align="right">39

A blooming twig of the swamp white oak 41 Acorns of the English oak 47 A lone pine on the Indian river 53 Hemlock Hill, Arnold Arboretum 56 The long-leaved pines of the South 61 Fountain-like effect of the young long-leaved pines 62 An avenue of white pines 67 Cones of the white spruce 71 An apple orchard in winter 78 When the apple trees blossom 81 The Spectabilis crab in bloom 84 Fruits of the wild crab 87 The beauty of a fruiting apple branch 91 Bloom of double-flowering apple 94 A weeping willow in early spring 100 The weeping willow in a storm 103 A pussy-willow in a park 106 Blooms of the white willow 108 A white willow in a characteristic position 112 Clump of young white willows 116 White poplars in spring-time 119 Carolina poplar as a street tree 123 Winter aspect of the cottonwood 126 Lombardy poplar 129 A mature American elm 136 The delicate tracery of the American elm in winter 139 The English elm in winter 143 Winter effect of tulip trees 148 A great liriodendron in bloom 150 Flowers of the liriodendron 153 The wide-spreading black walnut