From:
Charles Robert Darwin
To:
Osbert Salvin
Date:
10 Sept [1871]
Source of text:
Sybil Rampen (private collection)
Summary:
CD is interested in the gradation of character in the lamellae of the beaks of ducks. He finds that they are less developed or prominent in the common duck and goose than in true ducks. Is OS able to provide him with any information on this subject?
Contributor:
Darwin Correspondence Project