Sometimes the expression of his countenance was deeply sorrowful, a proof that he suffered mentally, for his face could not be mistaken; but he did not speak, although at different times, however, they almost thought that words were about to issue from his lips. At all events, the poor creature was quite quiet and sad!

But was not his calm only apparent? Was not his sadness only the result of his seclusion? Nothing could yet be ascertained. Seeing only certain objects and in a limited space, always in contact with the colonists, to whom he would soon become accustomed, having no desires to satisfy, better fed, better clothed, it was natural that his physical nature should gradually improve; but was he penetrated with the sense of a new life? or rather, to employ a word which would be exactly applicable to him, was he not becoming tamed, like an animal in company with his master? This was an important question, which Cyrus Harding was anxious to answer, and yet he did not wish to treat his invalid roughly! Would he ever be a convalescent?

How the engineer observed him every moment! How he was on the watch for his soul, if one may use the expression! How he was ready to grasp it! The settlers followed with real sympathy all the phases of the cure undertaken by Harding. They aided him also in this work of humanity, and all, except perhaps the incredulous Pencroft, soon shared both his hope and his faith.

The calm of the stranger was deep, as has been said, and he even showed a sort of attachment for the engineer, whose influence he evidently felt. Cyrus Harding resolved then to try him, by transporting him to another scene, from that ocean which formerly his eyes had been accustomed to contemplate, to the border of the forest, which might perhaps recall those where so many years of his life had been passed!

"But," said Gideon Spilett, "can we hope that he will not escape, if once set at liberty?"

"The experiment must be tried," replied the engineer.

"Well!" said Pencroft. "When that fellow is outside, and feels the fresh air, he will be off as fast as his legs can carry him!"

"I do not think so," returned Harding.

"Let us try," said Spilett.

"We will try," replied the engineer.

This was on the 30th of October, and consequently the castaway of Tabor Island had been a prisoner in Granite House for nine days. It was warm, and a bright sun darted its rays on the island. Cyrus Harding and Pencroft went to the room occupied by the stranger, who was found lying near the window and gazing at the sky.

"Come, my friend," said the engineer to him.

The stranger rose immediately. His eyes were fixed on Cyrus Harding, and he followed him, while the sailor marched behind them, little confident as to the result of the experiment.

Arrived at the door, Harding and Pencroft made him take his place in the lift, while Neb, Herbert, and Gideon Spilett waited for them before Granite House. The lift descended, and in a few moments all were united on the beach.

The settlers went a short distance from the stranger, so as to leave him at liberty.

He then made a few steps toward the sea, and his look brightened with extreme animation, but he did not make the slightest attempt to escape. He was gazing at the little waves which, broken by the islet, rippled on the sand.

"This is only the sea," observed Gideon Spilett, "and possibly it does not inspire him with any wish to escape!"

"Yes," replied Harding, "we must take him to the plateau, on the border of the forest. There the experiment will be more conclusive."

"Besides, he could not run away," said Neb, "since the bridge is raised."

"Oh!" said Pencroft, "that isn't a man to be troubled by a stream like Creek Glycerine! He could cross it directly, at a single bound!"

"We shall soon see," Harding contented himself with replying, his eyes not quitting those of his patient.

The latter was then led towards the mouth of the Mercy, and all climbing the left bank of the river, reached Prospect Heights.

Arrived at the spot on which grew the first beautiful trees of the forest, their foliage slightly agitated by the breeze, the stranger appeared greedily to drink in the penetrating odor which filled the atmosphere, and a long sigh escaped from his chest.