and on the Dip of the magnetic Needle 399 
Table I. 
Observations on the Variation of the magnetic Needle . 
1786 
7 a.m. 
8 A.M. 
10A.M. 
12 M. 
i P.M. 
2P.M. 
4 P.M. 
6P.M. 
8 P.M. 
10P.M 
0 / 
O / 
O / 
0 / 
0 > 
0 / 
0 , 
O / 
O / 
° ' I 
Sep. 1 
23 7 
23 10 
23 18 
23 27 
23 29 
23 28 
23 20 
23 ... 
23 ... 
23 26 
2 
9 
10 
H 
20 
21 
21 
... 
... 
... 
14 
3 
7 
8 
1 1 
20 
23 
24 
... 
1 1 
10 
10 
4 
9 
9 
16 
22 
23 
23 
... 
... 
... 
12 
5 
9 
10 
16 
22 
23 
22 
16 
1 1 
... 
... 
6 
6 
6 
15 
23 
24 
23 
• •• 
14 
. * • 
8 
7 
7 
8 
26 
27 
26 
18 
13 
... 
8 
8 
23 
23 
18 
23 
23 
23 
... 
16 
13 
... 
9 
7 
9 
• • • 
24 
z6 
26 
20 
17 
... 
15 
10 
*5 
16 
28 
28 
26 
... 
... 
*•« 
H 
u 
9 
14 
• • • 
25 
25 
24 
• •• 
17 
14 
14 
12 
3 
15 
26 
18 
... 
17 
17 
16 
13 
5 
6 
2 s 
26 
23 
21 
... 
... 
13 
H 
4 
... 
• • • 
19 
22 
26 
• •• 
... 
i 5 
14 
15 
8 
... 
• •• 
20 
23 
23 
19 
H 
13 
13 
16 
8 
10 
• • • 
20 
22 
22 
• • * 
12 
9 
17 
8 
• • • 
IS 
24 
28 
28 
... 
16 
... 
10 
18 
6 
7 
13 
19 
19 
20 
••• 
18 
15 
14 
19 
5 
... 
1 1 
18 
23 
23 
20 
18 
15 
IS 
20 
8 
... 
1 1 
21 
23 
24 
1 6 
15 
14 
12 
21 
12 
• • • 
»4 
19 
23 
23 
15 
15 
14 
14 
22 
11 
... 
14 
20 
23 
23 
18 
16 
13 
13 
23 
5 
... 
8 
22 
22 
23 
... 
••• 
12 
1 1 
24 
3 
... 
1 1 
20 
23 
24 
20 
15 
12 
1 1 
25 
7 
9 
IS 
20 
23 
23 
21 
17 
1 I 
10 
26 
5 
... 
14 
21 
24 
26 
22 
H 
I I 
10 
27 
8 
10 
17 
24 
26 
27 
21 
H 
10 
9 
28 
5 
6 
13 
18 
19 
19 
20 
18 
IS 
S 
29 
10 
• • • 
19 
27 
28 
25 
16 
• •• 
... 
16 
3 ° 
9 
*•* 
21 
24 
24 
24 
20 
16 
21 
10 
J 
MDCCCVI. 3 F 
4 
