140 THE ROYAL SOCIETY OF CANADA 
COMPUTATION OF DIP 
Station : Ashe Inlet. Date: September 24, 1909. 
Method; Dip in two L planes 
Needle 5 (D and R) 6 (D and R) 
Plane A B A B 
o ’ o LA o , o LA 
Ob’d. I 85 30-2 86 10-2 85 25-8 86 6-6 
Log tan Ila 1:10434 1-09729 
“~~ cot Ib 8-82573 8-83249 
© tan A 2: 93007 9:92978 
A 40 24-4 40 23-3 
Mean A 40 23-8 
Log cos A 9-88171 9-88171 
“sin A 9-81163 9-81163 
©) tank 0-98605 0; 98590 0:97900 0-97914 
I 84 63 84 6-1 84 0-5 84 0-5 
Mean I 84 3-4 
COMPUTATION OF INTENSITY. 
From 
Loaded Dip and Deflections 
Station : Ashe Inlet. Date : September 24, 1909. 
Method; Dip in two | planes 
Distance SD LD 
Plane A B A B 
Ob'd I 85 19-2 85 58-6 85 15-7 85 57-4 
Log ob’d F 9- 79660 9-S80661 9- 79687 9-80716 
“nein 9-99855 9-99893 9-99852 9-99891 
i. Z 9-79515 9-80554 9-79539 9-80607 
Z 0- 62395 0- 63906 0- 62430 0- 63984 
Mean Z 0- 63179 
° [4 
: 80 3-4 
Log Z 9- 80057 
— ese i 0- 00234 
paral te 9-80291 
F 0-63520 
COU 9-01746 
AE 8-81803 
H 0- 06577 
The constants for D. T. M. C. I. Magnetometer No. 8 were sup- 
plied with the instrument and are as follows 
For r==80-0117 cm.at 20° cent log C —5-87608 
“ r—35 é 0062 “ “ “ “ “ “ =) > 67370 
“ r= 5-0057 “ “ “ “ “ “ —)5- 49859 
fort, log Clog C,, + (20-t) 0-0000235 
Temperature coefficient  q—0-:00037 per degree centigrade 
p—3 +33 
Distribution coefficients P—+14:67, Q— + 23-7 
Induction de 
