Page:Historic highways of America (Volume 14).djvu/98

 runs over twenty-eight miles of ground, presenting obstacles much greater than can be expected on the route we purpose. This canal cost 478,000 dollars, which is about 17,000 dollars a mile. It contains 22 locks of solid masonry and excellent workmanship and to accomplish this work, it was necessary to dig in some places to the depth of 20 feet, to cut through ledges of rocks, to fill some vallies and morasses, and to throw several aqueducts across the intervening rivers. One of these across the river Shawshine is 280 feet long, and 22 feet above the river.