Although the machine is being used as a tractor, it can be hitched to any lumber wagon, and go about town. been brought out to develop an exact duplicate of the pull of several teams of horses. Perhaps the most unique type of mechanical horse is one that drives with reins. The engine is mounted on a cart which is hitched to the wagon tongue, and is steered by reins, just as a horse would be, once the gasoline engine is started. If a person pulls back a trifle on the reins and then lets go, he engages the multiple-disk dry clutch, thus starting the tractor forward. A pull on both lines together stops the tractor. Further pulling on both lines at the same time moves the control mechanism backward, and the tractor "backs". A release or slacking of both lines is the same in effect as the "giddap" of the driver of the horsedrawn vehicle, and the tractor starts forward again. The engine is controlled by a governor and runs at a fixed speed, although the speed may be changed by changing the speed of the governor, when it is necessary to speed up the horse. Who is "The Bad Man of the Movies?" He is one of the most famous of all the players. Naturally, he is also one of the most popular of the players. Yet, if in real life he did the things his part calls for, he would quickly land in prison. That's just what happens to him in the movies, and he wins, thereby, the sympathy of the audience. But the Bad Man of the Movies has reformed. His complete story will be told in June TECHNICAL WORLD. wanna are considering using this apparatus for train dispatching. PHONING FROM FLYING TRAINS By IRVING E. CRUMP SHORT time ago, old Number Five, the Buffalo flyer of the Delaware, Lackawanna, and Western Railroad, roared roared A into the terminal yard at Hoboken, bringing with it Lee De Forest, L. B. Foley, and several others in a party. Though no one but the train crew and the president of the Lackawanna Railroad knew it, these men had been experimenting for months with a wireless telephone system designed to transmit messages from the flyer to a trackside station at Binghamton, New York, and they had finally been successful. That very evening, rushing on through the night at a mile-a-minute pace, these men had picked up the wireless telephone operator at Binghamton, and talked with him five times from five different points along the track. The first message was telephoned when the express was at Lounsberry, twenty-six miles west of Binghamton. From then until the train reached Alford, twenty-seven miles east of the city, messages were exchanged between the special and the Binghamton division headquarters. And with the recording of these messages, radio telephony from a moving train was pronounced practicable. This, of course, is the very first step. in that important telephone development. But De Forest has stated that with so much accomplished, it is only a matter of a few months when a passenger on the Lackawanna Railroad will be able to go to the wireless telephone booth-to be maintained on all overland trains-pick up the receiver, and get into communication with any central telephone station equipped with a radio set. The arrangements in the central station will be such that a subscriber in the city in question will be able to have his extension connected with the radio set, and the traveler will actually be able to exchange words with his secretary, his business partner, or his family, at any time during his journey. The equipment of the Buffalo flyer, which is the only outfit of its kind in the world, is unusually complete. De Forest has converted a combination mail and baggage car into a generating station on wheels. A five-horsepower steam-turbine generating unit has been installed. This turbine takes its steam from the locomotive through a flexible conduit, steam being supplied at 125 pounds' pressure. All the electrical equipment is contained in this single car, with the exception of the telephone set, which is located in the car next in line. The instrument is installed in a mahogany-lined booth and at first. at first glance appears to be an ordinary walltype telephone of proportions a little larger than usual. Current from the generating car is supplied to the instrument through adjustable and wellinsulated cables. The business end of the telephone is located on the roof of each of the first four cars in the train. The antenna system is composed of two number ten, stranded, phosphor phosphor bronze wires, which are elevated on what are known "petticoat" porcelain insulators, as about eighteen inches above the roof of each car. When the train is made up, all four antenna wires are connected by means of flexible connectors so that the entire system is some 300 feet in length. The equipment in each trackside station is almost the same as that on board the flyer, except that the antenna is well elevated and looks very much like the average wireless telegraph station. Though De Forest has been experimenting with the Lackawanna outfit but a few months, his actual work on the wireless telephone system has extended over a period of years. He has faced and mastered hundreds of difficult problems, not the least of which was to perfect an instrument which would overcome the roar and rumble of the moving train. This was accomplished by means of an instrument known as the audion, which amplifies the voice current to more than sixty times the original intensity and thus raises it far above the local noises. This audion is also being used on the THE RECEIVING END OF THE TRAIN TELEPHONE Wireless equipment such as this may be common on railroad stations in the future, if the new apparatus works as ex pected. This view shows the Lackawanna Terminal, where the experiments are being conducted. Experiments indicate that such a station on a moving car will enable passengers to talk to a friend or business acquaintance anywhere in the country. now famous transcontinental telephone orders verbally to the train conductors service. Besides being a boon to the traveler, this wireless telephone system will also greatly facilitate the operation of trains. on the Lackawanna. According to Mr. Foley, superintendent of the telephone and telegraph system of the Lackawanna, the officials contemplate establishing a series of small radio telephone stations, located at certain signal towers along the right of way. With these, it will be possible to transmit or engineers direct. Mr. Foley says: "Dr. De Forest is bringing out a very small radio telephone transmitter which can be installed complete for less than $400, and which will be capable of telephoning to a caboose over a range of two or three miles. He estimated that a railroad line of 500 miles can be fully equipped for such freight signaling service for an initial outlay of $30,000. Operating expenses, all told, would not exceed $1000 per annum." It was made to be exhibited in San Francisco, and is a faithful model of a standard make. one responds and makes a huge letter on a sheet of paper that is nine and a half feet wide. Each piece of type is three inches high, or almost twice the size of the largest display type in daily newspapers. The machine itself is twenty-one feet wide and fifteen feet high. streets of the little city, there is a row of trees which arch to meet others planted along the opposite curbstone. At the time the law went into effect, great numbers of trees were set out, but they were not paid for until they had grown for two years, so that practically |