He bade the men good-night and wished them a Merry Christmas, closed the doors, locked them tight, and looked his property over. It was worth being proud of, make no mistake. It was all any man need wish for. It was well stocked and in prime condition. The house, in the cellar of which his smithy stood, was mainly let in lodgings. On the first floor, raised just far enough above the street to give his customers a fair passage out, there was a saloon and eating-room. Back of these were Billy's own rooms, two nice big rooms where his mother took care of him and cooked his meals and washed his clothes and aired his bed as only good old mothers can. Over this floor were two others, let, as I have said, in lodgings--to whom, who knows? Who ever knows to whom lodgings are let in this big, crowded city? Billy finished his dinner and drew up his chair and one for his mother by the stove, and filled his huge mug with beer, and his huge pipe with tobacco, and talked it all over with his mother. She was a fine woman, was Billy's mother, and she drew a straight, steady rein over her big, burly, good-natured boy. She was Billy's best friend, and he knew it, and when she told him she would stand by and help him, and save for him and look out after him, Billy reached forth his brawny arm, and drew her over on his knee and danced her up and down, smoothing back her gray hair and kissing her old cheeks as if she were a baby. Then, when the clock struck nine, she got up to wash the dishes, and Billy took his lantern to go down among his forges again. Not that he had anything particular to do, though there never was a time when Billy couldn't find something, but the novelty of owning a business was strong with him, and he wanted to hammer just for the fun of hammering. He descended into the cellar through a side-door which opened from the back hall upon a short ladder. The street doors were barred and bolted. He set his lantern on the ladder steps and lit an oil lamp that hung over his anvil, picked up his iron and his hammer, thrust the one into the coals and laid the other on his anvil, and blew away. Oh, what an arm that was of Billy's! How it made the bellows bulge and the wind roar up the great chimney! How the black coals reddened and flamed and blazed! How the iron glowed and whitened with the heat, and when Billy drew his great hammer down upon it with a hoarse grunt accompanying each blow as if to give it effectiveness, how the sparks scampered about in a furious effort to escape! [Illustration: OH, WHAT AN ARM WAS THAT OF BILLY'S!]