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From:
Edward Blyth
To:
Charles Robert Darwin
Date:
4 Jan 1868
Source of text:
DAR 160: 211
Summary:

Discusses mule canaries which show a tendency to revert to wild plumage colours.

Contributor:
Darwin Correspondence Project
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From:
Henry Hudson
To:
Sir John Herschel
Date:
[4 January 1868]
Source of text:
RS:HS 10.29
Summary:

Makes no claim to originality for his experiments; thinks highly of Dr. W. C. Wells but would like to know whether [Pierre] Prévost's theory is tenable.

Contributor:
John Herschel Project