THE THEORY AND PRACTICE OF WORKING PLANS 243 



(7) The extermination of predatory animals, based upon the 

 kind and amount of damage done. 



(8) The extermination of prairie dogs, based upon the area 

 occupied and the damage done. 



A systematic plan for the " Permanent Improvements " on the 

 forest should be steadily developed, extended, and improved. 



The improvement plan will take the form of a map, and such 

 additional notes as may be necessary for its proper understand- 

 ing. Rough estimates of cost should be included wherever 

 obtainable. The following kinds of work will be considered: 

 Roads, trails, bridges, telephone lines, signal systems, perma- 

 nent and temporary headquarters, pastures, look-out towers, 

 fire lines, tool boxes, improvements necessary for range develop- 

 ment or making timber accessible, and areas in which the 

 blazing and posting of trails is urgent. 



Under " Forest protection " provision will be made for pro- 

 tection against fire and insects, and the protection of nurseries 

 and plantations against rodents. 



A plan for fire protection, as complete as is now practicable, 

 should be formulated and put into effect on each forest. 



The fire plan will consist of a map showing detailed topog- 

 raphy, forest types, all permanent improvements which will be 

 of any value in fire protection, look-out points, lines of fire 

 patrol, camping sites, places where assistance in fighting fire 

 may be obtained, areas of particular menace and areas in 

 particular need of protection, and detailed directions to rangers 

 concerning fire patrol, and cooperation with other districts 

 and forests. 



Under " Uses of Forest Lands " data should be collected 

 showing : 



1. Sale prices of agricultural lands within or near the forest, 

 including stump lands, unimproved non-timbered lands, and 

 improved ranches. 



2. Cost of clearing and stumping timbered lands. 



3. Comparative value of timbered land for agricultural and 

 forest purposes. 



