Comments at length on Ramsay’s glacial paper ["On the erosion of valleys and lakes", Philos. Mag. 4th ser. 28 (1864): 293–311]. Prefers it to Tyndall, but unconvinced about sea action and unwilling to grant that ice power sculptures the totality of landscape.

Unwilling to support Wallace for Royal Medal.

Herbert Spencer’s noisy vacuity.

Garden varieties that are constant and infertile with parent deserve to be called species.

Scott ineligible to be Linnean Society associate because he is not in England.

George Busk’s incoherent talk on Gibraltar cave fossils.

Thanks CD for notes concerning the development of his ideas about the origin of species. Says August Schleicher and Carl Gegenbaur also interested.

Names new supporters of CD’s theory, including Max Schultze, Rudolf Leuckart, and Alexander Braun. Zoologists have been more interested than botanists.

He is writing a general work on the relationships among animals [Generelle Morphologie der Organismen (1866)].

Comments on Fritz Müller’s Für Darwin [1864].

Gegenbaur is revising his Grundzüge der vergleichenden Anatomie [2d ed. (1870)] to accord with evolution.

Thanks CD for copy of book on balanids [Living Cirripedia, vol. 2].

Sends question [missing] for an ornithologist.

Is plodding on at Variation.

Has added to Climbing plants.

Proposes to work on geographical distribution before leaving the Society.

Thanks Balfour for Corydalis seed

and sends a photo of himself.

No summary available.

Sir Henry James does not wish to be connected with the new expedition to Sinai until the work of the previous one has been cleared. Will approach the Royal Geographical Society with his scheme. [H. S.] Palmer is the man to go on this expedition.

Mrs. Polko was gratified by JH's translation of Frederick Schiller's poem. She would like a photograph and autograph of JH now, and wonders if he would like a photo of her brother Edoard Vogel? HK would like some additional copies of JH's translations.

Is grateful for the photograph (which he considers bears a resemblance to Edoard Vogel) and also the extra copies of his translation, which he will transmit to friends in Germany.

Is grateful for his kind and flattering notice of his sonnet. Encloses Edoard Vogel's photograph.

Was pleased with JH's weighty and judicious rebuke. Sends a copy of a letter he wrote to the Times concerning religion and the natural sciences.

Encloses lithographs of some of his drawings of nebulae, and two tracings of [?] 2241. Has presented his large equatorial to Melbourne and invited the Astronomer Royal [G. B. Airy] to Malta to observe through the telescope before it is dispatched to Australia. Would also welcome a visit from JH.

Comments on the several drawings of the same nebulae; thanks WL for the invitation to Malta but JH is too ill to accept.

Professor W. J. M. Rankine lent JN JH's paper on the meter, yard, and foot. Would JH present a copy to the Institution of Engineers in Scotland? JN is president at the moment and hopes to introduce this subject. Hopes that JH will publish any further ideas he has on the subject.

Would like JH's permission to make public JH's letter of 1826-11-14 in defence of the conduct of the late Humphry Davy.

States unequivocally that the letter referred to in JS's 1864-10-11 has not 'a syllable' that can in any way affect the question of the conduct or character of the late Humphry Davy. JH could not conceive of publication of the letter without the express consent of the other person mentioned in it [Charles Babbage].

Received JH's letter of 1864-10-14 'with grief almost inexpressible.'

Notes introduction of 'Worthytype' process into commercial photography. Calls attention to process discovered by JH in 1832 for purifying uranium.

Encloses photograph of JH for Madame [Polko?]. Would like to receive photograph of [Edoard] Vogel. Will send six copies of JH's translations of J. C. F. Schiller's The Walk. JH corrected Schiller's error in line 85.

Resolution reappointing JH and others to Balloon Committee for further experiments.