Note 543 — PHARMACOLOGIA. (continued 5)

A formula for its preparation is introduced into the new Codex of Paris, being the one used by M. Pelletier; it is as follows. Let ℥i of the powder of Ipecacuan be macerated in ℥ij of æther with a gentle heat for some hours, in a distilling apparatus; let the portion which remains be triturated and boiled with ℥iv of alcohol; it having been previously macerated in it; filter and let the remainder be treated with fresh portions of alcohol, as long as any thing is taken up from the root; mix these alcoholic solutions and evaporate to dryness; let this alcoholic extract be macerated in cold distilled water, in order that every thing soluble in that menstruum may be dissolved; filter, and evaporate to dryness; this extract is Emetine. In this state however it contains a small quantity of gallic acid, but which is too inconsiderable to affect its medicinal qualities.