Diagrams showing the construction of sea defences at the Scottish port of Aberdeen. Above is a 'transverse section of the work in progres showing the moveable crane used for taking the stones off the wagons and for building', with the finished pier at high and low tide. Below: 'elevation of a part of the pier in progres showing the lifting a stone from the wagon on one side, and setting a stone in the work on the opposite side', and 'plan of a part of the pier in progres showing the crane, and the railway for bringing forward the materials'. Thomas Telford (1757-1834) extended the harbour, increasing the depth of water and thus improving trade. Illustration from Telford's 'Atlas to the Life of Thomas Telford, civil engineer', published in London in 1838.
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