"Watson, Watson, Moriarty was my mental equal. Now he calls himself von Kluck." I was overwhelmed. Just then a little group of the staff arrived. I recognised amongst them the figures of General J---- and Field-Marshal F----, and saluted. "The spy in staff uniform is the third on your left, Sir," said Holmes casually. The Field-Marshal beckoned a firing party. As the shots rang out I whispered, "How did you know he wasn't English?" "Watson, Watson, did you not see that he had no handkerchief in his sleeve?" * * * "It is all-important, Captain Holmes," said the British Commander, "that we should ascertain what army is opposing our right wing. Our airmen are useless in this fog. I detail you for this duty." Holmes saluted. "Come, Watson," he said, and led me through the fog towards the enemy's lines. We had not walked a mile when we reached a fine chateau. "You are cold, Watson," said Holmes. "Light a fire in the front room whilst I scout for Uhlans." In a moment he returned to me after having looked round the house. It was, I think, the first time the Chateau had known the scent of shag tobacco. A glow of heat rushed through me. I felt another man. "Better than the trenches," said Holmes, penetrating to my inmost thought. We sat for an hour and then I said, "Holmes, your mission." "Ah, I forgot. Come on." He led me into the thickening fog, and in a few minutes I was surprised to find myself in the British lines. The General emerged as we approached. Holmes saluted. "The CROWN PRINCE'S army is on the enemy's left, Sir. It is now in rapid retreat." The General shook him warmly by the hand. "But, Holmes," I said, as we went away, "we have done nothing. The lives of thousands of our men may depend on this." "My dear Watson," said Holmes, tapping the dottel of his pipe into his hand. "I used my eyes. In the house we visited the silver had almost all vanished. Inference--CROWN PRINCE. But two solid silver spoons had been left on the table. Inference--CROWN PRINCE in a hurry. Really, I am ashamed to explain a deduction which an intelligent child could have made." * * * * * KARL. Karl has emerged from the obscurity in which for years he has been wrapped and has become a topic of conversation, a link with the past, a popular alien enemy and a common nuisance. Once upon a time, when we were first told about Karl, those of us who didn't say that it was an extraordinary coincidence observed that the world is a small place after all; but now, when the narrator reaches that part of the story where he tells us that we "can imagine his surprise when"--I usually interrupt him to say that he must forgive me, but really I can_not_.