SIM I A SATYRUS, THE ORANG-OUTANG 487 



persevering a long time would it give uj) in disgust and set up a scream verj' 

 like that of a baby in similar cireunistanees. \\ lien handled or nursed it was 

 very cjuiet, and \\ hen laid down by itself, it would invariably er\'. It enjoyed 

 being rubbed alter its morning bath and was cjuite hap|)\ while its hair was 

 being combed and bruslu'd. b'or the lirst lew days it clung desperately by all 

 four hands to w hate\ er it could lay hold ol, and \\ allace remarks that it was 

 necessary for hnn to ext'rt spt'cial precautions to keep his beard out of the 

 way. A little hart-lip monkey of the macacus variety was subsequently 

 obtained as a com]xinion for the young orang, and it was curious to observe 

 the ditlerent actions of these two young simians, the one the offspring of a 

 great anthropoid and the other of a much lower form of jjrimate. The two 

 voung animals were of about the same age, but the orang was very like a 

 baby lying on its back cpiltc helpless, rolling lazily from side to side, stretch- 

 ing out all four hands into the air, wishing to grasp something but hardly 

 able to guide its fingers to an\- object. \\ hen dissatisfied, it opened w ide its 

 almost toothless mouth, exjjrcssing its wants by a most infantile scream. 

 The little monkey, on the other hand, was in constant motion, running and 

 jumping about wherever it pleased, examining every thing about it, taking 

 hold of objects w ith the greatest precision, balancing itself on the edge of the 

 box and searching everywhere for something to eat. There could hardl\- be a 

 greater contrast. The orang beluned in so many ways as a human infant as 

 to gi\(.' the impression that a long ])criod of slow development was necessary 

 to it. This appeared essential in order that the j:)otential elements ol its 

 growth might attain their fullest expression by retarding the period of 

 maturity to a relati\el\ late jicriod. 



YERKES' PSYCHOLOGIC.XL STUDIES 



The orang-outang has not been so extensively subjected to exact 

 psychological study as its more capable fellow anthropoid, the chimpanzee. 



