No. 2, March-April, 1961. “Sozansky, A. M.: The Features Peculiar to the Biochemical Composition of the Amniotic Fluid in Late Toxemia of Pregnancy, p. 27. Sozausky: Features Peculiar to the Biochemical Composition of the Amniotic Fluid in Late Toxemia of Pregnancy, p. 27. In late toxemia of pregnancy certain biochemical changes take place in the blood, like hypoproteinemia, hyperchloremia, and increased residual nitrogen. It was also shown in late toxemia that definite morphologic, histochemical, and biochemical changes take place in the placenta and amnion, the organs participating in producing the amniotic fluid. The above led the author to believe that changes in the content of the amniotic fluid should also take place. Investigations were made in 32 women suffering of late toxemia of pregnancy and 98 women in the second half of pregnancy without this pathology, and the conclusions are as follows: In late toxemia the content of chlorides, urea, and residual nitrogen in the blood serum of the mother, the fetus, and in the amniotic fluid is increased. The albumin in the amniotic fluid is also increased despite the hypoproteinemia in mother and fetus. The amount of sugar in the amniotic fluid in late toxemia is slightly decreased, and in the blood of the mother and fetus it is increased. Jacob Solome