THE MOST PKIMITIVE ANTIIKOPOIO. 



White-handed Gibbon ( Ilylohales lar). The gibbon, Ur. Smith says, "is a true, if very prirn^ 

 tive anthropoid ape, nearly related to the common ancestor of man the gorilla and the 

 chimpanzee." The earliest gibbons were able to walk upright, but then- lirains were not 

 sufficiently developed to enable them to make any use of this adaptation, and it is only the 

 ancestral line of man tliat finally took advantage of it, with the freedom which it gave tor 

 the use of the hands. Even todav the han.ls of the white man are more prinvtive in their 

 characteristics than those of the anthropoid apes, or even than those ot the negro— an 

 indication, the writer jioints out, that he was not obliged to specialize them any turthcr, 

 after this early TH-riod, but made his evolutionary progress along other lines, principally 

 relating to mental accomplishments. Photographed by EUvm R. Sanborn ot the New 'i ork 

 Zoolog'cal Society. (Frcjntispiece.) 



