Credit: © The Royal Society
    Image number: RS.10804

    Diagram of a giant clam

    Date
    1857
    Creator
    John Denis Macdonald (1826 - 1908) , Naval medical officer
    Object type
    Archive reference number
    Material
    Dimensions
    height (painting): 306mm
    width (painting): 190mm
    Subject
    Content object
    nature
       > animal
    Description
    Diagram showing the main anatomical features of the Tridacna, a giant clam from the Pacific Ocean. Showing the circulatory, respiratory and digestive systems.

    This bivalve mollusc was described by the author aboard HMS Herald in March 1857 as the vessel was engaged in surveying work in the south-western Pacific. The author, John Denis Macdonald was assistant surgeon on the ship.

    Figures 9 from the manuscript version of the paper “On the anatomy of Tridacna’ by John Denis Macdonald, in Proceedings of the Royal Society of London, vol.8 (1856-1857), pp.589-590.

    Monogrammed lower left: ‘J.D.M. March 1857’.

    Sir John Denis Macdonald was elected a Fellow of the Royal Society in 1859.
    Associated place
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