Remarks on the Electric Cautery with Cases

or some other small animal is shared, and utider the skin, to a depth of half an inch* two platinum needles are introduced. These electrodes are then connected with the opposite poles of an ordinary Bunseh's battery of 12 elements. Instantly a very fine crepitation is heard, and a froth is formed round the two electrodes where they pierce the skin, by the escape of very small bubbles of gas. At the end of about 15 minutes, round each needle, a dark eschar will be found to have formed, dry and hard round the positive electrode, and soft round the negative. If an electrode composed of a small disk of carbon, between which and the skin a thin pad of wet sponge is placed, be substituted for the second needle; the same phenomena take place round the needle, inserted into the thigh as in the first