r 846 ] 
of great part of this external fulphur, it acquires 
more and more of a vomiting quality, as the ful- 
phur is more and more con fumed. And when this 
incinerated antimony, as 5 tis called, undergoes a fur- 
ther degree of fire, and is fluxed into a regulus, and 
even yet farther into a kind of glafs, it is fo far 
rtripped of its fulphureous covering, that the regu- 
line fpicula lie as it were naked, and exert the ut- 
moft violence on the ftomach, &c. And even be- 
fore it is turned into a proper regulus, or glafs, it 
acquires, after a long and proper roafting, no fmall 
degree of an emetic power, as any one will find, who 
gives it in fubflance, or properly digefled in wine, or 
cyder. And though I cannot fay with Boerhaave, 
that it is violently emetic, yet I know Hoffman is 
miftaken, when he pronounces it quite inactive. This 
incinerated antimony then, being thus far deprived 
of its external fulphur by calcination, is farther di- 
verted of it by being kept fufed a confiderable time 
in a very rtrong fire, and converted into glafs ; which 
almort intirely confifts of reguline parts, as is mani- 
feft from its being of a much greater fpecific gra- 
vity than crude antimony, or even than its hepar ; 
and though the regulus lies concealed under a glarty 
form, yet it is ftill very eafily reduced into a proper 
regulus, and therefore, as fuch, communicates a mort 
ftrongly emetic quality to any menftruum, which the 
regulus itfelf would impart it to, as well as being in 
fubflance mort violently vomitive. Nay, in running 
calcined antimony into glafs, if the fire is not brifk, 
and well managed, part of the very fame molten 
mafs runs into regulus, and part into glafs, fo little 
is the difference between them. • * 
Indeed, 
