...is a fabulous exhibition at the Dean Gallery in Edinburgh that builds on their distinguished collection of surrealist paintings and related works (books, pamphlets, posters) to evoke the origins of surrealism (in Dada), its development and post-war fading and dispersion into influence on other movements. This included an illuminating room of British artists both those who identified with and those influenced by surrealism. Here there were the known and familiar - a Paul Nash, a Cecil Collins, a Graham Sutherland - and (to me at least) the unfamiliar - John Armstrong and a haunting piece by Edith Rimmington called, 'Family Tree'. What appears as a seascape in moonlight becomes hauntingly strange - both by the extension of the chain on the pier, extending as if into infinity and by the snake that weaves itself within the extended chain in the foreground. Connecting this with the title immediately brought sin to mind: the chain of consequence, passed through the tree of hu...