Recent Discoveries by Professor Trowbridge.

Professor J. Trowbridge, Director of the Jefferson Physical Laboratory, has recently made several important discoveries in electricity. He has found that just ten thousand volts are necessary to produce the so-called X-rays. His discoveries have broken up the old theory that the carbons in an are light must be united to start the flow of light; it seems that, as a matter of fact, the first spark overcomes the atmospheric resistance and the column of air thus heated conducts the following stream of light.