PAGE 



That Erroneous Hiawatha, by Albert B. Reagan 161 



The Medicinal Value of Ewpatorium perfoliatum, by A. J. Bigney. . . . 163 

 Refractive Index as a Measure of Dry Substance in Saccharine 



Products, by A. Hugh Bryan 165 



Conductivity of Certain Salts in Ethyl Amine, by E. G. Mahin 175 



A Study of the Chemical Composition of Butter Fat, by O. F. Hun- 



ziker and George Spitzer 181 



On a New Complex Cyanogen Compound, by A. R. Middleton 197 



The Determination of Endothermic Gases by Combustion, by A. R. 



Middleton 199 



Methods in Solid Analytics, by Arthur S. Hathaway 201 



Motion of n Bodies, by Arthur S. Hathaway 203 



Direct Reading Accelerometers, by C. R. Moore 205 



Notes on the Strength of Concrete Building Blocks, by H. H. Scofield. . 225 



Polarization of Cadmium Cells, by Rolla R. Ramsay 229 



An Investigation of a Point Discharge in a Magnetic Field, by Oscar W. 



Silvey 233 



The Tenacity of Gelatine, by A. L. Foley 243 



Cohesion of Water as Modified by Certain Dissolved Salts, by Edwin 



Morrison 249 



Some Features of Delta Formation, by Charles R. Dryer 255 



A Physiographic Survey of an Area near Terre Haute, Ind. by Charles 



R. Dryer and Melvin K. Davis 263 



The Collecting Area of *he Waters of the Hot Springs of Hot Springs, 



Ark., by A. H. Purdue 269 



Where Do the Lance Creek ("Ceratops") Beds Belong, 'n the Creta- 

 ceous or Tertiary? by Oliver P. Hay 277 



Paleonto'ogy and the Recapitulation Theory, by E. R. Cumings 305 



The Tippecanoe, an Infantile Drainage System, by W. A. McBeth 341 



A Paired Entoplastron in Tryonix and Its Significance, by H. H. Lane. . 345 

 Some Notes on Parasites Found in Frogs in the Vicln ty of St. Paul, 



Minn., by H. L. Osborn 351 



The Mocking Bird about Moores Hill, Ind., by A. J. Bigney 353 



Observations on Woodpeckers, by John T. Campbell 354 



Observations on Cerebral Localization, by J. Rollin Slonaker 355 



The Evolution of Insect Galls a> Illustrated by the Genus Amphibolips, 



by Mel. T. Cook 363 



