[Observations on the Specimen alterum Pharmacopaeiae Londinensis.] Observations on the Pharmacopaeia Collegii Regalis Medicorum Londinensis, 1788; annexed to the Observations on the Specimen alterum Pharmacopaeiae Londinensis, 1787: pointing out many of their striking defects, and shewing the necessity for still further corrections ... in a letter addressed to the committee, selected ... to reform the old Pharmacopaeia