Summary The Decapolis city of Jerash has long attracted attention from travellers and scholars, due both to the longevity of the site and the remarkable finds uncovered during successive phases of excavation that have taken place from 1902 onwards. Between 2011 and 2016, a Danish-German team, led by the universities of Aarhus and Münster, focused their attention on the Northwest Quarter of Jerash ? the highest point within the walled city ? and this is the fourth in a series of books presenting the team's final results. This two-part set offers a comprehensive presentation of Jerash's rich building heritage from the Late Hellenistic period up to the city's destruction in the mid-eighth century ad through a discussion of architectural elements, together with analysis of the mosaics, wall paintings, and building ceramics excavated from the Northwest Quarter. As well as providing a general overview of the city's changing patterns of habitation, the contributions gathered here also include close case- studies and object biographies that shed new light on the intense use, reuse, and recycling of materials that testify to evolving urban practices and optimization of resources across the Roman, Byzantine, and Islamic periods. TABLE OF CONTENTS Volume 1: Architecture and Building Ceramics Contextualizing Finds from Complex Urban Archaeological Contexts: Methodological Considerations on the Architectural Elements, Building Materials, and Mosaics from the Northwest Quarter (2011-2016) ? ACHIM LICHTENBERGER AND RUBINA RAJA Architectural Elements from the Northwest Quarter of Jerash ? PATRIC-ALEXANDER KREUZ Byzantine Interior Decorational Elements from the Northwest Quarter ? ACHIM LICHTENBERGER AND RUBINA RAJA A Monumental Architectural Limestone Block with Altar Iconography ? ACHIM LICHTENBERGER AND RUBINA RAJA Ceramic Building Materials from the Northwest Quarter ? PHILIP EBELING An Archaeo-Scientific Analysis of Building Ceramics from the Northwest Quarter ? PHILIP EBELING AND GRY H. BARFOD 'Misfired' Ceramic Tegulae from the Northwest Quarter ? GRY H. BARFOD, PHILIP EBELING, AND CHARLES E. LESHER Volume 2: Wall Paintings and Mosaics Wall Paintings from the Northwest Quarter of Jerash: Roman to Middle Islamic Periods ? KRISTINE DAMGAARD THOMSEN The Colour Palette of the Northwest Quarter: Geochemical Evidence from Pigments Used on Roman and Early Islamic Wall Decorations ? GRY H. BARFOD The Mosaics: In-situ Floors and Fragments in Jerash ? WILLIAM T. WOOTTON Mosaic Glass Tesserae from the Northwest Quarter of Jerash ? CRISTINA BOSCHETTI AND WILLIAM T. WOOTTON About the Authors