58" 57* 56° 55' 54° 53° -■■52' 



50' 49° 48° 47° 



3° ::57° 56° 55° 54° 53° 52° 51° 50° "49° 48° 47° 46^^ 45° 44° 43° 



FiQDBE 29.— Fifth oru'je, April 5 to 20, 1937, showing surface irotherms, track of vessel, and ice conditions. Figures indicate date that ice was sighted or reported. 



81047—39 (Face p. 42) No. I 



