"Just that. Only, it's no—yarn."

Steve had no responsive smile. His eyes were serious with a conviction that promptly changed the other's attitude. He searched an inner pocket and drew forth a neatly tied packet. This he unfastened while the other watched him curiously.

The wrappings removed, a bunch of something that looked rather like dried seaweed lay revealed. And a curious sweet odour made itself apparent on the still air.

Steve passed it across to his companion without comment. And Ross took it, and, for some thoughtful moments, sat gazing upon the strange product of the hidden Unaga. Then he gingerly picked up some of the shrivelled weed for a closer examination, and, a moment later, pressed it against his nose and inhaled deeply. As he did so, Steve, watching him, beheld a sudden excited lighting of his eyes.

"You know it, Doc," he said. "I don't need to ask."

Steve spoke quite quietly, and the other continued to contemplate the stuff in the intent, absorbed fashion of a suddenly startled scientific mind. At last he withdrew his fascinated gaze.

"'Adresol!'" he exclaimed. And his tone was thrilling with the joy of the enthusiast.

"Yes."

"You knew it?"

The Scotsman's sharp question was accompanied by the searching of astonished eyes.