. Practical electricity in medicine and surgery. roded by the electrolytic action when a saline solution is usedto moisten them. The cut (Fig. 198) shows a number of theelectrodes used by Erb. The smaller ones are used for finenerve-branches and small muscles, while the larger ones are usedfor determining the quantitative reaction of various indifferent electrode of Erb has a surface of fifty squarecentimetres, is oblong in shape, with a slightly concave surface,and well padded with cotton. Its size is about five by ten cen-timetres (two by four inches). This electrode is useful in
. Practical electricity in medicine and surgery. roded by the electrolytic action when a saline solution is usedto moisten them. The cut (Fig. 198) shows a number of theelectrodes used by Erb. The smaller ones are used for finenerve-branches and small muscles, while the larger ones are usedfor determining the quantitative reaction of various indifferent electrode of Erb has a surface of fifty squarecentimetres, is oblong in shape, with a slightly concave surface,and well padded with cotton. Its size is about five by ten cen-timetres (two by four inches). This electrode is useful in stimu- 238 PRACTICAL ELECTRICITY IN MEDICINE AND SURGERY. lating large muscles to contraction and in applying electricity tothe chest, abdomen, and thighs; where large surfaces are to becovered at a time, still larger electrodes are used by Erb, vonZiemssen, and others. For the purpose of stimulating the sensation of the skin,or of producing reflex muscular contraction by irritation of theskin, the electric brush or scourge is used (Fig. 199).. Fig. 199.—Electric Brush. In order to reduce the expense of an electrical outfit and toeconomize space, instrument-makers usually furnish a commonor universal handle, to which all the various electrodes maybe attached. Some of these handles are plain, others are pro-vided with a key for interrupting the current. Examples ofeach are here shown (Figs. 200 and 201).
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectelectri, bookyear1890
