PHYSICAL, OCEANOGBAPHY OF THE GULF OF MAINE 



751 



relationship just outlined points to a translation of the isohaline for 32 per mille 

 about 100 miles westward from the location occupied by it before the current begins 

 to flood past Cape Sable in appreciable volume. 



¥ 



Portland 



71" 



Ge" 



Fig. 125.— Salinity at a depth of 40 meters, May 4 to 14, 1915 (plain figures), combined with May 4 to 17, 1920 (under- 

 lined figures). The encircled figure in the Bay of Fundy is for May 4, 1917, from Mavor (1923). Dotted curres 

 are assumed 



Apparently this drift was still in operation at the date of our May cruise in 1915 

 (the 4th to the 1 0th) . ITad it not been, and had absorption of the water of low salinity 

 from the east into the general circulation been well advanced, the transition from 

 salinities lower than 32 per mille in the east to 32.6 to 32.8 per mille in the center of the 



