22 
Mr. Christie on the effects of temperature on 
Table of the positions of the Points of Equilibrium corresponding to dif- 
fei'ent temperatures of the Magnets retaining a Magnetic Needle in 
equiUbrio. 18th, 19th, 20th, 22nd June. 
Time of 
commencing 
observation. 
Temperature of 
the Magnets. 
Points of Equilibrium. 
Temperature of 
the Magnets. 
Time of 
concluding 
observation* 
Mean Tempe- 
rature of the 
Magnets. 
Barom. 
1 
Therm. 
attached. 
North. 
South. 
W est. 
East. 
South. 
North. 
South. 
June 
h. 
m. 
0 
0 
0 
/ 
0 
/ 
0 
0 
0 
h. 
m. 
0 
0 
i8 
*9 
24 
55.2 
55 
2 
85 
18 
84 
24 
0 
20 E 
55.6 
55.6 
>9 
32 
55.40 
30.23 
57.10 
19 
47 
74.0 
74 
2 
75 
16 
74 
24 
0 
26 E 
73*5 
73-5 
^9 
51 
73.80 
20 
08 
55-5 
55 
3 
85 
36 
84 
32 
0 
14 E 
55-5 
55-3 
20 
14 
55.40 
*9 
7 
25 
56.0 
55 
0 
83 
08 
82 
06 
0 
06 E 
55*8 
55.0 
7 
30 
55-45 
7 
52 
64.6 
64 
3 
77 
38 
77 
20 
0 
00 
64-3 
64.0 
7 
56 
64.30 
30.17 
55-3 
8 
16 
74*4 
74 
2 
73 
28 
72 
58 
0 
00 
73*5 
73-5 
8 
21 
73-90 
8 
40 
64.7 
65 
0 
77 
44 
77 
06 
0 
12W 
63*7 
63*7 
8 
47 
6.}-. 28 
9 
01 
55.6 
55 
8 
82 
34 
81 
30 
0 
12W 
55»3 
55-5 
9 
04 
55-55 
30.17 
55-7 
*9 
25 
55.2 
54 
8 
84 
12 
83 
02 
0 
18 E 
55-5 
55-1 
^9 
29 
55 -J 5 
30.11 
56.75 
19 
50 
67-3 
66 
5 
77 
26 
76 
44 
0 
22 E 
66.8 
66.4 
>9 
55 
66.75 
20 
*7 
29 
5*-3 
50 
0 
85 
16 
85 
H 
0 
14 E 
51*3 
50.0 
>7 
34 
50.65 
0 
• 
0 
60.4 
17 
SO 
56.8 
55 
0 
81 
46 
81 
28 
0 
26 E 
56.6 
54.8 
17 
55 
5 S- 8 o 
18 
*4 
51-7 
51 
I 
84 
44 
84 
38 
0 
16 E 
51.6 
51.1 
18 
19 
51-35 
18 
40 
57.6 
57 
0 
80 
42 
80 
46 
0 
20 E 
57*4 
56.8 
18 
46 
57.20 
22 
18 
01 
54-7 
53 
7 
82 
52 
82 
46 
0 
10 E 
54-5 
53-4 
18 
06 
54-08 
30.16 
55-3 
18 
22 
52.0 
51 
0 
85 
10 
85 
14 
0 
10 E 
51.6 
50.8 
18 
28 
51-35 
18 
48 
56-3 
56 
0 
82 
08 
81 
40 
0 
14 E 
55.8 
55-7 
18 
53 
55-94 
Table of the Magnetic Intensities corresponding to different Temperatures 
of the Magnets. 
Mean Tempe- 
rature of the 
Magnets. 
DifF. of Temp, 
in successive 
observations. 
Mean of the 
observed values 
of p. 
Magnetic inten- 
sity or value of 
F 
M* 
Diff. of succes- 
sive values of 
F 
m’ 
Variation of 
F 
for IP Fah. 
M 
F 
or A . 
M 
0 
55-40 
73-80 
55-40 
55-45 
64.30 
73-90 
64.28 
55-55 
55-*5 
66.75 
50.65 
55-80 
5 »- 3 S 
57.20 
54- 08 
5 *- 3 S 
55 - 94 
4-18.40 
— 18.40 
4- 8.85 
4 - 9.60 
- 9.62 
- 9-73 
4-11.60 
+ S-I5 
- 4-45 
4 - 5.85 
- 2.73 
+ 4-59 
0 ' 
84 51 
74 50 
85 04 
82 37 
77 29 
73 ^3 
77 25 
82 02 
83 37 
77 05 
85 15 
81 37 
84 41 
80 44 
82 49 
85 12 
81 54 
222.8859 
220.6103 
222.91 I 3 
222.5640 
221 .4144 
220.0549 
221 . 3962 
222.4610 
222.7217 
221 .3013 
222.9322 
222.3848 
222.8660 
222.2080 
222.5974 
222.9263 
222.4377 
— 2.2756 
4-2.3010 
— 1 . 1496 
- 1-3595 
-+-i. 34‘3 
-f 1 .0648 
— 1 .4204 
-0.5474 
4-0.4712 
—0.6580 
-+-0.3289 
—0.4886 
0.1237 
0.1251 
0. 1299 
0. 1415 
0. 1394 
0.1220 
0. 1 224 
0.1063 
0.1059 
0.1125 
0. 1203 
0. 1064 
