Invites JL to dine and meet J. S. Henslow.

Comments and criticisms on JL’s paper [possibly: "On the development of Chloëon dimidiatum", Trans. Linn. Soc. Lond. 24 (1863): 61–78].

JL’s brother’s accident.

Thinks JL should tackle systematics of anomalous insects from studies of internal organs.

CD sees JL’s cases of same organs varying greatly in allied forms as a serious difficulty in regard to his own ideas.

Development of aphids; apparent absence of vermiform stage.

Wants examples of insects (especially Diptera) in which embryo resembles adult, to show that the metamorphic stages may be lost.

Wants JL’s opinion on paper by L. J. M. Dufour ["Études anatomiques sur les insectes diptères de la famille des pupipares", C. R. Hebd. Acad. Sci. 19 (1844): 1345–55].

Asks JL not to call as he has a "very old friend" [J. S. Henslow] coming to visit him.

Yesterday visited poultry show at Crystal Palace.

Has told John Murray to send copy of the Origin. There are "many valid and weighty arguments against my notions".

CD’s former admiration for Paley’s Natural theology [1802].

Cares not for reviews [of Origin] but for opinions of men like Lubbock, Huxley, Hooker, Lyell.

Is preparing a reprint of Origin. Asks JL’s opinion on the book’s merits; values his judgment.

Local affairs and finances.

Dining with the Lubbocks.

JL’s paper on respiration of insects ["On the distribution of the tracheae in insects", Trans. Linn. Soc. Lond. 23 (1860–2): 23–50].