EXPLORATIONS^ WESTEE:N' ATLANTIC^ STEAMER BACHE, 1914. 33 



the preceding profile is only fractional, while the surface was more 

 uniform, and the mean surface temperature was fractionally higher 

 (23.7°) along the Jupiter Inlet than the Cape Florida line (23.04°). 

 In the bottom of the channel the water was of practically the same 

 temperature (5.7°) and salinity (34.85Voo) as between Cape Florida 

 and Gun Cay, 100 meters deeper. 



Stations 



Meter 



Fig. 32.— Temperature profile running east from Jupiter Inlet, across the northern end of the Bahama Bank. 



The vertical condensation of salinity and temperature, and the 

 general rise of cold fresh bottom water toward the surface from off 

 Habana to the northern entrance of the channel is illustrated by an 

 artificial profile lengthwise of the axis of the channel (fig. 34), recon- 

 structed from the preceding transverse profiles. Several features 

 deserve mention. The very warm surface water has been sufficiently 

 emphasized. Beneath it lies a band of salter, cooler water (36.5%o 



Stations 



Meter 



Fig. 33. — Salinity profiJe, running east from Jupiter Inlet, across the northern end of the Bahama Bank. 



and 20°) extending the whole length of the profile, and continu- 

 ous in both salinity and temperature with the surface water east 

 of the Bahama Bank (p. 19, fig. 15, 16). Whether it is also con- 

 tinuous with the surface water of the Gulf of Mexico is not certam. 

 Finally, at the northern end of the profile the rise of water of 6°-10° 

 temperature and 34.8-35Voo salinity toward the surface is very 

 evident; but water colder than 5° does not rise up the slope 

 above the 1,100-meter level. Water of this temperature was also 

 63271°— 17 3 



