Tanar had reached the opposite edge of the well, only a few yards distant, when Bohar nodded and there was a roar of musketry and a flash of flame accompanied by so dense a pall of black smoke that for an instant the figure of the Sarian was entirely obliterated from view.

Stellara, wide-eyed and trembling with pain and horror, tried to penetrate the smoke cloud with her frightened eyes. Quickly it lifted, revealing no sign of Tanar.

“Well done,” cried Bohar to his men. “Either you blew him all to pieces, or his body fell into the hole,” and going to the edge of the opening he looked down, but it was very dark there and he saw nothing. “Wherever he is, at least he is dead,” said Bohar. “I should like to have crushed his life out with my own hands, but at least he is dead by my command and the blow that he struck me is wiped out, as Bohar wipes out the blows of all his enemies.”

As the Korsars resumed the march toward the ocean, Stellara walked among them with bent head and moist, unseeing eyes. Often she stumbled and each time she was jerked roughly to her feet and shaken, at the same time being admonished in hoarse tones to watch her footing.

By the time they reached the seashore Stellara was sick with a high fever and she lay in the camp of the Korsars for what may have been a day or a month, too sick to move, while Bohar and his men felled timbers, hewed planks and constructed a boat to carry them to the distant shores of Korsar.

Rushing forward to rescue Stellara from the clutches of Bohar, Tanar’s mind and eyes had been fixed on nothing but the figure of the girl. He had not seen the opening in the ground and at the instant that the Korsars fired their harquebuses he had stepped unwittingly into the opening and plunged to the water far below.

The fall had not hurt him. It had not even stunned him and when he came to the surface he saw before him a quiet stream moving gently through an opening in the limestone wall about him. Beyond the opening was a luminous cavern and into this Tanar swam, clambering to its rocky floor the moment that he had found a low place in the bank of the stream. Looking about him he found himself in a large cavern, the walls of which shone luminously, so considerable was their content of phosphorus.

There was a great deal of rubbish on the floor of the cave—the bones of animals and men, broken weapons, bits of hide. It might have been the dumping ground of some grewsome charnal house.

The Sarian walked back to the opening through which the little stream had borne him into the grotto, but a careful investigation revealed no avenue of escape in this direction, although he reentered the stream and swam into the bottom of the well where he found the walls worn so smooth by the long continued action of falling water that they gave no slightest indication of handhold or foothold.

Then slowly he made a circuit of the outer walls of the grotto, but only where the stream passed out at its far end was there any opening—a rough archway that rose some six feet above the surface of the underground stream.