Thanks for queen-bee larva and pupa.

Nervous system of Coccus.

Is sorry to hear of bad health of CD and his daughter.

Discusses, with an example, the difficulty of explaining structural differences between closely allied species.

Embryology of Diptera. Development of insects; metamorphosis. JL feels all insects go through metamorphosis but that in some of them, part takes place before birth.

Gives CD references to papers on eyes of lower animals.

Sends paper [on ancient Swiss lake-habitations, Nat. Hist. Rev. n.s. 2 (1862): 26–51] for CD’s opinion.

Grateful for CD’s approval of "Lake-habitations".

Will visit CD on Saturday.

Sir George Clerk to be new President of the Zoological Society.

Hopes CD will come to lunch on Saturday. The Busks and J. D. Hooker are with JL.

JL is going on a geological excursion with Joseph Prestwich and John Evans.

Thanks for Orchids.

"The big book [Variation] will no doubt go on again now."

JL is writing on Somme implements ["Evidence of antiquity of man", Nat. Hist. Rev. n.s. 2 (1862): 244–69].

JL’s Swiss tour with Tyndall and Huxley.

Lake-habitations.

CD’s health is bad.

Would like to visit CD on Friday.

Hopes to visit tomorrow if CD is up to it.

Thinks Bates’s paper on mimetic butterflies ["Contributions to an insect fauna of the Amazon valley", Trans. Linn. Soc. Lond. 23 (1862): 495–566], is very good; would appreciate an article on it from CD ["On mimetic butterflies", Nat. Hist. Rev. (1863): 219–24; Collected papers 2: 87–92].

Thanks CD for agreeing to review Bates’s paper for Natural History Review.

Is pleased by CD’s praise of his article.

Hugh Falconer’s is certainly interesting.

Dining arrangements.

Will come to dine on Monday unless he hears to the contrary.

Thanks CD for his review [of H. W. Bates’s paper on mimetic butterflies, Collected papers 2: 87–92].

Is glad Hooker approved of his [JL’s] lecture.