Search: American Philosophical Society in repository 
Tegetmeier, W. B. in addressee 
1860-1869::1868 in date 
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From:
Charles Robert Darwin
To:
William Bernhard Tegetmeier
Date:
8 Sept [1868]
Source of text:
American Philosophical Society (Mss.B.D25.273)
Summary:

Asks about the differences in colour of plumage of adult male, female, and young birds. Suggests pile game as subject.

Asks about relative proportion of sexes in ducks and fowls.

Contributor:
Darwin Correspondence Project