To the physical development of healthy infants in Kazan

Considering it necessary to ascertain hitherto unknown norms, taking into account the influence of national, social and geographical factors, for the city of Kazan, we decided to collect data on the weight and height of Kazan's infants. Until now we have had no such material at our disposal, and only now, thanks to the development of consultations for children, are we able to obtain these data.