He is not grieved at CD’s omissions of his [JDH’s] work [from Origin, 4th ed.]. It proves nothing – claims only to be illustration of using CD’s methods.

In London for the Botanical Congress; regrets missing CD.

Lyell and CD have mistaken H. Lecoq’s position on glaciers. He has not denied the possibility of a glacial period, only that decreased temperature is needed for their extension.

Recommends F. J. Ruprecht on vegetable detritus in the black earth chernozem of Russia.

Sends blooms of Cytisus purpureus-elongatus.

Identifies a plant.

CD will not find Hermann Schacht’s Lehrbuch [der Anatomie und Physiologie der Gewächse (1856–9)] at the Linnean Society Library.

Data on good and bad pollen-grain yields of different species. Sends sketches of two male Rhamnus catharticus flowers [see Forms of flowers, p. 294].

Sends proofs [of "On hybridization among plants", Pop. Sci. Rev. 5 (1866): 304–13].

Regrets delay in returning CD’s books.

Encourages CD to make "disparaging remarks".

Thanks for criticism of proofs of his paper [see 5117].

Not sure whether CD believes in reversion and would like a positive statement as this is the one point C. V. Naudin especially observed. Naudin offers his remarks on ovules as a matter to be proved ["Nouvelles recherches sur l’hybridité", Nouv. Arch. Mus. Hist. Nat. 1 (1865): 25–176].

Will take earlier train to Down.

Sends some specimens of three kinds of buckthorn.

In response to CD’s request for bud-sports, he sends a piece of a fern-leaved beech.

Has altered paper according to CD’s comments.

Returns books.

Thinks Rhamnus is a case of a dimorphic plant that has become dioecious.

"It [Rhamnus catharticus?] is certainly a case of dimorphic become dioecious."

Ovules of males of two forms [of Rhamnus catharticus?] are abortive and both females have incomplete stamens.

He has had a great struggle with Buckthorn, and would like CD to see the measurements some time.

Reports on his health.

Discusses a surveying expedition under Richard Charles Mayne on which his son will be Second Lieutenant; hopes to arrange for them to excavate some bones in the Falklands.

Sends flowers of the differing kinds [of Rhamnus?] with observations.