LONDON.- This summer the National Gallery displays 51 paintings from a major private collection, most of which have never been seen in the UK before, and are rarely on public view. ‘Forests, Rocks, Torrents’ draws on the collection of Asbjørn Lunde, an American who has formed the world’s leading private collection of Norwegian and Swiss landscape paintings, primarily of the 19th century. British audiences are well aware of the landscape tradition of Constable and Turner. This landmark exhibition introduces skilled and innovative practitioners of this discipline from the same period but from elsewhere in Europe, many of whom enjoyed great reputations during their lifetimes. The paintings are of two principal kinds: small-scale landscape oil sketches and ‘finished’ paintings, some very large. The works demonstrate the similarities of the Norwegian and