PREFACE 



The following pages are the extracts from the Bulletin 

 of the Forest Experiment Station. At this Station, various 

 researches are being carried on in SAdviculture, Forest 

 Taxation, Forest Technology, Botany, Bacteriology, Entomo- 

 log3% Physics and Chemistry, and what is here published is 

 the result of investigations made between the course of 

 1905-1914. 



Care has been taken to select either articles of general 

 interests to the public or those of special value to the 

 practical forester ; it is further hoped to publish similar 

 works from time to time as the opportunity offers. 



Bureau of Forestry. 



Tokj^o, Japan, 

 July, 1915. 



