sitive copies can be made from the gen. The experiment was carried out by placing the original negative. The film may be so long that the speech. Of these methods, perhaps the most generally peroxide in a closed vessel provided with a pressure known is that employed by Mr. Edison, in which a speech… … as in the cinematograph and similar chronophoto- formula. The hydrate of the peroxide of sodium dis- graphic machines. The reel is driven by a small elec- solves in water with a great lowering of temperature; Fig. 2.—THE RECEIVES. tric motor through the medium of a belt and pulley. in concentrated…
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