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From:
Henry Denny
To:
Charles Robert Darwin
Date:
30 Oct 1844
Source of text:
DAR 205.3: 273
Summary:

Has never heard of species of same genus [of parasites] being found on both birds and mammals, or different genera and species being found on animals in the domestic and wild states. Implications of this for relationship of aperea and guinea-pig.

Contributor:
Darwin Correspondence Project
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