We want both leisure and materials to pursue this curious inquiry through the many potent states that were annihilated in the Roman empire. Some notion, however, may be formed of the revenue of the provinces where considerable wealth had been deposited by nature, or collected by man, if we observe the severe attention that was directed to the abodes of solitude and sterility. Augustus once received a petition from the inhabitants of Gyarus, humbly praying that they might be relieved from one third of their excessive impositions. Their whole tax amounted indeed to no more than one hundred and fifty drachms, or about five pounds: but Gyarus was a little island, or rather a rock, of the Ægean Sea, destitute of fresh water and every necessary of life, and inhabited only by a few wretched fishermen. From the faint glimmerings of such doubtful and scattered lights, we should be inclined to believe, 1st, That (with every fair allowance for the differences of times and circumstances) the general income of the Roman provinces could seldom amount to less than fifteen or twenty millions of our money; and, 2dly, That so ample a revenue must have been fully adequate to all the expenses of the moderate government instituted by Augustus, whose court was the modest family of a private senator, and whose military establishment was calculated for the defence of the frontiers, without any aspiring views of conquest, or any serious apprehension of a foreign invasion. Notwithstanding the seeming probability of both these conclusions, the latter of them at least is positively disowned by the language and conduct of Augustus. It is not easy to determine whether, on this occasion, he acted as the common father of the Roman world, or as the oppressor of liberty; whether he wished to relieve the provinces, or to impoverish the senate and the equestrian order. But no sooner had he assumed the reins of government, than he frequently intimated the insufficiency of the tributes, and the necessity of throwing an equitable proportion of the public burden upon Rome and Italy. In the prosecution of this unpopular design, he advanced, however, by cautious and well-weighed steps. The introduction of customs was followed by the establishment of an excise, and the scheme of taxation was completed by an artful assessment on the real and personal property of the Roman citizens, who had been exempted from any kind of contribution above a century and a half.