Design for an iron aqueduct, 1796.
© Science Museum / Science & Society Picture Library
Engraving after a drawing by inventor Robert Fulton (1765-1815) of an aqueduct of his own design, from his 'A treatise on the improvement of canal navigation' (London, 1796). This aqueduct is similar to those built later by Thomas Telford (1757-1834). Many canals were built in England in the late 18th century. Fulton was convinced that it would be cheaper to use small canals with inclined planes between different levels and cable viaducts over rivers. 'Tub and cistern' lifting motors provided the power.