VETERINARY DENTAL SURGERT. 39 



The first molar is replaced by a permanent one at 

 one and one-half to two years ; the second molar at 

 two and one-half to three years; and the third at three 

 and one-half years. The fourth molar is cut as a 

 permanent one at three to nine months. The fifth 

 molar is cut as a permanent one at two to two and 

 one-half years. The sixth molar at from three and 

 one-half to four and one-half years. 



The central pair of incisors are the widest and 

 largest; they gradually diminish in both length and 

 width toward the corners, which are the smallest. 



The temporary dentition of 

 the sheep and goat is similar to 

 that of the ox ; they present the 

 same dental formula, but differ 

 in that the incisors present their 



FIG. IO. 



INCISOR TEETH OF free ends (table surface), to the 

 A SHEEP Two YEARS 

 OLD cartilaginous pad above, while 



in the ox the posterior side of 



incisors have not yet the tooth presses against the 

 been replaced.* Chan- 

 veau. pad. 



TEMPORARY DENTITION OF THE DOG. 



The temporary teeth of the dog are thirty 

 in number; twelve incisors, four canine, and 



*It is almost impossible to give a correct dental formulae of cattle 

 owing to the various modes of treatment to which they are subjected. 

 Some are so fed and housed that they mature early, while others do not 

 get their growth until a much later period. The tendency to early maturity 

 which is so highly developed in the beef producing breeds, is accompanied 

 with a change in the period of dentition. 



