26 



Deiitition as indicative of the Age 



gums and in the general aspect of the mouth, which must not 

 be lost sight of when an accurate opinion has to be formed. 



In the eigJit-i/ear-old mouth the form of the tables of the 

 incisors and the shape of the central enamel in the central in- 

 cisor afford tolerably satisfactory indications of the age. The 

 central teeth are more distinctly triangular than they were at 

 seven years ; tlie central enamel in these teeth is also triangular 

 in figure. All the tables of the incisors are worn as level as the 



Pig. 17.- 



-Incisors of Horse {"Peej^-d'-day Boy ") at eight years. 



different degrees of density of the various structures will permit. 

 The cavities are either very shallow, or quite obliterated by being 

 filled up with one of the tooth tissues, although the central 

 enamel in each tooth is perfectly well defined. The gum of the 

 corner incisors at eight years has lost its circular form and be- 

 come square. The tusks are more blunted at the tops than in 

 the seven-year-old mouth. 



In the above illustration (Fig. 17) the appearance of the 

 eight-year-old mouth is shown. The drawing was copied from 



