One photograph titled 'Finding a place in the sun for your house' shows a man looking at small specimens of concrete stored in artificial seawater which are being used as part of a study to assess the durability of marine structures of concrete. The caption on the back describes how a small number of British architects are taking refresher courses, which include experiments like this, at the building section of the Department of Scientific and Industrial Research at Garston, near Watford. Hertfordshire.