About Albert Aupetit, Disciple and Successor of Leon Walras. His Contribtion to Monetary Theory and Foreign Trade During the Great Depression of the XIXe Century in a Context of Ges

It's time to know why such consideration between Walras and Albert Aupetit. R.Dehem related the judgment by himself: "Aupetit is in agreement with my social economics as well my pure and applied economics. He's the best and most brilliant disciple and successor I may wish to have." In this contribution, we demonstrate legacy of this point of view.Aupetit improved undoubtly neoclassical monetary theory, for examples the postulate sustaining the quantity theory, questions of composite monetary standards, bimetallism, exchange rate determination, index numbers. Before Cassel and Keynes, behaviour of exchange rate related to price levels and the interest rate can be founded in his work based upon statistical measures in the period of Great Depression of the last century (XIX)...Some contributions available today on Gold Exchange Standard would be useful to evaluate Aupetit's interpretations.