305 



Minnesota University. Geological survey bull., 17. 



Studies in language and literature, no. 8. 



Agricultural Experiment Station. Bull. 181-189.. 



School of Mines Experiment Station. Bull. 6-7. 



Mississippi. Geological Survey. Bull. 16. Jackson. 

 National Academy of Sciences. Proc, v. 6, no. 7-11. 



National Research Council. Bull., v. 1, pt. 3. 



Report, 4th. Wash. 1920. 



New York Academy of Sciences. Annals, v. 25, pp. 309- 



416; 28, 167-200; 29, 1-139. 1917-20. 

 New York Public Library. Bull. 24, no. 9-12; 25, no. 1-7. 

 New York State Museum. Bull. 219-20. Albany. 

 North Carolina. Geological Survey. Bull. 28. 



Biennial report, 1919-20. Raleigh. 



Economic papers, no. 50. Raleigh. 1920. 



Oberlin College. Wilson bull., v. 32, no. 3-4. 1920. 

 Ohio University. Bull., v. 25, no. 6. Columbus. 1920. 



Journ. of science, v. 20, no. 7-8; 21. 1920-21. 



Oklahoma. Geological Survey. Bull. 28-30. 



Circular, no 6. Norman. 1917. 



Smithsonian Institution. Bureau of American Ethnology.. 



Annual report, no. 33, 1911-12.' Wash. 1919. 



Bull., no. 67-71. Wash. 1919-20. 



United States. Dept. of Agriculture. Dept. circular no. 



170, 21 bull, of dept., and 12 farmers' bull. 



Experiment station record, v. 43 ; 44, no. 1-6. 



— Jouru. of agricultural research, v. 18, no. 12;. 



19, no. 8-11; 20, no. 1-11; 21, no. 1-7. 

 Yearbook, 1919. W T ash. 1920. 



Geological Survey. Ann. reports, 37-41 ; also 



numerous bulletins, mineral resources, professional, and 

 water-supply papers. Wash. 1916-21. 



Topographic atlas, 166 sheets. 



Library of Congress. Report, 1919. Wash. 



Rational Museum. Ann. report, 1920. Wash. 



Bull. 100, v. 1, pt. 7; 104; 106; 109-111. 



Contributions from the National Herbarium,. 



v. 22, pt. 3; 23, pt. 1. Wash. 1920. 



Proc, v. 55-56. Wash. 1920. 



Washington University, St. Louis. Studies, v. 7, no. 2 



8, no. 1. St. Louis. Mo. 1920. 



