She smiled at him.
"Then do!"
In the midst of her smile she yawned.
"I shall go to bed directly," she said.
She seemed to suppress another yawn.
"You mean to go to bed early?" he asked.
"Almost directly. Do you mind? I'm dog tired with the long camel ride, and I shall sleep like twenty tops."
She put her hand on his shoulder. Her whole face was looking sleepy.
"You old wretch," she said. "What do you mean by looking so horribly wide awake?"
He put his hand over hers, and laughed.