It was a horrid sight to watch the continual, quick, aimless movements of the men who passed and overtook each other, turning sharply when they reached the wall, never looking at one another, and evidently concentrated each on his own thoughts. The young Tsar had observed a similar sight one day when he was watching a tiger in a menagerie pacing rapidly with noiseless tread from one end of his cage to the other, waving its tail, silently turning when it reached the bars, and looking at nobody. Of these men one, apparently a young peasant, with curly hair, would have been handsome were it not for the unnatural pallor of his face, and the concentrated, wicked, scarcely human, look in his eyes. Another was a Jew, hairy and gloomy. The third was a lean old man, bald, with a beard that had been shaven and had since grown like bristles. The fourth was extraordinarily heavily built, with well-developed muscles, a low receding forehead and a flat nose. The fifth was hardly more than a boy, long, thin, obviously consumptive. The sixth was small and dark, with nervous, convulsive movements. He walked as if he were skipping, and muttered continuously to himself. They were all walking rapidly backwards and forwards past the hole through which the young Tsar was looking.