(8) 



not that Mechanical Principles are the 

 necejfary and omly th ngs whereby Quali- 

 ties may bz explan'd, but tha- probably 

 they will be found fufficient for their ex- 

 plication. And fince thefe are confeffedly 

 more maiifeft and more intelligible than 

 fubjlaatial Forms and other Scholaftic En- 

 tities ( if I may fo call them) 'tis obvi- 

 ous, what the confequence will be of our 

 not being oblig'd to have recourle to 

 things whofe exiftence is very difputable, 

 and their nature very obfcure. 



There are f.veral ways that may be em- 

 ployed, fome on one occafion, and fome on 

 another , e th r more dire&ly to reduce 

 Qualifier (as well as divers other things 

 in nature ) to Mechanical Principles >• or, 

 by (hewing the infufficiency of the Peripa- 

 tetic and Cbymical Theories of Qualities, 

 to recommend the Corpufcularian Do- 

 ctrine of them. 



For further Illuftration of this Point, I 

 fhall adde on this occafion, that there are 

 three diflinft forts of Experiments (be- 

 fides other proofs ) that may be reafon- 

 ably employed, ( though they be not e- 

 qually efficacious ) when we treat of the 

 Origine of Qualities, For fome Inftances 

 may bs brought to (hew » that the pro- 

 posed Quality maybe Mechanically intro- 

 duced into a portion of matter > where it 



was 



