194 



SCIENCE 



[N. S. Vol. XLV. No. 1156 



On Growth of Crystal Structure in Selenium. 

 F. C. Brown. 



Experimental Evidence for the Parsons Magne- 

 ton. L. 0. Grondahl. 



The Effect of Pressure on the Eesistance of 

 Metals and a Possible Theoretical Explanation. P. 

 W. Bridgman. 



The Infra-red Absorption Bands of Gases and 

 the Application of the Quantum Theory to Molec- 

 ular Rotations. Edwin C. Kemble. 



A Criticism of the Eutherford-Bohr Atomic Hy- 

 pothesis, based upon a Theorem of Phase Equi- 

 librium of two Electrons. Albert C. Crehore. 



A Physical Conception of the Eeason for the Ex- 

 istence of Planck's Constant "h" based upon the 

 Classical Electrodynamics. Albert C. Crehore. 



The Magnetization of Iron, Nickel and Cobalt by 

 Rotation and the Nature of the Magnetic Mole- 

 cule. S. J. Barnett. 



The Internal Structure of Atoms. A. W. HuU. 



A New Count Method of Determining the Ele- 

 mentary Electrical Charge. Harvey Fletcher. 



A Lecture Demonstration of the Capture of Ions 

 by Falling Drops. E. P. Lewis and W. A. Shew- 

 hart. 



Some Undescribed Disintegration Products of 

 Radioactive Elements. Fanny R. M. Hitchcock. 



Recent Progress in Spectroscopy. (Vice-presi- 

 dential address before Section B). E. P. Lewis. 



The Photo-Electric Effect of Radiations in the 

 Extreme Ultra-violet. James Barnes. 



Aluminum and Mercury Atoms under an Electric 

 Field. Eeinhard A. Wetzel. 



Photography of Spectra in Red and Infra-red 

 Regions. WUliam F. Meggers. 



A Relationship between Fluorescence and 

 Planck's Radiation Law. E. H. Kennard. 



The Infra-red Arc Spectra of the Metals of the 

 Fe Group. H. M. Randall and E. F. Barker. 



Some Spectra in the Photographic Infra-red. 

 Charles F. Meyer. 



The Effect of Longitudinal Alternating Mag- 

 netic Fields Upon the Hysteresis Curves Produced 

 by Slowly Varying Currents in a Series of Iron- 

 Carbon Alloys. C. W. Waggoner and H. M. Free- 

 man. 



Experiments vrith the Electric Furnace on the 

 Anomalous Dispersion of Metallic Vapors. (By 

 title.) Arthur S. King. 



The Effect of Oxygen on the Production of Band 

 and Line Spectra in the Electric Furnace. (By 

 title.) Arthur S. King. 



A Polarization Flicker Photometer. Herbert E. 

 Ives. 



Test of Absorption Screen for Optical Pyxom- 

 etry. E. P. Hyde, F. E. Cady and W. E. Forsythe. 



A New Direct Reading Precision Refractometer 

 with Uniformly Divided Scale. G. W. Mofiatt. 



The Minimum Potential Required to Excite the 

 Bahner Series of Hydrogen. James Barnes. 



Impact of Electrons on Mercury Atoms. C. D. 

 Child. 



The Stark Effect. Reinhard A. Wetzel. 



A Proposed Method for Measuring Disturbances 

 in the Earth's Magnetic Field. (By title.) Her- 

 bert Bell. 



The Kathodo-Luminescence Produced by Cer- 

 tain Tribo-Lumiuescent Salts of Zinc. (By title.) 

 G. W. Waggoner. 



Variations in Glow Discharge Produced by a 

 Longitudinal Magnetic Field. E. F. Earhart and 

 C. B. JoUiffe. 



A Time-Current Equation for Making Iron Pas- 

 sive. C. McCheyne Gordon. 



A Calorimetrio Resistance Thermometer. S. Le- 

 roy Brown. 



A New Design of Mercury-Break Buzzer for 

 Generating Electrical Oscillations, and a Study of 

 the Use of Other Buzzers in Radio Measurements. 

 Chas. Moon. 



The Reflectivity of Tungsten. W. Weniger and 

 A. H. Pfund. 



A Determination of C, of Planck's Radiation 

 Law. (By title.) C. E. MendenhaU. 



The Range of Recoil Atoms from Actinium 

 Emanation. L. W. McKeehan. 



The Intensity of X-ray Spectra. (By title.) 

 Arthur H. Compton. 



The Distribution of the Electrons in Atoms. 

 Arthur H. Compton. 



The Effect of Transverse Joints on the Mag- 

 netic Induction in Iron and Nickel. S. E. Wil- 

 liams. 



A Resonance Method for Measuring the Phase 

 Difference of Condensers of Fixed Capacity and a 

 Comparison of Resonance and Bridge Methods. J. 

 S. Ward. 



The Thermophone as a Precision Source of 

 Sound. H. D. Arnold and I. B. CrandaU. 



A Uniformly Sensitive Instrument for the Abso- 

 lute Measurement of Sound Intensity. E. C. 

 Wente. 



Note on the Ionization Manometer. O. E. Buck- 

 ley. 



An Accurate Method for the Determination of 

 Surface Tension. W. D. Harkins and F. E. Brown. 



Surface Tension, Total Surface Energy, Solubil- 



