This study, which appeared as Chapter 10a in Volume 4 of the Cambridge Medieval History (Cambridge, 1923), was written by the historian Thomas W. Arnold. Chapter 10a ["Muslim Civilisation during the Abbasid Period"] covers the 8-13th centuries. Topics includes: The Abbasid Empire; Character of the Abbasid dynasty; Decline of the Abbasid Caliphate; Ascendancy of the Buwaihids; The Seljuq Empire; The Mongol Conquests; Muslim political theory; Theory of the Caliphate; Organisation of administrative machinery; The postal system; Censorship of morals: judiciary: army; The Turkish guard; Slavery: commerce; Toleration; Religious persecution; Position of Christians; Literature under the Abbasids; Exegesis: law; Dogmatic systems; Mysticism. Historical Literature; Belles lettres; The encyclopaedists and geographers; Philosophy; Medicine; Mathematics and Astronomy.Includes Title Page, Table of Contents, Chapter 10a (pp. 274-299), Bibliography for Chapter 10a (p. 831-835), Abbreviations, and Chronological Table in 45 pdf pages. Book digitized by Google, article extracted and compiled by Robert Bedrosian.