It was sometime before I could make him understand; even then he
refused to believe me.

"It was all a dream," he said; "all a dream."

But I was certain.

Fenton began prodding about the room. I do not believe any
apartment was ever so thoroughly ransacked. We even tore up the
carpet. When we were through he sat in the midst of the debris and
wiped his forehead.

"It's no use, Harry--no use. We might have known better. It can't
be done. Yet you say you saw a string of incandescence."

"A single string; the form of Watson; a blur--then nothing," I
answered.

He thought. He quoted the professor:

"'Out of the occult I shall bring you the proof and the substance.
It will be concrete--within the reach of your senses.' Isn't that
what the doctor said?"

"Then you believe Professor Holcomb?"

"Why not? Didn't we see it? I know a deal of material science; but
nothing like this. I always had faith in Dr. Holcomb. After all,
it's not impossible. First we must go over the house thoroughly."