Until recently, historians tended to stress the perceived technological and ecological shortcomings of medieval agriculture. The ten essays assembled in this volume offer a contrary view. Based upon close documentary analysis of the demesne farms managed for and by lords, they show that, by 1300, in the most commercialized parts of England, production decisions were based upon relative factor costs and commodity prices. Moreover, when and where economic conditions were ripe and environmental and institutional circumstances favourable, medieval cultivators successfully secured high and...