GEOCHEMISTRY

A. I. Kravtsov; A. I. Fridman. Native gases of ore fields . . . . . . . . . . . . . . 1163

CYTOLOGY

E. M. Brumberg, I. E. Brumberg. Certain possible regulators of cellular growth in the organism . . . . . . . . . . . . . . 1171

HISTOLOGY

F. L. Leites. The topography of lipolytic enzymes at different stages of the evolution of atherosclerotic patches . . . . . . . . . . . . . . 1175

ECOLOGY

N. V. Mironova. The growth of Tilapia mossambica Peters under aquarial conditions . . . . . . . . . . . . . . 1179

MICROBIOLOGY

V. M. Zhdanov, L. A. Mel’nikova, I. A. Kozlova, I. G. Balandin, O. P. Peterson, L. Masharina. Suppression of synthesis of smallpox vaccine virus by histone . . . . . . . . . . . . . . 1182

BIOCHEMISTRY

M. J. Karpeiskii, S. V. Shliapnikov, V. S. Oseledchik. Separation of oxyaminoacids and determination of their configuration with the aid of gas and liquid chromatography . . . . . . . . . . . . . . 1184

L. L. Kiselev, G. N. Zaitseva, L. Iu. Frolova. Degeneration of t-ribonucleic acids in the course of specific interaction with aminoacyl-RNA-synthetases . . . . . . . . . . . . . . 1188

N. I. Mal’tsev, L. M. Ginodman, V. N. Orekhovich. On the origin of the oxygen of the carboxyl group of the product formed in the course of pepsin-catalysed transpeptidation reactions . . . . . . . . . . . . . . 1192

V. V. Mosolov. Changes taking place in the conformation of $\alpha$-chemotrypsin and chemotrypsinogen A in the presence of caprinate . . . . . . . . . . . . . . 1196

PLANT PHYSIOLOGY

A. T. Mokronosov, G. F. Nekrasova. The catalytic role of $\mathrm{CO}_2$ in the assimilation of carbon . . . . . . . . . . . . . . 1200

ZOOLOGY

Iu. E. Lapin. On differences in the number of metameres in larvae of the White-Sea herring . . . . . . . . . . . . . . 1204

PHYSIOLOGY

A. G. Poliakova. On the spreading-ways of afferent signals to the associative cortex . . . . . . . . . . . . . . 1208

A. M. Ugolev, G. M. Roshchina. Variations in appetite for water, glucose, sodium and potassium in rats when the sodium-pump is inhibited by the administration of strophantine K . . . . . . . . . . . . . . 1211

PARASITOLOGY

V. D. Bystrov, A. K. Shustrov. A microcinematographic study of Toxoplasma gondii in a peritoneal exsudate of white mice . . . . . . . . . . . . . . 1215

CORRECTION

In the article by G. L. Gal’chenko, D. A. Gelakyan, B. I. Timofeev, and S. M. Skuratov, “Standard heats of formation of $\mathrm{ZrCl}_4$ and $\mathrm{HfCl}_4$,” published in DAN, vol. 161, no. 5, 1965, in Table 2 the accuracy of determination of the standard heat of formation for zirconium, instead of the printed $\pm 2.1$, should read $\pm 0.21$.

T-16426. Signed for printing 1/XII-1965. Print run: 4315 copies. Order no. 3101.
Paper size $70 \times 108^{1/16}$. Printed sheets 21 + 6 inserts. Paper sheets $7^{1/2}$. Publisher’s accounting sheets 21.5.
2nd Printing House of the Nauka Publishing House. Moscow, Shubinskii Lane, 10.