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January 29, 1887


JAMA. 1887;VIII(5):139. doi:10.1001/jama.1887.02391300027010

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Dear Sir:  —In an article in The Journal of October reference is made to a suggestion of Dr. Franklin H. Martin, of Chicago, who utilizes the properties of the galvanic current discovered by Haertner, who ascertained the valuable fact that particles in solution would, under the influence of a galvanic current, pass through permeable bodies from the positive toward the negative pole of the battery. This important fact caused the writer to experiment on the best mode of applying it so as to produce local anæsthesia and other influences. I think my plan superior to that adopted by Dr. Martin, although the same principle is involved in both.I draw on the part to be experimented upon a hard-rubber cup of any size, under which I put a piece of light rubber cloth, pierced by a small brass wire, to which is attached, on the under surface, a brass button.

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