[Application of terms of probability theory in embryology and teratology]

The aim of the paper was to show that accurate morphological statements can be made with the help of simple concepts of the theory of probability. Binomial distribution was used to find out whether the number of male and female births in large families was random or whether a particular disposition to boys/girls was to be assumed. It was found that the relation was random as a rule. A second question was that of the connection between a number of simultaneous variations and deformities. After the injection of trypan blue, combined deformities were studies in rats and found to be independent of each other, i.e. all had been directly caused by trypan blue.