1 was in the electrical building one evening when the sensitiveness of the long-distance trmsmitter was demonstrated ina room full of people. The simple di phragm was mounted on a low pedestal in the middle of the room, above it a number of trumpet-shaped receivers gave out the messages from a distant telephone Toud and clear, so that the voice quite filled the huge room. But the transmitter was wonder, A young man began speaking ina quiet way a few feet from the immocent looking diaphragm, but the replies came ths trumpets instantly. Without his voice the yang man walked backward ten, fifteen, twenty feet, then around outside of the wondering and by no means silent group about the instrument, until he made a circuit of 180° and still the sensitive diaphragm caught the sounds without ever a failure and the conversation went on as well as before. It was a wonderful exhibition of the possibilities of Speech transmission. A slender wire con-neets New York and Chicago which carries the innumerable complex impulses of speech over a thousand miles of prairie, mountains and valleys, preserving every tone and tremor so truely that the listener recognises his friend's greeting as he would near by.
Text read from the printed page and cleaned; old type leaves the occasional error.