This summer evening view of Loch Crinan, taken from the Crinan Canal's entry locks at Crinan, is part of a project I am involved in which explores the life and work of John Rennie, the great Scottish engineer. Amongst other things, Rennie was responsible for constructung the Kennet and Avon Canal in Wiltshire – with its beautiful bridges and its pumping stations at Crofton and Claverton. He also surveyed the routes of both the Crinan Canal across the north of the Kintyre penisular, and the Caledonian Canal which runs up through Scotland's Great Glen. His London Bridge – actually completed ten years after his death – was demolished in 1968 and now spans a specially dug canal in Lake Havasu City in Arizona. His beautiful Waterloo Bridge across the Thames, demolished long ago, was once considered his masterpiece, and had it been anything other than a key thoroughfare across the Thames, it would probably by now be a Grade 1 listed structure.