The analytic section will be limited to a review of literature on Evolutionism. Heuristic, or discovery, will be a separate section, although analytic, to determine problems that arose concerning Evolutionism in the survey of literature. The analytic survey of literature will review 120 twentieth-century Neo-Scholastics to determine their positions on Evolutionism. All of the subjects of this survey would have had training in scholastic thought. Not all of the subjects of the survey became professional philosophers. Not all of the subjects of the survey wrote books specifically on Evolutionism, or directly on Neo-Scholastic philosophy. Nevertheless, the survey should show how those trained in a Neo-Scholastic manner would approach the modern world, with a problem like Evolutionism, a contemporary reality and an object of great interest.