164 STUDIES, SCIENTIFIC AND SOCIAL chap. 



houses in Sumatra, surrounded by dense forests and with 

 no European residents within many miles, a large family 

 of the monkeys here figured (Fig. 31) were in a tree close 

 to the house. They took no notice of the natives who were 

 about, but the moment I came out they showed signs of 

 alarm, stared at me for perhaps half a minute, and then 

 began to move off. The next tree happened to be a much 

 lower one, and the old monkeys at once leaped on to the 

 mass of foliage perhaps twenty or thirty feet below them. 

 The younger ones followed, but with evident hesitation, 

 and the last two did not like it at all, and ran a little to 



Fig. 31. — Semnopithecus mdaloplios. 



one side or another, looking as if equally afraid to stay or 

 go on. At length, just as the others were disappearing in 

 the deep forest, and seeing no other means of escape, they 

 took the dreadful jump, whirling about in the air and 

 disappearing with a crash in the mass of foliage, but just 

 saving themselves from coming to the ground. 



The last group of Eastern monkeys are the Macaques 

 (genus Macacus), which are more like baboons in general 

 form, and often run upon the ground. They are more 

 bold and vicious than the others. All have cheek pouches, 

 and though some have long tails in others the tail is 

 short, or reduced to a mere stump. In some few this 

 stump is so very short that there is no external tail, 



