There is a standard belief that the modern theory of marginal utility originated in the UK with Jevons, Germany with Gossen, Austria with Menger and France with Walras. In this new book, John Chipman introduces new English translations of important writings from German economists such as Rau, Hildebrand, Roscher and Knies showing that the introduction of this concept originated with them. This ground breaking book comes with a long introduction from John Chipman analysing the theory.