the intensity of magnetic forces^ ^c. 
29 
1 . Table of the increments in the Azimuths of the Points of Equi- 
librium corresponding to a decrement of 1° in the Temperature 
of the Magnets, ivith their several orders of differences, calcu- 
lated at intervals of 80' in the Azimuths from 77® to 86° ; the 
distances of the centres of the Magnets from the centre of the 
Needle being 21.21 inches. 
<p 
A <p 
A* (p 
A® (p 
A 7 ^ 
o / 
77 oo 
30 
78 00 
30 
79 00 
30 
80 00 
30 
81 00 
30 
82 00 
30 
83 00 
30 
84 00 
30 
85 00 
30 
86 00 
26.455 
27-443 
28.523 
29.707 
31 .01 1 
32.455 
34*063 
35-862 
37-887 
40.185 
42.820 
45.872 
49.450 
53 - 7'3 
58.895 
65.362 
73.730 
85-193 
102.502 
0.988 
1 .080 
1.184 
1.304 
1.444 
1 .608 
1.799 
2.025 
2.298 
2.635 
3.052 
3.578 
4.263 
5.182 
6.467 
8.368 
1 1 .463 
17.309 
/ 
0.092 
0. 104 
0.120 
0. 140 
0. 164 
0. 191 
0.226 
0.273 
0.337 
0.417 
0.526 
0.685 
0.919 
I .285 
I .901 
3.095 
5.846 
/ 
0.012 
0.016 
0.020 
0.024 
0.027 
0.035 
0.047 
0.064 
0.080 
0.109 
0.159 
0.234 
0.366 
0.616 
1.194 
2.751 
/ 
0.004 
0.004 
0.004 
0.003 
0.008 
0.012 
0.017 
0.016 
0.029 
0.050 
0.075 
0.132 
0.250 
0.578 
1.557 
y 
0.013 
0.021 
0.025 
0.057 
0.118 
0.328 
0.979 
/ 
0.032 
0.061 
0.210 
0.651 
