CLASS MAMMALS: ORDER UNGULATA. 



59 



Bony axis of Horns 



with cells, which 

 communicate through 

 ths frontal sinus with 

 the nose Horns curve 



Bony axis of Horns 



without cells or pores. 



Horns curve 



The Musk Ox, so 

 called from the 

 flavor of its flesh, 

 inhabits Arctic 

 North America.* It 

 feeds on grass and 

 lichens. The horns 

 widen at the base, 

 so as entirely to 

 cover the crown of 

 the head. 



Difference be- 

 tween Herbivora 

 and Carnivora.f 

 A distinguishing 

 feature of the Ruminants is the elevation of the heel, which 

 compels the animal to walk upon its nails (the Camelidse 

 excepted). The Garni vora bring the entire toes to the ground, 



* The Esquimaux hunters will attack this irritable animal with only a knife, and 

 turning around quicker than it can" wheel, stab it to death. 



t A comparison of Fig*. 27. 65, 77, 82, will show that the differences in the various 

 parts of the skeleton are those of relative size and adaptation rather than of number. 



Ombos moschatus, Musk Ox. 



