At exactly a quarter past nine the following morning, Lord Rockstone with military precision rose from his desk. "I fear that my time is up, Mr. Edestone," he said, glancing at his watch. "I have enjoyed this opportunity of meeting you and listening to your presentation of your theory. Your drawings are most interesting; your photographs convincing, if--" he paused, his lip curling slightly under his long tawny moustache,--"if one did not know of the remarkable optical illusions capable of being produced in photography. Our friends, the Germans, have become particularly expert in the art of double exposure." Then, as if he thought he might have said too much, he added less crisply: "Please do not understand that I doubt either your sincerity, or that of the Government at Washington in this matter; you may have both perhaps been deceived. I hope that your stay in England may be pleasant, and I regret that this war will prevent you from receiving the attention to which your letters and your accomplishments would entitle you." With an expression on his face that said plainer than words: "This is the last minute of my most valuable time that I intend to give to this nonsense," he bowed formally, and reseating himself at his desk, took up papers. Then without looking up, "Good morning, Mr. Edestone." The American did not allow himself to show the slightest trace of annoyance at the brusque dismissal. "You will at least permit me to thank you for your kind intentions, sir," he said; and standing perfectly still until he had forced Lord Rockstone to look up, he added with a smile, "We may meet again, perhaps." There was something about his perfect ease of manner as he stood waiting which showed that although he would not condescend to notice it, he was both conscious of the War Minister's unpardonable rudeness and intended to make him acknowledge it. Rockstone hesitated a moment; then with a belated show of courtesy came from behind his desk, and stiffly extended his hand. "You Americans are the most extraordinary people," he said; "I must admit, I never quite understand you." "Then you must grant us a slight advantage," rejoined Edestone evenly; "because we believe we do understand you Englishmen. If there had been the same clear understanding on your side in the present instance it