Credit: ©The Royal Society
    Image number: RS.14953

    Diagram

    Date
    9 January 1670
    Creator
    Unknown, Artist
    Object type
    Archive reference number
    LBC
    Manuscript page number
    vol3 p269
    Material
    Dimensions
    height (page): 300mm
    width (page): 179mm
    Description
    Diagram from John Wallis's letter to Henry Oldenburg refuting Thomas Hobbes's method of squaring the circle (as printed in Hobbes, Quadratura circuli, cubatio sphaerae etc. (London: A. Crooke, 1669)). Wallis circulated his printed refutation, Thomae Hobbes Quadratura circuli (secundo edita) denuo refuata (Oxford: L. Lichfield for O. Pullein, 1669), which was presented to the Royal Society on 9 January 1670.

    This is a copy of LBO/3/223a.
    Object history
    At the meeting of the Royal Society on 13 January 1670, ‘There were presented from Dr. Wallis two books published by him, one intitled, Mechanica, sive de motu tractatus geometricus; pars prima: London 1670 in 4to; the other intitled, Thomae Hobbes Quadratura circuli secundo edita denuo refutata: printed at Oxford in 1669’ (Birch 2:415).
    Related fellows
    John Wallis (1650, British) , Mathematician
    Henry Oldenburg (1612 - 1677, German) , Scientific correspondent
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