Abstract
All investigators of the ponderal growth of the human cerebellum in early life have been impressed by the rapid rate of increment of this part of the brain in the first year. This has lead certain students of human growth to conclude that the rapid growth of the cerebellum in infancy is correlated with the marked development of muscular co-ordination and activity in this period.
The following figures represent an attempt to test the truth of this concept. They consist of the results derived from the computations of the growth in volume of the cerebellum in the fetal period and of weight in the period of infancy. These computations are based upon the following empirical formulae:
1. For the relation between the cerebellum volume and body-length in the fetal period:
Volume of the cerebellum (cc.) = 0.01 [(0.095 crown heel length in cm.)4.9 + 20.0], as developed by Dunn. 1
2. For the relation between body-length and age in the fetal period:
Age om fetal months = 2.3+ 2.5 (body-length in cm.)/28 + (Body-length in cm.) 2 /784
as developed by Seammon and Calkins. 2
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