The earliest form of exhibiting apparatus, known as the Kinetoscope, was a machine in which a positive print from the negative obtained in the camera was exhibited directly to the eye through a peep-hole; but in 1895 the films were applied to modified forms of magic lanterns, by which the images are projected upon a screen. Since that date the industry has developed very rapidly, and at the present time (1910) all of the principal American manufacturers of motion pictures are paying a royalty to Edison under his basic patents.

From the early days of pictures representing simple movements, such as a man sneezing, or a skirt-dance, there has been a gradual evolution, until now the pictures represent not only actual events in all their palpitating instantaneity, but highly developed dramas and scenarios enacted in large, well-equipped glass studios, and the result of infinite pains and expense of production. These pictures are exhibited in upward of eight thousand places of amusement in the United States, and are witnessed by millions of people each year. They constitute a cheap, clean form of amusement for many persons who cannot spare the money to go to the ordinary theatres, or they may be exhibited in towns that are too small to support a theatre. More than this, they offer to the poor man an effective substitute for the saloon. Probably no invention ever made has afforded more pleasure and entertainment than the motion picture.

Aside from the development of the motion picture as a spectacle, there has gone on an evolution in its use for educational purposes of wide range, which must not be overlooked. In fact, this form of utilization has been carried further in Europe than in this country as a means of demonstration in the arts and sciences. One may study animal life, watch a surgical operation, follow the movement of machinery, take lessons in facial expression or in calisthenics. It seems a pity that in motion pictures should at last have been found the only competition that the ancient marionettes cannot withstand. But aside from the disappearance of those entertaining puppets, all else is gain in the creation of this new art.

The work at the Edison laboratory in the development of the motion picture was as usual intense and concentrated, and, as might be expected, many of the early experiments were quite primitive in their character until command had been secured of relatively perfect apparatus. The subjects registered jerkily by the films were crude and amusing, such as of Fred Ott's sneeze, Carmencita dancing, Italians and their performing bears, fencing, trapeze stunts, horsemanship, blacksmithing—just simple movements without any attempt to portray the silent drama. One curious incident of this early study occurred when "Jim" Corbett was asked to box a few rounds in front of the camera, with a "dark un" to be selected locally. This was agreed to, and a celebrated bruiser was brought over from Newark. When this "sparring partner" came to face Corbett in the imitation ring he was so paralyzed with terror he could hardly move. It was just after Corbett had won one of his big battles as a prize-fighter, and the dismay of his opponent was excusable. The "boys" at the laboratory still laugh consumedly when they tell about it.

The first motion-picture studio was dubbed by the staff the "Black Maria." It was an unpretentious oblong wooden structure erected in the laboratory yard, and had a movable roof in the central part. This roof could be raised or lowered at will. The building was covered with black roofing paper, and was also painted black inside. There was no scenery to render gay this lugubrious environment, but the black interior served as the common background for the performers, throwing all their actions into high relief. The whole structure was set on a pivot so that it could be swung around with the sun; and the movable roof was opened so that the accentuating sunlight could stream in upon the actor whose gesticulations were being caught by the camera. These beginnings and crudities are very remote from the elaborate and expensive paraphernalia and machinery with which the art is furnished to-day.

At the present time the studios in which motion pictures are taken are expensive and pretentious affairs. An immense building of glass, with all the properties and stage-settings of a regular theatre, is required. The Bronx Park studio of the Edison company cost at least one hundred thousand dollars, while the well-known house of Pathe Freres in France—one of Edison's licensees—makes use of no fewer than seven of these glass theatres. All of the larger producers of pictures in this country and abroad employ regular stock companies of actors, men and women selected especially for their skill in pantomime, although, as most observers have perhaps suspected, in the actual taking of the pictures the performers are required to carry on an animated and prepared dialogue with the same spirit and animation as on the regular stage. Before setting out on the preparation of a picture, the book is first written—known in the business as a scenario—giving a complete statement as to the scenery, drops and background, and the sequence of events, divided into scenes as in an ordinary play. These are placed in the hands of a "producer," corresponding to a stage-director, generally an actor or theatrical man of experience, with a highly developed dramatic instinct. The various actors are selected, parts are assigned, and the scene-painters are set to work on the production of the desired scenery. Before the photographing of a scene, a long series of rehearsals takes place, the incidents being gone over and over again until the actors are "letter perfect." So persistent are the producers in the matter of rehearsals and the refining and elaboration of details, that frequently a picture that may be actually photographed and reproduced in fifteen minutes, may require two or three weeks for its production. After the rehearsal of a scene has advanced sufficiently to suit the critical requirements of the producer, the camera man is in requisition, and he is consulted as to lighting so as to produce the required photographic effect. Preferably, of course, sunlight is used whenever possible, hence the glass studios; but on dark days, and when night-work is necessary, artificial light of enormous candle-power is used, either mercury arcs or ordinary arc lights of great size and number.

