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DCP-LETT-6045

From:
Alfred Russel Wallace
To:
Charles Robert Darwin
Date:
24 Mar [1868]
Source of text:
DAR 106: B61–2, B158–9
Summary:

Returns George Darwin’s criticisms of his notes on sterility and sends further notes in reply. Since there are degrees of sterility between varieties, "is it not probable that natural selection can accumulate these variations?" Varieties that are adapted to new conditions could then survive and form new species without being isolated.

Contributor:
Darwin Correspondence Project
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DCP-LETT-6046

From:
John Jenner Weir
To:
Charles Robert Darwin
Date:
24 Mar 1868
Source of text:
DAR 84.1: 65–8
Summary:

Experiments to test Wallace’s theory that brightly coloured caterpillars are rejected by birds. [See Descent 1: 417.]

Contributor:
Darwin Correspondence Project
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Text Online

WCP1894

From:
Alfred Russel Wallace
To:
Charles Robert Darwin
Date:
24 March [1868]
Source of text:
  • Cambridge University Library: DAR 106: B61-62
  • Cambridge University Library: DAR 106: B158-159
  • British Library, The: BL Add. 46434 ff. 121-122
  • Wallace Family Collection (private collection)
  • Marchant, J. (Ed.). (1916). In: Alfred Russel Wallace; Letters and Reminiscences. Vol. 1. London & New York: Cassell & Co. [pp. 205-206]
Summary:

No summary available.

Contributor:
Alfred Russel Wallace Correspondence Project
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