402 



DIGESTIVE SYSTEM OF THE HORSE 



The first five have two roots, while the sixth commonly has three. The width of the 

 lower molars is a little more than half that of the upper. 



The structtire is quite complex. Two infundibula run vertically through the 



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entire length of the crown; these become filled with cement. In the upper teeth 

 there are five main divisions of the pulp-cavity and five enamel folds, four of which 

 are arranged symmetrically, while the fifth is an outgrowth from the antero-medial 

 fold. In the lower teeth the infundibula are open along the lingual surface until 



