In the fall of the year, after seeding time, every family formed an association with some of their neighbors, for starting the little caravan. A master driver was to be selected from among them, who was to be assisted by one or more young men and sometimes a boy or two. The horses were fitted out with packsaddles, to the latter part of which was fastened a pair of hobbles made of hickory withes,--a bell and collar ornamented their necks. The bags provided for the conveyance of the salt were filled with bread, jerk, boiled ham, and cheese furnished a provision for the drivers. At night, after feeding, the horses, whether put in pasture or turned out into the woods, were hobbled and the bells were opened. The barter for salt and iron was made first at Baltimore; Frederick, Hagerstown, Oldtown, and Fort Cumberland, in succession, became the places of exchange. Each horse carried two bushels of alum salt, weighing eighty-four pounds to the bushel. This, to be sure, was not a heavy load for the horses, but it was enough, considering the scanty subsistence allowed them on the journey. The common price of a bushel of alum salt, at an early period, was a good cow and a calf. Thus, with the English flag afloat at Fort Pitt, as Duquesne was renamed after its capture, a new day dawned for the great region to the West. Beyond the Alleghanies and as far as the Rockies, a new science of transportation was now to be learned--the art of finding the dividing ridge. Here the first routes, like the "Great Trail" from Pittsburgh to Detroit, struck out with an assurance that is in marvelous agreement with the findings of the surveyors of a later day. The railways, when they came, found the valleys and penetrated with their tunnels the watersheds from the heads of the streams of one drainage area to the streams of another. Thus on the Pennsylvania, the Baltimore and Ohio, the Southern, the Chesapeake and Ohio, and other railroads, important tunnels are to be found lying immediately under the Red Man's trail which clung to the long ascending slope and held persistently to the dividing ridges. Even this necessarily brief survey shows plainly how that preëminently American institution, the ridge road, came about. East and west, it was the legitimate and natural successor to the ancient trail. With the coming of the wagon, whose rattle was heard among the hills as early as Braddock's campaign, the process of lowering these paths from the heights was inevitably begun, and it was to the riverways that men first looked for a solution of the difficult problems of inland commerce. Eventually the paths of inland commerce constituted a vast network of canals, roads, and railway lines in those very valleys to which Washington had called the nation's attention in 1784. CHAPTER III The Mastery of the Rivers