to the fact.

"Well," I spoke, "have you got that hundred thousand dollars? You
had an idea once."

He looked up. "I've got it yet. I am not certain. It is merely a
theory. But it's not impossible."

"Well, what is it?"

He took another drink of coffee and settled back in his chair.

"It is energy, Harry--force. Nothing but energy--and Nature."

"Then it's not occult?" I asked.

"Certainly it is. I didn't say that. It is what the professor
promised. Something concrete for our senses. If the occult is, it
can certainly be proven. The professor was right. It is energy,
force, vibration. It has a law. The old doctor was caught somehow.
We must watch our step and see that we aren't swallowed up also.
Perhaps we shall go the way of Watson."

I shuddered.

"I hope not. But explain. You speak in volumes. Come back to
earth."

"That's easy, Harry. I can give you my theory in a few short
words. You've studied physiology, haven't you? Well, that's where