. A treatise on artificial limbs with rubber hands and feet ... ve been, insome cases, constructed on principles adapted to the ideas of thewearers, where such seemed good practice. The elasticity of the foot,due to the depth of sponge rubber at the heel and to the long rubbertoe, takes the place of the ankle joint. Artificial arms are made in the same way. India-rubber hands areused instead of the old wooden ones. Sometimes a hand with malle-able wire finger cores is employed. Holes are bored in the wooden A. A. MARKS, ARTIFICIAL LIMBS, NEW YORK CITY. :*67 core of the hand into which the doub
. A treatise on artificial limbs with rubber hands and feet ... ve been, insome cases, constructed on principles adapted to the ideas of thewearers, where such seemed good practice. The elasticity of the foot,due to the depth of sponge rubber at the heel and to the long rubbertoe, takes the place of the ankle joint. Artificial arms are made in the same way. India-rubber hands areused instead of the old wooden ones. Sometimes a hand with malle-able wire finger cores is employed. Holes are bored in the wooden A. A. MARKS, ARTIFICIAL LIMBS, NEW YORK CITY. :*67 core of the hand into which the doubled ends of bundles of wire(Fig. 6, k) are inserted and pinned; h shows the hand thus faradvanced. Tape wrapping is then applied until the fingers reach theproper size, shown in t, when all is ready for the coating of Indiarubber. This hand can have its fingers bent so that it can hold a penor other light instrument. In Fig. 6, /, are shown a knife and brushadapted to be inserted in a socket in the hand. The small projectinghandle is used to insert them No. 1203.—Finishing Legs and Arms.—Details and Partsof Artificial Limb Making. The beneficent results of this work have been mentioned. In theMarks factory is a workman with two wooden legs. He does a fulldays work standing at his bench, and then will often play billiardsall the evening. It is impossible to believe that he depends altogetheron artificial limbs. Tight rope walking, hurdle jumping, and otherapparently impossible feats are performed by wearers of the Markslimbs. As a mechanical process the operation of wooden leg making CI A interesting, and the limits of this article preclude a full?tion. noise of machinery, the humming c: wheels, the buzzing ofind the many men stationed at their benches show that the
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