The Delaware River above Trenton is for miles a stream of alternating pools and rapids, with canals on either side, passing frequent villages and displaying pleasant scenery as it breaks through the successive ridges in its approach to the mountains. Alongside the river, in Solebury, Bucks County, in the early part of the eighteenth century, was the humble home of the pioneer and hunter, Edward Marshall, who made the fateful "walk" of 1737, the injustice of which so greatly provoked the Indians, and was a chief cause of the most savage Indian War of Colonial times. All the country west of the Delaware, as far up as the mouth of the Lackawaxen River, was obtained from the Indians by the deception of this "walk." The Indians in those early times measured their distances by "days' journeys," and in various treaties with the white men transferred tracts of land by the measurement of "days' walks." William Penn had bought the land as far up as Makefield and Wrightstown in Bucks County, and after his death his descendants, Thomas and Richard Penn, became anxious to enlarge the purchase, and this "walk" was the result. After a good deal of preliminary negotiation, several sachems of the Lenni Lenapes were brought to Philadelphia, and on August 25, 1737, made a treaty ceding additional lands beginning "on a line drawn from a certain spruce tree on the river Delaware by a west-northwest course to Neshaminy Creek; from thence back into the woods as far as a man can go in a day and a half, and bounded in the west by Neshaminy or the most westerly branch thereof, so far as the said branch doth extend, and from thence by a line to the utmost extent of the day and a half's walk, and from thence to the aforesaid river Delaware; and so down the courses of the river to the first-mentioned spruce tree." The Indians thought this "walk" might cover the land as far north as the Lehigh, but there was deliberate deception practiced. An erroneous map was exhibited indicating a line extending about as far north as Bethlehem on the Lehigh, and this deceived the Indians. The white officials had previously been quietly going over the ground far north of the Lehigh, blazing routes by marking trees, all of which was carefully concealed, and Marshall and others had been employed on these "trial walks." A reward of five hundred acres of land was promised the walkers.