Thanks JM for present of McClintock’s work [Sir Francis Leopold McClintock, The voyage of the "Fox" in the Arctic seas (1859)], which he and his wife look forward to reading.

Asks to be told when reprint [of Origin] is ready.

Sends Origin to FJP. "I rest my conviction solely on the fact, as it seems to me, that the theory explains large classes of facts otherwise inexplicable." Has made important converts: Lyell, Hooker, Huxley, and W. B. Carpenter.

Thanks for AG’s Japan memoir [Mem. Am. Acad. Arts & Sci. 6 (1857–9): 377–452]. Does not think AG’s arguments for a warm post-glacial period are sufficient, but will not be sorry to be proved wrong.

Believes natural selection explains many classes of facts which repeated creation does not.

Writes of some responses to the Origin.

Sends MS on pigeons for THH’s lecture at Royal Institution.