PHYSICAL AND LITERARY. 345 



Hiflblved In highly redified Ipirit bf 

 wine or alcohol, if water, which is fpe- 

 cificalJy heavier than the fplrit, is pout- 

 ed in, the refinous particles can no longer • 

 ■jbe fuftained. The fiablimate cdrrofive 

 mercury can be difluJved in lime water 

 or common w^ter : Upon pouring in oil 

 bf vitriol, a very ponderous acid liquor, 

 the mercury fubfides. Coral (lidolved in 

 fpirit bf vinegar will be throve; n dowii 

 by the fame oil of vitriol. Thefe in- 

 llances naturally lead us to another re- 

 mark. 



III. Some bodies dlfTolved in one acid 

 liquor may be precipitated by another acid. 

 •To the two former examples of this 

 manner of precipitation, I fhall add feme 

 others. Silver, difTolved in aqua fort'is, 

 will be thrown down, \i fp'tr, fal. marini 

 is put into the folution : On the other 

 hand, a folution of gold in aqua regid 

 fuffers a precipitation by the affufion of" 

 Jpir. nitri. That corrofive acid liqaor, 

 called butyrum antimonii, is known to be 

 a Ibhition of the metallic part of anti- 

 mony in aqua regia : If we pour into h 

 Vol. I. Xx y///v 



