B. F. Porshnev's book, Outline of the Political Economy of Feudalism, (Gospolitizdat, 1956, 207 pp.), has attracted the attention of historians and economists. This is because the book constitutes attempts to give a systematic and detailed account of the political economy of feudalism. Such an attempt is to be welcomed in every possible way. B. F. Porshnev is well known as an erudite medievalist, a specialist in feudal affairs. The author has set himself the goal of analyzing the more important internal relations of feudal political economy, replacement production, the nature of the feudal rent and its distribution, the characteristics of exchange and pricing under feudalism, and also of analyzing critically the economic ideology of the feudal era. In this book the reader will find many interesting generalizations and original conclusions on a series of problems of feudal political economy.