Corrections

In my article (N. A. Kosareva, “On a disturbance of carbohydrate metabolism in carp during invasions by Ligula and Digramma”), published in DAN, vol. 139, no. 2, 1961, the caption to Fig. 1, instead of 0.1; 0.2; 0.3; 0.4; 0.05, should read: 0.4; 0.3; 0.2; 0.1; 0.05.

N. A. Kosareva

In the article by B. N. Stepanenko and O. G. Serdyuk, “Study of the kinetics of acid hydrolysis of certain phenyl- and chlorophenyl glycosides,” published in DAN, vol. 139, no. 5, 1961, on p. 1133, in Table 3, column 3, fourth line from the bottom, instead of the printed $(4.51 \pm 0.070)\cdot 10^{-3}$, one should read $(4.51 \pm 0.070)\cdot 10^{-2}$.

In my article (M. M. Glukhov, “On a structure-theoretic theorem of Grushko theorem type”), published in DAN, vol. 138, no. 5, 1961, in the proof of the theorem on the minimum number of generators of a structure decomposed into a free product of substructures, the fact of the existence, for each element $u$ of the substructures, of such elements $v_1$ and $v_2$ that $v_1$ covers $u$, and $u$ covers $v_2$, is used without justification. Therefore the theorem may be considered proved only for the case when the free factors of the structure do indeed possess the indicated property.

M. M. Glukhov