Democratic Sentinel, Volume 3, Number 51, Rensselaer, Jasper County, 30 January 1880 — The Audiphone. [ARTICLE]

The Audiphone.

Prof. Calladon’s improvements upon tho audiphone, of which the cable bears record this week, seem to have boon anticipated by Philadelphia investigators. At tho last meeting of the County Medical Society five or six cheap and ingenious substitutes for the costly india-rubber contrivance were proposed and tested. An ordinary palm-leaf fan, or a piece of pasteboard, bent into tho form of a shield, was found to answer in an emergency; and a piece of card-board coated with shellac and perforated by a steel rod—the whole costing about 5 cents—gave better results than the original audiphone. It must not be supposed that only those who have not lost their teeth can receive any benefit from this wonderful invention, or its more wonderful substitutes, for it will act equally well, whether held between the gums or artificial teeth, if care be ouly taken by previously applying a vibrating tuningfork to them to impress upon the person’s mind that he must expect to heaf the sound, not through his ears, but through his teeth and gums.— New York Tribune.