 
 
 
 606 
 
 o-356 
 
 320-3 
 
 237-6 
 
 + 17-6 
 
 17 
 
 125 
 
 
 
 607 
 
 0-833 
 
 82-7 
 
 220-2 
 
 + 7'4 
 
 4 
 
 '7 
 
 
 
 606 
 
 0-291 
 
 340-5 
 
 2297 
 
 + 177 
 
 7 
 
 3i 
 
 
 
 607 
 
 0-865 
 
 78-0 
 
 2l6'9 
 
 -f 1 1-5 
 
 85 
 
 441 
 
 3g8 c 
 
 
 607 
 
 0-181 
 
 33 1 -o 
 
 229-0 
 
 4-io-g 
 
 25 
 
 1 55 
 
 
 
 
 0-755 
 
 120-3 
 
 
 
 
 
 '9' 
 
 
 607 
 
 0-177 
 
 3 4 5-i 
 
 226-5 
 
 4-H-6 
 
 3 
 
 39 
 
 
 
 
 0-822 
 
 53-5 
 
 
 
 
 
 23 4 
 
 
 607 
 
 0-140 
 
 O'l 
 
 223-9 
 
 + 9'9 
 
 3o 
 
 7 3 
 
 
 
 
 0-865 
 
 71-0 
 
 
 
 
 
 414 
 
 
 607 
 
 o-io3 
 
 ,67 
 
 222-2 
 
 + 7'5 
 
 6 
 
 26 
 
 
 Nov. I 7 
 
 
 
 
 
 
 (36o) 
 
 (723) 
 
 (2 53 1) 
 
 
 607 
 
 0-187 
 
 3o-g 
 
 218-3 
 
 4- 1 ro 
 
 i5o 
 
 832 
 
 
 
 
 
 
 
 
 
 
 
 
 610 
 
 0-348 
 
 44-0 
 
 209-2 
 
 4-16-1 
 
 
 
 3 
 
 
 320-g 7 2 
 
 
 0-973 
 
 256-2 
 
 
 
 
 
 363 
 
 
 611 
 
 0-526 
 
 48-6 
 
 198-8 
 
 4-22-0 
 
 o 
 
 i3 
 
 
 
 
 0-884 
 
 igo-5 
 
 
 
 
 
 22 
 
 
 609 
 
 0-731 
 
 I i3-i 
 
 I79'9 
 
 15'3 
 
 
 
 i5 
 
 
 
 
 0-877 
 
 2o3-3 
 
 
 
 
 
 5o 
 
 
 
 0-942 
 
 120-3 
 
 
 
 
 
 126 
 
 
 
 0-778 
 
 2 977 
 
 
 
 
 
 213 
 
 
 
 0-943 63'2 
 
 
 
 
 
 206 
 
 
 6o3 
 
 0-606 
 
 290-4 
 
 298-8 
 
 + i3'9 
 
 20 
 
 99 
 
 
 Nov. 21 
 
 
 
 
 
 
 (3,.) 
 
 (1669) 
 
 (1016) 
 
 * Indian photo. The Areas of Spots and Faculte are expressed in Millionth! of the Sun's visible Hemisphere. t Melbourne photo. 
 
 K 
 
OF SOLAR PHOTOGRAPHS THROUGHOUT 1878-1881. 
 
 MEASTJHES of POSITIONS and AUEAS of SPOTS and FACUL.E upon the SUN'S DISK on PHOTOGRAPHS taken in the YEAR 1881 continued. 
 
 
 
 Dis- 
 
 
 HEI.IOORAPHIC 
 
 SPOTS. 
 
 FACUL-E. 
 
 
 
 Dis- 
 
 
 HELIOORiPHIC 
 
 SPOTSi 
 
 FACUI^E. 
 
 Mean 
 Solar 
 Time. 
 
 No. of 
 Group, 
 and 
 Letter 
 for 
 Spot. 
 
 tance 
 from 
 Centre 
 in 
 terms 
 of 
 Sun's 
 Radius. 
 
 Position 
 Angle 
 from 
 Sun's 
 Axis. 
 
 
 
 
 Mean 
 Solar 
 Time. 
 
 No. of 
 Group, 
 and 
 Letter 
 for 
 Spot. 
 
 tance 
 from 
 Centre 
 in 
 terms 
 of 
 Sun's 
 Radius. 
 
 Position 
 Angle 
 from 
 Sun's 
 Axis. 
 
 
 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBRA 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 WHOLE 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBRA 
 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area of 
 WHOLE 
 for each 
 Spot 
 (and for 
 Day). 
 
 Area for 
 each 
 Group 
 (and for 
 Day). 
 
 I88l. 
 
 
 
 o 
 
 o 
 
 o 
 
 
 
 
 1881. 
 
 
 
 o 
 
 
 
 
 
 
 
 
 324*793 
 
 6o3 
 
 0-962 
 
 287-2 
 
 286-5 
 
 + 17*0 
 
 5l 
 
 186 
 
 1 354C 
 
 33o d -o5o 
 
 
 0-91 1 
 
 3o6-o 
 
 
 
 
 
 141 
 
 
 606 
 
 0-487 
 
 304-4 
 
 237-6 
 
 + 17-5 
 
 18 
 
 5 9 
 
 
 
 
 0-848 
 
 253'7 
 
 
 
 
 
 118 
 
 
 606 
 
 0-382 
 
 3l7'6 
 
 228-9 
 
 + 18-0 
 
 7 
 
 47 
 
 
 
 607 
 
 0' 9 7I 
 
 27 9 -g 
 
 2ig-3 
 
 4 g-8 
 
 134 
 
 6 9 3 
 
 756 nf 
 
 
 607 
 
 o-3 1 5 
 
 299-3 
 
 229-0 
 
 4-IQ-5 
 
 3i 
 
 140 
 
 
 
 6og 
 
 0-682 
 
 247-8 
 
 i83-g 
 
 -14-1 
 
 2 
 
 '4 
 
 igSp 
 
 
 607 
 
 0-260 
 
 3o5'4 
 
 225'2 
 
 -f-io-3 
 
 .6 
 
 81 
 
 
 
 6i3 
 
 o-g65 
 
 i io- 1 
 
 70-3 
 
 ig-o 
 
 8 
 
 20 
 
 
 
 607 
 
 0*191 
 
 3oo-o 
 
 222-3 
 
 4 7*1 
 
 5 
 
 17 
 
 
 
 6,4 
 
 o-g 9 2 
 
 iog-g 
 
 6,7 
 
 ig-6 
 
 16 
 
 322 
 
 402 c 
 
 
 607 
 
 0-192 
 
 326-8 
 
 2l8'9 
 
 -|-io-g 
 
 io3 
 
 756 
 
 
 
 
 0-649 
 
 62-8 
 
 
 
 
 
 112 
 
 
 607 
 
 0-220 
 
 33g-8 
 
 2I7-3 
 
 + I3-5 
 
 6 
 
 32 
 
 
 
 
 0-866 
 
 62-0 
 
 
 
 
 
 io5 
 
 
 609 
 
 O'6o3 
 
 119-4 
 
 '79*9 
 
 -i5 7 
 
 4 
 
 ll 
 
 
 Nov. 27 
 
 
 
 
 
 
 (160) 
 
 (1049) 
 
 (i832) 
 
 Nov. 22* 
 
 
 
 
 
 
 (241) 
 
 (i336) 
 
 (35 4 ) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 33o-g54 
 
 
 o-g3o 
 
 255-8 
 
 
 
 
 
 93 
 
 326-004 
 
 
 0-899 
 
 293-8 
 
 
 
 
 
 225 
 
 
 6i5 
 
 0-929 
 
 255-o 
 
 198*7 
 
 -i3-5 
 
 o 
 
 10 
 
 
 
 
 0-898 
 
 238-8 
 
 
 
 
 
 92 
 
 
 6og 
 
 o-8o5 
 
 25i-8 
 
 183-4 
 
 i3-g 
 
 5 
 
 16 
 
 3790 
 
 
 606 
 
 0*690 
 
 2g3-g 
 
 238-o 
 
 + 17*4 
 
 17 
 
 72 
 
 
 
