With a howl, the insurrectos charged on the hut. The lust of gold was in their veins, and they minded the volley poured into them by the defenders no more than if it had been so much rain. Several of them fell, but it seemed to make no difference to the others. They charged right up to the very doors of the place. Some of them even tore at the walls as if they imagined they could demolish them and get at the gringo gold.

"Dot is vot goldt does for mens," philosophically remarked the German, as he gazed at the onrush, firing methodically at the same time.

Jack, Ralph, and Walt were at one of the windows, while the professor and Coyote Pete defended the other. During the mad rush for the office, they all did considerable execution, without, of course, any cost to themselves. The Mexicans, to be sure, returned the fire furiously, but their bullets "pinged" harmlessly against the steel shutters, or buried themselves in the thick, wooden walls.

Suddenly there came an angry shout from some one evidently in authority among the insurrectos. Instantly the attack melted away, the retreating men dragging their wounded with them. It was Jack's first sight of real warfare, and it made his blood, as well as that of the others, run cold.

"Now what are they up to?" wondered Buck, as this sudden cessation of activities came.

"Search me," rejoined Coyote Pete, "but it's some deviltry, you can bet on that—that voice was Ramon's. He's got a plan in his head to get us out of here."

"Well, he'll have a man's-sized job on his hands," rejoined Buck, calmly reloading the magazine of his rifle and running a cleaning rod through the foul barrel.

The others employed their time in the same manner. Thus they waited for what seemed an interminable age. Still there was no sign of the Mexicans. The yard without was empty of life.

"If they don't show up in a few minutes, what say if we open the door and make a rush for it?" asked Jack.

"As good an idea as any," rejoined Buck, "but what I would like to know right now is what they can be doing."