32 NATURAL HISTORY. 



hirsute appendages are capable of being erected when the animal is angry. For this purpose the bulb- 

 like ends of them, which are imbedded in the skin, are covered with slips of muscular hbre from the 

 great cutaneous muscle-that by which quadrupeds are enabled to "shiver' their skms-and these 



SCENE IN THE JUNGLE. 



hair muscles are provided with an abundant supply of nerves. When the muscles contract, they make 

 the hairs " stand on end," producing a sort of magnified " goose-skin." The vibrissse are especially sen- 

 sitive, and are of great assistance to the Tiger as he makes his way through the jungle in the dark. 



The great distinctive character is, of course, the colour. Of this, and of the main points 

 of difference between the two sexes, Sir J. Fayrer writes as follows : " The colour of a full-grown 



