1051 
moreover impossible to assume this on account of the said early 
differentiation of sapiens-forms, also manifest in the Wadjak Man, 
probably the oldest, certainly the most primitive of the forms of 
this type known up to now. 
If therefore the Neandertal type and the Wadjak (sapiens) type 
existed already before the Plistocene epoch as real Human beings, 
which had a common human stock, it must have been in still earlier 
times that their common ancestor sprang from a biped, though only 
Man-like transitional type, possessing a less large encephalon. 
EXPLANATION OF THE PLATES. 
PEALE +I. 
Fig. 1. Wadjak I. Norma lateralis of the skull. As horizontal the Frankfurt 
plane. Stippled outline of a typical Javanese skull. 
Fig. 2. Wadjak I. Norma frontalis of the skull. As horizontal the Frankfurt 
plane. 
Fig. 3. Wadjak I. Norma verticalis of the skull. As horizontal the Frankfurt 
plane. 
Figures 1—3 in 1/, natural size. 
PLATE II. 
Fig. 4. Wadjak II. Maxilla and mandibula. Left side. As horizontal the 
alveolar plane. 
Fig. 5. Wadjak II. Maxilla and mandibula. Facial view. As horizontal the 
alveolar plane. 
Fig. 6. Wadjak I. Maxilla from below. Alveolar plane. The crowns of the 
right p, and of the left # and #3 must lie 1 mm. more to the outside, the 
crown of the left p, 0.5 mm. in the figures 4, 5, and 6, on account of 
deformation in correspondence to twice the amounts in the original. 
Fig. 7. Wadjak II. Mandibula from above. Alveolar plane. 
Figures 4—7 in !/, natural size. 
Fig. 8. Vertical cross-sections in the symphysis line of the mandibula of 
Wadjak II (full line), Homo heidelbergensis (broken line), and an Australian 
(stippled line), by the side of it a Frenchman. The two latter according to 
BOUuLE (loc. cit., p. 88, Fig. 56). All these from plaster casts, except the Mauer- 
“jaw, which is from a figure of the original (O. SCHOETENSACK, Der Unterkiefer 
des Homo Heidelbergensis. Jena 1908, Table 8, Fig. 20 and Table 13, Fig. 48). 
Natural size. 
