RECORD: Darwin, C. R. & Francis Darwin. n.d. Abstract of Cohn, On the contractile tissue of plants. Annals and Magazine of Natural History 3s 11 1863: 188-202. CUL-DAR60.1.49. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)
REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 12.2022. RN1
NOTE: See record in the Darwin Online manuscript catalogue, enter its Identifier here. Reproduced with permission of the Syndics of Cambridge University Library and William Huxley Darwin. The volumes CUL-DAR 54-61 contain material for Darwin's book Insectivorous plants (1875).
[49]
Annals and mag of Nat Hist (3rd S) 1863 Vol XI
P. 197
Cohn says [2 words illeg] there is little doubt that in Mimosa the vascular bundles constitute the special tissue adapted for the propagation of external excitation
"So far as observation has extended, it would seem that in Centaurea, Dionæa & Drosera the power of conduction of external impressions is not located in any one tissue, but equally partaken by all, as with the lowest animals that are destitute "of definite nervous & muscular tissue."
so it must be in Dionæa
P. 198
Cohn believes that "to change its normal form as a result of excitation, & to revert to it after a while by its inherent elasticity, are characteristics of the living cell"; and this he believes to holds good as well in the vegetable as in the animal kingdom.—
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
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