The use of the term “moat wall” has been decided on for the massive brickwork of the fosse in preference to the word revetment as more accurately expressing the nature of the construction, although the expression is not used in describing modern fortifications. AGNES S. JOHNS. CAMBRIDGE, _April 1914_. CONTENTS PAGE 1. THE OUTER CITY WALLS 1 1. THE MOUND BABIL. CANALS. BRICK ROBBERS 6 1. GENERAL VIEW OF THE CITY 12 1. THE EUPHRATES AND ITS COURSE 16 1. THE KASR. THE ASCENT AND PROCESSION STREET 23 1. THE ISHTAR GATE. THE EXPANSION JOINT 31 1. THE WALL DECORATIONS OF BULLS AND DRAGONS 38 1. THE PROCESSION STREET SOUTH OF THE ISHTAR GATE 49 1. THE TEMPLE OF NINMACH. MUD WALLS LAID WITH REEDS 55 10. THE SOUTHERN CITADEL 65 11. THE EAST FRONT OF THE SOUTHERN CITADEL 68 12. THE EASTERN COURT OF THE SOUTHERN CITADEL 72 13. THE CENTRAL COURT OF THE SOUTHERN CITADEL 90 14. THE VAULTED BUILDING. HANGING GARDENS OF SEMIRAMIS 91 15. THE PRINCIPAL COURT OF THE SOUTHERN CITADEL 100 16. THE PALACE OF NABOPOLASSAR 113 17. THE FORTIFICATION WALLS TO THE NORTH AND SOUTH OF THE PALACE OF NABOPOLASSAR 121 18. THE WESTERN EXTENSION 125 19. THE PERSIAN BUILDING. PERSIAN ENAMELLED BRICKS 127 20. THE WALLS OF THE FORTIFICATIONS AND QUAYS TO THE WEST AND NORTH OF THE SOUTHERN CITADEL 131 21. THE MOAT WALL OF IMGUR-BEL 132 22. THE ARACHTU WALL OF NABOPOLASSAR AND THE WALL OF SARGON THE ASSYRIAN 137 23. THE WESTERN OUTWORKS 144 24. THE THREE GREAT FORTIFICATION WALLS NORTH OF THE SOUTHERN CITADEL 145 25. THE INNER CITY WALL. NIMITTI-BEL CYLINDER 150 26. THE PRINCIPAL CITADEL. THE BASALT LION 156 27. THE FORTIFICATION WALLS OF THE PRINCIPAL CITADEL 169 28. THE NORTHERN CITADEL 174 29. RETROSPECT OF THE KASR 181 30. THE PERIBOLOS OF ETEMENANKI. THE TOWER OF BABEL 183