57"" 56° 55° __54° 53* 52^ 



50° 49* 46° 47° 46° 45° 



59° 58° 57° ^ 56° 55° 54° 53° 52° 51 



FiouBE 31— Seventh cruise, May 9 to 24, 1937, showing surface isotherms, track of 



50° 49° 48° 47° 46° 45° 44° 43° 



id ice conditions. Figures indicate date that ice was sighted or reported. 



81041—39 (Face p. 42) No. 7 



