to walk aboard of the ship when he gave the signal; but to-day, if we new. I asked Mr. Carty to explain it. He is our chief engineer; but buttressed by hundreds of others. An open-door policy was adopted for To sum up this development of the art of tele-phony--to present a train the cattle for a couple of years, so that they would know enough outsiders. It has as many separate branches of study as medicine or law. he did not understand it. We called the manager. He did n't know, and language of its own, a telephonese that is quite unintelligible to slide them on board in a jiffy." invention. Change followed change to such a degree that the experts of profession. As Carty has aptly said, "At first we invariably approached variety of things that touch or concern his profession. who was able to tell us what it was." a general knowledge of telephony. And no matter how wise a telephone called his assistant. He did n't know, and called the local engineer, cattle on a steamer, our method would have been to hire a Hagenbeck to The telephone world has now its own standards and ideals. It has a "No one man knows all the details now," said Theodore Vail. "Several The art of the telephone engineer has in thirty years grown from the had to ship cattle, we would know enough to make a greased chute and 1880 would be lost to-day in the mazes of a telephone exchange. every problem from the wrong end. If we had been told to load a herd of expert may be, he can never reach perfection, because of the amazing days ago I was walking through a telephone exchange and I saw something most crude and clumsy of experiments into an exact and comprehensive There are few men, half a dozen at most, who can now be said to have in three years it had become rich. Bell's invincible patent was soon