THE ANNUAL COUPE. 311 



deserve to be specially mentioned. These may, according to 

 their principal characteristics, be grouped in the following 

 manner : 



I. Division of the forest into fixed annual coupes. 

 II. Allotment of woods to the periods of a rotation. 



1. According to area. 



2. ,, ,, volume. 



3. ,, ,, area and volume combined. 



III. Regulation of the yield according to increment and 



growing stock. 



1. The Austrian method. 



2. Hundeshagen's 



3. Von Mantel's 



4. Brandis' 



IV. Regulation of the yield according to increment and 



growing stock, combined with the allotment of areas to 

 the several periods of a rotation (Heyer's method.) 

 V. Annual or periodic selection of woods for cutting in 

 accordance with sylvicultural requirements and the 

 objects of management (Judeich's method.) 



SECT CON I. DIVISION OF FOREST INTO FIXED ANNUAL COUPES. 



Under this method the area of the forest is divided into as 

 many annual coupes as there are years in the rotation, and 

 each coupe marked on the ground. Every year one coupe is 

 cut over, giving the annual yield of final returns, to which 

 must be added the necessary thinnings in the other coupes. 



A 

 The size of each annual coupe is = , if the area is at once 



A 

 re-stocked, or = - , if each coupe lies fallow for s years. 



T -f- S 



In this case A may represent the actual or reduced area. 



The merits of this method are small. It aims more directly 

 than any other method at the establishment of a regular series 

 of age gradations, which becomes normal after one rotation 



