1. Economical Exchanges may begin, be profitable to both parties, and go forward to a certain extent, without the use of any money at all. As a matter of fact and probably for a long time, while the Civilizations were gathering their inchoate forces for a further progress, men exchanged one Service directly for another without the intervention of any medium. This form of trade is called Barter. King Hiram of Tyre furnished to King Solomon of Judea a certain quantity of cedars from Mt. Lebanon for the building of the new Temple at Jerusalem, and Solomon in return furnished to the Tyrians a certain quantity of wheat and oil, Judea being a fertile agricultural country with no forests, and Tyre a wooded country with no farms. This may well serve us as an instance of Barter, although Money had been in current use in those regions a thousand years before, as is seen in the purchase by Abraham of the cave and field of Machpelah, for which he weighed out "_four hundred shekels of silver, current money with the merchants_." It is obvious, however, that while Barter is a good deal better than no exchanges at all, there are inherent and immense difficulties in that form of trade. (a) Under Barter trade is extremely limited in its _personnel_. Only those parties can engage in it, each of whom is in position to render to the other just such a Service as the other is in direct and immediate need of, and each of whom also wants another Service in kind and quantity exactly what the second man has to render. It is not enough under these conditions, that a man should have some Service to sell, but he must also find some other man, who not only wants that specific service but who also has some service to render in return just such as the first man wants. If A has wheat which he wishes to exchange for a coat, he must first find a party desiring wheat and also having a coat to sell, and moreover who wants just as much wheat as will pay for a coat, no more and no less; if he wants more, he may have nothing to render for the excess which A is willing to accept; if less, A may have nothing besides wheat with which to help pay for the coat. Even in the simpler states of Society the inconveniences of thus hunting up a specific market for each specific service are very great, and in more advanced states of civilization would become intolerable, if it were possible (as it is not) for Society to become advanced under such conditions.