To face page 
s. 
jhen its centre was in the secondary to the equator and meridian, 
he centre of the needle. Plate No. I. 
Long. o° 
Lat. 50° S 
Long. 0° 
Lat. 60° S. 
Long. 0° 
Lat. 70® S, 
Long. 0® • 
Lat. 80® S 
Lat. 90° S 
to N 
N to S 
S to N 
N to S 
StoN 
N to S 
S to N 
N to S 
S to N 
NtoS 
56 W 
16 58W 
0 i 
1 3 40 W 
13 38W 
10 08W 
0 1 
10 02W 
0 / 
5 08W 
0 / 
5 08W 
0 / 
0 22 E 
0 / 
0 22 £ 
20 
16 20 
«3 32 
13 26 
10 00 
9 54 
5 06 
5 04 
0 20 
0 20 
24 
15 22 
12 58 
12 52 
9 32 
9 26 
4 50 
4 50 
0 24 
0 22 
H 
15 c8 
12 52 
12 48 
9 24 
9 20 
4 50 
4 50 
0 20 
0 22 
20 
15 20 
12 56 
12 54 
9 32 
9 30 
4 50 
4 48 
0 18 
0 22 
52 
15 50 
»3 04 
13 02 
9 46 
9 42 
4 50 
4 48 
0 20 
0 24 
' 40 
16 40 
*3 24 
*3 24 
10 08 
10 10 
4 52 
4 54 
0 24 
0 28 
36 
17 36 
14 00 
13 56 
10 32 
10 30 
5 02 
5 04 
0 22 
0 26 
16 
18 12 
14 18 
14 12 
10 46 
10 40 
5 08 
5 08 
0 26 
0 24 
02 
18 20 
14 06 
14 00 
10 36 
10 36 
5 
5 
0 24 
0 24 
52 
17 52 
14 00 
>3 58 
10 32 
10 30 
5 10 
5 
0 22 
0 22 
20 
17 16 
J 3 42 
*3 42 
10 18 
10 16 
5 08 
5 08 
0 20 
0 20 
' 44 t 
16 42 * 
13 327 
*3 29^ 
10 06 -J- 
10 03 
5 00^ 
5 ooi 
0 21 1 
0 23 
0° 01^' 
o° 03V 
0° 03V 
0° 00^' 
0® Olf 
