MECHANISM OF NATUKE 



but perhaps it will require great study to under- 

 stand the effects of numerous movements in vari- 

 ous directions at the same time. 



That there is something outside of a moving 

 body, which takes part in the phenomena that are 

 the result of inertia, is plainly indicated by a spin- 

 ning top, by the gyroscope and pendulum. 



Let a heavy ball be suspended from a great 

 height by a fine wire. (Faeault's experiment.) 

 Then after the ball has been carefully started to 

 swing in a perpendicular plane, it will keep on 

 swinging for some time in that same plane, even 

 when the turning of the earth has made that plane 

 otherwise than perpendicular. But at the end of 

 every upward swing the inertia (or momentum) 

 of the ball is fully exhausted, and gravity only 

 brings the ball back down. And the tendency of 

 gravity is to push down to the centre of the earth, 

 or in a perpendicular path. Then clearly the ball 

 moves in the first established plane because that 

 plane has something to do with the movement of 

 the ball, for certainly the ball that is no longer 

 moving by inertia cannot then do this or that be- 

 cause of any supposed inherent inertia. 



Then whatever the movement of void matter, 

 caused by bodies moving in spheres really is, that 

 movement is the real cause of the momentum ac- 

 quired by moving bodies. And this brings inertia 

 into relation with time and distance ; and, because 

 of the Law of Life, that all substance must change 

 component parts, even a two-fold motion by inertia, 

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