ld
Arboretum, Boston, Massachusetts, and of the Missouri Botanical Garden,
St. Louis, for information in regard to the hardiness of species; to Mr.
John H. Redfield, of the Botanical Department of the Philadelphia
Academy of Natural Sciences, for books, specimens from which to make
illustrations, etc.; and to Dr. A. C. Stokes, of Trenton, New Jersey,
for assistance in many ways, but especially for the accurate manner in
which he has inked the illustrations from the author's pencil-drawings.

The author also wishes to acknowledge the help received from many
nurserymen in gathering specimens for illustration and in giving
information of great value. Among these, special thanks are due to Mr.
Samuel C. Moon, of Morrisville Nurseries, who placed his large
collection of living specimens at the author's disposal, and in many
other ways gave him much intelligent aid.

CONTENTS.

PAGE.
PART I. ESSENTIAL ORGANS, AND TERMS NEEDED FOR THEIR DESCRIPTION 9-43

CHAPTER I. Roots 9

CHAPTER II. Stems and Branches 11

CHAPTER III. Leaves 17

CHAPTER IV. Flowers and Fruit 24

CHAPTER V. Winter Study of Trees 29

CHAPTER VI. The Preparation of a Collection 35

CHAPTER VII. Figures to be used in Botanical Description 38

PART II. PLAN AND MODELS FOR TREE DESCRIPTION 44-50

PART III. KEY, CLASSIFICATION AND DESCRIPTION OF THE SPECIES 51-201

* * * * *

GLOSSARY OF BOTANICAL TERMS, AND INDEX TO PART I 203-212

INDEX TO PART III 213-224

TREES.

PART I.

THE ESSENTIAL ORGANS, AND THE TERMS NEEDED FOR THEIR DESCRIPTION.

CHAPTER I.

_Roots._

Though but little study of the roots of trees is practicable, some
knowledge of their forms, varieties, and parts is important.

The great office of the roots of all plants is the taking in of food
from the soil. Thick or fleshy roots, such as the radish, are stocks of
food prepared for the future growth of the plant, or for the production
of flowers and fruit. The thick roots of trees are designed mainly for
the