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Albrecht, R. F. in correspondent 
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From:
R. F. Albrecht
To:
Charles Robert Darwin
Date:
16 Mar 1870
Source of text:
DAR 159: 33
Summary:

Is currently at work on the development in birds of organs of flight according to CD’s principles; asks permission to quote CD in stating the theory.

Urges CD to republish his works in a collected edition, to make them more readily available to Germans.

Contributor:
Darwin Correspondence Project
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From:
Charles Robert Darwin
To:
R. F. Albrecht
Date:
18 Mar 1870
Source of text:
University Archives (dealers) (17 August 2022, lot 526)
Summary:

Thinks the German publisher would not object to publishing quotations from CD’s works, unless it was a whole chapter.

Fears the development of bird wings will prove a very difficult subject.

Contributor:
Darwin Correspondence Project
From:
R. F. Albrecht
To:
Charles Robert Darwin
Date:
13 Oct 1871
Source of text:
DAR 159: 34
Summary:

CD has omitted in all his works one of the most interesting causes of variation, domestic or wild – i.e., frightening of a pregnant animal; quotes case of eight-footed horse from a French translation of G. S. W. von Adler.

Contributor:
Darwin Correspondence Project
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From:
Charles Robert Darwin
To:
R. F. Albrecht
Date:
16 Oct [1871]
Source of text:
Universitätsbibliothek Leipzig, Sondersammlungen (Sammlung Nebauer)
Summary:

Thanks RFA for extracts.

Does not believe resemblances can be produced as RFA suggests, but would not deny that a strong mental shock may cause arrest of embryonic development and thus give rise to monstrosities.

Contributor:
Darwin Correspondence Project