“Eureka!” cried Max.

“What it is?”

“What does it mean?”

“Who are you signaling?”

“What does it mean?”

“Is that cavalry?”

These, and a dozen questions of like nature were shot at Mustang Max, but the guide laughed gleefully.

“Cavalry be blessed,” he said. “No, boys, I was signaling Frank Reade and his Steam Horse, and I’ve got my answer. I’d rather have him than any company of cavalry.”

“So would we.”

“He’s a terror.”