Several lines of a letter from Euler to the Royal Society dated 21 October/1 November 1768
This work is likely a translation of Euler's original letter into English.
This letter concerns dioptrics and lunar theory, and is identical to E364.
Original Source Citation
The Royal Society. Some accounts of the letters and papers of the period 1741-1806 in the archives, by A. H. Church, pp. 16.