ZOOLOOT. 
Kocky Mountains and the Cascade Eange in Oregon and 
Washington Territory, and an individual has within a few 
years been shot on Mount Shasta, California. 
Passing by the gazelles and true antelopes, we come to 
another characteristic American animal, the musk-sheep 
{Ovibos moschatus, Fig. 318), now confined to the arctic 
regions of America, though in post-glacial times this, or a 
very closely allied species, existed as far south as Ohio, and 
in Europe lived as far south as England, France, and 
Germany. 
We now come to the bison and ox. The American bison 
{Biso7i Arnericanus; see Frontispiece) formerly ranged from 
Virginia and Lake Champlain to Florida, and westward 
from the northern limit of trees to the Rocky Mountains 
and eastern Mexico. It is now in danger of extermination, 
being mainly restricted to a few herds on the plains. It is 
closely allied to the European bison {Bison Europmis), the 
^^auroch," now preserved in the forests of Bialowicza, and 
living wild in Caucasus. Bos primigennis, which in the 
time of Caesar lived in Germany and England, bearing the 
name " urus," is the " ur" of the Niebelungen song. From 
it has descended the half-wild cattle in certain English 
parks, also .certain large domestic races, such as the Hol- 
stein and Friesland breeds. From another fossil species 
{Bos longifrons) arose the so-called brown cattle of Switzer- 
land, and the " runts" of the Scottish Highlands. Still 
other domestic races are traced back to another fossil 
quaternary species, Bos frontosits Nilsson. Our present 
races of domestic cattle, however, do not represent a genu- 
ine species, but a number of races which have descended 
from several fossil species; the name Bos taurus (Fig. 319) 
is simply, then, a conventional name. The bison is known 
to breed with cattle in the Western States, though whether 
the hybrids thus produced are fertile or not is unknown. 
The ox is succeeded by the giraffe (Fig. 320), with its 
long neck, which makes it the tallest of all quadrupeds. 
The last family of Ungulates, the CamelidcB, comprises 
