Will give printer orders to set up first six chapters of Origin [6th ed.]. Murray thinks a glossary [of scientific terms] might be advisable, if not longer than ten pages. Will offer W. S. Dallas £10 for it.

Is preparing paper on breeding ["Breeding facts and principles", J. Farmers’ Club (1871): 45–53]. Seeks CD’s advice and assistance. Believes male parent influences external appearance and female the internal organisation.

Asks whether THH has written on affinities of Eocene cetacean Zeuglodon. Wants to cite it in 6th ed. of Origin as in some slight degree an intermediate form, but does not know how far he may venture.

Has had more evidence of profound impression of Mivart’s book [Genesis of species].

Is preparing a work on fertilisation of flowers, and wants to add a list of works containing observations on cross-fertilisation of plants. Asks CD for any references he may have.