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,' K, A N S . Crack Willow, Brittle Willow. {Salix fragilis) A tall slender tree, up to 80 feet high. Called "Crack" etc., because its branches are so much broken by the storms; too brittle for basket work, but a favorite for charcoal used in manufacture of gunpowder, etc. Its leaves, 4 to 7 inches long, are very distinctive. This is a European species but now thoroughly naturalized in the Northeastern States. As a rough general rule the shape of the perfect tree is closely fashioned on that of the perfect leaf, for obviously they are the same material impelled by similar laws of growth, but we have two notable exceptions in the Lombardy Poplar and the common Willow. To conform to the tule these two leaves should change places.
