Asks about significance of trilobites for evolution.
Asks if any organism can be designated as animal in one stage and vegetable in another.
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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.
Asks about significance of trilobites for evolution.
Asks if any organism can be designated as animal in one stage and vegetable in another.
Does not feel that the occurrence of perfect trilobites in the oldest known fossil-bearing rocks is fatal to evolution, as he does not believe these rocks to be contemporaneous with the first appearance of life.
Locomotive spores of some algae are like animals.