of the wires being in communication with the twelve our regretted master, Professor Charcot, at the Salpe- electro-magnets, and the thirteenth serving as a com- triere. We shall describe further along the annex of mon return wire. the laboratory of photography that has been created The apparatus is… … ing at more distant intervals, sions of current at intervals at one or more minutes apart, regulated in advance. A metallic cylinder is set in although at first sight one action by means of a clock- scarcely feels the necessity of taking photographs at so dis- work movement provided tant intervals.…
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