Charles Cashdollar reinterprets nineteenth-century British and American Protestant thought by identifying positivism as the central intellectual issue of the era. Positivism meant, at first, the ideas of the French thinker Auguste Comte; later in the century, the term indicated a more general opposition to supernatural religion. Cashdollar shows that contemporary thinkers recognized positivism, at each of these stages, as the most fundamental of the proliferating challenges to religious belief. He further reveals how the encounter with positivism altered Protestant orthodoxy--in both...