"Watch the camp?"
"Yes."
"For what reason?"
"Merely as a precaution."
"I'll attend to that. I want all of you to get after Tad and Stacy. We don't care about the camp particularly, when compared with two human lives."
The smoke was rolling over them in such dense clouds that the camp was wholly obscured from view until they were upon it.
"Quick! Get the horses before they break away!" commanded the guide.
"I can't find them!" shouted Ned, who had bounded on ahead and disappeared in the great suffocating cloud.
Walter was only a few steps behind him, both boys groping, blinking and coughing as the smoke got into eyes and lungs.
"Lie down when it gets stronger than you can stand. There's always a current of fresh air near the ground," called the guide.