The place he was in was round and bottle shaped, measuring some ten feet across its floor, and tapering to a small square, where the trap gave it entrance above. It was a prison clearly, and there was evidence that it had been recently used. It was clear also that the only official way of releasing a prisoner was to get him up by a ladder or rope through the small opening to which the sides converged overhead. Moreover, to all common seeming, the place was simply unbreakable, at least to any creature who had not either wings or the power of crawling up the under-side of a slant like a fly. But all these things flashed through Kettle's brain in far less time than it takes to read them here. He had only two matches in his possession, and he wished to make all possible use of the first, so as to keep the second for emergencies; and so he made his survey with the best of his intelligence and speed. The walls of this bottle-shaped prison were of bricks built without visible mortar, and held together (it seemed probable) by the weight of earth pressing outside them; but just before the match burned his fingers and dropped to the floor, where it promptly expired, his eye fell upon an opening in the masonry. It was a mere slit, barely three inches wide, running vertically up and down for some six courses of the brick, and it was about chin-high above the ground. He marked this when the light went out, and promptly went to it and explored it with his arm. The slit widened at the other side, and there was evidently a chamber beyond. He clapped his hands against the lip of the slit, and set his feet against the wall, and pulled with the utmost of his strength. If once he could widen the opening sufficiently to clamber through, possibilities lay beyond. But from the weight of wall pressing down above, he could not budge a single brick by so much as a hairs-breadth, and so he had to give up this idea, and, stewing with rage, set about further reconnoitring. The darkness put his eyes out of action, but he had still left his hands and feet, and he went round with these, exploring carefully. Presently his search was rewarded. Opposite the opening he had discovered before, was another slit in the overhanging wall of this bottle-shaped prison, and this also he attacked in the hope of wrenching free some of the bricks. He strained and panted, till it seemed as though the tendons of his body must break, but the wall remained whole and the slit unpassable; and then he gave way, almost childishly, to his passion of rage, and shouted insults and threats at Rad el Moussa in the vain hope that some one would hear and carry them. And some one did hear, though not the persons he expected. A voice, muffled and foggy, as though it came from a long distance, said in surprise: "Why, Captain, have they got you here, too?" Under cover of the darkness, Kettle blushed for shame at his outcry. "That you, Murray? I didn't know you were here. How did you guess it was me?"