And that was not all. These young men had not only to battle against mystery and "the powers of the air"; they had not only to protect their tiny electric messenger, and to create a system of wire highways along which he could run up and down safely; they had to do more. They had to make this system so simple and fool-proof that every one--every one except the deaf and dumb--could use it without any previous experience. They had to educate Bell's Genie of the Wire so that he would not only obey his masters, but anybody--anybody who could speak to him in any language. No doubt, if the young men had stopped to consider their life-work as a whole, some of them might have turned back. But they had no time to philosophize. They were like the boy who learns how to swim by being pushed into deep water. Once the telephone business was started, it had to be kept going; and as it grew, there came one after another a series of congestions. Two courses were open; either the business had to be kept down to suit the apparatus, or the apparatus had to be developed to keep pace with the business. The telephone men, most of them, at least, chose development; and the brilliant inventions that afterwards made some of them famous were compelled by sheer necessity and desperation. The first notable improvement upon Bell's invention was the making of the transmitter, in 1877, by Emile Berliner. This, too, was a romance. Berliner, as a poor German youth of nineteen, had landed in Castle Garden in 1870 to seek his fortune. He got a job as "a sort of bottle-washer at six dollars a week," he says, in a chemical shop in New York. At nights he studied science in the free classes of Cooper Union. Then a druggist named Engel gave him a copy of Muller's book on physics, which was precisely the stimulus needed by his creative brain. In 1876 he was fascinated by the telephone, and set out to construct one on a different plan. Several months later he had succeeded and was overjoyed to receive his first patent for a telephone transmitter. He had by this time climbed up from his bottle-washing to be a clerk in a drygoods store in Washington; but he was still poor and as unpractical as most inventors. Joseph Henry, the Sage of the American scientific world, was his friend, though too old to give him any help. Consequently, when Edison, two weeks later, also invented a transmitter, the prior claim of Berliner was for a time wholly ignored. Later the Bell Company bought Berliner's patent and took up his side of the case. There was a seemingly endless succession of delays--fourteen years of the most vexatious delays--until finally the Supreme Court of the United States ruled that Berliner, and not Edison, was the original inventor of the transmitter.