(seq. 525)

518

Materia Medica

Emetics

Unted States, in large doses it vomits and purges, and in small
doses of 1 gr. [grain] nauseates it has been used in dropsy and anguinouse
affections.

James's Powder. The composition of this
is not exactly known but the supposed Rx is as follows Rx Antimony
any quantity calcine it with a considerable protracted heat in a flat
unglazed earthen vessel, adding from time to time a sufficient quantity
of animal oil and salt well deflagrated then boil it in melted nitre
a considerable time then sepperate the powder from the water by dissolving
the latter in water. The common way of preparing this powder was follows
Rx Sulphate of Antimony rubbed to a coarse powder and hartshorn each
equal parts mix and throw them into a wide Iron pot heated red hot
and stir them constantly untill they are burnt into a matter of an ash
colour, then remove from the fire and rub it to powder and put it in
a coated crucabbe [crucible] luto to this cruicable [crucible] another inverted in the bottom
of which a small hole is drilled apply the fire which is to be gradually raised
to a white heat and kept at this temperature for two hours, lastly rub
the matter when cold into a fine powder. Buy analysis Mr P_ found
this powder to be composed of 43 parts of Phosphate of lime and 75 of
an oxyde of Antimony, this is a verry important article, but its
operation is verry irregular, sometimes small doses will operate verry