He received no reply. The scraping went on. Something was being thrust into the gaping crack which stood an inch wide beneath the door. Suddenly the noise ceased, followed by a long pause. Then, in the strong draught under the door, a puff of oil smoke belched into the room, and its nauseous reek set Chepstow coughing. His cough brought an answering peal of brutal laughter from beyond the door, and some one shouted to his comrades—
"Bully fer you, bo'! Draw 'em! Draw 'em like badgers. Smoke 'em out like gophers."
The pungent smoke belched into the room, and the man darted from the door.
"Quick!" he cried. "Wet rags! A blanket!"
Betty sprang to his assistance. The room was rapidly filling with smoke, which stung their eyes and set them choking. A blanket was snatched off the wounded strike-leader, but the process of saturating it was slow. They had only one barrel of water, and dared not waste it by plunging the blanket into it. So they were forced to resort to the use of a dipper. At last it was ready and the man crushed it down at the foot of the door, and stamped it tight with his foot.
But it had taken too much time to set in place. The room was dense with a fog of smoke that set eyes streaming and throats gasping. In reckless despair the man sprang at one of the windows and began to tear down the carefully-built barricade.
But now the cunning of the besiegers was displayed. As the last of the barricade was removed Chepstow discovered that the cotton covering of the window was smouldering. He tore it out to let in the fresh air, but only to release a pile of smouldering oil rags, which had been placed on the thickness of the wall, and set it tumbling into the room. The window was barricaded on the outside!
The smoke became unbearable now, and the two prisoners set to work to trample the smouldering rags out. It was while they were thus occupied that a fresh disaster occurred. There was a terrific clatter at the stove, and a cloud of smoke and soot practically put the place in darkness. Nor did it need the sound of scrambling feet on the roof to tell those below what had happened. The strikers, by removing the topmost joint of the pipe, where it protruded through the roof, had been able, by the aid of a long stick, to dislodge the rest of the pipe and send it crashing to the floor. It was a master-stroke of diabolical cunning, for now, added to the smoke and soot, the sulphurous fumes of the blazing stove rendered the conditions of the room beyond further endurance.
Half blinded and gasping Chepstow sprang at the table and seized a rifle. Betty had dropped into a chair choking. The strike-leader lay moaning, trying to shut out the smoke with his one remaining blanket.
"Come on, Betty," shouted the man, in a frenzy of rage. "You've got your revolver. I'm going to open the door, and may God Almighty have mercy on the soul of the man who tries to stop us!"