"Get ready for trouble," ordered Grace Harlowe sharply to Elfreda Briggs, at the same time raising her right hand above her head, a signal that Emma, Anne and Nora understood. It was the Overland Riders' signal of distress and meant that all hands should instantly prepare to defend themselves.

All the girls expected to see Hippy's revolver out of its holster after that insult. Instead, the desert rider was violently yanked from his saddle and stood on his head in the sand. So quick had Lieutenant Wingate been in unhorsing the man that the ugly visitor had not even time to draw his weapon.

Up to this juncture, Hi Lang had remained in the water hole, industriously dipping up water, at the same time keeping a wary eye on the progress of affairs above. He did not think best to take a hand until hostilities actually began, knowing that were he to spring out and draw his weapon, the desert riders would shoot before his revolver was out of its holster.

Peering out cautiously he saw that every man of the desert riders was resting a careless hand on the butt of his revolver. At the same time Hi observed something else in the opposite direction. Grace Harlowe and Elfreda Briggs had stepped up close to the water hole and each was standing with a hand on her hip.

The situation was resting on a hair trigger, and, even in the tenseness of the moment, Hi Lang found himself keenly interested in what he saw—the Overland Riders in action.

The leader of the newcomers sprang to his feet raging. Hippy Wingate, now close to the man, pushed the flat of his hand against the fellow's face.

"Get off my desert, you imitation rough-neck," invited Hippy sweetly. In the same breath he added in a savage tone: "Keep your hand away from that gun!" emphasizing his command by thrusting the muzzle of his own revolver against the desert rider's stomach.

The visitor's back was toward his companions, so that they did not get the full import of what was taking place, but they looked their amazement when they saw their leader turn his back on Hippy. They did not know that he was doing this in obedience to Lieutenant Wingate's order, nor that the leader's revolver at that moment was in Hippy's hand, Hippy having slipped it from its holster while still pressing his own weapon against the man who had ducked him.

"I told you to get off my desert," said Hippy, incisively. "I've changed my mind. I'm going to kick you off!"

Lieutenant Wingate retreated a step, sprang clear of the ground, and with a kick that had sent many a ball over the goal, he kicked the desert leader into the water hole. Hi Lang was not so considerate. As the fellow scrambled to his feet, Hi laid him flat on his back with a blow between the eyes that instantly put the fellow to sleep.