38 HOOFED ANIMALS 



was very different. From the place of its nativity — let us 

 say the Altai Mountains — there stretches northeastward 

 through Siberia and Kamchatka, Alaska, and thence down to 

 British Columbia and northern Mexico a practically unbroken 

 chain of mountain sheep 7,500 miles long. From northern 

 India to northern Mexico the species stand in the following 

 order: Burrhel and Urial, Argali and Polo's Sheep, Siar Sheep, 

 Kamchatkan Sheep, White Sheep, Black Sheep, Big-Horn and 

 Mexican Sheep. 



Measurements in Inches of Extra Large Mountain Sheep Horns 



in American Collections 



BASAL LENGTH 



CIRCCM- ON Ol'TEK 



LOCALITY FERENCE CURVE SPREAD 



Siberian Argali. Ovis amnion Central Asia 19! i 59y s 40 



Marco Polo's 1 ,-, . ,. ^ , . . ,„,,, __„, 



o Ovis poh Central Asia 15% 60% 50 



Siar Sheep Ovis siarensis. . . .Central Asia \5}/ 2 47% S0 l i 



Karelin Sheep .. Ovis Jcarelini .... Chinese Turkestan 13J^ 443 2 36 



Pinacate Sheep. . Ovis canadensis \ xr'w M '' I ^ ~§Vz 19% 



a \ Ovis cremnobates . Lower California . . 16% 42U 25% 



nia Sheep. . . J /4 Xi /4 



Big-Horn Ovis canadensis. .S. W. Alberta 17% 40 25 



Mexican Sheep. . Ovis mexicanus . .Chihuahua, Mexico 16>2 35 18% 



Black Sheep .... Ovis stonei British Columbia . . 14 44 25 



White Sheep Ovis dalli N. W. Yukon Terr 14% 44% 34 1^ 



Kenai White 1 Ovis dalli 1 Kenai Peninsula, ) iq Q „ 



Sheep J kenaiensis. . . J Alaska J 



It requires no stretch of the imagination to behold Bering 

 Strait choked with the great polar ice-pack, and hardy, 

 strong-limbed bears, wolves, mountain sheep and reindeer 

 crossing over the sixty miles that now separate Asia from 

 Alaska, and spreading in all directions over North America. 



