Will send copy of second edition of HH's Essays on Scientific...Subjects (1862). Received letter from HH's friend and former patient Louis Napoleon, who will send copy of Napoleon's book on Gallic campaigns of Caesar.

Received JH's translation of fourth book of Iliad. Will return it with comments in a few days. Attended two or three excellent lectures by JH's son. HH needs to balance mental efforts with more physical activity.

Received manuscript of JH's translation of third book of Iliad.

Cites [C. F.?] Burdach as the source of a note on atavism in alternate generations.

Wants to talk to CD about inheritance.

Congratulations on the Copley Medal.

Thanks for Lythrum paper [Collected papers 2: 106–31].

T. S. Cobbold’s book on the Entozoa [1864].

Remarks on development of the tapeworm.

HH has nominated JH's son Alexander to fill a post become vacant by the death of Robert FitzRoy.

Thanks for "Climbing plants" [see 4861].

Has received a copy of an attack on CD ["Darwinian theory examined"] from the author, but does not know who it is.

Congratulations on George Darwin’s success at Cambridge.

Has still not discovered the author of "Darwinian theory examined".

Thanks for copy of Variation. Comments on it, especially on Pangenesis.

Sends CD a copy of a book he has had printed mainly for the interest of his children and grandchildren [later published as Recollections of past life (1872)].

JH's translation of first canto of Dante's Inferno (1868) is best HH has ever seen. Thanks for JH's commendation of HH's own translations [?]. More observations of soap bubbles.

References to works on probability;

statistics on proportion of sexes in births in England and Wales.

A month in the West Indies, where he saw the luxuriant struggle of tropical vegetation, has brought HH "still more closely within the circle" of CD’s doctrine.

Thanks for copy of Descent.

Sends CD a ptarmigan.

Has finished reading Descent and sends some comments [missing].