and the other to move it horizontally, the operator by means of a single control secures a steady movement which may be vertical, horizontal, or diagonal, and which enables him to keep a moving object always in the centre of the field. This flexibility especially adapts the camera not only for wild animal photography, but also for studio work, where an erratic follow-up is to be accomplished, and for news reel photography. It was this advantage, combined with another special qualification, the freer use of the telephoto lens—which brings a distant object into the foreground on the screen—which made possible a successful picture of the Man-o'-War race and the Dempsey-Carpentier prize fight. Anthropologists have found the telephoto lens useful in making motion pictures of natives of uncivilized countries without their knowledge. Because of the difficulty of securing the proper lighting in the woods, I had paid particular attention to the shutter so that as perfected the shutter admits thirty per cent. more light than the usual camera shutter. This characteristic also has commended the camera to general use. In out-of-door photography on a dark day as well as in the studio, where the lighting is one of the greatest items of expense, its advantage is obvious. Tom Mix and Douglas Fairbanks are both making extensive use of the camera now and a recent feature directed by Lawrence Trimble was made with it.
I was working on the camera, modelling a little and mounting the elephant group, when the war came on us. That meant a call for every man's energy and
