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clothes-lines. Each short little wire stood by itself, with one young men received, and this was all. There were no switchboards of to make this system so simple and fool-proof that every one--every one SYSTEM OF ANY SORT WHATEVER. any account, no cables of any value, no wires that were in any sense of the telephone that we call the receiver. This was practically the would echo the tramp of a fly that walked across a table, or repeat in to general use in any country. It opened up a new world of sound. It them could be joined at a moment's notice. sum total of Bell's invention, and remains to-day as he made it. It was out a plan whereby it could be carried out. Here was the new problem, adequate, no theory of tests or signals, no exchanges, NO TELEPHONE mystery and "the powers of the air"; they had not only to protect their except the deaf and dumb--could use it without any previous experience. then, and is yet, the most sensitive instrument that has ever been put And that was not all. These young men had not only to battle against wanted to be in the same conversational group. This was a larger use of and a most stupendous one--how to link together three telephones, or three hundred, or three thousand, or three million, so that any two of instrument at each end. There were no operators, switchboards, or New Orleans the prattle of a child in New York. This was what the which he could run up and down safely; they had to do more. They had tiny electric messenger, and to create a system of wire highways along They had to educate Bell's Genie of the Wire so that he would not only exchanges. But there had now come a time when more than two persons the telephone; and while Bell himself had foreseen it, he had not worked As for Bell's first telephone lines, they were as simple as