47° 46° 45" 44° 43° 



55° 54° 53° 52" 51° 50° 49° 48° 47° 46° 45° 44^ 



FiOTOE 25.-First crals., February 4 to 21. 1937, showing surface isotherms, track of vessel, and ice conditions. Figures indicate date that ice was sighted or reported. 



81041—39 (Face p. 42) No. 1 



