From:
Sir John Herschel
To:
William Henry Fox Talbot
Date:
[3 May 1840]
Source of text:
Science Museum Talbt 1/25
Summary:
Thanks for excellent pictures WT sent. JH wishes JH had time for further experiments, especially on the 'thermic spectrum.' Praises [Robert] Hunt's results. Recommends experiment to WT.
Contributor:
John Herschel Project