UNITED STATES DEPARTMENT OF AGRICULTURE 



BULLETIN No. 275 



Contribution from the Bureau of Plant Industry 

 WM. A. TAYLOR, Chief 



Washington, D. C. 



PROFESSIONAL PAPER. 



AprU 7, 1916 



FOREST PATHOLOGY IN FOREST REGULATION. 



By E. P. MEINECKE, 



Forest Pathologist, Office of Investigations in Forest Pathology. 



CONTENTS. 



Page. 

 Methods of investigation Continued. 



Local pathology of white fir 35 



Tabulation of data 



Condensation of data 



Interpretation 



elusions and outlook 



Decay in relation to wounds 



Forest regulation 



Care of virgin forests 



Forest regulation through timber 

 sales 



Marking 



Pathological rotation and cutting 

 cycles 



INTRODUCTION. 



At the time of the creation of the national forests in the United 

 States the Government very suddenly found itself confronted with 

 the problem of organizing an enormous acreage of practically virgin 

 timber. It was natural that American forestry turned to the expe- 

 rience of the Old World for guidance in this huge task; it was quite 

 as natural that the present state of European forestry should have 

 served as the ideal to be reached in the shortest time possible. In 

 organizing the administrative machinery, European precedent could 

 be followed more or less closely, but not so in almost all other phases 

 of forestry. Except for certain economic factors and the develop- 

 ment of modern machinery, conditions influencing the lumber 

 industry in the United States are very dissimilar to those in the 

 typical forest countries of central Europe. Our virgin forests them- 



NOTE. This bulletin discusses the bearing of modern forest pathology on forest regulation. 

 98035 Bull. 27516 1 



