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DCP-LETT-5891

From:
Charles Robert Darwin
To:
George Gabriel Stokes, 1st baronet
Date:
18 Feb [1868]
Source of text:
CUL (Add 7656: D73)
Summary:

Wants to know how the colour of the eye of the peacock’s tail is produced, whether it depends upon colouring matter in the feathers or reflection, and whether any varying structural change will account for the series of colours surrounding it.

Contributor:
Darwin Correspondence Project
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DCP-LETT-5892

From:
John Blackwall
To:
Charles Robert Darwin
Date:
18 Feb 1868
Source of text:
DAR 86: A2–3
Summary:

Proportion of sexes in spiders; coloration.

Contributor:
Darwin Correspondence Project
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DCP-LETT-5893

From:
Henry Walter Bates
To:
Charles Robert Darwin
Date:
18 Feb 1868
Source of text:
DAR 86: A4–5
Summary:

Has put question of proportion of sexes in insects to the Entomological Society. Quotes H. T. Stainton and F. Smith. Cites some cases mentioned by other members.

Is reading Variation; does not quite understand Pangenesis.

Contributor:
Darwin Correspondence Project
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DCP-LETT-5894

From:
Johann Xaver Robert (Robert) Caspary
To:
Charles Robert Darwin
Date:
18 Feb 1868
Source of text:
DAR 76: B173–4
Summary:

Discusses the flowers of, and cross- and self-fertilisation in, certain aquatic plants. Gives cases of dichogamy and perfect self-fertility.

Contributor:
Darwin Correspondence Project
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