The correct technical term for the Irish novelist Colm Toíbín’s entertaining tour of James Joyce’s Dublin (2 February) is ­“psycho-geography”. As a psycho-geographer determined to mark the centenary of Dubliners, and sharply aware of his hero’s “particularity of place”, Toíbín began with a confession. Arriving at University College Dublin at the age of 17, he and his compatriots were much keener on Hemingway, Sartre and the productions of the Parisian Left Bank. With the exception of “The Dead”, a proper appreciation of Joyce’s merits had to wait until his more circumspect twenties.Walking with the Dead was full of personal touches of this sort. John Banville, set down in the convivial setting of M