been expressed as to the origin of the works and the people who executed them. He himself believes that they are all the work of the peoples who lived here when America was discovered, and are represented by the present Indians; that they are not of a very extreme antiquity; and that the continent was peopled by tribes who came down from the northwest through the region between Hudson Bay and the Rocky Mountains. * * * * * Of Nature books encouraging the study of the life around us we have an abundance--of some sorts, perhaps, a superfluity--and they have their uses, one of the chief of which is drawing people, who might otherwise never think of it, to the observation of natural facts, and to inquiry into their character and causes. Such books are fittingly complemented by the _Handbook of Nature Study_,[20] of _D. Lange_, of St. Paul, Minnesota, which teaches how system may be introduced into this occupation. In it, the author has undertaken to point out some of the material which may be made the basis of profitable lessons in Nature study, and to show how this material may be made available, and what the pupils may be taught about it. The author has arranged the matter of the subject of his teachings according to seasons and life communities. He begins at home in the spring, and directs the wanderings of the pupils to the waters, fields, and prairies, the roadsides and neglected corners, studying besides the plants and animals, the geological action of water, the flowers of the fields and the needs of neglected places, window flowers, and domestic animals. Then he goes to the woods--in spring, in summer, and in autumn--and their plant and animal life, the effect of all these upon the earth, and their relations to one another. Some practical precepts are given to teachers concerning the method of conducting the study of Nature.