The Mighty Deep 



in the North and South Pacific, and doubtless 

 in the Indian Ocean. 



To find its direction in any part, one need 

 only lay a watch, face upwards, upon a map of 

 the North Atlantic or the North Pacific. In 

 both cases the water travels round with the 

 watch-hands. In the South Atlantic and the 

 South Pacific the flow is just in the opposite 

 direction. 



So both the Gulf Stream and the Black 

 Stream are merely parts of a big oceanic whirl- 

 pool. Each ocean on Earth has its own system 

 of circulation ; and that system is part of a 

 world-wide system. The waters are in perpetual 

 and complicated motion. Streams pour incess- 

 antly hither and thither, to north and south, to 

 east and west. 



Two vast streams, known as the Equatorial 

 Currents, nominally pour round the world, but 

 really are best seen in the open Pacific, where 

 for loner distances no land meddles with their 

 career. They flow steadily westward, one 

 to the north and one to the south of the 

 equator. 



Between them flows a reverse stream, called 

 the " Equatorial Counter Current." If a certain 

 amount of water travels north, an equal quantity 



58 



