"I don't know what that thing in the box was. I can't ever hazard a guess. But a beam of light leaped at me from the box, and the light originated at a spot that was several inches above the bottom. In other words, it came from nothingness.
"As I straightened up, the light vanished. Morton said, 'Did you see that damned thing?' I asked him what it was. He didn't know but he seemed puzzled and perturbed and he asked me to look again.
"Then I began to see more clearly. There was something in the box, something that was almost invisible."
"Invisible?" Kennedy breathed huskily.
"Yes. Almost invisible. From certain positions we could see the contents of the receptacle—a smoky, misty mass. That's the only way I can describe it. A smoky mass. It was unreal, and just trying to look at it strained the eyes."
"What happened then?" Kennedy said.
"Morton thrust his hand into the box. And his hand disappeared!"
"What!"
"His fingers, up to the knuckles, simply disappeared. No, they weren't cut off. The effect was similar to thrusting the hand into a basin of murky water. Morton instantly jerked his hand out, and it was uninjured, except that the fingers were stained a faint red. The point is—there was something in the box that was almost invisible, and an object thrust into it was rendered invisible, too.
"Morton was tremendously puzzled. I can't recall his exact words, but he seemed to be of the opinion that the contents of the box were extra-dimensional."