“The Arab smiled scornfully, in token of disbelief.
“‘Here,’ I said, ‘lift up this chest.’
“The Arab stooped, lifted the chest, and said disdainfully, ‘Is that all?’
“‘Wait a bit,’ I replied. Then, with the solemnity appropriate to my assumed character, I made a gesture of command, and gravely said—
“‘You are weaker than a woman. Try now to lift that box.’
“The strong man, perfectly indifferent about my magic spell, again catches hold of the box by the handle, and gives a vigorous pull to lift it; this time, however, the chest resists, and in spite of the most determined efforts, remains absolutely immoveable.
“The Arab wastes in vain over the unlucky chest an amount of force which would have lifted an enormous weight; till at last, exhausted, panting, and burning with shame, he ceases, looks dumfounded, and begins to appreciate the power of the magic art. He has half a mind to give up the attempt; but to give up would be to acknowledge himself conquered, and to admit his weakness; and after having been famed for his muscular strength, to sink to the level of a child. The bare idea makes him furious. Gathering new strength from the encouragement which his friends offer him by word and look, he casts towards them a glance which seems to say, ‘You shall see what the son of the desert can do.’ Once more he bends over the chest, his nervous hands grip the handle, and his legs, planted one on each side of the chest like two columns of bronze, serve as a fulcrum for the mighty effort which he is about to make. It seems almost impossible but that under such a strain the box must fly to pieces. Strange! this Hercules, a moment ago so strong and self-confident, now bends his head; his arms, riveted to the box, are drawn by a violent muscular contraction against his chest; his legs quiver, and he falls on his knees with a cry of agony.
“An electric shock, produced by an induction coil, had just been communicated, at a signal from me, from behind the scenes to the handle of the chest. Thence the contortions of the unlucky Arab. To prolong his agony would have been inhuman. I gave a second signal, and the electric current was cut off. My athletic friend, released from his terrible bondage, raised his hands above his head. ‘Allah! Allah!’ he cried, shaking with fright, then wrapping himself hastily in the folds of his burnous, as though to hide his disgrace, he rushed through the spectators, and made his way to the door of the hall.”
To describe completely the “induction coil,” above referred to, would be beyond the scope of the present treatise. It may, however, be summarily described as consisting of a coil of insulated copper wire, wound round a small bundle of straight iron wires, say five or six inches in length, and an inch in diameter. This is called the “primary” coil. Round this is again wound a quantity of much finer wire, also insulated. This constitutes the “secondary” coil. The ends of each coil are kept free. If a current of electricity be made to circulate through the wire of the primary coil, an independent current of great intensity is found to be thereby produced, by a mysterious process called induction, in the secondary coil. This current is strongest at the moment of first completing the circuit in the primary wire, and if a person is grasping the ends of the secondary wire, or any conducting substance in connection with it, at the moment when the circuit is completed, he will receive a very severe shock. A contrivance is attached to the coil, whereby the circuit is made and broken alternately with great rapidity, thereby producing a continuous shock, of such power that the victim loses for the time being the faculty of relaxing his muscles, and is compelled, after the manner of the unfortunate Arab, to grip, tighter and tighter, the cause of his pain, until released by the final severing of the circuit. Any reader who desires a more complete acquaintance with the induction coil, should purchase a little shilling manual, entitled, “Intensity Coils, How Made and How Used,” by “Dyer” (Suter, Alexander, and Co., Cheapside), where he will find an excellent account of this interesting subject.