[ 220 ] 
A Table of the Variations of the Magnetic Needle, 
as obferved on Board His Majefty’s Ship Montagu, 
in the Years 1760, 1761, and 1762, by Mr. 
David Rofs ; and communicated by Mr. William 
Mountaine, F. R. S. 
Time when. 
Latitude 
ILong. 
ft . Lon. 
Variation. 
1760 April 12 
Off Bell-Ifl 
e and Grois. 
O 
J 9 
11 W. 
26 
O 
43 
23 N. 
0 
I I 
15W. 
18 
51 w- 
29 
40 
20 N. 
13 
39 W. 
*9 
1 1 vv. 
May 2 
40 
1 8 N. 
18 
36 W. 
i 7 
oW. 
5 
34 
44 N - 
21 
42 w. 
14 
30 vv. 
6 
3 i 
38 N. 
22 
25W. 
'4 
I5W. 
7 
3 ° 
7 N. 
23 
I 2 W. 
13 
9 
28 
51 N. 
25 
39 W. 
10 
4 w. 
10 
27 
2 N. 
28 
40 w. 
10 
30 w. 
1 1 
26 
10 N. 
3 ° 
30 w. 
10 
16 W. 
12 ■ 
25 
9 N. 
32 
37 W. 
7 
10 w. 
13 
2 4 
3 2- 
34 
14W. 
5 
59 W. 
14 
22 
51 N. 
35 
51 w. 
5 
0 w . 
15 
21 
40 N. 
37 
33W. 
4 
20 W. 
J 7 
J 9 
8 N. 
41 
27 w. 
1 
30 VV . 
18 
18 
4 N. 
43 
18W. 
1 
0 VV. 
19 
16 
58 N. 
45 
9 w. 
0 
20 VV. 
20 
16 
7 N. 
46 
5°w. 
0 
3 ° E * 
21 
! 4 
52 N. 
48 
39 w * 
1 
7 E - 
22 
13 
38 N. 
5 ° 
28 W. 
1 
59 E - 
23 
*3 
13 N. 
5 i 
48 W. 
2 
12 E. 
25 
*3 
30 N. 
5 6 
5 W. 
3 
45 E - 
26 
*3 
10 N. 
57 
50 w. 
3 
58 E. 
