EXCHANGE LIST 
17 
Sveriges Geologiska Undersokning, Stockholm, Sweden.* 
Syracuse University Library, Syracuse, N. Y. 
Tennessee State Geological Survey, Nashville, Tenn.* 
Tuskegee Normal and Industrial Institute Library, Tuskegee Institute, Ala. 
U. S. Bureau of Census, Washington, D. C.* 
U. S. Bureau of Mines, Washington, D. C.* 
U. S. Bureau of Soils, Washington, D. C.* 
U. S. Coast and Geodetic Survey, Washington, D. C.* 
U. S. Department of Agriculture. Forest Service, Washington, D. C.* 
U. S. Department of Agriculture Library, Washington, D. C. 
U. S. Geological Survey Library, Washington, D. C.* 
U. S. National Museum Library, Washington, D. C.* 
U. S. Office of Public Roads. Washington, D. C. 
U. S. Weather Bureau, Publication Division, Washington, D. C. 
University of California, College of Agri. Library, Berkeley, Cal.* 
University of California Library, Exchange Department, Berkeley, Cal.* 
University of California, Citrus Experiment Station, Riverside, Cal. 
University of Chicago Library, Chicago, Ill. 
University of Chicago, Department of Geology, Chicago, Ill. 
University of Cincinnati Library, Cincinnati, Ohio. 
University of Colorado Library, Boulder, Colo.* 
University of Florida, Department of Agronomy, Gainesville, Fla. 
University of Florida Library, Gainesville, Fla. 
University of Florida Museum Library, Gainesville, Fla. 
University of Georgia Library, Athens, Ga. 
University of Glasgow Library, Glasgow, Scotland.* 
University of Illinois Library, Urbana, Ill. 
University of Iowa Library, Iowa City, la. 
University of Kansas Library, Lawrence, Kan. 
University of Louisville Library, Louisville, Ky. 
University of Maine Library, Orono, Me. 
University of Michigan, Ann Arbor, Mich.* 
University of Minnesota Library, Minneapolis, Minn. 
University of Minnesota Library, Dept, of Agri., St. Paul, Minn. 
University of Missouri Library, Columbia, Mo. 
University of Nebraska Library, Lincoln, Nebr. 
L’niversity of North Dakota Library, University, N. D. 
University of Notre Dame, Leomonnier Library, Notre Dame, Ind. 
University of Oregon Library, Eugene, Ore. 
University of Pennsylvania Library, Philadelphia, Pa. 
University of Pittsburgh Library, Pittsburgh, Pa. 
University of Tennessee Library, Knoxville, Tenn. 
University of Texas Library, Austin, Texas. 
University of Washington Library, Seattle, Wash. 
University of Wisconsin Library. Madison, Wis. 
University of Wyoming, Agri. College Exp. Station Library, Laramie, Wyo.* 
Vanderbilt University Library, Nashville, Tenn. 
Vassar College Library, Poughkeepsie, N. Y. 
