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From:
Sir John Herschel
To:
Dionysius Lardner
Date:
[16 February 1829]
Source of text:
RS:HS 11.111 & 21.39
Summary:

Has some difficulty in producing his article on Light for the Cabinet Cyclopaedia as the publishers of the Encyclopaedia Metropolitana consider it would be harmful to their own publication.

Contributor:
John Herschel Project
From:
Thomas Young
To:
Sir John Herschel
Date:
16 February [1829]
Source of text:
RS:HS 18.348
Summary:

JH's determination of length of equinoctial year will remain for long time. Mrs. Young is delighted to hear of JH's new discovery.

Contributor:
John Herschel Project