 616 
 
 0-747 
 
 56-5 
 
 88-4 
 
 425-o 
 
 5 
 
 18 
 
 
 
 606 
 
 0-602 
 
 296-6 
 
 23o-g 
 
 -1-16-9 
 
 9 
 
 in 
 
 
 
 616 
 
 0777 
 
 58-8 
 
 8 4 -g 
 
 424-3 
 
 3 
 
 16 
 
 97 c 
 
 
 607 
 
 0-526 
 
 287-3 
 
 227-4 
 
 -r-io-3 
 
 28 
 
 248 
 
 
 
 6i3 
 
 0-891 
 
 I I 2*2 
 
 7o*9 
 
 -19-1 
 
 16 
 
 4 8 
 
 
 
 607 
 
 0-447 
 
 283-8 
 
 222-6 
 
 + 7-5 
 
 4 
 
 7 
 
 
 
 614 
 
 o-g55 
 
 I I II 
 
 60-6 
 
 -'9*9 
 
 143 
 
 60 1 
 
 482 c 
 
 
 607 
 
 0-412 
 
 294*9 
 
 219*1 
 
 + 11*4 
 
 171 
 
 972 
 
 
 Nov. 28 
 
 
 
 
 
 
 072) 
 
 (709) 
 
 (io5i) 
 
 
 612 
 
 o-2o3 
 
 4-2 
 
 I95-9 
 
 + I3-2 
 
 o 
 
 6 
 
 
 
 
 
 
 
 
 
 
 
 
 609 
 
 o'3gi 
 
 i3g-g 
 
 lSl'7 
 
 1 5-8 
 
 '7 
 
 95 
 
 
 
 
 
 
 
 
 
 
 
 
 
 0-864 
 
 78-2 
 
 
 
 
 
 116 
 
 331-995 
 
 
 0-909 
 
 252-0 
 
 
 
 
 
 400 
 
 
 
 0*922 
 
 1 1 3'7 
 
 
 
 
 
 302 
 
 
 617 
 
 0-535 
 
 70-8 
 
 87-0 
 
 4io-8 
 
 5 
 
 12 
 
 
 Nov. 23 
 
 
 
 
 
 
 (246) 
 
 (i5n) 
 
 (735) 
 
 
 616 
 
 o-5 9 7 
 
 45-8 
 
 897 
 
 425-2 
 
 10 
 
 20 
 
 
 
 
 
 
 
 
 
 
 
 
 616 
 
 o-63g 
 
 5i-i 
 
 84'9 
 
 4H' 2 
 
 2 
 
 5 
 
 
 026784 
 
 
 0-877 
 
 2g6-i 
 
 
 
 
 
 6 4 5 
 
 
 6i3 
 
 0-763 
 
 1 16-1 
 
 71-6 
 
 ig'o 
 
 i3 
 
 53 
 
 
 
 606 
 
 0-796 
 
 290-9 
 
 237-5 
 
 + 17*4 
 
 i3 
 
 4 
 
 
 
 6i3 
 
 0790 
 
 114-1 
 
 68-7 
 
 -i 8-3 
 
 4 
 
 18 
 
 
 
 606 
 
 0-752 
 
 2gro 
 
 233-4 
 
 + 16-6 
 
 16 
 
 94 
 
 
 
 614 
 
 0-860 
 
 1 14-0 
 
 6r3 
 
 20'O 
 
 87 
 
 711 
 
 
 
 606 
 
 0-687 
 
 2g3-6 
 
 227-5 
 
 + 17-1 
 
 9 
 
 21 
 
 
 
 6,4 
 
 0-908 
 
 iog-6 
 
 54-4 
 
 -'7*4 
 
 6 
 
 '9 
 
 7 5 IC 
 
 
 607 
 
 0-683 
 
 284-2 
 
 228-7 
 
 + 10-7 
 
 21 
 
 123 
 
 
 
 
 0-820 
 
 62-3 
 
 
 
 
 
 53 
 
 
 607 
 
 o-65o 
 
 282-8 
 
 226-3 
 
 + 9'4 
 
 12 
 
 29 
 
 
 Nov. 29 
 
 
 
 
 
 
 (127) 
 
 (838) 
 
 (1204) 
 
 
 607 
 
 0-623 
 
 286-6 
 
 223-g 
 
 + n*4 
 
 O 
 
 38 
 
 
 
 
 
 
 
 
 
 
 
 
 607 
 
 0-542 
 
 287-4 
 
 218-1 
 
 + io-6 
 
 1 08 
 
 742 
 
 
 
 
 
 
 
 
 
 
 
 
 609 
 
 0-294 
 
 174-3 
 
 184-8 
 
 -i 5-4 
 
 3 
 
 33 
 
 
 332-6o8 
 
 614 
 
 0-788 
 
 1 1 5-5 
 
 6 ro 
 
 ig-3 
 
 i5i 
 
 428 
 
 
 
 609 
 
 o-3og 
 
 165-4 
 
 1 8 r 9 
 
 i5-g 
 
 o 
 
 IO 
 
 
 Nov. 3ot 
 
 
 
 
 
 
 (i5i) 
 
 (428) 
 
 
 
 609 
 
 0-322 
 
 i5g-o 
 
 179-6 
 
 i5 - g 
 
 7 
 
 4' 
 
 
 
 
 
 
 
 
 
 
 
 Nov. 24* 
 
 
 
 
 
 
 ('89) 
 
 (1172) 
 
 (6 4 5) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 333-783 
 
 614 
 
 0-629 
 
 123-3 
 
 6o-5 
 
 -97 
 
 86 
 
 49 1 
 
 
 327798 
 
 
 0-821 
 
 281-7 
 
 
 
 
 
 544 
 
 
 619 
 
 o-656 
 
 64*9 
 
 3-o 
 
 424-1 
 
 o 
 
 94 
 
 812 c 
 
 
 606 
 
 0*91 3 
 
 288-4 
 
 238-2 
 
 + *7'4 
 
 
 
 76 
 
 
 
 
 o-g56 
 
 122-7 
 
 
 
 
 
 996 
 
 
 606 
 
 0-889 
 
 288-3 
 
 234-8 
 
 + 16-8 
 
 17 
 
 196 
 
 865 c 
 
 Dec. i* 
 
 
 
 
 
 
 (86) 
 
 (585) 
 
 (1808) 
 
 
 606 
 
 0-834 
 
 289-7 
 
 128-2 
 
 + 17*1 
 
 n 
 
 112 
 
 
 
 
 
 
 
 
 
 
 
 
 607 
 
 0-836 
 
 281-8 
 
 229-3 
 
 -f-io-6 
 
 17 
 
 57 
 
 
 
 
 
 
 
 
 
 
 
 
 607 
 
 0-814 
 
 280-4 
 
 227-2 
 
 4 9'* 
 
 o 
 
 27 
 
 
 
 
 
 
 
 
 
 
 
 
 607 
 
 0-798 
 
 282-6 
 
 225-5 
 
 4io-q 
 
 o 
 
 77 
 
 
 334-904 
 
 
 0-940 
 
 3oo'7 
 
 
 
 
 
 171 
 
 
 607 
 
 0-717 
 
 283-4 
 
 218-2 
 
 4io-6 
 
 145 
 
 558 
 
 
 
 618 
 
 0-8 1 3 
 
 246-0 
 
 i3ri 19*0 
 
 44 
 
 76 
 
 
 
 609 
 
 0-326 
 
 2oo"5 
 
 180-0 
 
 -i 6-3 
 
 
 
 5 4 
 
 
 
 618 
 
 0*778 
 
 245-4 
 
 127-6 
 
 i 8-5 
 
 26 
 
 5 9 
 
 352 c 
 
 Nov. 25* 
 
 
 
 
 
 
 (190) 
 
 (ii5 7 ) 
 
 (1409) 
 
 
 614 
 
 0-452 
 
 142-8 
 
 62-6 
 
 20-6 
 
 27 
 
 IOO 
 
 
 
 
 
 
 
 
 
 
 
