Search: Herschel, John in correspondent 
Huggins, William in correspondent 
1860-1869::1869::09 in date 
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Herschel10691

From:
Sir John Herschel
To:
Sir William Huggins
Date:
[20 September 1869]
Source of text:
RS:HS 10.54 & 24.280
Summary:

Suggests the planet Mercury may be a good subject for his spectroscopic experiments. Gives comments and explanations on his proposals. May like to communicate the results to the R.A.S.

Contributor:
John Herschel Project

Herschel10692

From:
Sir John Herschel
To:
Sir William Huggins
Date:
[21 September 1869]
Source of text:
RS:HS 24.281
Summary:

Note to correct calculations in an earlier letter [see JH's 1869-9-20].

Contributor:
John Herschel Project

Herschel10694

From:
Sir John Herschel
To:
Sir William Huggins
Date:
[22 September 1869]
Source of text:
RS:HS 10.56 & 24.282
Summary:

Burn his [last] letter as he made a blunder in his geometry. Cannot imagine how he made the blunder. Gives new formulae for observing Mercury.

Contributor:
John Herschel Project

Herschel10693

From:
Sir William Huggins
To:
Sir John Herschel
Date:
[22 September 1869]
Source of text:
RS:HS 10.55
Summary:

Unable to make any observations at the moment as his observatory is being enlarged to receive his new large telescope. Thinks it would be a good idea to carry out observations on Mercury. Is not sorry to be able to rest his eyes from his trying spectrum experiments.

Contributor:
John Herschel Project

Herschel10695

From:
Sir William Huggins
To:
Sir John Herschel
Date:
[27 September 1869]
Source of text:
RS:HS 10.57
Summary:

Is much obliged for the more correct determination of Mercury. As soon as he gets his new apparatus he will try to obtain observations of the planet.

Contributor:
John Herschel Project
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