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BULLETIN OF THE BUREAU OF FISHERIES 
locally increasing the density at the surface but correspondingly decreasing that of 
the underlying strata. 
At some time between the last of March and the first of May — the exact date 
varying from year to year (p. 832) — the Nova Scotian current, flooding westward 
Fig. 194. — Distribution of density at the surface of the gulft or May, 1915 (underlined), and May, 1920, combined 
past Cape Sable into the gulf, is reflected by the development of a corresponding 
tongue of low surface density extending westward from the offing of the cape. 
Thus, in 1919 the eastern half of the Cape Sable-Cape Cod profile proved less dense 
than the western in the upper 50 meters at the end of March and again at the end 
