52 



The barograph curve records no less than 12 depressions for the 

 month. None, except the one that ushered in the first, were par- 

 ticularly deep where the patrol vessels were. Onl}^ three were able 

 to give the ice patrol winds of gale force for as long as 12 hours, 

 being for the most part very brief as well as shallow. 



The fully developed cyclones of large area passed to the northeast 

 over Newfoundland and Labrador, well to the north of the Grand 



Figure 3.— April weather diagram. 



Banks. The depressions that went over the patrol vessel were, 

 many of them, secondaries of the larger Lows. Some of these small 

 storms were noted over the States traveling along more or less parallel 

 to the larger ones. Others, it seemed to the patrol, were born between 

 the Grand Banks and the New England coast, as they were either 

 detected by means of ship reports or not detected at all until they 

 unexpectedly broke. 



