30 



On a New Complex Cyanogen Compound A. R. Middleton 



The Determination of Endotherinic Gases by Combustion. . .A. R. Middleton 



Mathematics 



Methods in Solid Analytics. 15 minutes Arthur S. Hathaway 



Motion of n Bodies. 20 minutes Arthur S. Hathaway 



Discussion of the Regular Inscribed Pentagon. 5 minutes. . .John C. Gregg 

 If the Bisectors of Two Angles of a Triangle are Equal. Those Angles 



are Equal. 5 minutes John C. Gregg 



Physics 



Direct Reading Aceelerometers. 20 minutes C. R. Moore 



Recent Work in Wood Physics. 10 minutes W. K. Hatt 



Expansion of Paving Blocks. 10 minutes W. K. Hatt 



Notes on the Strength of Concrete Building Blocks. 10 minutes 



H. H. Schofield 



Slip of Riveted Joints. 10 minutes Albert Smith 



Polarization of Cadmium Cells Rolla R. Ramsey 



Investigation of a Point Discharge in a Magnetic Field. . . .Oscar W. Silvey 



The Tenacity of Gelatine Arthur L. Foles r 



Objections to LaPlaee's Theory of Capillarity Arthur L. Foley 



Cohesion of Water as Modified by Certain Dissolved Salts. 10 



minutes Edwin Morrison 



Geology and Geography. 



Some Features of Delta Formation. 15 minutes Charles R. Dryer 



A Physiographic Survey of an Area Near Terre Haute. Ind. 25 min- 

 utes Charles R. Dryer, Melvin K. Davis 



The Collecting Area of the Waters of the Hot Springs of Hot Springs. 



Ark. 15 minutes A. H. Purdue, University of Arkansas 



The Geographical and Geological Distribution of Some Pleistocene 



Mammals O. P. Hay, TJ. S. National Museum 



On the Restoration of Skeletous of Fossil Vertebrates O. P. Hay 



Where Do the Lance Creek ("Ceratops") Beds Belong, in the Cretace- 

 ous or Tertiary? Oliver P. Hay 



Paleontology and the Recapitulation Theory. 50 minutes . . . . E. R. Cumings 

 The Tippecanoe, an Infantile Drainage System. 10 minutes. .W. A. McBeth 

 Observations on Cyclones and Anti-Cyclones of North Temperate Lati- 

 tudes. 10 minutes W. A. McBeth 



Zoology. 



A Paired Entoplastron in Trionyx and Its Significance. 15 min- 

 utes Henry H. Lane, Oklahoma State University 



