Graves moved forward and thoughtfully examined the split table and the rusty old relic of Valley Forge, but Rockstone did not offer to stir. With what was almost a sneer on his face he met the challenging glance of his younger confrère.

“I would not have believed, Underhill,” he said impatiently, “that you with your experience with the fakirs of India could have been taken in by so old a trick.” He half-closed his eyes as if to indicate that for him at least the incident was closed.

Underhill frowned. “You are wrong, Rockstone,” he exclaimed impulsively. “This man is no faker, nor am I so easily imposed upon as you seem to think. I tell you that we are called upon to deal with a new agency that can neither be disputed nor sneered away, and unless we can contrive some way to oppose it, the United States will step in and force a peace upon us—a peace that will leave Europe exactly where it was before the war—and keep it so, while she herself can go ahead unchecked and take possession of the whole Western Hemisphere. Don’t you see the scheme?”

“Where is this extraordinary individual?” inquired the Foreign Minister, completing his inspection of the table. “What has become of him?” His thin voice was as evenly modulated as if he were asking where he had put his other glove.

“Oh, probably at Boodle’s or Brookes’s lunching with some of his friends,” Underhill answered indifferently. “He left here only a short time ago. And you need not be afraid, Sir Egbert,” with a significant glance. “A very careful eye is being kept upon his movements. We can get him at any moment if we want him.”

Graves nodded, and then went on meditatively.

“It is of course entirely irregular,” he said, “but from what both of you gentlemen tell me as to the nature of his credentials, there can be little doubt that the man is here with the approval of his Government, if not as an authorized representative. The sole question, therefore, is whether or not he does possess such an invention or discovery as he claims——”

“But can you doubt that?” demanded Underhill hotly.

“And whether,” proceeded Sir Egbert without change of tone, “granting that the contrivance is of value, the United States will permit its purchase for use in the present war.

“On the first proposition, I can only say that if he has this invention, as my young friend of the Navy stands so firmly convinced, it is tantamount to admitting that the United States has a new and terrible instrument of war, in which case it would be most unwise to offend her. If he has not, there certainly can be no objection to allowing him the opportunity of offering to our enemies something that is of no value. Therefore, that seems to settle the question as to the advisability of detaining him, as has been suggested. I should strongly favour letting him go when and where he pleases.