'Well, sir, I got into a great furze-croft, full of deads (those are the earth-heaps they throw out of the shafts), where no man in his senses dare go forward or back in the dark, for fear of the shafts; and the wind and the snow were so sharp, they made me quite stupid and sleepy; and I knew if I stayed there I should be frozen to death, and if I went on, there were the shafts ready to swallow me up: and what with fear and the howling and raging of the wind, I was like a mazed boy, sir. And I knelt down and tried to pray; and then, in one moment, all the evil things I'd ever done, and the bad words and thoughts that ever crossed me, rose up together as clear as one page of a print-book; and I knew that if I died that minute I should go to hell. And then I saw through the ground all the water in the shafts glaring like blood, and all the sides of the shafts fierce red-hot, as if hell was coming up. And I heard the knockers knocking, or thought I heard them, as plain as I hear that grasshopper in the hedge now.' 'What are the knockers?' 'They are the ghosts, the miners hold, of the old Jews, sir, that crucified our Lord, and were sent for slaves by the Roman emperors to work the mines; and we find their old smelting-houses, which we call Jews' houses, and their blocks of tin, at the bottom of the great bogs, which we call Jews' tin; and there's a town among us, too, which we call Market-Jew--but the old name was Marazion; that means the Bitterness of Zion, they tell me. Isn't it so, sir?' 'I believe it is,' said Lancelot, utterly puzzled in this new field of romance. 'And bitter work it was for them, no doubt, poor souls! We used to break into the old shafts and adits which they had made, and find old stags'-horn pickaxes, that crumbled to pieces when we brought them to grass; and they say, that if a man will listen, sir, of a still night, about those old shafts, he may hear the ghosts of them at working, knocking, and picking, as clear as if there was a man at work in the next level. It may be all an old fancy. I suppose it is. But I believed it when I was a boy; and it helped the work in me that night. But I'll go on with my story.' 'Go on with what you like,' said Lancelot.