This study examines the role of technological innovation during the rise of social groups in the Middle Ages

Excellent.--Louis P. Towles, Central Wesleyan College The most stimulating book of the century on the history of technology...a positive delight.--Isis At once an advance in the study of medieval technology and also the best introduction to the subject for the serious general reader.--The Economist Still essential reading for students of Medieval studies. A must for those interested in Medieval technology and its impact on the development of western society.--Cecile-Marie Sastre, Flagler College

Lynn White is Founding Director of UCLA Center for Medieval & Renaissance Studies, University of California, Los Angeles.

1. Stirrup, Mounted Shock Combat, Feudalism, and Chivalry I. The Classic Theory of the Origins of Feudalism and its Critics II. The Origin and Duffusion of the Stirrup III. Mounted Shock Combat and the Temper of Feudal Life 2. The Agricultural Revolution of the Early Middle Ages I. The Plough and the Manorial System II. The Discovery of Horse-Power III. The Three-Field Rotation and Improved Nutrition IV. The Northward Shift of Europe's Focus 3. The Medieval Exploration of Mechanical Power and Devices I. The Sources of Power II. The Development of Machine Design III. The Concept of a Power Technology Notes Index