• >_' 



S -lent Photographic S •"» min., 



lantern 

 \n Experimental Determination of the V - ind 



Waves of Different Ii 10 min.. lantern. .Abthub L. Foley 



4<». A Simple Method of Harmonizing Leyden Jar Dischargi 



:nin.. lantern Arthur L. Foley 



41. An Electroscope f<-r M(a.-uring the Radioacticity o S 



10 min.. lantern R. R. 



■12. Some Photographs of Explosions in a Gas. 10 min.. 



lantern John B. Dun her 



4o. The Cause of the Variation in the Emanation Content of Spring 



Water. 10 min.. lantern R. R. 



44. A Standard Condenser of Small Capacity. 10 min.. 



lantern R. R. Ra 



45. A Comparison of Calculated and Experimental Radii of the 



Ring System by Diffraction and an Extension of Lonimel's 



Work in Diffraction. 10 min.. lantern Ma& in E. Hvfford 



S 

 4«5. Rate of Humification of Manures. 15 nun. Ii. II. Carr 



Zoology 



47. An Instance of Dn-ision by Constriction in the Sea-Anemone, 



Sagartia luciae, 5 min Donald W. Davis 



48. Data on the Food of Nestling Birds. 15 min. 



Will Scott and H. E. Endkbs 

 Two New Mutations and Their Bearing on the Question of 



Multiple Allelomorphs. 5 min R scob R. Hyde 



50. A Study of the Oxygenless Region of Center Lake. 10 min 



Will Scott and H. G. Imel 



51. The Lakes of the Tippecanoe Basin. .Welx Scott 



