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14 Its value, as a means of producing food and mechanical power, varies with its form (as mountain or plain), with its substance (in soil or mineral contents), and with its climate. All these conditions of intrinsic value must be known and complied with by the men who have to deal with it, in order to give effectual value; but at any given time and place, the intrinsic value is fixed: such and such a piece of land, with its associated lakes and seas, rightly treated in surface and substance, can produce precisely so much food and power, and no more.

The second element of value in land being its beauty, united with such conditions of space and form as are necessary for exercise, and for fulness of animal life, land of the highest value in these respects will be that lying in temperate climates, and boldly varied in form; removed from unhealthy or dangerous influences (as of miasm or volcano); and capable of sustaining a rich fauna and flora. Such land, carefully tended by the hand of man, so far as to remove from it unsightlinesses and evidences of decay, guarded from violence, and inhabited, under man's affectionate protection,