150 
Elements used in the computations have been obtained from 
the Nautical Almanac. 
1870. 
Sidereal Time 
at 
Observatory. 
Mean Time 
at 
Observatory. 
Mean Time 
at 
Greenwich. 
Angle 
N. Point 
from 
Vertex 
April 19. 
h. 
m. 
s. 
h. 
m. 
s. 
h. 
m. 
s. 
o 
First contact 
16 
36 
31 
14 
44 
32 
14 
53 
28 
106 
95 
Disappearan ce. . . 
16 
37 
12 
14 
45 
13 
14 
54 
9 
Reappearance . . . 
17 
44 
0 
15 
51 
50 
16 
0 
46 
Last contact .... 
17 
44 
42 
15 
52 
32 
16 
1 
28 
237 
235 
July 10. 
First contact 
20 
15 
58 
13 
0 
58 
13 
9 
54 
57 
81 
Disappearance ... 
20 
16 
38 
13 
1 
38 
13 
10 
34 
Reappearance . . . 
21 
14 
15 
13 
59 
6 
14 
8 
2 
Last contact .... 
21 
14 
53 
13 
59 
44 
14 
8 
40 
295 
325 
Sept. 30. 
First contact 
18 
27 
3 
5 
49 
57 
5 
58 
53 
88 
97 
Disappearance ... 
18 
27 
37 
5 
50 
31 
5 
59 
27 
Reappearance . . . 
19 
40 
36 
7 
3 
18 
7 
12 
14 
Last contact .... 
19 
41 
9 
7 
3 
51 
7 
12 
47 
258 
277 
The Angles are reckoned towards the right hand round the circum 
ference of the Moon’s image as seen in an inverting telescope. 
