Innumerable tricks are done by means of cans and other vessels containing false bottoms, or several compartments, and every stage where magicians perform contains various trap doors in the floor, mirrors, and other illusions. A modern scheme is to have two rows of blinding lights, before a black background, so that the audience cannot see the machinery. By this contrivance, figures on the stage are made to float in the air, and to do all kinds of apparently impossible things. One familiar performance has a man at a piano rise in air and revolve rapidly, all in full view--apparently--of the audience, and another makes a lady dance in midair, and take gigantic strides at enormous speed. These tricks are done by means of machinery, concealed from view by optical illusions, the lady having an iron belt about her waist which connects with the hidden machinery in the rear. Another familiar trick is the appearance and disappearance of a person into or from a box, basket, coffin, and so on, also in full view of the audience. It will usually be observed that these are placed near to the back curtain, where it is easy for a person to enter or exit through a secret opening, but sometimes it is done through a trapdoor in the floor. Once I had the pleasure of assisting Hermann the Great at "Hermann's Theatre" on Broadway, since burned down. I went to his dressing room before the performance, and he gave me a tiny rabbit which I concealed in my ulster pocket, and at the same time several other confederates were given "props," such as silk hats, in which omelets were afterwards made, and handkerchiefs with red moons in the center, and red handkerchiefs with white moons, which were afterwards used in the performance by Hermann who cut a circle out of the middle of a white handkerchief and one from a red handkerchief, and afterwards produced out of the audience the handkerchiefs aforesaid, much to the wonderment of the audience. The rabbit I held was the counterpart of another which Hermann shot from a pistol on the stage, and which was afterwards found in my pocket, much to my apparent chagrin.