Tesla Doubts

HE DOES NOT BELIEVE THAT THE BLIND CAN BE MADE TO SEE BY THE X-RAY.

New-York, Dec. 1.—The Electrical Review, New-York, will publish tomorrow an exhaustive communication from Nikola Tesla on his latest experiments with the X-rays, which it characterizes as conveying a wealth of suggestion and much important and timely information.

The inventor in referring to the recently widely-heralded experiment for making the blind see by means of the Roentgen rays, regretfully remarks:

“Is it not cruel to raise such hopes when there is so little ground for it? For, first of all, the rays are not demonstrated to be transverse vibrations. If they were, we would have to find means for refracting them to make possible the production of a sufficiently small image upon the retina. As it is only a shadow of a very small object can be projected. What possible good can result from the application of these rays to such purposes?

“I cannot confirm some of the experiments reported. For instance, when a hand is put before the closed eyes it is easy to distinguish the shadow, much the same as before the light of a candle, but when the tube is inclosed, and all light from the room excluded, I fail to get such an impression. The latter is, therefore, chiefly due to ordinary light.”

The inventor concludes his latest communication with an account of his method of making X-ray impressions.