744 



BULLETIIT or THE BUREAU OF FISHERIES 



Cape Ann (p. 948), and that land water does not fan out from the coast of Maine or 

 from the Bay of Fundy toward the center of the gulf. 



The evidence of salinity is positive in this connection, there being no source for 

 surface water less saline than 30 per mille within the Gulf of Maine other than the 



Portland 



■•\. 





a& 



61. 



■ w 



Fio. 120.— Salinity at the surface, May 4 to 14, 1915, combined witli May 4 to 17, 1920 



rivers tributary to it. Once past Massachusetts Bay, however, the May isohalines 

 for 1920 (stations 20125 to 20129) very clearly show the freshest coast water (32 per 

 mille in this case) spreading out from Cape Cod across the southwestern part of the 

 basin about as far as Georges Bank, which seems to. have bounded it at the time in 

 this direction (fig. 120). 



