EXCHANGE LIST 
15 
Massachusetts Institute of Technology Library, Boston, Mass. 
Michigan Geological and Biological Survey, Lansing, Mich.* 
Mills College, Geological Library, Mills College, P. 0 ., Cal. 
Milwaukee Public Library, Milwaukee, Wis. 
Minneapolis Public Library, Minneapolis, Minn. 
Minnesota Geological Survey, Minneapolis, Minn.* 
Minnesota School of Mines Library, University of Minn., Minneapolis, Minn. 
Mississippi State Geological Survey, Jackson, Miss.* 
Missouri Botanical Garden, St. Louis, Mo.* 
Missouri Bureau of Geology and Mines, Rolla, Mo.* 
Missouri School of Mines Library, Rolla, Mo. 
Missouri State Fruit Experiment Station Library, Mountain Grove, Mo. 
Missouri State Historical Society, Columbia, Mo. 
Montana State School of Mines Library, Butte, Mon. 
Mount Dora Library, ■ Mount Dora, Fla. 
Mount Holyoke College Library, South Pladley, Mass. 
Museum of Comparative Zoology, Cambridge, Mass.* 
Museo Goeldi de Historia Natural e Ethnographia, Belem, Para, Brazil, S.A.* 
Museo Nacional de Historia Natural, Buenos Aires, Argentina, S. A.* 
National Academy of Science, Washington, D. C. 
Natural History Society of Glasgow, Glasgow, Scotland. 
Natural History Society of New Brunswick, Saint John, N. B.* 
Nebraska Geological Survey, Lincoln, Nebr.* 
Newark Free Public Library, Newark, N. J. 
New Jersey Agricultural Experiment Station Library, New Brunswick, N. J* 
New Jersey Geological Survey, Trenton, N. J.* 
New York Academy of Sciences, 77th Street and Central Park West, New 
York, N. Y. 
New York Botanical Garden Library, Bronx Park, New York, N. Y.* 
New York Public Library, 476 Fifth Ave., New York, N. Y. 
New York State Library, Albany, N. Y.* 
New York State College of Forestry, Syracuse, N. Y. 
New York State Museum, Geological Department, Albany, N. Y* 
North Carolina Experiment Station Library, West Raleigh, N. C.* 
North Carolina Geological and Economic Survey, Chapel Hill, N. C.* 
North Dakota Agricultural and Economic Geological Survey, Fargo, N. D.* 
North Dakota Geological Survey, Grand Forks, N. D.* 
Northwestern University Library, Evanston, Ill. 
Oberlin College Library, Oberlin, Ohio. 
Ohio Agricultural Experiment Station Library, Wooster, Ohio.* 
Ohio Geological Survey, Columbus, Ohio.* 
Ohio State Library, Columbus, Ohio. 
Ohio State University Library, Columbus, Ohio. 
Oklahoma Geological Survey, Norman, Okla.* 
Orange City Library, Orange City, Fla. 
Oregon Agricultural College Library, Corvallis, Oregon.* 
Oregon Bureau of Mines and Geology, Corvallis, Oregon.* 
Orlando Sorosis Library, Orlando, Fla. 
