All About Inventions and Discoveries
The Romance of modern scientific and mechanical Achievements

i7° All About Inventions distinctly heard upon the wireless receiver. This report decisively proved the possibility of telephoning over a distance of 2,500 miles, using only the ether as the medium of transmission. But this was not the most illuminating feature of the test, because even more remarkable records were reported. A message came from San Diego saying that the con- versation through the air had been accurately re- corded, while the words were also caught at Darien, on the Isthmus of Panama. But the seal to the achievement was made by the report of the engineer, who had been sent to Hono- lulu, stating that he had clearly heard a message sent from the Arlington wireless station, and had even recognised the voice of the speaker, whose name he mentioned. Inquiry substantiated the latter factor. The ability to distinguish and to recognise a human voice after flying for 4,000 miles through space con- stitutes an unparalleled achievement in wireless tele- phony. The significance of this latter feat may be better appreciated by stating that the distance between New York and Honolulu is greater than that between New York and London, Paris, and Berlin, and even exceeds the distance between the American city and Petrograd, or even the North Pole. While war prevented the possibility of carrying out experiments between New York and Europe, sufficient time and facilities were granted to make one test in this direction merely to establish its feasi- bility or otherwise. To the complete satisfaction of everyone concerned the sounds of the human voice uttered in New York were recorded at the Eiffel Tower wireless station in Paris. Thus the practica-