But even then, for the proper conducting of a school, there will, for _in-door exercise_, be something more required than has yet been provided, both as to kind and degree. When we examine a number of children at play, we seldom find them sitting, or even standing for any length of time, when they have space and opportunity to exercise their limbs. The hand-motions of the infant schools, therefore, although excellent so far as they go, do not go far enough; and even the marching of the children is obviously too monotonous, and not sufficiently lively, for throwing off the accumulated mass of animal spirits, which is so speedily formed in young persons while engaged at their lessons. It was to supply this defect that the writer, a number of years ago, made some experiments with a large class of children, and with complete success. The exercise was founded on the singing and marching of the infant schools, and consisted in what is known in certain seminaries, as "Rights and Lefts." The children were taught to meet each other in bands of equal number, and by giving the right and left hand alternately to those who came in the opposite direction, they undulated, as it were, through each others ranks, and passed on to their own music, till they met again on the other side of the room, and proceeded as before. The exercise thus afforded to the upper and lower extremities of each child, the expansion caused to the chest, and the play given to the muscles of the back and body, are exceedingly beneficial; and the whole being regulated by their own song, gives healthy, and not excessive exercise to the lungs and the whole circulation. It was also found, that this amusing employment for the young, was capable of great variety. Instead of two bands meeting each other in _lines_ in opposite directions, and parting, to meet again at the other side of the room, they were formed into a circle, one-half moving in one direction, and one-half moving in the opposite, by which means the circle was never broken. It was also found, that one of these circles, containing six or eight children only, could move within the other when it contained a larger number, without those in the one interfering in the least with those of the other; and the effect became still more imposing when _between_ these, and _without_ them, two other bands of children joined hands, united in the song, and moved round in opposite directions. These details may appear trifling to some; but experience will soon convince practical men, that in education, as in Nature, the most simple means often produce the most powerful and the most beneficial results. THE END.