No review can match the richness of Ennos’s book. There are chapters or sections on coal and charcoal, pottery kilns, modern wooden buildings, techniques of melting and smelting metals, the history of shipbuilding, wind and watermills, deforestation and much else. He is marvellous at describing physical processes. His accounts of plywood manufacture, or of huge Dutch rafts on the Rhine, with rudders 45ft long operated by seven men, will stay with me for a long time. He ends with a plea for us to mend our broken relationship with trees and forests. I felt like cheering.