loft> fince , whether or no they con tri* 

 bute much to the eftablifliment of the Me* 

 chanical Do&rine about Qualities, thuy 

 will at leaft contribute to the Natural Hi- 

 itory of them. 



III. I (hall not trouble the Reader with 

 a Recital of thofe unlucky Accidents, 

 that have htnder'd the Subjects of the 

 following Book from being more nume- 

 uus, and I hope he will the moreeafily 

 excufe their paucity, if he be advertifed, 

 that although the particular Qualities, a-* 

 bout which Tome Experiments and Notes, 

 by way of Specimens, are here prefented, 

 be not near half fo many as were intend, 

 ed to be treated of* yet I was careful to 

 chufc them fuch as might comprehend in 

 a (mall number a great variety •, there be- 

 ing fcarce one fort of Qualities, of which 

 there is not an Inftance given in this fmall 

 Book , fince therein Experiments and 

 thoughts are delivet'd about Heat and 

 Cold , which are the chief of the four 

 FIRS? gVALItlE-Sh about Tafts 

 and Odours, which are of thofe, that, be- 

 ing the immediate obje&s of Senfe , are 

 wont to be catl'd S ENSIBLE QVA~ 

 Lit IE Si shut Volatility and Fixity* 

 Corrofivenefs and Corrofibility, which,as 

 they are found in bodies purely natural, 

 are referable to thofe Qualities^hac ipany. 

 1 \ *%h : 



