S. B. Ratner. Activation energy for the mechanical failure of polymers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1297

N. P. Sazhin, N. S. Vorobieva, G. I. Veselaia, G. N. Ronami, S. M. Kuznetsova. Diffusion growth kinetics of the V$_3$Ga phase in the V—Ga system . . . . . . . . . . . . . . . . . 1301

GEOPHYSICS

V. N. Ivanov, A. S. Minin, V. T. Paka. The structure of the temperature field at the ocean surface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1304

CRYSTALLOGRAPHY

L. A. Borovinskii, A. N. Zindergosen. A contribution to the theory of crystal face growth according to polynuclear mechanism . . . . . . . . . . . . . . . . . . . . . . 1308

M. I. Karklina, Iu. P. Maslakovets. On diamond etching . . . . . . . . . . . . . . . . . . . . 1311

P. V. Klevtsov, N. A. Novgorodtseva, L. Iu. Kharchenko. Hydrothermal synthesis of Li$_2$Fe(WO$_4$)$_2$ and Li$_2$WO$_4$ tungstates and their thermal and X-ray study . . . . . 1313

CORRECTION

In my article (Academician of the Academy of Sciences of the Belorussian SSR F. I. Fedorov, “First-order equations for the gravitational field”), published in Doklady Akademii Nauk, vol. 179, no. 4, 1968, on p. 805,

Printed

\[ \Lambda^{(2)}= \begin{pmatrix} 0 & \Lambda_{R\Gamma} & 0 & 0 & 0\\ 0 & 0 & 0 & 0 & \Lambda_{Tg}^{T}\\ 0 & 0 & 0 & 0 & 0\\ 0 & 0 & 0 & 0 & 0\\ 0 & 0 & 0 & 0 & 0 \end{pmatrix} \]

Should be

\[ \Lambda^{(2)}= \begin{pmatrix} 0 & 0 & 0 & 0 & 0\\ 0 & 0 & 0 & 0 & \Lambda_{Tg}^{T}\\ 0 & 0 & 0 & 0 & 0\\ 0 & 0 & 0 & 0 & 0\\ 0 & \Lambda_{g\Gamma}^{T} & 0 & 0 & 0 \end{pmatrix} \]

All the results and conclusions of the work remain valid.

F. I. Fedorov

Submitted for typesetting 3/X-1968.     T. 13690     Signed for printing 19/XI-1968.     Print run 1490 copies.
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