LIST OF ILLUSTRATIONS 



PAGE 



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 



Fruit-cluster of the crab-apple (tint) 73 



Cluster of Winesap apples (tint) 75 



An apple orchard in winter 78 



When the apple trees blossom 8i 



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. 



Flowers of Carolina poplar (tint) 95 



Pussy-willows (tint) 97 



A weeping willow in early spring ICX3 



The weeping willow in a storm 103 



A pussy-willow in a park 106 



Blooms of the white willow 108, 109 



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 



Leaves and seed-pods of the slippery elm (tint) . . . 131 



Tulip flowers (tint) 133 



A mature American elm 136 



The delicate tracery of the American elm in winter . 139 



The English elm in winter 14.3 



Winter effect of tulip trees 148 



A great liriodendron in bloom 150 



(x) 



