224 
SALTS. 72. Vitriolum, 
tefce flowly on expofure to the air : fpecific gravity whei' 
cr>ftalli2ed 1,912. when in the ftate in which it is found i’’ 
the (liops 1,3275. contains acid 40. oxyde 26. water 4^’* 
B fi:man : according to Kirn.vaii, acid 20,5. cxyde 40,0' 
water 39,5. 
Cupri, Of a deep blue colour and Very aftringent acrid taftcj i*® 
watery folution when eopioufly mixed with a folutioM 
of volatile alkali becoming a-fine iky-blue. 
Vitriolum cupri. Syst. not. .xii. 3. p, 104. ». 2. 
Vitriolum cupri. Wall.J'yji.z. p.zo. n. i. 
Vitriolum veneris. /Iman acad. \. t. 12. f. 4. 
Blue vitriol. Berkenh. ouil. p. 253. 
Vitriol of copper. Kimxian mineral. 2. p. 22. 
Copper vitriol, Blue vitriol, Schmeifier miner, l, p. zyt. 
Sulpha: of copper. Thomfon cheni, 2. p. 579. 
2. Light blue, containing iron and copper united with fulphuric 
acid. 
Vitriolum mixtum. Wall.fyft. 2. p. 26. n. 4. a, 
Vitriolum mixtum. Syft. nat. xii. 3. p. 105. ». 4. 
Vitriol, cupr, et f.rr, Cronft. min, 123. 2. I. 
3. Deep blue, contafning zinc and copper united with fulphuric 
acid. 
fiyjl. nat, xii. p. 105. «. 7. 
Wall. fist, miner. 2. p. 26. 4,d. 
Vitriul. cupreo-zinceum. Cronft. 123. 2. 4. 
4. Light blue, containing iron, zinc and copper united with fuV 
phurie acid. 
sift. nat. xii, 3. *. 105. n. S, 
IVall.fy/l. miner, 2. p. z6. n. 4. b. 
Cronft. mineral. I 23. z. z. 
Mi.xed vitriol. Kir an mineral. z.p.z\. 
Found in the copper mines ol Wickhn.v in Ireland, in France* 
Germany, Sa.vony, Hungary, Snsueden, Sec. fometimes in * 
ftate ot folution, fometimes cryilallized or ftalaflitical : it has * 
llrong llyptic naufeous tafte, and is commonly ufed as a 
cauilic; itscryftals are 4-r:ded prifms with rhomboidal faces 
which are foluble in four times their weight of cold water, 
and by expofure to the air they fiightly eSiorefee, lofe their 
iullre, and are covered with a yellowifh-grey powder; they 
likewife communicate a green colour to- flame. A valuabls 
article of commerce is produced by placing thin plates of iroD 
in the waters where it is held in folution; for the acid having 
a greater afiinity with iron than copper, gradually decorapofe* 
it, and leaves the copper in its place. Specific gravity 
2,1943. contains acid 33. oxyde of copper 32, water 3)* 
Prohft, 
