"Look out, boys," said Perkins in a whisper; "here comes Kendall."

The boys vanished as if by magic. Guy peeled off his coat, took the brush from the hands of the soldier, and, striking up a whistle, proceeded to rub down his horse; the others went, some to examine their bridles and some to give their nags a good looking-over, and not another word was said. Captain Kendall came in and walked the whole length of the stable without any remark and then went out; but the moment he disappeared the soldier took the brush, and the young officers gathered about Guy again. Not a word was said about the joke they had played upon Captain Kendall. Such scenes were an every-day occurrence.

"What was in that letter he gave you?" asked Perkins.

"That letter won't do me much good," replied Guy, with a discontented look; "the Colonel's got it and I guess he means to keep it."

"Not if it is going to save your life," said one of his roommates.

"But how is it going to do that? I must first fall into the hands of the Sioux, and I don't want to do that, I bet you. I have not forgotten those men that they killed."

"I will tell you what let's do," said Perkins. "Let's go and see Cyrus. He will know whether or not there is anything to it."

This the boys decided to do; and when the soldier had finished grooming the horse, they came out and turned their steps toward the guide's headquarters.