Credit: ©The Royal Society
    Image number: RS.14638

    Egg with a cap on one end

    Date
    25 July 1685
    Object type
    Archive reference number
    Manuscript page number
    p204
    Material
    Dimensions
    height (page): 321mm
    width (page): 200mm
    Subject
    Biology
       > Anatomy
    Biology
       > Zoology
    Biology
       > Zoology
          > Ornithology
    Description
    Drawing of an egg with a cap at one end. The cap, made of the same material as the shell but not continuous with the shell, covered a round hole at one end of about 1/2 inch diameter. The egg was sent to Robert Plot from Yorkshire and he presented it to the Philosophical Society of Oxford on 21 July 1685. This egg was communicated in a letter from William Musgrave to Francis Aston, 25 July 1685. The letter was read to the Royal Society on 29 June 1685.

    The image is copied in LBC/10/254.
    Object history
    At the meeting of the Royal Society on 29 July 1685, ‘A letter of Mr. Musgrave to Mr. Aston, dated at Oxford, July 25, 1685, was read, mentioning lignum fossile, cornu ammonis, and ostracites, dug out of a well near Faringdon; an egg-shell having a loose cap rising up at one end of the same matter with the shell; and a wild Virginia rat’s skin above four feet long from the nose to the anus’ (Birch 4:423).

    At the meeting of the Oxford Philosophical Society on July 21st, 1685, ‘Dr. Plott presented a Persian wood, which was observ’d to sink in water; & a Hen’s egge sent him from out of York-shire, having a round hole at one end of about ½ inch Diameter: this hole was exactly fitted by a little cap of ye same matter with ye rest of ye shell, but more protuberant, than ye end of an Egg-shell is naturally, & full of wrinkles; the Cap is said not to have been continued to ye main body of ye shell, but sticking close by it’s inner side to ye membrane was by these meanes kept as a cover on ye hole’ (Robert T. Gunther, Early Science in Oxford, 14 vols (Oxford: R. T. Gunther, 1923-45), IV (1925) The Philosophical Society, 158).
    Related fellows
    William Musgrave (1735 - 1800, British) , Physician
    Francis Aston (1644 - 1715, British) , Natural philosopher
    Robert Plot (British) , Natural historian
    Associated place
    <The World>
       > Europe
          > United Kingdom
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