p4 flpf tty ffct&antcal, &c. 



Camphire would does and found a£ 

 £he bottom of the Retort a greater 

 quantity than one would exped of $ 

 Subftance as black as pitch, aid al- 

 moft as fay from the volatility as 

 from the colour of Camphire, though 

 it appeared not ? that any of the 

 Gum had fublim'd into the neck of 

 the Retort, 



From all which Inftances it feems 

 manifeftly enough to follow, that in 

 many cafes there needs nothing to 

 make aflbciated particles, whether 

 volatile or not, become fixt^ but ei- 

 ther to implicate or intangle them 

 among themfelves, or bring them ta 

 touch one another according to large 

 portions of their furfaces, or by both 

 thefe ways conjoyntly^ or by fome 

 others^ to procure the firm Cohae- 

 fion of fo many particles, that the re- 

 fuking Corpufcles be too big or hea- 

 vy to be , by the degree of fire 

 wherein they are faid to be fixt, dri« 

 yen up into the Air, 



F IN IS. 



