Читать книгу Highways and Highway Transportation - George R. Chatburn - Страница 24
Pre-historic American Roads.
Оглавление—When America was discovered it was sparsely settled with tribes of semi-civilized peoples. The ordinary aborigine was in the hunting and fishing stage, just beginning to cultivate crops. True, tribes claimed regions and attempted by force to keep other tribes from trespassing thereon. They had no literature save perhaps a few rough diagrams or drawings. There was no trade or commerce and consequently no roads except mere trails. Their methods of transportation consisted in walking or in paddling canoes. In the making and operating of canoes and of weapons of warfare and of the chase they were most advanced.
In many parts of the country there had been a civilization, but so long ago no very authentic knowledge of its character can be predicated upon the mounds, utensils, and other evidence now remaining. The Mound Builders and the Cliff Dwellers are as yet to us unknown peoples.
In Mexico, Central America,[13] and Peru a much higher civilization prevailed. Especially in Peru where a very high state of agriculture was in vogue. There is even evidence of a considerable degree of Art and Literature.[14] Many of the remains remind one of early Egyptian and Persian temples and roads, but perhaps no more lucid description of the ancient Peruvian roads and transportation exists than that given in Prescott’s justly celebrated classic, “The Conquest of Peru.” Slightly abridged it reads thus:
Those who may distrust the accounts of Peruvian industry will find their doubts removed on a visit to the country. The traveler still meets, especially in the central regions of the tableland, with memorials of the past, remains of temples, palaces, fortresses, terraced mountains, great military roads, aqueducts, and other public works, which, whatever degree of science they may display in their execution, astonish him by their number, the massive character of the materials, and the grandeur of the design. Among them, perhaps the most remarkable are the great roads, the broken remains of which are still in sufficient preservation to attest their former magnificence. There were many of these roads, traversing different parts of the kingdom: but the most considerable were the two which extended from Quito to Cuzco, and, again diverging from the capital, continued in a southerly direction toward Chili.
One of these roads passed over the great plateau, and the other along the lowlands on the borders of the ocean. The former was much the more difficult achievement, from the character of the country. It was conducted over pathless sierras buried in snow; galleries were cut for leagues through the living rock; rivers were crossed by means of bridges that swung suspended in the air; precipices were scaled by stairways hewn out of the native bed; ravines of hideous depths were filled up with solid masonry; in short, all the difficulties that beset a wild and mountainous region, and which might appall the most courageous engineer of modern times, were encountered and successfully overcome. The length of the road, of which scattered fragments only remain, is variously estimated at from fifteen hundred to two thousand miles; and stone pillars, in the manner of European milestones, were erected at stated intervals of somewhat more than a league, all along the route. Its breadth scarcely exceeded twenty feet. It was built of heavy flags of freestone, and, in some parts at least, covered with a bituminous cement, which time has made harder than the stone itself. In some places where the ravines had been filled up with masonry, the mountain torrents, wearing on it for ages, have gradually eaten away through the base, and left the superincumbent mass—such is the cohesion of the materials—still spanning the valley like an arch.
Over some of the boldest streams it was necessary to construct suspension bridges, as they are termed, made of the tough fibers of the maguey, or of the osier of the country, which has an extraordinary degree of tenacity and strength. These osiers were woven into cables of the thickness of a man’s body. The huge ropes, then stretched across the water, were conducted through rings or holes cut in immense buttresses of stone raised on the opposite banks of the river and then secured to heavy pieces of timber. Several of these enormous cables bound together formed a bridge which, covered with planks, well secured and defended by a railing of the same osier materials on the sides, afforded a safe passage for the traveler. The length of this aerial bridge, sometimes exceeding two hundred feet, caused it, confined as it was only at the extremities, to dip with an alarming inclination towards the center, while the motion given to it by the passenger occasioned an oscillation still more frightful, as his eye wandered over the dark abyss of waters that foamed and tumbled many fathoms beneath. Yet these light and fragile fabrics were crossed without fear by the Peruvians, and are still retained by the Spaniards over those streams which, from the depth or impetuosity of the current, would seem impracticable for the usual modes of conveyance. The wider and more tranquil waters were crossed on balsas—a kind of raft still much used by the natives—to which sails were attached, furnishing the only instance of this higher kind of navigation among the American Indians.
