Thursday night
Dear Sir
After you have looked over this proof3 & corrected it if you find corrections necessary would you proceed & send it to the Editor of the Philosophical Magazine addressed thus
Wm Francis Esq | Red Lion Court | Fleet Street E.C. | Yours very truly | John Tyndall
RS MM/9/20
[Richard Thomas Lewis]: Addressee extrapolated from letter 1872. Next in sequence in Royal Society archive.
[April 1862]: Proof of letter 1871 (sent 25 March 1862) published in the May number of the Phil. Mag. This makes Thursday nights in April the most likely candidates.
this proof: published as R. Lewis, ‘On the changes in the apparent size of the moon’, Phil. Mag., (1862), pp. 380–82. See letter 1871 and 1872.
Please cite as “Tyndall1889,” in Ɛpsilon: The John Tyndall Collection accessed on