146 BOVINE PATHOLOGY. 



nature^s efforts to expel the contagium. To remove the 

 causes we must divide the herd into diseased, suspected, 

 and unsuspected lots. The latter should be examined 

 daily to detect any rise of internal temperature ; the 

 suspected should be isolated and drafted into the diseased 

 lot as they become affected. Disinfection should be 

 rigidly enforced, and the animals not removed from 

 quarantine until about a week after the last case of disease 

 has been removed from among them. The diseased should 

 have soft diet as much as possible, and those but slightly 

 affected require little more attention. Where the patients 

 are seriously debilitated they will require tonics. When 

 the eruptions on the teats tend to block up the milk 

 passages, the milk must be drawn off with the syphon. 

 When the udder is inflamed it must be duly supported 

 and treated as in ordinary mammitis. The diseased feet 

 must be kept as clean as possible and protected by 

 bandages, complications receiving the attention recom- 

 mended in '^ foul.'' Calves ought to be removed from cows 

 affected by this disorder and hand-fed with good milk, 

 for these young animals are liable to suffer severely from 

 the disease, the whole alimentary tract being involved. 

 Fairs, markets, and other centres of cattle traffic are the 

 sources of introduction of this disease into farms ; and 

 high roads are often traversed by diseased flocks and herds, 

 which thus leave virus behind them for those that follow. 

 The farmer must be advised, therefore, to keep newly 

 purchased animals away from the rest of his stock for a 

 few days after their arrival, to avoid pasturing animals 

 on fields bordering on high roads when the disease is 

 rife in the neighbourhood, and, as a public duty, not to 

 place diseased animals there ; also all measures of disin- 

 fection should be strictly enforced. Especially the same 

 attendants should not have charge of both sick and healthy 

 animals. Unless sanitary measures be strictly enforced 

 the disease may assume its severest forms. 



Post-mortem examination shows the mucous membranes 

 variously involved in different cases. Thus, the larynx, 

 nasal chamber, and alimentary canal, sometimes present 



