In the preparation of Chapter VIII on "Our Common Woods: Their Identification, Properties and Uses," considerable aid has been received from Prof. Samuel J. Record, author of "Economic Woods of the United States." Acknowledgment is also due to the U.S. Forest Service for the photographs used in Figs. 18, 122 to 138 inclusive and 142; to Dr. George B. Sudworth, Dendrologist of the U.S. Forest Service, for checking up the nomenclature in the lists of trees under Chapter V; to Dr. E.P. Felt, Entomologist of the State of New York, for suggestions in the preparation of the section of the book relating to insects; to Dr. W.A. Murrill, Assistant Director of the New York Botanical Gardens, for Fig. 108; and to Mr. Hermann W. Merkel, Chief Forester of the New York Zoological Park, for Figs. 26, 59 and 60. J.J. LEVISON. BROOKLYN, N.Y. June, 1914. CONTENTS CHAPTER I HOW TO IDENTIFY TREES The Pines The Spruce and Hemlock The Red Cedar and Arbor-vitae CHAPTER II HOW TO IDENTIFY TREES (Continued) The Larch and Cypress The Horsechestnut, Ash, and Maple Trees Told by their Form Trees Told by their Bark or Trunk The Oaks and Chestnut CHAPTER III HOW TO IDENTIFY TREES (Continued) The Hickories, Walnut, and Butternut Tulip Tree, Sweet Gum, Linden, Magnolia, Locust, Catalpa, Dogwood, Mulberry, and Osage Orange CHAPTER IV THE STRUCTURE AND REQUIREMENTS OF TREES CHAPTER V WHAT TREES TO PLANT AND HOW Trees for the Lawn Trees for the Street Trees for Woodland Trees for Screening CHAPTER VI THE CARE OF TREES Insects Injurious to Trees and How to Combat Them Important Insects Tree Diseases Pruning Trees Tree Repair CHAPTER VII FORESTRY What Forestry Is and What It Does Care of the Woodland CHAPTER VIII OUR COMMON WOODS: THEIR IDENTIFICATION, PROPERTIES AND USES Woods Without Pores (Soft woods) Woods with Pores (Hard woods) CHAPTER IX AN OUTDOOR LESSON ON TREES INTRODUCTION A good many popular books on trees have been published in the United States in recent years. The continually increasing demand for books of this character indicates the growing public interest not only in the trees that we pass in our daily walks, but also in the forest considered as a community of trees, because of its aesthetic and protective value and its usefulness as a source of important economic products.