“He moved with those big, lithe, striding steps one sees”—John held his breath in the little pause, listening keenly—“one sees those big brutes make in the cages when their desire is aflame for food or escape, or—or fierce, passionate desire for anything they want with their whole nature——”

“The big felines!” John whistled softly.

“And every minute getting nearer and nearer to the door, as though he meant to make a sudden rush for it and get out.”

“With the violin! Of course you stopped him?”

“In the end. But for a long time, I swear to you, I found it difficult to know what to do, even to move. I couldn’t get my voice for words of any kind; it was like a spell.”

“It was a spell,” suggested John firmly.

“Then, as he moved, still playing,” continued the other, “he seemed to grow smaller; to shrink down below the line of the gas. I thought I should lose sight of him altogether. I turned the light up suddenly. There he was over by the door—crouching.”

“Playing on his knees, you mean?”

William closed his eyes in an effort to visualize it again.

“Crouching,” he repeated, at length, “close to the floor. At least, I think so. It all happened so quickly, and I felt so bewildered, it was hard to see straight. But at first I could have sworn he was half his natural size. I called to him, I think I swore at him—I forget exactly, but I know he straightened up at once and stood before me down there in the light”—he pointed across the room to the door—“eyes gleaming, face white as chalk, perspiring like midsummer, and gradually filling out, straightening up, whatever you like to call it, to his natural size and appearance again. It was the most horrid thing I’ve ever seen.”