nothing.

"Never mind the ship," said Wade. "Listen to me, Davidson. Do you know
what hallucination means?"

"Rather," said Davidson.

"Well, everything you see is hallucinatory."

"Bishop Berkeley," said Davidson.

"Don't mistake me," said Wade. "You are alive and in this room of Boyce's.
But something has happened to your eyes. You cannot see; you can feel and
hear, but not see. Do you follow me?"

"It seems to me that I see too much." Davidson rubbed his knuckles into
his eyes. "Well?" he said.

"That's all. Don't let it perplex you. Bellows here and I will take you
home in a cab."

"Wait a bit." Davidson thought. "Help me to sit down," said he presently;
"and now--I'm sorry to trouble you--but will you tell me all that over
again?"

Wade repeated it very patiently. Davidson shut his eyes, and pressed his
hands upon his forehead. "Yes," said he. "It's quite right. Now my eyes
are shut I know you're right. That's you, Bellows, sitting by me on the
couch. I'm in England again. And we're in the dark."