EXPLOEATIONS^ WESTERN ATLANTIC, STEAMER BACHE, 1914. 23 



northwest, right across the area traversed by the Bache, which has no 

 counterpart at the higher level. Its outline forbids the assumption 

 that it can be northern water, unless in the form of an upwelling. How- 

 ever, the existence of such a tongue depends on the temperature read- 

 ing at station 10171, and as this is not accompanied by correspond- 

 ingly low salinity, but the contrary, it is natural to wonder whether 

 it is correct. Discarding this one reading, the warm (10°) water 

 would hardly be indented on the southeast (fig. 20), and the tempera- 

 ture curves would agree much more closely with the salinities. The 



CAPE HATTER 



Fig. 19.— Salinity at 600 meters. 



lowest temperatures at this level were off Cape Hatteras (4°-5°) and 

 off the Bahama Bank, and it is probable, though not certain, that 

 there was a continuous belt of cold water all along the continental 

 slope. Salinity (fig. 21) like temperature at 1,000 meters was highest 

 northwest and west of Bermuda, with a similar slight indentation by 

 fresher water on the southeast. Although the salinity, unlike the 

 temperature, is practically uniform over a considerable area east and 

 northeast of the Bahama Bank— i. e., affords no evidence of upwelling 

 on the slope — this apparent difference is not essential, because the 

 comparative uniformity of salinity below 1,000 meters makes it a far 



