6 CONTENTS. 



Page. 



Part IV. — Management 44 



Choice of species „ 44 



Factors influencing rotation 45 



Method of reproducing the stand 45 



Choice of material 46 



Culmination of the average annual growth 48 



Greatest income 49 



Thinnings 49 



Object of thinnings 49 



Time and severity 50 



Trees removed 51 



Results of thinnings 52 



Final cutting and reproduction : 54 



Clear-cutting system 54 



Pole-Avood sprout system 55 



Changing the type 56 



Regenerating worn-out sprout stands 57 



Protection 58 



Financial returns 58 



APPENDIX. 



Volume tables 61 



Cubic feet 61 



Cordwood 63 



Lumber 64 



Ties 66 



Poles 67 



Yield of individual oak and oak-chestnut stands 68 



