OF HEAT FEOM THE MOON. 
539 
Table. 
I. 
II. 
III. 
IY. 
V. 
VI. 
VII. 
VIII. 
IX. 
X. 
j XI. 
XII. 
XIII. 
1871. 
Sidereal 
time. 
Gr. 
The Moon’s 
fog (ff)- 
f°g( E )- 
log (ff). 
log 
(G- corr.). 
The adopted mean 
E. 
Apparent 
zenith- 
distance. 
Apparent 
semi- 
diameter. 
Sidereal 
time. 
E . 
Apparent 
semi- 
diameter. 
h 
m 
h m 
o / 
/ /' 
Mar. 2. 
12 
22 
92-9 
— 
50 
4 
61-4 
15 
19-8 
9-9998 
00027 
9-9982 
1-9687 
13 20-0 
- 49 36 
15 18 0 
* 
13 
12 
86-2 
— 
49 
41 
68-7 
15 
18 1 
9-9999 
0-0005 
0-0000 
1-9359 
13 
43 
72-9 
— 
49 
26 
73-0 
15 
1 7 1 
9-9999 
9-9990 
0-0008 
1-8624 
11 
8 
654 
- 
49 
14 
766 
15 
161 
9-9999 
9-9981 
00018 
1-8154 
Mar. 27. 
7 
45 
34-2 

106 
8 
42-5 
14 
59-5 
00000 
00127 
9-9966 
1-5433 
10 0-0 
-105 19 
14 56-0 
8 
8 
36-9 
— 
106 
0 
45-3 
14 
59-1 
0-0000 
00106 
9-9970 
1-5746 
8 
30 
33-3 
— 
105 
53 
47-8 
14 
58-6 
00000 
00089 
9-9974 
1-5287 
8 
58 
31-5 
— 
105 
43 
51-7 
14 
57 9 
0-0000 
00063 
9-9982 
1 '5028 
9 
24 
31-3 
— 
105 
33 
55 1 
14 
57 -2 
0-0000 
00031 
9-9988 
1-4974 
10 
12 
25-8 
— 
105 
14 
62-2 
14 
55-7 
00000 
9-9988 
00004 
1-4108 
10 
34 
23-3 
— 
105 
4 
65-3 
14 
55 0 
0-0000 
9-9962 
0-0010 
1-3646 
11 
16 
21-9 
— 
104 
46 
714 
14 
53-6 
0-0000 
9-9917 
00022 
1*3343 
11 
37 
20 9 
— 
104 
37 
74-4 
14 
52-9 
o-oooo 
9-9895 
0-0030 
1-3126 
11 
59 
17 6 
- 
104 
25 
77-5 
14 
52-2 
00000 
9-9865 
00036 
1-2356 
Mar. 28. 
8 
57 
40-8 

94 
46 
43-3 
15 
4-4 
00000 
0-0097 
9-9966 
1-6170 
11 o-o 
- 94 0 
15 1-0 1 
9 
17 
40-8 
— 
94 
38 
46-1 
15 
3-9 
o-oooo 
0-0080 
9-9972 
16159 
| 
10 
55 
42-1 
— 
94 
2 
59 9 
15 
1-1 
0-0000 
00001 
o-oooo 
1-6247 
11 
13 
39-7 
— 
93 
55 
625 
15 
0 6 
o-oooo 
9-9990 
0-0004 
1-5982 
11 
30 
34-8 
— 
93 
47 
64-9 
15 
00 
o-oooo 
9-9973 
00010 
1-5399 
11 
48 
35-2 
— 
93 
40 
67-6 
14 
59-5 
0 0000 
9-9958 
0-0014 
1-5437 
12 
26 
329 
— 
93 
22 
730 
14 
58-1 
0 0000 
9-9920 
0-0028 
1-5120 
12 
42 
34-6 
— 
93 
14 
75-2 
14 
57-7 
0-0000 
9-9903 
0 0032 
1-5326 
Mar. 29. 
9 
16 
660 