Under all conditions the light is properly screened and diffused to suit the critical eye of the camera man. All being in readiness, the actual picture is taken, the actors going through their rehearsed parts, the producer standing out of the range of the camera, and with a megaphone to his lips yelling out his instructions, imprecations, and approval, and the camera man grinding at the crank of the camera and securing the pictures at the rate of twenty or more per second, making a faithful and permanent record of every movement and every change of facial expression. At the end of the scene the negative is developed in the ordinary way, and is then ready for use in the printing of the positives for sale. When a further scene in the play takes place in the same setting, and without regard to its position in the plot, it is taken up, rehearsed, and photographed in the same way, and afterward all the scenes are cemented together in the proper sequence, and form the complete negative. Frequently, therefore, in the production of a motion-picture play, the first and the last scene may be taken successively, the only thing necessary being, of course, that after all is done the various scenes should be arranged in their proper order. The frames, having served their purpose, now go back to the scene-painter for further use. All pictures are not taken in studios, because when light and weather permit and proper surroundings can be secured outside, scenes can best be obtained with natural scenery—city streets, woods, and fields. The great drawback to the taking of pictures out-of-doors, however, is the inevitable crowd, attracted by the novelty of the proceedings, which makes the camera man's life a torment by getting into the field of his instrument. The crowds are patient, however, and in one Edison picture involving the blowing up of a bridge by the villain of the piece and the substitution of a pontoon bridge by a company of engineers just in time to allow the heroine to pass over in her automobile, more than a thousand people stood around for almost an entire day waiting for the tedious rehearsals to end and the actual performance to begin. Frequently large bodies of men are used in pictures, such as troops of soldiers, and it is an open secret that for weeks during the Boer War regularly equipped British and Boer armies confronted each other on the peaceful hills of Orange, New Jersey, ready to enact before the camera the stirring events told by the cable from the seat of hostilities. These conflicts were essentially harmless, except in one case during the battle of Spion Kopje, when "General Cronje," in his efforts to fire a wooden cannon, inadvertently dropped his fuse into a large glass bottle containing gunpowder. The effect was certainly most dramatic, and created great enthusiasm among the many audiences which viewed the completed production; but the unfortunate general, who is still an employee, was taken to the hospital, and even now, twelve years afterward, he says with a grin that whenever he has a moment of leisure he takes the time to pick a few pieces of glass from his person!

Edison's great contribution to the regular stage was the incandescent electric lamp, which enabled the production of scenic effects never before even dreamed of, but which we accept now with so much complacency. Yet with the motion picture, effects are secured that could not be reproduced to the slightest extent on the real stage. The villain, overcome by a remorseful conscience, sees on the wall of the room the very crime which he committed, with HIMSELF as the principal actor; one of the easy effects of double exposure. The substantial and ofttimes corpulent ghost or spirit of the real stage has been succeeded by an intangible wraith, as transparent and unsubstantial as may be demanded in the best book of fairy tales—more double exposure. A man emerges from the water with a splash, ascends feet foremost ten yards or more, makes a graceful curve and lands on a spring-board, runs down it to the bank, and his clothes fly gently up from the ground and enclose his person—all unthinkable in real life, but readily possible by running the motion-picture film backward! The fairy prince commands the princess to appear, consigns the bad brothers to instant annihilation, turns the witch into a cat, confers life on inanimate things; and many more startling and apparently incomprehensible effects are carried out with actual reality, by stop-work photography. In one case, when the command for the heroine to come forth is given, the camera is stopped, the young woman walks to the desired spot, and the camera is again started; the effect to the eye—not knowing of this little by-play—is as if she had instantly appeared from space. The other effects are perhaps obvious, and the field and opportunities are absolutely unlimited. Other curious effects are secured by taking the pictures at a different speed from that at which they are exhibited. If, for example, a scene occupying thirty seconds is reproduced in ten seconds, the movements will be three times as fast, and vice versa. Many scenes familiar to the reader, showing automobiles tearing along the road and rounding corners at an apparently reckless speed, are really pictures of slow and dignified movements reproduced at a high speed.

Brief reference has been made to motion pictures of educational subjects, and in this field there are very great opportunities for development. The study of geography, scenes and incidents in foreign countries, showing the lives and customs and surroundings of other peoples, is obviously more entertaining to the child when actively depicted on the screen than when merely described in words. The lives of great men, the enacting of important historical events, the reproduction of great works of literature, if visually presented to the child must necessarily impress his mind with greater force than if shown by mere words. We predict that the time is not far distant when, in many of our public schools, two or three hours a week will be devoted to this rational and effective form of education.

By applying microphotography to motion pictures an additional field is opened up, one phase of which may be the study of germ life and bacteria, so that our future medical students may become as familiar with the habits and customs of the Anthrax bacillus, for example, as of the domestic cat.