[ M ] 
lent and repeated deflagrations, which rife in the 
iorm of flame, fame, and flowers, if catched in 
proper -places j and thefe lafl may be eafily reduced 
to regulus again. Befides, the proportion of the 
falts is too great, for, being alcalized, and uniting 
with the fulphur, they take up too much of the re- 
guline part, fo as to leave very little at bottom, if a 
flrong fire is long continued. Much more regulus, 
in proportion, would have been yielded, if the tartar 
and nitre had been previoufly fired, and turned into 
what is called the black flux. But, even in this 
cafe, the melted mafs fhould be poured off, or taken 
from the fire, as foon almofl as it flows very thin ; 
elle no fmall part will evaporate by the flrength and 
duration of the fire, which alfo increafe the pro- 
portion of the fcoria. But a much greater quantity 
of regulus is produced by melting two parts of clean 
antimony with one part of iron-filings, or bits of 
nails, to which alfo one part almofl of pure dry fait- 
petre fhould be projeded. This procefs gives almofl 
half regulus. Here the nitre in part likewife burns 
off the fulphur, but ’tis the iron, that chiefly takes 
Lip the fulphur, and unites with it into fcoria ; which, 
by-the-bye, finely powdered, and duly wafhed, 
may be ufed with as good or a better effed, than 
the antimonium martiale cachedicum of Ludovicus. 
I have repeatly known it very ferviceable in a leuco- 
phlegmatia, and an obflinate fluor albus. 
If crude antimony is firfl calcined by fire, as for 
making the glafs, or boiled repeatedly in frefli 
flrong lime-water, much of the fulphur is carried 
off, and the flibium, thus managed, yields much 
more regulus in proportion than if crude antimony 
had 
