The general evolution of this soil is toward greater powers; and yet, so nicely balanced are these powers that within his lifetime a man may ruin any part of it that society allows him to hold; and in despair he throws it back to nature to reinvigorate and to heal. We are accustomed to think of the power of man in gaining dominion over the forces of nature,--he bends to his use the expansive powers of steam, the energy of the electric current, and he ranges through space in the light that he concentrates in his telescope; but while he is doing all this, he sets at naught the powers in the soil beneath his feet, wastes them, and deprives himself of vast sources of energy. Man will never gain dominion until he learns from nature how to maintain the augmenting powers of the disintegrating crust of the earth. We can do little to control or modify the atmosphere or the sunlight; but the epidermis of the earth is ours to do with it much as we will. It is the one great earth-resource over which we have dominion. The soil may be made better as well as worse, more as well as less; and to save the producing powers of it is far and away the most important consideration in the conservation of natural resources. Unfortunately, it is impossible to devise a system of farm accounting that shall accurately represent the loss in producing power of the land (or depreciation in actual capital stock). The rising sentiment on the fertility question is just now reflected in the proposal to ask Congress and the states to make it a misdemeanor for a man to rob his land and to lay out for him a farm scheme. This is a chimerical notion; but the people are bound to express themselves unmistakably in some way on this subject. Even if we should ultimately find that crops do not actually deplete land by the removal of stored plant-food in the way in which we have been taught, it is nevertheless true that poor management ruins its productivity; and whatever the phrase we use in our speaking and writing, we shall still need to hold the land-usurer to account. _No man has a right to plunder the soil._ The man who tills and manages the soil owes a real obligation to his fellow-men for the use that he makes of his land; and his fellow-men owe an equal obligation to him to see that his lot in society is such that he will not be obliged to rob the earth in order to maintain his life. The natural resources of the earth are the heritage and the property of every one and all of us. A man has no moral right to skin the earth, unless he is forced to do it in sheer self-defense and to enable him to live in some epoch of an unequally developed society; and if there are or have been such social epochs, then is society itself directly responsible for the waste of the common heritage. We have given every freeholder the privilege to destroy his farm.