The Complete Work of Charles Darwin Online

RECORD: Darwin, C. R. n.d. I must show that opposed to my doctrine that changed condition causes variability. CUL-DAR45.40. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)

REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 10.2022. RN1

NOTE: See record in the Darwin Online manuscript catalogue, enter its Identifier here. Reproduced with permission of the Syndics of Cambridge University Library William Huxley Darwin. The volume CUL-DAR45 contains notes for Natural selection chap. 4 'Variation under nature'.

Loiseleur‐Deslongchamps, Jean Louis Auguste. 1. Considérations sur les céréales, et principalement sur les froments, (Partie historique). Paris, 1842, pp. 1‐109. III, 11, 44, 45. 2. Considérations sur les céréales, et principalement sur les froments, (Partie pratique et experimentale). Paris, pp. 1‐248. [In Darwin's copy, the two parts are bound together in one publisher's paper wrapper.

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Either in Chapter I or II. I think Chapt I. I must show that opposed to my doctrine that changed condition causes variability. Loiseleur Deslongchamps remarks on corn weed not varying — supported by H.C. Watson & Asa Grays facts. (see their correspondence) — I can understand not races made.— Alp. Decandolle remarks on this in regard to naturalized plants.— Perhaps requires greater change or longer change.— It cannot be great change for Corn-weed as they sow themselves.— If change be only slight may require enormous periods.— Some naturalized Plants

Plants

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have changed a little — in La Plata — Sonchus recognized in N. Zealand — introduced plants recognized in N. America see Asa Gray.— Mice introduced vary—

Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)