RECORD: Darwin, C. R. n.d. When I speak of old important organ not varying. CUL-DAR205.5.48. (Cite as: John van Wyhe ed., 2002-. The Complete Work of Charles Darwin Online, http://darwin-online.org.uk/)

REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 1.2023. 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-DAR205.5 contains notes on the principle of divergence, transitional organs and instincts.

[48]

When I speak of old important organ not varying I must partly admit truth, & say I suspect cause that longest inherited are earliest formed & therefore have become important to all rest of subsequently organisation—

Thus head more important to vertebrates than to mollusca because earlier formed in Embryo.


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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 4 March, 2023