474 HALBERT L. DUNN 
O ! fé, 3 4 5 6 iG 8 9 1Omos. 
Fig. 33 A series of curves illustrating the growth (in linear dimensions) of the 
brain, brain parts, and spinal cord calculated in per cents of the respective new- 
born linear measurements. Abscissa: fetal months (crown-heel length reduced 
to time by Mall’s convention). Ordinates: linear dimensions calculated in 
per cents of the respective new-born measurements. (Data from the formulae 
in table 43.) I, fronto-occipital diameter. II, temporal diameter. III, ver- 
mis cerebelli length. IV, vermis cerebelli height. V, pon length. VI, collic- 
uli length. VII, frontospinal length. VIII, spinal-cord length. IX, brain- 
cord length. 
