RECORD: Darwin, C. R. [1875-1880]. Draft leaf of Earthworms, folio 4 / pp. 28-29, and Cross and self fertilisation, folio 383 / p. 199. LINSOC-DWC.2.7. (Cite as: John van Wyhe ed., 2002-. The Complete Work of Charles Darwin Online, http://darwin-online.org.uk/)

REVISION HISTORY: Catalogued, transcribed and edited by John van Wyhe 3.2026. RN1

NOTE: See record in the Darwin Online manuscript catalogue, enter its Identifier here. Reproduced with permission of the Linnean Society of London and William Huxley Darwin. LINSOC-DWC.2 consists of an album of draft leaves of Darwin's books, Earthworms, Insectivorous plants, Cross and self fertilisation, Expression, and Power of movement deposited by The Charles Darwin Trust.

This rough draft of Darwin's book on worms was transferred to the family scrap paper pile after creation of the fair copy, which is now in CUL-DAR24 & CUL-DAR25.


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(4

(They The bodies are  whole body of a worm is highly  sensitive to contact. A slight puff of the air from one's the mouth causes an instant retreat. The glass plates which had been  placed on the pots did not fit closely, & I found that blowing through the narrow chinks thus left sufficed to cause a rapid retreat. Even the eddy They sometimes perceived the eddies in the air caused by lifting removing  quickly quickly removing the glass-plates. by quickly removed from the pots (no jar being used these casessometimes activ When a worm first emerges from its burrow, it generally moves its much extended anterior extremity from on all side to side,  from side to side,   apparently as an organ of touch; & when so the manner in which they draw leaves into their burrows is described we shall we shall [illeg] see reason for believing that they are thus enabled then to acquire by [illeg]  a general  notion of the form of an object.— Of all their senses, that of touch, including in this term that of vibration, seems much the most highly developed.—)

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383

Petunia

previous generations with the exception of the abnormal case plants of the third generation. On the other hand the Westerham-crossed plants are exceeded in height by the intercrossed; and this is a surprising fact, judging from  all the  other strictly analogous cases. But as the Westerham-crossed plants were still growing vigorously, while the intercrossed had almost ceased to grow, there can hardly be a doubt that if left to grow    for another month   they would ultimately have beaten the intercrossed in height. That they were gaining on them is clear, as when measured before they were as 100 to 119, and now only as only 100 to 108 in height. The Westerham-crossed plants had also leaves of a darker green, and looked altogether more vigorous than the intercrossed; and what is much more important, they produced, as we shall presently see, many more seed-capsules. So that in reality the cross with a fresh stock did give to  fact   the offspring of  from the self-fertilised plants of the fourth generation   crossed by a fresh stock were     a greatly advantage over  superior to   the intercrossed, as well as over  to  the self-


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

File last updated 14 March, 2026