VETERINARY DENTAL SURGERY- 41 



or lobe, which fits in the notch between the lobes of 

 the opposite side. The temporary incisors and 

 canines all make their appearance at from two to six 

 weeks. 



There are four temporary molars on each side in 

 the lower jaw, and three on each side in the upper 

 jaw. They are cut at about the same time that the 

 incisors and canines make their appearance. The 

 first temporary molar is the smallest and they grad- 

 ually increase in size as they proceed backwards. 



The replacement of the temporary or deciduous 

 molars takes place in a manner similar to that of the 

 horse. The first temporary molars are replaced by 

 permanent ones at five to six months; the second and 

 third at about six months, and the fourth (lower) a 

 few days later. 



The fourth upper molars, and the fifth lower are 

 cut as permanent teeth at four to five months; the 

 fifth upper and the sixth lower as permanent at five 

 to six months; and the sixth upper and seventh lower, 

 as permanent, at five and one-half to six and one-half 

 months. The seventh molar (situated in the lower 

 jaw), is sometimes cut much later and occasionally 

 absent altogether. 



DENTITION OF THE PIG. 



Occasion seldom demands that an operation be 

 performed on the teeth of the pig. Hence, I pro- 

 pose merely to make an allusion to the form of denti- 



