656 GALBRAITH'S METHOD OF RECORDING OBSERVATIONS. 
1834, July 5th, Chronometer fast for mean time, . .. .. .. 2' 40" 
Equation of time with a contrary sign. . .. ^ . . .. .. .. 4 16 
Chronometer fast on apparent time. . .. .. .. .. ..656 
Barometer, 30^“- 17, attached thermometer, 70® F., detached, or that in the open air, 
68® F. Or, instead of making the 6“ 563 the error to each, it may be applied to 121* 
by substraction, thus giving 111* 53m 4s for the time of apparent noon by chronometer, 
a method rather more convenient. 
METHOD OF RECORDING THE OBSERVATIONS. 
Time by 
Observed 
Face of 
Obs. < 
Chronometer. Level. 
Limb. 
Ver. Altitude. 
Circle. 
Ji. 
m. B. 
e. 
0 . 
1 
11 
50 50 1 
fA 56® 
32' 15 " 
Er. 
6 56 
r 
16 
O’s 
1. 
lA B 
30 15 
E. 
11 
43 54 J 
I 
Ic 
31 0 
2 
11 
53 141 
fA 57 
1 30 
E. 
6 56 
r 13 
21 
O’s 
u. 
iAb 
3 45 
W, 
11 
46 18 J 
1 
Ic 
0 45 
3 
11 
55 58-^ 
1 
fA 56 
36 45 
E. 
6 56 
1 23 
11 
O’s 
1. 
iAb 
34 45 
E. 
11 
49 2 . 
1 
Ic 
35 30 
4 
11 
58 41- 
1 
f A 57 
5 15 
E. 
6 56 
r 13 
16 
O’s 
u. 
lA B 
3 0 
W. 
11 
51 45. 
1 
Ic 
4 45 
5 
12 
2 31i 
f A 56 
40 0 
E. 
6 56 I 
^ 20 
13 
O’s 
1. 
iAb 
37 45 
E, 
11 
55 35 J 
I 
Ic 
39 0 
6 
12 
5 39 ] 
1 
f A 57 
6 45 
E. 
6 56 
1 10 
23 
O’s 
tt. 
lA B 
8 45 
W. 
7T7 
1 
Lc 
6 0 
11 
58 43 J 
I 
e=: 103o 
= 100 
Mean 
of 
Deg. 56 
30 0 
( 
5= 100 
357’ 45” 
— — 
— 
= + 
19 52*5 
n V 
6 X 
3 
(e- 
— 0 ) a" 
3 X 5*5 
e- 
-0= 3 & - 
= - 
= 
— 1*38 
2 n 
2X6 
Correct mean of the whole, . . •• •• •• •• 56 49 51*12 
REDUCTION TO THE MERIDIAN. 
Times. 
11 
Dist. from Mer. m 
n 
m. s. 
m, s. 
' 
43 54 
16 6 
508*77 
0*62 
46 18 
13 42 
368*46 
0*30 
49 2 
10 58 
236*10 
0*14 
51 45 
8 15 
133*63 
0*05 
53 35 
4 25 
38*30 
0*01 
58 43 
1 17 
3*23 
0*00 
1288*49 
1*12 
Mean, . . 
0*1867 
L to the Meridian. 
Refraction. 
' cos. 9*748123 
0 . " 
i 
cos. 9*964560 
Z 
== 33 10 log. a 0 1*5818 
’ sec. 0*261952 tan. 
0*1847 B 
= 30*17 log. 
0*0025 
9*974635 X 2= 
=9*9493 »* 
70 a log. 
9*9991 
