52 



51 



50' 



49 



48' 



AT 



46 



45' 



117241 

 54° 



53° 



52° 5»° 



50° 



49° 



48° 



47° 46° 



45° 



.1 . 



Jt s~^ „« C 



"2 "^5 "2 £ 





S*S ~a '% "~ =s -i "i "i "I 



:^l 



\ ■ 



2 ~g "*S ~5 *B ~§ *S J " = 



=1 «"i =1 »| =i =1 =1 =1 



43° 42° 



— . ^*^^2° 



-^y 



-,50° 



49° 



t48° 







S B « 



So So is'^ ; 



* 3t =« 



JULY 



43 



42' 



4) 



47° 



t46° 



45° 



43° 



t42° 



41' 



40°3 



54° 



53° 52° 



5r 



50° 49° 48° 47° 



46° 



45° 44° 43° 



ICE PATROL CHART 



.40° 



42° 



1 17341 



FiGUKE 52. Xiiincrical dificst of data [u'l-t incut to the July iioiiual (iyiiainic topography. 



58 



