The Greek of old was wise in his generation and poetic as was his habit, when he imagined nine muses and when he feigned that each of them was to watch over a separate art, and to inspire those who might strive to excel in this. It is true that nowadays we cannot help feeling that the sister-muses of Tragedy and of Comedy have been a little derelict to their duty, if they are really responsible for all the plays of our time, not a few of which seem to be sadly lacking in inspiration. But of late another of the sacred nine appears to have aroused herself out of her lethargy and to have awakened to a fuller realization of her opportunity. At least, there are many evidences now visible in the United States that Terpsichore has been attending strictly to business, and sending out travelers with many diverse specimens of her wares. Indeed, there has probably never been a time when so many different varieties of the dance have been on exhibition before the American people. It was once remarked by a shrewd observer that there were only three kinds of dancing, the graceful, the ungraceful, and the disgraceful. And in the United States we have had presented to us in the past few years specimens of all three kinds. In the middle of September, 1910, the Playground Association of America held an outdoor session in Van Cortlandt Park, in New York, and three hundred persons, mostly children, took part in the exercises. The most interesting feature of the program was a series of national folk-dances executed by boys and girls from the public schools. New York is the huge melting-pot where all nationalities of Europe meet to be fused into Americans; and these children were, most of them, executing the dances of the countries their parents had come from--dances for which they had, therefore, a traditional and hereditary predilection. German girls in the costumes of the Rhine, gave a peasant dance to the simple tune of 'Ach, du lieber Augustin'; and colored children, in perfect rhythm, moved thru a reel to the music of the 'Suwanee River.' The wild Hungarian _czardas_ was carried off with a splendid swing by men and women born on the banks of the Danube; and an Irish quartet displayed their agility and their precision of time-keeping in a four-handed country-dance. And at the end, all the participants in the several national dances took part in a general harvest-dance. This was an effective spectacle, possible only here in America, where representatives of many peoples come to mingle, even tho each of them retains a sentiment of loyalty to the old home it has left forever.