In the Guyot-Hooper book it was also noted, “By means of two glasses disposed in this manner you may represent a battle, or sea fight, and numberless other subjects, that everyone will contrive according to his own taste. They may also be made to represent some remarkable or ludicrous action between different persons, and many other amusements that a lively imagination will easily suggest.” Complete details were given for a “magical theatre” in which regular magic shadow plays could be presented. An elaborate lantern with a number of grooves for slides was proposed. The clouds, palaces of the gods and the like were dropped down from above; the caves and infernal places rose from below; and earthly palaces, gardens, characters, etc. came in from either side--all, of course, on glass slides. Projection was provided by a lamp with a dozen flames. As an illustration a play based on the siege of Troy was suggested. Slides included the following: walls of Troy, the Grecian Camp, the background atmosphere, the Grecian and Trojan troops, ships, the wooden horse, palaces and houses, temple of Pallas, fire and smoke for the conflagration, individual characters, etc. Screen directions were given for a complete magic shadow play in five acts. This surely was among the first--if not the first--motion picture scenario. The screen was then about three feet wide. Musschenbroek, in addition to being the first credited with introducing effective, though very artificial, motion into light and shadow entertainment and instruction, was said to be the first man to create the illusion of white light by revolving very rapidly a disk painted with seven colors. That effect must have been as magical to Abbé Nollet as his “moving” pictures. It also indicates that considerable advance was being made in the knowledge of vision and the means to create optical illusions, upon which the principle of the motion picture rests. As many other men in this story, Musschenbroek covered the whole field of science. He studies our old friend, the _camera obscura_, mirrors, prisms, the eye, the microscope in many forms, winds, waterspouts, magnetism, capillary tubes, the size of the earth, sound and pneumatic machines. It is easy to determine from that list of serious studies that Musschenbroek’s moving shadow projection was the purest kind of an avocation. Abbé Nollet who helped to introduce Musschenbroek’s novel movement magic lantern is not credited with any great scientific discovery in any field but he served as a clearing house of scientific knowledge in his day. He traveled widely, to Italy and England as well as to Holland. So far as this tale is concerned, Nollet’s name is of significance, after his part in making known the Musschenbroek device, by the fact that he also popularized a very simple little toy--“The Dazzling or Whirling Top.”