image LBO_5_104a
Image number: RS.14790
Credit: ©The Royal Society

Diagram from Jean Picard's Mesure de la Terre

Date

9 January 1672

Object type

Archive reference number

Manuscript page number

p104a

Material

Dimensions

height (page): 450mm
width (page): 337mm

Subject

Description

Diagram from Jean Picard's Mesure de la Terre (1671), plate 2, which Francis Vernon reviewed in his letter to Henry Oldenburg dated 9 January 1672, Paris. Vernon's letter was read at the meeting of the Royal Society on 11 January 1672, and published as a review in Philosophical Transactions of the Royal Society, vol. 10, no. 112 (1675).

A copy of this diagram can be found at LBC/5/118a.

Object history

At the meeting of the Royal Society on 11 January 1672, ‘Mr. Oldenburg read a letter to him by Mr. Vernon from Paris, January 9, 1671/2, describing the method observed by Mons. Picart in measuring the earth, whereby it appeared, that he assigned 57060 Parisian toises or fathoms, numero rotundo, to a degree, or seventy-three English miles, reckoning five thousand feet a mile’ (Birch 3:3).

Tab. 1, figs 1-3 in Jean Picard, 'Account of the measure of Earth', Phil. Trans. vol. 10, no. 112 (March 1675), pp. 261-72. Ref to figs 1-3 at pp. 266, 271-72. The figures for Phil. Trans. are copied from J. Picard, Mesure de la terre (Paris, 1671), plate 2.

Related Fellows

Francis Vernon (1632-1677, British), Traveller
Henry Oldenburg (1612-1677, German), Scientific correspondent

Associated place

<The World>
   > Europe
      > France