Excerpt from The Medical News and Abstract, Vol. 39
Gentlemen: We have had before us many cases in which the applications of electricity have been directed. Sometimes it is the galvanic, sometimes the faradic current which we employ for diagnosis or for treatment. A little inquiry will easily demonstrate, that, if we use electricity as it should be used, both kinds of batteries are necessary. In the purchase of an instrument, the buyer is sometimes misled by the statement that a particular battery furnishes all the currents - a primary or galvanic current, and the various secondary currents. A faradic instrument, of course, furnishes an induced current, and the induction exerted between the coils of the primary wire may be utilized, as well as that from the secondary wire, so that various modifications of the induced currents are available. But no one should be deluded into believing that a faradic battery can also furnish a galvanic current. Pray, do not understand me as saying that the two forms of batteries cannot be combined in the same apparatus. These may, of course, be put in one box, both faradic and galvanic combinations, and the dealers now make very beautiful and perfect instruments of this kind.
I am thus minute in stating these elementary facts, because I am frequently interrogated by students and physicians in regard to these points. I start out with the declaration, then, that if you expect to use electricity in a truly scientific way, you must be provided with both kinds of apparatus, either separately, or combined in one box. Much may be done by faradic application alone; but in its own sphere, and if employed merely to affect the imagination of the patient, it will be quite as successful as both. I hope none here present, however, will descend to electricity quackery, whether openly or under the guise of its scientific use.
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