36 ESSAYS AND OBSERVATIONS 



own. The refiftance of bodies again is 

 of admirable ufe to keep force within 

 proper bounds. If the fmallefl body, 

 impinging upon the greateft, had the ef- 

 fedl of communicating its own velocity, 

 which it would do, were there no refiftance, 

 the fmallefl: force would be fufiicient to 

 give a new violent motion to the earth, 

 and to put the lives of all mankind in the 

 power of every individual. 



OU 



