EXPLORATIONS, WESTERN ATLANTIC, STEAMER BACHE, 1914. 41 
tions showing that seasonal warming had progressed down to about 
100 meters at that season. 
The fact that cold water was banked up against Florida in both 
years is evidence that the general distribution of temperature encoun- 
tered by the Bache is the normal condition for the Straits; but there 
Temperature, Centigrade 
Meter 0 2 6 7 8 9 10°11 12 13 14 18°16 17 18 19 20°21 22 23 24 25°26 27 28 
“ARs 
nee 
Fic. 43.—Temperature sections in the middle of the Straits between Gun Cay and a's Florida, Bache 
(station:10203), .{-..2.-; and by the Blake, May 30, 1878, 
are evidently considerable variations from year to year in the abso- 
lute temperature in the middepths, which probably depend on varia- 
tions in the deep-water currents of the Straits. 
It is, of course, common knowledge that a very strong surface cur- 
- rent flows out of the Gulf of Mexico via the Straits of Florida,? but 
Temperature, Centigrade 
9 10°11 12 13 14 15°16 17 18 19 20°91 29 93 24 25° 
(aa 
M ae a : 
g- SERUR ESS SEReoe 
ee IR 
Tiree 
aPGee 
Soee ce 
Fic. 44.—Temperature sections 40 miles northeast of Habana, March, 1914, Bache (station 10201), == = 
and about 95 miles northwest of Habana, May 17, 1876 (Blake). ......--. 
information as to the movements of the water in the deeper parts of 
the Straits is scanty. Mitchell (1869), it is true, believed that he 
found both velocity and direction constant down to 600 fathoms 
off the Cuban coast, and his conclusion was accepted by Alexander 
a For an excellent summary cf the history of the Gulf Stream, see Kriimmel (1911), p. 574. 
