570 



BULLETIN OF THE BUBEAU OF FISHERIES 



99?0\ 



evidence of a static 

 condition in the bot- 

 tom water rather than 

 one of active circula- 

 tion, marks the precise 

 date when this profile 

 was run as falling be- 

 tween two of the 

 pulses by which this 

 indraft is believed to 

 progress (p. 558), not 

 as coinciding with one 

 of them. Whether 

 such a pulse annually 

 succeeds the slacken- 

 ing of the Nova Sco- 

 tian current remains 

 to be learned, but this 

 is not unlikely. 



In 19 20 the 

 general increase in 

 temperature that in- 

 volves the gulf proper 

 and the western part 

 of its offshore rim from 

 April to May, did not 

 extend to the seaward 

 slope of the latter. 

 There, on the contrary, 

 a change of the reverse 

 order took place from 

 about the 40-meter 

 level right down to 

 the bottom in 150 to 

 200 meters (fig. 38), 

 illustrated by a de- 

 crease in the bottom 

 temperature from 

 11.5° on February 22 

 (station 20045, 150 

 meters) to 8.28° on 

 Maj'- 17 (station 

 20129, 160 meters). 

 Accompanied, as it 

 was, bj^ a correspond- 



