Abstract
M. SEYEWETZ is chiefly known to us by the researches that he has carried out, often in conjunction with M. M. Lumiere. One naturally expects an author to treat more fully of those subjects that he has personally studied. In the present case this is a distinct recommendation, for the author's investigations have been so largely connected with the processes involved in negative making. The summaries of the characters, use, and effects of the various developing agents are especially valuable. It is of interest to notice that M. Seyewetz is not one of those who believe that development is a mechanical process which cannot be varied except to the detriment of the negative. The paper and the quality of the illustrations of this volume show that our neighbours have not recovered so far as we have in this country from the detrimental effects of the War, but these matters do not detract from the sterling character of the volume.
Le Négatif en photographie.
Par A. Seyewetz. Deuxième édition, revue, corrigée et augmentée. (Encyclopédie scientifique: Bibliothèque de Photographie.) Pp. viii + 308. (Paris: Gaston Doin, 1923.) 15.40 francs.
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[Book Reviews]. Nature 111, 531 (1923). https://doi.org/10.1038/111531c0
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DOI: https://doi.org/10.1038/111531c0