59° 58° .^^° _^^Q° . .^.^° ^^° ^,^°. ~^° Ji^° ^,Q° '^9° 48° 47 



Ap' 45° a^' ytr," 



59° 58° 57° 56° 55° 54° 53° 52° 51° 50° 49° 48° 47° 46° 45° 44° 43° . 



Fi(;iKE 9— First cruise, itr patrol, .IcHs/iHrf, 8-lrt April 1950, showinusurfaci' isotherms. 955984 O - 51 (Face p. 20) No. 2 



