MANDRILL AND CELEBESIAN APE 
being guarded by sentinels which are posted round its 
retreats. The voice of the baboon, like the voices of 
other creatures, has been variously put into descriptive 
language. An eminent naturalist, clearly with an 
anti-Teutonic bias, compared it to the German word 
“Hoch.” Various human actions have been ascribed 
to baboons. It seems probable that they were the 
origin of the story of the gorillas of Hanno, who referred 
to them as stone-throwing and living in throngs. When 
annoyed, or in an offensive mood, this baboon will open 
its mouth and as it were yawn at a neighbouring 
baboon ; it is suggested that this yawn is not so much 
ennui as a desire to prove to the other the length and 
sharpness of its canines. When still more angry the 
ape will smite the ground with its hand like an argu- 
mentative man with his perceptions and feelings 
heightened by alcohol. 
The sociable though ferocious and omnivorous 
mandrill, with its blue-ridged nose, is another member 
of the genus often represented at the Zoo. The most 
aberrant baboon is the Celebesian Cynopithecus niger, 
which is the only Eastern baboon ; it is black in hue, 
smallish in size (as compared with other baboons) and 
milder in disposition than are the large dog-faced apes 
of Africa. 
THE GIBRALTAR APE 
This ape, also known as the Barbary ape, Macacus 
imuus, is the only monkey that occurs now in Europe ; 
and, as is well known, it is confined to the rock of 
Gibraltar, which it haunts in very modest numbers. 
At one time so unfavourable were natural circumstances, 
or so inveterate the dislike of the inhabitants, that the 
~ numbers sank to so low an ebb as three individuals. 
But in 1893 the Governor of Gibraltar ascertained, and 
Z.G. 33 D 
