THE LIVING WORLD. 
605 
deepens into chestnut along the back. It is frequently spoken of by the great 
Bruce in his accounts of the Abyssinian country. The madoqua is a mountaineer 
and is not gregarious. 
The Diver Antelope, Duyker, Duykerbok, Impoon ( Cephalophus mergens ), 
takes its name from its _ 
habit of diving into the 
brush, and is a solitary little an¬ 
telope of southern Africa,whose 
ingenious devices for protect¬ 
ing himself are alike numerous 
and curious. When approached 
it will leap over bushes and 
again dive through them, mak¬ 
ing so many sharp turns as to 
make it almost impossible for 
man or dog to follow it. It 
will then quietly crawl along 
under the bushes for quite a 
distance, when it will jump to 
its feet and bound away. Even 
when a shot is had the sports¬ 
men will often lose the game ARABIAN gazeli.es opposing a leopard. 
because of its power of carry¬ 
ing without great inconvenience quite a heavy load of shot. It belongs to 
southern Africa. It is small, gray, and has straight, sharp horns. It is very 
tenacious of life and will frequently turn to 
bay and charge the hunter. 
The Four-horned Antelope, or 
Chouka ( Tetracerus quadricornus) , is an 
Indian species. The front horns, situated 
just above the eyes, are short, the back 
pair longer; the female wears no horns. 
The four-horned antelope is only about a 
foot and three-quarters in height, and is 
bay above and gray beneath. 
The Chamois (. Rupicapra) is a wary, 
mountain antelope, gregarious in its habits. 
It always keeps a sentinel upon guard, and 
when danger is announced the whole herd 
gives one look of inspection before taking 
to flight. The chamois can be domesticated 
and converted into a household pet. It is 
brownish-yellow, with a black' streak along 
the back; in winter the color becomes 
blackish-brown. The face and throat are 
chamois. a yellowish-white, varied by a dark bank 
forming rings about the eyes, and extending 
thence to the corners of the mouth. The horns, doubtless familiar as articles 
of ornament, are jet-black, sharp-tipped and highly polished; they are about 
