10(5 ESSAYS AND OBSERVATIONS 



the velocities are as 2 to r , the heights 

 are as 4 to i. But the forces are ftill 

 to be eftrmated, as 2 to i ; fince the 

 times which the uniform adlion of gravi- 

 ty takes to deftroy them are in that pre 

 portion. With a double velocity, and 

 in a double time, the body arrives at a 

 fourfold height. 



What hath been here remarked, con- 

 cerning the meafure of forces, is not fo 

 much intended for the inftru6lion of 

 thofe who have had leifure to attend, to 

 this celebrated controverfy, as to enable 

 every one who has the fmalleft acquaint- 

 ance with thefe matters to judge for 

 themfelves ; whether the common argu- 

 ments, when rightly underftood, be fuffi- 

 cient for the decifion of the queftion ; cry 

 whether there be ftill occalion for a new 

 folution cf the difficulties. The debate 

 has been clofed long ago; after being 

 m^anaged by the ableft advocates on both 

 fides : And the fubjecfl is generally thought 

 to be exhaufted, though no formal recon- 

 ciliation hath hitherto been declared a- 

 SQongft the parties. We are now told, 



" That, 



