The Lehigh River flows out of the Alleghenies through a deep and tortuous valley which rends the mountain ridges until it strikes against the South Mountain range, here called the Durham Hills, and then turns northeast along its base to the Delaware. At this bend the Saucon Creek comes in from the south and the Monocacy Creek from the north, and here, twelve miles from Easton, is Bethlehem. This manufacturing town of twenty thousand population is one of the noted places of the Lehigh Valley. A large part of the lowlands along the river are occupied by the extensive works of the Bethlehem Steel Company, where the big guns, armor and crank-shafts are made for the navy, while on the slopes of the South Mountain are the noble buildings of the Lehigh University, the munificent benefaction of Asa Packer, supporting four hundred students of the technical studies developing mining and railways. On the hill slopes of the northern river bank is the original Moravian town, oddly built of bricks and stone, with a steep slate roof on nearly every house. It was one of the earliest and the most important of the settlements in America of the refugee followers of John Huss, the "Congregation of the United Brethren," and for a century was under its absolute government. In the winter of 1740 the first trees were cut down that formed the log hut which was the first house on this part of the Lehigh. Count Zinzendorf, their leader, arrived from Moravia, with his young daughter Benigna, before the second house was built, and celebrated with the settlers the Christmas Eve of 1741. They had called the place Beth-Lechem, "the house upon the Lehigh," but it is related that towards midnight on this occasion Zinzendorf, becoming deeply moved, seized a blazing torch and earnestly sang a German hymn: "Not Jerusalem--lowly Bethlehem 'Twas that gave us Christ to save us."