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From:
Sir John Herschel
To:
Margaret Brodie Herschel
Date:
[31 August 1851]
Source of text:
JHS 6.22
Summary:

Most of the letter is taken up in replying to MH's letters; JH talks about Charles Wheatstone's idea of 'binocular Daguerreotypes,' and about a chart of all balloon ascents, prepared in Paris, and brought to JH by a friend coming from there.

Contributor:
John Herschel Project