Morphology. 



95 



pression of impoverished nutrition during the growth 

 of the bone. 



JAVAI; LORIS. 



GAPVCHII/. 



FIG. 25. Perforation of the humerus (supra-condyloid foramen) in 

 three species of Quadrumana where it normally occurs, and in Man, where 

 it does not normally occur. Drawn from nature (A'. Coll. Surg. Mus.'). 



(n) Flattening of tibia. In some very ancient 

 human skeletons, there has also been found a lateral 

 flattening of the tibia, which rarely occurs in any ex- 

 isting human beings, but which appears to have been 

 usual among the earliest races of mankind hitherto dis- 

 covered. According to Broca, the measurements of 

 these fossil human tibiae resemble those of apes. More- 

 over, the bone is bent and strongly convex forwards, 

 while its angles are so rounded as to present the 

 nearly oval section seen in apes. It is in association 

 with these ape-like human tibiae that perforated humeri 

 of man are found in greatest abundance. 



