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Tyndall, John in addressee 
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Herschel3257

From:
Sir John Herschel
To:
John Tyndall
Date:
[7 June 1870]
Source of text:
RS:HS 24.317 (C: RI 571)
Summary:

Thanks for work on diamagnetism and magne-crystallic action [Researches on Diamagnetism (1870)], which JH is excited to read. Mentions long-abandoned plans for magnetization experiments. Envies those who can see JT's 'magic' experiments at Royal Institution.

Contributor:
John Herschel Project

DCP-LETT-7319

From:
Charles Robert Darwin
To:
John Tyndall
Date:
8 Sept 1870
Source of text:
The Michael Faraday Museum at the Royal Institution of Great Britain, London, reference RI MS JT/2/10/458, spine title: Journal V111A 1858–71
Summary:

CD finds JT’s discourse "grand and most interesting" [On the scientific use of the imagination (1870)]. Flattered by what JT says about him.

He is "a rash man to say a good word for Pangenesis for it has hardly a friend among naturalists".

CD is much struck with what JT says about "pondering" and delighted by his "as if" argument.

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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