"I saw a spark--yes!"

"And do you mean to tell me you are not beginning to feel queer?"

"Not in the slightest."

"Look me squarely in the eye, young man, and tell me whether you do not have a sensation as though your heart were cutting capers?"

"Not in the least," said Yates, calmly. "If that machine worked at all it wouldn't surprise me if you yourself had become entangled in it--caught in your own machine!"

"W-what!" exclaimed Carr, faintly.

"It wouldn't astonish me in the slightest," repeated Yates, delighted to discover the dawning alarm in the older man's features. "You opened the receiver; you have psychic waves as well as I. I was in love at the time; you were not. What was there to prevent your waves from being hitched to a wireless current and, finally, signaling the subconscious personality of--of some pretty actress, for example?"

Mr. Carr sank nervously onto a chair; his eyes, already wild, became wilder as he began to realize the risk he had unthinkingly taken.

"Perhaps you feel a little--queer. You look it," suggested the young man, in a voice made anxious by an ever-ready sympathy. "Can I do anything? I am really very sorry to have spoken so."

A damp chill gathered on the brow of Bushwyck Carr. He did feel a trifle queer. A curious lightness--a perfectly inexplicable buoyancy seemed to possess him. He was beginning to feel strangely youthful; the sound of his own heart suddenly became apparent. To his alarm it was beating playfully, skittishly. No--it was not even beating; it was skipping.