The Complete Work of Charles Darwin Online

RECORD: Darwin, C. R. 1877.12.21. Pfeffer in letter to [Frank]. CUL-DAR86.B27. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)

REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 3.2022. 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-DAR80-86 contain material for Darwin's book Descent of man (1871).

[B27]

Dec. 21 77 Pfeffer in letter to F. & in essays on [illeg] urges that it is not protoplasm that aggregates, but contents of the cell-sap - very difficult to believe that all these movements are not physico-mechanical, such as viscid fluids exhibit when coalescing - says aggregation goes on in dead Drosera killed by poison - How cd he know dead - Crushed cells - I imagine like leucophytes in blood if they were to aggregate Says the final sphere of Matter is the attainment of equilibrium - good

[in margin:] Aggregation

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