Page "Imperial units" Paragraph 4

Apothecaries ' units are mentioned neither in the act of 1824 nor 1825.

At the time, apothecaries ' weights and measures were regulated " in England, Wales, and Berwick-upon-Tweed " by the London College of Physicians, and in Ireland by the Dublin College of Physicians.

In Scotland apothecaries ' units were unofficially regulated by the Edinburgh College of Physicians.

The three colleges published, at infrequent intervals, pharmacopoeiae, the London and Dublin editions having the force of law.