At night the scene changes. The crowd of vehicles on the street is not so dense, and the "foot passengers" are somewhat thinned put. The lower part of the city, which is devoted exclusively to business, is deserted. For blocks the only persons to be seen are the policemen on their beats. Above Canal street, however, all is life and bustle. The street is brilliantly lighted. The windows of the stores and restaurants, and the lamps of the theatres and concert saloons, add greatly to the general illumination, while the long lines of the red, green, and blue lights of the stages, rising and falling with the motion of the vehicles, add a novelty and beauty to the picture. Strains of music or bursts of applause, float out on the night air from the places of amusement, not all of which are reputable. The street is full of all kinds of people, all of whom seem to be in high spirits, for Broadway is a sure cure for the "blues." One feature mars the scene. At every step, almost, one passes women and girls, and even mere children, seeking for company, and soliciting passers by with their looks and manner, and sometimes by open words. The police do not allow these women to stop and converse with men on the street, and when they find a companion, they dart with him down a side street. This goes on until midnight. Then the street gradually becomes deserted, and for a few hours silence reigns in Broadway. THE BOWERY. Leaving the City Hall, and passing through Chatham street, one suddenly emerges from the dark, narrow lane, into a broad square, with streets leading from it to all parts of the city. It is not overclean, and has an air of sharpness and repulsiveness that at once attract attention. This is Chatham Square, the great promenade of that class generally known as "the fancy." At the upper end of the Square is a broad, well paved, flashy looking street, stretching away to the northward, crowded with street cars, vehicles of all kinds, and pedestrians. This is the Bowery. It begins at Chatham Square, and extends as far as the Cooper Institute on Eighth street, where Third and Fourth Avenues, the first on the right hand, the other on the left, continue the thoroughfare to the Harlem river.