The pharmacopoeia of the Royal College of Physicians of London / Translated into English, with notes ... by Thomas Healde.

Date:
1793
Catalogue details

Licence: Public Domain Mark

Credit: The pharmacopoeia of the Royal College of Physicians of London / Translated into English, with notes ... by Thomas Healde. Source: Wellcome Collection.

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    We employ the pound of the goldfmiths, which we divide in this manner: The pound The ounce j The dram | The fcruple J contains r twelve ounces eight drams, three fcruples. twenty grains. The meafure likewife of liquids in this country differs : one being ufed for beer, and another for wine. We adopt the lat- ter ; ufing that meafure for a pint which is called a wine-pint. This pint we divide thus : The pint 7 . ffixteen ounces. r c contains 1 . The ounce J t eight drams. The gallon contains eight pints. the Avoirdupois only 4374 grains: that is, lefs by 42^ grains: fo that ten ounces Troy are almoft equal to eleven Avoirdupois. Now, as the compofitions of the Difpenfatory, and the extemporaneous prefcriptions of phyficians, are adapted to the Troy-weight, it is evident, that, if the ounce and half-ounce Avoirdupois are em- ployed with the Troy dram and its fubdivifions, the in- gredients muft be taken in improper proportions. It is to be lamented that the Avoirdupois weights are not ba- nifhed entirely from thefhops of apothecaries, As
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