There was a long, throbbing silence. Rex sat with his head bent forward on his knees; Norah stared blankly before her, her face looking thin and ghost-like in the dim light. The silence grew oppressive, and presently the lad raised his head and touched his companion on the arm. "Don't look like that, Norah. What is it? Norah, speak! What are you thinking about?" He had to bend forward to hear the answer, for Norah's lips were dry, and her throat parched as with thirst. "Poor father!" she gasped; and Rex started at the sound with a stab of pain. "Don't! I can't bear it. Norah, for pity's sake don't give in--don't give up hope. Something will happen--it will--it must! We shall get out all right." "But if we can't go forward, and if we can't go back, and if no one can hear us call," said Norah, still in the same slow, gasping accents, "I don't see--how--we can. ... Rex! how long shall we have to wait before we--" "If you say that word, Norah, I'll never forgive you! We must get out-- we _shall_ get out! Come, rouse yourself like a good girl, and I will go back to see what I can do with that grating. It's our only chance. Lead the way until we come to the broadest part of the passage, and then I must manage to pass you somehow or other. It has to be done." Norah put out her hands and dragged herself wearily to her feet. The feeble gleam of the lantern seemed only to call attention to the inky blackness, and the air was so close and noisome, that she breathed in heavy pants. It had been a delightful adventure to explore this passage, so long as it was in her power to turn back at any moment; but now that there was this dreadful terror of not being able to get out at all, it seemed like a living grave, and poor Norah staggered forward in sick despair. As they neared the grating, however, it became possible to stand upright, and this, in itself, was a relief, for her back was aching from long stooping. Rex laid down the lantern at a safe distance, and put his hand on the girl's shoulder. "Now then, Norah, I am going to squeeze past. I may hurt you a little, but it will be only for a moment. Stretch your arms out flat against the wall, turn your head sideways, and make yourself as small as you can. I will take off my coat. Now! Are you ready?" "Ready!" said Norah faintly; and the next moment it seemed as if the breath were being squeezed out of her body, as Rex pressed her more and more tightly against the wall. A horrible gasp of suffocation, a wild desire to push him off and fight for her own liberty, and then it was all over, and they were standing side by side, gasping, panting, and tremulous. "That's over!" sighed Rex thankfully. "Poor Norah! I am afraid I hurt you badly, but it was the best plan to get it over as quickly as possible. Now then, hold up the lantern, and let me have a look round." ...