496 MANUAL OF MODERN FARRIERY 



any period during lactation. Sometimes it appears 

 in dry cows (in calf or barren), put to grass, and 

 is most troublesome to the grazier, as they cannot 

 give the animals the attention required. If the cow 

 is destined for the butcher, the teat is amputated at 

 the root, and the pus formed in this way allowed 

 to escape. 



The type of inflammation may be acute or 

 chronic. It, the inflammation, may be confined to 

 the lactiferous (milk) tubes, and the delicate mucous 

 membrane which lines their interior, and when this 

 is the case the disease is termed 



CATARRHAL MAMMITIS. 



In other instances the inflammation primarily 

 affects the secreting gland and connective tissue 

 structures, and then it is termed 



INTERSTITIAL OR PERENCHYMATOUS MAMMITIS. 



If the udder prior to the attack was healthy, and 

 the inflammation catarrhal, the symptoms are gener- 

 ally as follows, and confined to one quarter. 



Pain (not acute at first nor for some time) on 

 stripping the teat, the feeling of little hard lumps 

 distinct, and only felt here and there. No uniform 

 thickening and hardening of the gland and its con- 

 nective tissue, because they are not involved in the 

 inflammation. On withdrawing milk it is seen to 

 be changed. It may be tinted more or less red, or 

 watery, or curdled, and found to contain mucous, 

 pus, and blood-cells. Very little milk may be able 

 to be withdrawn, the teat sinuses or reservoirs being 

 blocked with coagulated milk and pus. Here, if 

 relief be not given, an abscess or abscesses form, 



