142 THE OCEAN. [Book V 



CHAPTER XII. 



EVIDENCES OF THE CURRENT-CREATING ACTION OF 

 VIS-INERTIA RESULTING FROM THE ONWARD MOTION 

 OF THE EARTH THROUGH SPACE. 



PART I. 



GENERAL EVIDENCES OP ONWARD MOTION. 



In the theoretical consideration of vis-inertia3, I 

 have in Chapter III. described the variations in the 

 direction of the action of the orbital force of vis- 

 inertise, showmg a daily variation through fourteen 

 points of the compass, and an annual variation through 

 four points, the daily variation being from an action 

 westwards in the night-time to an action eastwards 

 in the daytime, and the annual variation being from 

 an action northwards in March to an action south- 

 wards in September. 



Now, on examining the actual movements of 

 the ocean, although there appear such effects as 

 may be expected, in accordance with the theoretical 

 action of vis-inerti^e, to result from an onward motion 

 of the earth, these effects do not accord with that 

 indicated theoretically as the action of vis-inertia) 



