Introductory. 7 



while, owing to a di£Eerent historical background and to 

 different political and social conditions, none of their 

 adnunistrative methods and measures may appeal to ns, 

 the principles underlying them as well as those underly- 

 ing their silvicultnral methods remain the same and 

 are applicable everywhere and can best be recognized 

 and studied in the history of their development. 



