The book starts with the basic science of hydraulic power, and a review of other 19th century public energy supplies. There is then an extensive section on water-powered machines, with lots of drawings to explain their workings, and a chapter on the public hydraulic networks, at Hull, London, Liverpool, Glasgow, Manchester, Birmingham, Melbourne, Sydney and Antwerp. Hull started in 1876, and the London system operated until 1976. Finally, there is a summary of developments in hydraulic systems and electricity generation. A fascinating history, well illustrated with photographs and drawings.