1. It is interesting to note that, in addition to the phrase “Our English method”, Talbot also used the phrase, “But in our process”. He was either using an extremely polite form of English to Herschel or else acknowledging Herschel’s direct but unexplained contribution towards the latest version of Talbot’s process.
2. Science Museum Collection, 9 May 1839.
3. Burnett Brown Col1ection, Lacock Abbey.
4. James, Dr. T. H., personal communication to E. Ostroff, 18 April 1978.
5. Herschel, Sir John F. W. “On the Chemical Action of the Rays of the Solar Spectrum on Preparations of Silver and other Substances, both metal1ic and non-metallic, and onsome Photographic Processes”,Philos. Trans. R. Soc. Land.130, 6 (1840).