234 



THREE CRUISES OF THE " BLAKE 



Avarmer water which joins the Florida Gulf Stream is driven 

 into it through the Old Bahama Channel, the temjjerature of 

 which seems to be very warm, being higher than we find it at 

 equal depths to the eastward nearer the Windward Passage. 

 The variable cold bauds which have been traced in the course 

 of the Gulf Stream may also be due not wholly to cold water 



Oistanoex froin, Ca/ie Canxlveral in JFiztUicaZ Miies 



Fig. 162. 



from an arctic current, but in part to the cold water of lower 

 and colder layers of the Florida Stream itself. 



A comparison of the temperatures of the different sections 

 across the passages of the Windward Islands, the Straits of 

 Florida, and the Straits of Bemini is interesting as showing that 

 from the close agreement of the temperatures themselves across 

 these lines there is nothing to indicate that a powerful current 

 flows to the northward through the Straits of Bemini, or that 

 similar currents, though of less velocity, pass through the Straits 



