Jules Dupuit, Société d'économie politique de Paris and the issue of population in France (1850 – 66)*

Abstract

The tradition that views Dupuit only as a brilliant engineer-economist who trained at the École nationale des Ponts et Chaussées remained strong in the fifty years that followed World War II. Within this tradition, research on Dupuit mostly was focused on his publications on surplus theory, road tolls and discriminating monopoly. His participation in the debates about other issues taking place within the various learned societies to which he belonged (Société d'économie politique de Paris, Société d'économie sociale, Société de statistique de Paris) long remained unexplored. But recent research has begun filling the gap. This paper follows on these latter research efforts. It aims at uncovering a largely unknown facet of Dupuit, endeavouring to fully elicit his role in the various controversies that took place in France between 1850 and 1866 on the issues of population and the Malthusian principle of population.