"An hour--maybe two--" Dalgard gave a hunter's verdict on the age of the print. He, too, eyed those buildings. To meet a snake-devil in the open was one thing, to play hide-and-seek with the cunning monster in a warren such as this was something else again. He hoped that the reptile had been heading for the open, but he doubted it. This mass of buildings would provide just the type of shelter which would appeal to it for a lair. And snake-devils did not den alone! "Try by the river," Sssuri gave advice. Like Dalgard, he accepted the necessity of the chase. No intelligent creature ever lost the chance to kill a snake-devil when fortune offered it. And he and the scout had hunted together on such trails before. Now they slipped into familiar roles from long practice. They took a route which should lead them to the river, and within a matter of yards, came across evidence proving that the merman had guessed correctly; a second claw print was pressed deep in a patch of drifted soil. Here the buildings were of a new type, windowless, perhaps storehouses. But what pleased Dalgard most was the fact that most of them showed tightly closed doors. There was no chance for their prey to lurk in wait. "We should smell it." Sssuri picked that worry out of the scout's mind and had a ready answer for it. Sure--they should smell the lair; nothing could cloak the horrible odor of a snake-devil's home. Dalgard sniffed vigorously as he padded along. Though odd smells clung to the strange buildings none of them were actively obnoxious--yet. "River--" There was the river at the end of the way they had been following, a way which ended in a wharf built out over the oily flow of water. Blank walls were on either side. If the snake-devil had come this way, he had found no hiding place. "Across the river--" Dalgard gave a resigned grunt. For some reason he disliked the thought of swimming that stream, of having his skin laved by the turgid water with its brown sheen. "There is no need to swim." Dalgard's gaze followed Sssuri's pointing finger. But what he saw bobbing up and down, pulled a little downstream by the current, did not particularly reassure him. It was manifestly a boat, but the form was as alien as the city around them. 4 CIVILIZATION