2. Conservation and its apostles, especially President Roosevelt. References: H. R. Burch, American Economic Life, pp. 101-108; C. R. Van Hise, The Conservation of Natural Resources in the United Stales, pp. 1-14; 359-379; Ely, Hess, Leith, and Carver, Foundations of National Prosperity, pp. 19-20; Gifford Pinchot, The Fight for Conservation, pp. 40-70; Theodore Roosevelt, Autobiography, pp. 408-436.
3. The coal industry: its past, present, and future. References: W. J. Nicolls, The Story of American Coal; Peter Roberts, The Anthracite Coal Industry, pp. 3-16; 212-227; Ely, Hess, Leith, and Carver, The Foundations of National Prosperity, pp. 191-209.
Short Studies
1. The relation of human progress to geographic conditions. Gregory, Keller, and Bishop, Physical and Commercial Geography, pp. 126-179; T. H. Buckle, History of Civilization, I, pp. 174-270.
2. What are the fundamental factors in national prosperity? T. N. Carver, Principles of National Economy, pp. 3-15; Isaac Lippincott, Economic Development of the United States, pp. 14-34.
3. American forest reservations. H. D. Boerker, Our National Forests, pp. 170-232; O. W. Price, The Land We Live In, pp. 65-98; Ernest Bruncken, North American Forests and Forestry (1900), pp. 161-182; U. S. Department of Agriculture, Forest Service, Circulars.
4. The oil situation. David White, in the Annals of the American Academy of Political and Social Science (May, 1920); C. R. Van Hise, The Conservation of Natural Resources in the United States, pp. 47-61.
5. The growth of the iron and steel industry. H. N. Casson, The Romance of Steel, pp. 1-26; 72-100; J. R. Smith, The Story of Iron and Steel, pp. 108-126; Andrew Carnegie, Autobiography, pp. 130-197.
6. The conservation of water power. C. R. Van Hise, Conservation of Natural Resources in the United States, pp. 144-161.
7. The conservation of iron and copper. Ely, Hess, Leith, and Carver, Foundations of National Prosperity, pp. 210-231.