Search: Herschel, John in correspondent 
de La Rue, Warren in correspondent 
1850-1859::1857::09 in date 
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From:
Sir John Herschel
To:
Warren de La Rue
Date:
[25 September 1857]
Source of text:
RS:HS 23.206
Summary:

Thanks for photograph of the moon.

Contributor:
John Herschel Project
From:
Warren de La Rue
To:
Sir John Herschel
Date:
[28 September 1857]
Source of text:
RS:HS 6.140
Summary:

Has not been able to go to Kew Observatory yet. The photoheliograph has to await John Welsh's return from Scotland. A reflector with a diagonal mirror would be suitable for celestial objects. Has now removed to Cranford.

Contributor:
John Herschel Project