The next moment the balloon gave a tremendous bound. I know that I nearly fell upon my face, and Angela was thrown violently into the bottom of the car. For an appreciable interval not one of us realised that Jim had slipped overboard.

"The trade's got us," said the old man. "We shall just make them dunes."

"Oh, thank God!" exclaimed Angela.

By the tone of her voice, by the smile parting her lips, I could see that she did not know what had happened. Terror had dulled all faculties save the one overmastering instinct of self-preservation. Thorpe was about to speak, but Ajax caught his eye and with a gesture silenced him. Once more the balloon began to fall----

* * * * *

We were thrown out upon the dunes. Some of us were badly bruised. When we staggered to our feet, Angela said quickly--

"Why, where's Jim?"

Thorpe told her; let us give him credit for that. When he had finished, he put out his hand, but she turned from him to Ajax.

"Come," she said.

She ran past us towards the beach, instinctively taking the right direction. As she ran she called shrilly: "Jim--Jim!"