(_e_) The location of ravines in relation to the river. (_f_) Caves or places where caves may have been or may yet be formed. (_g_) The nature of the soil and its adaptation to the formation of caves. (_h_) The parts of the neighboring land that would be flooded first if the river overflowed its banks. (_i_) The place in the river where a natural dam might be formed. (_j_) The place where an artificial dam might be built. (_k_) Sites that would make good camping-places for hunters. (_l_) Places where the best stones for weapons can be found. 2. To uncultivated spots on hillsides, in the woods or meadows to find: (_a_) Tough sticks and branches that are so shaped that they can be fastened firmly to stone implements. (_b_) Tough and flexible branches for making baskets. (_c_) Tough grasses for making mats, baskets, and sandals. (_d_) Birch bark for making baskets, picture frames, etc. (_e_) Natural gum and pitch. (_f_) Wood that is suitable for making a fire drill. (_g_) Tinder and punk for making fire. (_h_) A bed of gravel where good stones can be found. (_i_) Animals and plants that may be of interest to the child. Field lessons should be supplemented by informal trips by different members of the class. A view from the window of a high building may serve to give the child the relative location of the different parts of a river valley. Such a view is of special value after a trip, for it gives a unified view of the whole. In places where access to natural materials is exceedingly difficult, it is well to secure the advantages that come from a system of exchange. The American Bureau of Geography offers opportunities for securing all kinds of raw materials as well as specimens showing “the changes incident to their conversion into finished products.” Teachers who wish to avail themselves of the privileges of this bureau can secure a circular containing full information regarding it by sending a letter with an enclosed stamp to the director of the bureau, Winona, Minnesota. SPECIAL SUGGESTIONS