enhor Canalejas," said Bell politely, "I am about to go and steal an airplane to take what I have learned to my companion for transmission. If you wish to go with me...."

Canalejas stared for the fraction of a second. Then he said quietly:

"But of course."

He turned to retrace his steps. Bell turned to the girl.

"If you are wise," he said gently, "you will go and give the alarm. If you are kind, you will delay it as much as you dare."

She regarded him in agonized doubt for a moment, and nodded. She fled.

"Now," said Bell casually, "I think we had better hasten. And I hope, Senhor Canalejas, that you have a revolver. We will need one. Mine has been ruined."

Without a word, the white-haired man drew out a weapon and offered it to him.

"I had intended," he said very calmly, "to kill the Senhor Ribiera. His last demand is for my daughter."

They went swiftly. The plane Bell had seen alight some fifteen or twenty minutes before was just being approached by languid mechanics. It was, of course, still warm. Canalejas shouted and waved his arm imperiously. It is probable that he gave the impression of a man returning for some forgotten thing, left in the cockpit of the plane.