WITH THE MARINE ACID. 



time-water, fpirit offal ammoniac, or even a folu- 

 tionof lixiviated fait found upon it. This pheno- 

 menon is commonly thought to depend on the 

 perfect dulcification of the mercury. But the 

 alteration is the fame, when white precipitate is 

 ufed. 



Some aflcrt that three parts of oil of olives, and 

 one of fweet mercury, if boiled together, diflblvc 

 and form a fort of balfam. 



5 xxvii. Protcfs for preparing Corro/fvc Mercury 

 from fweet Mercury. 



FEW have tried to prepare corrofivc from fweet 

 -mercury. Schcffer of the Swcdifh Academy 

 made fome experiments with this view: and his 

 papers, in which, among other things, 1 found a 

 detail of thofe experiments, were, after the au- 

 thor's death, put into my hands by the illuflrious 

 Patrick Alllromcr. Ahtromcr was induced, by 

 SchclVer's example, to attempt the folution of fwcct 

 mercury in the marine acid; but the experiment 

 was unfucccfsful. Sweet mercury macerated 

 with that acid, and reduced to a powder, was in- 

 deed altered, and aflumcd a dirty colour on the 

 furfacc, but retained its mild charader unchang- 

 ed. Nay, though fublimated three times fuc- 

 ceflively, witlv the addition of equal quantities of 

 romninn fair, and vitriol calcined to whitcncfs, ic 

 A a ftill 



