PHYSICAL anp LITERARY. 309 
incorporated. with the fulphur of antimony 
into a black powder like Athiops mineralis, 
which may be fublimed into the ciznabaris 
autimonit, Quick-filver diffolved in\aqua for- 
zis, may likeways be precipitated by another 
metallic body, as zink or bifmuth. 
V. Some bodies diffolved in their proper 
menfirua, may be precipitated thence, by fe- 
veral bodies of different qualities. 
We meet with a great many inftances in 
chemiftry to confirm this remark.  [ thall 
mention a few examples, in which the great- 
eft variety obtains. Pure filver being diffol- 
ved in good aqua fortis, and the folution di- 
ftributed into fix or eight glafles, we may 
make as many precipitations by different pre- 
cipitants ; for folutions of fea-falt and crude 
falt ammoniac, fpirits of fea-falt, vitriol and 
falt ammoniac, a fixt alcaline falt, or its lee, 
and a piece of copper, will, each of them 
feparately, make a precipitation -of the fil- 
' yer. 
: QuicK-sILvER diflolved in agua fortis, 
may be precipitated by a folution of fea falt, 
_ by a folution of crude falt ammoniac, by 
freth urine, by fpirit of falt ammoniac, by 
ol. tart. p. d. and by zink, 
| REGULUS 
