vi PREFACE 



in a small hand-book of this character, on every phase of 

 tree study. He presumes no further; yet he hopes that 

 by adhering to what is salient and by eliminating the less 

 important, though possibly interesting, facts, he is able 

 to offer a general and elementary resume of the whole 

 subject of value to students, private owners, farmers 

 and teachers. 



In the preparation of Chapter VIII on " Our Common 

 Woods: Their Identification, Properties and Uses," con- 

 siderable 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, Entomol- 

 ogist 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. 



