ANIMATED PICTURES. 187 



moved, there would remain another serious drawback viz., that 

 such pictures must be viewed by reflected light, and hence can not 

 be projected upon a screen in the usual way. 



But there are other methods of obtaining colored pictures which 

 merit, careful consideration from our present point of view.* One 

 of these methods is so clearly applicable in the production of motion 

 views of the second type that I need offer no apology for the brief 

 account of it given below: 



A camera fitted with special apparatus including three care- 

 fully selected color screens is used in taking the negatives. The 

 arrangements are such that three separate images red, blue, and 

 green-yellow of the scene or subject are thrown upon the sensitive 

 (isochromatic) plate. The result is a triple negative, from which a 

 transparency is obtained by the usual procedure. If now this trans- 

 parency be placed in a lantern provided with a triple objective and 

 with color screens similar to those used in taking the pictures, the 

 three colored images of the transparency may be brought into coin- 

 cidence upon the screen. And since the tints of the glasses corre- 

 spond to the three primary color sensations, a picture in natural 

 hues will be thus produced. The process, in its perfected form, is 

 due to Mr. Frederic E. Ives, of Philadelphia, who has in this way 

 been able to reproduce the colors of flowers and of natural scenery 

 with complete success. 



Now, there is no reason to doubt that similar results can be 

 secured by using films instead of glass plates; so that Mr. Ives's 

 ingenious system (or some modification thereof) may probably be 

 adapted for use with mechanism similar to that of the cinematograph. 



We may thus hope to obtain striking and beautiful representa- 

 tions of plant life, in which not only the forms and movements of 

 leaves, stalks, or flowers, but also their glowing colors, will appear 

 upon the canvas. 



The realism of our motion pictures may also be enhanced by 

 imparting to them the quality of relief, as in the stereoscope. We 

 may utilize for this purpose a clever invention known as the lantern 

 stereoscope,f Avhereby stereo views can be shown upon a screen, the 

 pictures being viewed through instruments resembling opera glasses 

 in external appearance. It will be possible in this way to exhibit 

 animated views of every description in distinct stereoscopic relief. 

 Each member of the audience must, of course, be provided with one 

 of the binocular instruments above referred to; and it is almost need- 



* It is too soon, as yet, to express any definite opinion with respect to the new Dansac 

 process and some other heliochromic methods of recent orijiin. 



\ The principle of the polaiization of light is effectively utilized in this very ingenious 

 contrivance. 



