Traces of a powerful Roman state, 139 The number of the centuries doubled, 140 Etruscans, 141 Tyrrhenians, 143 Cæles Vibenna, 154 SERVIUS TULLIUS. Mastarna, 155 Constitution of Servius Tullius, 157 _Gentes_, 159 Curies, 161 Clients, 170 Tribes, 172 Centuries, 174 Census, 179 Further legislation of Servius Tullius, 184 Relation to the Latins, 185 Enlargement of the city, 187 Tunnel, 189 Wall of Servius Tullius, 190 The legend of Mastarna criticised, 190 L. TARQUINIUS SUPERBUS, 193 War with the Latins, 195 Alliance with Carthage, 195 Military system, 197 THE REFUGIUM. ROME A REPUBLIC, 198 L. Junius Brutus, 198 Abolition of the regal dignity, 202 The consulate, 203 Valerius Poplicola. The Valerian laws, 207 Porsena, 208 War of the Etruscans against Rome, 210 Mucius Scævola, 210 Peace of Porsena. Reduction of the tribes, 212 The Latins take the position of equals, 214 Battle at the Regillus, 216 Isopolity, 219 League of Sp. Cassius; union of the Romans, Latins and Hernicans, 219 Dictatorship, 221 War with the Auruncians, 222 SECESSION OF THE PLEBES. LAW OF DEBT. INSTITUTION OF THE TRIBUNATE, 224