Credit: ©The Royal Society
    Image number: RS.17447

    Diagram in papers for Commercium Epistolicum

    Date
    21 June 1677
    Creator
    Unknown, Artist
    Object type
    Archive reference number
    Manuscript page number
    p5
    Material
    Dimensions
    height (page): 193mm
    width (page): 164mm
    Subject
    Description
    The original letter sent by Gottfried Wilhelm Leibniz to Henry Oldenburg dated 21 June 1677, written by an amanuensis, with corrections in Leibniz's hand. The diagrams show Leibniz's method of tangents and inverse method of tangents, i.e. differential and integral calculus.

    This volume contains the letters and papers of John Collins (1625-1683), which came into the possession of William Jones (1675-1749), who used them in Commercium Epistolicum, designed to prove Isaac Newton’s priority over Gottfried Wilhelm Leibniz in the invention of fluxions.

    The original letters were sealed up at the order of the Royal Society's council (25 October 1714) and stored in an iron chest. Further letters used in the 1722 edition of Commercium Epistolicum must have been added and stored with the original papers. These were ordered on 13 September 1737 to be ‘taken out of the Iron Chest’ and entrusted to Jones, who was asked to paste them into a guard-book in one volume (CMO/2/252, CMO/3/73).

    For Newton's review of Commercium Epsitolicum, see Philosophical Transactions of the Royal Society, vol. 29, no. 342 (January and February 1715), pp. 173-224.
    Transcription
    Endorsed 'No. 66: p. 191' [reference to the 1722 edition of Commercium Epistolicum].
    'Leibnitz's Letter in answer to Dr Newtons large one of 21 June 1677'
    Transcribed by the Making Visible project
    Object history
    Figure printed in Commercium epistolicum D. Johannis Collins, et aliorum de analysi promota (London: J. Tonson & J. Watts, 1722), p. 197.
    Related fellows
    John Collins (1625 - 1683, British) , Mathematician, Mathematician
    Henry Oldenburg (1612 - 1677, German) , Scientific correspondent
    Gottfried Wilhelm von Leibniz (1646 - 1716, German) , Natural philosopher
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