SALTS. 72. Vitrioliim. 
22J 
72. VITRIOLUM, Of a very cauftic tafte: its 
watery folution made turbid both by foda and 
pruffiate of lime: very foft, mouldering in the 
air ; diflblving like water when expofed to- heat, 
and in a very ftrong degree leaving a genuine 
metallic oxyde. 
Of a rofy-red eolour, its watery fofiition' depofiiing an 
ochraceous fediment when dilfolved foda is poured 
into it, and a greenitli one when a folution of pruffiate 
of lime is poured into it. 
Sulphate of Cobalt. SchmeiJJerminer. i. 274. 
Sulphat of Cobalt. Thomfon chem. p. loi . 
Found in mines oi Neujohl \n Hungary : it is folubie in 10 
times its weight of cold water, and melts with borax into a 
blue glafs : when cryll.illi2ed it exhibits an elongated 8-fided 
prifm. 
^iccolk Green, it^ watery filution depoliting a whitifli-greeft fedi- 
ment from a mixture of loda. 
Vitriol, ferr ec niccol, i^ronjt. fnin. 123* 2. 4* 
Sulphate of nickel. Schm(:i£er mtnrral. I. p. 275. 
Sulphat of nickd 7 homf. chem. p-bi. 
Found in fome mines of SawsWi, and ufually contains tome 
iron : colour a deep green ; it cryltallizes in double 4"“ded 
pyramids with their tips truncated, and fometinies in large 4“' 
fided equal prifms. 
White, its watery folution dcpofiting a white fediment 
from a mixture of foda or pruffiate of lime, and when 
evaporated cry ftalli/.ing into 4- fided prifms terminated 
at both ends by a pyramid. 
Vitriolum album. •Sy/?. uat, xii« 3* ?• t04" *-3' 
Vitriolum zinci. V/all fyit. z. p. 24. «. 3. 
White Vitriol. Berkenb. mtl p. 253. 
Vitriol of zinc. Kiruuan mineral. 2. p. 23. 
Native vitriol of zink. Scbmcifter mineral, i.^. 274. 
Sulphat of zinc. Thomfon chem. i.p.bS. ^ 
Found in the copper mines Cornwall ind Anilfjea^ and m tne 
zinc.mincs of Zm^eden, Eohemiay Germany, and Hungary, 
' r.ire'y in its perfeft native Hate, but generally in a ftalaai- 
tical or c-willary H ue, or in a loofc powdery cfflorefcencc: 
it is fometimes blended with a little iron, and then tinaure 
of galls turns its folution blackifh : the cryftals are foiiible in 
fonicthing more than twice their weight in water, and efflo- 
