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XLI. Obfervations on the Effects of the Vitrum 
Antimonii ceratum, by Geoffroy, of 
the Royal Academy of Sciences, a?td 
F. R. S. Tran flat ed from the French by 
Tho. Stack, M D. F. R . S. 
Read oa. 31J * ^HIS medicine, the preparation of 
I which was firft publiflied in the 
Edinburgh Medical EJfays , is made by mixing an 
ounce of the glafs of antimony in powder with a 
drachm of yellow wax. This mixture is kept in an 
iron ladle over a flow clear charcoal-fire about half an 
hour, taking care to ftir it continually with an iron 
fpatula, until the wax is confumed, and ceales to 
emit fumes. Such is the procefs of the preparation, 
publiflied in the Edinburgh Effays. 
In the memoirs of the Royal Academy of Sciences 
for the year 1745-, I gave the detail of this opera- 
tion, with fome remarks on the changes, which wax 
may occafion in the glafs of antimony. 
Of all the preparations of glafs of antimony this is 
doubtlefs the moft perfedt ; for it is infinitely fupe- 
rior to the chylijla of Hartman. This chylifla is 
nothing more than a glafs of antimony well pounded, 
and opened by acids, and then digeffed in fpirit of 
wine impregnated with maftic; which never can co- 
ver the particles of this glafs with coats of equal im- 
penetrability with thofe form’d by wax bituminized 
by burning. 
This medicine fucceeds equally in bloody-fluxes, 
diarhoea’s, fimple loofeneffiTs, quartan agues, even 
M m the 
