. Student's manual of electro-therapeutics, embodying lectures delivered in the course on therapeutics at the Woman's medical college of the New York infirmary. fic accuracy is desired they should be made ofinsulated copper wire. For ordinary purposesthe insulated cable made of tinsel thread is all-sufficient. It is more flexible than the copperwire and will not kink, but it is a poor conduc-tor, and, by its resistance, wastes much of thecurrent. Electrodes in electro-therapeusis are thetermini of the poles of the battery from whichthe electricity passes into the body. Of elec- 26 ELECTRO- THE
. Student's manual of electro-therapeutics, embodying lectures delivered in the course on therapeutics at the Woman's medical college of the New York infirmary. fic accuracy is desired they should be made ofinsulated copper wire. For ordinary purposesthe insulated cable made of tinsel thread is all-sufficient. It is more flexible than the copperwire and will not kink, but it is a poor conduc-tor, and, by its resistance, wastes much of thecurrent. Electrodes in electro-therapeusis are thetermini of the poles of the battery from whichthe electricity passes into the body. Of elec- 26 ELECTRO- THE RAPE UTICS. trodes, special forms will be spoken of whenspeaking of special applications. The com-moner forms are flat electrodes of various sizes,consisting simply of a sheet of flexible metal orgauze, covered by a flat sponge and backed byrubber cloth, and smaller ones affixed to ahandle. These latter are best made of various-shaped and sized disks of compressed gas car-bon, covered with sponge, and fitting, by ascrew, to wooden or vulcanite handles, to theother end of which are attached the rheophores;conduction through the handle being accom- Fic. 9. plished by means of a metallic rod, into one endof which the tip screws, and to the other therheophore is fastened. The handles should be about twelve centi-metres long and about two in diameter, and ofa variable cylindrical shape. Have all the screws of the tips of uniform GAL VANISM. 2] size, so they may be used on all handles indiffer-ently. An interrupting handle is an indispensablearticle. This consists of an arrangement bymeans of which the current can be made orbroken, closed or opened, at will by the handof the operator, the electrode remaining insitu. The simplest form is that depicted in fig.
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