5i6 



CHORD ATA. 



condition of a simple jointed lever. Thus in each case the 

 ulna and fibula tend to disappear, their remains or vestiges 

 being seen along the border of the radius and tibia respec- 

 tively. The carpal bones are reduced to six in each case, 

 and the tarsals to five or six in the horse and to four in 

 the ox. In addition, the two rows are firmly interlocked 



Fig- 354-— The Right Manus Fig. 355.— The Right Man us 

 OF A Horse. {Ad nat.) of an Ox x X- {Ad nat.) 



Anterior View X \. Cuneiform. lAinare. 



Cuneiform. Lunare. 



Pisiform. 

 Unciform. "%; 



Os Magnum 



Third 

 Metacarpal. 



Pisiform. 

 Scaphoid. 



Trapezoid. 



Unciform. 



Metacarpal 5. 



Cannon-bone. 



Phalanx i. 



Phalanx 2. 



Phalanx of 

 Digit 4. 

 Phalanx 3. 



Scaphoid. 



Magnum. 



and lie alternately with each other {diplarthrous) to prevent 

 all lateral twisting. The mode of locomotion is digitigrade, 

 the toes alone touching the ground, and the metacarpals and 

 metatarsals are reduced in number and elongated. The 

 terminal phalanx or phalanges bear horny hoofs. 



With all these general resemblances we can note such 

 important differences that it is an easy matter to distinguish 



