Stationary states. Walras -- Kingdom come -- Marshall -- The Wicksell process -- The short period. Walras -- Marshall -- Keynes -- The Neo-neo classics: The productivity of investment ; The pseudoproduction function -- Ricardo and von Neumann -- The rate of exploitation -- Savings and investment -- Effective demand -- Increasing and diminishing returns. Irreversibility -- "Marginal products" -- Economies of scale -- Nonmonetary models. Market prices -- A one commodity economy -- Money and "real forces" -- Money in a golden age -- "Real" instability -- Prices and money. The theory of interest and money -- Counterrevolution and restoration -- The Chicago school -- The theory of employment -- Inflation -- The unit of account -- The theory of the firm. Perfect and imperfect competition -- Monopoly and oligopoly -- Choice of technique -- Macro and micro theory -- Growth models. Harrod -- Profits and saving -- Innovations: The meaning of neutral inventions ; The vintage model ; Neoclassical vintages -- Induced bias