(11 février 1751) 31 janvier 1750 : À la Royal Society :
The President upon this occasion took notice to the Society that, that he had received a paper from M[onsieu]r Clairaut, containing the retractation of his now doctrine [C. 40], as also a paper from Mr Machin, containing his observations on the same subject; of the receipt of both which papers he had formerly acquainted the Society [cf. (13 février 1749) 2 février 1748]. But that their authors having desired that these papers should remain sealed up, till they gave leave for the publication of them [cf. (12) 1 juin 1749], they accordingly continued in his custody so sealed up (RS, JBC 20, p. 437).
Courcelle (Olivier), « (11 février 1751) 31 janvier 1750 : À la Royal Society », Chronologie de la vie de Clairaut (1713-1765) [En ligne], http://www.clairaut.com/npo11fevrier1751pf31janvier1750.html [Notice publiée le 6 octobre 2010].