tit 



111 



Pies 



Ennmeration of trees « . . 47 



Recording the results of enumeration 50 



Calculating the volwme of material. 



Type-trees and form-factors 51 



Measrirement of trees and logs. 



General rules . . . • . 52 



CalcvJation of the exploitable age. 



General rules 58 



CHAPTER m.-THE WORKING-PLAN, 



Preliminary explanations. 



