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bulletin: museum of compakative zoology. 



bottom (forty fathoms), where the water was 41.2° as against 43.2° a 

 month later. Station 10058 was about 2.5° warmer than the Cape Cod 

 stations down to twenty fathoms; but at thirty fathoms it was about 

 .5° colder (41.1°); with a minimum of 40.6° at sixty fathoms, below 

 which it warmed slightly; and its curve is almost exactly parallel 

 with that of the nearest August Station (10085), though about 3° 

 warmer at all depths. 



The water on the southwestern part of George's Bank (Station 

 10059) was nearly uniform from the surface downward, in tempera- 

 ture as well as in salinity (p. 188). 



Mean temperature. If all the temperature curves in the Gulf were 

 parallel, a direct comparison between them would show which regions 

 were potentially warmest, which coldest. But they are so distorted 

 by greater or less active vertical circulation, that it is only by calcu- 

 lating the mean temperatures for each station that light can be 

 obtained on this subject. The mean temperatures for the zone be- 

 tween the surface and the fifty fathom level are given in the following 

 table : — 



The mean between the surface and forty fathoms, was 46° at Station 

 10057; 48.5° at Station 10086; 48.8° at Station 10106; the thirty 

 fathom mean was 47.6° at Station 10095 ; 55° at Station 10059. Thus 

 the upper fifty fathoms was coldest, as a whole, on the western side 

 of the Gulf. Passing northeastward along the coast, the mean tem- 

 perature rose from 46.3° near Cape iVnn to 48.4° off Cape Elizabeth, 

 49° off Penobscot Bay, 48.4° off Mt. Desert Rock and 50.3° over the 

 northern end of the basin. In the centre of the Gulf it was generally 

 49°-50°, except for one cold Station (10092) . Off the mouth of the Bay 

 of Fundy the mean (50.3° at Station 10096) was as high as anywhere in 

 the Gulf. But the upper fifty fathoms over the slope of German Bank 

 (Station 10094), and the whole column of water on the Bank itself 