 
 614 
 
 0-466 
 
 136-7 
 
 5g-8 
 
 -ig-3 
 
 143 
 
 4'9 
 
 
 328-g38 
 
 
 o-go3 
 
 284-7 
 
 
 
 
 
 853 
 
 
 619 
 
 o-83g 
 
 60-2 
 
 26-3 
 
 424-9 
 
 5 4 
 
 25 7 
 
 
 
 
 0-875 
 
 67-9 
 
 
 
 
 
 200 
 
 
 619 
 
 0-867 
 
 5g"5 
 
 23-3 
 
 + 26-3 
 
 25 
 
 122 
 
 
 
 606 
 
 0-977 
 
 286-7 
 
 235-4 
 
 4i6-6 
 
 101 
 
 58o 
 
 
 
 6ig 
 
 o-863 
 
 62-3 
 
 23-o 
 
 423-g 
 
 37 
 
 1 33 
 
 
 
 606 
 
 O"g53 
 
 288-1 
 
 229-8 
 
 417-6 
 
 i5 
 
 112 
 
 
 
 619 
 
 o-goo 
 
 6o-5 
 
 187 
 
 426-5 
 
 33 
 
 1 53 
 
 
 
 607 
 
 '947 
 
 280-1 
 
 229-1 
 
 + 9'9 
 
 20 
 
 78 
 
 
 
 619 
 
 o - g3i 
 
 6r8 
 
 1 3-6 
 
 426-3 
 
 
 
 "4 
 
 55 4 c 
 
 
 607 
 
 0-873 
 
 280-9 
 
 218-4 
 
 4 io- 1 
 
 '77 
 
 565 
 
 
 
 
 0-888 
 
 125-3 
 
 
 
 
 
 35g 
 
 Nov. 26 
 
 609 
 
 0-467 
 
 229-5 
 
 79*7 
 
 -i 6-5 
 
 5 
 
 (3i8) 
 
 39 
 0374) 
 
 (io53) 
 
 Dec. 2 
 
 
 o-g34 
 
 70-7 
 
 
 
 (38 9 ) 
 
 (i 333) 
 
 207 
 (1643) 
 
 * Indian photo. The Areas of Spots and Faculae are expressed in Millionths of the Sun's visible Hemisphere. t Melbourne photo. 
 
REDUCTION OF SOLAR PHOTOGRAPHS THROUGHOUT 1878-1881. 
 
 75 
 
 MEASURES of POSITIONS and AREAS of SPOTS aud FACUL.B upon the SUN'S DISK on PHOTOGUAPIIS taken in the YKAB 1881 continued. 
 
 
 
 Dis- 
 
 
 HEUOOKAPHIC 
 
 SPOT*. 
 
 FACUL.* 
 
 
 
 Dis- 
 
 
 HKLIOOKAPHIO 
 
 SPOTS. 
 
 FACULJE. 
 
 Mean 
 Solar 
 Time. 
 
 No. oi 
 Group 
 and 
 Letter 
 for 
 Spot. 
 
 tance 
 from 
 Centre 
 in 
 terms 
 of 
 Sun's 
 
 Positior 
 Angle 
 from 
 
 Sun's 
 Axis. 
 
 
 
 
 Mean 
 Solar 
 Time. 
 
 No. of 
 Group 
 and 
 Letter 
 for 
 Spot. 
 
 tance 
 from 
 Centre 
 in 
 terms 
 of 
 Sun's 
 
 1'ositioi 
 Angle 
 from 
 
 Sun's 
 Axis. 
 
 
 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 DMB&A 
 
 for each 
 Spot 
 (and for 
 
 Area of 
 \VIIOI.K 
 for each 
 Spot 
 (and for 
 
 Area for 
 each 
 Group 
 (and for 
 
 T-k__\ 
 
 t 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 (7UB&A 
 
 for each 
 Spot 
 (and (or 
 
 Arra of 
 \VHOI, K 
 for each 
 Spot 
 (and for 
 
 A rea for 
 each 
 Group 
 (aid for 
 
 1 I i . i 
 
 
 
 Radius 
 
 
 
 
 Day). 
 
 Day). 
 
 Day). 
 
 
 
 Radius 
 
 
 
 
 Day). 
 
 Day). 
 
 Day). 
 
 l88l. 
 
 
 
 o 
 
 
 
 o 
 
 
 
 
 1881. 
 
 
 
 o 
 
 
 
 o 
 
 
 
 
 335-9 7 6 
 
 618 
 
 0-916 
 
 248-3 
 
 129-8 
 
 -'97 
 
 98 
 
 512 
 
 525 c 
 
 340 d 78o 
 
 614 
 
 0-858 
 
 248-2 
 
 5g-i 
 
 -187 
 
 60 
 
 27' 
 
 
 
 6i3 
 
 0-349 
 
 '947 
 
 70-8 
 
 -ig-3 
 
 
 
 7 
 
 
 
 6lg 
 
 0-625 
 
 3l6'7 
 
 307 
 
 + 267 
 
 o 
 
 20 
 
 
 
 614 
 
 0-364 
 
 I73-6 
 
 62-9 
 
 20-8 
 
 o 
 
 20 
 
 
 
 619 
 
 o'5g5 
 
 3i5-i 29-5 
 
 + 24-5 
 
 3 9 
 
 233 
 
 
 
 614 
 
 O-355 
 
 164-3 
 
 5g-6 
 
 iq-6 
 
 io3 
 
 33 1 
 
 
 
 6lg 
 
 o'56g 
 
 3i8-5 
 
 26-6 
 
 + 24-9 
 
 38 
 
 190 
 
 
 
 614 
 
 0-413 
 
 143-7 
 
 5o- 4 
 
 19-0 
 
 
 
 24 
 
 
 
 6ig 
 
 C'520 
 
 326-g 
 
 20-4 
 
 + 25-5 
 
 27 
 
 ,46 
 
 
 
 619 
 
 0-708 1 ."4-4 
 
 26-3 
 
 4-24-5 
 
 89 
 
 55 7 
 
 
 Dec. 8* 
 
 
 
 
 
 
 (164) 
 
 (860) 
 
 
 
 6ig 
 
 0768 56-2 
 
 2O'6 
 
 + 20-4 
 
 25 
 
 23g 
 
 601 c 
 
 
 
 
 
 
 
 
 
 
 
 
 0*704 , i32-o 
 
 
 
 
 
 32g 
 
 
 
 
 
 
 
 
 
 
 
 
 0-892 
 
 70-8 
 
 
 
 
 
 33o 
 
 341791 
 
 614 
 
 o-g5o 
 
 25o'2 
 
 59'4 
 
 18-9 
 
 44 
 
 138 
 
 763 nf 
 
 Dec. 3 
 
 
 
 
 
 
 (3'5) 
 
 (1690) 
 
 (1788) 
 
 
 6ig 
 
 0-721 
 
 3o6-o 
 
 28-6 
 
 + 247 
 
 63 
 
 247 
 
 
 
 
 
 
 
 
 
 
 
 
 619 
 
 o - 6go 
 
 3o8-6 
 
 25-2 
 
 + 25-1 
 
 o 
 
 5 4 
 
 
 
 
 
 
 
 
 
 
 
 
 619 
 
 0-642 
 
 3i3-o 
 
 20'0 
 
 + 25-5 
 
 
 
 7 
 
 
 336-666 
 
 618 0-976 
 
 249-5 
 
 133-5 
 
 -ig-g 
 
 o 
 
 282 
 
 
 
 625 
 
 0-914 
 
 71-8 
 
 282-7 
 
 + 16-6 
 
 16 
 
 73 
 
 566 c 
 
 
 618 
 
 0-954 
 
 249-9 
 
 127-4 
 
 Ig'O 
 
 5 
 
 iqo 
 
 1178 c 
 
 
 621 
 
 '97 8 
 
 61-8 
 
 2727 
 
 + 27-5 
 
 o 
 
 66 
 
 8o5c 
 
 
 620 
 
 0-470 
 
 320-1 
 
 7 5-i 
 
 + 21-2 
 
 o 
 
 35 
 
 . 
 
