Biometric analysis of splanchnic and somatic weight in infancy.

During 712 consecutive autopsies on liveborn infants, body weight and the weight of single organs were systematically recorded. These data have provided the material for a statistical investigation. Tables and graphs have been prepared to allow a statistical estimate of the normal value of the weight of organs in the first year of life, as a function of body weight and/or the subject's age. It has been shown that in this period, the weight of an organ varies as a linear function of these two independent variables, whose action is sometimes synergic and, more rarely, in conflict in determing the weight of the organ.