trust towards Mr—er—Mr Dillworthy of Cullington Grange that I see no reason to entertain."
"Assuming the whole incident to be accidental, I think you are doing quite right. But in order to save time mayn't it perhaps be worth while anticipating that something else may have been at work?"
They all looked at Mr Carrados, who advanced this suggestion diffidently. The young man in the background breathed an involuntary "Ah!" of agreement and came a little more to the front.
"Do you suggest that Mr Dillworthy of Cullington Grange would actually deny possession of the book?" inquired the auctioneer a little cuttingly.
"Pardon me," replied Carrados blandly, "but do you know Mr Dillworthy of Cullington Grange?"
"No, certainly, I"
"Nor, of course, the purchaser of Lot 91? That naturally follows. Then for the purpose of our hypothesis I would suggest that we eliminate Mr Dillworthy, who quite reasonably may not have been within a hundred miles of Charing Cross to-day. What remains? His visiting-card, that would cost about a crown at the outside to reproduce, or might much more cheaply be picked up from a hundred halls or office tables."
The auctioneer smiled.
"An elaborate plant, eh? Have you any practical knowledge, sir, of the difficulty, the impossibility, that would attend the disposal of this imperfect copy the moment our loss is notified?"
"But suppose it should become a perfect copy in the meantime? That might throw dust in their eyes. Eh, Marrable?"
"I say!" exclaimed the virtuoso, with his ideas for-
