376 MR. A. W. RtiCKER AND DR. T. B. THORPE ON A MAGNETIC 
647. Thetford. See “ 1890 Memoir,” p. 194. 
648. Thirsk. See “ 1890 Memoir,” p. 195. 
649. Thorne. August 15, 1889 ; R (60, 74). Lat. 53° 37' 4” ; Long. 0° 57' 30''. 
On the W. side of a road which runs N.E. from the town, about 100 yards S.W. 
of the point where Lands End Lane runs into it. 
Declination. 
2. 
G.M.T. 
f. 
^0- 
h. m. 
+ 4 47 
h. ra. 
17 4 
IK 21-1 
18 11-9 
Inclination. 
Needle. 
G.M.T. 
0. 
0^. 
1 
2 
h. m. 
17 .t? 
18 14 
6°9 OT 
68 57-5 
0 i 
08 57-2 
Horizontal Force. 
G.M.T. 
H. 
Ho- 
V 
h. m. 
17 24 
1'7259 
1-728.5 
650. Tilney. See “ 1890 Memoir,” p. 195. 
651. Tintern. See “ 1890 Memoir,” p. 232. 
