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From:
Albert Duncan Austin
To:
Charles Robert Darwin
Date:
25 July 1878
Source of text:
DAR 159: 129
Summary:

Idea has struck him that might be of use to CD: that rapid changes during growth as in some plants and in insect metamorphosis may bear analogy to the slower changes resulting in the formation of new varieties.

Contributor:
Darwin Correspondence Project
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From:
Darwin, Emma
To:
Darwin, Sara
Date:
[25 July 1878?]
Source of text:
DAR 219.1: 112
Summary:

No summary available.

Contributor:
Darwin Family Letters
From:
Charles Robert Darwin
To:
Francis Darwin
Date:
25 July [1878]
Source of text:
DAR 211: 40
Summary:

Is forwarding the writing machine to Carl Semper.

Is glad FD has taken up his old friends, the twiners.

Hopes to get heliotropic aerial roots from J. D. Hooker. Asks FD to find out whether any moulds or roots are apheliotropic. Is puzzled by heliotropism in subterranean roots.

Contributor:
Darwin Correspondence Project
From:
Franz Ritter von Kobell
To:
Charles Robert Darwin
Date:
25 July 1878
Source of text:
DAR 230: 62
Summary:

CD named corresponding member of the Royal Bavarian Academy of Science. [See 11634.]

Contributor:
Darwin Correspondence Project