30 THE OCEAN. [Book II. 



equator on both sides. And tMs water, by returning 

 to the equator from the north and south on the 

 eastern side of the ocean, would form a supply for the 

 greater force of westward pressure about the equator. 



Thus the waters of the ocean would be set in mo- 

 tion westwards in the equatorial regions ; northwards 

 and southwards from the equator towards the tem- 

 perate zones on the western side of the ocean ; 

 eastwards through the temperate zones ; and from the 

 temperate zones towards the equator on the eastern 

 side of the ocean. 



The action of westward pressure, under con- 

 sideration, would not, however, simply tend to form 

 these two revolving currents — one lying on each side 

 of the equator ; for, the water turned northwards and 

 southwards from the equator on the western side of 

 the ocean, comes under the influence of change of 

 latitude, which, as it is increasing its equatorial dis- 

 tance, gives it a tendency to run eastwards ; and 

 therefore, instead of sweeping from the equator all 

 alono" the western coast, and then back to the 

 equator along the eastern coast, it must, at some 

 certam distance from the equator, diverge eastwards 

 from the western coast and flow through the ocean 

 to strike upon the eastern coast. Dividing upon the 

 eastern coast, one portion in each hemisphere forms 

 the stream running from each temperate zone towards 

 the equator ; and the remainder in each hemisphere 

 is turned alonoj the eastern coast from each of the 



