CONSTITUENTS OF THE UNIVERSE. 



pendent of that motion. That fact is very 

 evident for other reasons. 



The motion of a projectile is considered 

 swift when moving two thousand feet in a 

 second of time and which soon ceases at that; 

 while the gun from which it was fired, and 

 which is commonly believed to be at rest, has 

 a ceaseless movement of nearly one hundred 

 and fifty thousand feet in the same time; in 

 common with the whole earth. To say then 

 that all matter is inert and requires force to 

 produce motion, because a bullet is supposed 

 to be at rest until it is given another mere 

 secondary motion of two thousand feet a 

 second, and a very brief one at that, while it 

 constantly has another motion seventy-five 

 times greater, with no symptoms of any force 

 being applied; is convincing evidence of a 

 serious mistake about both force and inertia. 



The assumption that force is the cause of all 

 motion, merely because a part or parts of a 

 whole like the earth require another motion to 

 precede any additional movement of such part 

 or parts to change their position or relation to 



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