Laryngitis in Cattle. 129 



causes as in the horse, though these are manifestly less injurious. 

 Cadeac draws attention to its greater frequency in working 

 oxen ; in cattle fed on swill of breweries and distilleries ; and as 

 occurring from mercurial poisoning ; also to the frequency of a 

 contagious form following specific hsematuria, attended by high 

 temperature 104° to 107° F., and running a course of two or 

 three weeks. Recoveries appear to be the rule. 



Symptoms. The disease usually affects at once the larynx and 

 pharynx so that the symptoms are somewhat modified. In the 

 simplest form there is only a small, hacking cough, a flow of 

 saliva from the mouth and some loss of appetite but no fever. 

 In more acute cases the breathing is loud and wheezing, the 

 cough, soft and rattling, is followed by a free discharge of mucous 

 from the mouth, the nostrils and eyes are red, the muzzle dry, 

 the pulse acelerated and full, the throat tender to the touch, and 

 swallowing difficult, part of the food and drink being rejected 

 through the nose. If the larynx is chiefly involved the loud 

 noise in breathing is the predominant symptom and sometimes 

 almost the only one. 



Course, etc. The cough and other symptoms are usually mod- 

 erated with the access of the abundant secretion on the second or 

 third day, and recovery is perfect on the eighth to the fifteenth. 

 If abscess results, to which there is a far greater liability than in 

 the horse, it may not burst till the twentieth day and the case is 

 correspondingly protracted. This should be carefully distin- 

 guished from the deposits of tubercle which take place around 

 the throat in cattle. In rare cases the disease becomes chronic. 



Treatment does not differ from that advised for the horse ex- 

 cept in the greater safety of purgatives which must in this case 

 be saline (fepsom or glauber salts one to two pounds), and in the 

 greater ease with which local treatment can be applied owing to 

 the shortness of the soft palate. When abscess forms it must be 

 encouraged by poulticing and opened with the knife or lancet as 

 soon as it points. 



