PHYTOPATHOLOGY
G. D. Uspenskaia. A biochemical method for determining the degree of parasitism in strains of Verticillium dahliae Kleb . . . . . . . . . . . . . . . 1409

ZOOLOGY
L. E. Anokhina. Some aspects of the fertility of herring in the Onega bay . . . 1412
K. A. Brodskii. An attempt at a biometric analysis of morphological variation in Calanus pacificus Brodsky . . . . . . . . . . . . . . . . . . . 1416

EXPERIMENTAL MORPHOLOGY
V. V. Popov, A. V. Al’-Sakini. The importance of ganglionic cells of the retina for the development of the crystallin lens of the eye . . . . . . . . . . . 1420

PHYSIOLOGY
V. V. Artemiev. On the physical-chemical mechanisms responsible for the genesis of rhythmic oscillations of electric potential in nervous structures (reactions of α-rhythm-type) . . . . . . . . . . . . . . . . . 1424
E. N. Pavlovskii, F. F. Talyzin, I. A. Valtzeva, A. A. Pchelkina, V. E. Sidorov. The durability of thitrinin activity of liquid or exsiccated «anti-giurza» serum . . . . . . . . . . . . . . . . . . . . . . . 1428
Vikt. K. Fedorov. Some data obtained in studying the typological properties of higher nervous activity in animals . . . . . . . . . . . . . . . . . 1432

CORRECTION

In my article (A. D. Talantsev, “On the algebra of potential-impulse objects”), published in DAN, vol. 139, No. 6, 1961, an inaccuracy was made. The beginning of page 1335 should read: … Further, let us agree that

\[ sZ = Z \cdot pZ,\quad Z^{11}=Z,\quad Z^{00}=\overline{Z},\quad Z^{10}=iZ,\quad Z^{01}=\bar{i}Z,\quad Z^{\Delta 1}=dZ,\quad Z^{\Delta 0}=d\overline{Z}. \]

The following relation holds:

\[ \begin{aligned} \Phi (Z_1,\ldots,Z_n) &={} \\ &= p\left(\sum_{1_1} Z_1^{\alpha_1}\cdots Z_n^{\alpha_n}\right) \cdot \sum_{0_1} s\left( Z_{i_1}^{\alpha_{i_1}}\cdots Z_{i_{k-1}}^{\alpha_{i_{k-1}}} \cdot Z_{i_k}^{\beta_{i_k}} \cdots Z_{i_n}^{\beta_{i_n}} \vee \right. \\ &\qquad\left. \vee \sum_{1_0} s\left( Z_{i_1}^{\alpha_{i_1}}\cdots Z_{i_{k-1}}^{\alpha_{i_{k-1}}} \right) \cdot Z_{i_k}^{\beta_{i_k}} \cdots Z_{i_n}^{\delta_{i_n}} \right). \end{aligned} \tag{1} \]

A. D. Talantsev

T-01194 Signed for printing 20/II-1962. Print run 5450 copies. Order 2720
Paper format 70×108¹/₁₆. Printed sheets 20.2 + 2 inserts. Paper sheets 7⅜. Publisher’s sheets 21.8
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