GROWTH OF THE FETAL CENTRAL NERVOUS SYSTEM 439 
The percentage increment of the vermis cerebelli length when 
calculated for fetal months (fig. 27, curve VIII) is approximately 
85 per cent in the fifth month, descending at first swiftly and then 
more slowly to about 12.5 per cent in the tenth month. 
oy J [ 
cm e 
3.0 
e 2 
ie e ee 
ee ee e | 
2.0 . | 
2. eo Ue 
ry e e 1 
oe ° 
eferece 
se) © efse 4 
e eo eo ¢« 
10 comgna « 
ee e se « 
e . o 
5 e om ane ae 
e eS ee 
fo) | | | 
0 5 10 15 £0 £5 30 35 = 40 AD 50 55cm 
Fig. 12 Field graph and curve of the growth of the cerebellum in fetal life 
as shown by the vermis cerebelli length. Abscissa: total body length in em. 
Ordinate: vermis cerebelli length in em. Individual cases indicated by solid 
dots. Curvedrawn tothe formula: Y = 0.01 (X!.41+ 0.15). (Data from tables 
19 and 20.) 
