COLOR PLATES 
Magnolia in Spring. Frontispiece 
FOLLOWING 
PAGE 
Elms and Maples in Summer. 18 
White Oak in Autumn. 20 
Beech in Winter. 24 
Leaves of White Elm, Red Spruce, Beech, White Ash, Red Maple, Tamar¬ 
ack, White Pine. 40 
Leaves of Tulip Poplar, Sweet Gum, Scarlet Oak, Basswood, White Cedar, 
Flowering Dogwood, Shagbark Hickory. 40 
Leaves of Aspen, Yellow Birch, White Willow, White Oak, Balsam Fir ... 40 
Leaves of Hard Maple, White Maple. 40 
Leaves of Red Oak, Chestnut. 40 
Aphids or Plant Lice. 172 
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 . 188 
Fall Web Worm and Spiny Elm Caterpillar . 190 
