EXPLORATIONS, WESTERN ATLANTIC, STEAMER BACHE, 1914. 19 
east this strikingly saline layer is much thinner and it is twice inter- 
rupted (stations 10189 and 10185), though it once more appears near 
Bermuda. Over the northern end of the Bahama Bank the 36.5°/,, 
water is overlaid by fresher water, as described for the Jupiter 
Inlet profile across the Florida current (p. 32). Below 1,200 meters 
there is very little further decrease in salinity: At 1,800 meters it 
ranges from 34.96 to 35.01°/,. only, and judging from what. is 
known of Atlantic bottom water (Murray and Hjort, 1912; Nansen, 
1912), it is probably practically uniform below that depth. Though 
the curve of 35°/,, suggests a slight upwelling of this abyssal 
water in the center of the profile, the entire range of variation of 
Stations 
Stations 
Fic. 13.—Temperature profile of the upper 1,800 Fic. 14.—Salinity profile of the upper 1,800 meters. 
Wik 
meters, on a line running 200 miles southwest on a line running 200 miles southwest from 
from Bermuda. Bermuda. 
salinity below the 1,000-meter level is so small that it is doubtful 
whether this was really the case. Certainly, temperature suggests 
nothing of the kind but just the reverse. 
The relationship of these profiles to one another may be illustrated 
further by charts of the temperatures and salinities at the 200, 600, 
1,000, and 1,800 meter levels. 
At 200 meters salinity was remarkably uniform, the extreme range, 
except for the cool, fresh water next the coast Gunton 10158, p. AGy. 
being from 36.42°/.. to 36.55°/oo only. The temperature range Gig: 
17) was also very small, 18.1° to 19.3° over most of the area. 
Next the coast off Chesapeake Bay it was much colder (11.2° at 