83 
30 
39-0 
15 
13-2 
9-9999 
00101 
9-9962 
1-8257 
11 46-0 
- 82 33 
15 9-2 I 
9 
35 
65-9 
— 
83 
23 
41-4 
15 
12-8 
9-9999 
0-0088 
9-9966 
1-8242 
9 
52 
64-4 
— 
83 
18 
43-5 
15 
12-4 
9-9999 
0-0080 
9 9970 
1-8138 
11 
44 
56-3 
— 
82 
34 
58-9 
15 
9-4 
9-9999 
00002 
9-9998 
1-7504 
12 
3 
55-0 
— 
82 
26 
61-8 
15 
8-7 
9-9999 
9-9988 
0-0006 
1-7397 
12 
27 
561 
— 
82 
15 
65-2 
15 
8-0 
9-9999 
9-9968 
0-0012 
1-7469 
12 
43 
561 
— 
82 
8 
67-5 
15 
7-4 
9-9999 
9-9956 
00018 
1 7462 
13 
5 
46-6 
— 
81 
58 
70 -7 
15 
6 - 6 
9-9999 
9-9938 
00026 
1-6647 
13 
31 
39-8 
— 
81 
46 
74-3 
15 
5-8 
9-9999 
9-9917 
0-0034 
1-5949 
13 
49 
34-2 
- 
81 
37 
76-8 
15 
5-2 
9-9999 
9-9901 
0-0040 
1-5280 
Apr. 3. 
10 
53 
315-5 

22 
49 
46-6 
16 
18-1 
9-9983 
0 0034 
99970 
2-4977 
14 0-0 
- 21 31 
16 14*4 
t 
11 
27 
318-7 
— 
22 
35 
46-0 
16 
18-2 
9-9982 
0-0028 
9-9968 
2-5012 
12 
8 
327-5 
— 
22 
18 
46-4 
16 
18 1 
9-99S! 
0-0021 
9-9970 
2-5124 
12 
47 
318-2 
— 
22 
3 
48-2 
16 
17-5 
9-9982 
00014 
9-9974 
2-4997 
13 
55 
303-2 
— 
21 
35 
53-9 
16 
16-4 
9-9984 
0 0001 
9-9984 
2-4786 
15 
3 
315-5 
— 
21 
2 
62 1 
16 
14 4 
9-9983 
9-9987 
o-oooo 
2-4960 
15 
44 
251-7 
— 
20 
41 
67-5 
16 
130 
9-9989 
9-9978 
0-0014 
2-3990 
(16 
30 
166-4) 
haze 
16 
45 
181-9 
— 
20 
11 
75-8 
16 
10 7 
9-9994 
9-9965 
0-0034 
2-2591 
Apr. 30. 
12 
14 
204-3 

54 
42 
45 1 
16 
4 9 
9-9993 
0-0060 
9-9960 
2 3115 
14 30-0 
- 53 46 
16 0-5 
12 
52 
2121 
— 
54 
28 
47-8 
16 
4 1 
9-9992 
0 0042 
9-9968 
2-3267 
13 
55 
197-9 
— 
54 
1 
54-2 
16 
2-8 
9-9993 
00015 
9-9978 
2-2951 
15 
32 
165-3 
— 
53 
17 
671 
15 
59-6 
9-9995 
9-9969 
0-0008 
2-2155 
16 
16 
148-2 
— 
52 55 
73-4 
15 
57-9 
9-9996 
9-9948 
0-0024 
2T675 
16 
56 
138-6 
- 
52 
35 
78-8 
15 
56-4 
9-9997 
9-9925 
0 0036 
2T376 
May 3. 
11 
47 
298-2 

14 
49 
66-3 
16 
401 
9-9984 
00010 
0-0004 
2-4743 
13 00 
- 14 16 
16 40 6 
12 
48 
3246 
— 
14 
21 
62-3 
16 
41-2 
9-9982 
00002 
9-9995 
2-5092 
* On March 24th, 1871, the moon was observed at an altitude of 18° ; no trace of heat was perceptible. 
Moon’s age 3-6 days, 138° from full. 
f Observations were also made on April 6 and April 7, 1871; but as they were intentionally made 
under most unfavourable circumstances to test the effect of wind and haze, they are not included in the above 
journal. 
4 k 2 
