There are many opportunities in the ordinary household to teach girls and boys to do useful work in a spirit very similar to that which they put into their games. It may not be possible to make all the necessary work as interesting as games, but the remoter purpose of the work, whether it is to accomplish something whose need is recognized by the child, or the hope of some reward, should make for close attention to the task in hand. For example, after a certain age, sweeping and other household tasks lose their play interest; but if the girl has become skilful enough to do the sweeping without tiring, her recognition of the necessity of the work or her thought of what she wants to do when the task is accomplished should make it possible to get through with this work without a feeling of hardship. Some educators approve of allotting definite tasks to the girls and boys, and compensating them in definite amounts. This gives them not only a measure of the value of their service, but makes them feel the responsibility of each contributing toward the maintenance of the establishment. The main thing is that the children shall not look upon work as a cruel imposition; and to this end we should develop the spirit of helpfulness and cooperation--and to transfer this spirit, already developed in play, to the work that has to be accomplished. One form of the expression of the play instinct has come lately to arouse a great deal of public interest, and that is the dance. Books have been written about the history of the dance, the esthetics of the dance, the technique of the dance, the symbolism of the dance, and many other aspects. What concerns the parent chiefly is to know that the dance is at once a healthful exercise, an important aid to social adjustment, and a valuable safety-valve for the emotions.