“Gammon! You were.”

“I suppose I must have been dashed against a block of stone.”

“Good job, too. Doctor said it acted like a safety-valve, and its bleeding kept off fever.”

“I suppose so. I must have been dashed against something with great force, though.”

“Oh, never mind that. Will you leave off thinking about that cave?”

“No, I won’t,” said Lennox coolly. “I must think about it now; I can’t help it.”

“Then I’m off.”

“Why?”

“Because you were getting better, and now you are trying to make yourself worse.”

“Oh no, I’m not; and you are not going. Talking to you about it acts like a safety-valve, too. There, it’s of no use for you to try and stop me, Bob, for if you go I shall think all the more. I’ve been wanting to tell you all about it for days.”