VARIOUS SPECIES OF GAZELLES. 169 



the Deserts; he differs from the gazelle in his arched horns, but his 

 skin is nearly the same. Although the gazelles are generally con- 

 sidered extremely timid animals, which, moreover, their weakness 

 would fully justify, they display on emergency a surprising courage. 

 When they cannot escape from danger through agility, they bravely 

 confront the enemy which attacks them. Menaced by a panther 



1. Gazelle. 



3. Gazelle (of Scemmering,. 



2. Antelope (Oryx-leucoryx}. 

 4. Nanguer. 



or a leopard, they form themselves into a circle, which, bristling 

 everywhere with keen-pointed horns, compels the antagonist to 

 retreat. 



In the deserts of Africa and Arabia the traveller frequently meets 

 with small rodents, which excavate their burrows in the sandy soil, 



and only issue from them at night in quest of food. These are the 



11 a 



