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1870-1879 in date 
Erman, Georg Adolph in correspondent 
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From:
Georg Adolph Erman
To:
Sir John Herschel
Date:
[28 April 1870]
Source of text:
RS:HS 7.104
Summary:

Sends two of his publications, one on terrestrial magnetism at Berlin. Comments on the results, and wonders if JH would enlist the help of the B.A.A.S. to finance further studies by H. J. R. Petersen.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Georg Adolph Erman
Date:
[24 May 1870]
Source of text:
RS:HS 24.315
Summary:

About an application to the B.A.A.S. for a grant to fund the calculations related to reducing the magnetic observations of 1847-48.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Georg Adolph Erman
Date:
[7 October 1870]
Source of text:
RS:HS 24.332
Summary:

Writes to clarify the actions of the B.A.A.S. [see JH's 1870-5-24].

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Georg Adolph Erman
Date:
[12 October 1870]
Source of text:
RS:HS 25.7.7
Summary:

Corrects a misunderstanding about the date to which magnetic observations are to be reduced.

Contributor:
John Herschel Project
From:
Georg Adolph Erman
To:
Sir John Herschel
Date:
[20 October 1870]
Source of text:
RS:HS 7.105
Summary:

Did not receive JH's letters as he was away from the University. Rejoices at his news of the B.A.A.S. grant.

Contributor:
John Herschel Project
From:
Georg Adolph Erman
To:
Sir John Herschel
Date:
[20 December 1870]
Source of text:
RS:HS 7.106
Summary:

Sends an article from the Astronomische Nachrichten acknowledging the assistance of the B.A.A.S. to two Prussian scientists.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Georg Adolph Erman
Date:
[22 January 1871]
Source of text:
RS:HS 7.107
Summary:

Has sent a note to Nature stating the details of the grant paid by the B.A.A.S. to H. J. R. Petersen for magnetic observations.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Georg Adolph Erman
Date:
[26 January 1871]
Source of text:
RS:HS 24.349
Summary:

Note to accompany a translation of one of GE's writings; also comments on the 'reform' of the German language.

Contributor:
John Herschel Project
From:
Georg Adolph Erman
To:
Sir John Herschel
Date:
[2 March 1871]
Source of text:
RS:HS 7.108-9
Summary:

Outlines the recent work in terrestrial magnetism by H. T. R. Petersen and himself. Comments on their results.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Georg Adolph Erman
Date:
[25 March 1871]
Source of text:
RS:HS 7.110 (C: RS:HS 24.360)
Summary:

No doubt he has received some of the money granted by the B.A.A.S. Has sent it all to GE as he did not know the address of H. J. R. Petersen. Unable to follow GE's scientific arguments. Require simplification.

Contributor:
John Herschel Project
From:
Georg Adolph Erman
To:
Sir John Herschel
Date:
[27 March 1871]
Source of text:
RS:HS 7.111
Summary:

Thanks JH for assistance in settling matters with the B.A.A.S.; comments about travel plans and magnetic observations.

Contributor:
John Herschel Project
From:
Georg Adolph Erman
To:
Sir John Herschel
Date:
[31 March 1871]
Source of text:
RS:HS 7.112
Summary:

Regrets that his bad handwriting caused JH to misread some of his remarks. Will try to produce a clearer exposition of his results. Comments on his expositions.

Contributor:
John Herschel Project