Search: Herschel, John in addressee 
1860-1869::1868::04::30 in date 
letter in document-type 
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From:
Clements R. Markham and Richard Henry Major
To:
Sir John Herschel
Date:
[1868-4-30 or earlie
Source of text:
TxU:H/L-0232.2; Reel 1054
Summary:

[Printed notice] Invitation to meetings of 'Royal Geographical Society.'

Contributor:
John Herschel Project
From:
Joseph Alfred Hardcastle
To:
Sir John Herschel
Date:
30 April [1868]
Source of text:
TxU:H/M-0243; Reel 1087
Summary:

Thanks for JH's notes on metric system. Will study these before Parliamentary debate on 13 May. Calculates that 63 percent of exports go to British possessions, while only 18 percent go to Continent. Sees this as argument against introducing metric system.

Contributor:
John Herschel Project
From:
Augustus De Morgan
To:
Sir John Herschel
Date:
[30 April 1868]
Source of text:
RS:HS 6.402
Summary:

JH's account of his own health is much better than he hoped for. Has he seen AD's contribution to English?

Contributor:
John Herschel Project
From:
Hubert Airy
To:
Sir John Herschel
Date:
[30 April 1868]
Source of text:
RS:HS 19.307
Summary:

Observations on various forms of [hemianopsia], which afflicts HA, his father [G. B. Airy], and JH. Detailed description of recent attack. Seven sketches with captions.

Contributor:
John Herschel Project