In the morning the other little Bunkers were told of the funny thing that had happened to Mun Bun in the night. The little fellow himself knew nothing about it.
"He must have walked in his sleep," said his mother, "though I never knew him to do that before."
And that is probably what happened.
Mun Bun, not used to sleeping in moving trains, had probably twisted and turned in the night, and, being restless, he had gotten out of the bed where he was with his father. If he was awake he did not remember it. He must have toddled down the aisle of the car, all by himself, and then have crawled into the berth with the strange man. The latter was not awakened until he had his queer dream about his pet dog, and then he found Mun Bun.
"And just in time, too," said Uncle Fred, as they were all laughing about it at breakfast the next morning. "I wouldn't have liked to get all the passengers awake to find a lost boy. After this, Mun Bun, we'll have to put a hobble on you."
"What's a hobble?" asked Russ.
"Is it an Indian?" Violet wanted to know. She was not going to let Russ get ahead of her with questions.
"No, a hobble is something we put on horses to keep them from straying away," said the ranchman. "It's a rope with which we tie them."
"Do horses walk in their sleep?" Violet, in wonder, asked.
"I don't believe so," answered Uncle Fred. "I never saw any, and we have a lot out at Three Star."