82 The Ohio Journal of Science [\o\. XVII, No. 3, 



25. Notes on the Germination of Tree Seeds. 10 min William R. Lazenby 



26. The Quince Leaf-Spot. 10 min W. G. Stover 



27. A Blade Blight of Corn. 10 min W. G. Stover and W. N. Ankeney 



28. The Occurrence of the Volutella Rot in Ohio. 5 min. .Gustav A. Meckstroth 



29. Observations on the Ontogeny of the Gall of Pachypsylla mama Riley. 



30 min. (Lantern) '. B. W. Wells 



30. On Wavemarks. 10 min. (Lantern) W.\lter H. Bucher 



31. The Northward Extension of the Physiographic Provinces of the United 



States. 20 min " W. N. Thayer 



32. Additions to the Anatomy of Lepadocystis moorei. 5 min. . . W. H. Shideler 



33. Resistance of Electrolytes by a modification of Kohlrausch's Method. 



12 min M. E. Graber 



3-1:. Demonstration of Apparatus showing Analogy between Reactance 

 Phenomena in Alternating Current Circuits and in Fluids. 15 min. 



F. C. Caldwell 



35. Absorption of High Frequency X-rays, l.j min. . S. J. M. Allen 



36. x\ Relative Score Method for Unmeasured Characters. 10 min. . A. G. McC.\ll 



37. The Revegetation of the Katmai District of Alaska. 35 min. (Lantern), 



Robert F. Griggs 



38. The Symbols used in Geometry John H. Williams 



39. Crystals W. N. Speckman 



Demonstrations . 



1. Certain Points in the Celloidin Method A. B. Plowman 



2. A Recent Ohio Specimen of Henslow's Sparrow Edward L. Rice 



Edward L. Rice, Secretary. 



