CHAPTER IX. OF THE AGRICULTURAL SYSTEMS, OR OF THOSE SYSTEMS OF POLITICAL ECONOMY WHICH REPRESENT THE PRODUCE OF LAND, AS EITHER THE SOLE OR THE PRINCIPAL SOURCE OF THE REVENUE AND WEALTH OF EVERY COUNTRY.

seems to be supposed in this system, that the value of the daily, monthly, and yearly consumption of this class was exactly equal to that of its daily, monthly, and yearly production; yet it would not from thence follow, that its labour added nothing to the real revenue, to the real value of the annual produce of the land and labour of the society. An artificer, for example, who, in the first six months after harvest, executes ten pounds worth of work, though he should, in the same time, consume ten pounds worth of corn and other necessaries, yet really adds the value of ten pounds to the annual produce of the land and labour of the society. While he has been consuming a half-yearly revenue of ten pounds worth of corn and other necessaries, he has produced an equal value of work, capable of purchasing, either to himself, or to some other person, an equal half-yearly revenue. The value, therefore, of what has been consumed and produced during these six months, is equal, not to ten, but to twenty pounds. It is possible, indeed, that no more than ten pounds worth of this value may ever have existed at any one moment of time. But if the ten pounds worth of corn and other necessaries which were consumed by the artificer, had been consumed by a soldier, or by a menial servant, the