124 
MR. A. W. RtiCKER AND DR. T. E. THORPE ON A MAGNETIC 
Horizontal Force. 
Date. 
G.M.T. 
H. 
Ho. 
h. m. 
Aug. 9. 
D 
(a) 
12 9 
1-5223 
1-5177 
V 
(a) 
11 10 
1-5226 
„ 10. 
D 
V 
(«) 
(c) 
12 38 
13 10 
1-5265 
1-5252 
1-5211 
„ 9. 
V 
G) 
15 36 
1-5906 
1-5859 
„ 10. 
V 
(G 
11 16 
1-5941 
1-5894 
Note.— The ground at Portree was known to be extremely bad as there is much basaltic rock in the 
neighbourhood. The observations were made with a view of gaining information as to the magnitude 
of the disturbing forces. 
44. Row (Gairloch). July *23, 1888; T. E. T. (61, 83). Lat. 56° 1' 0"; Long. 
4° 46' 50". Near the shore of the loch; Pier end bears due W. (mag.); 
Roseneath House 37° W. of S. ; and Roseneath Point 17° W. of S. (mag.). 
Declination. 
G.M.T. 
C. 
Oo- 
li. m. 
h. m. 
O 1 
O 1 
- 2 23 
10 24 
21 24-4 
12 0 
21 22-6 
21 47-7 
+ 1 16 
13 13 
21 24-0 
Inclination. 
Needle. 
G.M.T. 
0 . 
do- 
1 
h. m. 
12 28 
70 48*4 
O / 
70 51-0 
2 
12 52 
70 47-5 
Horizontal Force. 
G.M.T. 
H. 
Ho. 
D 
h. m. 
11 31 
1-6025 
1-5978 
V 
10 53 
1-6023 
