or J&otjuctiott of ft j*nef& 2 1 



into the parts of the propofed body. 

 But this means tending rather to hin- 

 der the a&ual avolation of a portion 

 of matter, on, at moft, procure a tem- 

 porary abatement of its volatility, 

 than to give it a (table fixity, I (hall 

 not any longer infift on it. 



The fourth way of producing 

 Fixity in a body, is by putting to it 

 fuch an appropriated Additament> 

 whether fixt or volatile^ that the 

 Corpufcles of the body may be put 

 among themfelves, or with thofe of 

 the additament, into a complicated 

 ftate, or intangled contexture. This 

 being theufual and principal way of 

 producing Fixity, we (hall dwell 

 fbmewhat the longer upon it, and 

 give Inftauces of feveral degrees of 

 Fixation. For, though they do not 

 produce that quality in the ftri&eft 

 acceptation of the word, Fixity* 

 yet 'tis ufefull in our prefent inquiry, 

 to take notice, by what means that 

 Volatility comes to be gradually aba- 

 ted, fince that may ' facilitate cur 

 underftanding, how the Volatility 

 B 3 of 



