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Herschel4698

From:
George Biddell Airy
To:
Sir John Herschel
Date:
[20 May 1840]
Source of text:
RS:HS 1.87 (C: RGO 6.463.80)
Summary:

Concerning prism refraction.

Contributor:
John Herschel Project

Herschel382

From:
Sir John Herschel
To:
George Biddell Airy
Date:
[1840-5-20 or later]
Source of text:
RGO 6.463.81
Summary:

A note agreeing with GA about prism interference [see GA's 1840-5-20].

Contributor:
John Herschel Project

DCP-LETT-568A

From:
Charles Robert Darwin
To:
Alexander Young Spearman, 1st baronet
Date:
20 May 1840
Source of text:
The National Archives (TNA) (T1/4524 paper 25824)
Summary:

The fourth number of part one of the Zoology has now been published. The Smith, Elder & Co. account is submitted.

Contributor:
Darwin Correspondence Project
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