PREVENTION, SYMPTOMS AND TREATMENT 239 



hers. In the mouth are seen on the tongue, cheeks, palate, gums and 

 pharynx, yellow-gray patches with thick, red, granular borders, from 

 the size of a cent to a silver dollar, irregular in shape. These are 

 due to coagulation necrosis (diphtheric membrane), further changed 

 to a caseous mass by a specific ferment of the bacilli. The necrotic 

 tissue is not readily removed and may perforate the cheek, and 

 gums or palate to the bone, or invade the tongue to the depth of an 

 inch. There are enlarged glands about the throat, high fever, foul 

 discharge from the mouth and swollen tongue, emaciation and great 

 weakness. The nostrils may be the seat of necrotic patches and 

 nasal discharge and obstruction may occur, and, in cases of long 

 duration (three to five weeks), extension of the process may involve 

 the larynx, trachea and lungs with signs of broncho-pneumonia and 

 pleurisy, and the intestines with diarrhea. 



In very acute cases the animals may not live longer than a 

 week. Untreated cases are generally fatal, while the reverse is 

 true in those cared for. 



No other disease is likely to be mistaken for it. Foot-and-mouth 

 disease and mycotic stomatitis can be readily distinguished from it. 



Prevention and Treatment. — Isolation of the sick is imperative. 

 Those exposed should be carefully watched and their mouths 

 syringed out twice daily for five days with two per cent, lysol or 

 other antiseptic solution. Disinfection of the infected premises and 

 also those occupied by bovines with diphtheric inflammation of the 

 genitals or foot rot is also a requisite (see p. 282). 



The local treatment desirable is that used generally in 

 stomatitis. Irrigations twice daily with one per cent, carbolic or 

 two per cent, lysol or creolin, painting the patches with Lugol's solu- 

 tion after irrigation, and the internal use of the following is recom- 

 mended by Mohler : 



Acid. Salicyli ; dss 



M. et f. pulv 1. Dispense pulv. tales No. xxi. 

 Sig. One powder t. i. d. in water. 



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