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GEOCHEMISTRY
V. I. Rekharsky, O. V. Krutetzkaia. Some data on the colouring of sulphates by ilsemanite . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 903
CYTOLOGY
L. J. Jorno, L. P. Ovchinnikova. A quantitative analysis of DNA in cells of manylayered flat epithelium in guinea pigs (A cytophotometric study) . . . 907
HYDROBIOLOGY
A. I. Ivanov. The quantitative distribution of mollusca of the genus Modiolus (M. phaseolina Phil. and M. adriatica Lam.) near the Caucasian coast of the Black Sea . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 911
Iu. I. Sorokin. Photosynthesis produce of phytoplankton in the Black Sea . . . 914
BIOPHYSICS
M. M. Kalashnikova. Certain electron microscope data on a regenerating rat liver following local X-ray treatment . . . . . . . . . . . . . . . . . . . . . 918
PLANT PHYSIOLOGY
N. P. Voskresenskaia, G. S. Grishina. On competitive relations existing between CO₂ and some other oxidizing agents in the course of photosynthesis in different regions of the spectrum . . . . . . . . . . . . . . . . . . . . . 922
ZOOLOGY
L. A. Erman. Nutrition and reproduction of Brachionus calyciflorus Pall. plankton in mass cultures . . . . . . . . . . . . . . . . . . . . . . . . . . . 926
EXPERIMENTAL MORPHOLOGY
L. V. Polezhaev, N. A. Teplitz, S. J. Tuchkova. The rôle of proteins and nucleic acids in the restoration of the regenerative capacity of extremities in axolotles, suppressed by X-rays . . . . . . . . . . . . . . . . . . . . . . . . 930
EVOLUTIONAL MORPHOLOGY
V. D. Il’ichev. A contribution to the study of the otic part of bird skull . . . . 934
PHYSIOLOGY
I. I. Grachev, A. V. Gostev. Data on reflectory influences from the mammary gland on lymph secretion in she-goats . . . . . . . . . . . . . . . . . . . . 938
EMBRYOLOGY
A. A. Neufach, I. M. Shapiro. A radiation study of the function of oocytes in the ovulation process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 942
CORRECTION
In the article by I. B. Rabinovich, V. I. Telnoi, P. N. Nikolaev and Corresponding Member of the Academy of Sciences of the USSR G. A. Razuvaev, “Thermochemistry of the Interaction of Hexaethyldistannane with Benzoyl Peroxide,” published in Doklady Akademii Nauk, vol. 138, no. 4, 1961, on p. 854, 8th line from the bottom, instead of \((\mathrm{C_2H_5})_2\mathrm{Sn}_2\) it should read: \((\mathrm{C_2H_5})_6\mathrm{Sn}_2\).
Table 2 should read:
| Substance | \(-\Delta H\), kcal/mol, according to the authors | \(-\Delta H\), kcal/mol, literature data |
|---|---|---|
| \((\mathrm{C_2H_5})_4\mathrm{Sn}\) | \(1551 \pm 3\) | \(1546\ (^{4})\) \(1523\ (^{6})\) |
| \((\mathrm{C_2H_5})_6\mathrm{Sn}_2\) | \(2379 \pm 3\) | |
| \((\mathrm{C_6H_5COO})_2\) | \(1552\ (^{3})\) | |
| \((\mathrm{C_2H_5})_3\mathrm{SnOCOC_6H_5}\) | \(1907 \pm 1\) |
T-06820 Signed for printing 26/V 1962. Print run 5500 copies. Order 523
Paper format \(70 \times 108^{1}/_{16}\). Printed sheets 21.9 + 2 inserts. Paper sheets 8.0. Publisher’s sheets 23.1
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