RECORD: Darwin, C. R. [1880]. Draft leaf of Earthworms, folio ? / p. 17. Verso: Notes on experiments with worms ability to detect light via candles or lanterns. LINSOC-DWC.2.12. (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.
[12]
[text excised] rings, each furnished with small minute bristles. The muscular
[text excised] is much developed powerful, as will presently be shown & we shall hereafter have evidence of
[text excised] wer. Worms can crawl backwards as well as forwards, &
[text excised]d of their affixed tails to can retreat with extraordinary rapidity into their burrows. with which they retire into them [text excised] has been noticed mentioned. The mouth is situated [text excised] the anterior end of the body; it is destitute of jaws, [text excised] is provided with a little projection of lobe or lip (as it has [text excised]ariously called) which is used for prehension of food. [text excised] Beneath the mouth there is a strong pharynx shown in the accompanying diagram. (Fig I) [text excised] to be pushed forwards when the animal eats, & which, according to Perrier, [text excised] believes the corresponds as Perrier believes with the protrudable trunk or proboscis of other Annelids. The pharynx leads into the
[text excised]
or the common earth-worm is enlarged into [text excised]
[12v]
Lantern [3 words illeg] red & on green glass — colour as before — no effect —hardly bright the moonlight—
Single not bright candle — but ocassion, peculiar [words illeg] into burrows— Even [words illeg].—
did not [words illeg]any effect much more [illeg].— But effect of by light. Returned from 10 to 15' (? Now there no doubt that [words illeg] for day)—
[paragraph largely illeg]
Bulls-eye [words illeg] dashed into their burrows, & only occassionally were not affected [words illeg]
It is clear [words illeg] of light in [words illeg]—
Ant. extremity of body. Hoffmeister, [words illeg].— But why [text excised] [words illeg].—
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 14 March, 2026