[Responding to HS's 1859-12-31,] JH presents additional problems in the nebular hypothesis, critiques in detail HS's views of the distribution of cometary orbits, and argues against HS's theory of sunspot formation.

Has prepared a historical sketch [of writers on origin of species] for foreign editions of Origin. It includes HS. He was too ill to provide it for the 1st ed.

Sorry Murray has not sent HS his copy of Origin, as he was instructed.

Huxley will put CD and E. A. Darwin down for HS’s gigantic [publishing] programme. Suggests Dr Drysdale be approached about it.

HS put the case of selection strikingly and clearly in his article [Anonymous, "A theory of population, deduced from the general law of animal fertility", Westminster Rev. 57 (1852): 468–501]. Of CD’s numerous private critics only HS has rendered the philosophy fairly: his argument is an hypothesis that explains groups of facts.