(12) 



dy, except what is Mechanical, and what 

 might be produced in it , fuppofing fuch a 

 parcel of matter were artificially framed 

 and conflicted as the body is, though 

 without any Subjlantial Form, or other 

 fuch like internal Principle. So when a 

 piece of Giafs, or of clanfy'd Rofin , i$ y 

 by being beaten to powder , deprived of 

 its Tranfparency > and made white, there 

 appears no change to be made in the pul- 

 verized body, but a comminution of it in- 

 to a multitude of Corpufcles , that by 

 their number and the various fcituatipns 

 of their furfacesare fitted copioufly to re- 

 fL<9: the fincere Light feveral ways, or 

 give fome peculiar Modification to its 

 R ytsjand hinder that free paflage of 

 the beams of Light, that is requilite to 

 Tranfparency. 



Fourthly y as in the cafes belonging to 

 the foregoing number there appears not 

 to 'intervene in the Patient or Subject of 

 the change, any thing but a Mechanical 

 alteration of the Mechanical Structure or 

 Conftitution > fo in Tome other cafes it ap- 

 pears not, that the Agent, whether natu- 

 ral or factious, operates on the Patient 

 otherwife than Mechanically, employing 

 onely fuch a way of acting as may pro- 

 ceed from the Mechanifme of the matter, 

 which it felf confiitsof, and that of the 



body 



