Lectures on nervous diseases from the standpoint of cerebral and spinal localization, and the later methods employed in the diagnosis and treatment of these affections . ce). It is not uncommon for agents of the various manufacturing companies to show aprospective purchaser of a faradaic machine the galvanic cell which works the inter-rupter, and to endeavor thus to leave the impression that a galvanic current (as well asthe primary and secondary faradaic currents) can be conveyed by a faradaic machine to apatient. Such a statement is untrue, and, if made, indicates either ignorance or dishone
Lectures on nervous diseases from the standpoint of cerebral and spinal localization, and the later methods employed in the diagnosis and treatment of these affections . ce). It is not uncommon for agents of the various manufacturing companies to show aprospective purchaser of a faradaic machine the galvanic cell which works the inter-rupter, and to endeavor thus to leave the impression that a galvanic current (as well asthe primary and secondary faradaic currents) can be conveyed by a faradaic machine to apatient. Such a statement is untrue, and, if made, indicates either ignorance or diagrams will render the mechanism of a faradaic machine intelligible to thereader. t The expression in contact is not strictly correct. The interrupter never actuallytouches the iron core, because its magnetic action ceases before it reaches it. 39 610 LECTURES ON NERVOUS DISEASES. Of greater capacity than those used in portable galvanic may be placed in the same case, bnt each shouUl be perfectlyindependent of the other. If a battery is designed for transportation,it is best to have one of each ratlier than two combined in one Fig. 134. One of the Forms of Faradaic Machine—BB. connecting rods attached to the elements of the excilina cell : D. a drip-cuo, in which the zinc elemetit is placed whennot in use (it should contain mercury): E, primary and secondary coils , F, adjustins; screwfor the interrupter (7); G, ; /v. plun-er; A, .1/, rheophores ; O, j, electrodesThe next tigure will explain the action of the difterent parts The faradaic instruments ofdifferent manufacturers vary more or less in their mechanicaldevicesand perfection of work-manship, but the principle of all is the same. Yhe faradaic current is an alternatinrf current,—, one which goesin opposite directions at each make and break of the circnit. It isstronoest when the current is In-oken. These facts ai-e not generallyrecoo-nlzed by the profession.
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Keywords: ., bookcentury1800, bookdecade1880, bookidlecturesonne, bookyear1888
