32 Forestry Quarterly. 



The long time element in forestry is unique and involves most 

 elaborate planning and calculation in order to enable the forest 

 grower to carry on a continuous "sustained yield" management 

 profitably. 



With the discussion of what an adequate rate of interest is, 

 with which to charge this business with its long time production 

 we come upon the field of national economy as one of the fun- 

 damental sciences for forestry. 



Morevover, the aims and objects of forest management are to 

 a large extent of national economic character. The claimed in- 

 fluence of forests on climate and water flow seem to impose upon 

 State governments the duty to supervise, regulate, or undertake 

 the management of forest areas, and, since other considerations 

 of State besides the cultural interests of forest areas, involved 

 in the peculiarities of the forestry business, indicate, that State 

 management of forest areas will eventually become universal, it 

 is desirable, if not essential, for the practice of technical for- 

 estry, that the fully educated forester should have clear concep- 

 tions of the principles underlying such duties of the State. Not 

 only are, therefore, those branches of economics which concern 

 themselves with the development of business principles to be 

 thoroughly mastered, but a knowledge of the functions of the 

 State, of State politics are to the forester even more needful 

 than to the generally educated man, for his business is in closer 

 relation to the State. 



In addition to the fundamental sciences, forestry must borrow 

 from other arts and professions. The manager of an isolated 

 property must have varied knowledge — accessories to his art. 

 He must have enough familiarity with the principles of business 

 law to avoid pitfalls ; he may have to be his own architect, sur- 

 veyor, and engineer. There is especially a considerable amount 

 of engineering knowledge needed by him in providing methods 

 and means of economic harvesting and transportation of his 

 bulky crop. 



The forester is really in the same business as the logger or 

 lumberman, namely, to supply wood materials to the community 

 with only the added obligation of continuing in the business after 

 the first harvest. He must, therefore, be a competent logger, 

 and all the engineering knowledge of the "logger" and somewhat 

 more is his need. Forest surveys, especially, will for a time be 



