CONTRACTIONS EMPLOYED IN THIS WORK.

I have used but few contractions in the formulae, and other parts ofthe book, as they are apt to lead to mistake. The following are the -chief:

L. London Pharmacopoeia, 1824.E. Edinburgh Pharmacopoeia.D. Dublin Pharmacopoeia.P. Paris Codex.

L. E. D. P. London, Edinburgh, Dublin/and Paris.O. Old name.V. Vulgar name.Linn. Linnaeus.Spec. Grav. Specific Gravity,q. s. Quantum, sufficiat, that is " enough."Gr. Grain.Scruple.Drachm.Ounce.Pound.Pint.Cong. Gallon.

11^ Minim, a measured drop,ss. Semisse, half, as gr. ss. " half a grain."j One, as try, " one minim," or drop.I have not inserted the f. for fluid before the ounce and drachm mea-sures ; because, although it is a decided improvement, it is not recognizedin Scotland, and might tend to puzzle those who have not been educatedin the London School, while its insertion in one place, and not in an-other, would have injured the uniformity of the formulae.

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COMMON CONTRACTIONS IN MEDICAL PRESCRIPTIONS.

A a A. Ana, of each ingredient.

Abdom. Abdomen, the belli/.

Abs. Feb. Absente febrc, in the absence of the fever.

Acet. Acetas, acetate.