480 HALBERT L. DUNN 
Fig. 38 A series of midsagittal tracings (of the specimens shown in figure 35) 
drawn to a standard fronto-occipital length. A, ca. 4 em. C H length. B, ea. 
7.5 em. C H length. C, ca. 12.5 em. C H length. D, ca. 17.5 em. C H length. 
