or i&oimttfon of IFfrtnete* 2 5 



qr lucky coaptation of the figures of 

 the particles of both the bodies* 

 thefe particles may take fuch hold of 

 one another, as to compofe corpu- 

 fcles^ that will neither by reafon of 

 their ftri£t union be divided by Heat 5 

 nor by reafon qf their refulting grofs- 

 pefs tie elevated even by a ftrong 

 fire 5 or at leaft by fuch a degree of 

 Heat as would have ftjfficed to raife 

 more indifpofed bodies than either of 

 the feparate Ingredients of the mix- 

 ture This observation^ if duly made 

 ou^ does fo much favour our Do- 

 ctrine about the Mechanical Origine 

 of Fixation., and may be of fuch ufe, 

 not onely to Chjimifif^n fome of their 

 operatipnsj but to Philofophers^ in afc 

 figning the caufes of divers Vhtinomt* 

 ya of Nature, tha$ it may be worth 

 while to exemplifie it by fome In- 

 stances. 



The fir ft whereof I (hall take from 

 an ufual practice of the Chymifts 

 themfelves : which I the rather doe 5 

 to let you fee, that fuch known Ex- 

 periments are too often over-looked 



for 



