792 
BULLETIN OF THE BUREAU OF FISHERIES 
In 1922, also, the upper 50 meters was least saline in the northern side of the 
bay, as might be expected if the general anticlockwise eddy enters it. This is 
probably the usual state at the end of the summer, also, unless temporarily interrupted 
by the offshore winds, when temporary upwellings may be responsible for surface 
salinities higher in the northern side of the bay than in the southern side (so confus- 
ing the picture), as appears on the July profile for 1916 (fig. 155). 
Our own cruises do not afford summer profiles for the Bay of Fundy ; but Mayor 
(1923) gives several such for August, 1919, cross-cutting the bay at intervals, all of 
which show the upper strata of water on the whole salter in the southern (Nova 
Scotian) than in the northern (New Brunswick) side. This distribution, as Mavor 
has brought out, corresponds to a tendency for the outpouring discharge of fresh 
water from the St. John River to spread southwestward along New Brunswick, while 
Meter 0 
20 
40 
60 
80 
100 
Fig. 155. — Salinity profile crossing Massachusetts Bay from the eastern point, Gloucester to Cape 
Cod, just inside Stellwagen Bank for, July 19, 1916. The broken curve gives the contour of the 
bank (stations 10340 to 10342) 
the salter water (32 to 32.5 per mille) tends to bank up against Nova Scotia, giving 
a marked obliquity to the isohalines. In the bottom of the trough of the bay 
Mayor’s profiles show the saltest and coldest water (33 to 33.1 per mille) as a lon- 
gitudinal ridge, which he explains (Mavor, 1923, p. 364) as due to a rotation of the 
deeper water around this locality as a center. Concentration of the lowest salinities 
in the northern side also appears in the densities on profiles of the lower part of the 
bay for August, 1914 (Craigie, 1916a), proving this the usual summer state. 
The characteristic contrast, below the surface, between the high salinity of the 
Atlantic basin and the much less saline water of the continental slope and shelf is 
brought out graphically for the summer months by the profiles (figs. 156 to 158) 
for 1914. Whether in July (figs. 156, 157) or in August (fig. 158), the successive 
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