SO 60 70 gO CfO 100 HO I2O 130 



Aae 

 H 



Tl 



froooe^h 



70 OO 



bOQO 



/3O 



Fig. 7. Beech; N. Germany; Sites I-V; Normal Yield of Main Stand 

 in cubic ft. per acre. Also points indicating at what age the average tree 

 attains a diameter of 8", 10", etc., and a height of 50 ft., 60 ft., etc. Only 

 wood 3" and over is here considered. 



156 



