EXPLORATIONS, WESTERN ATLANTIC, STEAMER BACHE, 19144. 93 
northwest, right across the area traversed by the Bache, which has no 
counterpart at the higher level. Its outline forbids the assumption 
thatitcan benorthern 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 
Fic. 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—. 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 
