Cannot provide plants CD requested.

Has sowed several kinds of lettuce seed near each other and has never observed them to cross naturally [see Cross and self-fertilisation, p. 173 n.].

Answers CD’s questions about his experiments with primroses, cowslips, and oxlips. HD is aware experiments must often be repeated many times. Has never met with the oxlip except where primrose and cowslip grow together.

Cases of "dioecio-dimorphism" as in primroses are widespread. AG always considered them the first step toward bisexuality.

Glad to hear good news of Etty [Henrietta Darwin].

CD’s observations on Scaevola are capital. The indusium collects the pollen and is the homologue of the pollen-collecting hairs of Campanula. A boat-shaped organ forms a second indusium, the inside base of which forms the stigmatic surface. The latter later protrudes as horns, forming the stigma.

Describes W. H. Harvey’s scientific career and thinks his letter interesting. Agrees with Harvey that the primary agency of natural selection is as great a mystery as ever. [Response to 2823.]

Rejects CD’s comparison of natural selection with the architect of a building. The architect who plans and oversees construction should not be confused in his function with the wisest breeder. That would be to deify natural selection.

Sends a plan of the Anwick Estate: will value it on Saturday next (23 June 1860).

Will purchase it for CD at the auction on 25 June if he can secure favourable terms.

Observations on moths visiting flowers.

Sees Huxley’s deification of matter and force as a reaction to the way Paley likened the "Unknown Cause" to the mind of man so that new causes could be introduced. If you wish to retain free will which is inconsistent with constant law, Paley’s position is better. Free will is a recently introduced cause on our planet. It cannot be fully attributed to secondary causes.

What CD says about the variation in gestation of the hound is remarkable.

The astonishing fertile rabbit–hare hybrids encourage belief in Pallas’s theory of the multiple origin of dogs.

Does the regularity of gestation in man indicate a common stock?

Hooker’s observation of absence of forms peculiar to extra-Arctic Greenland indicates that the time since the beginning of the glacial period is brief in geological terms.

Has not received any replies from the parties.

Either he or his son will value the property after JH’s return to Alford.

Hopes to make observations on moths pollinating clovers.

JDH reports on the debate on the Origin at Oxford [BAAS] meeting.

Hyaena remains show how recently Sicily was joined to Africa.

Reports on the Oxford meeting of BAAS.

Elaborates on his article ["A popular exposition of Mr Darwin on the origin of species", Macmillan’s Mag. 3 (1860): 81–92]. Was anxious to point out that CD’s method of investigation is philosophically correct. Asks permission to call.

CD mistaken, in Origin, p. 73, in saying that only humble-bees visit red clover.

Announces great ally for CD: K. E. von Baer "worth all the Owens & Bishops that ever were pupped". Quotes Baer: "J’ai énoncé les mêmes idées que M. Darwin", but based only on zoological geography.

Offers to supply CD with information about a new "race" of bees with a larger proboscis. They produce more honey as a result of being able to probe to greater depths.

Continues earlier discussion, admitting his opinions have been modified. Still regards natural selection as one agent of several. States areas of disagreement.

Objections to Origin which Owen and Wilberforce could have used. Why have incipient mammalian forms not arisen from lower vertebrates on islands separated since Miocene period? Knows CD would not derive Eocene Mammalia from higher reptiles, but would bats not be modified into other mammalian forms on an ancient island? This is not the case in New Zealand. Why have island seals not become terrestrial? Assumes rate of change is greatest in mammals. Difficulties are small compared with ability to explain absence of Mammalia in pre-Pliocene islands. Asks about descent of Amblyrhynchus. Believes objections apply equally well to independent creation of animal types, but not if the First Cause is allowed completely free agency.

Cases of monstrosities becoming transmissible.

Comments on passages in Origin on the blindness of the tucu-tucu (Ctenomys) and Mammoth Cave rats.

Discusses the possibility of a land-bridge connecting Biscay with Ireland and the consequent occurrence in southern Ireland of Asturian plants which are absent from England.

Asks if Hooker or anyone has criticised Edward Forbes’ botanical migration of five floras in the British Isles ["On the connexion between the distribution of existing fauna and flora of the British Isles, and the geological changes which have affected their area", Mem. Geol. Surv. G. B. 1 (1846): 336–432].