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Unpublished paper, 'Researches on cinchona alkaloids: critical examination of the ordinary methods employed for the discrimination of the cinchona alkaloids, quinine, quinidin, quinicine, and cinchonine, cinchonidin, cinchonicine, together with the optical and chemical characters of their iodo sulphates, upon which new methods are founded' by William Bird Herapath

Reference number: AP/40/3

Date: 1855-1857

Description

Herapath explains that 'in consequence of the gradually increasing scarcity of the cortex cinchonae calysayae and its chief product quinine, many other barks have been introduced into commerce, which furnish alkaloids having a strong general resemblance in the physical characters of those preparations of them more commonly employed in medicine, but differing widely in medicinal properties and commercial value.' He presents a critical examination of the ordinary methods employed for the discrimination of the cinchona alkaloids, together with the optical and chemical characters of their iodo-sulphates, upon which new methods are founded.

Annotations in pencil and ink throughout. Includes five photographs and three plates of figures with accompaning descriptions.

Subject: Chemistry

Received 19 June 1857 / 23 October 1857. Communicated by [George Gabriel] Stokes.

Whilst the Royal Society declined to publish this paper in full, an abstract of the paper was published in volume 9 of the Proceedings of the Royal Society as 'Researches on the cinchona alkaloids'.

Reference number
AP/40/3
Earliest possible date
1855-1857
Physical description
Ink on paper
Page extent
144 pages
Format
Photograph
Drawing
Manuscript

Creator name

William Bird Herapath

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Citation

William Bird Herapath, Unpublished paper, 'Researches on cinchona alkaloids: critical examination of the ordinary methods employed for the discrimination of the cinchona alkaloids, quinine, quinidin, quinicine, and cinchonine, cinchonidin, cinchonicine, together with the optical and chemical characters of their iodo sulphates, upon which new methods are founded' by William Bird Herapath, 1855-1857, AP/40/3, The Royal Society Archives, London, https://makingscience.royalsociety.org/items/ap_40_3/unpublished-paper-researches-on-cinchona-alkaloids-critical-examination-of-the-ordinary-methods-employed-for-the-discrimination-of-the-cinchona-alkaloids-quinine-quinidin-quinicine-and-cinchonine-cinchonidin-cinchonicine-together-with-the-optical-and-chemical-characters-of-their-iodo-sulphates-upon-which-new-methods-are-founded-by-william-bird-herapath, accessed on 08 February 2025

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    Dates: 1768-1989

    The 'Archived Papers' collection is comprised of original manuscript scientific papers and letters submitted to the Royal Society which remained unpublished or were abstracted in the journal 'Proceedings of the Royal Society' published from 1830 onwards.

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