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DCP-LETT-6583

From:
Alfred Russel Wallace
To:
Charles Robert Darwin
Date:
30 Jan 1869
Source of text:
DAR 106: B75–6
Summary:

Argues that [general variability] of species, not single variations or sports, is basis for modification and adaptation to new conditions.

Contributor:
Darwin Correspondence Project
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DCP-LETT-6584

From:
David Forbes
To:
Charles Robert Darwin
Date:
30 Jan 1869
Source of text:
DAR 164: 143–143/2
Summary:

DF’s opinion of Gustav Jenzsch’s book [Mikroskopische Flora und Fauna (1868)]. Encloses extract of a letter from Ferdinand Zirkel also mentioning Jenzsch’s work.

Contributor:
Darwin Correspondence Project

Herschel12141

From:
Sir John Herschel
To:
Robert Main
Date:
[30 January 1869]
Source of text:
RS:HS 24.248
Summary:

Thanks RM for his offer [see RM's 1869-1-26]; wishes astronomers would develop an accepted system of indicating the quality of observations.

Contributor:
John Herschel Project
Text Online

WCP1914

From:
Alfred Russel Wallace
To:
Charles Robert Darwin
Date:
30 January 1869
Source of text:
  • Cambridge University Library: DAR 106: B75-76
  • British Library, The: BL Add. 46434 f. 167
  • Wallace Family Collection (private collection)
  • Marchant, J. (Ed.). (1916). In: Alfred Russel Wallace; Letters and Reminiscences. Vol. 1. London & New York: Cassell & Co. [p. 234]
Summary:

No summary available.

Contributor:
Alfred Russel Wallace Correspondence Project
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