SURVEY OF THE BRITISH ISLES FOR THE EPOCH JANUARY I, 1891. 
533 
Secular Change, 1886-91. 
Latitude. 
Longitude. 
Decliuation. 
Hip. 
Hor-izontal force. 
Observed. 
Table. 
Observed. 
Table. 
Observed. 
Table. 
f Group A . 
O i 
58 15 
3 45 
-38-0 
-38-7 
-4-5 
— 4'6 
+ 0-0089 
+ 0-0100 
57 23 
5 52 
—36-8 
-39-8 
-3-6 
-5-2 
83 
106 
Ic.s. I. . . 
56 38 
4 22 
-39-2 
-37-9 
— 5'6 
-5-3 
128 
103 
Mean 
57 25 
4 40 
-38-0 
-38-8 
-4-6 
-5-0 
100 
103 
{C.S. 11. . . 
55 24 
3 24 
-36-2 
-,36T 
-6*2 
-5-6 
117 
101 
J Group E . 
54 14 
7 43 
-40-9 
-39-0 
-5-3 
-6-7 
116 
113 
XC.S. V. . . 
54 3 
7 38 
-38-2 
-38-8 
-7-7 
-6-7 
111 
113 
Mean . 
■ 54 8 
7 40 
-39-5 
-38-9 
-6-5 
-6-7 
114 
113 
{C.S. VI. . . 
53 31 
5 35 
-35-9 
-36-9 
-6-6 
-6-5 
106 
109 
f Stonyburst . 
53 51 
2 28 
-32-3 
-34-4 
— 5'6 
-5-8 
70 
100 
C.S. III. . . 
53 24 
2 6 
—35'6 
-33-7 
— 5'6 
-6T 
115 
100 
1^Group C . 
53 19 
0 20 
-31-6 
- 32-3 
— 5'5 
-5-7 
88 
95 
Mean 
53 31 
1 58 
-33-2 
-33-5 
— 5*6 
-5-9 
91 
98 
f C.S. VIII. . 
52 52 
8 12 
-37-8 
-38-8 
-8-9 
-7-2 
107 
116 
\ Group G . 
52 0 
9 30 
-40-5 
-39-4 
-7-5 
-7-8 
112 
120 
Mean . 
52 26 
8 51 
-39-2 
-39*1 
-8*2 
— 7*5 
110 
118 
rC.S. IX . . 
51 42 
4 33 
-34-0 
-34-9 
— 6'4 
-6-9 
102 
110 
< Group F . 
51 36 
4 2 
-38-0 
-34-5 
-6T 
— 6*8 
107 
109 
[c.s. Vil. . 
51 5 
3 8 
-37T 
-33-5 
-7-0 
-6-8 
115 
lo8 
Mean 
51 28 
3 54 
-36-4 
-34-3 
— 6'5 
-6-8 
108 
109 
rc.s. IV. . . 
51 47 
0 46 
-35T 
-31-9 
-6-9 
-6-3 
128 
101 
Kew . . . 
51 28 
0 19 
-30-6 
-31-3 
— 5'6 
-6-3 
91 
100 
[ Group U . 
51 12 
0 34 
-32-8 
-31-4 
-4-5 
— 6'4 
67 
102 
Mean . 
51 29 
0 33 
1 
zo 
GO 
-31-5 
-5'7 
-63 
95 
101 
Mean of means . . 
— o6'4 
—36T 
— o ^ 
-6-3 
105 
106 
