I THE ORANG 47 



extend from the sea-shore inland, and thus ia 

 found only in the eastern half of Sumatra, where 

 alone such forests occur, though, occasionally, it 

 strays over to the western side. 



On the other hand, it is generally distributed 

 through Borneo, except in the mountains, or 

 where the population is dense. In favourable 

 places, the hunter may, by good fortune, see three 

 or four in a day. 



Except in the pairing time, the old males 

 usually live by themselves. The old females, and 

 the immature males, on the other hand, are often 

 met with in twos and threes ; and the former 

 occasionally have young with them, though the 

 pregnant females usually separate themselves, and 

 sometimes remain apart after they have given birth 

 to their offspring. The young Orangs seem to 

 remain unusually long under their mother's protec- 

 tion, probably in consequence of their slow growth. 

 While climbing, the mother always carries her 

 young against her bosom, the young holding on by 

 his mother's hair. 1 At what time of life the Orang- 

 Utan becomes capable of propagation, and how 

 long the females go with young, is unknown, bub 

 it is probable that they are not adult until they 



1 See Mr. "Wallace's account of an infant "Orang-utan," in 

 the Annals of Natural History for 1856. Mr. Wallace provided 

 his interesting charge with an artificial mother of buffalo-skin, 

 but the cheat was too successful. The infant's entire experience 

 led it to associate teats with hair, and feeling the latter, it spent 

 its existence in vain endeavours to discover the former. 



