for determining the difference of meridians , &c. iq 3 
Calculation of the observations of the 18th. 
3d Combination. Capt. Sab(ne (for Col. Bonne) — M. Largeteau. 
B y f 
9 h 54 m 5z s, o 
^ C' 
9 h 46 m 29 s# 8 
Mean. 
9 54 52 -o 
B — B' - 
C'— C11 — 
Mean. 
9 46 29 *8 
0 51 21-6 
-0 22 47 *7 
_A__ 
lS h i5n>4o s -37 
35 4i -13 
45 44 " I 3 
Mean. 
18 32 21 -88 
A — B = 
B' — C- 
C"—Z" — 
A — 
B 
io D 29 n ’34s-4 
49 32 -8 
59 33 -6 
Mean. 
10 46 13 '6 
7 46 8 -28 
O 8 22 ’20 
7 54 30 -48 
-7 45 4 "4 1 
o 9 26 -o 7 
— 4 -68 
O ’21 
O -02 
O 9 21 *l6 
Gain of mean on 
Sid. T 
o 28 33 -9 
mean on 1 , „ 
. _ / =— 4 *68 
C" , 
9 h 4in>46s-4 
5 1 49 7 
10 21 46 *8 
41 47 -2 
Mean. 
IO 9 17 *1)2 
^ Z" 
i7 h 26 m 46s-25 
36 51 -02 
18 6 53 -42 
26 57 -05 
Mean. 
*7 54 21 93 
GainofBonM.T. =: — o -21 
Of C - — o '02 
The corrected difference ofLongitudes. 
Calculation of the observations of the 19th. 
3d Combination. Col. Bonne and M. Largeteau. 
A „ 
v_ , p. 
c 1 
n" r 7 " 
^ l 
r~\ 
i8 h 39”52 s - 5 
io h 49 m 4i s 0 
9 h 44“49 s, 4 
9 h 3 6m 33 s ‘ 2 
9“42 m 03*4 
1 7 h 30“ 5 63-5 5 
18 49 43 - 4 
10 59 30 -8 
9 54 49 ‘8 
9 4 6 33 ’5 
9 5i 53 *5 
17 40 51 -34 
10 34 49 -8 
10 26 33 -7 
10 1 56-6 
17 50 55 -77 
10 54 53 -2 
10 46 37 -5 
10 22 2 -4 
18 11 5-09 
10 32 24-7 
1821 28-65 
10 41 59-9 
18 31 5 -58 
10 51 59-4 
18 41 7-11 
11 2 3-3 
1851 12-50 
Mean. 
Mean. 
Mean. 
Mean. 
Mean. 
Mean. 
18 44 47 ‘95 
10 54 35 ‘9° 
0 
O 
V-ri 
C/~i 
10 9 4-47 
10 23 17 -52 
18 12 20-32 
A — B = 
7 50 12 -05 
B — B' = + 
0 37 15 ’35 
Gain of B on M.T, =: + 0-04 
B' — C'= 
8 16 '08 
C'— C" — — 0 14 13-05 
C - 
— o-oi 
7 58 28 -13 
+ 
0 23 2-3 
C" — Z" = — 
7 49 2 -So 
Gain of mean } „ 
on Sid. Time C ^ ^ 
9 25-33 
— 3 V 8 
- • 
+ 0-04 
— 0 -oi 
0 9 21 '58 
Corrected difference of Long 
itudes. 
