WORK OF THE UNITED STATES FOREST SERVICE 37 
The group of national forests in each national-forest region is 
under the direction of the regional forester. His staff generally 
consists of an associate regional forester and special technicians for 
each division of the Forest Service work activities. 
Each national forest is in charge of a forest supervisor, who plans 
the work on his forest under the direction of the regional forester 
and supervises its execution. When the amount of business on a 
national forest warrants it, the supervisor is assisted by an assistant 
supervisor, whose duties and authority are delegated to him by his 
superior. Supervisors and assistant supervisors have to be men of 
experience in forest work, construction of improvements, livestock 
management, wildlife development, administration of recreational 
resources, and in all other lines of work carried on in the national 
F-225768 
Ficurp 28.—The winter has its seasonal work for the forester, Fremont Natioua! Forest, 
reg. 
forests; therefore, these positions are always filled by promotion or 
transfer of experienced men from classified positions in the Forest 
Service. Supervisors’ headquarters are located in towns conveniently 
situated near the forests. 
Junior foresters and junior range examiners are employed in the 
various subordinate lines of technical and administrative work on the 
forests under the direction of the supervisor. These positions are 
filled through technical examinations. 
After an apprenticeship period of not less than 2 years, Junior 
foresters who have rendered satisfactory service may be advanced in 
grade and assigned to such work as examining and mapping forest 
areas, designating timber to be cut in sales, surveying boundaries, and 
conducting nursery work and forest planting. 
Every national forest is divided into ranger districts, varying in 
size from 50,000 to 300,000 acres, with a district ranger in charge of 
each. The rangers are administrators and have supervision over 
