JUDEICH'S METHOD. 33$ 



case of a financial management, this would comprise- 

 all woods the current forest per cent, of which has- 

 sunk below the general per cent. p. 



(3) All woods, the ripeness of which is more or less doubt- 

 ful, and which may be situated in the direction of the 

 cuttings. This includes the woods which will become 

 ripe during the working plan period. 



The sum total of the cuttings indicated under these three- 

 headings represents the final yield to be assigned to the period,, 

 for which the working plan is prepared. 



For small forests, or those where a sustained annual or 

 periodic yield is not called for, nothing further is required. It 

 is different in the case of extensive areas, especially those where 

 considerations for a steady annual income, for the regular 

 supply of markets, or the occupation of the staff and workmen, 

 necessitate an approximately even annual outturn. Here the 

 yield, as determined above, must be subjected to a modifying 

 regulator, either as regards the area to be cut or the volume to 

 be removed during the working plan period. 



This regulator can take any suitable shape, such as the size 

 of the mean annual or periodic coupe, the yield as calcu- 

 lated by the Austrian method, Hundeshagen's, or Heyer's 

 methods. Judeich prefers the mean annual coupe as obtained 

 by dividing the total area by the fixed rotation. If a forest 

 has an area of 2,000 acres and is worked under a general 

 rotation of 100 years, the mean annual coupe would be equal 



2000 



to ^rf^r = 20 acres. During a working plan period of 10 

 100 



years the normal cutting area for it would amount to 20 X 10 

 = 200 acres. In other words, during a period of 10 years 

 200 acres should be cut over, and the areas selected for cutting 

 should be brought within that limit. This, however, is only 

 desirable if the proportion of age classes is fairly normal. In 

 all cases where considerable deviations from it exist, such a 

 narrow limit cannot be drawn, because in some cases it is 

 highly desirable to cut more than the normal area, if for 



