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From:
Joseph Dalton Hooker
To:
Charles Robert Darwin
Date:
26 July 1879
Source of text:
DAR 104: 128–30
Summary:

JDH criticises John Ball’s theory of origin of higher plants in Carboniferous highlands, where low carbon dioxide levels permitted survival.

Contributor:
Darwin Correspondence Project
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From:
Samuel Wilks, 1st baronet
To:
Charles Robert Darwin
Date:
26 July 1879
Source of text:
DAR 181: 103
Summary:

Sends an oration he delivered at the Royal College of Physicians in CD’s presence.

Contributor:
Darwin Correspondence Project