Method of measurement: division of total trade into three categories, 566; possible misinterpretation of the figures, 572. — Main result of the calculations: the data, 573; the traditional type of exchange not dominant, 576; comparison with findings of the Institut für Weltwirtschaft, 577. — Analysis of the statistics for groups of countries, 579. — Commodity structure of British foreign trade since 1854, 588. — Historical importance of the traditional view of the commodity structure of world trade, 591.