844 
BULLETIN OE THE BUREAU OF FISHERIES 
40 meters, with the surface water more dense over the bank (station 10348) than 
over its seaward slope (stations 10349 and 10352), though some doubt exists as to 
the salinity (hence as to the density) at the critical station (10349, p. 992). 
Thus, densities rule lower along the outer edge of the offshore banks, abreast of 
the Gulf of Maine and off Nova Scotia to the eastward, than along the continental 
slope that bounds the banks on the offshore side. The relationship at any given 
date may be of the reverse order, either close to the surface as in July, 1916, or 
Fig. 168.— Density profile crossing the continental shelf in the offing of Shelburne, Nova Scotia, June 23 to 24, 1915. 
Corrected for compression 
along the 100-meter contour, as in July, 1914. However, we have never failed to 
find the surfaces of equal density rising comparatively steeply from the outer part of 
the shelf through the greater part of the depth zone there included, out across the 
edge of the continent between the longitudes of Shelburne, Nova Scotia, and of 
Cape Cod. 
To the east and north of our limits, and especially off the Newfoundland Banks, 
this zone of mixture is not only heavier than the coast water on its inner side (or 
