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The paper contains the results of an investigation into the structure of a series of advanced embryos of the common trout (Salmo trutta), exhibiting various degrees of symmetrical duplicity. Gemmill states that the object of the paper 'is to give an account of the anatomy of these monstrosities, and to explain by reference to details of structure the appearances attending the fusion, special adaptation, or complete loss of parts in the region of transition from the double to the single condition.'

Annotations in ink throughout. Includes one page of figures.

Subject: Zoology / Ichthyology / Embryology

Received 6 February 1901. Read 7 March 1901. Communicated by [John] Cleland.

Whilst the Royal Society declined to publish this paper in full, an abstract of the paper was published in volume 68 of the Proceedings of the Royal Society as 'The anatomy of symmetrical double monstrosities in the trout'.

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98 pages

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James Fairlie Gemmill

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James Fairlie Gemmill, Unpublished paper, 'A study of the anatomy of symmetrical double monstrosities [sic] in the trout' by James F [Fairlie] Gemmill, 1901, AP/74/15, The Royal Society Archives, London,, accessed on 21 July 2024

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  • Archived Papers

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is comprised of original manuscript scientific papers and letters submitted to the Royal Society which remained unpublished or were abstracted in the journal 'Proceedings of the Royal Society' published from 1830 onwards.

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