Paris: Gauthier-Villars, 1864. First edition. 8vo., vi, 152 pp. Contemporary quarter calf gilt and marbled paper over boards. Light scattered foxing to the text. Tips and edges slightly rubbed. A very good copy. Item #53196
The premiere research on the conservation of the photographic print.
Eder, HISTORY OF PHOTOGRAPHY p. 538, "The way chemical processes combined in fixing and toning silver prints with gold and hypo was shown in the intensive investigations of Alphones Davanne and Jules Girard in their RECHERCHES THÉORIQUES ET PRATIQUES SUR LA FORMATION DES ÉPREUVES PHOTOGRAPHIQUES POSITIVES, Paris, 1864." Roosens and Salu No. 8902.