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From:
Charles Robert Darwin
To:
Benjamin Dann Walsh
Date:
21 Sept 1868
Source of text:
Field Museum of Natural History, Chicago (Walsh 14)
Summary:

Thanks BDW for pamphlets [by S. H. Scudder and J. D. Caton].

His information about Cicada is of extraordinary interest. Discusses stridulation organs which certainly sometimes differ in the sexes. CD would be curious to know if "dumb" Cicada can breed.

Contributor:
Darwin Correspondence Project
From:
Edward Blyth
To:
Charles Robert Darwin
Date:
21 Sept 1868
Source of text:
DAR 160: 222
Summary:

Discusses the top-knot turkey and the occasional appearance of the top-knot in a breed of cream-coloured turkeys.

Contributor:
Darwin Correspondence Project
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From:
Robert Main
To:
Sir John Herschel
Date:
[21 September 1868]
Source of text:
RS:HS 12.280
Summary:

Comments on double star observations and some papers on the subject.

Contributor:
John Herschel Project