210 



THE THEORY AND PRACTICE OF WORKING PLANS 



Column 4. 



5- 

 6. 



7- 

 8. 



9- 

 10. 

 II. 

 12. 



13- 



14. 



15- 

 16. 



17- 

 18. 

 19. 

 20. 

 21. 

 22. 



23- 



24. 



Area in hectares of the 



Age 



subdivisions, 

 divisions. 

 Site, exposure, soil. 

 Percentage of each species. 

 Density and growth of the stand, 

 present, 

 at the time of cutting. 



I final cuttings J ordinary. 

 ^ [ in hectares [ extraordinary. 



Thinnings, in hectares. 

 . f final cuttings | ordinary. 

 ^ [in hectares [ extraordinary. 



Thinnings, in hectares. 



III period cuttings, in hectares 



IV period cuttings, in hectares 



V period cuttings, in hectares 



VI period cuttings, in hectares 

 Remarks. 



I final. 



[ thinnings. 



final. 



thinnings. 



final. 



thinnings. 



final. 



thinnings. 



The number and length of the periods vary with the species 

 and the locality. For oak in central France eight periods of 

 twenty-five years each are formed ; for beech usually six periods 

 of twenty years each; for fir four or five or more periods of thirty 

 years each. The number of the periods and their length require 

 the approval of the minister.* 



The rotation age is only fixed tentatively " without attempt- 

 ing to ILx it definitely by apphing experiences whose value is 

 often only specious." j 



For the state forests a rotation asre is chosen which corre- 



* Formerly of the Emperor himself by a decree, 

 t From a French working plan. 



