Besides the National Forests, there are more than 4,000,000 acres of STATE FORESTS.

Twenty-four states have forestry departments, sometimes under a state board or a commission, sometimes under the control of a single state forester, as in Massachusetts and Virginia. In New York, New Jersey, and Wisconsin the state forestry is a part of the work of a general "conservation commission." In Connecticut it is centered in the state agricultural experiment station, and in Texas in the agricultural college. In South Dakota the state forester is under the "commissioner of schools and public lands." So there is great variety in the organization of forestry work, and great variation in the amount and kind of attention given to it.

PRIVATELY OWNED TIMBERLANDS

The difference between the number of states having state forests and the number having forestry departments is due to the fact that the public forests embrace only a small part of the timbered land of a state. It will be noted from the table on page 225 that only one southern state (North Carolina; two if Maryland is counted) has state forests. Six of them (eight with Maryland and Virginia) have state forestry departments. More attention is now being given to forest preservation and use in the South than these facts indicate, because of cooperation between state and national governments, chiefly through the county agents. Such cooperation also exists in the northern states. The map on page 242 shows cooperation for fire protection in New Hampshire.

VOLUNTARY PROTECTIVE ASSOCIATIONS

The conservation of our forest resources requires cooperation on the part of citizens. In many states there are "timberland owners' fire protective associations," in 1917 about fifty of them. There is an American Forestry Association that publishes a magazine devoted to forestry, AMERICAN FORESTRY; a Society of American Foresters; The Camp Fire Club of America, with a committee on conservation of forests and wild life. Besides, there is a considerable number of local associations with similar purposes.

EROSION

It is not always realized how important to our welfare the forests are, especially from the point of view of agricultural production. A very large part of the timbered area of the United States is in small woodlands on privately owned farms. Not only are the timber resources themselves of great value, but the relation of woodland to agriculture is very close, especially in its effect upon soil erosion.

Altogether it has been estimated that erosion is responsible for an annual loss in this country of approximately $100,000,000. To the farmer it means money out of pocket from start to finish. It impairs the fertility and decreases the productivity of his land, and may even ruin it altogether; it renders irrigation more difficult and more costly; by reducing the possibilities of cheap water power development it tends to keep up the price and check the more extended use of electricity; and by interfering with navigation it helps to prevent the development of a comprehensive system of cheap inland water transportation. But the farmer is not the only sufferer. The entire community is directly affected by the loss and is justified in taking heroic measures to remedy the evil.

If the problem is to be solved we must cease to accelerate surface run-off by burning the forests and brush fields, overgrazing the range, clearing steep slopes for agriculture, and practicing antiquated methods of cultivation. On the contrary, the farmer, the forester, and the stockman must cooperate in seeing that the land is so used that surface run-off, particularly at the higher elevations, is reduced to a minimum.