Then, sitting alone in the ruddy glow, with a rock for a stool, and another before him for an anvil, he scraped all he could of the greenish oxidation from the cover of the tube, and tried, as before, to wrench it off. The stubborn parts remained solidly rusted together. This he had apparently expected. For he took up a rock of convenient size and, gently beating the cylinder just below its union with the cover, he bent it slightly inward about its entire circumference, meanwhile pausing from time to time to thrust his knife between the cemented pieces and force them a little apart. The tube was considerably mangled by this process, while the cover still adhered. In a final burst of impatience, Grenville thrust the battered cap in the crevice between two bowlders and wrenched it roughly away. Then he turned the hollow tube to the light, revealing, within, the edge of some document, thick and loosely rolled. This he readily removed and straightened in his hands, placing the tube beneath his arm. For a moment the parchment seemed, despite the firelight upon it, a mere blank square, of leathery texture and weight. Then he fancied he saw upon its surface some manner of writing, or signs. He resumed his seat and held the thing to the fullest light of the flames. It was yellowish tan in color, a trifle stiff, and inclined to curl to the shape it had held so long. Grenville turned it over, so dim were the characters it bore. There was nothing, however, on its outer side, wherefore he bent more closely towards his wavering light above such signs as he could finally discern. Perhaps the fact that he began by expecting to find some ordinary map, or printed or written characters, for a short time baffled his wits. Howbeit, he began at length to discover the fact that a few large signs or hieroglyphics had been rudely sketched upon the parchment. When this discovery was finally confirmed, he had still considerable difficulty in tracing the lines that comprised these singular designs. The firelight cast dark shadows in certain crease-like traceries that folds in the substance had formed. It was not until he presently managed to discriminate between these mere wrinkles and the "writing," that he made the slightest progress. His eyes at last became more keen to follow the artist's meaning. With his stub of a pencil, on a whittled bit of wood, he began to copy what he "read." The result was, crudely, this: [Illustration: parchment with signs and hieroglyphics] It was not a map; it could hardly be a message--unless expressed in some short-hand system heretofore unknown--yet it must at some time or other have been accounted important to have been so elaborately preserved. Grenville turned it upside down, compared his copy with the original repeatedly, and then examined the parchment with most minute particularity in search of some smaller writing to explain these mysterious signs.