54' 53" 52° 51° 50° 49' x^AQ" 47° 46° 45° 44° 43° 



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



ace isotherms. Ice conditions, and track of patrol vessel June 23-29, 1934. Isotherms are based on 665 temperature reports. Numbers indicate day on which ice was reported. Noon positions are shown by black circles. 



98591—35. (Face p. 18.) No. 7 



