amount of the dip of the magnetic needle, in London, &c. 1 3 
In the meridian. 
1 
2 
3 
A 
Oscill. 
r 
Arc. 
Time. 
Int. 
l — 
Arc. 
Time. Int. 
Arc. 
Time. Int. 
O 
m 
s 
0 
m s 
0 
m 
S 
0 
3° 
0 
00 
s 
30 
O OO s 
30 
0 
00 s 
55> 5 
55 
5 5 »5 
10 
24 
0 
55>5 
23 
0 55 
24 
0 
55>5 
55 
55 
55 
20 
20 
1 
5°>5 
20 
1 50 
21 
1 
50,5 
55 
16 
55 
55 
3° 
17 
2 
45>5 
2 45 
*7 
2 
45>5 
54>5 
54>5 
55 
40 
H 
3 
40 
»3 
3 39>5 
3 
4°>5 
54 
54>5 
54*5 
5° 
10 
4 
34 
10 
4 34 
10 
4 
35 
50 Oscillations in Z74 274 275 seconds. 
M = 274,33. 
Perpendicular to the meridian. 
1 2 
Oscill. 
I 
Arc. 
—A. 
Time. 
1 
Int. 
< — 
Arc. 
•A. 
Time. 
■-» 
Int. 
0 
m 
S 
O 
m 
s 
0 
30 
0 
00 
s 
28 
0 
00 
s 
57 
57 
IO 
25 
0 
57 
57 
00 
0 
57 
57 
20 
20 
16 
X 
54 
56,5 
1 
54 
56,5 
16 
30 
2 
5°>5 
56,5 
2 
50,5 
56,5 
4° 
h 
3 
47 
56 
14 
3 
47 
56 
5 ° 
1 1 
4 
43 
10 
4 
43 
50 Oscillations in 283 283 seconds. 
P= 283 
_ 2 74>33 ^ -93966 sine of 69°.59',7. N. dip. 
P* ~ 283* ^ 
