170 



bulletin: museum of comparative zoology. 



On German Bank (Station 10244), likewise, the temperature was 

 almost uniform (9.5°-10°) from surface to bottom, as in previous years 



(1914a, 1915). 



On Georges Bank as a whole (Fig. 3, 4) the vertical range of temper- 

 ature was considerable, with the water coldest on the bottom, and the 

 rate of vertical cooling more^uniform than in most parts of the Gulf 



Meter 

 20 

 40 

 60 

 80 

 100 

 120 

 140 

 160 

 180 

 200 

 220 

 240 

 260 

 280 

 300 

 320 

 340 

 360 

 380 

 400 

 420 

 440 

 460 

 480 

 500 



Temperature, Centigrade 



5= 6 7 8 9 10° 11 12 13 14 15° 16 17 18 19 20° 21 22 23 24 



PiQ 5_ — Temperature sections over the continental slope. Stations 10218, 10220, 

 10233, 10261. July-August 1914. 



(Fig. 2). But Station 10217, over the 150 meter contour on the south- 

 west slope of the Bank is an exception to this rule, its minimum lying 

 at 40-50 meters instead of on the bottom. Locally, on the northeast 

 part of the Bank (Station 10224), the water was so thoroughly mixed 

 by vertical circulation that the temperature was practically uniform 



