56 Veterinary Medicine. 



counted for by the implication of the deeper and important 

 structures but also in no small degree by the entrance into the 

 circulation of the ptomaines and toxins, which in the catarrhal 

 affection escape largely from the inflamed surface. 



The resulting abscess is usually in or near a gland or group of 

 lymph glands. The part passes through the usual succession of 

 changes, of soft pitting swelling ; firm, tense, painful condition 

 in which the exuded lymph has coagulated ; and softening and 

 fluctuation which progresses from the centre toward the circum- 

 ference. The abscess points variously according to its seat. If 

 in the intermaxillary space it opens externally. If sub-parotidean 

 or peripharyngeal it may burst inwardly into the pharynx' or 

 outwardly through the skin. If supra-pharyngeal (retro-pharyn- 

 geal), it may be so thickly encapsulated in unyielding walls that 

 it may remain long indolent and inactive becoming a cold or 

 chronic abscess. When an abscess opens into the pharynx, there 

 is a sudden and copious flow of pus by the nose, and it may be 

 by the mouth and a simultaneous subsidence of the inflammation. 



Among the complications of the affection are asphyxia, oedema 

 glottidis ; abscess of the guttural pouch ; rupture of an abscess 

 into the larynx, and the descent of pus into the lungs ; the en- 

 trance of saliva and alimentary matters into the lungs ; gan- 

 grenous pneumonia ; pharyngeal fistula ; pressure on the vagus 

 and paralysis of the pharynx or larynx ; secondary abscesses ; 

 septicaemia. 



Lesions. Besides the general inflammatory lesions some rather 

 remarkable ones have been observed. Fractured hyoid, dissec- 

 tion of the mucous from the muscular coat, by aliments, for 

 nearly the whole length of the oesophagus (Bruckmiiller), puru- 

 lent infiltration of the supra-pharyngeal muscles (Wakefield), 

 nlceration of the pharyngeal or guttural sac mucosa, or even 

 gangrene, purulent effusion in the tonsils, around the hypoglossal 

 nerve, the lingual branch of the fifth, or the vagus, embolic 

 inflammations, suppurations or gangrene of the bronchia, and 

 implication of the lung tissue and pleura. Catarrhal enteritis 

 and fatty liver and kidney are common. 



Treatment. Besides the general measures advised for catarrhal 

 pharyngitis, this type demands especially measures to moderate 

 the intensity of the suffering, and when abscess appears inevitable 



