Before we came to the detailed method in which these fifteen motor-truck chasses are being operated, consider for a longer moment the peculiar topographical layout of Cincinnati: On that narrow shelf of flats or bottoms between the high hills and the river in which the older portion of the city is tightly built are situated the greater portion of its industries. There it is that its business life centers. There it is then that its railroad terminals have also been centered since first the locomotive poked his way down to the banks of the Ohio. And since they have expanded to almost every square inch of available territory. To the east end of this long and narrow strip come the Panhandle lines of the Pennsylvania system, the Louisville and Nashville's main-stem and the Norfolk and Western railroad. At its western end are grouped the Kentucky Central division of the Louisville and Nashville, the Queen and Crescent lines of the Southern system, the Baltimore and Ohio reaching east, north, and west on four important stems, the Chesapeake and Ohio, and the Big Four lines of the New York Central. The volume of traffic which these lines bring into Cincinnati and take out of her crowded heart is vast indeed, and growing rapidly year by year. Not only is the local traffic a thing to reckoned in many thousands of tons, but the fact that there are three railroad bridges there across the Ohio, each carrying at least one important through route to the South, means a vast amount of through freight to go through that gateway--and much of it there to be transferred, which further complicates the situation.