58° Sr 56° 



55° 54° 53° 52° 5 f 5 0° '49° 4Q° J^^' 4 6° ^ ^ ^ 45° ^ ^° /^S' 



59° 58° 57° 56° 55° 54° ' 53? 52° 51° 50° 49' 



48° 47° 46° 45° 44° 43° 



FiouBE 4.-Ice conditions, AprU 1936. Numbers Indicate day of month Ice was sighted or reported. 14934&— 38 (Face p. 6) No. J 



