41 



*N()tt's on the lU'liitioii of the .Xative Vc^^t'tation to Surface (ieold.uy 



as Observed in Indiana. By title C. W. Slianiiun 



■•"The Mansfield Sandstone Area of Indiana. By title ('. W. Shannon 



Remarks on the Value of Core Drillini; in Regions of Questionable 



Stratigraphie Succession. 10 ni J. W. Beede 



The Deternjination of Hydrogen, Methane and Nitrogen in Gas by 



Combustion in Quartz Tube. 2 m F. C. Mathers and Ira Lee 



New Methods for the Preparation of Selenates. 2 m 



F. Mathers and J. Otto Frank 



A New (Qualitative Test for Chlorides In the Presence of Bromides 



and Iodides. 2 m F. C. Mathers and li'a Lee 



Electroplating in Colloidal solutions. 10 m James E. Weyant 



EVENING SESSION, 8:15 P. M. 



The Photography of Sound Waves. Lantern. 20 m A. L. Foley 



A Brief Account of the Indiana University Expedition to Columbia. 



Lantern. 30 m C. II. Eigenmaim 



Papers not Read at the Previous Sessions. 



