GENETICS

D. K. Beliaev, V. A. Ratner. An analysis of genetic and phenotypic correlations in connection with certain problems of selection and evolution . . . . . 699

N. P. Dubinin, L. V. Cherejanova. Antimutagenic and mutagenic effect of streptomycin . . . . . 703

BIOPHYSICS

Z. J. Graevskii, M. M. Konstantinova. The radio-protective effect of aminoethyliso-thiuronium Br·HBr as independent the «oxygen effect» . . . . . 705

B. N. Tarusov, Iu. P. Kozlov. Polymer grafts on radiated wheat seeds . . . . . 709

V. N. Shredel. The effect of ionizing radiation on the nucleic exchange in sex-cells of males, in connection with the development of either male or female individuals among their progeny . . . . . 713

BIOCHEMISTRY

G. P. Serenkov, E. Preüsser. On caffeine biosynthesis in the leaves of the tea plant . . . . . 716

ZOOLOGY

M. I. Sirotina. Hematological control involved in the development of a microbiological method for exterminating the Colorado beetle . . . . . 720

PHYSIOLOGY

M. M. Gromakovskaia. The role of serotonin in the action of the central nervous system on the working ability of the neuromuscular apparatus . . . . . 724

S. K. Karapetian, N. G. Mikhaelian. On the plasticity of conductive paths of the spinal cord in birds as related to the nervous control of the reproductive function . . . . . 728

Kh. S. Koshtoiantz, N. A. Smirnova. The effect produced by ribonucleic acid on direct and indirect excitability of a neuro-muscular frog preparation . . . . . 731

PARASITOLOGY

L. G. Tatarinova, N. P. Belikova. Transmission of tick encephalitis virus by Haemaphysalis neumanni D. in experiment . . . . . 734

CORRECTIONS

In my article (V. P. Gromyko, “On a certain criterion for the speciality of \(\pi d\)-groups”), published in DAN, vol. 138, No. 2, 1961, Theorem 3 should read:

Theorem 3. Every \(\pi d\)-group \(G\) of \(\pi\)-type 3, for which \(m \ne p\) (\(p\) is a prime number), is \(\pi\)-solvable.

V. P. Gromyko

In my article (S. I. Pokhozhaev, “On a boundary-value problem for the equation \(\Delta u = u^2\)”), published in DAN, vol. 138, No. 2, 1961, p. 305, line 19 in the right-hand side of the inequality for \(\mu\), instead of

\[ \frac{(\sqrt{2c})^{3/s}}{3} \]

there should be

\[ \sqrt{2}\,c. \]

S. I. Pokhozhaev

T—11035. Signed for printing 18/IX-61. Print run 5425 copies. Order 2142.
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