The history of genres, or kinds, of drama is one of contradictory traditions and complex cultural assumptions. The divisions established by the original edition of Mr. William Shakespeare's Comedies, Histories, and Tragedies (the First Folio, 1623) give shape to whole curricula; but, as Lawrence Danson reminds us in this lively book, there is nothing inevitable, and much unsatisfying, about that tripartite scheme. Yet students of Shakespeare cannot avoid thinking about questions of genre; often they are the unspoken reason why classrooms full of smart people fail to agree on basic...