, when talking at the mouth- BY M. BOUDET, OF PARIS. This table, instead of being in a single piece, is composed piece, the vibrations are transmitted almost instantaneously, This microphone, with multiple contacts, as shown in the of a certain number of narrow cast iron plates held in a as in the… … small lever which hangs under the table, and which restson a small vertical iron plate affixed to a cross-stay of the ma- which is held therein by a conical ring or sleeve drawn over chine. eter, itself fixed on a jointed stand, thus enabling the whole the ends of the spring socket. The handle is…
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