From:
Adolph Theodor Kupffer
To:
Sir John Herschel
Date:
1840-9-1/13
Source of text:
RS:HS 11.94
Summary:
Sending the fourth volume of the magnetic observations; comments on these.
Contributor:
John Herschel Project
Sending the fourth volume of the magnetic observations; comments on these.
Has forwarded JH's note regarding a review of William Whewell's book to J. G. Lockhart, who will be very pleased to receive such an article.
Concerned with developing photography for tourist use. Doubts that colors of the spectrum can be readily displayed on photographic paper. The'chemistry' of photography is not understood.
Asserting that her memory remains sharp, CH promises that she will periodically describe 'what passed in old times.'