"Then you know that a breath will upset it and send it rolling.
Be careful. Your mind, your very nature, may be poised like that
billiard-ball. Addison's may be the same. Indeed, I feel sure
Addison's is. That curious dread of you which overcame him at your
last sitting is a sign of it. The whole thing is wrong--bad for body
and for mind."

"Perhaps. Well, we have definitely agreed to give it up."

"That's well. Eleven o'clock! I must be going. Are you doing anything
to-morrow night?"

"No."

"I have got a box for this new play at the Duke's Theatre. Will you
come?"

"With pleasure."

"I will ask Addison also."

They put on their overcoats, and walked a little way along Pall Mall
before they parted. Near the Atheneaum they passed a tall, thin man,
who was coming in the opposite direction. He turned round as they went
by, and stood directly regarding them till they were out of sight.