02 



28. Cultivating and Breeding Medicinal Plants, lantern, 



20 minutes Fred A. Miller 



29. Some Large Botanical Problems, 10 minutes J. C. Arthur 



ZOOLOGY. 



30. The Alba Gehre Collection of Birds' Eggs in the Museum 



of Purdue University, 10 minutes Howard E. Enders 



31. A Stud} 1 of the Maturation Period in the Mole-Cricket, blackboard, 



10 minutes . . F. Payne 



32. Xote on a Peculiar Nesting Site of Chimney Swift, 



3 minutes Glenn Culbertson 



33. Mosaics in Drosophila Ampelophila, chart, 5 minutes. .Horace M. Powell 



34. New Mutations in the Genus Drosophila and their Behavior 



in Heredity, chart. 10 minutes Roscoe R. Hyde 



35. Xotes on Indiana Earthworms, 10 minutes H. V. Heimburger 



36. Insects of the Between-Tides Zone, 30 minutes Chas. H. Arndt 



37. Regeneration in Sagartia, 5 minutes D. W. Davis 



38. The Relation of Birds to Aquatic Life as Exemplified by 



Observation and Studies made at Lake Maxinkuckee. 



15 minutes Barton \Y. Evermann 



39. The Reptiles and Batrachians of the Lake Maxinkuckee 



Region, 20 minutes Barton W. Evermann. 



40. A Physical and Biological Survey of Lake Maxinkuckee, 



20 minutes Earton W. Evermann 



CHEMISTRY. 



41. The Quantitative Determination of Copper, 5 minutes. AY. M. Blanchard 



42. The Alundum Crucible as a Substitute for the Gooch 



Crucible, 5 minutes George L. Clark 



43. Some Recent Work in Dairy Chemistry, 20 minutes George Spitzer 



44. Analysis of Zirconium Minerals, 10 minutes James Brown 



45. Correlation of High School and College Chemistry. 



20 minutes : James Brown 



46. Chemical Composition of Virgin and Cropped Indiana Soils, 



10 minutes . S. D. Conner 



ENGINEERING. 



47. Sewage Disposal, lantern. 15 minutes Charles Brossmann 



18. Extension of Empirical Curve by the Addition of Estimated Values 



to a Series of Observations, charts, 20 minutes Albert Smith 



