30 



14. A Few Experiments with Liquid Air, ?, m C. T. Knipp 



15. The Bitangeutial of the Quintic, 20 m U. S. Hanna 



10. A Theorem in Geometry, 3 m J. C. Gregg 



17. A Simple Proof that the Medians of a Triangle Concur, 



3 m J. O. Gregg 



18. Note on an Attempted Angle Trisection, 3 m R. J. Aley 



19. A Problem in Geometry, 3 m J. A. Cragwall 



ZOOLOGY. 



20. An Aberrant Etheostoma, 3 m W. J. Moenkhaus 



21. The Spinning of the Egg-sac in Lycosa, 5 m W. J. Moenkhaus 



22. The Culture of Amoeba, 2 m A. J. Bigney 



23. Protective Coloring of Tei*ns, 5 m A. J. Bigney 



24. Effect of Pressure on Developing Eggs, 10 m A. J. Bigney 



25. Zoological Survey of Minnesota, 10 m U. O. Cox 



26. The Eyes of the Rhineura Floridana, the Blmd Amphis- 



baeniau from Florida, 10 m C. H. Eigenmann 



27. The Eyes of the Blind Shrimp from the Artesian Well at 



San :Marcos. Texas, 10 m E. M. Xeher 



28. Report of the Biological Station, under the direction of 



C. H. Eigenmann 



(a) Maps of Winona, Pike and Center Lakes, 10 m. . . .A. A. Norris 



(b) The Mollusca of Winona Lake, 10 m A. A. Norris 



(c) The Dragonflies of Winona Lake, 10 m E. B. Williamson 



(d) The Flora of Eagle Lake and Vicinity, 10 m H. W. Clark 



(e) Plant Ecology of the Winona Lake Region, 10 m. .Lucy Youse 



29. Variation Notes, 5 m C. H. Eigenmann and Clarence Kennedy 



30. The History of the Eye of Amblyopsis; Abstract, 10 m., 



C. H. Eigenmann 



31. Zoological Miscellany, 10 m C. H. Eigenmann 



GEOLOGY AND GEOGRAPHY. 



32. Niagara Group Unconformities in Indiana. 10 m M. N. Elrod 



33. The Valley of the Lower Tippecanoe River, 10 m F. J. Breeze 



34. Concerning a Series of Well-defined Ripple Marks in the 



Hudson River Group, Richmond, Indiana, 10 m., 



Joseph Moore and A. D. Hole 



35. Variation in the Spires of Seminula Argeutia (Shepard) 



Hall. 10 m ■ J. W. Beede 



