In _The Story of a Sand-Pile_ (255), President G. Stanley Hall has chronicled for us the life-course of a primitive social community-nine summers of work and play by a number of boys with a sand-pile in the yard of one of their parents. Here we are introduced to the originality and imitation of children in agriculture, architecture, industrial arts, trade and commerce, money and exchange, government, law and justice, charity, etc. The results of this spontaneous and varied exercise, which, the parents say, "has been of about as much yearly educational value to the boys as the eight months of school," and in contrast with which "the concentrative methodic unities of Ziller seem artificial, and, as Bacon said of scholastic methods, very inadequate to subtlety of nature," Dr. Hall sums up as follows (255. 696):-- "Very many problems that puzzle older brains have been met in simpler terms and solved wisely and well. The spirit and habit of active and even prying observation has been greatly quickened. Industrial processes, institutions, and methods of administration and organization have been appropriated and put into practice. The boys have grown more companionable and rational, learning many a lesson of self-control, and developed a spirit of self-help. The parents have been enabled to control indirectly the associations of their boys, and, in a very mixed boy-community, to have them in a measure under observation without in the least restricting their freedom. The habit of loafing, and the evils that attend it, have been avoided, a strong practical and even industrial bent has been given to their development, and much social morality has been taught in the often complicated _modus vivendi_ with others that has been evolved. Finally, this may perhaps be called one illustration of the education according to nature we so often hear and speak of." This study of child-sociology is a _rara avis in terra_; it is to be hoped, however, that if any other parents have "refrained from suggestions, and left the hand and fancy of the boys to educate each other under the tuition of the mysterious play-instinct," they may be as fortunate in securing for the deeds of their young off-spring, as observant and as sympathetic a historian as he who has told the story of the sand-pile in that little New England town. Bagehot, in the course of his chapter on "Nation-Making," observes (395. 91):--