RECORD: Darwin, C. R. n.d. The relations of affinity must be judged from those parts of frame. CUL-DAR205.5.38. Edited by John van Wyhe (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.
[38]
The relations of affinity must be judged from those parts of frame, which form during long succession, have been so often modified but only indirectly from not being directly adapted that we see no practical relation in them to the habits of animal— (for instance general framework composition of skeleton, or blood system vertebrate)— Analogy where such relation is evident — though some of such adaptations may be affinity as feathers in birds = swift & swallow - mouse & shrew striking analogies =
[in margin:] but ma any part long inherited may show affinity.
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 4 March, 2023