Employing studies in population ecology as a framework for understanding the growth of religious movements, Disfellowshiped traces the growth of the Pentecostal movement. The author explores how the Pentecostal movement developed in relationship to Fundamentalism from its roots in the Holiness movement to the formation of the National Association of Evangelicals. Particular attention is given to the various critiques and rebuttals exchanged between Fundamentalists and Pentecostals, exploring how these two movements influenced and shaped one another. This book shows how, despite their mutual antagonism, these two movements held far more in common than in contrast. This book will be of great importance to all those interested in the history of Fundamentalism and the rise of Pentecostalism.