Hence the inutility of the pharmacopeial tinctura podophylli, which cannot be diluted before administration.
They contain a volatile oil which does not occur in the corm, and their proportion of colchicine is higher, for which reason the Tinctura Colchici Seminum- dose 5 to 15 minims - is preferable to the wine prepared from the corm.
It was at this time too that the many-sided Alexius invented his famous "drops," or tinctura toniconervina Bestuschefi, the recipe of which was stolen by the French brigadier Lamotte, who made his fortune by introducing it at the French court, where it was known as Elixir d'Or.
In British pharmacy gall-nuts are used in the preparation of the two astringent ointments unguentum gallae and unguentum gallae cum opio, and of the tinctura gallae, and also as a source of tannin and of gallic acid.
The pharmacopoeial preparations of this acid are a 2% solution, which is given in doses of from two to six minims, the tinctura chloroformi et morphinae cornposita, which contains a half-minim of this solution in each ten minims, and the aqua laurocerasi, which owes its virtues to the presence of this acid, and is of inconstant strength, besides being superfluous.
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