+ Sa 
On ihe Gulf Stream and the Keys of Florida. 53 
there would even be carried much farther on. We have a. 
moment that the banks of sand and mud, found in the bed and 
on the margin of the Gulf Stream off the eastern coast of Florida, 
were deposited t that stream. 
But Frill be clveced that the water of the Gulf Stream is 
remarkable for its transparency. This objection, however, will 
entirely disappear when we consider the difference between river 
and ocean currents. The former are of slight depth, and run 
Over rough bottoms, and between banks possessing many ine- 
*Lyolls Prin, p. 328. Lyell Prin, p. 791. Lyells Prin, p. 898. 
