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SCIENCE 



[X. S. Vol. XXXI. No. 792 



gestions for Practical Disinfection," Severance 

 Burrage. 



" Indiana Problems in Sewage Disposal," R. L. 

 Sackett. 



" Defective Elementary Science," William N. 

 Heiney. 



" Some Hoosier and Academy Experiences," C. 

 A. Waldo, Washington University. 



"Darwin Fifty Years After," David Starr Jor- 

 dan, president Leland- Stanford Jr. University. 



" Streamers that Show Reversal of Curvature 

 in the Corona of 1893," John A. Miller. 



" That Erroneous Hiawatha," Albert B. Reagan. 



Chemistry 



" Methods and Materials used in Soil Testing," 

 H. A. Huston, Chicago, III. 



" The Discovery of the Composition of Water " 

 (illustrated), W. A. Noyes, University of Illinois. 



" Molecular Rearrangements of Derivatives of 

 Camphor," W. A. Noyes. 



" Use of Refractometer in Dry Substance Esti- 

 mation," A. Hugh Bryan, U. S. Bureau of Chem- 

 istry. 



" Conductivity and Ionization of Solutions of 

 Certain Salts in Ethyl Amine," E. G. Mahin. 



" Recent Progress in Chemistry," H. W. Wiley, 

 chief of the Bureau of Chemistry, U. S. Depart- 

 ment of Agriculture. 



" Electric Osmose," Harry N. Holmes. 



" On a New Complex Copper Cyanogen Com- 

 pound," A. R. Middleton. 



" Determination of Endothermic Gases by Com- 

 bustion," A. R. Middleton. 



Mathematics 



"A Method of Instruction in Solid Analytical 

 Geometry," Arthur S. Hathaway. 



" The Relative and Reduced Equations of Motion 

 of n Bodies in Space of n Dimensions or Less," 

 Arthur S. Hathaway. 



" Discussion of the Regular Inscribed Penta- 

 gon," John C. Gregg. 



"If the Bisectors of Two Angles of a Triangle 

 are Equal, those Angles are Equal," John C. 

 Gregg. 



Physics 



" Direct Reading Acoelerometers," C. R. Moore. 



"Recent Work in Wood Physics," W. K. Hatt. 



" Expansion of Paving Blocks," W. K. Hatt. 



" Strength of Building Block," H. H. Schofield. 



" Slip of Riveted Joints," Albert Smith. 



" Polarization of a Cadmium Cell," Rolla R. 

 Ramsey. 



" Investigation of the Point Discharge in a 

 Magnetic Field," Oscar W. Silvey. 



" The Tenacity of Gelatine," Arthur L. Foley. 



" Objections to LaPlace's Theory of Capillarity," 

 Arthur L. Foley. 



" Cohesion of Water as Modified by Certain Dis- 

 solved Salts," Edwin Morrison. 



Geology and Geography 



" Some Features of Delta Formation," Charles 

 R. Dryer. 



" A Physiographic Survey of an Area near Terre 

 Haute, Ind.," Charles R. Dryer, Melvin K. Davis. 



" The Collecting Area of the Waters of the Hot 

 Springs of Hot Springs, Ark.," A. H. Purdue, 

 University of Arkansas. 



■■ The Geographical and Geological Distribution 

 of Some Pleistocene Mammals," 0. P. Hay, U. S. 

 National Museum. 



" On the Restoration of Skeletons of Fossil 

 A ertebrates," 0. P. Hay. 



" Paleontology and the Recapitulation Theory," 

 E. R. Cummings. 



" The Tippecanoe, an Infantile Drainage Sys- 

 tem," W. A. McBeth. 



" Observations on Cyclones and Anti-cyclones of 

 North Temperate Latitudes," W. A. McBeth. 



Zoology 



" A Paired Entoplastron in Trionyx and its 

 Significance," Henry H. Lane, Oklahoma State 

 University. 



" Physiological Explanation of the Psycho-phys- 

 ical Law of Weber," Guido Bell. 



" On the Nature and Source of Thrombin," L. J. 

 Rettger. 



" Federal Control of International and Inter- 

 state Waters," B. W. Evermann, U. S. Bureau of 

 Fisheries. 



" By Packtrain to the Tiptop of the United 

 States in Quest of the Golden Trout" (illus- 

 trated), B. W. Evermann. 



" The History of Zoology in Indiana," C. H. 

 Eigenmann. 



" An Analytic Study of the Faunal Changes in 

 Indiana," Walter L. Hahn, South Dakota State 

 Normal School. 



" Some Notes on Parasites found in Frogs in 

 the Vicinity of St. Paul in June," H. L. Osborn, 

 Hamline University. 



" The Mocking Bird in Indiana," A. J. Bigney. 



" Cross-fertilization among Fishes," W. J. 

 Moenkhaus. 



" Observations on Woodpeckers," John T. Camp- 

 bell. 



