Surface and Under-Current s. 57 



the west coast of Africa, Australia, and South America, are 

 diverted northwards towards the Equator ; the latter, piled up 

 by the rotating earth against the east coasts of these continents, 

 flow as under-currents in the same direction, both returning in 

 the character of warm currents towards their old home at the 

 Pole. 



The annexed diagram represents the surface and under- 

 currents which, in accordance with the above theoretical deduc- 

 tions, compose the system of circulation in our principal oceanic 

 basins {Fig. 12). 



