P. S. REINSCH, _Readings in American Federal Government_, pp. 538-589; M. H. GREGORY, _Checking the Waste_, pp. 42-85; ISAAC LIPPINCOTT, _Economic Development of the United States_, pp. 149-182. ISAIAH BOWMAN, _The New World: Problems in Political Geography_ (see index). Group Problems =1. The civilization of the future as determined by the exhaustion and development of natural resources.= When European and American resources in coal, oil, and iron give out, what substitutes can be used and to what extent? What countries have the resources to enable them to forge ahead when that time comes? Show the connection between industrial progress and each type of natural wealth. Consider whether there is any way in which a country may keep its industrial supremacy despite the exhaustion of natural wealth. =References=: _Encyclopedia Britannica_; _Statesman’s Year Book_; GREGORY, KELLER, and BISHOP, _Physical and Commercial Geography_, especially pp. 252-350; 384-394; C. R. VAN HISE, _The Conservation of Natural Resources in the United States_, especially pp. 359-379; H. T. BUCKLE, _History of Civilization in England_, Vol. I (1868 edition), pp. 39-151; ISAIAH BOWMAN, _The New World_, _passim_. =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.