The original scan for this article is located at: https://chroniclingamerica.loc.gov/lccn/sn85066387/1905-09-16/ed-1/seq-9/
San Francisco Call, September 16, 1905, page 9:
BOY INVENTOR GIVES LECTURE
Francis J. McCarty Talks on the Methods of Sending Messages
INSTUMENTS AT FAULT
Practical Demonstrations Are Attempted, but Do Not Prove Satisfactory
Francis J. McCarty, the boy inventor of wireless telephony, gave a lecture of what was intended to be a practical demonstration of wireless telephony at Native Sons' Hall last night. The instruments, however, did not seem to be in working order and their operation was hampered by curious crowds.
The word "Hello" could be made out distinctly at intervals, but sentences sounded tinny, as if they were coming from the horn of a phonograph. Superintendant Langdon of the public schools was present at the experiments. McCarty's assistants declared that the instruments were not adjusted to get the results that are claimed for the invention.
The boy gave the history of signaling from distances from the time of the ancient Greeks, who sent messages by means of torches, down to the latest details of wireless telegraphy and his own invention. He told of the first experiment in wireless telephony, directed by Morse. This was impractical for commercial purposes, as it required three times as much wire as would be used to send messages directly by wire.
He illustrated his lecture by means of diagrams and instruments. He showed how messages could be translated across short spaces by means of Hertzian waves. One of his interesting experiments in this line was to explode powder across the length of the stage without wires. This he maintained can be done at any distance by the same means.
McCarty is only 17 years old. He has been working at this invention for four years. Though the experiments last night were not altogether satisfactory, the young man is confident that he will perfect the invention so that it will be practical for any distance.