ERRATA

In the article by S. P. Zhdanov, “Adsorption of water on quartz crushed in vacuum,” published in DAN, vol. 115, No. 5, 1957, in Fig. 1, on the ordinate axis, instead of the numbers 5, 10, there should be 10, 20.

In the article by S. I. Alikhanyan and F. S. Klepikova, “A study of the effect of X-rays on the variability of Actinomyces subtropicus (producer of albomycin),” published in DAN, vol. 115, No. 4, 1957, the following corrections must be made:

1. Interchange the drawings of Fig. 1 and Fig. 3.
2. The caption under Fig. 1 should read: Dependence of the frequency of morphological mutations and survival rate on the irradiation dose.
3. The caption under Fig. 3 should read: Variability in the accumulation of minus variants and in maximum activity as a function of the irradiation dose.