H5 
by Means of two Altitudes of the Sun. 
Observed 
Lat. from each 
double 
: alt. 
Time from 
pair of corre- 
by the 
Time by the noon 
l by the Log. cos. of the 
sponding al- 
sextant. 
clock. 
sun. hour-angle. 
titudes. 
39° 
35' 
IO" 
II h 2l' 0" 
23' 40" 9,9976800 
5 2° 12' 39* 
4® 
7 
20 51 
20 49 
8206 
46 
44 
55 
26 49 
17 5 I 
8681 
45 
48 
5 
29 13 
IS 27 
9012 
44 
SO 
26 
31 I 
13 39 
9229 
40 
52 
30 
33 0 
1 1 40 
9437 
4i 
S3 
4° 
34 35 
10 s 
9579 
4i 
55 
19 
36 46 
7 54 
9742 
43 
5 6 
5° 
38 56 
5 44 
9864 
38 
57 
20 
4 1 4 
3 36 
9946 
4i 
57 
55 
43 54 
0 46 
9999 
4* 
57 
5° 
46 40 — 
2 0 
9983 
4i 
57 
28 
48 12 
3 32 
9948 
4i 
57 
0 
49 59 
5 19 
9883 
38 
5 6 
0 
Si 31 
6 S i 
9806 
43 
55 
IS 
S3 0 
8 20 
9713 
41 
53 
26 
55 2 
10 22 
955 6 
4i 
5i 
5 
57 44 
*3 4 
9295 
40 
+8 
38 
59 4 6 
15 6 
9057 
44 
45 
17 
1229 
1 7 29 
8735 
45 
4 1 
5 ® 
4 24 
19 44 
8388 
46 
35 
10 
8 20 
23 40 
ON 
OO 
O 
39 
22) 
1102 
556 
22) 
,2034190 
39 
5° 
3 1 
9,9992463 
Error of adjust. 
48 
Area g 6 
= 7537 
2 ) 39 
5i 
I 9 
Log. gb 
= 3.877* 
>9 
55 
39 
Refra. — parall. 
2 
35 
Const, log. -f log. rad. 
1 3>i°i5 
J 9 
53 
4 
Log. cos. 
merid. alt. 
9.97*6 
Semi-diameter 
16 
18 
23,0741 
Assumed merid. alt. 20 
9 
22 
Mean declin. 17 
34 
13 

Declin. 
9.9793 
— 
Lat. 
9,7867 
37 
43 
35 
— 
— 
Log.'g-c 
= 3.3°8 i 
Assumed lat. 52 
1 6 
25 
Correction from tab. 2d. 
3 
43 
Log. gb ■ 
-log. gc : 
= .5 6 9i 
True lat. - 52 12 42 not less accurate than the mean result from 22 meri- 
— dian altitudes. 
