82 ß'- J- Andersqn. 



articular surface looks downwards aad backwards. Le Double gives 

 the frequency in one Negro group as 3 in 92. In Peruvians as 2 in 78 

 (after Bartels). 14 times in 163 Aïnos. 



(2.) A Papuan (Somewhat rubbed). Antero-posterior measurement 

 12.5 cms. Angle to Angle measurement 10.5 cms. Basilar 2.9 cms. 

 Foramen 3.4 cms antero-posterior and Transverse 3 cms. From 

 foramen to Protuberance 5 cms. Protuberance to Summit 5.5 cms. 

 The bone is prominent behind the external angles on each side. The 

 occipital protuberance (ext.) seems flattened (by rubbing?). The 

 Condyles are 2.5 cms long and 1.2 cms broad. The Condyles are 

 1.4 cms apart in front and 3.2 cms apart behind. The retromastoid 

 process (Processus retromastoideus) of Waldeyer is well marked. This 

 process is said to be well marked in several South Sea Island groups, 



(3.) A Papuan. Antero-posterior diameter 11.5 cms, transverse 

 9.8 cms. Basilar 2.3 cms. Antero-posterior foramen 3.1 cms. Trans- 

 verse foramen 3.1 cms. The foramen magnum seems rubbed. Fora- 

 men magnum to ext. Occipital Protuberance = 5.7 cm. Protuberance 

 to Summit 6 cms. Distance between Condyles in front 1.8 cms, behind 

 3.0 cms. 



Length of Condyle 2.2 cms, breadth 1.3 cms. Impulses from the 

 Maxilla pass through the basilar in part and are distributed, in part, 

 through the external parts of the occipital, and temporal. Impulses 

 from the spinal Column reach the basilar process through the ex- 

 occipitals. 



