THREE:"Young man," said Shorty, solemnly, as he paid for his purchases, "the condition o' your health requires you not to try to be funny. It's one o' the dangerousest things in the army. You're exposed to a great many complaints down here, but nothin' 'll send you to the hospital as suddenly as bein' funny.""Well, you needn't learn all of it," said Si. "It's enough for you to know that I command you. That's the A B C of the business, and all you need know. A man in the army gits into trouble offen by knowin' too much. You git it well into your craws that I command you, and that you've got to do just as I say, and I'll do the rest o' the knowin' that you need."