 Dec. g 
 
 
 
 
 
 
 
 
 
 6)4 0-340 
 
 188-0 
 
 5g-2 
 
 '9'4 
 
 96 
 
 332 
 
 
 
 
 
 
 
 
 (H3) (645) 
 
 (a 134) 
 
 
 6iq O'6ll 
 
 46-9 
 
 27-0 
 
 + 24-8 
 
 75 
 
 5O2 
 
 
 
 
 
 
 
 
 
 
 
 619 0-634 
 
 52 7 
 
 23-3 
 
 4-22-7 
 
 o 
 
 10 
 
 
 342-831 
 
 
 o-g63 
 
 249-5 
 
 
 
 
 880 
 
 
 619 
 
 O'66q 
 
 49' 
 
 22'2 
 
 + 26-1 
 
 10 
 
 69 
 
 
 
 619 
 
 0-845 
 
 2997 
 
 28-5 
 
 4-24-3 
 
 38 145 
 
 
 
 619 
 
 O'6q4 
 
 52-1 
 
 ig-i 
 
 + 20-4 
 
 i5 
 
 82 
 
 
 
 619 
 
 0-817 
 
 3oo-g 
 
 z5-i +24'3 
 
 3 27 
 
 
 
 619 
 
 0-720 
 
 54-2 
 
 i6-3 
 
 4-20-0 
 
 
 
 18 
 
 261 / 
 
 
 619 
 
 0-782 
 
 304-5 
 
 20-5 4 25-8 
 
 25 
 
 
 
 
 0-901 
 
 68-7 
 
 
 
 
 
 802 
 
 
 619 
 
 0-741 
 
 3067 
 
 16-1 +20-8 
 
 o 19 
 
 
 
 
 0-960 
 
 104-4 
 
 
 
 
 
 6o3 
 
 
 619 
 
 0-71 1 
 
 3og-6 
 
 i 2*6 +26-4 
 
 o 
 
 1 1 
 
 881 c 
 
 Dec. 4* 
 
 
 
 
 
 
 ('9') 
 
 (i525) 
 
 (2844) 
 
 
 622 
 
 o-3gi 
 
 3i6'o 
 
 35 r3 4-i5'7 
 
 8 
 
 25 
 
 
 
 
 
 
 
 
 
 
 
 
 622 
 
 0-35 1 
 
 324-0 
 
 347-3 -|- i5-g 
 
 o 
 
 i5 
 
 
 
 
 
 
 
 
 
 
 
 
 625 
 
 0-8 1 8 
 
 69-1 
 
 282-3 !+i6-6 
 
 1 1 
 
 4 
 
 297 c 
 
 337780 
 
 
 0-940 
 
 286-q 
 
 
 
 
 
 94 
 
 
 621 
 
 0-917 
 
 59-7 
 
 272-2 
 
 4-27-3 
 
 8 
 
 128 
 
 697 c 
 
 
 620 
 
 0-641 
 
 302-6 
 
 76-6 
 
 + 2O- 2 
 
 o 
 
 20 
 
 
 
 
 '974 
 
 104-9 
 
 
 
 
 
 744 
 
 
 620 
 
 0-602 
 
 307-3 
 
 72-4 
 
 + 21-4 
 
 
 
 29 
 
 
 Dec. 10* 
 
 
 
 
 
 
 (68) 
 
 (435) 
 
 (3499) 
 
 
 614 
 
 0-438 
 
 220-4 
 
 5g-o 
 
 -ig-3 
 
 104 
 
 269 
 
 
 
 
 
 
 
 
 
 
 
 
 619 
 
 0-475 
 
 28-3 
 
 2 7 -3 
 
 + 24-7 
 
 85 
 
 532 
 
 
 343728 
 
 
 0-86 1 
 
 234-3 
 
 
 
 
 
 610 
 
 
 619 
 
 0-526 
 
 3 4 - 7 
 
 22-3 
 
 + 25-6 
 
 4 
 
 55 
 
 
 
 619 
 
 0-926 
 
 296-1 
 
 28-2 
 
 4-237 
 
 4' 
 
 1 4 3 
 
 I+54/ 
 
 
 619 
 
 o-5o8 
 
 37-6 
 
 2 I '9 
 
 + 23-7 
 
 o 
 
 18 
 
 
 
 622 
 
 0-043 
 
 298-8 
 
 352'5+i4-6 
 
 9 
 
 22 
 
 
 
 619 
 
 0-564 
 
 3g-9 
 
 1 8-0 
 
 + 25-6 
 
 9 
 
 i5i 
 
 
 
 622 
 
 0-467 
 
 2g8- 7 
 
 347'g +12-3 
 
 
 
 18 
 
 
 
 
 0-870 
 
 1067 
 
 
 
 
 
 864 
 
 
 622 
 
 0-434 
 
 3o3-8 
 
 344'g 4-13-3 
 
 o 
 
 '9 
 
 
 Dec. 5* 
 
 
 
 
 
 
 (202) 
 
 ('074) 
 
 (1768) 
 
 
 625 
 
 0*694 
 
 60-0 
 
 282-4 
 
 4-16-5 
 
 i3 
 
 5o 
 
 
 
 
 
 
 
 
 
 
 
 
 621 
 
 0-838 
 
 56-6 
 
 271-6 
 
 4-27-0 
 
 '4 
 
 7' 
 
 835/ 
 
 338 d -g3o 
 
 620 
 
 0-762 
 
 298-1 
 
 72-4 
 
 + 2o-g 
 
 5 
 
 10 
 
 297 up 
 
 
 6zja 
 
 0-881 
 
 1 06-0 
 
 262-5 
 
 -14-4 
 
 
 
 33" 
 
 490 
 
 
 614 
 
 0-637 
 
 235-3 
 
 60-6 
 
 -21-3 
 
 7 
 
 38 
 
 
 
 627 
 
 0-973 
 
 63-o 
 
 248-7 
 
 4-26-0 
 
 i3 
 
 166 
 
 88 9 / 
 
 
 614 
 
 0-609 
 
 207-9 
 
 5g'4 
 
 i8-g 
 
 60 
 
 156 
 
 620 np 
 
 Dec. 11* 
 
 
 
 
 
 
 (90) 
 
 (022) 
 
 (4278) 
 
 
 619 
 
 0*426 
 
 356-6 
 
 28-1 
 
 + 25-0 
 
 122 
 
 5go 
 
 
 
 
 
 
 
 
 
 
 
 
 619 
 
 0*450 
 
 14-2 
 
 ig-5 ! 4-25-7 
 
 2 9 
 
 192 
 
 
 344 d 78o 
 
 6ig 
 
 o-g85 
 
 294-2 
 
 28-1 
 
 4-23-7 
 
 35 
 
 "4 
 
 242on/ 
 
 
 
 o'gSo 
 
 63-2 
 
 
 
 
 
 2 4 3 
 
 
 622 
 
 0-720 
 
 289-9 
 
 353*4 + '3*5 
 
 
 
 25 
 
 
 
 
 0-973 
 
 107-0 
 
 
 
 
 
 216 
 
 
 622 
 
 0-6 1 o 
 
 292-8 
 
 344-0 ;+ '3-o 
 
 o 
 
 16 
 
 
 Dec. 6 
 
 
 
 
 
 
 (223) 
 
 (986) 
 
 (1376) 
 
 
 625 
 
 0-534 
 
 56-o 
 
 282-0 4-i6-6 
 
 i3 
 
 37 
 
 
 
 
 
 
 
 
 
 
 
 
 621 
 
 0-717 
 
 5o-5 
 
 271-4 4-26-4 
 
 1 1 
 
 5i 
 
 
 33g-8o2 
 
 
 o-qi5 
 
 290-7 
 
 
 
 
 
 421 
 
 
 6270 
 
 0-746 
 
 iog-2 
 
 262-8 '47 
 
 o 
 
 12 
 
 804 / 
 
 
 
 0-832 
 
 246-2 
 
 
 
 
 
 55g 
 
 
 627 
 
 0-902 
 
 60-0 
 
 248-9 +26-4 
 
 IOO 
 
 358 
 
 
 
