Photographic Studies (7 items bound together)

1) Description of the Bridges-Lee New Patent Photo-Theodolite (London: L. Casella, 1899). 31 p. B&w figures, including fold-outs. Second edition. 2) GOTZ, J. R. (comp.) Tables of Conjugate Foci, and Explanatory Remarks for their Application, for the uses of Photographic Lenses, With Appendix. (London: Dawbarn & Ward, 1895). 16 p. Second edition. 3) FRY, S. Herbert, Paget Lantern Plates: A Manual For Their Use. (Watford: Paget Prize Plate Company, 1895) 31 p. 4) IVES, Frederic E. Isochromatc Photography With Chlorophyl. (Philadelphia: Printed by the Author, 1886) 21 p. 4 pasted-in cards, one in colour. 5) COLSON, R., La Photographie Stéréographique. (Paris: Gauthier-Villars, 1899). 20 p. B&w figures. 6) PICKERING, William H., Methods of Determining the Speed of Photographic Exposers, Principles Involved in the Construction of Photographic Exposers. (Cambridge: John Wilson and Son, 1885). 478-488 p. 2 b&w plates at rear. 7) Ministère du Commerce, de l'Industrie et des Colonies. Exposition Universelle Internationale de 1889. Direction Générale de L'Exploitation. Congrès International de Photographie tenu à Paris du 6 au 17 Août 1889. (Paris, Imprimerie Nationale, 1889). 70 p.