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Heckel, Édouard in correspondent 
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From:
Édouard Marie (Édouard) Heckel
To:
Charles Robert Darwin
Date:
23 Sept 1880
Source of text:
DAR 166: 129
Summary:

Supervising French translation of Movement in plants. Why does not CD consider spontaneous movements of flower parts, which EMH sees also as circumnutation?

Contributor:
Darwin Correspondence Project
From:
Francis Darwin
To:
Édouard Marie (Édouard) Heckel
Date:
26 Nov 1880
Source of text:
Aguttes (dealers) An Aristophil sale (17 November 2019, lot 43)
Summary:

Indications on the movement of flowers.

It is not customary to recommend someone for membership of the Royal Society.

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Édouard Marie (Édouard) Heckel
Date:
7 Jan [1881?]
Source of text:
Barbara and Robert Pincus (private collection)
Summary:

Sends photograph.

Contributor:
Darwin Correspondence Project