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From:
Charles Robert Darwin
To:
Thomas Henry Huxley
Date:
[before 18 May 1868]
Source of text:
Imperial College of Science, Technology and Medicine Archives (Huxley 5: 373)
Summary:

Questions on marmosets and the vocal organs of Hylobates.

Contributor:
Darwin Correspondence Project
From:
Asa Gray
To:
Charles Robert Darwin
Date:
18 May 1868
Source of text:
DAR 165: 163
Summary:

Has passed on copy of Variation to American Academy [of Arts and Sciences]. The U. S. reprint is not very nicely printed.

Contributor:
Darwin Correspondence Project
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From:
Edward Blyth
To:
Charles Robert Darwin
Date:
18 May 1868
Source of text:
DAR 83: 148, DAR 84.1: 107–8, 111
Summary:

Replies to CD’s queries regarding sexual differences in gibbons’ voices, chameleon behaviour, and the occurrence of spurs in pheasants and peahens. Discusses sexual differences in structure and habit within certain bird species.

Contributor:
Darwin Correspondence Project
From:
John Jenner Weir
To:
Charles Robert Darwin
Date:
18 May 1868
Source of text:
DAR 84.1: 81–2, DAR 86: A37–8
Summary:

Answers CD’s question on whether any female birds regularly sing.

Contributor:
Darwin Correspondence Project
From:
Friedrich Hermann Gustav (Friedrich) Hildebrand
To:
Charles Robert Darwin
Date:
18 May 1868
Source of text:
DAR 166: 208
Summary:

Sends graft-hybrid notice.

Contributor:
Darwin Correspondence Project
From:
Thomas Henry Farrer, 1st baronet and 1st Baron Farrer
To:
Charles Robert Darwin
Date:
18 May 1868
Source of text:
DAR 164: 41
Summary:

Is confirmed about the bending of the fly orchid pollinia. [See "Fertilisation of orchids", Collected papers 2: 141.]

Contributor:
Darwin Correspondence Project
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From:
Charles Robert Darwin
To:
John Jenner Weir
Date:
[before 18 May 1868]
Source of text:
American Philosophical Society (Mss.B.D25.)
Summary:

CD cannot remember whether correspondent believed the wing that Gallus bankiva opens and scrapes before the female, is ornamented. He fears it is not.

Contributor:
Darwin Correspondence Project
From:
George Gabriel Stokes
To:
August Dupre
Date:
18 May 1868
Source of text:
MM/14/154, Royal Society
Summary:

No summary available.

Contributor:
Royal Society