Don Luis's joy contained no surprise. He knew so well that this was bound to happen!

Davanne turned round and cried:

"That's the one, isn't it?"

"Yes, go straight for them."

The airship dipped through space and caught up the car almost at once. Then Davanne slowed his engine and kept at six hundred feet above the car and a little way behind.

From here they made out all the details. The driver was seated on the left. He wore a gray cap with a black peak. It was one of the deep-yellow taxis of the Compagnie des Comètes. It was the taxi which they were pursuing. And Florence was inside with her abductor.

"At last," thought Don Luis, "I have them!"

They flew for some time, keeping the same distance.

Davanne waited for a signal which Don Luis was in no hurry to give. He was revelling in the sensation of his power, with a force made up of mingled pride, hatred, and cruelty. He was indeed the eagle hovering overhead with its talons itching to rend live flesh. Escaped from the cage in which he had been imprisoned, released from the bonds that fastened him, he had come all the way at full flight and was ready to swoop upon the helpless prey.

He lifted himself in his seat and gave Davanne his instructions: