Abstract
ALTHOUGH this volume has not quite reached its pre-war bulk, it has gone a long way towards it, and appears to be now lacking only a little in its former plethora of advertisements. Unfavourable conditions still hold, but the editor has been able to restore the tables, formulæ, and other technical details that photographers have. for so many years been in the habit of consulting in their daily work. The “Epitome of Progress“ is a good summary of the novelties of the past year, and there is, we think for the first time, a “History in Brief of Photographic and Photo mechanical Processes.” The nine pages devoted to this subject will be of special interest to the student, for they give the dates of a very large number of important facts connected with the development of photography, starting from the very beginning. We notice that sensitol red and sensitol green are ascribed to Prof. Pope in 1917. We always thought that these were pinacyanol and pinaverdol, respectively, of German origin some years previously, and that to Prof. Pope was due the credit of preparing them in this country, and also of introducing sensitol violet, which, however, does not appear to be mentioned. The section on “Beginners' Failures in Photography,” by the editor, deserves much appreciation.
The British Journal Photographic Almanac and Photographer's Daily Companion, 1920.
George E.
Brown
Edited By. Pp. 912. (London: Henry Greenwood and Co., Ltd.) Price 1s. 6d. net.
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J., C. The British Journal Photographic Almanac and Photographer's Daily Companion, 1920. Nature 105, 67 (1920). https://doi.org/10.1038/105067a0
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DOI: https://doi.org/10.1038/105067a0