Rensselaer Union, Volume 8, Number 50, Rensselaer, Jasper County, 31 August 1876 — Telephony. [ARTICLE]

Telephony.

We .are informed .by the Expositor that at a party at the residence qI Prof. A. Melville Bell, Brantford, on Friday evening, a rare treat was afforded to the guests in the experimental explanations made by Prof. A. Graham Bell, of Boston, of the. new system of telephony lately invented by that gentleman. Instruments were placed, one in the porch of the residence and the other in an outhouse on the grounds, and communication between these made by ten miles of wire. Mush cal notes, the human voice, and; songs spoken and sung before one instrument were plainly audible by placing the instrument to the ear at the other. By this invention, too, any number of messages can be conveyed over one wire in either direction, provided they have a different pitch; the tones of the voice can pass over the electric wire, enabling the hearer at any distance to hear distinctly what is said, and to distinguish the voice of the speaker. On Thursday the .professor had communication made with his instrument on the common telegraph win* between Brantford and Moust Pleasant (five

miles), and was spoken with while in Mount Pleasant, by Prof. D. 0. Bell and Mr. Griffin from the Dominion office In Brantford. On Saturday evening the professor tried a new experiment, having had an instrument made so that three persons could sing different tnnes or different parts of the same tune into the instrument at the same time. The trial was perfectly successful, the different voices coming distinctly over the wire at the same time, so that they could be separately distinguished by the listener. The practical exemplification of the lately-discovered system of telephony made by the professor affbrded much pleasure and information to those present. —Toronto Globe.