A moment more and the chamber grew much clearer: a patch of sunlight had fallen upon a mirror on the wall opposite that against which the other leaned, and on the dust I saw the path of the reflected rays to the mirror on the ground.

But from the latter none were returned; they seemed to go clean through; there was nowhere in the chamber a second patch of light! "Where are the sunrays gone ?" I cried.
"That I cannot tell," returned Mr.Raven; "-- back, perhaps, to where they came from first.

They now belong, I fancy, to a sense not yet developed in us." He then talked of the relations of mind to matter, and of senses to qualities, in a way I could only a little understand, whence he went on to yet stranger things which I could not at all comprehend.

He spoke much about dimensions, telling me that there were many more than three, some of them concerned with powers which were indeed in us, but of which as yet we knew absolutely nothing.

His words, however, I confess, took little more hold of me than the light did of the mirror, for I thought he hardly knew what he was saying.
Suddenly I was aware that our forms had gone from the mirror, which seemed full of a white mist.