Printed title and credit on mount, "Disc of Flint Glass. Chance Brothers & Co." Printed by Nicolas Henneman.
Chance Brothers & Co. exhibited several types of optical glass in the 1851 Exhibition of the Works of Industry of All Nations. These were reported upon in Vol. II of the 'Reports of the Juries, on the Subjects in the Thirty Classes into which the Exhibition was Divided,' London 1852. The jurors praised the glass as "pure in colour, good in structure, and exempt from those defects which tend to polarization of light etc" (p. 529). The Chance Brothers were invited to submit the discs of flint to various tests in order to ascertain the uniformity of their density. Having satisfactorily established the quality of the glass, the jury recommended that a Council Medal be awarded to the manufacturers. This was the Jurors' highest award.
Illustrated: "A New Art Photography in the 19th Century" (Collection of the Rijksmuseum, Amsterdam) p. 3189.
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Medium Vintage salt print from collodion negative
Photo Date 1851 Print Date ca. 1851
Dimensions 6.75 x 5.75 in. (171 x 146 mm)
Photo Country United Kingdom (UK)
Photographer Country France
Charles Schwartz Ltd.