Corrado Gini, in his article "Measurement of Inequality of Incomes," published in *The Economic Journal* in 1921, discusses the methods for measuring income inequality. He acknowledges Hugh Dalton's method for measuring economic welfare inequality, which assumes additivity of economic welfare. Gini notes that Italian writers' methods focus on estimating income and wealth inequality independently of these assumptions. He recommends several papers by Italian scholars (Czuber, Gini, and Pietra) for a deeper understanding of the methods and their applicability to imperfect statistical data. Gini also highlights the practical utility of graphical methods based on the area of concentration and provides corrections for calculating the mean difference in imperfect statistics. He emphasizes the relationships between the mean difference, the area of concentration, and other indices of variability. Additionally, Gini corrects a mis attribution in Dalton's article and provides insights into the South African Currency Act of 1920, noting the establishment of a central bank with strict reserve requirements to prevent over-issue of banknotes.Corrado Gini, in his article "Measurement of Inequality of Incomes," published in *The Economic Journal* in 1921, discusses the methods for measuring income inequality. He acknowledges Hugh Dalton's method for measuring economic welfare inequality, which assumes additivity of economic welfare. Gini notes that Italian writers' methods focus on estimating income and wealth inequality independently of these assumptions. He recommends several papers by Italian scholars (Czuber, Gini, and Pietra) for a deeper understanding of the methods and their applicability to imperfect statistical data. Gini also highlights the practical utility of graphical methods based on the area of concentration and provides corrections for calculating the mean difference in imperfect statistics. He emphasizes the relationships between the mean difference, the area of concentration, and other indices of variability. Additionally, Gini corrects a mis attribution in Dalton's article and provides insights into the South African Currency Act of 1920, noting the establishment of a central bank with strict reserve requirements to prevent over-issue of banknotes.