Page:Principles of Political Economy Vol 2.djvu/32

12 merit on loan are called the monied class: and the equivalent given for the use of capital, or in other words, interest, is not only called the interest of money, but, by a grosser perversion of terms, the value of money. This misapplication of language, assisted by some fallacious appearances which we shall notice and clear up hereafter, has created a general notion among persons in business, that the Value of Money, meaning the rate of interest, has an intimate connexion with the Value of Money in its proper sense, the value or purchasing power of the circulating medium. We shall return to this subject before long: at present it is enough to say, that by Value I shall always mean Exchange Value, and by money the medium of exchange, not the capital which is passed from hand to hand through that medium.

§ 2.The value or purchasing power of money depends, in the first instance, on demand and supply. But demand and supply, in relation to money, present themselves in a somewhat different shape from the demand and supply of other things.

The supply of a commodity means the quantity offered for sale. But it is not usual to speak of offering money for sale. People are not usually said to buy or sell money. This, however, is merely an accident of language. In point of fact, money is bought and sold like other things, whenever other things are bought and sold for money. Whoever sells corn, or tallow, or cotton, buys money. Whoever buys bread, or wine, or clothes, sells money to the dealer in those articles. The money with which people are offering to buy, is money offered for sale. The supply of money, then, is the quantity of it which people are wanting to lay out; that is, all the money they have in their possession, except what they are hoarding, or at least keeping by them as a reserve for future