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•	Neutron Diffraction in Liquid Sulfur, Lead, and Bismuth Owen Chamberlain pp. 305-313 [View   PDF (1485 kB) ]

•	Neutron Deficient Radioactive Isotopes of Rhenium Geoffrey Wilkinson and Harry G. Hicks pp. 314-318 [View   PDF (786 kB) ]

•	On the Theory of Slow Neutron Scattering by Liquid Helium L. Goldstein, D. Sweeney, and M. Goldstein pp. 319-329 [View   PDF (2153 kB) ]

•	Experimental Photo-Fission Thresholds in 92U235, 92U238, 92U233, 94Pu239, and 90Th232 H. W. Koch, J. McElhinney, and E. L. Gasteiger pp. 329-336 [View   PDF (1489 kB) ]

•	Multiple Production of Mesons Phyllis Freier and E. P. Ney pp. 337-341 [View   PDF (1212 kB) ]

•	A Cloud-Chamber Study of Cosmic-Ray Nuclear Interactions at 3260 Meters Elevation W. W. Brown and A. S. McKay pp. 342-354 [View   PDF (3577 kB)  See Also: Erratum]

•	Nuclear Dipole Vibrations and the Surface Symmetry Energy R. D. Present pp. 355-356 [View   PDF (430 kB) ]

•	The Self-Stress of the Electron F. Rohrlich pp. 357-360 [View   PDF (655 kB) ]

•	On the Effects of Internal Nuclear Motion on the Hyperfine Structure of Deuterium Francis Low pp. 361-370 [View   PDF (1452 kB) ]

•	Numerical Value of the Lamb Shift H. A. Bethe, L. M. Brown, and J. R. Stehn pp. 370-374 [View   PDF (843 kB) ]

•	On the Solar Origin of Cosmic Radiation. II H. Alfvén pp. 375-379 [View   PDF (1047 kB) ]

•	On Some Low Ionizing Radiation Observed by Measurements of Cosmic Radiation at Great Depths M. Miesowicz, L. Jurkiewicz, and J. M. Massalski pp. 380-383 [View   PDF (793 kB) ]

•	Surface Impedance of Superconducting Tin, Mercury, and Lead at 9200 Mc/Sec. I. Šimon pp. 384-387 [View   PDF (765 kB) ]

•	Theory of Impurity Scattering in Semiconductors E. Conwell and V. F. Weisskopf pp. 388-390 [View   PDF (558 kB) ]

•	Evaluation of the Stiffness Coefficients for Beryllium from Ultrasonic Measurements in Polycrystalline and Single Crystal Specimens Louis Gold pp. 390-395 [View   PDF (997 kB) ]

•	A Note on the Quantization of Dissipative Systems Wesley E. Brittin pp. 396-397 [View   PDF (257 kB) ]

•	Mass Spectrographic Identification of Radioactive Lanthanum Isotopes R. A. Naumann, F. L. Reynolds, and I. Perlman pp. 398 [View   PDF (329 kB) ]

•	Measurement of the Earth's Magnetic Field at High Altitudes at White Sands, New Mexico S. F. Singer, E. Maple, and W. A. Bowen pp. 398-399 [View   PDF (536 kB) ]

•	The Beta-Rays of K40 P. R. Bell, Boyd Weaver, and J. M. Cassidy pp. 399-400 [View   PDF (358 kB) ]

•	Phase Relations in He3-He4 Solutions B. Weinstock, D. W. Osborne, and B. M. Abraham pp. 400-401 [View   PDF (365 kB) ]

•	Effects of Electrical Forming on the Rectifying Barriers of n- and p-Germanium Transistors J. Bardeen and W. G. Pfann pp. 401-402 [View   PDF (427 kB) ]

•	Composite of Experimental Measurements of the Energy-Distribution among Beta-Particles from Tritium E. P. Cooper and F. T. Rogers pp. 402-403 [View   PDF (443 kB) ]

•	Natural Ferromagnetic Resonance A. J. Welch, P. F. Nicks, Alan Fairweather, and F. F. Roberts pp. 403 [View   PDF (230 kB) ]

