Optical Determination of the Density of He^{3}

833

Effect of Magnetic Viscosity on the Frequency Properties of Ferrites

839

Ion Scattering Coefficient as a Function of CollidingParticle Mass Ratio

845

Formation of Negative H^{} Ions in Collisions of Electrons with Hydrogen Molecules

851

Paramagnetic Relaxation in Single Crystals of Certain Salts of the Elements of the Iron Group

856

A GroupTheoretical Consideration on the Basis of Relativistic Quantum Mechanics. I. The General Properties of the Inhomogeneous Lorentz Group

861

Electrical Conductivity of Ferromagnetic Semiconductors (Ferrites)

873

Propagation of Cascades in a MultiLayer Medium

877

Correlations in the Distribution of Cascade Particles

883

Polarization of Nucleons Elastically Scattered Against Target Particles of Spin 1

889

Nuclear Forces and the Scattering of π Mesons

901

A New Possibility in Neutrino Theory

910

Nonlinear Theory of Phase Oscillations Induced in Electron Synchrotrons by Quantum Radiation Fluctuations

913

The Relation between Matrix Elements for "Particles" and "Holes" in Nuclear Shell Theory

918

The Energy Dependence of a Scattering Cross Section Near the Threshold of Reaction

923

The Influence of a He^{3} Impurity on the Viscosity of Helium II

929

The Use of Leontovich's Boundary Conditions in the Theory of Cerenkov Radiation

933

Thermodynamics of the He I  He II Phase Transitions in Helium Isotope Mixtures

936

On the Equations of the Oscillations of the Molecular Generator

945

The Interaction of Shock Waves with Small Perturbations. I

948

The Interaction of Shock Waves with Small Perturbations. Il

962

Time Reversal and Reactions Involving Polarized Particles

975

On the Method of "Second Quantization" in Phase Space

982

Nuclear Reactions in SuperDense Cold Hydrogen

991

Behavior of Nonmetallic Crystals in Strong Electric Fields

994

Selection Rules for Electromagnetic Transitions in Deformed Nuclei

1004

Scattering of Slow Neutrons in Ferromagnets

1010

The Theory of Electromagnetic Waves in a Crystal in which Excitons Are Produced

1022

LETTERS TO THE EDITOR 
Conversion of L II and LIII Electrons with Emission of E1Quantum in E0 Nuclear Transitions

1037

Sign of the Space Charge on the Axis of a Positive Column in a Longitudinal Magnetic Field

1039

Contribution to the Theory of Stripping at High Energies

1040

Paramagnetic Resonance in Neodymium Nitrate

1042

Radiation Corrections to Particle Scattering in External Field and to Compton Effect in Scalar Quantum Electrodynamics

1044

Magnetic Resonance of Nuclei of Paramagnetic Atoms

1045

Elastic Scattering of Mesons by Helium Nuclei at 300 Mev

1047

Nucleon Energy Levels in Spheroidal Nuclei

1049

Diffraction Scattering of HighEnergy Protons by Protons

1051

Paramagnetic Resonance in New Organic Radicals

1053

Asymptotic Selection Rules for Beta Decay of Deformed Nuclei

1054

Polarization of 635Mev Protons by Deuterons in QuasiElastic pp Scattering

1056

Concerning a Symmetry Property of the New GellMann Theory

1058

Superconductivity of Beryllium Films Condensed on a Cold Backing

1059

Comparison of Calorimetric and Ionization Measurements of the Energy Flux of Synchrotron Gamma Rays

1060

On the Question of the Fluctuations of Electron Concentration in the FLayer of the Ionosphere

1062

Photoproduction of Strange Particles

1063

On the Use of Two Auxiliary Fields to Obtain Emission States in Quantum Mechanical Amplifiers and Generators

1064

Limiting Laws for Surface Tension of Solutions of Strong Electrolytes

1065

Refinement of the Approximation for Small Angles in MultipleScattering Problems

1067

Comparison of Neutron Spectra in the Fission of U^{233}, U^{235}, Pu^{239}

1069

Concerning the Reality of the Nonstationary Model of the Intermediate State

1071

Spins and Parities of the Hyperfragment H^{4}_{Λ} and of the K Meson

1072

Radiation From an Electron Traversing a Slab

1074

Influence of Electrostatic Field on the Absorption of Sound in Rochelle Salt

1075

Cyclotron Resonance in Tin at 9300 Mcs

1076
