BRITISH ISLES FOR THE EPOCH JANUARY 1, 19] 5. 
17 
Table II.—Horizontal Force (continued). 
Station. 
No. 
1 
Date. 
Horizontal 
Force 
observed. 
Greenwich 
value. 
Differ¬ 
ence. 
Add 
18,505. 
Provisional 
value for 
epoch Jan.' 
1, 1915. 
! 
Moment 
of 
magnet t 
at 0° C.! 
Carstairs .... 
15 
1914. 
Sept. 3 
16,775 
18,537 
-1762 
1 
1 
16,743 
768-5 
Fair lie. 
25 
i 
16,578 
18,524 
- 1946 
— 
16,559 
758 • 5 
Ayr. 
4 
„ 5 
16,679 
18,503 
- 1824 
— 
16,681 
758 ■ 8 
Stranraer .... 
50 
„ 7 
16,833 
18,512 
- 1679 
— 
16,826 
758-5 
Dumfries .... 
20 
„ 8 
16,943 
18,532 
- 1589 
— 
16,916 
757-7 
Hawick. 
30 
9 
16,786 
18,512 
- 1726 
-- 
16,779 
758-1 
Carlisle. 
70 
„ 10 
17,000 
18,507 
-1507 
— 
16,998 
758-1 
Appleby .... 
59 
» 11 
17,076 
18,527 
- 1451 
— 
17,054 
758-4 
Whitehaven . 
153 
„ 12 
17,063 
18,518 
- 1455 
— 
17,050 
758 - 9 
Barrow . 
60 
„ 15 
17,237 
18,493 
-1256 
— 
17,249 
758-4 
Giggleswick . . . 
82 
M 16 
17,347 
18,532 
- 1185 
— 
17,320 
758-6 
Stonyhurst . . . 
S 
„ 17 
17,376 
18,528 
- 1152 
— 
17,353 
758-3 
Preston . 
126 
„ 18 
17,430 
18,527 
-1097 
— 
17,408 
758-9 
Manchester . . . 
113 
„ 19 
17,579 
18,535 
- 956 
— 
17,549 
759 - 3 
Leeds . 
103 
„ 21 
17,476 
18,526 
- 1050 
— 
17,455 
759-2 
Chesterfield . . . 
71 
„ 22 
17,781 
18,544 
- 763 
— 
17,742 
758-4 
Newark .... 
118 
„ 23 
17,815 
18,538 
- 723 
— 
17,782 
758-6 
Grantham .... 
84 
„ 24 
17,860 
18,525 
- 665 
— 
17,840 
758-5 
Cambridge .... 
67 
„ 25 
18,190 
18,526 
- 336 
— 
18,169 
758-6 
Cambridge .... 
67 
1915. 
Mar. 24 
18,137 
18,486 
- 349 
18,156 
757-5 
Northampton . . . 
120 
April 2 
18,063 
18,489 
- 426 
— 
18,079 
758-6 
King's Sutton . . 
101 
» 5 
18,178 
18,487 
- 309 
— 
18,196 
757 - 6 
! Kenilworth 
97 
„ 7 
17,971 
18,492 
- 521 
— 
17,984 
758-9 
Malvern .... 
112b 
„ 8 
18,049 
18,477 
- 428 
— 
18,077 
758 - 8 
112c 
n 8 
18,108 
18,527 
- 419 
— 
18,086 
758-4 
112a 
„ 9 
17,991 
18,503 
- 512 
— 
17,993 
758-8 
112d 
„ 10 
18,072 
18,507 
- 435 
— 
18,070 
758-2 
Milford Haven . . 
117 
„ 13 
18,252 
18,529 
- 277 
— 
18,228 
758-3 
i Swansea .... 
143 
» It 
18,335 
18,512 
- 177 
-- 
18,328 
757-6 
Lampeter .... 
102 
„ 15 
17,950 
, 18,508 
- 558 
— 
17,947 
758-2 
1 Cardigan .... 
69 
„ 16 
17,907 
18,488 
- 581 
— 
17,924 
758 - 2 
Aberystwith . . . 
55 
„ 17 
17,891 
18,483 
- 592 
— 
17,913 
759 -1 
Llanidloes .... 
108 
n 17 
17,882 
18,512 
- 630 
— 
17,875 
758-1 
Shrewsbury . 
138 
,, 19 
17,798 
18,485 
- 687 
— 
17,818 
759-1 
Birmingham . 
63 
„ 20 
17,984 
18,500 
- 516 
— 
17,989 
758-2 
Cambridge .... 
67 
„ 22 
18,136 
18,484 
- 348 
— 
18,157 
758 - 3 
Kettering 
98 
June 12 
18,104 
18,501 
- 397 
— 
18,108 
758-2 
Manton . 
114 
„ It 
18,064 
18,478 
- 414 
— 
18,091 
758-4 
Melton. 
116 
„ 15 
18,016 
18,485 
- 469 
— 
18,036 
758-1 
Nottingham . 
121 
„ 16 
17,862 
18,483 
- 621 
— 
17,884 
7.57 - 8 
Loughborough 
109 
„ 17 
17,715 
18,300 
- 585 
— 
17,920 
757-7 
Dublin . 
174 
Aug. 9 
17,461 
18,492 
- 1031 
— 
17,474 
757-8 
Wicklow .... 
200 
„ 10 
17,534 
18,482 
- 948 
17,557 
757-9 
Bagenalstown 
159 
„ 11 
17,645 
18,490 
- 845 
17,660 
757-2 
Kilkenny .... 
181 
„ 12 
17,656 
18,490 
- 834 
17,671 
757-7 
Ballywilliam . . 
161 
„ 13 
17,635 
18,490 
- 855 
17,650 
757-1 
"Wexford .... 
199 
„ It 
17,761 
18,488 
- 727 
— 
17,778 
758-3 
Waterford .... 
197 
„ 16 
17,799 
18,495 
i - 696 
_ 
17,809 
757-7 
Lismore .... 
187 
i 
„ 17 
17,809 
‘ 18,491 
1 
i - 682 
— 
17,823 
757-5 
VOL. CCXIX.—A. 
D 
