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From:
Charles Robert Darwin
To:
Natura Artis Magistra (Artis).
Date:
28 Nov 1868
Source of text:
Stadsarchief Amsterdam (395: 614)
Summary:

Asks whether the spurs in the young of Pavo muticus are developed earlier or later in life than in the young males of Pavo cristatus.

Contributor:
Darwin Correspondence Project