They were putting away the breakfast things, playfully scattering the wooden plates over the sand, when Innis, who had gone to the rear of the car, to look at the brake band, that needed a slight adjusting, called out:

"I say, Dick, they're after us!"

"Who?"

"Mr. Cameron's guards. There's a car coming over the desert behind us."

They all ran to look, and there, in the distance, could be seen a cloud of dust.

"Maybe it's a stage coach," suggested Paul.

Dick focussed a pair of field glasses on the cloud. Then he exclaimed:

"It's an auto, all right, and it must be after us, though I can't make out the kind of a car it is. Still, we'll take no chances. Come on, fellows, let's get a move on!"

They tumbled into the Last Word and were soon speeding off over the sand.