File:The electro-therapeutics of gynaecology (1892) (14586461827).jpg

Identifier: electrotherapeut01goel (find matches)
Title: The electro-therapeutics of gynaecology
Year: 1892 (1890s)
Authors: Goelet, Augustin H., 1854-
Subjects: Electrotherapeutics Gynecology Electric Stimulation Therapy Gynecology
Publisher: Detroit : George S. Davis
Contributing Library: Francis A. Countway Library of Medicine
Digitizing Sponsor: Open Knowledge Commons and Harvard Medical School

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car-bon of the same cell is run to the button marked1. For all the other cells in the series, a wireis run from the carbon element to the other but-tons on the board, following in order, after 1.(See fig. 25.) A wire runs from the post labeled 19to one binding post, and another from the lever,labeled 18, to the other binding post marked 13.The socket attachment at 20 is movable, and can beplaced on the plug of any cell of the dial, so as tobegin with any cell in the series. Every physician who attempts to use electricityshould understand clearly how his cells are set up orarranged, and should be able to do the work himself,in case of necessity, when a practical electrician isnot at hand. Besides such knowledge will serve himwell in case the battery gets out of order and is notworking satisfactorily. Instead of disappointing hispatients, and waiting for days or weeks, as sometimeshappens, for an electrician to repair it, he can do thework himself. JEIe should also be able to tell when
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Fig. 25 — Illustration Showing the Connections op Cells with Cell-Selector Dial — 12V — the battery has been set up correctly, and if the workhas been done well. Test of Polarity.—All batteries should be tested fortheir polarity before being used for the first time, asit sometimes happens that they have been set upwrong or labeled wrong by the workmen engaged intheir manufacture. To do this most conveniently,place the two metallic terminals of the conductingcords from each pole in a vessel of water, and turnon the current. Decomposition of the water willimmediately take place if sufficient strength of cur-rent is employed, and bubbles of hydrogen will formaround the negative pole. With a strong currentbubbles of oxygen will likewise form around thepositive pole, which may lead to some confusion; butthe hydrogen will be the first set free, and by ob-serving from which surface the bubbles first occurthe negative pole can be determined. Another testfor determining the poles of th

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