HEAD. 13 



ends opposite the nostrils at the angle (C) formed by the 

 line of the face and the line of the muzzle. 



The muzzle is the lower end of the head, and includes 

 the nostrils, upper (D) and lower lip {E), and the bones 

 and teeth covered by them. 



The bars of the mouth are the bare portions of the 

 gums of the lower jaw which lie on each side, between 

 the back teeth and the tushes, or the place usually occupied 

 by the tushes. 



Fig. 14. — External Parts of Horse. 



The chin-groove (F) is just under the bars of the mouth. 

 It is the smooth and rounded under part of the lower 

 jaw, in which the curb-chain should rest when a curb 

 bit is used. 



The angles of the lower jaw (G) are the bony angles 

 between which the upper end of the wind-pipe lies. 



The branches of the lower jaw run from the chin-groove 

 to the angles of the lower jaw. 



The occipital crest is the bony prominence which con- 

 stitutes the top of the head, and which more or less rises 



