Search: Herschel, John in correspondent 
Draper, John William in correspondent 
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1840-1849::1845 in date 
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Herschel7326

From:
Sir John Herschel
To:
John William Draper
Date:
[15 March 1845]
Source of text:
RS:HS 22.226
Summary:

Comments on writings of JD on the chemistry of plants [letter completed 1845-5-7].

Contributor:
John Herschel Project

Herschel8311

From:
Sir John Herschel
To:
John William Draper
Date:
[7 May 1845]
Source of text:
RS:HS 19.117
Summary:

Critiques JD's paper on plant chemistry, contrasting 'luminous, colorific, calorific, & chemical or photographic' rays. Physics of light. [Letter continues two months later.] JH is done with photography. Has no desire to claim priorities in that field. Entrusts future to JD and others.

Contributor:
John Herschel Project
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