Tesla, 77, Discovers New Power Source

NEW YORK, July 10. — Nikola Tesla, the renowned physicist and inventor who developed the fundamental principle of radio, marked his 77th birthday today by indicating the discovery of a hitherto unknown source of unlimited energy so practical that the machinery to har- ness it will last 500 years and so basic that it will undo the Einstein theory of relativity.

"They called me crazy in 1896 when I announced the discovery of cosmic rays." Tesla said. "Again and again they jeered when I dis- covered something new and then years later saw that I was right. Now I suppose it will be the same old story when I say I have discovered a hitherto unknown source of energy-unlimited energy that can be harnessed.

"The initial cost will be relatively big. After that hardly anything and unlimited power for the asking."

Tesla has given the world the arc lighting system, the Tesla coil, the rotating held principle for alternative currents and innumerable other electrical devices