51 



but in the stead are to be detected only one or two 

 broad grooves, which extend the entire length of the 

 crown. Figure 1, at page 48, indicates the shape 

 and direction of the grooves upon the surface of 

 the permanent tooth, though probably a better idea 

 of them is to be derived from an inspection of 

 the coloured engravings, in which they are more 

 prominently exhibited. By means of such guides, 

 the opinion is rendered positive, and the inspection 

 of the table is hardly needed to confirm it ; but the 

 table affords corroborative evidence, which may be of 

 service. The table is broader, and the infundibulum 

 is deeper. In this latter cavity, food accumulates in 

 the permanent, but rarely in the temporary incisor. 

 The gum may so contract as to give to the tooth some 

 appearance of possessing a neck, but in reality no 

 such part is developed in the horse incisors, as will 

 be seen by referring to the previous cut, which may, 

 with profit, be compared with the coloured engravings, 

 which depict these members as they are exhibited in 

 the mouth of the livins: animal. 



to 



27. The temporary cannot he well distinguished 

 from the permanent molars, while the horse is alive. 



E 2 



