In Rome, it had been customary to bore a well where water was wanted, but the water was so impure, that it soon became necessary to let well alone. The science of engineering, aided by that great moral engine, their own energy, enabled the inhabitants to bring their supplies from a considerable distance, and as the aqueducts were gradually sloped, the water followed, as it were, its own inclination in coming to Rome. Filtration was ingeniously provided for, at convenient distances, by reservoirs having two compartments, into one of which the water fell, and passing into the other before returning to the main body, there was time for the deposit of all impurities. Every precaution was taken against the intrusion of those unhappy families of animalculæ, which are continually tearing each other to pieces in every drop of the London element, and whose voracity seems to hold out a faint hope that, as they are continually demolishing each other, they may be all mutually swallowed, before the supply of the Metropolis with pure water is achieved. During the Censorship of Appius Claudius, the cause of literature, or at least the dignity of the profession of a public writer, was advanced--though, perhaps, we ought rather to say, that official employment was honoured--by the promotion of Cn. Flavius, a scribe, to the Curule Ædileship. This individual appears to have possessed the happy gift of investing dry subjects with the garb of popularity; and he had won considerable reputation by giving the forms of legal actions in a shape that rendered them comprehensible to the general reader. He made law legible in his work on _legis actiones_, and had assisted the spread of information by an almanack or calendar, in which the _dies fasti_ and _nefasti_ were marked down, and other information afforded which could only have been obtained previously from the pontiffs. The lawyers and the priests, who were less liberal in those days than in our own, were both enraged with an author who had laid open the mysteries of both professions by a few happy touches of his pen; and on his being called upon to give the public the benefit of his services as a curule ædile, they appealed to the miserable prejudice existing against a man who had shown talent in one line, when called upon to exert his abilities in some new direction. The nobility were especially affected at the prospect of the public service being thrown open to merit alone, instead of gentle or gentile dulness being allowed the sole use and abuse of official honour and emolument. Exclusiveness and illiberality could not, even in those days, wholly prevail, though the opponents of the public writer succeeded in causing him to abandon not only his literary pursuits, but to give up all his books, and thus render himself emblematically on a par with themselves in ignorance, by divesting himself of the types of knowledge on his acceptance of office.