the mean Denfiiy of the Earth. 7 2-9 
S E C T I 
ON IO. j 
j *3 : 
9 44 
7 & 
1 168 
Pole, 
j Vert. 2L’s 
Bearings 
DifF. of | 
*4 
9 53 
76 34 
1258 
at a. 
at b. 
Alt. 
*5 
10 38 
76 55 l 
*443 
R 
1 
19 41 D 
5 1 12 
53 1 D 
! 
S E C T I 
ON 12. 
2 
! 3 52 
57 22| 
426 
3 
8 7 i 
62 56 
295 
Pole. 
Bearings 
at d . 
Bearings 
at c. 
g 
0 
4 
2 30 
68 47 
106 
0 i 
0 / 
<£> 
a ^ 
5 
0 59 
'73 55 j 
47 
I 1 
68 14J 
102 6 
<0 a 
TT * 0 
6 
0 22 |E 
76 52 
27 A 
2 
71 16 
98 23 
r> t 
A rt 
7 
0 59 
79 Hi 
70 
3 
73 55 
94 56 
<U ^ 
O ^ 
8 
1 39 
81 7 
124 
4 
79 0 
89 33 
rt C 
9 
2 25 
82 42 
194 
5 
85 28 
82 49 
<L) 
,<U CTS 
U-i +-* 
10 
3 5 
84 12 
266 
6 
91 19 
76 48 
<U 'Ti 
> c 
r -G C 3 
| 11 
3 36 
85 412 
338 
7 
97 5 
71 8 
.52 "rt 
co 
12 
3 48 
86 27 
373 j 
I 8 
102 21 
66 20 
0 
'o N 
I 0 
108 18 
60 36 
0 
9 
S E C T I 
ON II. 
1 10 
1 *3 33 
56 15 
*-> G 
Pole. 1 
[ Vert, a’s 
at d. 
Bearings 
at c. 
DifF. of 
Ait. 
1 1 1 
1 1 7 12 
53 n 
O-i 'qj 
O 43 
fH 
0 / 
0 / 
12 
1 19 16 
52 4 
U 
rt 
I 
12 56 D 
48 18 
62 4 
23I D 
334 
*3 
1 *9 53 
52 1 
w 
2 
9 5 ° 
3 
5 *5 
67 9 
242 
S E C T I 
ON 13. 
4 
2 25 
6 9 5 1 ! 
*35 
Pole. 
Vert. Z. ’s 
Bearings 
DifF. of 
71 20 
70 A 
at G. 
at f. 
Alt. 
5 
O 59 E 
220' 
0 / 
0 j 
6 
3 0 
72 13 
1 
3 7 *> 
75 2 
92 D 
7 
4 31 
73 9 
3 ^ 
2 
0 12 
79 46 
2 
8 
6 7 
73 53 
533 
3 
4 I E 
9 1 55 
221 A 
9 
6 59 
74 27 
652 
4 
6 8 
95 0 
3 B 5 
10 
7 53 
74 52 
777 
5 
7 49 
9 6 34 
530 
11 
8 49 
75 9 l 
9°4 
6 
9 50 
99 27 
789 
12 
9 27 
75 42 
1048 
7 
10 52 
IOO IO 
9*5 
4X 
Yol. LXVIII 
