1 (return) [ They were originally nine or ten thousand men, (for Tacitus and son are not agreed upon the subject,) divided into as many cohorts. Vitellius increased them to sixteen thousand, and as far as we can learn from inscriptions, they never afterwards sunk much below that number. See Lipsius de magnitudine Romana, i. 4.] 2 (return) [ Sueton. in August. c. 49.] 3 (return) [ Tacit. Annal. iv. 2. Sueton. in Tiber. c. 37. Dion Cassius, l. lvii. p. 867.] 4 (return) [ In the civil war between Vitellius and Vespasian, the Prætorian camp was attacked and defended with all the machines used in the siege of the best fortified cities. Tacit. Hist. iii. 84.] 5 (return) [ Close to the walls of the city, on the broad summit of the Quirinal and Viminal hills. See Nardini Roma Antica, p. 174. Donatus de Roma Antiqua, p. 46. * Note: Not on both these hills: neither Donatus nor Nardini justify this position. (Whitaker’s Review. p. 13.) At the northern extremity of this hill (the Viminal) are some considerable remains of a walled enclosure which bears all the appearance of a Roman camp, and therefore is generally thought to correspond with the Castra Prætoria. Cramer’s Italy 390.—M.] Such formidable servants are always necessary, but often fatal to the throne of despotism. By thus introducing the Prætorian guards as it were into the palace and the senate, the emperors taught them to perceive their own strength, and the weakness of the civil government; to view the vices of their masters with familiar contempt, and to lay aside that reverential awe, which distance only, and mystery, can preserve towards an imaginary power. In the luxurious idleness of an opulent city, their pride was nourished by the sense of their irresistible weight; nor was it possible to conceal from them, that the person of the sovereign, the authority of the senate, the public treasure, and the seat of empire, were all in their hands. To divert the Prætorian bands from these dangerous reflections, the firmest and best established princes were obliged to mix blandishments with commands, rewards with punishments, to flatter their pride, indulge their pleasures, connive at their irregularities, and to purchase their precarious faith by a liberal donative; which, since the elevation of Claudius, was enacted as a legal claim, on the accession of every new emperor. 6