Is preparing a lecture on photography and wonders if JH was the inventor of the hyposulfite fixing process.
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The Sir John Herschel Collection
The preparation of the print Calendar of the Correspondence of Sir John Herschel (Michael J. Crowe ed., David R. Dyck and James J. Kevin assoc. eds, Cambridge, England: Cambridge Univ. Press, 1998, viii + 828 pp) which was funded by the National Science Foundation, took ten years. It was accomplished by a team of seventeen professors, visiting scholars, graduate students, advanced undergraduates, and staff working at the University of Notre Dame.
The first online version of Calendar was created in 2009 by Dr Marvin Bolt and Steven Lucy, working at the Webster Institute of the Adler Planetarium, and it is that data that has now been reformatted for incorporation into Ɛpsilon.
Further information about Herschel, his correspondence, and the editorial method is available online here: http://historydb.adlerplanetarium.org/herschel/?p=intro
No texts of Herschel’s letters are currently available through Ɛpsilon.
Is preparing a lecture on photography and wonders if JH was the inventor of the hyposulfite fixing process.
Is grateful for his letter regarding the claim for the discovery of the hyposulfite fixing process.
Regarding the differences between portraits and photographs. Is sending him some magnesium for photographic purposes.
Would like to publish his letter on the hyposulfite fixing process.
Encloses photographs taken of the last eclipse. Draws his attention to certain aspects of the eclipse.
Explaining why the moon's disc is circular.
Outlines his claim as being the inventor of the hyposulfite fixing process.
Thanks for, and comments on, some photographs of the solar corona.