GEOCHEMISTRY

N. P. Zatenatskaia. A contribution to the problem as to the relation between the cations of interstitial waters and exchange cations of argillaceous rocks . . . 192

I. L. Ettinger. Changes taking place in the structure of fossil coals in the course of their spontaneous activation . . . 196

SOIL SCIENCE

N. G. Zyrin, E. A. Kornblum. Some peculiar traits in the behaviour of iron in the soils of the flood plain in the upper reaches of the Amur river . . . 200

HISTOLOGY

I. N. Zotikova. The role played by the innervation of mammary gland in the regulation of milk fat secretion in white mice . . . 204

BIOPHYSICS

L. V. Cherezhanova, N. P. Dubinin. The cytogenetic effect of ionizing radiation and of streptomycin . . . 208

BIOCHEMISTRY

G. P. Georgiev. On the role of the nucleus in the synthesis of low-polymer ribonucleic acid (S-RNA) . . . 211

I. S. Luganova, I. F. Seitz. Glycogen in human leucocytes, and its transformations . . . 215

E. L. Rosenfel’d, M. E. Preobrazhenskaia, V. M. Kuznetsova. Peculiarities in the structure of yeast glucans active with regard to the properdin system of blood . . . 219

PLANT PHYSIOLOGY

M. S. Bardinskaia, L. D. Prusakova, T. A. Schubert. On plant growth regulators of polyphenol origin . . . 222

M. Kh. Chailakhian, T. V. Nekrasova. The dormancy period of the peach-plant, and the ability of its cuttings to form shoots and roots . . . 226

M. J. Shkol’nik, V. N. Davydova. On partial elimination of zinc deficiency in plants, effectuated with the aid of vitamins B₁ and B₆ . . . 230

EXPERIMENTAL MORPHOLOGY

V. P. Kudokotse v. Regeneration process of extremity in lizard, stimulated by the method of supplementary innervation . . . 233

EVOLUTIONAL MORPHOLOGY

E. D. Regel’. The cartilage palatoquadratum and its connexions with the axial cranium in Hynobius kayserlingii . . . 237

PHYSIOLOGY

N. A. Aladjalova, A. V. Kol’tsova. Horary fluctuations of electric activity in encephalon structures . . . 241

N. P. Movchan. On the development of supraliminal inhibition . . . 245

V. S. Sheveleva. The development of spontaneous bioelectric activity in different parts of the nervous system during ontogeny . . . 249

EMBRYOLOGY

K. M. Kurnosov. On interfœtal placentary connections observed during embryonic parabiosis in Cervus altes . . . 253

CORRECTION

In my article (S. V. Simeonov, “On a process of successive approximations and its application to the solution of functional equations with nonlinear operators of monotone type”), published in DAN, vol. 138, no. 5, 1961, the following correction must be made: on p. 1034, line 16, where it is printed

\[ \alpha=\frac{2}{\pm K-2}, \]

it should read

\[ \alpha=\frac{1}{\pm K-1}. \]

S. V. Simeonov

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