INTRODUCTION 129 THE FORUM AND BASILICA 131 THE TREASURY, PRISON, AND SENATE HOUSE 137 THE THEATRE: ITS SITE, FOUNDATIONS, AND ACOUSTICS 137 HARMONICS 139 SOUNDING VESSELS IN THE THEATRE 143 PLAN OF THE THEATRE 146 GREEK THEATRES 151 ACOUSTICS OF THE SITE OF A THEATRE 153 COLONNADES AND WALKS 154 BATHS 157 THE PALAESTRA 159 HARBOURS, BREAKWATERS, AND SHIPYARDS 162.