JL’s brother’s accident.
Thinks JL should tackle systematics of anomalous insects from studies of internal organs.
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JL’s brother’s accident.
Thinks JL should tackle systematics of anomalous insects from studies of internal organs.
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.
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.
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.
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].
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.