Has “several times noticed eight permanent incisors instead of six in the jaw [of the horse]”.

Crying and the action of the orbicularis.

Thanks CD for his photograph.

Intends to start experimenting with mosses to determine which differences in structure are effected by altered conditions of life.

Notes on sexual differences within certain species of birds.

Development of complex language does not require an early civilisation. [See Descent 1: 56ff.]

Reports making graft-hybrid potatoes.

Has found direct action of pollen in Mays [Zea] crosses and apple-trees.

F. Delpino has asked for CD’s address.

Expresses his gratification on reading of Leonard Darwin’s high placing on the Sandhurst list.

CD has been elected a Corresponding Member of the Biology Section of the Académie Impériale des Sciences, St Petersburg.

Discusses mule canaries which show a tendency to revert to wild plumage colours.

Sends portion of his book, Grundlegung von Aesthetik [1869]. Argues that CD’s theory can be reconciled with religion.

Discusses Balanophora with conspicuous male flowers and absent female perianth.

Has sent off last portion of index [to Variation]. Hopes CD will be pleased with it. Will never undertake such labour again. He fears it has been an unfavourable way to make CD’s acquaintance. Trusts to CD’s goodness not to hate his name for the rest of his life.

Asks CD for memorandum giving his opinion on a proposal to move the site of the Calcutta Botanic Garden. Gives details of the position, the physical character and the climate of the present site to show how desirable a move would be.

Has seen CD’s "carte" offered for sale.

CD’s anxiety about the index [of Variation] will be relieved somewhat when he learns it has at last been set up.

Sends an article ["Des lumières que la géologie peut jeter sur … l’histoire ancienne des Athéniens"] extracted from his work [Animaux fossiles et géologie de l’Attique (1862–7)]. CD’s letters have been an encouragement.

Hopes the belief in transformation will gradually be accepted. For himself the idea in no way undermines his idea of spirituality and his respect for human dignity.

Hopes to continue his work on the genealogical relationship (enchaînement) of fossils.

Variations in the ocelli of Lepidoptera.

Encloses six pages from his catalogue of S. African butterflies [Rhopalocera Africae australis, 2 pts (1862, 1866)].

Has read sheets of Variation up to Pangenesis.

Thanks CD for cheque for £5.5.0 supplementing fee from J. Murray’s. Will return it if Murray provides an additional amount. Is glad CD is so well pleased. Sends notes for errata.

Sends a pamphlet by W. R. Greg [Malthus: re-examined by the light of physiology (1868)].

Many Cucurbitaceae have smaller male than female flowers.

Has written to H. C. Watson on the counterbalance [to variation] of crossing and uniform conditions. Watson has forgotten the argument.

Has written to F. Müller on abnormal Solanum.

Does not understand Hildebrand on potatoes.