The Birmingham age-herald., 1915-10-06

J. Carty was perfecting the auxiliary oi the long distance telephone which has been described as the phantom circuit ' certain qualities contained within the vacuum tube, and skillful scientific em- ployment of the tube made it possible to reinforce, at various stations between New York and San Francisco, the cleo tric energy by means of which long dis tance communications were secured. At Pittsburg, then again at Kansas City and st Denver, the vacuum tube infused new life, so to speak, into the electric cur rent. MT. Carty's phantom circuit also reinforced the long distance apparatus. and the two inventions demonstrated to the world that American invention had been able to accomplish what men of science of Europe had been unable to demonstrate.
 Some of the men of science were per sIaded that the triumph of this long dis tance telegraph apparatus would inevita- l. bly, be followed by a demonstration that an apparatus had been perfected whereby the human voice could be heard inteligi- bly, by use of the Hertzian waves for as great a distance as the words could be transmitted by telegraph wires Any one who has had the privilege of visiting Dr. Hewitt in his laboratory must have been amazed by certain weird and mystic dem- onstrations sof the rela tions by which he had established the telephone and the vacuum vapor tube whereby eommuni- cation could be taken from telephone and transmitted by wireless to any point. Sometimes the telephone sends forth strains of music and these are captured and controlled by means of the vacuum tube and the Hertzian waves. Although there has vet been no detailed informa- tion respecting the apparatus which made 1t possible for President Theodore N. Vail to communicate by telephone with the wireless station at Arlington, where the communication was picked up by wire less telephone apparatus and conveyed in- telligibly to John J. Carty at San Fran cisco, nevertheless there can be no doubt that the apparatus Is in part an ampli- fication of an invention of Dr. Hewitt
 As 10 its commercial possibilities, MT. Carty, while admitting by wireless tele- phone message from San Francisco that the apparatus from the point of view of science is a perfect success, neverthe- less confessed himself to be in doubt, at least until certain factors not yet un- derstood or mastered. have yielded to re- search. However. this Is exactly what was said of the long-distance telegraph, at least so far as the commercial practi- cability of it for service between New York or even Chicago and the Pacific coast is concerned. There are some req sens for inferring that Dr. Hewitt is al- most persuaded that other and from the commercial point of view much greater possibilities may be secured through the utilization of the vacuum tube.
 While it may be long time before there is such general use of the long distance telegraph or the long distance wireless telephone as will yield profitable returns upon the investment, yet there is no doubt that indirectly and as a consequence of these inventions there will come develop ments and commercial advantages which will be of the highest advantage both to those who have invested capital in this apparatus and also to the people of the United States.