10th Feb. 1864
Dear Sir
I have forwarded your paper1 to Mr. Francis,2 altering nothing therein. Mr. Gyll3 is of course merely kicking against the pricks.4 But it was thought desirable to allow a practical writer to state his own case.
Yours very truly | John Tyndall
James Croll Esq[ui]re
BL Add MS 41077, f. 9
Please cite as “Tyndall2072,” in Ɛpsilon: The John Tyndall Collection accessed on