e E. & U. S. Black saphurce Ot mercury. e 
- (Hydrar, syrus cum sulphure. P. L. 1787-)— 
x eke thiops mineral. 
Cabinet specimen, Jeff. Coll. No. 358. 
A black, impalpable, insinith inodorous powder, consisting 
_ of one proportion of mercury and one of sulphur; it is 
therefore a true sulphuret, but is changed into a bi-sulk — 
oS we being heated with access of air. Soluble en-— 
bm y in a solution of purée potass, from which the acids 
ba e it unchan Phe i insoluble in nitric acid. Sophis- 
eae with broey-bitek, which may be known by ; 
residue, after throwing the suspected preparation on red- 
_ hot iron; is sometimes mixed with equal parts of crude 
antimony. Is often imperfect, the globules of mer a 
. pre visible under a lens—equally imperfect, when It?) 
whitens gold, on which it is rubbed. Is supposed to be — 
ye in doses of gra, v. to 38s; nearly obsolete. - 
No. 315 Svovanupon’ ‘cum MAGNEsI4. Dub. 
Mercury with magnesia, 
Cabinet specimen, Jeff. Coll. No, 359. 
An absurd preparation—good for nothing. 
. 316,—Aceras Hyprarcyrti. Edin. Dub. A 
tate of mercury. 
inet specimen, Jeff. Coll. No. 360. 
y prepared, is in small flat crystals of argentine — 
; acrid, soluble in hot water—hardly in ‘cold. — 
Insoluble i in alcohol; alkalies and heat decompose it; light : 
_ blackens it. Antisyphilitic, alterative ; dose gr. i. 
and morning; is the active ingredient, in Keyser’s 
ts. ii, in FZ ij of rose-water ; used in cutaneous affections. 
‘a 
.—Hyprarcyrt oxy-munras. L, & U.S. 
“Hydrargyri corrosivus. E. D. Oxy- — 
muriate of mercury. Corrosive muriat 
mercury—called, corrosive sublimate. 
Cabinet specimen, Jeff. Coll. No. 361. : 
‘stalline mass, of small. prismatic e 
li at ie cy 
