De Re Metallica: The Use of Metal in the Middle Ages. By:Robert BorkDe Re Metallica brings together a wide variety of perspectives on metal use in the Middle Ages, a topic that has received less systematic scholarly attention than it deserves, given its central importance for medieval culture. Because of its strength, beauty, and prestige, metal figured prominently in many medieval contexts, from the military and utilitarian to the architectural and liturgical. Metal was a crucial ingredient in weapons and waterpipes,