Program of Winter Meeting 25 



*Some Untenable Acoustic Theories. . . .Arthur L. Foley 

 The Power Required to Drive Spoke and Disk 



Wheels and Pulleys 



Arthur L. Foley and B. Eisenhour 



Why the Logarithm in Logarithmic Decrement? 



R. R. Ramsey 



The Silent Electric Discharge and Its Effects on 



Gases R. H. George and K. A. Oplinger 



The Electrometric Titration of Boric Acid in the 

 Presence of Polyphenols and of Organic Acids 

 M. G. Mellon and V. N. Morris 



*Calculating the Results of a Volumetric Analysis 



M. G. Mellon 



*The Corrosion of Lead Cable Sheath by Indiana 



Soils F. O. Anderegg 



*Some Calculations of the Composition of Liquid 



Water F. O. Anderegg 



*The Influence of Certain Factors on the Hydrogen 



Ion Concentration of Milk Eli Duncombe 



*Some Farm Chemistry I Have Met R. H. Carr 



*Electrometric Titration of the Vegetable Akaloids 



E.G. Mahin and G. B. Wilson 



*Tests of New Alloys for Permanent Magnets 



CM. Smith 



*0n the Verification of Lommel's Theory of Dif- 

 fraction Mason E. Hufl"erd 



Familiarizing Chemistry Students with the Gram- 

 Molecular Volume of Gases W. M. Blanchard 



GEOLOGY— GEOGRAPHY. 



*The Lost River Region and a Guide to Its Study 



Clyde A. Malott 



*The Deepening and Widening of Valleys 



Clyde A. Malott 



*Notes on a Few Cretaceous Species of Western 



America, Most of Them New to Science 



Albert B. Reagan 



*Indian Funerals Albert B. Reagan 



*Whaling off the Olympic Peninsula of Washington 



Albert B. Reagan 



*A West Coast Indian Honeymoon. . . . Albei"t B. Reagan 

 *Data on the Use of Indiana Dune Sand for Track 



Elevation in Chicago S. S. Visher 



*Geology of the Coal Measures of Indiana. .W. N. Logan 

 A Change of Drainage of Raccoon Creek, Parke 



County, Indiana Glenn G. Bartle 



The Development of the Soil Survey T. M. Bushnell 



*A Groundwater Experiment at South Bend, Indiana 



W. M. Tucker 



* Papers starred not published in this Proceedings. 



