Table 
The unit is 
Season. 
Summer . 
Equinox . 
Winter 
EARTH’S MAGNETISM AT PAVLOVSK AND POLA (1897-1903). 311 
IIIa.-— Fourier Coefficients of the Lunar Diurnal Magnetic Variations, 
Reduced to the Epoch of New Moon. 
Pola. Declination West. 
(f'001 ; the small corrections mentioned in §§ 5, 6 have not been applied 
at this stage, cf. § 9 ; + denotes increasing transverse force. 
Lunar 
phase. 
a i. 
b\. 
« 2 . 
b 2 . 
a' 3 . 
a 4 . 
h\. 
1 
206 
- 35 
235 
27 
124 
- 25 
-42 
-21 
2 
153 
- 134 
249 
44 
85 
40 
-16 
14 
3 
199 
- 50 
201 
74 
103 
30 
-18 
- 17 
4 
62 
- 174 
147 
17 
123 
- 68 
-17 
■ -20 
5 
46 
- 89 
270 
- 67 
114 
- 39 
14 
- 6 
6 
192 
-206 
185 
4 
92 
8 
-12 
26 
7 
69 
- 135 
259 
16 
109 
• 20 
27 
17 
8 
131 
- 158 
263 
20 
91 
- 4 
-10 
-26 
Mean. . 
132 
- 123 
226 
17 
105 
- 10 
- 9 
- 4 
1 
108 
- 42 
58 
- 18 
37 
- 55 
49 
-46 
2 
46 
- 109 
40 
- 6 
69 
25 
44 
- 12 
3 
74 
- 72 
21 
15 
7 
- 57 
-26 
-59 
4 
64 
- 47 
11 
82 
47 
5 
22 
13 
5 
161 
- 47 
52 
112 
72 
- 16 
12 
0 
6 
114 
- 40 
89 
56 
131 
5 
60 
5 
7 
25 
- 98 
180 
- 16 
38 
- 121 
88 
-19 
8 
91 
- 164 
119 
6 
80 
- 13 
- 6 
10 
Mean. . 
85 
- 77 
71 
27 
CO 
1 
to 
00 
. 
30 
- 14 
1 
- 48 
- 43 
- 108 
77 
- 1 
54 
-61 
51 
2 
- 136 
- 52 
- 14 
27 
- 25 
36 
- 9 
- 5 
3 
- 46 
74 
- 42 
169 
7 
11 
39 
11 
4 
- 32 
- 112 
- 13 
31 
- 22 
2 
18 
7 
5 
- 64 
- 52 
- 58 
29 
- 1 
10 
-16 
-20 
6 
- 75 
- 63 
- 52 
88 
- 29 
17 
17 
21 
7 
- 98 
- 38 
- 9 
25 
- 56 
66 
- 14 
-31 
8 
89 
- 60- 
- 94 
20 
5 
- 38 
19 
- 3 
Mean. . 
- 51 
- 43 
- 49 
58 
- 15 
20 
- 1 
4 
