PREFACE 



THE analytical key of trees in winter 

 which accompanies the new edition of 

 this volume is based largely on the 

 contrasting characters of the buds, leaf-scars, 

 and stems, and is intended for those who come 

 in from a walk, or from studying trees out of 

 doors, and wish to identify the specimens they 

 have gathered. By following the key step by 

 step, and carefully comparing the specimens, 

 the family is determined, and the student re- 

 ferred to the page where the different species 

 are described. 



I have purposely included certain familiar 

 trees not indigenous to the Northeastern States, 

 but ordinarily met with, because it seemed more 

 useful to help the beginner to know each tree 

 with which he comes in contact than to make 

 a classification which follows strictly geograph- 

 ical lines. 



I gratefully acknowledge my thanks to 

 Professor Sargent for his kind assistance in 

 compiling the key. 



A. O. H. 



JAMAICA PLAIN, January, 1910. 



xv 



