THREE:For several weeks the Austrians slowly and sullenly retired. Their retreat was conducted in two immense columns, by parallel roads at some distance from each other. Their wings of foragers and skirmishers were widely extended, so that the hungry army swept with desolation a breadth of country reaching out many leagues. Though the Austrian army was traversing the friendly territory of Bohemia, still Prince Charles was anxious to leave behind him no resources for Frederick to glean. Frederick, with his army, pressed along, following the wide-spread trail of his foes. The Austrians, with great skill, selected every commanding position on which to erect their batteries, and hurl back a storm of shot and shell into the bosoms of their pursuers. But Frederick allowed them no rest by day or by night. His solid columns so unremittingly and so impetuously pressed with shot, bullets, bayonet, and sabre-blows upon the rear ranks of the foe that there was almost an incessant battle, continuing for several weeks, crimsoning a path thirty miles wide and more than a hundred miles in length with the blood of the wounded and the slain.The zealous bishop, perhaps not unwilling to secure the crown of martyrdom, pressed on, preaching the Gospel, in face of prohibitions and menaces, until he entered one of the sacred inclosures which was a sanctuary of the idols of these heathen. The priests rushed upon him, endeavored to drive him out, and struck him with a dagger in the back of his neck. He uttered but one cry, Jesus, receive me! and, stretching out his arms, fell with his face to the ground, and lay dead there in the form of a crucifix. The place is yet pointed out where Adalbert fell. Still the seeds of Christianity were sown. Other missionaries followed. Idolatry disappeared, and the realm became nominally Christian. Revealed religion introduced increased enlightenment and culture, though there still remained much of the savagery of ancient days.