Practical cinematography and its applications (1913)

NATIONAL LABORATORIES 249 Dr. E. J. Marey, was a prodigious worker who pursued his scientific investigations without any idea of personal gain. When first he entered the arena of science he began his experiments in a large room upon the fifth floor of a house in the Rue de 1'ancienne Comedie, Paris, which formerly belonged to the Comedie Frangaise. Here he fitted up as good a laboratory as he could afford, dividing the spacious apartment, by wooden partitions, into working and living rooms. His studies soon aroused widespread attention, and their results were subsequently embodied in his classical work, " The Graphic Method." But some ten years before this volume appeared his investigations had received recognition. In 1867 the Minister of Public Instruction offered him the use of a laboratory at the College of France, so as to be able to carry out his researches to better advantage. During this period he invented numerous instruments — the sphymograph, cardiograph, pneumograph, thermograph, and odograph—with which he made invaluable contributions to scien- tific knowledge. It was Konig's work which attracted Marey to animated photography, as a handmaid of science, the outcome being his greatest discovery, which he named chrono- photography. Marey was much impressed by Jannsen's astronomical revolver with which, in