for determining the difference of meridians , &c. 
Calculation of the observations of the 18th. 
2d Combination. Capt. Sabine. Mr. Herschel. 
121 
A 
p 
B' ( 
9 h 54 m 52 s 
10 14 54 
C" r— > 
9 h 4 i m 46 s -o 
5 1 49‘5 
10 1 50 3 
11 48 .6 
21 47 .0 
41 47-2 
i8 h i 5 m 4 os '37 
35 4 * -i 3 
45 44-13 
>,v — ■ ^ n 
io h 29 m 348'4 
49 32-8 
59 33 -6 
\ C 
9 h 46 m 29 s 7 
10 6 31 -4 
' — 1 — ^ 
i7 h 26 m 46 s -25 
36 51 -02 
46 33 -62 
5 6 53 - 3 1 
18 6 53-42 
26 57 -05 
Mean ~ 
Mean = 
Mean — 
Mean r: 
Mean 
Mean — 
18 32 21 -88 
10 46 13 -6 
10 4 53 
9 5 6 30-55 
10 8 28 -i 
17 53 32-44 
A — B — 
7 46 8 -28 
B — B' = + 
41 2o-6oGa 
in on M.T.-o-iy 
B' — C'— 
0 8 22 -45 
C' — C" = — 
11 57 '55 Gain on M.T.-o-oi 
II 
N 
J 
b 
7 54 3°-73 
-7 45 4’34 
0 9 26-39 
— 4 -82 
— 0-17 
— 0 -oi 
(B-B') 
Gain of me 
on Sid.Tir 
+- (C'-C") = 
an 1 0 
ne j = - 4-82 
29 23 -05 
o 921 -39 — The corrected difFerence of Longitudes. 
Calculation of the observations of the 19th. 
2nd Combination. Observations of Capt. Sabine and 
Mr. Herschel. 
17 
A 
29m 
, A 
295-6 
— \ 
9 h 
B 
39 m 
3° s "4 
B' r - — 
9 h 54 m 5 o s -o 
9 h 
C' 
4 6m 33 s -8 
9 h 
C" r- 
42m 0 S.|J 
17 1 
> Z" 
3 o m 56 s '55 
18 
39 
5-2 -5 
30 
49 
41 -2 
34 
49 - 6 
10 
26 
33 - 7 
9 
51 
53 -8 
1 7 
40 
5 1 -34 
18 
49 
43 -4 
IO 
59 
3 ° -o 
10 54 
53 
10 
46 
37-6 
10 
I 
5 6-4 
17 
5 ° 
55 -77 
10 
22 
2 -5 
18 
1 1 
5 -°9 
10 
32 
24-8 
18 
21 
28 -6 5 
10 
41 
59’7 
18 
3 i 
5 -58 
10 
51 
59-8 
18 
4 i 
7 -ii 
1 1 
2 
3 -5 
18 
5 1 
12 -50 
Mean. 
Mean. 
Mean. 
Mean. 
Mean. 
Mean. 
18 
‘9 
00 
10 
29 
33 -87 
10 28 
11 -07 
10 
l 9 
55 "°3 
10 
23 
17-63 
18 
12 
20 -32 
A - 
B =2 
+ 
7 
50 
7 - 9 6 
B — 
B'= + 
0 
1 
22 • 8 
Gain of B On J 
A. T. = 
0 .00 
B'- 
- C'— 
4 - 
0 
8 
16 -04 
C'~ 
C* = - 
0 
3 
22 • 6 
— 
C 
0 *oo 
+ 
7 
58 
24 -oo 
0 
1 
59- 8 
~Mt 
Z" = 
— 
7 
49 
2 -69 
Gain of mean \ 
on Sid. Time J 
= + 0 -33 
9 
21 -31 
+ 0-33 
4 0 -oo 
- 0 -oo 
0 
9 
21 -64 
Corrected difference of Longitudes. 
MDCCCXXVI. R 
