"Just so," rejoined Stepton, making no apology.

"And I really think," continued Chichester, with a sort of pressure—"I really think I am entitled to ask for some explanation of the matter."

"Certainly you are."

"Well?" He paused, then said again, "Well, Professor Stepton?"

"I'm afraid I've nothing to tell you, I like to stick to facts."

"I only ask you for facts."

"The facts amount to very little. Coming from the museum I ran across a man. You were the man. My attention was riveted at once. I said to myself, 'I must see that man again.' Next day I took my chance. I had luck. You were there at pretty much the same hour."

"I always come from St. Joseph's—"

"Exactly. And so it's happened on several days. And that's all I have to tell you."

"But surely you can indicate why—"