CONSTITUENTS OF THE UNIVERSE. 



or device that will solve such a problem as 

 perpetual motion. 



One of the principal reasons why nothing is 

 possible in this line, is that no machine or de- 

 vice can make a motion itself. It can only 

 manifest motion when a pre'ceding movement 

 has been applied, and will not move after that 

 motion ceases except through acquired mo- 

 mentum. 



The grand difficulty with every motion of 

 this kind is that it is MERELY A SECONDARY 



MOTION, WHICH IS NEVER PERPETUAL. While 



the primary motions are perpetual, the second- 

 ary are not. as has been heretofore pointed out. 

 No application can be made of the primary to 

 a machine, and yet every machine itself par- 

 takes of the primary movements of the earth 

 of which it is a part; and by virtue of one 

 motion alone, the one around the sun, is con- 

 stantly moving nearly nineteen miles in a sec- 

 ond; but this, although perpetual while the 

 machine lasts, is not the one of which the per- 

 petual motion philosophers are in pursuit. 



64 



