+The Paquellin Thermo-Cautery+ is a convenient form. It consists of hollow platinum cauteries and a handle covered with wood; a benzole reservoir; a pair of rubber bulbs, like those for a hand-spray apparatus, connected by a tube with the reservoir; a long rubber tube to connect the cautery handle also with the reservoir; and a spirit-lamp with attached blow-pipe. Screwing on the desired point, the tube from the reservoir is slipped over the handle; the point is heated in the lamp; is removed from the flame; and, compressing the bulbs, which should previously have been connected with the reservoir, benzole vapor is forced into the point, which will heat up, and can be maintained at any temperature by the rapidity with which the bulb is worked. If the point will not heat with the simple flame, attach the bulbs to the blow-pipe on the lamp, and, compressing them, heat the cautery to a bright-red heat, and then connect with the reservoir and proceed as before directed. +Galvano-Cautery.+ This requires a battery of a few large elements closely coupled, and various curets, knives, and ecraseurs fitting into insulated handles. The chief advantage of this form of cautery is the possibility of placing the instrument in position while cold, and then heating it. Where hemorrhage is undesirable, a dull-red heat should be maintained, for at a white heat the tissues are divided as if with a knife, and bleeding follows. When the ecraseur is used, needles must be passed at right angles through the healthy tissues, the platinum wire placed behind these, and the wire, at a dull-red heat, slowly tightened. +ELECTRICITY+ +Electricity.+ This is used in the form of the _induced current_ (Faradism) to exercise and improve the nutrition of muscles, and in the form of the _constant current_ (galvanism) along the course of nerve-trunks, to excite their conducting power, or to act as a sedative in neuralgias. The same current is used to induce chemical decomposition (_electrolysis_) or to cauterize and destroy tissue by heating an encircling wire or by a galvanic knife. Franklinic, or static electricity, is also occasionally used. +Electrolysis.+ For electrolysis a galvanic battery of thirty or more medium-sized cells is required, with needle electrodes insulated, except near their points. To destroy a verruca, introduce into it two needles, a short distance apart, each connected with a pole of the battery; then, commencing with a weak current, this must be cautiously increased, the sitting lasting from a half hour to one hour, after which the needles are to be removed and the punctures sealed by collodion. +MASSAGE+ +Massage.+ This is employed to stimulate the circulation in the part mechanically; to loosen tissues bound down by adhesions; to diffuse inflammatory exudates over a wider area, thus favoring their absorption; and to change the rate of the circulation to a point compatible with rapid absorption and normal nutrition.