4o8 
Mr. Gilpin’s Observations on the Variation , 
Table I. 
Observations on the Variation of the magnetic Needle. 
oo 
6 A.M 
7 A.M. 
8 A.M. 
10 A.M. 
12 M. 
1 P.M. 
2 P.M. 
4 P.M 
6 P.M 
8 P.M. 
10 P.M. 
11 P.M. 
O / 
O / 
O / 
O / 
O > 
0 / 
O / 
O / 
O / 
O / 
O / 
O / 
June i 
23 8 
23 7 
2 3 7 
23 11 
23 26 
23 28 
23 28 
23 22 
23 17 
23 16 
23 18 
2 3 17 
2 
6 
6 
6 
17 
24 
2 5 
2 5 
20 
3 9 
3 7 
18 
l 7 
3 
6 
6 
6 
18 
28 
28 
2 7 
24 
20 
18 
19 
18 
4 
6 
5 
7 
13 
24 
26 
2 5 
2 1 
19 
16 
15 
16 
5 
6 
6 
s 
16 
29 
28 
2 9 
22 
*9 
17 
16 
3 7 
6 
7 
6 
8 
17 
29 
3 ° 
3 ° 
2 4 
19 
19 
16 
3 5 
7 
5 
5 
5 
13 
25 
3 ° 
3 ° 
27 
22 
J 7 
... 
16 
8 
7 
8 
8 
19 
28 
28 
28 
2 7 
20 
1 6 
15 
16 
9 
18 
17 
19 
21 
26 
26 
26 
19 
17 
17 
17 
17 
10 
16 
15 
16 
20 
24 
26 
26 
22 
J 9 
18 
J 9 
19 
1 1 
6 
7 
6 
16 
28 
27 
2 7 
20 
19 
19 
18 
*9 
12 
6 
6 
6 
3 5 
28 
29 
2 9 
26 
3 9 
»9 
19 
19 
13 
6 
5 
6 
13 
2 5 
27 
2 7 
2 3 
20 
3 9 
*9 
19 
H 
6 
6 
7 
H 
26 
3 ° 
3 1 
2 4 
20 
16 
... 
16 
3 5 
3 
5 
5 
10 
28 
3 1 
3 2 
2 5 
20 
20 
20 
20 
16 
6 
5 
6 
IS 
28 
3 i 
33 
26 
17 
17 
1 6 
18 
1 7 
8 
8 
10 
1 1 
28 
3 i 
3 ° 
25 
18 
19 
16 
17 
18 
9 
8 
10 
16 
29 
3 i 
3 i 
26 
18 
18 
18 
17 
19 
6 
5 
5 
13 
26 
27 
2 7 
2 4 
J 7 
17 
18 
17 
20 
h 
J 3 
H 
21 
3 1 
3 2 
3 2 
24 
*9 
17 
16 
18 
21 
8 
9 
8 
18 
26 
2 9 
29 
2 4 
*9 
19 
• •• 
18 
22 
1 1 
1 1 
10 
18 
2 9 
2 9 
29 
2 4 
3 9 
18 
19 
18 
2 3 
8 
8 
10 
18 
26 
26 
26 
20 
19 
T 9 
19 
1 19 
2 4 
6 
6 
6 
16 
2 3 
28 
29 
22 
19 
*9 
3 9 
J 9 
2 5 
! 9 
19 
19 
1 9 
28 
28 
2 9 
21 
19 
18 
18 
18 
26 
8 
7 
7 
15 
23 
2 3 
2 3 
18 
18 
l 9 
18 
18 
2 7 
9 
1 1 
9 
H 
28 
3 ° 
29 
18 
18 
18 
18 
18 
28 
10 
9 
1 1 
3 9 
26 
28 
26 
3 9 
16 
J 7 
... 
... 
29 
9 
9 
1 3 
18 
26 
26 
2 5 
20 
18 
17 
19 
18 
3 ° 
10 
8 
10 
17 
24 
26 
26 
21 
18 
20 
18 
18 
