Forest Management 17 



quality of the locality. The number of qualities of locality distin- 

 guished in a chief working plan depends on local conditions, notably 

 on the intensity of management. 



PARAGRAPH XIV. 



YIELD TABLES AND VOLUME TABLES. 



Yield tables are required for a forecast of future timber crops. In 

 America, tree growth tables (volume tables) must frequently take the 

 place of yield tables. 



Yield tables and volume tables show the interdependence between 

 soil, age, diameter and volume. It is wise to show the development of 

 the value of a tree as well, with a view of determining the age of ma- 

 turity. A tree is mature when the annual quantity, quality, and price 

 increment ceases to yield a sufficient rate of interest on the stumpage 

 value of the tree. 



PARAGRAPH XV. 



PROBLEMS OF SILVICULTURE AND OF PROTECTION. 



Wherever local conditions allow of it, the chief working plan dwells 

 at length upon the silvicultural system to be adopted for the various 

 working sections. The method of regeneration, the species to be fa- 

 vored, the extent of improvement cuttings, the method of weeding and 

 the financial effect of these measures must be shown. The extent and 

 advisability of forest pasture, turpentine or sugar industry, game pres- 

 ervation, landscape considerations, etc., must be touched. 



Silvicultural investments are unwise where the forest can not be 

 protected from fires. The financial outlook of investments in first 

 growth is tetter than the financial outlook of investments in second 

 growth wheresoever the restriction and the control of fires is difficult. 



The chief working plan describes the existing and the proposed 

 means of protection from forest fires, detailing the outlay to be in- 

 curred on that score. 



Continuous employment of workmen in all parts of the forest, year 

 in and year out, together with ready access to all parts of the forest, 

 are the surest means of fire protection. 



PARAGRAPH XVI. 



FOREST UTILIZATION. 



For many a year to come, the major part of the work to be planned 

 and to be done by the American forester must consist in the utilization 

 of the forest (lumbering). The forester is essentially a lumberman. 



The working plan considers the most advisable way of transforming 

 into money the various raw products of the forest. It discusses the 



