‘. . . Like Cowell's collection, this new volume is a treasure trove. It contains classics such as Lorenz's 1905 'Methods of Measuring the Concentration of Wealth' ( - strange how disconcerting it is to see the Lorenz curve, as originally drawn, on a graph with per cent of total wealth along the horizontal axis, and per cent of population along the vertical). It also contains more recent material, including Foster and Wolfson's 2010 article 'Polarization and the Decline of the Middle Class.’