consequence of the assassination of Commodus was the elevation of Pertinax to the throne, and his murder eighty-six days after (_Decline and Fall_, i. 60). Then followed the public setting-up of the empire to sale by the pretorian guards, and its purchase by a wealthy Roman senator, Didius Julianus, or Julian, who, “on the throne of the world, found himself without a friend and without an adherent,” i. 63. “The streets and public places in Rome resounded with clamours and imprecations.” “The public discontent was soon diffused from the centre to the frontiers of the empire,” i. 63. In the midst of this universal indignation Septimius Severus, who then commanded the army in the neighbourhood of the Danube, resolved to avenge the death of Pertinax, and to seize upon the imperial crown. He marched to Rome, overcame the feeble Julian, and placed himself on the throne. Julian, after having reigned sixty-six days, was beheaded in a private apartment of the baths of the palace, i. 67. “In less than four years Severus subdued the riches of the East, and the valour of the West. He vanquished two competitors of reputation and ability, and defeated numerous armies provided with weapons and discipline equal to his own,” i. 68. Mr. Gibbon then enters into a detail of “the two _civil wars_ against Niger and Albinus”――rival competitors for the empire (i. 68‒70), both of whom were vanquished, and both of whom were put to death “in their flight from the field of battle.” Yet he says, “Although the wounds of civil war were apparently healed, its mortal poison still lurked in the vitals of the constitution,” i. 71. After the death of Severus, then follows an account of the contentions between his sons, Geta and Caracalla, and of the death of the former by the instigation of the latter (i. 77); then of the remorse of Caracalla, in which it is said that “his disordered fancy often beheld the angry forms of his father and his brother rising into life to threaten and upbraid him” (i. 77); then of the cruelties which Caracalla inflicted on the friends of Geta, in which “it was computed that, under the vague appellation of the friends of Geta, above twenty thousand persons of both sexes suffered death” (i. 78); then of the departure of Caracalla from the capital, and his cruelties in other parts of the empire, concerning which Mr. Gibbon remarks (i. 78, 79), that “Caracalla was the common enemy of mankind. Every province was by turns the scene of his rapine and cruelty. In the midst of peace and repose, upon the slightest provocation, he issued his commands at Alexandria in Egypt for a general massacre. From a secure post in the temple of Serapis he viewed and directed the slaughter of many thousand citizens, as well as strangers, without distinguishing either the number or the crime of the sufferers,” &c. Then follows the account of the assassination of Caracalla (i. 80); then, and in consequence of that, of the civil war