936 



SCIENCE 



[N. S. Vol. XXXVIII. No. 991 



TSE AMEMICAN PHYSICAL SOCIETY 



The regular Thanksgiving meeting of the Phys- 

 ical Society was held in Eyerson Physical Labora- 

 tory, University of Chicago, on Friday and Satur- 

 day, November 28 and 29, 1913. The program 

 was as follows: 



Friday Afternoon 



"Quantum Theory and Radiation," by C. E. 

 Mendenhall. 



"Quantum Theory and Photoelectric Effect," 

 by R. A. Millikan. 



' ' Quantum Theory and Statistical Mechanics, ' ' 

 by Mas Mason. 



"Quantum Theory and Atomic Structure," by 

 Jacob Kunz. 



' ' Quantum Theory and Specific Heats, " by A. 

 C. Lunn. 



Saturday 



"The Relation between Photo-potentials and 

 Frequency," by W. H. Kadeseh. 



"A Study of Contact P.D. 's between Metal 

 Surfaces Prepared in Vacuo; the Effect of Ultra- 

 violet Light upon these P.D.'s; and the Mutual 

 Relation between Positive Potential and Contact 

 P.D.'s," by Albert E. Henning. 



"Anomalous Temperature Effects upon Mag- 

 netized Steel," by N. H. Williams. 



"Experimental Determination of the Earth's 

 Rigidity," by A. A. Michelson. 



"A New Maximum in the Wave-length sensibil- 

 ity Curves of Selenium," by F. C. Brown and L. 

 P. Sieg. 



"Evidence of a Diumally Reversing Convec- 

 tional Circulation of the Atmosphere Over the 

 Upper Peninsula of Michigan," by Eric R. Miller. 

 (By title.) 



' ' Polarization of Long- wave Infra-red Radia- 

 tion by Wire Gratings," by A. D. Cole. 



' ' Glow Discharge in a Magnetic Field, " by R. 

 F. Earhart. 



"A Polarization Spectrophotometer Using the 

 Brace Prism," by Harvey B. Lemon. 



"Certain Experiments in Sound Diffraction," 

 by G. W. Stewart and Harold Stiles. 



"Effect of Space Charge and Residual Gases on 

 the Thermionic Current in High Vacuum," by 

 Irving Langmuir. 



' ' Arrival Curves with Artificial Long Lines, ' ' 

 by Caxl Kinsley. 



' ' An Attempt at an Electromagnetic Emission 

 Theory of Light," by Jacob Kunz. 



' ' Theory and Use of the Molecular Gauge, ' ' by 

 Saul Dushman. 



"A Modified Method of Measuring e/m and v 

 for Cathode Rays," by L. T. Jones. 



' ' An Experimental Determination of the Cor- 

 rection to the Law of Stokes for Palling Bodies, 

 and of the Value of the Elementary Charge e," 

 by John Y. Lee. 



' ' On the Coefficient of Slip Between a Gas and 

 a Liquid or Solid," by E. A. Millikan. 



"Note on the Electron Atmospheres (?)," by 

 Carl R. England. 



' ' Vapor Pressure of Molybdenum and Plati- 

 num, ' ' by Irving Langmuir. 



"Disappearance of Gas or Clean-up Effect in 

 Vacuum Tubes," by Irving Langmuir. 



"A New Principle in the Application of Selen- 

 ium to Photometry," by F. C. Brown and L. P. 

 Sieg. 



"Determination of e/m from Measurements of 

 Thermionic Ciurrents, " by Saul Dushman. 



' ' Rate of Decay of Phosphorescence at Low 

 Temperatures," by E. H. Kennard. 



"Determination of the Sun's Temperature," 

 by G. A. Shook. 



' ' The Theory of Photoelectric and Photochem- 

 ical Effects," by O. W. Richardson. 



"Photoelectric Potentials of Cathode Films," 

 by P. H. Dike. 



"The Temperature Coefficient of Young's 

 Modulus of an Iron Wire, " by H. L. Dodge. 



' ' The Temperature Distribution in an Incan- 

 descent Lamp Filament near a Cooling Junction," 

 by A. G. Worthing. 



' ' Further Experiments on Magnetization by 

 Angular Acceleration," by S. J. Barnett. 



' ' Production of Gases in Vacuum Tubes, ' ' by 

 G. Winchester. 



' ' A Precision Relay, ' ' by Carl Kinsley. 



' ' A Thermopile of Bismuth-alloy, ' ' by W. W. 

 Coblentz. (By title.) 



A. D. Cole, 

 Secretary 



THE CONVOCATION WHEK MEETING OF 

 SCIENTIFIC SOCIETIES 



The American Association for the Advance- 

 ment of Science and the national scientific 

 societies named below wiU meet at Atlanta, 

 Ga., during convocation week, beginning on 

 December 29, 1913. 



