3480079 Hofmann\'s spectroscope, 1895; (add.info.: Hofmann\'s spectroscope, 1895. Dr. J. G. Hofmann; originally of German extraction; established a business in Paris as an optical and philosophical instrument maker. The firm was active between the years 1850-1875 trading at rue de Bucy. Later (1863-1875); the firm was referred to as l\' Institute d\' Optique Paris.); Universal History Archive/UIG; out of copyright.