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Observations on the Specimen alterum Pharmacopaeiae Londinensis, 1787 : pointing out its many striking defects, and shewing the necessity for still further corrections ... Interspersed with a variety of formulae from that publication, and other new ones introduced: in a letter addressed to the Committee, selected out of the members of the Royal College of Physicians, to reform the Pharmacopoeia, a proof of which reformation is presented in the Specimen. Public Domain Mark. Source: Wellcome Collection.