"Doesn't the odor give you any idea?" Mr. Emery asked with a smile.

"None except that the sooner we get away the more comfortable I shall feel."

"When I tell you that we are likely to find as the cause of your discomfort something nearly as precious as gold, it may be a trifle more bearable."

Both Neal and Teddy looked perplexed, and the latter said laughingly:

"It is strong enough to be worth a good deal; but do you really mean what you say, sir?"

"Every word. Mr. Walters thinks he can find ambergris which has been washed up on the rocks, and that is quoted at ten dollars per ounce. Now you boys have been at school long enough to know exactly why it is so valuable."

"I have heard of it as being the base of the finest perfumes," Neal said slowly; "but that must surely be a mistake if it smells anything like this," and he did violence to his stomach by inhaling a long breath of the disagreeably laden air.

"It is true, nevertheless. Ambergris is believed to be the product of a sort of ulcer or cancer which has formed in the bowels of a whale. After a certain length of time, or because a cure has been wrought by change of feeding place, the mass is dislodged. It floats, and is often found far out to sea; but more particularly among the cays in the Turks islands. It is the foundation of nearly every perfume, and in ancient times was used for spicing wine."

During this conversation the boat had been lowered, and, with Mr. Walters as steersman, was being pulled toward the land. Now Neal and Teddy were sorry they had not accompanied the sailing master; but it was too late for regrets, and the odor did not seem to be nearly as disagreeable since they knew from what it proceeded.

"Never mind how much the stuff is worth," Teddy said, as he and Neal leaned over the rail in company with Jake, who had come on deck to ascertain why the yacht had been brought to a standstill, "it isn't a nice thing to smell of, and I shall remember this afternoon whenever I see perfume."