MS of a paper called "Comments on Mr Darwin’s grand theory", which generally supports CD but proposes that present flightless birds are primitive. Paper supplemented by a diagram showing the phylogeny of birds.
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The Charles Darwin Collection
The Darwin Correspondence Project is publishing letters written by and to the naturalist Charles Darwin (1809–1882). Complete transcripts of letters are being made available through the Project’s website (www.darwinproject.ac.uk) after publication in the ongoing print edition of The Correspondence of Charles Darwin (Cambridge University Press 1985–). Metadata and summaries of all known letters (c. 15,000) appear in Ɛpsilon, and the full texts of available letters can also be searched, with links to the full texts.
MS of a paper called "Comments on Mr Darwin’s grand theory", which generally supports CD but proposes that present flightless birds are primitive. Paper supplemented by a diagram showing the phylogeny of birds.
Examples of animals that dwell in dark places, some of which are blind, some not. Asks: where causes are the same, why is not the effect? Does not think disuse is the answer, but arrested development.
Comments also on the absence of a ligament in four mammals and asks how natural selection accounts for this.