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DCP-LETT-6085

From:
Charles Robert Darwin
To:
Johann Friedrich Theodor (Fritz) Müller
Date:
3 Apr [1868]
Source of text:
The British Library (Loan MS 10 no 23)
Summary:

Movement in plants.

Dimorphism.

Would welcome FM’s opinion of Pangenesis.

Contributor:
Darwin Correspondence Project

DCP-LETT-6095

From:
Charles Robert Darwin
To:
Alfred Russel Wallace
Date:
6 Apr [1868]
Source of text:
The British Library (Add MS 46434: 125–9)
Summary:

More on the "terrible problem" of natural selection and sterility. CD’s reasons for disagreeing with ARW. CD analyses and answers ARW in detail in defence of his conclusion that sterility cannot be increased through natural selection.

Contributor:
Darwin Correspondence Project

DCP-LETT-6109

From:
Charles Robert Darwin
To:
Alfred Russel Wallace
Date:
9 Apr [1868]
Source of text:
The British Library (Add MS 46434)
Summary:

Warns ARW of dubious character of list of European alpine genera and species in volcanoes of Hawaii. Problems of geographical distribution in oceanic islands.

Contributor:
Darwin Correspondence Project

DCP-LETT-6121

From:
Charles Robert Darwin
To:
Alfred Russel Wallace
Date:
15 Apr [1868]
Source of text:
The British Library (Add MS 46434: 133–5)
Summary:

Admires ARW’s "Theory of birds’ nests" [J. Travel & Nat. Hist. 1 (1868): 73].

Discusses their respective views on birds’ nests, sexual selection, and protection.

Asks why, if brilliant colours of female butterflies are result of protective mimicry, do not males become equally brilliant? CD believes variation in females alone accounts for it, rather than protection.

Contributor:
Darwin Correspondence Project

DCP-LETT-6146

From:
Charles Robert Darwin
To:
Alfred Russel Wallace
Date:
30 Apr [1868]
Source of text:
The British Library (Add MS 46434: 136–9)
Summary:

More on CD’s objections to ARW’s views on protection and natural selection.

Sexual selection.

Contributor:
Darwin Correspondence Project
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