then paired together a sequence of twelve different wet-plate photographic prints of the subject in motion. The subject could range from a running horse to a human descending stairs, or inanimate objects being thrown, launched, or falling. To overlap the phases of movement on a single plate, like the work of Marey and Demeny, a photographer would fix a single plate by using strips of celluloid for each separate, irregular image. Marey also later developed a device, shaped in the manner of a gun as its purpose was to photograph short sequences of the natural movement of birds during their flight, which took twelve successive photographs on a set of discs. The disc contained 12 openings around its circumference. In front of this disc was a second disc pierced with a slit. Pressing the trigger of the gun began a mechanism to rotate the discs. The disc carrying the 12 frames rotated 1/12 of a revolution while the disc carrying the shutter slit revolved once, so that each of the 12 openings appeared in turn behind the lens and was exposed through the slit. [3] When printed, it gave the same effect as his layering process. (Eventually, Marey was able to photograph on actual rolls of film and project the frames in sequence.) Depending on the purpose of the chronophotograph, it could later be affixed to any of several devices either to be displayed in motion or to compare phases of motion in layers. Uses Chronophotography's original purpose was to help scientists study objects in motion, primarily humans and animals. It was also used for practical purposes, such as judging timed events and recording historical ones (horse and dog races, performances) and studying the movement of projectiles for war. With Anschutz's development of non-scientific, entertaining chronophotographs, chronophotography became the basis for the invention and development of cinematography. Due to the development of projection devices (Muybridge's zoopraxiscope, Anschutz's electrotachyscope, and ultimately, Albert Londe's high-speed multi-exposure camera which ran film through a projector in a new way), the display of chronophotographs as entertainment became more sophisticated and useful than ever before. Before long, cinematic devices spawned from original chronophotographic predecessors, with which audiences could watch continuous loops of entertaining activities (for example, the “peep show” devices built using Thomas Edison’s backlighting technology). From these developments in history, cinematography and silent film of moving images were invented. Romanian neurologist Gheorghe Marinescu made the