590 
THE EARL OF ROSSE ON THE RADIATION 
Table (continued). 
I. 
II. 
III. 
IV. 
V. 
VI. 
VII. 
VIII. 
IX. 
X. 
XI. 
XII. 
XIII. 
1871. 
Sidereal 
time. 
G. 
The Moon’s 
lc >g (ff)- 
Dg(e)- 
log (<r). 
log 
(Gcorr.). 
The adopted mean 
£. 
Apparent 
zenith- 
distance. 
Apparent 
semi- 
diameter. 
Sidereal 
time. 
£. 
Apparent 
semi- 
diameter. 
b m 
h m 
/ 
May 28. 
14 50 
880 
-72 48 
59-8 
15 57 9 
9-9999 
0 0050 
9-9974 
1-9468 
16 00 
-72 14 
15 55*3 
15 82 
80-7 
-72 29 
65-2 
15 56 6 
9-9999 
00025 
9 9986 
1-9079 
16 7 
75-5 
-72 11 
70 1 
15 55-3 
9-9999 
9-9995 
0 0000 
1 8773 
16 40 
591 
-71 55 
74-9 
15 54 0 
9-9999 
9-9972 
00012 
1-7699 
16 58 
51-4 
-71 46 
77-7 
15 53 2 
o-oooo 
9-9959 
0-0018 
1-7087 
17 12 
471 
-71 39 
79-6 
15 52-7 
00000 
9-9949 
00024 
1-6703 
May 29. 
14 26 
121-4 
-60 37 
57 0 
16 13 6 
9-9997 
0-0050 
9-9972 
2-0861 
16 00 
-59 55 
16 10-7 
15 0 
120 9 
-60 22 
60-2 
16 12-8 
9-9997 
0 0032 
99980 
20834 
15 35 
106-4 
-60 11 
64- 1 
16 118 
9-9998 
00019 
9-9990 
20277 
17 25 
61-2 
-59 14 
78'5 
16 78 
9-9999 
9-9951 
0-0026 
1-7844 
May 30. 
16 22 
1383 
-45 57 
68-3 
16 26-9 
9-9997 
0-0018 
9-9988 
2-1412 
17 00 
-45 37 
16 25-7 
17 30 
108 5 
-45 24 
76-6 
16 24-5 
9-9998 
9-9988 
0 0010 
20351 
June 1. 
15 56 
279-1 
-18 10 
69-7 
16 48 0 
9-9986 
00014 
9-9988 
2-4446 
17 30-0 
-17 29 
16 46-5 
16 34 
273-7 
-17 53 
7 10 
16 477 
9-9987 
00008 
9-9994 
2-4362 
17 13 
257-2 
-17 36 
73-3 
16 47-0 
9-9988 
00003 
9-9996 
2-408S 
18 25 
193 2 
-17 4 
79-4 
16 45 1 
9-9993 
9-9991 
00012 
2-2856 
June 2. 
15 47 
327-9 
- 3 59 
74-3 
16 50-5 
9-9981 
0-0001 
00000 
2-5139 
16 25-0 
- 3 42 
16 50-5 
16 25 
285-1 
- 3 42 
738 
16 50-6 
9-9986 
o-oooo 
9-9999 
2-4535 
17 2 
3325 
- 3 26 
74-2 
16 505 
9 9981 
9-9999 
0-0000 
2-5197 
Xov. 1. 
1 52 
139-3 
+51 48 
55-3 
14 54-0 
9-9997 
9-9986 
00012 
2 1435 
2 30 0 
+52 2 
14 55-3 
! 
2 8 
130-9 
+51 54 
52-8 
14 54 5 
9-9997 
9-9992 
00008 
21167 
2 29 
141-3 
+52 2 
49-9 
14 55 1 
9-9996 
00000 
0-0002 
2-1499 
3 31 
152-2 
-1-52 24 
41-5 
14 56 6 
9-9996 
0 0023 
9-9986 
2-1829 
Dee. 19. 
2 21 
87-4 
-78 26 
57-8 
15 30 8 
9-9999 
00010 
9-9996 
1-9420 
2 36 0 
O 
CO 
1 
15 30-4 
2 37 
81-8 
-78 20 
59-6 
15 30-3 
9-9999 
0-0000 
0 0002 
1 9129 
2 51 
79-9 
-78 14 
60-7 
15 30 1 
9-9999 
9-9990 
00004 
1-9018 
Dec. 20. 
1 5 
121-9 
-67 9 
49-9 
15 20-6 
9-9997 
00082 
9-9970 
2-0910 
4 00 
-66 8 
15 17-4 
1 
1 36 
123-8 
-66 58 
495 
15 20 7 
9-9997 
0-0067 
9-9970 
2-0961 
1 51 
132-3 
-66 53 
49-7 
15 20 6 
9-9.997 
0-0061 
9-9970 
2-1244 
2 6 
124 0 
— 66 48 
500 
15 20-6 
9-9997 
0-0054 
9-9970 
2 0955 
5 31 
103 5 
-65 32 
68-5 
15 16-5 
9-9998 
9-9953 
0-0010 
2 0111 
‘ 
6 25 
88-4 
-65 9 
75-8 
15 147 
9-9999 
9-9922 
0-0028 
1-9414 
6 39 
80-5 
— 65 3 
77-8 
15 14-2 
9-9999 
9-9914 
00032 
1-9003 
! Dec. 25. 
2 8 
356-1 
-10 56 
48-3 
14 53-5 
9-9978 
0-0009 
0-0014 
2-5516 
4 00 
-10 16 
14 55-0 
2 40 
359-7 
-10 44 
4 4 0 
14 54-2 
9-9977 
0-0007 
0-0008 
2-5552 
3 14 
357’3 
-10 32 
39-8 
14 54 9 
9-9978 
00003 
00000 
2-5512 
3 47 
370 1 
-10 20 
36 1 
14 55 5 
9-9976 
0 0001 
9-9996 
2-5656 
4 26 
387-6 
-10 8 
32-7 
14 56 0 
9-9974 
9-9999 
9-9990 
25847 
5 2 
379-7 
- 9 57 
30-7 
14 56-2 
9-9975 
9-9996 
9-9988 
2-5753 
! 5 17 
384-6 
- 9 53 
300 
14 56-3 
9-9974 
9-9995 
9-9988 
2-5807 
Dec. 26. 
1 57 
315-4 
+ 0 36 
562 
14 51-4 
9-9983 
o-oooo 
00016 
2-4988 
3 0 0 
+ 0 45 
14 53 0 
t 
2 36 
308-0 
+ 0 41 
47-8 
14 52 9 
9-9983 
00000 
o-oooo 
2-4869 
6 50 
362 0 
+ 1 22 
29-3 
14 55-8 
9-9977 
0*0001 
9-9974 
2-5539 
* 1871, June 2. — Full moon ; the moon passed clear of the earth’s shadow and penumbra, 
f 1871, December 26. — Full moon ; using the formula given at p. 135 of the Appendix to the Nautical 
Almanac for 1836, which makes the semidiameter of the earth’s penumbra equal to A_L (P'+tt— o-) + 2<r (where 
I y is the moon’s horizontal parallax, n the sun’s parallax, and a the sun’s semidiameter), it will be found that 
at 3 h 7 m sidereal time the semidiameter of the penumbra was 1° IF 2", while the distance of the centre of 
the moon from the centre of the shadow was 1° 10' 42''; so that an immersion to the extent of 20" only took 
place, but at the time of observation the moon was clear of the penumbra. 
