The Sergeant set the sheep upon the desk and looked at it fixedly for better than a minute. Having apparently studied out its mechanism, he pulled its head and it baa-ed. He pulled it once more, and nodded. Then he took up the crumpled letter and opened it. This was what he read, scrawled in a child's uncertain hand:-- "Deer Sante Claas--Pease wont yer bring me a sjeep wat bas. Aggie had won wonst. An Kate wants a dollie offul. In the reere 718 19th Street by the gas house. Your friend Will." The Sergeant read it over twice very carefully and glanced over the page at the sheep, as if taking stock and wondering why Kate's dollie was not there. Then he took the sheep and the letter and went over to the Captain's door. A gruff "Come in!" answered his knock. The Captain was pulling off his overcoat. He had just come in from his dinner. "Captain," said the Sergeant, "we found this in the pocket of Black Bill who is locked up for picking Mrs. ----'s pocket an hour ago. It is a clear case. He didn't even try to give them the slip," and he set the sheep upon the table and laid the letter beside it. "Black Bill?" said the Captain, with something of a start; "the dickens, you say!" And he took up the letter and read it. He was not a very good penman, was little Will. The Captain had even a harder time of it than the Sergeant had had making out his message. Three times he went over it, spelling out the words, and each time comparing it with the woolly exhibit that was part of the evidence, before he seemed to understand. Then it was in a voice that would have frightened little Will very much could he have heard it, and with a black look under his bushy eyebrows, that he bade the Sergeant "Fetch Bill up here!" One might almost have expected the little white lamb to have taken to its heels with fright at having raised such a storm, could it have run at all. But it showed no signs of fear. On the contrary it baa-ed quite lustily when the Sergeant should have been safely out of earshot. The hand of the Captain had accidentally rested upon the woolly head in putting down the letter. But the Sergeant was not out of earshot. He heard it and grinned. An iron door in the basement clanged and there were steps in the passageway. The doorman brought in Bill. He stood by the door, sullenly submissive. The Captain raised his head. It was in the shade. "So you are back, are you?" he said. The thief nodded. The Captain bent his brows upon him and said with sudden fierceness, "You couldn't keep honest a month, could you?" "They wouldn't let me. Who wants a thief in his pay? And the children were starving." It was said patiently enough, but it made the Captain wince all the same. They were his own words. But he did not give in so easily. "Starving?" he repeated harshly. "And that's why you got this, I suppose," and he pushed the sheep from under the newspaper that had fallen upon it by accident and covered it up.