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From:
Charles Robert Darwin
To:
James Ballantyne Hannay
Date:
22 June 1881
Source of text:
American Philosophical Society (Mss.B.D25.592)
Summary:

Suggests modification in JBH’s experiment on formation of diamonds.

Speculates about chemical products of constituents of living organisms when subjected to heat and pressure.

Contributor:
Darwin Correspondence Project
From:
Archibald Geikie
To:
Charles Robert Darwin
Date:
22 June 1881
Source of text:
Haslemere Educational Museum (LD-8-892-P443–4)
Summary:

Thanks for CD’s sympathy for James Croll; George Howard Darwin’s signature would have been welcome.

Contributor:
Darwin Correspondence Project
From:
Charles Robert Darwin
To:
Thomas Henry Huxley
Date:
22 June 1881
Source of text:
Imperial College of Science, Technology and Medicine Archives (Huxley 5: 364)
Summary:

Has had letter from Rothenburg asking him to help obtain a grant for Haeckel’s expedition to Ceylon.

Contributor:
Darwin Correspondence Project