96 EXPLORATIONS, WESTERN ATLANTIC, STEAMER. BACHE, 1914. 
being practically no previous records for the middepths in this 
region. The discovery that the general distribution of salinity is the 
same as that of temperature—i. e., highest west of Bermuda (except 
on the immediate surface) —is a further corroboration of the upwelling 
of abyssal water toward the Equator. 
THE STRAITS OF FLORIDA. 
The Straits of Florida are historic grounds for oceanographic study, 
thanks to the temperatures taken by the blake (Agassiz, 1888) and to 
the numerous current measurements made by the United States Coast 
and Geodetic Survey, especially by Capt. Pillsbury (1886, 1887, 1889). 
However, it remained for the Bache to obtain satisfactory series of 
Temperature, Centigrade 
4. F £7 9 10°11 12 13 14 15°16 17 18 aoe 20° 21 22 23 24 25° 
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Fic. 22.—Temperature sections on the line Key West-Habana; stations 10197, 10198, 10199, 10200, 10201; 
and off Pensacola, Fla., March 13, 1885 (...-..., Albatross). 
salinities, simultaneous with temperatures. Three profiles were 
drawn across the Straits—one from Key West to Habana, one from 
Cape Florida to Gun Cay (coinciding with the Blake and with Pills- 
bury’s profiles), and the third from off Jupiter Inlet to the northern 
end of the Little Bahama Bank. 
The Bache found a general rise in surface temperature, from north 
to south, along the whole length of the channel, the water being warm- 
est (24.70°) approximately 20 miles from Habana—i. e., in the posi- 
tion of the axis of the Florida current at low declination of the moon. 
The surface was cooler immediately off Key West than anywhere else 
in the Straits (station 10197, 20.78°) with a slight but progressive 
warming along the Florida coast from southwest to east and north. 
