Art in NatureAn elderly caretaker at a large outdoor exhibition, called Art in Nature, finds that a couple have lingered on to bicker about the value of a picture; he has a surprising suggestion that will resolve both their row and his own ambivalence about the art market. A draughtsman's obsession with drawing locomotives provides a dark twist to a love story. A cartoonist takes over the work of a colleague who has suffered a nervous breakdown only to discover