i8 



THE OCEAN 



ship enters this wonderfully blue water the 

 air becomes a great deal warmer. 



This change in the colour of the sea and in 

 the temperature of the air proves that you are 

 in the Gulf Stream, one of the largest and most 

 wonderful of all the great ocean rivers. The 



pyy 





•rc"- 



THE GREAT OCEAN CURRENTS 



Gulf Stream is so called because it starts or 

 "rises," so to speak, in the Gulf of Mexico, 

 and although we cannot see it move yet it flows 

 steadily northward so rapidly and with such 

 a strong current that you would find it very 

 diflScult to row a boat against it. Even the 

 speed of great steamships is so affected by this 

 stream that when travelling south the captains 



