82 



AKSEL S. STEEN. TERRESTRIAL MAGNETISM. [NORW. POL. EXP. 



CM 



V 



3 



-. 

 00 



V 



S 



OS 

 CO 



oo 



<* 



en 

 oo 



bo 



a 

 o 



S $ 



a f 



iH s^ co co 

 cs os in in 

 a o -o 



in as ? 



1 s 8 a 



<S ?3 " $C 



CO CO S^ ^p 



3 S 8 8 



O5 00 



$ s 



S 



oo oo 

 - 



S? 55 S 9 



c^ o? ^ S 



o 



^jl SI CO ^ 



~. ~- LO LA 



0> O> 



Lf? LQ 5-J CO 

 aj ^ o 'd 



S 



I 



o 



c 



CO O 



r i 



CO I 



S 05 

 OS O 



S 



CO O 



CO 00 



8 



2 



6s ^ 



O O5 00 



O O5 00 



o o do 



O OS 00 



o do 



do 



o o do 



5* 60 



85 



do 



a 



i 

 Is 



a 



A 



a 



PH 



a 



I 

 I a 



Ig 

 I- 



$ 



59 d) 

 a 







CO .S 



> a 



to CO 



os" 3 

 <n 



4-c '3 



O 



So tf 



" 01 "S 



a c -S 



o 

 a> -j3 m 



^= s 



H fc -- 



Je*-, 

 

 o g 



g.i 



, 



3 

 * 



m B 



a J J 



cd ^- H^ 







III 



o 

 e^ S~ c 





JS 



