66 



SWINE PRACTICE 



Siibmaxillary glands. — These giajitls are smaller than the parotid 

 and are of a darker color and their ducts discharge near the fraennm 

 linguae. 



HuVAiigual glands. — These glands consist of two parts on either 



Milk nipper 

 Millt middle incisor 

 Millt corner incisor 

 IMilk canine 



Pig. 12. Dentition of lower jaw of three-monttis-old pig. (Ostertag). 



side and are located near the angle of the maxilla. One portion of 

 the glands terminates in a single duct which discharges near the 

 duct of the submaxillary gland. The other portion — the true sub- 

 lingnal gland — is relatively flat and is located anterior to the former. 



Milk nipper and middle in- 

 cisor 



Milk corner incisor 

 Milk canine 



Fig. 13. Dentition of upper jaw of three-months-old pig, with milk nip- 

 pers, corners and canines; middle incisors just breaking through. (Os- 

 tertag) . 



The secretion from this portion of the sublingual discharges through 

 six or eight openings along the lower portion of the dental arcade. 



Teeth 



The hog possesses the typical number of teeth for mammals. Nor- 

 mal pigs have eight temporary teeth when farrowed : four incisor 



