. Annual report of the Board of Regents of the Smithsonian Institution. Smithsonian Institution; Smithsonian Institution. Archives; Discoveries in science. 326 HISTORY OF CHRONOPHOTOGRAPHY, paper (fig. 15). When the whole was wound up round its spool before being put in, the film was protected from light by outer layers of opaque paper; and when the work was done and the film was wound upon the other spool it was equally protected by the other terminal of opaque paper so that it could be removed from the apparatus in the light without ])ecoming clouded. This apparatus, which was easily used, s
. Annual report of the Board of Regents of the Smithsonian Institution. Smithsonian Institution; Smithsonian Institution. Archives; Discoveries in science. 326 HISTORY OF CHRONOPHOTOGRAPHY, paper (fig. 15). When the whole was wound up round its spool before being put in, the film was protected from light by outer layers of opaque paper; and when the work was done and the film was wound upon the other spool it was equally protected by the other terminal of opaque paper so that it could be removed from the apparatus in the light without ])ecoming clouded. This apparatus, which was easily used, suflSced for three years for the writer's researches into the motions of man and of animals. Like Mu3^bridge, Anschiitz, and Demeny, he aimed to obtain, by Plateau's method, the reproduction of the analyzed motions. At the exhibition of 1889, a zootrope moved b}^ elec- tricity showed animals in motion, as well as men, birds, horses at dift'erent gaits. But since the zootrope does not allow man}' figures to be shown, the writer was restricted to exhibiting short movements. He therefore cast about for methods of showing scenes of long duration. No. 10. ^hotograpJiic pi'ojector, 1893.—This apparatus carries an endless belt of photographs to the focus of an objective which pro- jects them upon a screen. Fig. 16 shows the path of the raj^s in the projector. A pencil of parallel rays, refiected b}^ a heliostat comes. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Smithsonian Institution. Board of Regents; United States National Museum. Report of the U. S. National Museum; Smithsonian Institution. Report of the Secretary. Washington : Smithsonian Institution
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