76 ©f tlje $3ecl?atucal ©tfgine 



ced in mixtures, proceed either from 

 a very quick and copious diffufion of 

 the parts of one body through thofe 

 of another , whereby both are con- 

 fufedly tumbled and put into a calo- 

 rific motion 5 or from this that the 

 part9 of the diflblved body come to 

 be every way in great numbers vio- 

 lently fcatter'd^f from the fierce and 

 confufed (hocks or juftlings of the 

 Gorpufcles of the confli&ing bodies, 

 or mafles which may be fuppos'd to 

 have the motions of their parts dif- 

 feringly modified according to their 

 refpe&ive Natures : Or from this, 

 that by the plentiful ingrefs of the 

 Gorpufcles of the one into the al- 

 moft commenfurate parts of the o- 

 ther 5 the motion of fome etherial 

 matter that was wont before fwiftly 

 to permeate the diftinft bodies^ 

 comes to be checked and difturbed, 

 and forced to either brandifh or whirl 

 about the parts in a confus'd man- 

 ner, till it have fettled it felf a free 

 paffage through the new mixture,, 

 almoft as the Light does thorow di- 

 vers 



