t>)S IS ^10 "i-.J 



*>* -<*, 



^- BERaS. 

 O -GROWLERS. 

 l\V-riCLO ICE. 



APRIL 10-24, mo. 



GENERAL. CHART 



coveRl^40 



ICE PATROL 



SHOWING SEA-WATER TEMPERATURES AND VARIOUS CONDITIONS IN VICINITY 



GRAND BANKS 



ISOTHERMS BASED ON 

 ']i>d TEAAPERATURE REPORTS. 



Figure 6.— Surface temperatures and other conditions. April 10-24, 1930 



18732 — 31. (Face p. 4.) No. 5 



