618 



SCIENCE 



[N. S. Vol. XLHI. No. 1113 



' ' Concerning the Report of the Survey of Lake 

 Maxinkuekee, ' ' by Amos W. Butler. 



"A Field Trip in General Science," by B. H. 

 Schockel. 



' ' The Tobacco Problem, ' ' by Robert Hessler. 



' ' Histological Changes in Testes of Vasectomized 

 Animals," by Burton D. Myers. 



' ' The Minimum Lethal Infecting Dose of Try- 

 panosomes, ' ' by C. A. Behrens. 



' ' Tolerance of Soil Bacteria to Media Varia- 

 tions, " by H. A. Noyes. 



"Some Methods for the Study of Plastids in 

 Higher Plants, " by D. M. Mottier. 



"The Morphology of Bicda fluitans," by Fred 

 Donaghy. 



"Plants not Hitherto Reported from Indiana," 

 by Chas. C. Beam. 



' ' Indiana Fungii, " by J. M. Van Hook. 



"The Second Blooming of Magnolia soulangi- 

 ana," by D. M. Mottier. 



"Additional Notes on Rate of Tree Growth," 

 by Stanley Coulter. 



"The Effect of Centrifugal Force on Plants," 

 by F. M. Andrews. 



' ' Some Preliminary Notes on the Stem Analyses 

 of White Oak," by Burr N. Prentice. 



"Botanic vs. Biologic Gardens" (illustrated by 

 specimens), by Robert Hessler. 



"Soliible Salts of Aluminum in Water from an 

 Indiana Coal Mine, " by S. D. Conner. 



' ' Detection of Nickel in Cobalt Salts, " by A. R. 

 Middleton and H. L. Miller. 



' ' The "Use of the Spectrophotometer in Chem- 

 ical Analysis," by George Spitzer and D. C. 

 Duncan. 



"The Different Methods of Estimating Protein 

 in Milk," by George Spitzer. 



"A New Cave Near Versailles," by A. J. 

 Bigney. 



"Loess Deposits in Vigo County, Indiana," by 

 Wm. A. McBeth. 



"Volume of the Glacial Wabash River," by 

 Wm. A. McBeth. 



"A Geologic Map of the Terre Haute Region," 

 by B. H. Schockel. 



"A Bibliography of Geographical Material," 

 by B. H. Schockel. 



"Settlement and Development of the Lead and 

 Zinc Mining Region of the Upper Mississippi," by 

 B. H. Schockel. 



' ' A Few Science Wonders of the Cement Age ' ' 

 (lantern), by F. W. Gottlieb. 



' ' The Fauna of the Trenton and Black River 

 Series of New York, " by H. N. Coryell. 



' ' Gamma Coefficients with Applications to the 

 Solution of Difference Equations and Determina- 

 tion of Symmetric Functions of the Roots of an 

 Equation in the Terms of the Coefficients," by 

 Arthur S. Hathaway. 



' ' Some Determinants Connected with the Ber- 

 noulli Numbers," by K. P. Williams. 



' ' Some Relations of Plane to Spheric Geom- 

 etry, ' ' by David A. Rothrock. 



' ' Some Notes on the Mechanism of Light and 

 Heat Radiations," by James E. Wyant. 



"A Standard for the Measurement of High 

 Voltages, ' ' by C. Francis Harding. 



"Ionization Produced by Different Thicknesses 

 of Uranium Oxide," by Edwin Morrison. 



' ' Radioactivity of Richmond Water, ' ' by Edwin 

 Morrison. 



"A Student Photographic Spectrometer" (lan- 

 tern), by Edwin Morrison. 



"An Experimental Determination of the Veloc- 

 ity of Sound Waves of Different Intensities" 

 (lantern), by Arthur L. Foley. 



"A Simple Method of Harmonizing Leyden Jar 

 Discharges" (lantern), by Arthur L. Foley. 



' ' An Electroscope for Measuring the Radioac- 

 tivity of Soils" (lantern), by R. R. Ramsey. 



"Some Photographs of Explosions in Gas" 

 (lantern), by John B. Duteher. 



' ' The Cause of the Variation in the Emanation 

 Content of Spring Water" (lantern), by R. R. 

 Ramsey. 



"A Standard Condenser of Small Capacity" 

 (lantern), by R. R. Ramsey. 



"A Comparison of Calculated and Experimental 

 Radii of the Ring System by Diffraction and an 

 Extension of Lommel's Work in Diffraction" 

 (lantern), by Mason E. Hufford. 



"Rate of Humification of Manures," by R. H. 

 Carr. 



"An Instance of Division by Constriction in the 

 Sea-Anemone, Sagartia luci^ce," by Donald W. 

 Davis. 



"Data on the Food of Nestling Birds," by Will 

 Scott and H. E. Enders. 



' ' Two New Mutations and Their Bearing on the 

 Question of Multiple Allelomorphs," by Roscoe R. 

 Hyde. 



"A Study of the Oxygenless Region of Center 

 Lake, ' ' by Will Scott and H. G. Imel. 



' ' The Lakes of the Tippecanoe Basin, ' ' by Will 

 Scott. 



A. J. BiQNET, 



Secretary (^Betiring) 



