the mean Denfity of the Earth * 
733 
Pole 
1 
2 
3 
4 
5 
6 
7 
Pole 
1 
2 
3 
4 
5 
6 
Pole. 
1 
2 
3 
4 
5 
SECT 
Vert. z.’s 
at A 
o / 
T C 2D n 
ION 
Bearings 
at a. 
0 / 
8 14 
25 - 
Diff. of 
Alt. 
6 
7 
8 
0 / 
2 20 
4 50 
18 52 
0 / 
42 15 
37 3 ° 
6 12 
69 
122 
6 5 
74 D 
I 47- E 
52 24 
54 a 
SECTION 28. 
3 9 
- 63 13 
”5 
Pole 
Vert. z.’s 
Bearings 
Diff. of 
5 5 1 
7 ° 37 
248 
at t. 
at v. 
Alt. 
9 11 
81 35 
505 
1 1 
0 / 
IO 23 D 
0 / 
16 36 
142 D 
11 21 
85 IO 
691 
2 
9 26 
23 56 
*95 
12 44 
8 7 45 
I 802 
3 
5 23 
28 45. 
13 6 
S E C T I 
O N 26 . 
4 
4 14 
32 24 
120 
5 
2 42 
37 46 
96 
Vert. a.*s 
Bearings 
Diff. of 
at b . 
at 0 . 
Alt. 
6 
1 34 
41 20 
62 
0 y 
0 / 
7 
0 351 
45 24 
24 
J 7 53 d 
6 35 
64 D 
8 
1 30 E 
48 52 
89 A 
0 26 
48 c 
Q 
7 
9 
3 3° 
51 4 
220 
2 I A 
60 8 
93 a 
10 
4 20 
54 22 
307 
3 4 
6 2 45 
151 
1 1 
4 49 
56 11 
3 6 7 
4 40 
66 15 
256 
12 
5 15 
5 8 4 i 
443 
6 20 
68 29 
374 
*3 
6 0 
60 4 
537 
8 10 
7 1 57 
55 ° 
V 
14 
6 47 
62 4 
664 
S E C T I 
O N 27. 
15 
7 24 
6 3 33 
778 
Vert. z.’s 
Bearings 
■DifF. of 
3l6 
8 16 
64 46 
924 
at £. 
at a . 
Alt. 
17 
8 46 
65 44-. / 
i°3° 
0 j 
0 / 
4 3° E 
59 25 
280 A 
SECTION 20. 
3 33 • 
57 12 
204 
5 ole. 
Vert. /J s 
Bearings 
Diff of 
at t. 
at v. 
Alt. 
1 47 
54 11 
92 
0 10 D 
50 15 
3 D 
1 
8 49 D 
26 ^ 
182 i> 
I 22 
46 54 
47 
2 
6 34 
3° 7 
i6 3 „ 
