[ 8 5 * ] 
as that with the fixed alkali ; but the latter Is not ib 
glaffy, and much more apt to relent by the moifture 
of the air. The crocus, however, from either, if 
perfectly edulcorated, is nearly of the fame ftrength. 
That indeed, prepared with half the quantity of ni- 
tre, is confiderably weaker, as much lefs of the in- 
veloping fulphur is confumed, efpecially where a 
flrong fire is not ufed, and the matter is taken off be- 
fore the fcoria have well time to feparate. Even the 
fcoria of the common regulus of antimony are of 
the very fame nature, and a kind of an hepar anti- 
monii, which by a proper flux may be eafily reduced 
in part to a regulus: fo that whether alkalized falt- 
petre, pot-afh, or fait of tartar, are melted with this 
fulphureous mineral, a liver of antimony is produced, 
from which, duly wafhed, a crocus metallorum, or, 
more properly, antimonii. And as thefe hepatic 
maffes are foluble in boiling water, the folutions let 
fall an antimonial fulphur, efpecially when precipi- 
tated with a vegetable or mineral acid : but this ful- 
phur is always more or lefs impregnated with regu- 
line particles, particularly that of the firft precipi- 
tation, whence it is always confiderably emetic. 
Nay, 7 tis certain the reguline and fulphureous parts 
of antimony may be fo incorporated with fix’d al- 
cali-falts, that the whole, almofi, of any quantity of 
antimony, melted with about an equal part of fait of 
tartar, or pot-afhes, may be thus turned into a kind 
of fulphur auratum, as ’tis called ; which is itfelf, 
in truth, no other than a very fulphureous- crocus an- 
timonii. The cohefion however of the fait, ful- 
phur, and regulus, in this hepatic concrete, is eafily 
dififolved by pouring an acid to its folution in water, 
f P 2 which 
