"You are quite right, Dr. Petrie," said Meyerstein, turning to me. "The original owner, a member of the Younghusband Expedition, had been unable to open the chest. When opened at Christie's it proved to contain jewels and other valuables. It was a curious case, wasn't it, Lewison?" turning to his clerk.

"Very," agreed the other absently; then—"Have you endeavored to open this box, Mr. Smith?"

Nayland Smith shook his head grimly.

"From its weight," said Meyerstein, "I am inclined to think that the contents might prove of interest. With your permission I will endeavor to open it."

Nayland Smith, tugging reflectively at the lobe of his left ear, stood looking at the expert. Then—

"I do not care to attempt it at present," he said.

Meyerstein and his clerk stared at the speaker in surprise.

"But you would be mad," cried the former, "if you accepted an offer for the box, whilst ignorant of the nature of its contents."

"But I have invited no offer," said Smith. "I do not propose to sell."

Meyerstein adjusted his pince-nez again.