GROWTH OF THE FETAL CENTRAL NERVOUS SYSTEM 471 
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Fig. 30 A series of curves illustrating the growth in the volumes of the brain, 
brain parts, and spinal cord in percent of the respective new-born volumetric 
determinations. Abscissa: total body length in em. Ordinate: volumes eal- 
culated in per cents of the respective new-born volumetric determinations. 
(Data from the formulae in table 43.) I, volume of the central nervous system. 
II, encephalon volume. III, encephalon weight by cases from the literature. 
IV, right hemisphere volume. V, left hemisphere volume. VI, both hemi- 
sphere volumes. VII, cerebellum volume. VIII, pons and medulla volume. 
IX, midbrain volume. X, spinal-cord volume. 
