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From:
Henry Walter Bates
To:
Alfred Russel Wallace
Date:
[19 & 23 Nov. 1856]
Source of text:
  • Natural History Museum, London: NHM Catkey-418383
  • Marchant, J. (Ed.). (1916). In: Alfred Russel Wallace; Letters and Reminiscences. Vol. 1. London & New York: Cassell & Co. [pp. 64-65]
Summary:

No summary available.

Contributor:
Alfred Russel Wallace Correspondence Project
From:
Charles Robert Darwin
To:
Joseph Dalton Hooker
Date:
23 Nov [1856]
Source of text:
DAR 114: 184
Summary:

CD, attempting to clarify debate, states more of his position. External conditions cause "mere variability". Formation of species due to selection. Relation of an organism to its associates far more important than external conditions.

Contributor:
Darwin Correspondence Project
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From:
John Obadiah Westwood
To:
Charles Robert Darwin
Date:
23 Nov 1856
Source of text:
DAR 205.3: 297
Summary:

The Kentucky cave insects (Adelops) are evidently identical to European species of the same genus, some of which are cave insects, others found in damp, dark places.

Contributor:
Darwin Correspondence Project
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