Living pictures; their history, photoproduction and practical working. With a digest of British patents and annotated bibliography (1899)

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DIAGRA3I ILLUSIONS. 29 (Fig. 26) was used, one member of which threw some scene on the screen in the ordinary way, while the other projected a beam of light through pictures on a trans- parent praxinoscope drum. On leaving the pictures this light was reflected from the specially angled central mirrors through a lens on to the screen, where it formed an image of the moving figure superposed on the scenery thrown by the other objective. This apparatus Fio. 26. was called \hQ Projection Praxinoscope, ov Praxinoscope Theatre. In 1889 M. Reynaud patented another form of instru- ment, which permitted the employment of much longer series of pictures. In the previous form the length of the series was limited by the size of the drum. It will be seen by Fig. 27 that the subsequent method permitted a long band to be wound from one reel to another, passing over a skeleton drum on its way. The principle of projection was the same as in the earlier instrument, the permanent scene being thrown by a lantern, L; while another source of light, L', projected a beam through the picture on to the central drum (of the usual