1 6 Eeflccttonisupont|ie|)ppot?je% 



upon their being put togethcf, that 

 may be no fuch certain figa as they 

 prefume,they having indeed a depen- 

 dance upon particular Contextures 

 and other Mechanical affe&ions, that 

 Chymifts are not wont to take any 

 notice of. Foralmoft any thingthat 

 is fitted varioufly and vehemently to 

 agitate the minute parts of a body, 

 will produce Heat in itj and fb, 

 though water be neither an Acid nor 

 an Alcalizate liquor, yet it would 

 quickly grow very hot^ not only 

 with the highly acid Oil of Vitriol* 

 but (as I have more than once pur- 

 pofely tried and found) with the fie- 

 ry Alcalizat Salt of Tartar. And 'tis 

 to be noted, that neither in the one 

 nor the other of thefe Incalefceut 

 mixtures, there is produced any fuch 

 vifible or audible conflict, a^, accord- 

 ing to the Dcdrine of the Chymifts 

 I reafcn with^one would expeft. And 

 as for the produ&ion of bubbles, 

 efpecially if accompanied with a 

 hiding noife, neither is that fuch a 

 certain figa as Chymifts imagine; For 



the 