•	Beta-Spectrum and Decay Scheme of 65Tb160 S. B. Burson, K. W. Blair, and D. Saxon pp. 403-404 [View   PDF (376 kB) ]

•	The Beta-Spectrum of He6 V. Perez-Mendez and H. Brown pp. 404-405 [View   PDF (352 kB) ]

•	An Anomalous Dielectric Effect of Vacuum-Sputtered CaF2 Layers Erkki A. Laurila pp. 405-406 [View   PDF (372 kB) ]

•	The Response of the Anthracene Scintillation Counter to Monoenergetic Electrons John I. Hopkins pp. 406-407 [View   PDF (364 kB) ]

•	Energy Bands and Mobilities in Monatomic Semiconductors W. Shockley and J. Bardeen pp. 407-408 [View   PDF (347 kB) ]

•	Color Centers in Calcium Fluoride and Barium Fluoride Crystals Alexander Smakula pp. 408-409 [View   PDF (351 kB) ]

•	Gamma-Rays of K40 P. R. Bell and J. M. Cassidy pp. 409-410 [View   PDF (417 kB) ]

•	Zenith Angle Dependence of Extensive Air Showers H. L. Kraybill pp. 410-411 [View   PDF (476 kB) ]

•	The "1947 Values" of the Atomic Constants and the Revision of the Faraday Constant Jesse W. DuMond pp. 411 [View   PDF (262 kB) ]

•	A Note on the Li7(p,n)Be7 Reaction and an Excited State of Be7 T. A. Hall pp. 411-412 [View   PDF (509 kB) ]

•	Fast Protons from the Absorption of π--Mesons by Nuclei Stephen Tamor pp. 412-413 [View   PDF (492 kB) ]

•	Upper and Lower Bounds of Eigenvalues Tosio Kato pp. 413 [View   PDF (245 kB) ]

•	Neutrons from Li7(p,n)Be7 V. R. Johnson, M. J. Laubenstein, and H. T. Richards pp. 413-414 [View   PDF (461 kB) ]

•	The Electromagnetic Concentration of Be10 C. P. Keim, H. W. Savage, and Boyd Weaver pp. 414 [View   PDF (216 kB) ]

•	General Relation between Genuine and Chance Coincidences and Its Application to Measurement of High Activity Sources Z. Bay and M. M. Slawsky pp. 414-415 [View   PDF (439 kB) ]

•	On the Motion of Particles in a Traveling Wave Linear Accelerator John R. Terrall pp. 415-416 [View   PDF (439 kB) ]

•	Note on Nuclear Models Hoff Lu pp. 416 [View   PDF (216 kB) ]

•	Measurement of Some Weak γ-Ray Intensities G. R. Bishop, Richard Wilson, and H. Halban pp. 416-417 [View   PDF (453 kB) ]

•	On the Classification of the Spectrum of Singly Ionized Uranium J. Rand McNally pp. 417-418 [View   PDF (481 kB) ]

•	On the Relativistic Electromagneto-Ionic Theory of Wave Propagation V. A. Bailey pp. 418-419 [View   PDF (451 kB) ]

•	Calculation of Decay Times from Coincidence Experiments Z. Bay pp. 419 [View   PDF (208 kB) ]

•	On the Energy Spectrum of Heavy Nuclei in Primary Cosmic Radiation M. S. Vallarta pp. 419-420 [View   PDF (412 kB) ]

•	Longitudinal Photons in Quantum Electrodynamics F. J. Dyson pp. 420 [View   PDF (204 kB) ]

•	The Microwave Spectrum of Bromine Monofluoride D. F. Smith, M. Tidwell, and D. V. Williams pp. 420-421 [View   PDF (409 kB) ]

•	Intensity Distribution of the Second Positive (C3Π→B3Π) Band System of Molecular Nitrogen R. W. Nicholls pp. 421 [View   PDF (205 kB) ]

•	New Types of Microwave Transitions Involving l-Type Doubling in OCS and HCN R. G. Shulman and C. H. Townes pp. 421-422 [View   PDF (399 kB) ]

•	Minutes of the Meeting of the New England Section at Williams College, Williamstown, Massachusetts, October 22, 1949 pp. 422-424 [View   PDF (659 kB) ]