"So numerous are the purposes to which the bark, wood, leaves and blossoms of the lime, or linden, tree can be applied that centuries ago it was called the tree of a thousand uses. Linden is the name by which it is always known on the continent of Europe, and there it is indeed a magnificent tree, forming the most delightful avenues and branching colonnades. One of the principal streets in Berlin is called 'Unter den Linden.' In the Middle Ages, when the Swiss and the Flemings were always struggling for liberty, it was their custom to plant a lime tree on the field of battle, and many of these old trees still remain and have been the subject of ballads and poetical effusions: