"If I can't set up some kind of apparatus to distil that into gas-engine fuel, I'm no engineer, that's all," said Stern to himself. "All in time, all in time--but first I must take thought how to raise the old Pauillac from the sea." Already the newcomers' lungs had become absolutely accustomed to the condensed air, so that they breathed with entire ease and comfort. They even found this air unusually stimulating and revivifying, because of its greater amount of oxygen to the cubic unit; and thus they were able to endure greater exertions than formerly on the surface of the earth. The air never grew foul. A steady current set in the direction that Stern's pocket-compass indicated as north. The heat no longer oppressed them; they were even getting used to the constant fog and to the darkness; and already could see far better than a fortnight previously, when they had arrived. Stern never could have believed he could learn to do without sunlight and starlight and the free winds of heaven; but now he found that even these were not essential to human life. Certain phenomena excited his scientific interest very keenly--such as the source of the great gas-flare in the village, the rhythmic variations in the air-current, the small but well-marked tides on the sea, the diminished force of gravitation--indicating a very great depth, indeed, toward the center of the earth--the greater density of the seawater, the heavy vaporization, certain singular rock-strata of the cliffs near the village, and many other matters. All these Stern promised himself he would investigate as soon as time and strength allowed. The village itself, he soon determined, was about half a mile long and perhaps a quarter-mile across, measuring from the fortified gate directly back to the huge flame near the dungeon and the place of bones. He found, incidentally, that more than one hundred and sixty freshly boiled and headless skeletons were now dangling from the iron rods, but wisely held his peace concerning them. Nor did the patriarch volunteer any information about the loss of life of the Folk in the battle. Stern estimated there were now some fifteen hundred people, men, women and children, still remaining in the community; but since he knew nothing of their number when he had arrived, he could not form more than a rough idea of the total slaughter. He found, however, on one of his excursions outside the walls--which at a distance of two hundred and fifty yards from the sea stretched in a vast irregular arc abutting at each end against the cliff--the graveyard of the Folk. This awesome and peculiar place consisted of heaps of smooth black boulders piled upon the dead, each heap surmounted by a stone with some crude emblem cut upon it, such as a circle, a square, a cluster of dots, even the rude figure of a bird, a fish, a tortoise, and so on.