The concept of 'marginal value' is critical to the emergence of neo-classical economics. This volume is divided into sections on:

Book I: Utility (Disutility of labour, Utility and Wants, Direct and Indirect Utility, Utility Equations, Subjective Price)

Book II: Value and Market (Objective Price, Markets, Value)

Book III: Relations of Subjective Prices (The Distribution of Income and Prices, The Elasticity of Consumption, Differential Rent)

Book IV: The Normal Market (Constant, Decreasing and Increasing Return)