 614 
 
 77' 
 
 242-3 
 
 6i'8 
 
 2I'I 
 
 
 
 24 
 
 
 
 627 
 
 0-942 
 
 60-7 
 
 242-3 
 
 4-27-1 
 
 18 
 
 5i 
 
 io3oc 
 
 
 6,4 
 619 
 
 0-737 
 
 0-475 
 
 244-3 
 333-3 
 
 5g-3 
 28-6 
 
 -187 
 + 24-9 
 
 69 
 
 9+ 
 
 219 
 4 25 
 
 
 
 628 
 
 0-961 
 
 72-0 
 
 236-6 
 
 4-17-' 
 
 22 
 
 '"{ 
 
 1 352 c 
 
 \2j6nf 
 
 
 619 
 
 0-406 
 
 33 97 
 
 25'0 +200 
 
 18 
 
 "4 
 
 
 Dec. 12* 
 
 
 
 
 
 
 ('99> 
 
 (775) 
 
 (6882) 
 
 
 619 
 
 0-446 
 
 347-6 
 
 in 
 
 4-25-5 
 
 23 
 
 122 
 
 
 
 
 
 
 
 
 
 
 
 
 619 
 
 0-446 
 
 357-6 
 
 16-2 
 
 + 26-2 
 
 
 
 13 
 
 
 346-781 
 
 
 o-g85 
 
 297'0 
 
 
 
 
 
 1980 
 
 
 
 o-go5 
 
 108-9 
 
 
 
 
 
 36 4 
 
 
 6290 
 
 0-967 
 
 287-6 
 
 io-3 
 
 4-16-8 
 
 o 
 
 4 8 
 
 8l6 
 
 
 
 o-g3o 
 
 61-2 
 
 
 
 
 
 56 7 
 
 
 625 
 
 o-38o 
 
 38-5 
 
 282-0 
 
 4-i6-3 
 
 3 
 
 25 
 
 
 Dec. 7 
 
 
 
 
 
 
 (*>4) 
 
 (9 '7) 
 
 ('9") 
 
 
 621 
 
 0-600 
 
 40-0 
 
 270-8 
 
 4-26-4 
 
 10 
 
 84 
 
 
 * Indian photo. The Areas tit Spots and Facnlz are expressed in Millionths of the Sun'- visible Hemisphere. 
 
 a 64893. 
 
REDUCTION OF SOLAR . PHOTOGRAPHS THROUGHOUT 1878-1881. 
 
 MEASURES of POSITIONS and AREAS of SPOTS and FACUL^E upon the SUN'S DISK on PnoToURArns taken in the YEAK 1881 continued. 
 
 
 
 Dis- 
 tance 
 
 
 HELIOORAPHIC 
 
 SPOTS. 
 
 FACDL*:. 
 
 
 
 Die 
 
 tance 
 
 
 HELIOORAPHIC 
 
 SPOTS. 
 
 FACDLJE. 
 
 Mean 
 Solar 
 Time. 
 
 No. of 
 Group, 
 and 
 Letter 
 for 
 Spot. 
 
 from 
 Centre 
 in 
 terms 
 of 
 Sun's 
 
 Position 
 Angle 
 from 
 Sun's 
 Axis. 
 
 
 
 
 Mean 
 Solar 
 Time. 
 
 No. of 
 Group 
 and 
 Letter 
 for 
 Spot. 
 
 from 
 Centre 
 in 
 terms 
 of 
 Sun's 
 
 Position 
 Angle 
 from 
 Sun's 
 Axis. 
 
 
 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBRA 
 for each 
 Spot 
 (and for 
 
 Area of 
 WHOLE 
 for each 
 Spot 
 (and for 
 
 Area for 
 each 
 Group 
 (and for 
 r> av \ 
 
 Longi- 
 tude. 
 
 Lati- 
 tude. 
 
 Area of 
 UMBRA 
 for each 
 Spot 
 (and for 
 
 Area of 
 WHOLE 
 for each 
 Spot 
 (and for 
 
 Area for 
 each 
 Group 
 (and for 
 
 
 
 11 nil ins 
 
 
 
 
 Day). 
 
 Day). 
 
 uay>. 
 
 
 
 Radiug 
 
 
 
 
 Day). 
 
 Day). 
 
 Day). 
 
 1881. 
 
 
 
 
 
 
 
 o 
 
 
 
 
 1881. 
 
 
 
 
 
 o 
 
 
 
 
 
 
 345 d 78i 
 
 627 
 
 0798 
 
 54-9 
 
 249-5 
 
 + 26-6 
 
 64 
 
 399 
 
 
 35o d '975 
 
 
 0-849 
 
 2 997 
 
 
 
 
 
 840 
 
 
 627 
 
 0-855 
 
 57-7 
 
 242-5 
 
 + 26-6 
 
 O 
 
 1 80 
 
 
 
 627 
 
 0-572 
 
 329-7 
 
 246-8 
 
 + 27-9 
 
 108 
 
 424 
 
 
 
 628 
 
 0-870 
 
 70-3 
 
 23 77 
 
 + 16-6 
 
 3i 
 
 1 10 
 
 i6 9 5/ 
 
 
 627 
 
 0-528 
 
 340*2 
 
 239-4 
 
 + 28-1 
 
 3 
 
 10 
 
 
 
 629 
 
 0-962 
 
 79-1 
 
 222-7 
 
 + IO-3 
 
 ii 
 
 79 
 
 
 
 628 
 
 0-358 
 
 328-9 
 
 238-8 
 
 + 16-2 
 
 22 
 
 I 10 
 
 
 
 629 
 
 '979 
 
 78-5 
 
 218-6 
 
 + 11-1 
 
 o 
 
 7 5 
 
 961 c 
 
 
 629 
 
 0-261 
 
 9-3 
 
 225-3 
 
 + I3-3 
 
 8 
 
 29 
 
 
 Dec. 1 3* 
 
 
 
 
 
 
 (-19) 
 
 (1000) 
 
 (5 4 52) 
 
 
 629 
 
 0-216 
 
 17-9 
 
 223-g 
 
 + IO-2 
 
 3 
 
 i5 
 
 
 
 
 
 
 
 
 
 
 
 
 
 0-929 
 
 627 
 
 
 
 
 119 
 
 346*954 
 
 622 
 
 0-949 
 
 285-0 
 
 35 1-3 
 
 + I3-8 
 
 
 
 24 
 
 258 c 
 
 Dec. 1 8 
 
 
 
 
 
 
 (H4) 
 
 (588) 
 
 (959) 
 
 
 623 
 
 0-607 
 
 2 9 5- 7 
 
 3i5-o 
 
 + 14-3 
 
 20 
 
 79 
 
 
 
 
 
 
 
 
 
 
 
 
 624 
 
 0-286 
 
 214-5 
 
 290-3 
 
 14-6 
 
 O 
 
 4 
 
 
 
 
 
 
 
 
 
 
 
 
 625 
 
 0-307 
 
 357-4 
 
 281-6 
 
 + 167 
 
 8 
 
 32 
 
 
 352-004 
 
 
 0-908 
 
 3oo-2 
 
 
 
 
 
 662 
 
 
 626 
 
 0-391 
 
 41-6 
 
 265-1 
 
 -f-15-g 
 
 5 
 
 i5 
 
 
 
 
 0-817 
 
 290-3 
 
 
 
 
 
 245 
 
 
 621 
 
 0-491 
 
 20-3 
 
 269-q 
 
 4-26-2 
 
 13 
 
 49 
 
 
 
 
 0-781 
 
 25o-8 
 
 
 
 
 1 68 
 
 
 627 
 
 0-670 
 
 4 5'3 
 
 248-5 
 
 + 27-1 
 
 86 
 
 414 
 
 
 
 627 
 
 0-683 
 
 3 1 6-3 
 
 246-4 
 
 + 28-0 
 
 75 365 
 
 
 
