52 



21. The Effect of Aeration on the Roots of Zea Mays, 5 min 



Colonzo C. Beals, Indiana University 



22. Resistance of Mucor Zygotes, 20 min 



Mildred Nothnagel, Indiana Univev.^ity 



Chemistry. 



23. The Absorption of Iron by Platinum Crucibles in Clay Fusions, 



5 min W. M. Blanchard, 



DePauw University; Roscoe Theibert, DePauw University 



24. The Injurious Effect of Borax in Corn Fertilizers, 10 min. (by 



title) S. D. Conner, Purdue University 



25. Chemical Estimations of Fertility in Fulton County (Ind.) Soils, 



15 min R. H. Carr and G. A. Cast, Purdue University 



26. By-products of the Preparation of Ether, 10 min. (by title) . . . 



P. N. Evans and G. K. Foresman, Purdue University 



27. Quantitative Precipitation of Manganese as the Sulphide, 15 



min James Brown, Butler College 



28. The Influence of Methyl Iodide Vapor and Tobacco Smoke on the 



Growth of Certain Bacteria and Fungi (by title) . .C. A. Ludwig 



Geology. 



29. Brief Notes on the New Castle Tornado, 10 min 



Colonzo C. Beals, Indiana University 



30. "The Mt. Carmel Fault," 5 min W. N. Logan, Indiana University 



31. "Some Criteria of Dip," 5 min W. N. Logan, Indiana University 



32. "Possible Utilization of Indiana Kaolin," 5 min 



W. N. Logan, Indiana University 



33. "The Physiographic Divisions of the United States as made by 



the Fenneman Committee," 5 min 



F. J. Breeze, Indiana University 



34. "Glacial Boulders in Brown and Monroe Counties, South of 



the Limit of Glaciation, 15 min 



F. -J. Breeze, Indiana University 



35. "Field Methods in the Mid-Continental Oil Field," 15 min 



Louis Roark, Indiana University 



