Admires THH’s article on Kölliker’s and Flourens’ criticisms of Origin [in Natural History Review (1864): 566–80].

Appreciates THH’s note more than Medal.

Encourages THH to write a popular treatise on zoology.

Sends Mrs Huxley a quotation from Tennyson, with sarcastic comment.

Thanks for photograph, charmed by Mrs Huxley’s letter.

Regrets THH cannot do the popular work on zoology.

Has heard THH wrote leading article in last Reader ["Science and ""church policy"" ", 4 (1864): 821].

Thanks for Catalogue.

Has had a bad month. Somewhat improved as a result of John Chapman’s ice-bag cures.

Asks THH to read MS on his hypothesis Pangenesis. THH only man whose judgment on it would be final with him.

Thanks for THH’s willingness to read Pangenesis MS. Thinks some such view will have to be adopted but it overthrows, in an uncomfortable manner, ordinary development.

Thanks THH for reading Pangenesis MS. Will read Buffon and Bonnet (as he does not want to republish their views) and will try to persuade himself not to publish.

Has read Buffon; whole pages are like his own. But CD is not converted to non-belief. There is a fundamental distinction between Pangenesis and Buffon. Fears he may not resist publishing it, but will be cautious.

Has done nothing since 1 May. Slowly getting better under Bence Jones’s diet.

The Reader has been sold – would regret its failure as a newspaper for general science.

Pangenesis is recovering from shock it received from THH’s criticism.

Sends a draft of memorial to Admiralty [to be signed by geologists and palaeontologists] requesting that an expedition to survey Strait of Magellan collect fossils discovered by Admiral B. J. Sulivan [see 5142].

First impressions of Haeckel’s Generelle morphologie.

Has received THH’s [Lessons in elementary] Physiology [1866]

and reread Man’s place.

Asks THH to read revised "Hybridism" chapter in new edition of Origin. Hopes it will change THH’s view.

Convinced of P. S. Pallas’ view of loss of sterility under domestication.

Gives up plan to have Haeckel’s Generelle morphologie translated.

His big book [Variation] has gone to printer. Thinks of adding a chapter on man.

Will order Duke of Argyll’s book [Reign of law (1867)].

"Nature never made species mutually sterile [by selection]; nor will man.–"

THH’s offer to read proof of essay on man encourages CD to write with satisfaction instead of a vague dread.

Begs Mrs Huxley not to forget corrugator supercilii in a crying child.

Asks THH to think about a better name for "Pangenesis"; suggests "Cytarrogenesis" or "Atomogenesis", but still prefers vaguer "Pangenesis".

Thanks for congratulations.

Doubts THH’s response to Pangenesis will give him pleasure. "Oh Lord what a blowing up I may receive."

Still thinks THH has been too "sharp sighted" on hybridism.

Sends Mrs Huxley Queries about expression.

Questions on marmosets and the vocal organs of Hylobates.

W. S. Dallas asks whether Ray Society would publish translation of Haeckel’s Generelle morphologie. If THH thinks suggestion good, he might make inquiries.

Family news.

Has come to Freshwater for five weeks for his health. Sends regrets to Prof. Kühne at not being able to see him.

Sends a page to be sent on to Charles William Nunn.

Offers sympathy for the illness of THH’s son, Henry (Harry) Huxley.

Wishes he could have attended the British Association for the Advancement of Science meeting at Norwich.

Asks for a ticket for THH’s lecture at the Royal Institution for WED. With ED’s and HED’s forgeries of CD’s signature.

At writer’s request, forwards long letter on Comte by Vernon Lushington.