SO 60 10 80 <JO too 



10 



Fig. 3. Pine; North Germany Sites I-V; Normal Yield of main stand in cubic feet 

 <acre. Also the points indicating the age at whic'h the average tree attains a diameter 

 8", 10", 12" and a 'height of 30 ft., 40 ft., etc. Only wood 3" and over is here considered. 



152 



