PREFACE 



The inquiry upon which this study of the 

 White Pine is based was made possible through 

 the public-spirited and generous cooperation of 

 Mr. William E. Dodge, Mr. D. Willis James, and 

 Mr. James W. Pinchot. The fund which they 

 subscribed was placed in the hands of Mr. 

 Henry S. Graves, by whom the notes and mea- 

 surements summarized in the following pages 

 were collected in the field. 



During the summer and autumn of 1894 the 

 work was prosecuted on the ground, and for 

 two months of that time Mr. Graves was assisted 

 by Mr. P. F. Nash, Jr., who gave his enthusi- 

 astic and helpful services entirely without cost 

 to the fund. After the conclusion of the field 

 work, the delicate and laborious task of calcu- 

 lation and tabulating the results was carried on 

 by Mr. Graves, and by him brought to an end. 

 He also prepared the silvicultural notes, based 

 on his observations, which were used as the 

 framework of the letter-press of this study ; and 

 the small tables in the text are wholly his own. 



V 



