. Annual report of the Board of Regents of the Smithsonian Institution. Smithsonian Institution; Smithsonian Institution. Archives; Discoveries in science. 822 HISTORY OF CHRONOPHOTOGBAPHY. each to the noxt, and representing the successive attitudes of a sea- gull in flight. No: 6. Phofoijraph'ic (jxin, lS82.—ln the study of the flight of birds the necessity of operating before a dark field or dead-black y)ack-. FlG. S. ground restricts extremelj^ the number of possible experiments. In order to analyze free flight it was requisite to l>e able to operate in case of need on the bright sk}^ an


. Annual report of the Board of Regents of the Smithsonian Institution. Smithsonian Institution; Smithsonian Institution. Archives; Discoveries in science. 822 HISTORY OF CHRONOPHOTOGBAPHY. each to the noxt, and representing the successive attitudes of a sea- gull in flight. No: 6. Phofoijraph'ic (jxin, lS82.—ln the study of the flight of birds the necessity of operating before a dark field or dead-black y)ack-. FlG. S. ground restricts extremelj^ the number of possible experiments. In order to analyze free flight it was requisite to l>e able to operate in case of need on the bright sk}^ and to arrange an apparatus capable of being. 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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