“The men are on the way, sir.”

They were! Ten thousand cavalrymen with guidons streaming from their lances! A thousand automobiles were sweeping with them in companies of twenty—each machine packed with sturdy infantrymen, their battle standards flying from speeding cars.

The first division of cavalry which Angela had summoned rescued Billy’s hard pressed men, wiped out his opponents, and reached the shelter of the porte-cochère before Waldron’s guard inside realized their presence.

Supposing the Imperial troops had answered the summons the big doors were opened. The entrance was forced before Waldron saw they wore the felt hats of the United States Army.

He slammed the massive doors of the library, dragged Virginia through another exit and reached the upper story by the rear stairway.

The Captain held the lower floor. Waldron’s guard with their rifles and automatics commanded the landings of the two stairs. Vassar found his men holding a council of war when he leaped from his car and entered the blood-stained doorway of the banquet hall.

Vassar had just formed his men in solid mass to rush the stairway and batter in the door above, when the big elevator shot down the shaft, showing Waldron with Virginia under guard. In a flash he recalled that the entrance from the Drive passed through the hill to this shaft. If Waldron could reach the pier he might yet escape on his yacht.

Vassar rushed to the window and looked toward the river.

The yacht lay beside the wharf, her portholes gleaming, her funnels belching flame and smoke. The engineer had gotten the signal. He was using oil to force the steam.

With a fierce cry of rage Vassar called to Billy and a dozen men leaped after them.