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bulletin: museum of comparative zoology. 



the mainland. In the northern part of the trough (Station 10104), 

 it was 39.8° at eighty fathoms. 



In the summer of 1912, the water of the Gulf was invariably cold- 

 est at the bottom; but in 1913 the western basin and two stations in 

 the eastern basin (Stations 10092, 10093, Fig. 17) were coldest in 



Fig. 17. — Temperature sections In the Gulf of Maine from Massachusetts 

 Bay to German Bank (Stations 10087, 10088, 10090, 10092, 10093, 10094). 



the intermediate depths; the minimum in the former being 41.3° 

 at fifty fathoms, i. e., precisely the same as the uniform bottom water 

 nearer shore, rising to 43.3° at 100 fathoms, below which level it 

 was uniform dowTi to the bottom (150 fathoms). On the western 



