...etermined to persevere, and appointed Mr. Samuel Thompson, of Woburn, who began his work, and proceeded from Medford River, following up the river to Mystic Pond, through the pond and Symms' River to Horn Pond in Woburn, and through said pond to the head thereof. Meeting here bars they could neither let down nor remove, they went back to Richardson's Mill on Symms' River, and passed up the valley throu...