This was only one group of many hundreds in every quarter of Chicago,--in schools, settlements, kindergartens, and other centers,--who were rehearsing for the third of the annual play festivals given out of doors each year in Chicago. The festivals are held in the most spacious of the seventeen wonderful public gardens and playgrounds established of late throughout the city. Lasting all day, this annual carnival of play is shared by school children, working girls and boys, and young men and women. In the morning the children play and perform their costume dances. In the afternoon the fields are given up to athletic sports of older children, and in the evening young men and women, of all nationalities, many wearing their old-world peasant dresses, revive the plays and the dances of their native lands. Tens of thousands view the beautiful spectacle, which each year excites more interest and assumes an added importance in the civic life of Chicago. Each of the large parks in Chicago's system is provided with a municipal dance hall, spacious buildings with perfect floors, good light, and ventilation. Any group of young people are at liberty to secure a hall, rent free, for dancing parties. The city imposes only one condition,--that the dances be chaperoned by park supervisors. Beautifully decorated with growing plants from the park greenhouses these municipal dance halls are scenes of gayety almost every night in the year. Park restaurants in connection with the halls furnish good food at low prices. Of course no liquor is sold. Nobody wants it. This is proved by the fact that saloon dance halls in the neighborhood of the parks have been deserted by their old patrons. Women have recognized the debt to youth and the joy of life, and they are preparing to pay it. In this latest form of social service they have entered a battlefield where the powers of righteousness have ever fought a losing fight. Men have grappled with the social evil without success. They have labored to discover a substitute for the saloon, and they have failed. They have tried to suppress the dance hall and they have failed. They have made laws against evil resorts, and they have sent agents of the police to enforce their laws, but to no effect. The failure of the men does not dishearten or discourage the women who have taken up the work. They believe that they have discovered an altogether new way in which to fight the social evil.