RECORD: Darwin, C. R. [1870-1871]. Draft of Descent, Chap. I, folio 30. HL-HM-80997. Edited by John van Wyhe (Darwin Online,

REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 11.2022. RN1

NOTE: See record in the Darwin Online manuscript catalogue, enter its Identifier here. Reproduced with the permission of the Huntington Library, San Marino, California and William Huxley Darwin. With thanks to Daniel Lewis. The manuscript is signed by Darwin as a gift. This is apparently the draft sold at Sotheby's in November 1974: "Autograph MS.s. of a page of Chapter I of The Descent of Man, 1p. folio. The text occurs at pp. 23-24 of the first edition. This manuscript has deleted sentences, and some variations." Sold for $950.

The text of the draft corresponds to Descent 1: 23-4.



[later insertion by Darwin:] Ch. Darwin─ Descent of man.─

Ch. I

its correlated accessory muscles & other structures, is formed especially well developed in birds, in which it & is of high functional importance, as it can be rapidly drawn across the whole eye-ball.

It is found in some reptiles & amphibians, & cru in certain fishes, as in sharks. It is fairly well developed in some few of the higher mammals as in the walrus & in a less degree in the elephant the two lower divisions of the mammalian series, namely the monotremata & marsupials, & in some few of the higher mammals, as in the walrus. But in man, all the g monkey Quadrumana, & some other mammals, it is exists can admitted by all anatomists to exist as a mere useless rudiment under the name of the semilunar fold. *26)

(The sense of smell is of the highest importance to most the greater number of mammals—to some, as the ruminants, in warning them of danger; to others, as the carnivora, in finding their prey, to others, as the wild-boar, for both purposes combined. But the sense of smell is of extremely slight

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Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (

File last updated 31 October, 2023