The revenues of the towns, like those of private individuals, were laid under contribution by the exigencies of power, and were speedily invaded in a still more direct manner. On various occasions, amongst others under Constantine, the emperor took possession of a large number of municipal properties; but the local charges which these properties were intended to meet were, nevertheless, left undiminished. Nay, more, they were increased; as the populace everywhere became more numerous and more disposed to sedition, it became more expensive to feed and amuse them, and greater force was required to keep them in check. The central power, itself overburdened, cast a portion of its load upon the towns. Now, whenever the regular revenues of a town did not suffice to meet its expenditure, the _curia_, that is, the body of wealthy citizens, the decurions, were bound to supply the deficiency from their own private purse. They were, moreover, in almost every place, the collectors of the public taxes, and were responsible for this collection; their private property had to make up for the insolvency of the tax-payers, as well as to supply the deficiency of the communal revenues. The dignity of decurion thus became a cause of ruin; this condition was the most onerous of all social conditions; it was, nevertheless, that of all the well-to-do inhabitants of all the _municipia_ in the empire. Nor was this all; as soon as the position of the decurions became burdensome, there was a tendency to leave it, as well as an advantage in doing so. Exemption from curial functions became a privilege; and this privilege received an ever-increasing extension. The emperors, who disposed of all public dignities and employments, conferred them upon the men and the classes whom they felt it necessary to gain. {189} Thus arose within the State, as a necessary result of despotism, an immense class of privileged persons. In proportion as the revenues of the towns diminished, their burdens augmented, and fell upon the decurions, now fewer in number in consequence of the concession of privilege. It was, however, needful to leave enough to bear the burdens imposed on the _curiæ_. Hence the origin of that long series of laws which make of each _curia_ a prison-house in which the decurions were hereditarily confined; which deprived them, in a multitude of cases, of the free disposal of their property, or even disposed of it without their consent for the benefit of the _curia_; which pursued them into the country, into the army, wherever they attempted to take refuge, in order to restore them to the _curiæ_, from whence they desired to escape: laws, in fine, which bound an immense class of citizens, in property as well as in person, to the most onerous and ungrateful of public services, just as you would compel animals to perform this or that species of domestic labour. Growth Of Christianity.