PHYSICAL OCEANOGRAPHY 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. 
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 curves 
are assumed 
Apparently this drift was still in operation at the date of our May cruise in 1915 
(the 4th to the 10th) . Had 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 
