 As with all of de Camp's "Krishna" novels, the component parts of this collection have a "Z" in them, a practice he claimed to have devised to keep track of them.Short stories in the series do not follow the practice, nor do "Viagens Interplanetarias" works not set on Krishna.Missionary Althea Merrick, fleeing from an unwanted marriage to a "Viagens" official, joins a scientist and poet en route to a utopian Terran colony on the island of Zesh, where she becomes embroiled in the affairs of some peculiarly intelligent aborigines.