“Little invention of my own,” he said. “Now I’ll leave it to you, you didn’t hear me when I fired, did you?”

“No,” said Chester emphatically, “I did not.”

“I knew it,” exclaimed Alexis triumphantly. “You see,” he explained, patting the revolver, “that’s how I was able to kill two of the enemy without you hearing the sound of my revolver. Little invention of my own. No noise, no smoke.”

Hal stretched out a hand.

“Let me have a look at that wonderful weapon,” he said.

Alexis drew back, and returned the revolver quickly to its place.

“No,” he said seriously. “I wouldn’t trust it out of my own hand. If it’s not handled just right, it might get out of commission, and I don’t believe I could make another like it.”

Hal whistled softly to himself.

“He’s the best I ever heard,” he said to himself, “and I’ve heard a whole lot of ’em at one time or another.”

Alexis rode ahead as complacently as before, whistling softly to himself, pausing once just long enough to turn to Hal and ask: