174 LECTURE VII. 



Tlie skull is usually elongated, narrow at the forehead, the 

 central line of the vertex rather depressed, the parietal sur- 

 faces flattened, the greatest breadth being in the posterior 

 third. The Negro skull is the purest type of the long skull 

 vsrith receding forehead. On this small and narrow receding 

 frontal bone the superciliary arches are moderate, the frontal 

 eminences little marked, the nasal process broad, correspond- 

 ing with the broad flat nose. The temporal fossae are deep in 

 front, but flat and lengthened backwards. On looking at the 



Fig. 62. Skull of tlie Negro, top view. 



skull from above, it seems as if it had been compressed behind 

 the orbits. The parietal bones are proportionately much larger 

 than the frontal bone and the occipital squama, which are 

 usually small and short. The sutures are usually fine but 

 small, the Wormian bones, which in the European are fre- 

 quently found in the lambdoid suture, are rare exceptions in the 

 Negro. The base of the cranium is long, the occipital foramen 

 rather long than broad and situated behind the centre of the 

 line drawn from the alveolar margin of the upper jaw to the 



