“It is cold here on the marshes, monsieur,” remarked the driver, his cigarette between his lips. “This mist, too, is puzzling. But it is nearly always like this at night. That is why nobody lives about here.”

“Is it quite deserted?”

“Yes, except for a few shepherds, and they live up north at the foot of the hills.”

For some ten minutes or so they kept on, but Hugh had suddenly become very watchful of the driver.

Presently the man exclaimed in French:

“I do not feel very well!”

“What is the matter?” asked Hugh in alarm. “You must not be taken ill here—so far from anywhere!”

But the man was evidently unwell, for he pulled up the car.

“Oh! my head!” he cried, putting both hands to his brow as the cigarette dropped from his lips. “My head! It seems as if it will burst! And—and I can’t see! Everything is going round—round! Where—where am I?”

“You are all right, my friend. Get into the back of the car and rest. You will be yourself very quickly.”