Electro-therapeutics: a condensed manual of medical electricity . Gaiffes Pocket-battery. The chloride of silver element, supplied with some ofthese batteries, is very liable to get out of order; the ele-ments here given are to be depended on. Hall andothers have constructed good portable batteries of some-what greater size. In applying electricity to the body, variously-shapedand constructed conductors, called electrodes or rheo-phores, are used. Such conductors, armed with a nakedmetal knob, are used for direct application to mucoussurfaces; a bit of cotton batting may be wound tightlyaround

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Electro-therapeutics: a condensed manual of medical electricity . Gaiffes Pocket-battery. The chloride of silver element, supplied with some ofthese batteries, is very liable to get out of order; the ele-ments here given are to be depended on. Hall andothers have constructed good portable batteries of some-what greater size. In applying electricity to the body, variously-shapedand constructed conductors, called electrodes or rheo-phores, are used. Such conductors, armed with a nakedmetal knob, are used for direct application to mucoussurfaces; a bit of cotton batting may be wound tightlyaround
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Image ID: 2AXEW7J
Electro-therapeutics: a condensed manual of medical electricity . Gaiffes Pocket-battery. The chloride of silver element, supplied with some ofthese batteries, is very liable to get out of order; the ele-ments here given are to be depended on. Hall andothers have constructed good portable batteries of some-what greater size. In applying electricity to the body, variously-shapedand constructed conductors, called electrodes or rheo-phores, are used. Such conductors, armed with a nakedmetal knob, are used for direct application to mucoussurfaces; a bit of cotton batting may be wound tightlyaround the knob, if we choose. When applied to theskin a naked conductor is painful, especially if it hasthe shape of a point, or of a bundle of points (wire- 170 ELECTRO-THERAPEUTICS. brush). To avoid pain, we employ a cap of thick cloth,or a covering.of fine sponge, which when in use arethoroughly wetted with (salt) water. These coverings Fig. 24.. Small Faradic Apparatus by Hall. diminish the force of the current, but serve to keep theskin moist, and in a considerable degree, to lessen thechemical irritation of the skin. A coat of rust mayform upon the metal beneath the sponge, which destroysthe conductive power of the implement. The metal ofwhich the tips are made is commonly copper or bronze,and the salts of copper may give annoyance by stainingthe patients clothes. To avoid this, we may plate with APPARATUS. 171 nickel, or with a film of platinum.1 Carbon tips areperhaps more convenient than any others. They are Fig. 2.5.

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