942 



BULLETIN OF THE BUREAU OF FISHEBIES 



The ixnplication of a dynamic contour of this sort in the deeps of the gulf, com- 

 bined with the effect of the confining slopes and with this consumption in the inner 

 part, is obvious; it provides a propulsive force to pump into the gulf the slope water 

 with which the offing of the Eastern Channel is kept supplied — also dynamically — 

 from the source of manufacture to the eastward (p. 847). 



iS'.rS' 



../ 



67" 



Fio. 191.— Distribution of density at the surface of the gulf, April 6 to 20, 1920 

 APRIL 



The progressive freshening of the surface, which takes place along the northern 

 and western shores of the gulf with the advance of spring, results in the development 



