The sturdy Texan begged the privilege of smashing the door, and the old building resounded with the concussions of his blows. In a few moments he had beaten the door until it was split and ready to give way. A sort of fury seemed to possess him, and he soon smashed his way through the door and into the small room beyond.

Dick followed with the candle, the light of which showed them a human figure lying on the floor before them.

It was Professor Gunn, bound tightly with ropes wound and knotted about him and gagged in a manner that prevented him from making any outcry. However, he had managed to thump the floor with his feet when he heard the boys outside the door, and now his eyes were filled with an expression of untold relief and joy.

Dick lost not a moment in producing a knife and slashing at the cords which held the old man helpless. At the same time Brad removed the gag.

“Thank God!” mumbled Zenas weakly.

When they had freed him, he was unable to rise, so they lifted him between them and aided him from the room. Reaching the window by which they had entered, Brad sprang out, and Dick assisted Zenas in getting over the sill and lowering himself into the strong arms of the Texan.

Then Merriwell sprang out, drawing a deep breath of relief, for, regardless of the flight of the man who had fired the shot that extinguished the candle, he had feared another attack until all were clear of the building.

“Boys,” half sobbed the old professor, “I knew you would come! I knew you would rescue me somehow! But it seems as if I have been in the power of those villains for ages.”

“Where is Bunol?” asked Dick.

“Gone.”