Pharmacopoeia officinalis Britannica, or, A new translation into English of the last edition of the Pharmacopoeia of the Royal College of Physicians of London : with which are incorporated all the formulae of the Dublin and Edinburgh colleges in alphabetical order ; together with notes explanatory of the different processes, a correct table of old and new names, and a copious index / by Richard Stocker.

  • Royal College of Physicians of London.
Date:
1816
Catalogue details

Licence: Public Domain Mark

Credit: Pharmacopoeia officinalis Britannica, or, A new translation into English of the last edition of the Pharmacopoeia of the Royal College of Physicians of London : with which are incorporated all the formulae of the Dublin and Edinburgh colleges in alphabetical order ; together with notes explanatory of the different processes, a correct table of old and new names, and a copious index / by Richard Stocker. Source: Wellcome Collection.

Provider: This material has been provided by King’s College London. The original may be consulted at King’s College London.

    454/480 (page 436)
    and lighter part through a sieve. Lastly, pour water upon this, so that it may be reduced to a very fine j)o\vder in the manner directed for the preparation ot chalk. Greta prseparata. r>y the application of heat in close vessels zinc may be volatilized without undergoing anydiange; but exposed, as in the present j roec ss to the combined action ot heat and air, it readily decomjjoscs the latter, and burning with a dazzling white flame is converted into an oxyd. In this, however, small particles of metallic zinc are generally entangled, winch it is intended should be separated by the sifting and eluiriaiion here directed. This oxyd, or ratlier carbonated ox) d, we are told, may be ntore advantageously procured in decomposing sulphate of zinc In’ suhearbonate of potash. If solutions consist- ing of about eight parts of the (ormcr and five of the latter, be boiled together for a sliort time, a very light wliite precipitate is procured, containing about twelve per cent, of c.)rb(.nic acid. Should the sulphate of zinc be contaminated with oxyd ol inm (as is generally tlje case uitii the white vitriol of the shops) this may be separated by potash, j)reviously to the precipitation of the oxyd of zinc by the subcarbonate. “ London Med. Rev. No. X. ZIXCl OXYDI, UNGUENTUM, d. e. ZINCI, OXIDUM IMPURUM PRiE- PARATUM, E. &c. vide Unguentum Zinc!; Tutia prfcpa- rata, &c.