MAMMALS OF POLAR REGIONS 49 
On the south side of the hall are displayed the cloven-hoofed animals 
of North America. These include sheep, musk ox, caribou, 
Antelope 
collared peccary and various species of deer. At the extreme 
Group " 
end of the hall is a group of antelope showing the manner in 
which they wander across the plains. This animal possesses the power to 
raise or lower at will the long hairs on the rump in such a manner that the 
light is reflected as from a mirror, and by this flashing the animal is said to 
signal approaching danger. On the north side of the hall are shown the 
rodents and carnivores. [See Guide Leaflet No. 5.| 
SOUTHEAST PAVILION 
1. MAMMALS OF THE POLAR REGION 
2. REPTILES AND AMPHIBIANS 
Proceeding eastward beyond the antelope group we enter the Southeast 
Pavilion containing the boreal 
animals of North 
Fur Seal 
America and at 
Group 
the extreme east 
of the hall the exhibit of reptiles 
and amphibians. At the en- 
trance is shown a family of fur 
seals as it appears in one of the 
seal rookeries in the  Pribilof 
Islands. During the breeding 
season the fur seals, from which 
is obtained the sealskin of commerce, congregate in their island rookeries in 
great numbers and have been so hunted by man that they are threatened 
with extinction. 

A YOUNG SEAL OF THF FUR SEAL GROUP 
Grant’s Grant’s caribou inhabit the barren ground of the extreme 
Caribou western end of the Alaskan peninsula. The type specimen of 
Group this species is in the Museum. 
The mountain sheep inhabit the more inaccessible mountain regions 
of the West from the northern part of Mexico to the shores 
of the Arctic ocean. It is probable that they originated in 
the mountains of Central Asia and spread through Siberia 
into the American continent. The geographic variation of the mountain 
sheep of North America is shown on the section of a globe near the group. 
[See Guide Leaflet No. 5.] 
Mountain 
Sheep Group 
