COLOR PLATES 



Magnolia in Spring Frontispiece 



FOLLOWING 

 PAGE 



Elms and Maples in Summer 1 8 



White Oak in Autumn 2 



Beech in Winter 2 4 



Leaves of White Elm, Red Spruce, Beech, White Ash, Red Maple, Tamar- 

 ack, White Pine 4 



Leaves of Tulip Poplar, Sweet Gum, Scarlet Oak, Basswood, White Cedar, 



Flowering Dogwood, Shagbark Hickory 4 



Leaves of Aspen, Yellow Birch, White Willow, White Oak, Balsam Fir. . . 40 



Leaves of Hard Maple, White Maple 4 



Leaves of Red Oak, Chestnut 4 



Aphids or Plant Lice I7 2 



Maple and Other Scale Insects 174 



Maple Borers and Cottony Maple Scale 176 



White Marked Tussock Moth and Forest Tent Caterpillar 184 



Elm Leaf Beetle and Bag or Basket Worm 186 



Oak Insects *88 



Fall Web Worm and Spiny Elm Caterpillar 19 



