44 lmpnMimtitfyt€tymW# 



as attempts to teach the Manner how 

 the Qualities thcmfelves and their 

 Effe&s or Operations are produced. 

 Of this you may ellewhere find an 

 , Inftance given in the Quality that is 

 wont to be firft in the lift, viz that of 

 Beat) which though it may intelligi- 

 bly and probably be explicated by the 

 Corpufcular Hypothefis, yet in the 

 Peripatetic account that is given of it> 

 is both too queftionable and too fu- 

 perficial to give much Content to a 

 Rational Inquirer. And indeed te fay, 

 that a Subfiantial Form (as that-of the 

 Fire) afts by a Quality (call'd Heat) 

 whofe Nature 'tis to produce fuch an 

 effeft (as to foften Wax or harden 

 Clay) feems to be no other infub- 

 fiance, than to fay, that it produces 

 fuch an effedt by fome power it has 

 to produce it. But what that power 

 is,and how it operates, is that, which^ 

 though we'tnoft defire to know, we 

 are left to feek. But to profecute the 

 Imperfe&ions of the Peripatetic^ Hy- 

 potheJtS) were to intrench upon ano- 

 ther difcourfe^ where they are more 



fully 



