A description of the character of the bond as a superposition of homopolar and ionic bonding is a very useful approximation in quantum-mechanical research on the properties of molecules. In the LiH molecule, it may be assumed with sufficient accuracy that the bond is formed by two electrons, since, besides the outer electrons composing the bond, there is only a closed layer of inner electrons in the lithium atom.

The authors consider the scattering of slow neutrons in crystals of identical nuclei. Formulas are derived for the elastic and inelastic scattering of neutrons.

Formulas are derived for determining the refractive index of ordinary crystals and magnetized substances (ferromagnetic and paramagnetic) for slow neutrons.

A simple method is proposed for considering the problem of resonance scattering of slow particles.

The authors worked out a method for obtraining piperazines and dihydro-pyrasines.

The problem of establishing the laws governing the behavior of the curve of magnetic permeability have occupied many researchers. Stoletov's curve is examined in this article.

A new type of high frequency discharge is investigated.

The equations of Proka in the field of the plane wave are considered in this paper. When the energies of the incident quantum are large, a solution is reached in a closed form. On the basis of the solutions obtained, the diffusion of light on a meson is evaluated by the method of delayed potentials.

In this paper the authors refer to new activities induced by neutron bombardment.

the Physical constants of the phosphorous acid esters listed in the article are of interest because compounds of this general type may exhibit specific toxic properties or serve as intermediates in the preparation of toxic compounds.

The information about electrolytic representation of dichloroethylene is presented in this study.

A study is made of the inelastic collision of slow neutrons with ferromagnetic substances at low temperatures. Such collisions are government by the excitation and adsorption of spin waves in the ferromagnetic materials by the neutrons.

The surfaces of adsorbents are highly non-uniform, yet small portions thereof are fairly uniform and in the case of dehydrogenation-catalysts and dehydration-catalysts these constitute active centers of catalysis.

The paper represents an effort to make a quantitative determination of actinium by the emanation method in a continuous current of air.

This article aims at showing the possibility of observing the selective absorption of x-radiation by the so-called method of "autoindication" whose analogue is widely used in the physics of neutrons.

Research on the difference for which interference can be observed depending on the width of the spectral line used.

The 13C is enriched by approximately 0.2% in the liquid phase. This indicates that the hydrocyanic acid dissolved in the glacial acid can be only slightly dissociated.

In view of the high volatility of zirconium chloride, the experimental investigation was limited to samples containing less that 90% of zirconium chloride by weight.

Because of the great experimental difficulties involved, binary water-salt systems have seldom been investigated at temperatures about 100 degrees.

The saponification of methyl and ethyl acetate by acids is the classical example of the effect of an unaided ion in catalysis.

In this work the author investigates the temperature dependence of specific electrical conductivity, Hall's constant, thermo-emf and magnetic susceptibility of the intermetallic compound Mg2Sn

The author describes a process by which he discovered a way of integrating the diffusion equation with variable diffusion coefficients.

In connection with the determination of the heats of solution of the rare earth metals, the heats of solution of the anhydrous chlorides were at first measured in large amounts of water and from these, the heats of formation were calculated.

The report addresses the heats of solution of the metals and the heats of solution and of formation of the chlorides and iodides. A survey will be presented of the inclusion of yttrium and its compounds into the sequence of the lanthanides.