54 
MR. A. W. RUCKER AND UR. T. E. THORPE OK A MAGNETIC 
35. Blair Athol. June 15 and 16, 1891. W. (70, 94). Lat. 56° 46'4"; Long. 
3° 50' 40". Near the centre of the field to the N. of the lodge at the main 
entrance to the grounds of Blair Castle. 
Declination. 
Date. 
V 
G.M.T. 
C, 
d- 
h. m. 
h. m. 
■ 
O 1 
O / 
June 16 . . . 
-2 1 
+ 1 48 
11 54 
14 66 
20 36-5 
20 34-2 
20 39'0 
Inclination. 
Date. 
Needle. 
G.M.T. 
0. 
June 15 . . . 
1 
h. m. 
12 50 
70 53-5 
0 / 
70 53-5 
2 
13 24 
70 52-5 
Horizontal Force. 
Date. 
G.M.T. 
H. 
Ho. 
h. m. 
June 15 . . . 
D 
14 38 
„ 15 . . . 
V 
15 18 
1-6015 
1 •^AA7 
„ 16 . . . 
V 
12 15 
1-6014 
i DGUr 
36. Boat of Garten. See “ 1890 Memoir,” p. 100. 
37. L. Boisdale. See “ 1890 Memoir,” p. 101. 
38. Braemar. July 30 and 31, 1891. W. (70, 94). Lat. 57° 0' 42"; Long. 3° 23' 34". 
About 300 yards S.S.W. of Old Mar Castle. The first set of Horizontal Force 
observations were alone used in deducing the Disturbing Forces. 
Declination. 
Date. 
V 
G.M.T. 
5. 
b. m. 
h. Ill. 
O ! 
July 30 . . . 
+ 0 54 
13 49 
20 20-2 
+ 3 39 
16 24 
20 20-7 