 627 
 
 0-738 
 
 5o-2 
 
 241-3 
 
 + 27-2 
 
 12 
 
 i58 
 
 53 7 / 
 
 
 628 
 
 o-5o6 
 
 307-0 
 
 23g-o 
 
 -)-l6-I 
 
 29 96 
 
 
 
 628 
 
 0-721 
 
 60-2 
 
 23 7 -8 
 
 + 16-8 
 
 21 
 
 126 
 
 94/ 
 
 
 629 
 
 0-321 
 
 328-1 
 
 224-3 
 
 + H-I 
 
 23 
 
 
 
 629 
 
 o-855 
 
 77'' 
 
 220-1 
 
 + 10-4 
 
 23 
 
 97 
 
 
 
 629 
 
 0-247 
 
 329-2 
 
 221-6 
 
 + I0'5 
 
 o 8 
 
 
 
 629 
 
 0-892 
 
 76-3 
 
 218-8 
 
 + 117 
 
 O 
 
 57 
 
 
 
 
 0-873 
 
 57-8 
 
 
 
 
 219 
 
 
 629 
 
 0-925 
 
 76-0 
 
 214*1 
 
 + I2-5 
 
 o 
 
 32 
 
 406 c 
 
 
 
 '949 
 
 72-0 
 
 
 
 
 76 
 
 Dec. 14 
 
 
 
 
 
 
 (188) 
 
 (1087) 
 
 (1495) 
 
 
 
 0-976 
 
 108-0 
 
 
 
 
 5o3 
 
 
 
 
 
 
 
 
 
 
 Dec. 19 
 
 
 
 
 
 
 (104) (492) 
 
 (i8 7 3) 
 
 347782 
 
 
 0-984 
 
 285-2 
 
 
 
 
 
 1 1 56 
 
 
 
 
 
 
 
 
 
 
 623 
 
 0-751 
 
 290-1 
 
 3 16-3 
 
 + 14-1 
 
 9 
 
 129 
 
 
 
 
 
 
 
 
 
 
 
 625 
 
 o-365 
 
 327-0 
 
 281-7 
 
 + 16-6 
 
 o 
 
 20 
 
 
 353-o5 4 
 
 
 0-940 
 
 286-2 
 
 
 
 
 83 
 
 
 621 
 
 0-460 
 
 35g-3 
 
 270-2 
 
 + 26-1 
 
 2 
 
 32 
 
 
 
 
 o-g3i 
 
 3o3-2 
 
 
 
 
 418 
 
 
 626 
 
 0-280 
 
 g-5 
 
 267-1 
 
 + H' 8 
 
 3 
 
 24 
 
 
 
 627 
 
 o'8o5 
 
 307-3 
 
 246-6 
 
 + 27-8 
 
 89 36o 
 
 
 
 627 
 
 o-58 1 
 
 34-3 
 
 248-2 
 
 + 27-5 
 
 5 4 
 
 363 
 
 
 
 627 
 
 0775 
 
 3o8-3 
 
 243-4 
 
 4-27-2 
 
 o 3 7 
 
 
 
 627 
 
 o - 63g 
 
 42-1 
 
 241-1 
 
 + 27-1 
 
 12 
 
 87 
 
 
 
 628 
 
 0-674 
 
 296-5 
 
 239-0 
 
 + i5- 9 
 
 10 
 
 46 
 
 
 
 628 
 
 0-089 
 
 5g - 4 
 
 238-0 
 
 + 16-4 
 
 27 
 
 l3i 
 
 
 
 63o 
 
 0-917 
 
 I I 1-2 
 
 1 35-0 
 
 20-2 
 
 o 
 
 21 
 
 
 
 629 
 
 0-719 
 
 71-3 
 
 225-8 
 
 + 12-4 
 
 O 
 
 22 
 
 
 
 63o 
 
 '949 
 
 109-7 
 
 129-5 
 
 19-2 
 
 o 
 
 13 
 
 907 np 
 
 
 629 
 
 0736 
 
 69-3 
 
 224-7 
 
 + 14-2 
 
 O 
 
 11 
 
 
 Dec. 20 
 
 
 
 
 
 
 (99) 
 
 (477) 
 
 (1408) 
 
 
 629 
 
 0-743 
 
 75-2 
 
 223-1 
 
 + 10-1 
 
 16 
 
 4 2 
 
 
 
 
 
 
 
 
 
 
 
 
 629 
 
 0-792 
 
 74'9 
 
 218-8 
 
 + iri 
 
 
 
 23 
 
 
 
 
 
 
 
 
 
 
 
 
 629 
 
 0-842 
 
 73-8 
 
 214-0 
 
 4 12-9 
 
 12 
 
 5 7 
 
 741 c 
 
 353-g5o 
 
 627 
 
 0-892 
 
 3o2'g 
 
 246-3 
 
 -t-27'9 
 
 1 34 
 
 3 4 6 
 
 
 Dec. 1 5* 
 
 
 
 
 
 
 (.35) 
 
 (940 
 
 (1897) 
 
 
 627 
 
 0-882 
 
 3o5-2 
 
 244-2 
 
 + 29-4 
 
 20 
 
 i3o 
 
 469 nf 
 
 
 
 
 
 
 
 
 
 
 
 628 
 
 0-804 
 
 291-9 
 
 23g'4 
 
 416-1 
 
 33 
 
 49 
 
 88 4 / 
 
 348-849 
 
 623 
 
 0-907 
 
 287-0 
 
 319-4 
 
 + 14-8 
 
 o 
 
 H7 
 
 32O/> 
 
 
 
 63o 
 
 0-8 1 5 
 
 1 14-2 
 
 i36-2 
 
 20-7 
 
 3 
 
 '4 
 
 8 74 c 
 
 
 625 
 
 o'5i3 
 
 3o6-o 
 
 28i-3 
 
 + 16-3 
 
 
 
 16 
 
 
 
 63o 
 
 0-870 
 
 111-4 
 
 129-6 
 
 -I9'4 
 
 4 
 
 17 
 
 
 
 621 
 
 o'5o7 
 
 335-6 
 
 269-2 
 
 + 26-2 
 
 o 
 
 36 
 
 
 Dec. 21 
 
 
 
 
 
 
 094) 
 
 (556) 
 
 (2227) 
 
 
 626 
 
 0-335 
 
 323-8 
 
 267-5 
 
 + '4'4 
 
 o 
 
 25 
 
 
 
 
 
 
 
 
 
 
 
 
 627 
 
 o'5o5 
 
 i5- 4 
 
 247-1 
 
 + 277 
 
 72 
 
 362 
 
 
 354-778 
 
 627 
 
 O'g5o 
 
 3oo - 7 
 
 245-4 
 
 428-2 
 
 55 
 
 377 
 
 
 
 627 
 
 o"53g 
 
 26-6 
 
 240-1 
 
 4-27-5 
 
 7 
 
 65 
 
 
 
 628 
 
 o-8g3 
 
 289-3 
 
 238-8 
 
 416-1 
 
 o 
 
 16 
 
 363/ 
 
 
 628 
 
 '4 2 4 
 
 4.4-0 
 
 238-0 
 
 + 16-4 
 
 3i 
 
 126 
 
 
 
 63 1 
 
 0-412 
 
 207-8 
 
 897 
 
 23-3 
 
 o 
 
 12 
 
 
 
 629 
 
 o-53o 
 
 63-8 
 
 226-8 
 
 + 12-4 
 
 
 
 17 
 
 
 
 63 1 
 
 0-436 
 
 198-1 
 
 186-4 
 
 26-0 
 
 2 
 
 19 
 
 
 
 629 
 
 0-577 
 
 62-3 
 
 224-1 
 
 + 4'4 
 
 o 
 
 i3 
 
 
 
 632 
 
 o-5 1 2 
 
 50-4 
 
 1 53-4 
 
 417-1 
 
 2 9 
 
 
 
 629 
 
 0-569 
 
 70-3 
 
 223"o 
 
 + 9'9 
 
 6 
 
 28 
 
 
 
 632 
 
 0-547 
 
 55"4 
 
 >49'9 
 
 + 167 
 
 I 
 
 7 
 
 
 
