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DCP-LETT-6595

From:
Charles Robert Darwin
To:
Alexander Agassiz
Date:
[23 Oct 1870?]
Source of text:
DAR 143: 7
Summary:

Suggests time for AA to visit.

Contributor:
Darwin Correspondence Project

Herschel3443

From:
Sir John Herschel
To:
John Tyndall
Date:
[23 October 1870]
Source of text:
RI 459 (draft : RS:HS 17.409a; C: RS:HS 24.336; C: RI 573-4)
Summary:

Thanks for paper on action of rays 'of high refrangibility' on gases and vapors. Attempts to understand reflection of wave motion on particles with diameters 'incomparably smaller' than length of wave.

Contributor:
John Herschel Project
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