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Description: | [Letter] 1851 Sept 11, Harley St [to] Sir David [Brewster] / J. F.W. Herschel. [4p. on 1 leaf, holograph signed. Asks Brewster to provide a note (for publication) explaining "in what respect Ross and Thomson's novelty of process consists". Herschel does not understand Brewster's previous comment on this process, which produces positives using albumen and glass; refers also to Ross and Thomson's calotypes] | License: | http://creativecommons.org/licenses/by-nc-sa/2.5/ | Subjects: | Letter | Temporal: | 1851 | Source: | Science Museum | Creator: | Herschel, Sir John Frederick William | Identifier: | 1992-246 | Go to resource |
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