There was another point still. If the Plans of the War Engine of Clanronald had once been seen by—alien eyes, the possession of the formulas did not matter two pence. The cat that had grown grey in the bag was out of it for good. In the Colonel’s opinion—a priceless asset in the highly delicate condition of International Politics—a more formidable document than the Foulis Plan was the Note which was even then being placed by Austria’s Representative at Belgrade before the Serbian Council of Ministers. This, in conjunction with Germany’s deferred answer to our proposal of a Conference of Representatives of the Great Powers, and the sudden, secret return of the Emperor of Germany to Berlin—"justifies Admiralty orders that have been issued," said the Minister, "directing our First—ahem!—-Battle Fleet, concentrated—as it happens!—at Portland, not to disperse for Manoeuvre Leave." The speaker, who had pushed back his chair and crossed his legs, looked very steadily at Sir Roland as this last sentence very quietly left his thin lips. Not a muscle twitched in the other’s lean, keen face. The Minister went on: "Thus I may hope I have made clear to you my view of the situation. As for the Flying-officer, Count von Herrnung—we may presume him to have been—for no doubt he is drowned—a military spy. The German General Staff have a preference for employing men belonging to the higher social circles for work of this kind. Wonderfully organised, their system of strategical and political investigation!" Sir Roland agreed: "Wonderfully organised, when one goes closely into its ramifications—tracing and following them to their Headquarters in a certain underground office at the Wilhelmstrasse! But they fail in one thing. The kind of operations they contemplate can usually be deduced from the line of their reconnaissance!" "And yet in the instance under consideration," hinted the Minister, "Count von Herrnung’s intention of commandeering a machine from the Hendon Flying Ground seems to have been fairly well disguised!" "Pardon me!" opposed Sir Roland, with quiet assurance. "He had no such intention when he arrived at Hendon. His orders were conveyed to him on the ground! And the haste with which he was got out of England with the brown satchel proves that his superiors did not dare to delay even for the precautionary measures, and that no copies nor photographs have been made of the Foulis MSS. and plans! Take it from me that the cat, if she has not already got to Germany, remains in the brown bag!" "And the bag is somewhere in the North Sea. But it may be recovered," said the Minister, "with the body of von Herrnung." The General returned, with a deepening of the lines upon his forehead, and at the angles of his mobile nostrils: