2 INTRODUCTION. 



financial results, must be based on the yield of the forest. 

 In order to determine this, the forester must study the laws 

 which govern production; he must be able to measure the 

 produce and the increment accruing annually or periodically, 

 to determine the capital invested in the forest, to regulate 

 the yield according to time and locality, and to organise the 

 systematic conduct of the business. 



Accordingly, forest management may be divided into the 

 following parts : 



PART I. FOREST MENSURATION, dealing with the deter- 

 mination of the dimensions of trees, the volume 

 of trees and whole woods, their age and 

 increment. 



PART II. FOREST VALUATION, dealing with the determina- 

 tion of the capital employed in forestry, and 

 the financial results produced by it. 



PART III. PRINCIPLES OF FOREST WORKING PLANS. 

 PART IV. PREPARATION OF FOREST WORKING PLANS. 



