SURVEY OF THE BRITISH ISLES FOR THE EPOCH JANUARY I, 1891. 501 
Horizontal Force. 
G.M.T. 
H. 
Ho. 
h. m. 
D 
15 39 
V 
14 23 
17311 
17303 
874. Valentia (1) and (2). See " 1890 Memoir,” p. 226. 
875a. Valentia (3). August 20, 1891; G. (60, 74). Lat. 51° 54' 30”; Long. 
10° 18' 10”. On the lawn, 7 yards S. of the Magnet House. 
Declination. 
2. 
G.M.T. 
^0 
li. ni. 
li. m. 
o / 
O 1 
-2 3 
10 54 
22 28-8 
22 33-8 
Inclination. 
Needle. 
G.M.T. 
0. 
do- 
1 
2 
h. m. 
12 3 
12 15 
68 47T 
68 48-3 
68 48-9 
Horizontal Force. 
G.M.T. 
H. 
Ho. 
li. m. 
D 
11 41 
V 
11 15 
1-7529 
1-7515 
8756. Valentia (4). August 19, 1891; G. (60, 74). Lat. 51° 54' 30”; Long. 
10° 18' 10”. In the Magnet House of the Observatory. 
Declination. 
G.M.T. 
a,. 
Fixed mark 
h. m. 
O i 
O 1 
used . . 
11 0 
22 24-0 
22 2y0 
