"On your car?" Jelf stepped back a pace and looked at the other with very flattering interest and admiration. "Not your car! Have you a car?"

Bones said he had a car, and explained it at length. He even waxed as enthusiastic about his machine as had Mr. Jelf on the subject of the lamp that never went out. And Jelf agreed with everything that Bones said. Apparently he was personally acquainted with the Carter-Crispley car. He had, so to speak, grown up with it. He knew its good points and none of its bad points. He thought the man who chose a car like that must have genius beyond the ordinary. Bones agreed. Bones had reached the conclusion that he had been mistaken about Jelf, and that possibly age had sobered him (it was nearly six months since he had perpetrated his last libel). They parted the best of friends. He had agreed to attend a demonstration at the workshop early the following morning, and Jelf, who was working on a ten per cent. commission basis, and had already drawn a hundred on account from the vendors, was there to meet him.

In truth it was a noble lamp—very much like other motor lamps, except that the bulb was, or apparently was, embedded in solid glass. Its principal virtue lay in the fact that it carried its own accumulator, which had to be charged weekly, or the lamp forfeited its title.

Mr. Jelf explained, with the adeptness of an expert, how the lamp was controlled from the dashboard, and how splendid it was to have a light which was independent of the engine of the car or of faulty accumulators, and Bones agreed to try the lamp for a week. He did more than this: he half promised to float a company for its manufacture, and gave Mr. Jelf fifty pounds on account of possible royalties and commission, whereupon Mr. Jelf faded from the picture, and from that moment ceased to take the slightest interest in a valuable article which should have been more valuable by reason of the fact that it bore his name.

Three days later Hamilton, walking to business, was overtaken by a beautiful blue Carter-Crispley, ornamented, it seemed from a distance, by two immense bosses of burnished silver. On closer examination they proved to be nothing more remarkable than examples of the Tibbett-Jelf Lamp.

"Yes," said Bones airily, "that's the lamp, dear old thing. Invented in leisure hours by self and Jelf. Step in, and I'll explain."

"Where do I step in," asked Hamilton, wilfully dense—"into the car or into the lamp?"

Bones patiently smiled and waved him with a gesture to a seat by his side. His explanation was disjointed and scarcely informative; for Bones had yet to learn the finesse of driving, and he had a trick of thinking aloud.

"This lamp, old thing," he said, "never goes out—you silly old josser, why did you step in front of me? Goodness gracious! I nearly cut short your naughty old life"—(this to one unhappy pedestrian whom Bones had unexpectedly met on the wrong side of the road)—"never goes out, dear old thing. It's out now, I admit, but it's not in working order—Gosh! That was a narrow escape! Nobody but a skilled driver, old Hamilton, could have missed that lamp-post. It is going to create a sensation; there's nothing like it on the market—whoop!"

He brought the car to a standstill with a jerk and within half an inch of a City policeman who was directing the traffic with his back turned to Bones, blissfully unconscious of the doom which almost overcame him.