68 THE THEORY AND PRACTICE OF WORKING PLANS 



III. Based on growing stock and increment. 



5. I. Austrian formula (Kameraltaxe) 



6. 2. Karl's method. 



7. 3. Hundeshagen's method. 



8. 4. Breymann's method. 



9. 5. Heyer's method. 



" Formula 

 Methods." 



IV. Based on diameter classes. 



10. I. French method (Methode de 1883). 



11. 2. Indian method. 



12. 3. Diameter class method (Hufnagl). 



C. By area and volume. 

 I. For entire forest. 



13. I. Methode du Controle (Gurnaud). 



II. Based on age classes. 



14. I . Direct method (Hufnagl) . 



15. 2. Hufnagl's method. 



16. 3. The stand method (Judeich's " Bestandswirt- 



schaft "). 



III. Based on periods (" Fachwerks Methoden "). 

 ( I. Area-period method (" Flachenfachwerk "). 



17. j 2. Volume-period method (" Massenfachwerk "). 



[ 3. Area-and- volume period method {" Kombi- 

 niertes Fachwerk "). 



18. 4. American method (Chapman). 



These eighteen methods of determining the cut will be 

 considered seriatim; for each will be given (a) the description 

 of the method, (b) an example of its working, and (c) an estimate 

 of its value and application, with especial regard to American 

 conditions. The following symbols are used: F = volume, 

 r = rotation, A = area, a = age, M. = thousand feet board measure, 

 cds = cords, c.a.i.= current annual increment, w.a.i. =mean 

 annual increment. 



