It was growing late. Night had drawn its sombre veil over the great city, and the streets, a little while before filled with busy passers-by, now echoed but seldom to the steps of an occasional wayfarer. The shops were closed, the long day assigned to trade being over. To plodding feet and busy brains, to frames weary with exhausting labor, to minds harassed by anxious cares, night came in friendly guise, bringing the rest and temporary oblivion of sleep.