136 



CANADIAN FARM YEAR BOOK. 



BOLOGNA BULL. 



Five Years Old. 



At the age of about four years and 

 nine months, the permanent corner 

 incisors make their appearance. When 

 the horse is full five years of age, 

 the oiuter exterior parts meet, al- 

 though almost one year of wear must 

 take place before the lateral or cor- 

 ner teeth are worn level over their 

 entire surface. The horse has now a 

 full mouth, and the central incisors 

 show two years' wear. The cups 

 show oin all, but are deepest and 

 freshest in the corner teeth. 



Six Years Old. 



At six years the cups in the central 

 incisors of the lower jaw have disap- 

 peared, or nearly so; have become 

 smaller in the intermediates, and the 

 corner teeth are worn level over their 

 entire surface, 



Seven Years Old. 



At seven years of age the cups in 

 the intermediate incisors of the lower 

 jaw have disappeared, although 

 amali dark spots may often be seen. 

 The corner teeth still retain their 

 cups, although they are rather shal- 



low. It is well to bear in mind that 

 from the time when the teeth of the 

 lower jaw are well up and in wear to 

 the time that the cups have disap- 

 peared from the lower jaw Is three 

 years. The teeth in the upper jaw 

 retain their cups for a much longer 

 time; in fact, just twice as long, dis- 

 appearing in six years after thry have 

 made their appearance. 



Eight Years Old. 



At eight years of age, the cups 

 have disappeared from the teeth of 

 the lower jaw. One must not be mis- 

 led by the slight, dark-colored in- 

 dentations that are still present, for 

 they are not deep enough to be 

 called cups. By the time the horse 

 has reached this age, the shape of the 

 teeth have undergone marked 

 changes. (Compare Fig. 9 with Fig. 

 10.) In the first :place, the teeth, 

 were thin from outside to inside, and 

 comparatively broad from right to 

 left; while, in the latter case, they 

 are much thicker from inside to out- 

 side, and have become more triangu- 

 lar in shape. If viewed from the side, 

 they will appear somewhat longer, 

 and will meet at a sharper angle 