The other great road of the Incas lay through the level country between the Andes and the ocean. It was constructed in a different manner, as demanded by the nature of the ground, which was for the most part low, and much of it sandy. The causeway was raised on a high embankment of earth, and defended on either side by a parapet or wall of clay; and trees and odoriferous shrubs were planted along the margin, regaling the senses of the traveler with their perfumes, and refreshing him by their shades, so grateful under the burning sky of the tropics. In the strips of sandy waste which occasionally intervened, where the light and volatile soil was incapable of sustaining a road, huge piles, many of them to be seen at this day, were driven into the ground to indicate the route to the traveler.
All along these highways, caravansaries, or tambos, as they were called, were erected, at the distance of ten or twelve miles from each other, for the accommodation, more particularly of the Inca and his suite and those who journeyed on the public business. There were few other travelers in Peru. Some of these buildings were on an extensive scale, consisting of a fortress, barracks, and other military works, surrounded by a parapet of stone and covering a large tract of ground. These were evidently destined for the accommodation of the imperial armies when on their march across the country. The care of the great roads was committed to the districts through which they passed, and under the Incas a large number of hands was constantly employed to keep them in repair. This was the more easily done in the country where the mode of traveling was altogether on foot; though the roads are said to be so nicely constructed that a carriage might have rolled over them as securely as on any of the great roads of Europe. Still in a region where the elements of fire and water are both actively at work in the business of destruction, they must, without constant supervision, have gradually gone to decay. Such has been their fate under the Spanish conquerors, who took no care to enforce the admirable system for their preservation adopted by the Incas. Yet the broken portions that still survive here and there, like the fragments of the great Roman roads scattered over Europe, bear evidence to their primitive grandeur, and have drawn forth the eulogium from a discriminating traveler, usually not too profuse in his panegyric, that “the roads of the Incas were among the most useful and stupendous works ever executed by man.”
The system of communication through their dominions was still further improved by the Peruvian sovereigns by the introduction of posts, in the same manner as was done by the Aztecs. The Peruvian posts, however, established on all the great routes that conducted to the capital, were on a much more extended plan than those in Mexico. All along these routes, small buildings were erected, at the distance of less than five miles asunder, in each of which a number of runners, or chasquis, as they were called, were stationed to carry forward the dispatches of government. These dispatches were either verbal, or conveyed by means of quipus, and sometimes accompanied by a thread of the crimson fringe worn round the temples of the Inca, which was regarded with the same implicit deference as the signet-ring of an Oriental despot.
The chasquis were dressed in a peculiar livery, intimating their profession. They were all trained to the employment and selected for their speed and fidelity. As the distance each courier had to perform was small, and as he had ample time to refresh himself at the stations, they ran over the ground with great swiftness, and messages were carried through the whole extent of the long routes, at the rate of one hundred and fifty miles a day. The office of the chasquis was not limited to carrying dispatches. They frequently brought various articles for the use of the court and in this way fish from the distant ocean, fruits, game, and different commodities from the hot regions on the coast, were taken to the capital in good condition, and served fresh at the royal table. It is remarkable that this important institution should have been known to both the Mexicans and the Peruvians without any correspondence with one another and that it should have been found among two barbarian nations of the New World long before it was introduced among the civilized nations of Europe.
By these wise contrivances of the Incas, the most distant parts of the long extended empire of Peru were brought into intimate relations with each other. The while the capitals of Christendom, but a few hundred miles apart, remained as far asunder as if seas had rolled between them, the great capitals Cuzco and Quito were placed by the high roads of the Incas in immediate correspondence. Intelligence from the numerous provinces was transmitted on the wings of the wind to the Peruvian metropolis, the great focus to which all the lines of communication converged. Not an insurrectionary movement could occur, not an invasion on the remotest frontier, before the tidings were conveyed to the capital and the imperial armies were on their march across the magnificent roads of the country to suppress it. So admirable was the machinery contrived by the American despots for maintaining tranquillity throughout their dominions! It may remind us of the similar institutions of ancient Rome, when, under the Caesars, she was mistress of half the world.
Hiram Bingham, Director of the Geographic Society-Yale Peruvian Expedition[15] gives an interesting description of the tracing out of two of these old roads. Evidently the trail was mostly used by foot passengers, or possibly llamas, for there were frequently steep grades and flights of steps and open ravines which had more than likely been crossed by the osier suspension bridges. No doubt much commerce beside fertilizer from the great nitrate beds was carried on over these roads.