RECORD: Darwin, C. R. & Francis Darwin. n.d. Abstract of Haberlandt, Die Schutzeinrichtungen. CUL-DAR209.6.196. 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 volume CUL-DAR209.6 contains materials for Darwin's book Movement in plants (1880).

Haberlandt, G. 1877. Die Schutzeinrichtungen in der Entwickelung der Keimpflanze. Vienna: Carl Gerold's Sohn.

[196]

* (a) p137

Haberlandt states (Die Schutzeinrichtungen &c p 73) that when seeds of Helianthus annuus are sown in very loose soil or saw-dust, the hypocotyl comes up straight, but afterwards becomes bent owing to the weight of the cotyledons. Whether it straightens itself beneath the soil surface from the little resistance of offered by such soil or sawdust we do not know; but when seeds were sown in moderately compact earth, the hypocotyl was arched when it broke through the ground, as we often saw.

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

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