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From:
Robert Main
To:
Sir John Herschel
Date:
[4 August 1847]
Source of text:
RAS:JH Archive 10/5.18; Reel 9
Summary:

Received JH's Cape Results.

Contributor:
John Herschel Project
From:
Robert Main
To:
Sir John Herschel
Date:
[28 November 1868]
Source of text:
RAS:JH Archive 14/3.17; Reel 11
Summary:

Notes strengths and weakness of heliometer for observing double stars. Calls it 'laborious, troublesome instrument.'

Contributor:
John Herschel Project
From:
William Huggins
To:
Robert Main
Date:
[13 June 1871]
Source of text:
RAS:JH Archive 14/4.2.2; Reel 11
Summary:

Directs RM and Charles Pritchard to examine late JH's manuscript on history of double stars, sent to Radcliffe Observatory.

Contributor:
John Herschel Project
From:
Robert Main
To:
Sir John Herschel
Date:
[12 August 1846]
Source of text:
RGO 6.368.681
Summary:

Acknowledges, in G. B. Airy's absence, receipt of a letter from JH.

Contributor:
John Herschel Project
From:
Robert Main
To:
John Tyndall
Date:
1859, January 18.
Source of text:
MS.RGO 6/408.380, RGO
Summary:

No summary available.

Contributor:
Tyndall Project