Will proof-read his preface to Weismann’s Studien.

Requests name of the publishers of RM’s translation of Weismann’s Studien.

Apologises for the trouble he has caused RM. Encloses letter [13280] which has been returned to CD [by August Dupré, to whom CD had sent it in error].

Regrets he can add no more to his preface for Weismann’s Studies. Offers donation to aid with publishing expenses.

Thinks RM’s preface is excellent.

Agrees to propose RM for the Royal Society.

RM’s application to the Royal Society.

Thanks RM for information on case of hexadactyly [see RM’s paper, "Hexadactylism", Land and Water, 11 March 1871, p. 179.

Mentions the difficulties in explaining the separation of sexes and Carl Nägeli’s view that the sexes of plants were primordially distinct.

Has been experimenting for five or six years to demonstrate that the benefits of crossing are the same as those derived from a slight change of conditions.

Discusses the problems of mimicry as related to natural selection; the general variability of colour as a character; and the conditions necessary for natural selection to fix firmly a character.

Encloses a Fritz Müller letter speculating that organisms respond to certain colours because of the prevalence of those colours in their environment.

Invites RM to keep some specimens as long as he wishes.

Recalls vaguely the mention of a butterfly species in which the male alone is mimetic.

Feels it would be worth while but difficult to investigate mimicked and mimicking forms for structural similarities that would indicate a closer alliance in the past.

Thanks RM for note on ocelli.

Thanks RM for his paper on mimicry.

Cannot answer RM’s query because he believes it impossible to define large variations.

Believes monstrosities are generally injurious and are not often, if ever, taken advantage of in nature.