A new history of dance in the 20th Century takes an unusual line for a history book. “Although everyone will be using the book for reference, Nancy Reynolds and Malcolm McCormick have produced a work that is completely unlike a standard reference book; you don’t just look things up in it — you read it. Here is a coherent, reasoned and entertaining chronicle of dance performance in the West over the hundred years that are unquestionably the fullest and most complicated in the long history of this fragmented and elusive art.”