"Gentlemen," I said gravely, when we had gone about twenty yards, "I did not think this of you." "And why not?" replied Marcel. "Could we have done otherwise after the delicate attentions that you have received from Colonel Schwarzfelder. We were the larger party, and therefore it was our duty, under the circumstances, to give way to the smaller. Is that not so, Moore?" "Certainly," replied Moore. "We did our duty." I looked at them questioningly, and Marcel's eye began to twinkle. "Oh, you have not heard of the billet-doux that Schwarzfelder has written you?" he asked. "What are you talking about?" I replied. "It was done in the most perfect manner," said Moore; "I wish that it had come for me." "I refuse to go a step farther unless you tell me what you are talking about," I said, and I stopped short. They could have carried me on only by dragging me, and that would have looked undignified. "Suppose we let him have the letter,--Schwarzfelder's masterly production," said Marcel. "Yes, let him see it," said Vivian. Marcel accordingly took from his waistcoat pocket, an envelope with a broken seal, superscribed in a large heavy hand, "To Captain, the Honorable Charles Montague." I put it to my nose, and it smelled of both tobacco and wine. "But think of its contents," said Marcel. I opened it, and stared at the writing, of which I could not read a word. It was in German. The others burst into laughter. "That billet-doux," said Marcel, "is a challenge from your dear friend, Schwarzfelder. It seems that you did him a wrong this morning, or at least he thinks so, and off he rushed to his headquarters so blindingly angry that he must challenge you at once. He thinks of me as your best friend, and, still mad with anger, he forgets himself so far as to write the body of the letter in German, and also to ignore the use of a second for himself. But Belfort has set all of that right. Now it seems that fate won't let you fight Belfort; but I don't see how you can keep from meeting Schwarzfelder. Lieutenant Melville, if I had your quarrelsome disposition, I certainly should expect to die on the field of honor before I was turned twenty-five." Then they laughed again, enjoying my plight and vexation. "Belfort is at any rate a gentleman," I said; "but Schwarzfelder is at least three-fourths ruffian, and I think that it would be a disgrace to meet him." "But you cannot refuse on that account," said Catron, gravely, "these men seem bent upon persecuting you, Melville, and you will have to put a stop to it with either sword or pistol. Suppose that we go to your quarters and discuss it." I was willing, and ten minutes later we were around a table in our room, talking over the situation. Marcel had ordered wine from the commissariat, and the glasses were filled by the orderly, Waters, who was silent, and, as usual, apparently respectful.