Credit: ©The Royal Society
    Image number: RS.17424

    Diagram in papers for Commercium Epistolicum

    Date
    10 December 1672
    Creator
    Unknown, Artist
    Object type
    Archive reference number
    Manuscript page number
    p20
    Material
    Dimensions
    height (page): 319mm
    width (page): 214mm
    Subject
    Description
    Diagram from a copied extract of Isaac Newton's letter to John Collins dated 10 December 1672, in which he showed that Renatus Franciscus Slusius's method of drawing tangents is a particular case of Newton's more general method. Another copy exists in this volume at MS/81/34/030.

    The Royal Society catalogue entry for MS/81/28 gives the date as 8 June 1675. However, on the page it says 'Out of Mr Newton's letter of the 10th of December 1672'. It is unclear whether the extract of this letter was made in 1672, or whether only the original letter was written then and MS/81 was mainly copied during 1674-75.

    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 (calculus).

    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).
    Transcription
    Endorsed 'No. 39: p. 123' [reference to the 1722 edition of Commercium Epistolicum].
    Out of Mr Newton's Letter of the 10th of December 1672
    Transcribed by the Making Visible project
    Object history
    An extracxt (without the diagram) printed in Commercium Epistolicum D. Johannis Collins, et aliorum De analysi promota (London: Typis Pearsonianis, 1712), p. 43; Commercium epistolicum D. Johannis Collins, et aliorum de analysi promota (London: J. Tonson & J. Watts, 1722), p. 123.
    Related fellows
    John Collins (1625 - 1683, British) , Mathematician, Mathematician
    Isaac Newton (1642 - 1727, British) , Natural philosopher
    Renatus Franciscus Slusius (1622 - 1685, Belgian) , Mathematician
    Associated place
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