4oo Mr. Gilpin's Observations on the Variation , 
Table I. 
Observations on the Variation of the magnetic Needle. 
178 6 
7 A.M. 
8 A.M. 
10 A.M. 
12 M. 
iP.M. 
2P.M. 
4 P.M. 
6 P.M. 
8P.M. 
10 P.M. 
11 P.M. 
O / 
0 / 
O / 
* , 
© / 
O > 
O / 
0 / 
0 / 
O / 
0 / 
Oct. 1 
2 3 7 
23 9 
23 13 
23 21 
23 23 
23 ... 
23 ... 
23 ... 
23 12 
23 10 
23 ... 
2 
*4 
... 
17 
23 
26 
27 
20 
11 
10 
10 
1 1 
3 
1 1 
... 
18 
23 
27 
29 
22 
19 
16 
14 
*3 
4 
9 
*5 
23 
23 
24 
18 
18 
*4 
... 
• • * 
5 
9 
... 
H 
23 
25 
2.5 
21 
17 
H 
12 
12 
6 
9 
... 
14 
24 
24 
24 
21 
»4 
H 
10 
1 1 
7 
8 
... 
1 1 
20 
23 
23 
19 
*7 
i 5 
15 
r 5 
8 
9 
*5 
23 
23 
22 
1 7 
16 
16 
16 
16 
9 
8 
... 
*4 
20 
23 
24 
20 
1 7 
... 
15 
15 
10 
10 
... 
*5 
26 
26 
26 
20 
l 7 
... 
it* 
14 
1 1 
10 
... 
12 
2 3 
25 
26 
23 
18 
16 
J 5 
>5 
12 
7 
8 
«3 
23 
25 
25 
20 
17 
15 
H 
H 
13 
8 
8 
15 
23 
27 
3 i 
29 
24 
i 9 
... 
• •• 
14 
10 
10 
13 
J 9 
21 
23 
21 
20 
J 9 
18 
17 
>5 
10 
10 
1 1 
21 
23 
23 
21 
... 
18 
18 
... 
16 
8 
. •• 
13 
28 
3 i 
33 
. .. 
... 
17 
16 
16 
l 7 
10 
1 1 
14 
20 
22 
23 
*9 
J 9 
18 
18 
... 
18 
... 
23 
20 
32 
3 ° 
3 ° 
20 
18 
16 
H 
*3 
*9 
'7 
16 
zo 
3 i 
34 
29 
21 
18 
*7 
17 
• •• 
20 
J 5 
... 
23 
33 
34 
26 
25 
19 
5 7 
1 7 
... 
2 1 
14 
o»» 
15 
32 
28 
27 
21 
18 
*5 
15 
22 
10 
... 
16 
23 
23 
23 
1 9 
17 
16 
16 
• • • 
2 S 
1 0 
10 
l 9 
29 
29 
29 
21 
18 
17 
16 
• •• 
24 
10 
10 
12 
20 
24 
25 
23 
18 
16 
15 
... 
25 
8 
1 1 
J 5 
29 
35 
32 
3 * 
24 
»5 
12 
11 
26 
1 1 
1 1 
J 5 
24 
24 
24 
21 
17 
... 
11 
... 
27 
10 
10 
H 
22 
25 
25 
18 
15 
13 
... 
« o • 
28 
j6 
... 
21 
25 
25 
25 
’7 
16 
15 
14 
a 4 
29 
10 
1 1 
H 
24 
25 
24 
20 
1 7 
16 
15 
... 
3 ° 
14 
... 
1? 
25 
3 ° 
3 1 
26 
20 
16 
H 
3 » 
10 
e* • 
H 
23 
25 
26 
19 
16 
14 
H 
I 4 
