378 Mr. Christie on the diurnal deviations of the 
The agreement in the general character of these with that 
of the observations from five o’clock till eight, will clearly 
lead us to infer that the changes observed in the positions of 
the points of equilibrium during that time, arose from a 
diminution of the terrestrial forces, as well as a change in their 
directions : had the agreement in all the observations them- 
selves been complete, we must have inferred that diminution 
of intensity was the sole cause of the changes. After these 
observations, the magnets were restored to their former dis- 
tances for those at nine and ten o'clock. 
IV. 
The Points of Equilibrium nearly N. 25° TV., N. 25° E., S. 3° E. ; the 
line of the axes of the Magnets coinciding with the meridian ; 
distances 11 .655 inches. Compass No. II. 
May 15. 
Time. 
Points of Equilibrium. 
N. W. 
N. E. 
S. E. 
h. m. 
O / 
O t 
6 00 
f *3 10 
19 30 
4 40 1 
7 00 
12 35 
*7 45 
6 45 \ 
8 00 
no point 
15 00 
no point J 
9 00 
13 10 
17 10 
5 °5 
0 0 
0 0 
o - 
1 1 00 
15 00 
6 50 
10 20 
13 00 
2 00 
Noon. 
1 00 
17 50 
15 25 
0 15 
2 00 
19 10 
15 55 
0 50 
3 00 
20 00 
17 50 
0 40 
4 00 
20 20 
20 40 
2 30 
5 00 
21 00 
22 20 
3 10 
6 00 
22 00 
24 00 
3 00 
7 00 
23 5 ° 
24 40 
2 00 
8 00 
25 15 
26 20 
2 25 
9 00 
25 15 
26 20 
2 00 
10 00 
25 00 
26 05 
2 05 
May 1 6. 
Points of Equilibrium. 
21 
21 
21 
w. 
N. E. 
S. E. 
/ 
O / 
0 / 
00 
26 40 
4 °5 
5 ° 
25 40 
5 20 
00 
26 45 
5 4 ° 
00 
25 35 
4 00 
30 
21 30 
3 10 
40 
18 50 
0 50 
25 
19 40 
S. 1 10 W. 
15 
18 45 
S.o 15 W. 
55 
*9 35 
S. 0 20 E 
00 
21 00 
1 20 
20 
22 30 
2 15 
30 
24 00 
2 25 
10 
26 55 
4 35 
5 ° 
25 06 
2 26 
May 17. 
Points of Equilibrium. 
N. W. 
O / 
21 45 
20 O5 
18 35 
18 55 
19 05 
18 00 
22 05 
21 30 
21 00 
20 00 
j 9 50 
21 10 
21 30 
22 54 
24 00 
26 20 
26 36 
N. E. 
O / 
24 35 
23 40 
24 00 
22 35 
22 15 
19 40 
20 20 
21 05 
20 3c 
21 25 
20 00 
2 1 50 
22 40 
24 30 
26 40 
27 00 
28 05 
S. E. 
O * 
3 00 
4 20 
5 °5 
55 
20 
00 
55 
5° 
26 
20 
55 
00 
20 
40 
20 
00 
00 
* These observations were made with the distances 11.725 inches. 
