52 



bulletin: museum of compaeative zoology. 



found that the surface temperature had dropped from 59° to 50.5°; 

 the bottom water on the contrary, had risen to 49.2°, the entire drop 

 taking place within ten fathoms of the surface. 



Temperature sections from Cape Ann to\A'ard the Bay of Fundy, 

 (Stations 11, 19, 39, and 35, fig. 12, and Stations 8, 14, 15, 21, fig. 13), 

 exhibit a gradation similar to that seen on the line Cape Ann-Nova 

 Scotia, the curves growing progressively straighter and straighter 



Fail 





 5 



10 

 IS 

 20 

 25 

 30 

 35 



45 



50 



55 



60 



65 



70 



75 



80 



85 

 90 



Fig. 12. — Temperature sections. Cape Ann to the Bay of Fundy, Stations 

 11, 19, 39, 35. 



toward the northeast. Station 11 is practically identical with Sta- 

 tions 2, 23, and 24; Stations 33, and 35 with Station 29; Station 39 

 is intermediate. 



It is interesting to compare the temperature conditions over the 

 three off-shore banks which we ^'isited, Piatt's, Jeffre^^'s, and German, 

 (fig. 14) with one another and with those of the deep b^^sins. The 

 first is about fifty miles northeast of Cape Ann. The surface tempera- 

 ture here was 64°, the bottom, reading in 45 fathoms, 40.8°, and its 

 temperature cur^•e (fig. 14) is almost precisely identical with that of 

 Stations 2 and 11. This, of course, shows that the bank had no dis- 

 turbing effect on the water above it. On Jeffrey's Bank, some thirty- 



