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xiv with regard to the horse or the ass. And, in fine, the modern political economists have been, without exception, incapable of apprehending the nature of intrinsic value at all. 9. And the first speciahy of the following treatise consists in its giving at the outset, and maintaining as the foundation of all subsequent reasoning, a definition of Intrinsic Value, and Intrinsic Contrary-of-Value; the negative power having been left by former writers entirely out of account, and the positive power left entirely undefined.

But, secondly: the modern economist, ignoring intrinsic value, and accepting the popular estimate of things as the only ground of his science, has imagined himself to have ascertained the constant laws regulating the relation of this popular demand to its supply; or, at least, to have proved that demand and supply were connected by heavenly balance, over which human foresight had no power. I chanced, by singular coincidence, lately to see this theory of the law of demand and supply brought to as sharp practical issue in another great siege, as I had seen the theories of intrinsic value brought, in the siege of Venice.