94 NATURAL HISTORY. 



161. The Musk Ox, Fig. 79, is a native of the cold re 

 gions of North America. It somewhat resembles ths 



Fig. 79. Musk Ox. 



Yak. It is covered with very long hair which almost 

 reaches the ground. It appears in small herds, number- 

 ing, perhaps, twenty or thirty. Both this animal and the 

 Yak are rather small, but the thick hair covering them 

 makes them look quite large. 



Questions. What are the families of the order Ruminantia ? What 

 is said of the usefulness of the Ruminants to man ? State how well 

 defined this order is compared with some others. What is the struc- 

 ture of the feet of the Ruminants ? What are the structure and ar- 

 rangement of their teeth ? What is rumination ? Describe the ar- 

 rangement of the stomachs of the Ruminants. Illustrate its purpose. 

 What is there in some Monkeys analogous to the paunch of the Ru- 

 minants? In what other respects is the organization of the Rumi- 

 nants adapted to their habits ? What is said of the arrangement of 

 the eye? What influence has domestication on the bulk of the Rumi- 

 nants? What partial exceptions are there to the general timid habits 

 of this order? What distinguishes the Bovidas from the other fami- 

 lies ? What is said of the distribution of the Ox, and of its varieties ? 

 What is said of the Bos Indicus ? Where are the true Buffaloes 

 found ? How are they useful to man ? What is said of the Ameri- 

 can Bison? What of its usefulness to man? What is said of the 

 Yak ? What of the Musk Ox ? 



