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From:
Charles Robert Darwin
To:
Thomas Henry Huxley
Date:
23 Apr [1853]
Source of text:
Imperial College of Science, Technology, and Medicine Archives (Huxley 5: 4)
Summary:

On THH’s paper on cephalous Mollusca [Philos. Trans. R. Soc. Lond. 143 (1853) pt 1: 29–66]. Discovery of the type or "idea" (in THH’s sense, not Owen’s or Agassiz’s) is one of the highest ends of natural history.

Discusses anamorphism;

position of heart in Cleodora.

Variability within species;

cementing process in cirripedes.

Contributor:
Darwin Correspondence Project