A fight of even more than common violence was raging in an extreme corner of the prison, and so closely packed were the prisoners that with each advance of one combatant and retreat of the other, the whole jostled crowd swayed in a sort of rhythm, from end to end, from side to side. But they swayed, fighting to keep their feet, fighting even with their teeth, and above the din and noise of their hard breathing, the clank of their chains, and their imprecations, there rose now and then a wild sobbing cry for mercy, or an inhuman shriek, stifled as soon as uttered, which showed that a man had gone down beneath the stamping feet. Missiles, too, were flung across the prison, even to the foul earth gathered from the floor, and since none knew from what quarter they were flung, heads were battered against heads in the effort to avoid them. And all these things happened in the blackest darkness.

For two hours Trench stood in that black prison ringing with noise, rank with heat, and there were eight hours to follow before the door would be opened and he could stumble into the clean air and fall asleep in the zareeba. He stood upon tiptoe that he might lift his head above his fellows, but even so he could barely breathe, and the air he breathed was moist and sour. His throat was parched, his tongue was swollen in his mouth and stringy like a dried fig. It seemed to him that the imagination of God could devise no worse hell than the House of Stone on an August night in Omdurman. It could add fire, he thought, but only fire.

"If I were to fall!" he cried, and as he spoke his hell was made perfect, for the door was opened. Idris es Saier appeared in the opening.

"Make room," he cried, "make room," and he threw fire among the prisoners to drive them from the door. Lighted tufts of dried grass blazed in the darkness and fell upon the bodies of the prisoners. The captives were so crowded they could not avoid the missiles; in places, even, they could not lift their hands to dislodge them from their shoulders or their heads.

"Make room," cried Idris. The whips of his fellow-gaolers enforced his command, the lashes fell upon all within reach, and a little space was cleared within the door. Into that space a man was flung and the door closed again.

Trench was standing close to the door; in the dim twilight which came through the doorway he had caught a glimpse of the new prisoner, a man heavily ironed, slight of figure, and bent with suffering.

"He will fall," he said, "he will fall to-night. God! if I were to!" and suddenly the crowd swayed against him, and the curses rose louder and shriller than before.

The new prisoner was the cause. He clung to the door with his face against the panels, through the chinks of which actual air might come. Those behind plucked him from his vantage, jostled him, pressed him backwards that they might take his place. He was driven as a wedge is driven by a hammer, between this prisoner and that, until at last he was flung against Colonel Trench.

The ordinary instincts of kindness could not live in the nightmare of that prison house. In the daytime, outside, the prisoners were often drawn together by their bond of a common misery; the faithful as often as not helped the infidel. But to fight for life during the hours of darkness without pity or cessation was the one creed and practice of the House of Stone. Colonel Trench was like the rest. The need to live, if only long enough to drink one drop of water in the morning and draw one clean mouthful of fresh air, was more than uppermost in his mind. It was the only thought he had.

"Back!" he cried violently, "back, or I strike!"—and, as he wrestled to lift his arm above his head that he might strike the better, he heard the man who had been flung against him incoherently babbling English.