FIFTH NATlONAI< CONSERVATION CONGRESS 157 



C. The development of the forestry movement: 



a. Historical work of societies, Arbor Day, etc. 



b. Forest legislation. 



c. Land policy of the United States. 



D. The National forest policy; 



a. Origin and growth of the National forests. 



b. Purpose of the National forests. 



c. General plan of the administration of the National forests. 



E. The State forest policy. 



F. National parks. 



G. The necessity for public forests. 



Forestry Subjects That May be Taught in Connection With 

 Courses in Physical Geography. 



A. The relation of forests to climate: 



a. The effect of the forest on precipitation. 



b. The effect of the forest on atmospheric and soil humidity. 



c. The effect of the forest on atmospheric and soil temperature. 



B. The influence of forests on soil and water supply: 



a. The effect of forests upon soil fertility. 



b. The effect of forests upon soil stability. 



c. The effect of forests upon streamflow and seepage. 



C. The influence of forests on public health: 



a. Influence on potable water. 



b. Influence on air purity. 



D. The necessity for improving present conditions: 



a. Fixation of shifting sand. 



b. Maintenance of present forests. 



c. Seeding and planting. 



Forestry Subjects That May be Taught in Connection With 

 Manual Training in Woodworking. 



A. The important woods used in the industries and arts : 



a. The most important native species. 



b. The most important exotic species. 



B. The logging and manufacture of wood: 



a. Methods of logging — conservative logging. 



b. Saw mills and their product. 



c. Waste in logging and manufacture. 



C. Principal uses of wood. 



D. The properties of wood: 



a. Structural. 



b. Physical. 



c. Mechanical. 



E. Conditioning wood: 



a. Seasoning. 



b. Wood preservation. 



F. The identification of the more useful species. 



The manner in which forestry can be brought into high school courses in 

 botany is extremely varied. Botany, aside from being a study of general culture, 

 is important because of its intimate relation to agriculture, horticulture, and 

 forestry. The forest is a plant society and as such is of first importance in 

 studying plant ecology. The forest provides the botanical student with his chief 



