Proceedings of the Ohio State Academy of Science 213 



12. Adaptation in a Desert Lichen Flora. 10 min. Bruce Fink 



13. Notes on the Ohio Flora. 5 min. J. H. Schaffner 



14. The Lalioratory Method for Beginning Students. 10 



min. Maximilian Braam 



15. Protective Encystment in Phagocata gracilis. 5 min. L. D. Peaslee 



16. Cell Division in the Pollen Mother Cells of Antheinis 



cotiila L. 8 min. M. E. Stickney 



17. Mitosis in Opalina. 15 min. M. M. Metcalf 



18. A Preliminary Report on the Nuclear Divisions in the 



Pollen Mother Cell of Convallaria majalis L. 5 min. L. W. Sauer 



19. Is Synizesis an Artifact? 6 min. J. H. Schaffner 



20. A Preliminary Note on the Chondrocranium of Eumeces. 



(Slides.) 10 min. E. L. Rice 



21. Notes on the Growth of the Western Catalpa (Catalpa 

 speciosa). 8 min. W. R. Lazenby 



22. Faulty Specimens for Nature Study, and how Good Ones 



may be Prepared. 15 min. Chas. Dury 



23. Cancer in Mice (Miis inusculus). 5 min. E. F. McCampbell 



24. Relation of Rain Fall to Crop Yield. 5 min. J. Warren Smith 



25. Removal of the Showy Parts of Flowers as affecting 



Fruit and Seed Produced. 5 min. A. H. McCray 



26. The Coals of the Monongahela Formation in Ohio. 



25 min. J. A. Bownocker 



27. Fresh light on the Chronology of the Glacial Epoch in 



North America. (Slides.) 25 min. G. F. Wright 



28. Glacial Erosion in the Canadian Selkirks. (Slides.) 



15 min. L. G. Westgate 



29. Some effects of Glacial Erosion in the Alps. 10 min. 



N. M. Fenneman 

 80. The Raised Beaches of Lake Huron. 15 min. W. M. Gregory 



31. Rock Terraces along Streams in the Vicinity of Colum- 

 bus, Ohio. 12 min. G. D. Hubbard 



32. Ecologic Notes from Beechwood Camp. 8 min. Bruce Fink 



33. The Systematic Position of Apathus elatus. 8 min. A. H. McCray 



34. Observations on the Tick, Bryobia pratensis Garman. 



10 min. S. R. Williams 



35. Occurrence of Paragoniinits zvcsteniianiiii near Cincin- 

 nati, Ohio. 5 min. H. M. Benedict 



36. Localization of the Excretory Function in Amoeba 



proteus. 7 min. M. M. Metcalf and R. A. Budington 



37. Evidence pointing toward a Sexual Reproduction in 



Ettgleiia proxima Dangr. 5 min. L. B. Walton 



