the intensity of magnetic forces y &c. 
35 
4. Table of the decrements in the Azimuths of the Points of Equi- 
librium corresponding to an increment of 1° in the Temperature 
of the Magnets y loith their several orders of differences y calculated 
at intervals of^O' in the Azimuths from 74° to 82°, and at inter- 
vals ofW in those from 82° to 86°; the distances of the centres 
of the Magnets from the centre of the needle being 21.52 inches. 
A 
A^(p 
O t 
74 oo 
30 
75 00 
30 
76 00 
30 
77 00 
30 
78 00 
30 
79 00 
30 
80 00 
30 
81 30 
30 
82 00 
15 
30 
45 
83 00 
*5 
30 
45 
84 00 
*5 
30 
45 
85 00 
*5 
30 
45 
86 00 
/ 
2 I . 249 
21.815 
22.421 
23.071 
23.770 
24.524 
25-338 
26.217 
27. 169 
28.204 
29-334 
30.569 
31-923 
33-414 
35-063 
36.894 
38.936 
40 . 047 
41 .224 
42.474 
43.805 
45.222 
46.733 
48.347 
50.075 
51.928 
53.918 
56.060 
58.371 
60.871 
^ 3 ^S 79 
66.518 
69.717 
/ 
0.566 
0.606 
0.650 
0.699 
0- 754 
0.814 
0.879 
0. 952 
1- 035 
1 . 1 30 
1.235 
1-354 
1-491 
1 .649 
1.831 
2.042 
1.111 
1-177 
1 .250 
1-331 
1.417 
1.511 
1 .614 
1.728 
1-853 
1 .990 
2. 142 
2.311 
2.500 
2.708 
2.939 
3.199 
/ 
0.040 
0.044 
0.049 
0.055 
0.060 
0.065 
0.073 
0.083 
0.095 
0. 105 
0. 1 19 
0.137 
0. 1 58 
0. 182 
0.211 
0.066 
0.073 
0.081 
0.086 
0.094 
0.103 
0.114 
0.125 
0.137 
0. 152 
0.169 
0. 189 
0.208 
0.231 
0.260 
1 
0.004 
0.005 
0 006 
0.005 
0.005 
0.008 
0.010 
0.012 
0.010 
0.014 
0.018 
0.021 
0.024 
0.029 
0.007 
0.008 
0.005 
0.008 
0.009 
0.011 
0.01 1 
0.012 
0.01 5 
0.017 
0.020 
0.019 
0.023 
0.029 
From these tables, interpolating as before, I constructed the 
two following. 
