Abstract
In this paper, statistical investigations were made on the relations between the cause of infant death and the social, biological factors as report 1. The effect of coldness for neonatal death rate was distinguished but the coldness.
The death rate of antenatal deformity and diseases peculiar to early infancy was found to be ten times higher in case of premature infant than in case of mature infant. The neonatal death rate in case of premature delivery was thirteenth times higher than in case of mature delivery.
The frequency of antenatal defomity and diseases peculiar to early infancy was the highest in the fifth born, the highest in the mother's age of above 40 age.
