His travels 310

His death 312

Antoninus Pius 313

His excellent character 313

Marcus Aurelius 314

His conduct 315

He defeats the Barbarians 316

The depraved Commodus 316

His vices 316

Is assassinated 316

CHAPTER XLII.

FROM PERTINAX TO DIOCLETIAN. A.D. 192-284.

Pertinax made emperor 319

Is assassinated 319

Didius Julianus 319

Severus 320

His severe rule 320

Geta and Caracalla 321

Papinian executed 321

Cruelties of Caracalla 322

Elagabalus 322

Alexander Severus 322

Maximin 323

The Goths invade the empire 324

Valerian 325

Thirty tyrants 325

Zenobia 325

Aurelian 325

The Emperor Tacitus 326

Frugal habits of Carus 326

CHAPTER XLIII.

FROM DIOCLETIAN, A.D. 284, TO CONSTANTINE'S DEATH, A.D. 337.

Diocletian 327

His colleagues