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bulletin: museum of comparative zoology. 



Salinities were much lower in the Western Basin of the Gulf of ]Maine 

 than over the continental slope (Fig. 26) ; and the general increase of 

 salinity, from north to south across the profile, above the level of 

 Georges Bank, contrasted with the horizontal uniformity of salinity 

 in this part of the Gulf below that depth, shows how effective a barrier 

 the Bank is to anv mixture of the two waters below it. At the eastern 



Fig. 27. — Salinity profile crossing the eastern end of Georges Bank from the Gulf 

 of Maine (Station 10225) to the continental slope, July 22-23, 1914. 



end of the Bank there is less contrast in salinity (Fig. 27), just as there 

 is in temperature between Gulf water, and the water over the conti- 

 nental slope, and for a similar reason. Gulf water being considerably 

 Salter, especially near the bottom, water south of the Bank fresher, 

 than further west. At the western end of the Bank the profile (Fig. 

 26) reaches practically undiluted Gulf Stream water, with salinities 