 629 
 
 o-63o 
 
 70-5 
 
 218-7 
 
 + ii-i 
 
 o 
 
 10 
 
 
 
 63o 
 
 0-703 
 
 118-4 
 
 i36- 4 
 
 2I'l 
 
 I 
 
 q 
 
 
 
 629 
 
 0-696 
 
 69-7 
 
 21 3'9 
 
 + i3-o 
 
 9 
 
 22 
 
 
 
 63o 
 
 0-774 
 
 1 1 3-9 
 
 129-2 
 
 ig-6 
 
 o 
 
 13 
 
 237 / 
 
 Dec. 1 6* 
 
 
 
 
 
 
 (125) 
 
 (86 7 ) 
 
 (320) 
 
 Dec. 22* 
 
 
 
 
 
 
 (61) 
 
 (462) 
 
 (600) 
 
 349-958 
 
 
 o - q56 
 
 296-3 
 
 
 
 
 
 206 
 
 355-686 
 
 
 o'g i o 
 
 287-0 
 
 
 
 
 
 1145 
 
 
 623 
 
 0-982 
 
 285-2 
 
 310 2 
 
 + 1 4'6 
 
 o 
 
 80 
 
 244/ 
 
 
 627 
 
 0-988 
 
 299-0 
 
 244-1 
 
 -t-287 
 
 10 
 
 365 
 
 547 / 
 
 
 627 
 
 O'5O2 
 
 35o-i 
 
 246-8 
 
 + 28-1 
 
 84 
 
 386 
 
 
 
 63 1 
 
 0-533 
 
 226-8 
 
 190-6 
 
 23-3 
 
 o 
 
 3 
 
 
 
 627 
 
 0-493 
 
 2-5 
 
 23g-8 
 
 + 27-9 
 
 o 
 
 35 
 
 
 
 63 1 
 
 0'02I 
 
 21 5-1 
 
 185-3 
 
 27-2 
 
 2 
 
 6 
 
 
 
 628 
 
 O'3io 
 
 8-1 
 
 238-6 
 
 + i6-3 
 
 17 
 
 83 
 
 
 
 632 
 
 O'3g2 
 
 36-9 
 
 i5r6 
 
 4i6-i 
 
 O 
 
 8 
 
 
 
 629 
 
 o-36 1 
 
 56-i 
 
 223'! 
 
 + 10-2 
 
 1 1 
 
 3i 
 
 
 
 633 
 
 0-368 
 
 5ro 
 
 148-8 
 
 4 1 I'2 
 
 4 
 
 29 
 
 
 Dec. 17 
 
 
 
 
 
 
 (.12) 
 
 (6 1 5) 
 
 ( 4 5o) 
 
 Dec. 23* 
 
 
 
 
 
 
 06) 
 
 (4") 
 
 (1692) 
 
 * Indian photo. The Areas of Spots and Faculae are expressed in Millionths of the Sun's visible Hemisphere. 
 
 
REDUCTION OF SOLAR PHOTOGRAPHS THROUGHOUT 1878-1881. 
 
 77 
 
 MEASURES of POSITIONS and ABEAS of SPOTS and FACOL^E upon the SUN'S DISK on PHOTOGRAPHS taken in the YEAR 1881 continued. 
 
 Mean 
 Solar 
 Time. 
 
 No. of 
 Group, 
 
 and 
 Letter 
 
 for 
 Spot. 
 
 1881. 
 356 d - 7 57 
 
 Dec. 24* 
 357-684 
 
 Dec. 20* 
 
 358700 
 
 Dec. 26* 
 
 35g-6go 
 
 Dec. 27* 
 
 Dis- 
 tance 
 from 
 Centre 
 
 in 
 terms 
 
 of 
 
 Sun's 
 Kadius. 
 
 63 1 
 63 1 
 
 63 1 
 63 1 
 634 
 634 
 
 63 4 
 634 
 
 o-g53 
 0-989 
 0-992 
 
 0-964 
 0-804 
 0-767 
 0-931 
 0-975 
 
 0-904 
 0-881 
 0-490 
 0-527 
 0-863 
 0-9 1 5 
 
 0-964 
 0-920 
 0-406 
 0-448 
 0-784 
 
 Position 
 Angle 
 from 
 Sun's 
 Axis. 
 
 283-5 
 
 69-8 
 109-4 
 
 283-4 
 
 242'! 
 
 237-4 
 
 64-2 
 
 1 I2'I 
 
 HBLIOOKAPIUC 
 
 Longi- 
 tude. 
 
 189-9 
 1 85' I 
 
 244-8 189-1 
 241-6 185- 
 147-6 
 144-6 
 63-3 
 1 1 3-6 
 
 -4 
 109-0 
 
 Lati- 
 tude. 
 
 SrOTg. 
 
 Area of 
 
 DMBBA WHOLE 
 
 for each 
 Spot 
 
 (and for 
 Day). 
 
 2 4 5- 9 
 288-9 
 I72-3 
 1 65- 1 
 58-g 
 
 iog-5 
 io5-5 
 
 -23-6 
 -26-1 
 
 -23-8 
 -26-0 
 -26-8 
 -277 
 
 26-3 
 28-2 
 
 (o) 
 
 (7) 
 
 o 
 
 o 
 
 1 1 
 
 7 
 
 (18) 
 
 18 
 9 
 
 (37) 
 
 Area of 
 
 for each 
 Spot 
 
 (and for 
 JLlay). 
 
 (O) 
 
 38 
 
 7 
 
 (45) 
 
 43 
 29 
 26 
 to 
 
 9 3 
 73 
 
 (166) 
 
 !' u-< i i . 
 
 Area for 
 each 
 
 Group 
 (and for 
 
 Day). 
 
 711 
 253 
 354 
 
 286 
 258 c 
 121 c 
 4 5 7 
 689 
 (1811) 
 
 47 C 
 
 236 
 
 069 
 
 (.416) 
 
 810 
 io5 
 
 M4 
 (1064) 
 
 Moiin 
 Solar 
 Time. 
 
 No. of 
 Group, 
 
 and 
 Letter 
 
 for 
 Spot. 
 
 i88i. 
 
 Dec. 18* 
 
 36r6i8 
 
 Dec. 
 
 362-666 
 
 Dec. 3o 
 
 635 
 634 
 63 4 
 
 634 
 634 
 63 4 
 
 634 
 634 
 636 
 
 tanco 
 
 from 
 
 Centre 
 
 in 
 terms 
 
 of 
 Sun's 
 
 Uadius. 
 
 0-817 
 0-986 
 0-419 
 0-436 
 0-773 
 0-968 
 
 O'5 1 7 
 o'5o3 
 0-488 
 0-937 
 0-938 
 
 0-873 
 0-663 
 0-610 
 o-85o 
 
 Position 
 Angle 
 from 
 Sun's 
 Axis. 
 
 HRLIOGRAPBIC 
 
 Longi- 
 tude. 
 
 292-0 
 287-9 
 2O2-5 
 189-2 
 118-0 
 617 
 
 221-8 
 208-7 
 209-8 
 
 71-9 
 60-0 
 
 249-3 
 
 233-7 
 
 224-9 
 
 57-3 
 
 109- 
 104- 
 
 109-9 
 io3-5 
 103-4 
 
 109-9 
 
 io3'o 
 
 21-6 
 
 Lati- 
 tude. 
 
 25- 4 
 28'2 
 
 -25-2 
 28-8 
 
 -277 
 
 -25-5 
 -28-2 
 + 25-5 
 
 Si'OTS. 
 
 Area of 
 UMHKA 
 for eiich 
 
 Spot 
 (aud for 
 
 Day). 
 
 Area of 
 
 \VI10I.K 
 for each 
 
 Spot 
 
 (and for 
 
 Day). 
 
 o 
 
 16 
 
 8 
 
 (H) 
 
 25 
 
 o 
 7 
 
 32 
 
 >7 
 
 i3 
 
 o 
 
 (3o) 
 
 3i 
 
 97 
 81 
 
 (209) 
 
 73 
 
 32 
 
 38 
 
 (i 43) 
 
 io3 
 25 
 n 
 
 (.3 9 ) 
 
 Area for 
 each 
 
 Group 
 (and for 
 
 Day). 
 
