"Pretty fair, sir," replied the airman, with a grin. "I don't mind twenty thousand feet, so I don't think Mill Down chimney should worry me much."

"The two things are not quite alike," said a quiet voice from the window, and everyone turned to see Peter Benton standing there, with his hands in his pockets. "I've got a shocking head for height myself, but I never noticed it when I was flying."

"I think I will chance it," answered Seymour with a slight drawl, and having recently been supplied with Madge Saunderson's version of the dog accident his tone was understandable.

"Let's all go down and see he doesn't cheat," cried one of the girls, and there was a general exodus of the younger members of the party for wraps. Only Sybil, with troubled eyes, stood motionless, staring out into the brilliant moonlight; while Peter, lighting a cigarette, picked up an illustrated paper and glanced through it. And to the Doctor, watching the scene with his shrewd grey eyes, the only person in the room who seemed ill at ease was the flying-man himself.

"What would the world be like," he remarked to the Soldier, "if woman lost her power to cause man to make a fool of himself?"

"Good Lord! my dear fellow," said the other, "it's only an after-dinner prank. That boy will do it on his head."

"I dare say he will," returned the Doctor. "But it's cheap, and he knows it." He rose. "Shall we go down and witness the feat?"

"Why not?" answered the Soldier. "It may stop Deering telling us again about his new play."

Half an hour later the whole house-party were grouped round the base of the chimney. Close to, it seemed to have grown in height, till it towered above them into the starlit sky. The girls were chattering gaily, standing around Seymour—except for Sybil, who stood a little apart; while the two Eton boys were busily engaged hi deciding on the correct method of ascent. Seated on a pile of bricks sat the four men, more occupied with a never-ending political argument than the performance of climbing the chimney; while in the background, standing by himself, was Peter Benton, with a twisted, bitter smile on his face.

He was under no delusions as to why the bet had been made: just a further episode, thought out by a spiteful girl, to show his conduct that afternoon in a blacker light. On the surface, at any rate, it was more dangerous to the ordinary man to climb this chimney than to go into the mill-stream. And this was being done merely for sport—as a prank; while the other might have saved a dog's life.