324 REPORT OP THE FOREST, PISH AND GAME COMMISSIONER. 



It is not necessary, of course, that all of these points should be 

 exhibited in all working plants. 



Description of Locality 



The " locality " is usually described by compartments. The " quality 

 of the locality," which means to say its productiveness, is a function of 

 soil and climate. 



The height growth of the trees yields the best indication of the quality 

 of the locality. The number of qualities of locality distinguished in a 

 chief working plan depends on local conditions, notably on the intensity 

 of management. 



*Iield 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 determing the age of maturity. 

 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. 



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 work- 

 ing sections. The method of regeneration, the species to be favored, 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 preservation, landscape 

 considerations, etc., must be touched. 



Silvicultural investments are unwise where the forest cannot be pro- 

 tected from fires. The financial outlook of investments in first growth is 



