"Now for the horses!" cried Billie as the Mexicans threw themselves upon the ground.

They sprang to their horses and dashed away down the valley.

They were not discovered until they had cleared the shelter of the trees and then a volley was fired after them. The bullets sang all around them, but they escaped unhurt, and before another volley they were out of range.

"It's a good thing for us that they have no cavalry," said Brooks as they sped along.

"Sure is," was the response, "and I hope they don't succeed in getting word ahead of us."

"We'll fix that," said Brooks. "We cross the railroad just at the foot of the hill and I'll climb up and cut the telegraph wires."

"They may have sent word already."

"Hardly. They may have tried to, but it's dollars to doughnuts that there was nobody at Joachin or Rio Blanco to receive it. The nearest night operator, I imagine, is at Piedras Negras."

"They may send a force from there to head us off," suggested Billie.

"That's so; but I'm not sure whether Piedras Negras is held by the Carranza or the Huerta forces."