C 8 49 ] 
had been flux’d ; but the falts, ufed in fuch cafe, 
Ihould be veryconfiderablylefs in quantity than in the 
common method, and alfo previoufly reduced to the 
black flux. Monfieur Geofffoy fays, the incinerated 
antimony, melted with about an equal quantity of 
black foap, gives down much more regulus than is 
to be had by the methods of Kunkel, Stahl, or any 
other, even nine or ten ounces out of a pound : but 
I really never tried this method, not having at hand 
any true black foap : perhaps fome other falino-ful- 
phureous tnedium would do as well. 
Upon the whole, however, this general obferva- 
tion may be made, that where only fmall quantities 
of ingredients in this, or any other aflay, are fluxed 
at a time, there will be always lefs regulus in pro- 
portion, than if the procefs had been made with 
much larger quantities. Befldes, in truth, there is a 
great deal of difference in antimony itfelf, fome 
abounding with reguline parts much more than 
others : nay, antimony, from the very fame loaf, 
differs in this confiderably, according as it is taken 
from the balls or apex of the cone. 
The effe&s of falts in antimony will more fully 
appear, if we attend to the operation of nitre in 
preparing the common liver of antimony ; viz. if 
equal parts of antimony and nitre, finely powdered, 
and intimately mixed, are deflagrated, and melted in 
a crucible, or iron mortar, the product is a liver of 
antimony, which Ihould be feparated from the fcoria. 
In this procefs the fulphur is firft of all partly burnt 
off in the conflagration : and, 2.dly, the remainder 
is eagerly imbibed by the nitre, now alcalized by 
the intenfe heat, which, by this means, alfo dilfolves, 
y P and 
