210 FOREST REGULATION 



Part IV. Control and Continuance of Working Plans ("Kon- 

 trolle und Fortfuhrung d. Betriebsplane"). 



a. Control through proper Book-keeping, ("Gedenkbuch" and 



" Wirtschaftsbuch") 



b. Revisions, ("Taxations revisionen"). 



Part V. Regulation in Various States, (refers only to State 



forests) and includes Regulation in Prussia, Bavaria. 



Saxony, Baden, Hessen, Grd. Duchy Saxony, Alsace- 



Loraine, Austria and France. 



In the former edition he adds a Review ("Riickblick") which 



sums up the present situation in a very able manner. Among the 



points made are these : 



1. Methods in actual practice differ to some extent but resemble 

 far more than appears from the Instructions. 



2. Most essential points in all alike are : 



a. To determine what Stands should be reproduced in the next 

 year, or next ten years. 



b. In judging them we must consider the forest as a whole. 



c. All agree practically, that the Normal Area Regulation 

 ( A /r = yearly area to cut) must serve as final. 



d. This Measure is modified according to the condition of age 

 classes. 



e. In this agreement on a Normal Area to be cut each year 

 (A/r) the rotation r is set as a definite, fixed quantity. In practice 

 it must of necessity be a variable, the age at which a stand is actually 

 cut must depend on many things, its growth and condition, market, 

 accidents to other stands, etc. 



III. A. VON GUTTENBERG, "FORSTBETRIEBSEIN- 

 RICHTUNG." 



Publ. by Denticke, Wien and Leipzig, 1911 ; 2d ed. ; 393 p. 



Contains excellent maps of samples in forest division. 



Prof. Dr. Adolf Ritter von Guttenberg of the Imperial Academy 

 for Agriculture (Bodenkultur) is well known as the foremost 

 authority in forestry in Austria ; author of Forest Mensuration in 

 Lo rey's Handbuch. etc. The book is specially interesting to the 



