I see only my great shell surrounded by light, resting on light!" "Roland," said Margaret, "you are crazy! Perhaps it is water which fills that cave, or whatever it is." "Not at all," said Roland.

"It presents no appearance of water, and when the camera came up it was not wet.

No; it is a cave of light." He sat for some minutes silently gazing out of the window.

Margaret drew her chair closer to him.

She took one of his hands in both of hers.
"Look at me, Roland!" she said.