Since the heroic age of Pierre Duhem, to whose amazing energy and learning we owe the revelation of medieval science, much work has been devoted to the study of that subject. The publication of the great works of Thorndyke and Sarton, and, in the last decade, of the brilliant studies of Anneliese Maier and Professor Marshall Clagett, not to mention countless other monographs and papers, has tremendously enlarged and enriched our knowledge and understanding of medieval science in its connection with medieval philosophy-toward whose understanding and knowledge even greater progress has been made-and of medieval culture in general.