ABSTRACT
In this chapter an account will be presented of the history and the present status of the theory of the mechanism of adjustment of international balances, in terms throughout of the simplifying assumption of an international simple specie currency, i.e., with the circulating medium consisting solely of standard metallic money. It was in terms of this assumption that the theory was first presented, and it has served ever since as a convenient device whereby to segregate for separate treatment different problems connected with the mechanism. It should be noted that in this chapter, as throughout the book, the term "balance of payments" is used in its original sense of an excess of immediate claims on abroad over obligations to abroad, or vice versa, which must be liquidated by specie. It should be noted also that by a "disturbance" to international equilibrium will be meant a change in one of the elements in a preexisting equilibrium such as to require a new equilibrium, and that this change, whether it takes the form of a series of crop failures, of international tributes or loans, of new import duties, or of a relative change in the demands of the two countries for each other's products, is presumed to continue indefinitely, and its cessation is treated as a new change in the re-·verse direction. A wide variety of disturbances can be used to
illustrate the theory of the mechanism of international trade, and each has its own sequence of stages and to some extent its own set of special problems. A selection must be made, therefore, and the reader is asked not to attribute to me or to the writers cited generalization of the conclusions reached from the analysis of cases specifically dealt with beyond what the context clearly shows to be intended.
