ch some works of Galen's are
lost.

192. Murder of Commodus.

193. Pertinax elected emperor by the Roman senate; he is later
assassinated by the praetorians. The Imperial dignity is purchased by
Didius Julianus; he is slain the same year. Albinus in Britain, Niger in
Syria, and Septimus Severus in Pannonia are proclaimed emperors by their
respective legions. Fall of Didius Julianus and accession of Severus.

194. In the East, Severus triumphs over his rival, Niger. Byzantium
resists Severus.

196. Byzantium falls before Severus.

197. Albinus in Gaul is crushed by Severus.

198. Septimus Severus proceeds against the Parthians; he besieges and
captures Ctesiphon.

208. Successful campaign of Severus against the Caledonians in Britain
and Caledonia.

211. Death of Septimus Severus at York; his sons Caracalla and Geta
succeed him.

212. Caracalla slays his brother Geta.

213. Caracalla, universally detested for his cruelties, goes into Gaul
and assumes the surname of Germanicus. He leads the first attack of the
Romans against the Alemanni.

215. Having proceeded through Dacia, Thrace, and Antioch to Alexandria,
Caracalla orders a massacre of the Egyptians.

216. By a delusive offer of marriage with the daughter of Artabanus,
Caracalla decoys the Parthians into his camp, where he treacherously
attacks and slays a great number of them.

217. Caracalla is assassinated; Macrinus is proclaimed emperor; he
purchases peace with the Parthians. Julia Domna, the mother of Caracalla
and Geta, being banished to Antioch, starves herself to death.

218. Macrinus is overthrown by Elagabalus, who succeeds him as emperor
of Rome. This was accomplished by Moesa, sister of Julia Domna,
bribing a portion of the army to espouse the cause of her grandson
Elagabalus.

219. Elagabalus arrives at Rome; he brings with him his Syrian idol,
which he places in a stately temple.

220. The highest offices of the State are filled by Elagabalus with his
vilest associates.

222. Alexander Severus (Alexianus) succeeds Elagabalus, who is slain by
the praetorians; his mother, Sooemias, is killed with him.

223. All persecution of the Christians ceases in Rome.

Alexander Severus guided by his mother, Marnaea, who is created augusta.

224. The Persians, under Ardashir (known by the Greeks as Artaxerxes),
revolt against the Parthians.

225. Marriage of Alexander Severus to Sulpitia Memmia.

226. Ardashir overthrows the Parthian kin