and on the Dip of the magnetic Needle. 
4°3 
Table I. 
Observations on the Variation of the magnetic Needle . 
1787 
7 A.M. 
8 A.M. 
10A.M. 
12 M. 
1 P.M. 
2 P.M 
4 P.M. 
6P.M. 
8 P.M. 
10 P.M. 
nP.M. 
O / 
Q / 
O / 
O / 
O / 
O / 
O / 
O y 
O / 
0 1 
O / 
Jan. 1 
23 ... 
2 3 is 
23 19 
23 23 
2 3 2 4 
2 3 2 4 
23 21 
23 16 
23 ... 
2 3 - 
23 ... 
2 
... 
IS 
16 
20 
2 3 
2 3 
20 
17 
IS 
15 
... 
3 
14 
14 
15 
20 
21 
21 
19 
... 
14 
14 
14 
4 
15 
16 
19 
21 
23 
20 
18 
17 
16 
1 7 
5 
*4 
14 
15 
19 
24 
2 4 
22 
... 
15 
14 
H 
6 
12 
13 
20 
22 
29 
29 
... 
14 
14 
14 
7 
... 
14 
15 
22 
26 
24 
... 
19 
... 
... 
••• 
8 
H 
16 
21 
24 
24 
23 
... 
17 
15 
16 
9 
!5 
IS 
18 
21 
23 
23 
19 
19 
13 
13 
14 
10 
... 
1 6 
22 
2 3 
2 4 
22 
20 
17 
17 
16 
... 
1 1 
... 
17 
2 1 
2 3 
23 
22 
20 
19 
... 
• • • 
... 
12 
... 
19 
20 
.20 
2 5 
28 
2 3 
... 
... 
16 
... 
13 
H 
16 
20 
22 
22 
21 
18 
IS 
1 1 
\ 
14 
... 
14 
20 
28 
28 
28 
2 S 
19 
14 
13 
14 
*5 
... 
IS 
21 
23 
23 
23 
20 
17 
14 
M- 
... 
16 
... 
13 
l6 
2 3 
2 3 
22 
19 
H 
14 
13 
... 
17 
« 1 • 
14 
15 
24 
2 S 
27 
23 
20 
16 
15 
... 
' 18 
... 
13 
H 
21 
2 5 
2 S 
20 
16 
... 
... 
*9 
... 
*5 
l6 
22 
24 
2 4 
22 
17 
15 
15 
... 
20 
... 
34 
IS 
- 2 4 
2 4 
2 4 
21 
17 
14 
IS 
... 
21 
... 
14 
l6 
21 
2 3 
2 3 
20 
20 
18 
16 
• •• 
22 
15 
l6 
21 
2 3 
24 
21 
16 
14 
14 
... 
2 3 
... 
14 
21 
2 5 
29 
26 
2 4 
18 
16 
13 
... 
24 
... 
13 
18 
2 3 
2 5 
26 
2 4 
19 
18 
14 
... 
2 5 
... 
14 
19 
22 
2 7 
3 ° 
28 
26 
... 
• • • 
... 
26 
14 
H 
22 
27 
28 
2 9 
22 
22 
2 1 
21 
... 
27 
... 
14 
l6 
2 4 
24 
24 
20 
i 5 
10 
9 
... 
28 
... 
10 
l6 
21 
24 
2 4 
2 3 
18 
15 
H 
14 
29 
>3 
14 
l6 
24 
24 
24 
23 
2 3 
20 
18 
17 
3 ° 
H 
H 
15 
22 
24 
2 5 
2 4 
21 
18 
IS 
15 
3 1 
13 
14 
15 
2 4 
24 
24 
z 3 
18 
15 
13 
H 
