Almost all the highways of Italy were erected on a foundation four feet deep; when a space of marshy ground or bog was on the track of the road, it was filled up; and when any part of it was mountainous, its pretipitousness was reduced to a gentle and trifling inclination from the general line of the road. In many parts, the roads were supported by solid walls.
Upon the four feet of masonry, were placed large hewn stones of marble, nearly one foot in thickness, and frequently ten feet wide; they were indented by the chisel to prevent the slipping of the horses. It was difficult to say which most attracted admiration—the utility or the magnificence of these astonishing works.
Nearly all of these wonderful constructions were raised at the public expense. Cæsar repaired and extended the Appian way out of his own private funds; those funds, however, consisted of the money of the republic.
Who were the persons employed upon these works? Slaves, captives taken in war, and provincials that were not admitted to the distinction of Roman citizens. They worked by "corvée," as they do in France and elsewhere; but some trifling remuneration was allowed them.
Augustus was the first who joined the legions with the people in labors upon the highways of the Gauls, and in Spain and Asia. He penetrated the Alps by the valley which bore his name, and which the Piedmontese and the French corruptly called the "Valley of Aöste." It was previously necessary to bring under subjection all the savage hordes by which these cantons were inhabited. There is still visible, between Great and Little St. Bernard, the triumphal arch erected by the senate in honor of him after this expedition. He again penetrated the Alps on another side leading to Lyons, and thence into the whole of Gaul. The conquered never effected for themselves so much as was effected for them by their conquerors.
The downfall of the Roman Empire was that of all the public works, as also of all orderly police, art, and industry. The great roads disappeared in the Gauls, except some causeways, "chaussées," which the unfortunate Queen Brunehilde kept for a little time in repair. A man could scarcely move on horseback with safety on the ancient celebrated ways, which were now becoming dreadfully broken up, and impeded by masses of stone and mud. It was found necessary to pass over the cultivated fields; the ploughs scarcely effected in a month what they now easily accomplish in a week. The little commerce that remained was limited to a few woollen and linen cloths, and some wretchedly wrought hardwares, which were carried on the backs of mules to the fortifications or prisons called "châteaux" situated in the midst of marshes, or on the tops of mountains covered with snow.
Whatever travelling was accomplished—and it could be but little—during the severe seasons of the year, so long and so tedious in northern climates, could be effected only by wading through mud or climbing over rocks. Such was the state of the whole of France and Germany down to the middle of the seventeenth century. Every individual wore boots; and in many of the cities of Germany the inhabitants went into the streets on stilts.
At length, under Louis XIV., were begun those great roads which other nations have imitated. Their width was limited to sixty feet in the year 1720. They are bordered by trees in many places to the extent of thirty leagues from the capital, which has a most interesting and delightful effect. The Roman military ways were only sixteen feet wide, but were infinitely more solid. It was necessary to repair them every year, as is the practice with us. They were embellished by monuments, by military columns, and even by magnificent tombs; for it was not permitted, either in Greece or Italy, to bury the dead within the walls of cities, and still less within those of temples; to do so would have been no less an offence than sacrilege. It was not then as it is at present in our churches, in which, for a sum of money, ostentatious and barbarous vanity is allowed to deposit the dead bodies of wealthy citizens, infecting the very place where men assemble to adore their God in purity, and where incense seems to be burned solely to counteract the stench of carcasses; while the poorer classes are deposited in the adjoining cemetery; and both unite their fatal influence to spread contagion among survivors.
The emperors were almost the only persons whose ashes were permitted to repose in the monuments erected at Rome.
Highways, sixty feet in width, occupy too much land; it is about forty feet more than necessary. France measures two hundred leagues, or thereabouts, from the mouth of the Rhone to the extremity of Brittany, and about the same from Perpignan to Dunkirk; reckoning the league at two thousand five hundred toises. This calculation requires, merely for two great roads, a hundred and twenty millions of square feet of land, all which must of course be lost to agriculture. This loss is very considerable in a country where the harvests are by no means always abundant.