The history of the drama, in the usual accounts given of it, is traced back to Thespis, Susarion, and others, in Greece, about six centuries before Christ. But this has reference only to the most detached and consummate form of the art. In order really to understand its derivative basis, its ingredients, its numerous applications and the moral rank and value of its several uses, we must go much farther back, and study its gradual ascent. We must, indeed, not only go beyond the polished states of civilization, but even beyond the first appearance of man himself on the scene of this world. For the rudiments of the dramatic art, the simple germs afterwards combined and developed in human nature with higher additions, are manifested in the lower animals. The naked foundations, the raw materials, of the art of acting are shown in all gregarious creatures, and portions of them even in solitary creatures. They are the crude instincts of intelligence, imagination, and sympathy. Creatures who are made alike have the same inner states of consciousness when they are under the same outer conditions. They also reveal these inner states by the same outer signs, namely, attitudes, movements, colors, cries, nervous relaxations or contractions. Seeing in another creature the signals of a certain state which has always in their own experience been the accompaniment and cause of these same signals, they interpret the signals accordingly, and enter into the same state themselves by sympathy, the signals by a reversal of impulse reacting to cause the state which they primarily denoted. Thus panics spread through a swarm of birds, an army of wild horses, or a flock of sheep. Thus the leader of a herd of buffaloes coming on the track of hunters or in sight of a grizzly bear is terrified by the danger and starts off on a run in another direction. The stiffened tail, erected ears, glaring eyes, expanded nostrils, impetuous plunge, communicate the instinctive intelligence and feeling through these signs from the nearest members of the herd to those farther off, with extreme rapidity, and soon the entire multitude is in one sympathetic state of alarm and flight. The perception of danger by the leader awakened the feeling of fear and led to the movement of escape. Those who had not these states of themselves caught their signs and assumed their substance from the one who had. Thus all are reinforced and saved by one.