THE TEETH 



191 



to the four central teeth, in th# manner rejnesented in the cut* 



The spaces between them will novf 



evident enousfh. 



TWELVE MONTHS. 



The -ast cut oives the curious and diminutive appearance of all 

 the incisors at fifteen months old. It would appear difficult to ob- 

 tain sufficient food to support good condition. It is somewhat so, 

 and it may be in a great measure owing to these changes in the 

 teeth, and the difficulty of grazing, that young beasts are subject to 

 so many disorders from seven or eight months and upwards, and 

 are so often out of condition. 



At fifteen months old, the corner teeth will not be more than 

 half their natural size ; the centre ones yet more diminished ; and the 

 spaces between them almost equal to tlie width of the teeth. The 

 faces of the teeth will be lengthened ; the triangular mark will di- 

 minish, principally in the central teeth ; while another more or less 

 deeply shaded, Avill begin to appear around the original maik. 



All this while the second set of teeth, the permanent ones, have 

 been growing in their sockets, and approaching towards their gums. 

 The piocess of absorption commences in the whole milk tooth, and 

 as much in the crown or body of it as at its root. The process of 

 diminution now is confined to the central teeth, and they gradually 

 waste away until they are no larger than crow-quills. About the 

 end of eighteen months, or a little before, the two central milk 

 teeth are pushed out or give way, and the two C(!ntral permanent 

 teeth appear. 



The cut gives the mouth at eighteen months old, the two per- 

 manent central incisors are coming up, and the other six milk teeth 

 remain. The bone in front of the lower jaw is taken away, in order 



