After proceeding about a mile in an up-town direction, Constans turned and walked westward for a couple of blocks. It was a broad and handsome avenue on which he now found himself, and from the character of the buildings which lined it Constans concluded that here was where the wealth and fashion of the ancient world had had its chosen habitation. Once again he would gladly have lingered for a closer examination of the many things that interested him, but the spur of his purpose as often pricked him on. Yet finally he did stop, thrilling with the sense of a great discovery. It was a large and architecturally impressive building that had attracted Constans's attention, and a flash of intuition enabled him to pronounce upon its true character at first sight. He was now at the very heart of the city's social and intellectual life; here, if anywhere, he might expect to find one of the magnificent libraries upon which the ancient municipality had prided itself. He must decide the question, and, after some further searching, he discovered a side door that yielded to his touch. He was right, then; this was truly a library, and could he ever have imagined that there were so many books in the world! A cloud of dust rose under his feet as he went up to the cases and tried to read the tarnished titles of the volumes on the shelves. Again Chance led him aright, and his eye brightened as he discovered an unpretentious volume that proclaimed itself: _The Official Visitors' Guide to the City of New York for the Year 1905_. He pulled out the book and opened it. Of course it contained what he wanted, a large folding map, and spreading the latter out upon a table Constans set himself to studying it earnestly; this was his enemy's territory, and he must acquaint himself as thoroughly as possible with its points of weakness and its points of strength. The task of identification proved easier than he had thought possible. Here was where he had landed the night before. Step by step he could trace his walk up-town, and the identity of the building in which he now stood was made certain by the ruins of the great white cathedral a few blocks farther north. And there, a dozen or more blocks to the south, there was the citadel, the living heart of the outlaw world, there was the stronghold in which one Quinton Edge sat secure and at his ease. A cold misgiving suddenly struck at Constans's heart. How could he hope to make way alone against a host? How could he think to reach an enemy protected by these impregnable walls? For such a task he would need to wield the thunderbolts of the gods, and he had only his useless pistol and his long bow. He sighed and let his head droop for a moment, then felt ashamed of his weakness and straightened up again. The way was there; he would find it.