FOREST MANAGEMENT. 323 



3. The plan proper, containing the forester's advice as submitted to 

 the owner, discussed with the owner and approved by the owner. 



The plan proper is, usually, a compromise between owner and forester. 

 The chief working plan requires revision and is invariably redrawn 

 before the lapse of many years whenever the facts are altered on which 

 the plan was based. 



The subheads of a chief working plan are : 

 Forest survey. 

 Description of locality. 

 Yield tables and volume tables. 

 Problems of silviculture and of protection. 

 Forest utilization. 

 Forestal investments. 

 All data ascertained and all changes planned should be shown, if pos- 

 sible, on maps allowing of rapid reference. 



The scale and the detail of the maps depend on the value of the invest- 

 ment per acre. 



Forest 3orve^ 



The objects of a forest survey are : 



1 . Outside boundaries and those of interior holdings. 



2. Railroads, rivers, creeks, bluffs and other obstacles, and means of 

 transportation. 



3. Lines between localities having different laws, inasmuch as they 

 influence forest management. 



4. Differences in ownership. 



5 . Boundaries of the various forest ranges. 



6. Configuration. 



7. Differences of soil; mineral possibilities. 



8. Dividing lines between forest soil, farm soil, pasture soil, and min- 

 eral soil. 



9. Lines of working circles, if there are any. 



10. Roads, trails and fire-lanes. 



11. Age, species, and quality of growing stock, according to compart- 

 ments. 



