Previous articleNext article No AccessNew Biological BooksIntroduction to the History of Science. Volume III. Science and Learning in the Fourteenth Century. Part I. The Time of Abu-l-Fida', Levi ben Gerson, and William of Occam. George Sarton Introduction to the History of Science. Volume III. Science and Learning in the Fourteenth Century. Part II. The Time of Geoffrey Chaucer, Ibn Khaldun, and Hasdai Crescas. George Sarton Owsei TemkinOwsei Temkin Search for more articles by this author PDFPDF PLUS Add to favoritesDownload CitationTrack CitationsPermissionsReprints Share onFacebookTwitterLinkedInRedditEmail SectionsMoreDetailsFiguresReferencesCited by The Quarterly Review of Biology Volume 24, Number 3Sep., 1949 Published in association with Stony Brook University Article DOIhttps://doi.org/10.1086/397077 PDF download Crossref reports no articles citing this article.