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To Louis Agassiz   19 August 1868

Summary

Thanks LA for information on sexual differences in the coloration of Amazonian fish. CD was anxious to know how the sexes differed because they are unusual in that the male has the largest share in looking after ova and young.

Author:  Charles Robert Darwin
Addressee:  Jean Louis Rodolphe (Louis) Agassiz
Date:  19 Aug 1868
Classmark:  Houghton Library, Harvard University (MS Am 1419: 278)
Letter no:  DCP-LETT-6323
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Agassiz, Louisdisabled_by_default
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