URO-GENITAL SYSTEiM 



205 



Vulva 



Although the location of the vulva predisposes it to injury, such 

 mishaps are not common. 



Occasionally the Bacillus necrophorus infects the vulvar tissue and 

 produces typical necrobacillosis, which may terminate fatally unless 

 properly treated. 



Mammary Glands 



Although the mammary glands are modified glands of the skin, 

 they are essential to the life of the newborn. Therefore, a discus- 



Fig. 41. INFECTION OF MAMMAKY GLAND. A, normal glandular tissue; B, 

 calcified areas; C. galaetophorous sinus. 



sion of the diseases liable to affect these glands belongs properly 

 with the consideration of the reproductive organs. 



The location of the mammae of swine predisposes them to injury 

 and infection of various kinds, and in addition the mammary gland 

 contains a milk cistern which is also easily infected. But since swine 