 22O 
 187* 
 I O8 C 
 
 6 7 2 
 
 974 
 (2161) 
 
 770 
 
 i55 4 
 
 (2324) 
 
 700 
 
 n63 
 (i863) 
 
 * Indian photo. 
 
 The Area of Spots and Faculee are expressed in Millionths of the Sun's risible Hemisphere. 
 
 f Melbourne photo. 
 
 The following is a record of the absence of spots during the years 1878-81. Where the date is given without further remark, the 
 photograph was taken at Greenwich. I. denotes the Indian, and Ma. the Mauritius record. When there was more than one record for 
 the same day, preference has been given in the order named. 
 
 1878 
 
 January i Ma., 2 Ma., 3, 4 Ma., 5 Ma., 7, 8 Ma., 9, 10, i i, 12 Ma., i3 Ma., 16 Ma., 17, 18, 19 Ma., 20 Ma., 21 Ma., 22 Ma., 
 29, 3o, 3i. 
 
 February i, 2 Ma., 9 Ma., 10 Ma., u I., 12, i3 I., 14 I., i5 I., 16, 17 I., 18, 19 I., 20 I., 21, 22 I., 23, 24 I., 20 I., 28 I. 
 March i, 2, 3 I., 7 I., 8 I., 10 Ma., 19 I., 20 I., 21 Ma., 22 Ma. I., 23 I., 24 I., 25, 26 I., 27, 28 I., 29 I., 3o I. 
 
 April i, 2, 3 I., 4, 6, 7 I., 8, 9, 10 1., 1 1 I., 1 1, i3, 14 I., i5 I., 16 I., 17 I., 18, 19 I., 20 I., 21 I., 22 I., 23 I., 24 I., 20, 26 I., 
 27, 28 Ma., 29 Ma., 3o. 
 
 May i, 4, 5 Ma., 6, 7 Ma., 8 Ma., 9, 10, u Ma., 12 Ma, i3, 14 Ma., i5 Ma., 16, 17, 18, 19 Ma., 20 Ma., 21 M., 22 Ma., 23 I., 
 24 I., 25. 
 
 June 7 I., 8 I., 9 I., n I., 12, i3, 14 I., i5 I., 16 Ma., 17 I., 18, 19 I., 20, 21, 22, 23 Ma., 24 I., 25, 3o Ma. 
 July i I., 2 I., 3 I., 4, 5, 6, 8, 9, 10, 1 1, 12 I., i3, i5 I., 16, 17, 18, 19, 20, 21 I., 22, 23, 24 I., 25, 27, 28 I., 29 I., 3o, 3i 1. 
 August i, 2, 3 I, 4 L, 5, 6, 7, 8, 9, 10 I., 1 1 I., 12, i3 I., 14 i5, 16, 17, 19, 21 I., 22, 23 I., 24 I. 20 I., 26, 27 I., 28, 29, 3o, 3i I, . 
 September i I.. 14, i5 I., 16, 17 I., 18 I., 19, 20, 21 I., 22 J., 23 I., 24 I., 25 I., 26, 27, 28 I., 29 I., 3o. 
 
REDUCTION OF SOLAR PHOTOGRAPHS THROUGHOUT 1878-1881. 
 
 1 878 continued. 
 
 October i, 2, 3, 4, 5, 6 I., 7, 8, 9, 10, 11, 12 I., i3 I., 14, i5 L, 16 I., 17 I., 18 I., 19, 20 I., 21, 22 I,, 23, 24 I., 25, 26, 27 L, 
 
 28. 
 
 November 10 Ma., u, 12, i3 Ma., 14 Ma., i5 Ma., 16, 17 Ma., 18, 19, 23, 24 I., 25 I., 26 I., 27 I., 28 I., 29, 3o I. 
 December I I., 2 L, 3 L, 4 I., 5 I., 6 I., 7 I., 8 I., 9 L, 10 I., u I., 12 I., i3, 14 1., i5 I., 16 I., 17 L, 18 I., 21 I., 22 L, 23 L, 
 
 24 I., 25 L, 26 I., 27 I., 28 I., 29 L, 3o, 3i I. 
 
 1879 
 
 January i I., 2 I., 3 L, 4 I., 5 L, 6 L, 7 I., 8, 9 I., 10, n Ma. I., i3 I., 14 I., i5 I., 16 I., 17 L, 18 I., 19 I., 20 I., 21 I., 22 I., 
 
 23 I., 24 L, 25 L, 26 I., 27 I., 28 I., 29 I. 
 February i L, 2 I., 3 L, 4 I., 5 L, 6 I., 7 I., 8, 9 I., 10 I., u I., 12, i3 Ma., 14 I., 17 I., 18 I., 19, 20, 21, 22 I., 23 I., 24, 25, 
 
 26 I., 27 Ma., 28 I. 
 
 March i I., 2 Ma., 3, 4, 5 I, 6 L, 7 I., 8, 9 L, 10, 1 1, 12 I., i3, 14 I., i5, 17 I., 18, 19, 20 L, 21, 22 I., 23 I., 24 I., 25 I., 26 I., 
 
 27 L, 28 L, 29, 3o I., 3i. 
 
 April i Ma., 2, 3 Ma., 4, 5 Ma., 6 Ma., 7, 8, 9 Ma., 10 Mo., u Ma., 25, 26, 27 Ma. 28 Ma., 29, 3o. 
 
 May i, 2 Ma., 3, 4 Ma., 5, 6 Ma., 7 Ma., i3, 14, i5 Ma., 16 Ma., 17 L, 18 Ma., 19, 21, 22, 23 Ma., 24, 25 Ma., 26 Ma., 27, Ma., 
 
 28, 29, 3o Ma. 
 June i Ma., 2 Ma., 3, 4, 6 Ma., 7 Ma., 9, to Ma., u, 12 Ma., i3 Ma., 14, 16 Ma., 17, 18, 19 Ma., 20, 21 Ma., 22 Ma., 23 Ma., 
 
 24, 25. 
 
 July 7, 8 Ma., 9, 10 Ma., 18, 21, Ma., 22 Ma., 23 Ma., 24, 25, 26 Ma., 28 Ma., 29, 3o, 3i Ma. 
 August i, 2, 4 Ma., 5 Ma., 6, 7, 8 Ma., 9, 14 Ma., i5, 16 Ma., 18, 20 Ma., 21 Ma., 22, 5, 26 Ma. 
 September 8, 9 Ma., 10, n Ma., i3 14, Ma., i5, 16, 17 Ma., 18 Ma., 19 Ma., 20 Ma., 21 Ma., 22, 23 Ma., 3o. 
 October 4, 5 Ma., 6, 23 Ma., 24 Ma., 25, 26 Ma., 27, 28 Ma., 29 Ma., 3o Ma. , 3i Ma. 
 November i Ma., 2 Ma., 3 Ma., 19, 21 Ma., 22 Ma., 23 Ma., 24 Ma., 26 Ma. 
 December 5 I., 6, 7 Ma., 8 I., 9 I., 10 L, 1 1, 12 Ma., i3 Ma., 14 Ma., i5 Ma., 24, 26 Ma., 27 Ma., 28, 29 L, 3o I., 3i I. 
 
 1880 
 
 January i I., 2 I., 22, 23 I., 25 I., 27, 28, 29 I. 
 
 February i5 I., 16 1., 17, 18, 19 L, 20. 
 
 March 5, 20, 21 I., 22 I., 23 I., 24, 25, 26 L, 28 I. 
 
 April 10 I., ii I., 17, 18 L, 19, 20, 21, 22 L, 23, 24 I. 
 
 May i5, 16 I., 17, 18, 19 I., 22 L, 23 I. 
 
 June 5. 
 
 July 12 I., 14, i5, 19. 
 
 August i5 I., 26 I., 27 I. 
 
 November 6 I., 7 I.. 10 I., 1 1 I., 12 I. 
 
 1881 
 
 January 16 I. 
 
 August i5 I. 
 December 24 T.