RECORD: Darwin, C. R. n.d. Abstract of Spencer, Principles of Biology. CUL-DAR205.7.268. (John van Wyhe ed., 2002-. The Complete Work of Charles Darwin Online, http://darwin-online.org.uk/)
REVISION HISTORY: Transcribed and edited by John van Wyhe 5.2025. 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.
268
H. Spencer. Principles of Biology
1867. vol. 2. no 16 & 19 p 437. On trees not fruiting at first, bears on Hybridism.—
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Spencer, Herbert. 1864-1867. The principles of biology. London: Williams and Norgate. vols. 1 & 2 bound together. [signed][ESC Library] CUL-DAR.LIB.599 PDF
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 14 January, 2026