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E x P E r. xnr. 



V | Ms known that many learned 

 X men 5 befides feveral Chymi- 

 cal Writers 5 afcribethe Incalefcences, 

 that are met with in the diffolution 

 of Metals^ to a conflict arifing from 

 a certain Antipathy or Hoftility, 

 which they fuppofe between the con- 

 flicting bodies , and particularly be- 

 tween the Acid Salt of the one, and 

 the Alcalizate Salt, whether fixt or 

 volatile, of the other. But finee this 

 Do&rine fuppofes £ hatred between 

 Inanimate bodies 3 in which 'tis hard 

 toconceive 5 how there can be any 

 true paffions, and does not intelligi- 

 bly declare^by what means their fup- 

 pos'd Hoftility produces Heat} 'tis 

 not likely 9 that, for thefe and fome 

 other Reafons, Inquifitive Natura- 

 lifts will eafily acquiefce in it. And 

 on the other fide it may be confi- 

 der'd^ whether it be not more pro- 

 bable, that Heats, fuddenly produ- 

 F ccd^ 



