Part antiphonal rant, part rhythmic whisper, Nathaniel Mackey's new collection of poems, Splay Anthem, takes the reader to uncharted poetic spaces. Divided into three sections--"Braid," "Fray," and "Nub" (one referent Mackey notes in his stellar Introduction: "the imperial, flailing republic of Nub the United States has become, the shrunken place the earth has become, planet Nub")--Splay Anthem weaves together two ongoing serial poems Mackey has been...