488 



THE HIGHER ANTHROPOIDS 



It is fortunate, however, that at least one of this species has come under the 

 critical observation of a most astute student of animal behavior. Professor 

 RoJDcrt M. ^'erkes. In his notable contribution on "The Mental Life of 



IIG. -223A. DORSAL SURI'ACE Ol- BRAIN, ORANG-OUTANG. 



lAttiial I .CM);!!! 1)4 mm. I 



Monkeys and Apes, " Professor "\'erkes has described certain tests devised for 

 estimating tiie iiitelli<j;ence of lower animals, and ap[)lied to the partly <iro\\ n 

 orang, known as "Julius." These tests wcrt' designed upon what is known as 

 the mulli])lc choice hasis. Concerning the results ol^taiiud from the orang- 

 outang as compared with other lower primates, ^cikts sa\s that Julius, 

 after many unsuccessful ellorts to sol\c tlu- pi'oblem b\ the nu'thod ol trial 



