Nicolás Avellaneda, professor of Economics at the University of Buenos Aires, when only 23 years old, was as intelligent representative of the classical school. He exposes his principles with a personal flavour and admirable eloquence. When 28 years old he wrote his "Estudios sobre las Leyes de Tierras Públicas", a master work of Argentine economic historiography. His conceptions of foreign loans can be resumed as follows: 1º He was not against foreign loans but, in order to avoid risks and sacrifices, he advises to appeal first to the nation's possibilities; 2º A loan is paid back by taxes and is detrimental to futures generations; 3º The future cannot be foreseen; the Argentine historical experience has shown, especially whit regard to the first British loan, that the works contemplated were never executed, aggravating thus the economic situation; 4º Only in case of extreme necessity could a foreign loan be justified, but the interested country cannot count upon the capitalist's generosity. This is why a foreign loan should be prudently negotiated. Neither the present economic principles, nor the jurisprudence are contradicting Avellanedas's ideological position and we have to admit that his work are of a high value for the economic culture of Argentina