y over the Germans. The kind cruelty of
Commodus united them in death. [16]

[Footnote 152: This work was on agriculture, and is often quoted by later
writers. See P. Needham, Proleg. ad Geoponic. Camb. 1704.--W.]

[Footnote 16: In a note upon the Augustan History, Casaubon has
collected a number of particulars concerning these celebrated brothers.
See p. 96 of his learned commentary.]

The tyrant's rage, after having shed the noblest blood of the senate,
at length recoiled on the principal instrument of his cruelty. Whilst
Commodus was immersed in blood and luxury, he devolved the detail of the
public business on Perennis, a servile and ambitious minister, who had
obtained his post by the murder of his predecessor, but who possessed a
considerable share of vigor and ability. By acts of extortion, and
the forfeited estates of the nobles sacrificed to his avarice, he had
accumulated an immense treasure. The Praetorian guards were under
his immediate command; and his son, who already discovered a military
genius, was at the head of the Illyrian legions. Perennis aspired to the
empire; or what, in the eyes of Commodus, amounted to the same crime, he
was capable of aspiring to it, had he not been prevented, surprised, and
put to death. The fall of a minister is a very trifling incident in the
general history of the empire; but it was hastened by an extraordinary
circumstance, which proved how much the nerves of discipline were
already relaxed. The legions of Britain, discontented with the
administration of Perennis, formed a deputation of fifteen hundred
select men, with instructions to march to Rome, and lay their complaints
before the emperor. These military petitioners, by their own determined
behaviour, by inflaming the divisions of the guards, by exaggerating
the strength of the British army, and by alarming the fears of Commodus,
exacted and obtained the minister's death, as the only redress of their
grievances. [17] This presumption of a distant army, and their discovery
of the weakness of government, was a sure presage of the most dreadful
convulsions.

[Footnote 17: Dion, l. lxxii. p. 1210. Herodian, l. i. p. 22. Hist.
August. p. 48. Dion gives a much less odious character of Perennis, than
the other historians. His moderation is almost a pledge of his veracity.
Note: Gibbon praises Dion for the moderation with which he speaks of
Perennis: he follows, nevertheless, in his own narrative, Herodian and
Lampridius.