774 
BULLETIN OF THE BUREAU OF FISHERIES 
Station 
Date 
Depth 
Salinity 
10035 - - - - — 
Aug. 19,1912 
do 
Meters 
0 
Per mille 
32. 67 
10035 - — - - 
82 
32.65 
Aug. 27, 1919 
do 
0 
32.01 
Do - 
85 
32.09 
do 
10 
32. 14 
Do - 
do 
80 
32.20 
Vachon’s (1918) and Mavor’s (1923) determinations show that the vertical dis- 
tribution of salinity within the Bay of Fundy varies regionally in summer, probably 
Fig. 139.— Vertical distribution of salinity in the deep bowl off Gloucester in July and August of 
different years. O, July 10, 1912 (station 10002); A, August 9, 1913 (station 10089); X. August 
22, 1914 (station 10253); 0> August 31, 1915 (startion 10306). The broken curves mark the 
approximate limits of annual variation 
depending on local and temporal variations in the strength of the tidal streams. 
Where the water is least stirred vertically, and where the surface is least saline 
because most subject to the freshening effect of the outflow from the St. John River, 
the salinity of the upper 40 to 50 meters very closely parallels that of the mouth of 
Massachusetts Bay (fig. 139) and of the western side of the gulf generally, grading 
from this to the vertical uniformity characteristic of the Grand Manan Channel. 
Strong tidal currents are similarly responsible for a close approach to vertical 
homogeneity over German Bank in August as in spring (p. 748) and early summer 
(p. 756), the greatest difference between the surface and the bottom at any of our 
summer stations there being only about 0.3 per mille, as follows: 
