“Kidd,” he said, “seems a peculiarly fitting name for a thief.”

“Now,” said Stolburst, not minding the interruption, “I want you to find this man, and make him give up the stone.”

“Does he know it was stolen?” asked the detective.

“I believe not.”

“If he does,” remarked Burt, “he will refuse to give it up. By the way, is the man in this part of the country?”

“I think both he and his fellow servant, Sam Henry, are here in New York. It was here I engaged them before making my last trip into Africa.”

“How am I to know the pair?”

“I have provided for that.”

Stolburst took from his pocket two photographs, which he handed to the detective.

Burt looked at the photographs attentively.