202 A. D. Bache on Gulf Stream Explorations. 
have been pursued, one by following the stream from the Gulf 
‘of Mexico, and making hourly observations of the temperature 
a 
4 
; 
‘ 
A 
By taking the mean temperature of any one section, and gomg 
back to the date of the departure of the waters from the Gulf of 
Mexico, as determined by the velocity of the stream, and a 
paring the temperatures observed with the temperat He t 
authentic meteorological records of the Gulf for a series pet ba 
distance from the Gulf of Mexico, and the temperature 4 
Gulf at the time the water entered the straits of Flon he parts 
further, that the latter cause is the predominating one m ot cur’ 
of the Gulf Stream adjacent to the Atlantic coast where 
rent is rapid. ; ‘no the cold 
The influence of the form of the bottom in forcing to, and 
counter current of the bottom upward, has been adver g where 
the fact appears to be well established in the cross section po 
the ridges and valleys parallel to the direction of the peepee 
arate it into bands of warmer and cooler water, and bgt the 
sion, as has just been stated, is strengthened by the fact 
