408 • Mr. Christie on the magnetism of 
The equations (9) and (10 therefore become 
nPan A' 3 sin. 2 X + .059 x (3 cos. 2 ?; + i) / n . 
® 52 cos. 70° 15' Wc/ ’ 
A 3 s^n- 2 X - . 059 y (3 cos. 2 x + i) / > 
lan. 6^ — 52 cos. 70° 15' c''* 
In the same manner the observations in Table B give, 
= 48.0278 = 48 nearly, and-^ = .059039 = .059 
nearly. 
The equations (9) and (10), in this case, become. 
_ 3 sin. 2 X +. 059 X (3 cos. 2X41) 
48 
Tan 6 3 sin. 2 X — . 059 X (3 cos. 2 X + i) 
’ ' 48 
( 9 ,)’ 
Table of the values of^', 9,, and 0' — 0^ computed from the equations (9^), ( 10^) 
compared icith their observed values in Table A. 
X 
fi' 
6 
Observed. 
Computed. 
Difference. 
Observed. 
Computed. 
Difference. 
Observed. 
Computed. 
Difference, 
0 
0 / 
// 
0 / 
// 
0 
/ // 
0 
/ 
/) 
0 
46 
// 
0 
/ // 
/ // 
0 
f It 
0 
/ 
/' 
0 
+ 47 
55 
+ 46 
10 
— 
1 45 
47 
55 
— 
10 
4 
I 45 
I 
35 50 
I 
32 20 
— 
3 
30 
10 
3 57 
20 
4 04 
26 
+ 
7 06 
2 
26 
40 
2 
36 
30 
4 
9 50 
I 
30 40 
1 
27 56 
— 
2 
44 
20 
6 57 
00 
6 53 
20 
— 
3 40 
5 
40 
00 
5 
38 06 
— 
I 54 
I 
17 00 
I 
15 H 
— 
I 
46 
30 
9 03 
25 
8 52 
50 
— 
10 35 
8 
03 
45 
7 56 
22 
— 
7 23 
59 40 
56 28 
— 
3 
12 
40 
9 56 
20 
9 49 
43 
— 
6 37 
9 
19 
30 
9 
^5 
34 
— 
3 56 
36 50 
34 09 
— 
2 
4 » 
50 
9 31 
20 
9 38 
02 
+ 
6 42 
9 
21 
25 
9 
27 
16 
4 
5 5 ^ 
09 55 
10 46 
4 
0 
S' 
60 
8 05 
15 
8 18 
59 
+ 
13 44 
8 
16 
^5 
8 
30 
17 
4 
14 02 
— 
1 1 00 
— 
II 18 
— 
0 
18 
70 
5 5 * 
35 
6 00 
57 
+ 
9 22 
6 
19 
40 
6 
30 
34 
4 
10 54 
28 05 
— 
29 37 
— 
I 
32 
80 
2 51 
25 
2 59 
35 
4 
8 10 
3 
31 
0 
3 
41 
26 4 
■ 9 56 
40 05 
— 
41 51 
— 
I 
46 
90 
— 22 
25 
— 23 
05 
0 40 
+ 
22 
25 
4 
23 
05 4 
0 40 
. I 1 
44 50 
46 10 
I 
20 
, 1 
