Serial homologies in the Mollusca. Gives instances of repetition of homological parts in Radiata.
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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.
Serial homologies in the Mollusca. Gives instances of repetition of homological parts in Radiata.
Outlines the basic categories of phanerogams.
Places Gymnospermae in the dicotyledons.
Evaluates the variable utility of embryological characters in plant classification.