of $eat ant €cl&* 101 



body of Gold, whether calcin'd 

 pr crude, and become manifeftly 

 incalefcent with it in lefs than two 

 or three minutes of an hour. 



EX PER. XXVIII. 



Since we know that fome natural 

 Saks, and efpecially Sale-peter, 

 can produce a Coldnefs in the water 

 they are diflblved in , I thought it 

 might not be impertient to our en- 

 quiry into Heat and Cold, and might 

 perhaps alfo contribute fomewhat to 

 the difcovery of the Stru&ure of 

 Metals, and the falts that corrode 

 them, if Solutions were madr of 

 fome Saliform'd bodies, as Chymifts 

 call them, that are made up of me- 

 talline and faline parts^ and do lo 

 abound with the latter 5 that the 

 whole Concretions are on their 

 account diflbluble in common wa- 

 ter. 



Other 



