The ArchesTwenty five surreal collages by John Digby, set in an ornate arch from the Alhambra, suggest a multiplicity of narratives and provide provocative starting points for poet Tony Curtis. Giraffes in slings, a toppling Statue of Liberty, woolly mammoths, an enthroned bull, a monster pear and giant apple, flying fishes, a crazed Noah all are among the many intriguing images to which the poet has responded in The Arches. Like the collages, his poems may ask