RECORD: Darwin, C. R. n.d. [Note on Rudimentary organs]. CUL-DAR205.1.65. Edited by John van Wyhe (Darwin Online, http://darwin-online.org.uk/)
REVISION HISTORY: Transcribed by Christine Chua and edited by John van Wyhe 8.2021. RN1
NOTE: The brown crayon number '10' indicates that this document was filed by Darwin in his portfolio for the subject of Rudimentary & abortive organs.
Reproduced with permission of the Syndics of Cambridge University Library and William Huxley Darwin. The volume CUL-DAR205.1 contains notes on rudimentary organs.
[65]
10
Rudimentary organs 4 methods
(1) Reacquirement of lost organs as dangling forms of Hornless Red
(2) sudden almost loss, as tail in dogs: Monsters.
(3) appearance of organ will not spec as teeth in Turnbulls rabbit
(4) probable gradual loss.
(5) The spreading of an organ already rudimentary as feather Hyacinth— Snow Ball tree
(over)
65v
Mem Plants – compensation (rudimentary wattles & comb) in plants laws of growth, decrease does come into play – Why so permanent.
External agencies & desire do not act in embryo –
Variability of Rudimentary organs may be accounted for by strong principle of inheritance as we see in reversion to parent form will perhaps account for it.
Citation: John van Wyhe, ed. 2002-. The Complete Work of Charles Darwin Online. (http://darwin-online.org.uk/)
File last updated 25 September, 2022