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Herschel, John in correspondent 
Mädler, Johann Heinrich in correspondent 
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From:
Sir John Herschel
To:
Johann Heinrich Mädler
Date:
[1842-4]
Source of text:
RS:HS 12.273 & 22.144
Summary:

Is gratified that JM is taking an interest in double stars. Comments on some of the observations and time of their orbits.

Contributor:
John Herschel Project
From:
Johann Heinrich Mädler
To:
Sir John Herschel
Date:
[8 April 1842]
Source of text:
RS:HS 12.272
Summary:

Observations on double stars.

Contributor:
John Herschel Project
From:
Johann Heinrich Mädler
To:
Sir John Herschel
Date:
[28 July 1844]
Source of text:
RS:HS 12.274
Summary:

JM is traveling in Germany for some time and intends to end up at a scientific conference in Bremen. He encourages JH to try to attend that conference so they may become acquainted.

Contributor:
John Herschel Project
From:
Johann Heinrich Mädler
To:
Sir John Herschel
Date:
[29 September 1845]
Source of text:
RS:HS 12.275
Summary:

About a number of astronomical matters, including double stars. Provides observations and calculations for Gamma Virginis. Also comments on lunar models.

Contributor:
John Herschel Project