GENERAL, CONTAGIOUS, AND ENZOOTIC DISEASES. 



261 



Strangles manifests itself in three ways. 



Is^. It commences with the common symptoms of a mild catarrhal 

 affection. The animal is somewhat dull, has a slight cough, some sore- 

 ness of throat, a disinclination to feed, and more or less inability to swal- 

 low. The submaxillary space swells, is hot and tender, the swelling 

 filling up the whole space or confined to one side only; and is either dif- 

 fused or circumscribed. There is generally some dribbling of saliva from 

 the mouth, and a discharge from the nostrils. Fig. 131. In most in- 

 stances the pulse is somewhat hurried, and the respiratory movements 

 slightly increased. 



Fig. 131. 

 Symptoms of strangles. 



2d. For some weeks, or even months, prior to tlie local manifestation 

 of the disease, the animal is unthrifty, loses flesh, becomes hide bound, 

 drawn up at the flank; if at grass, stands apart from his fellows, has 

 more or less cough, often stretches himself as if fatigued, shivers on the 

 application of slight cold, his coat stares, his growth is arrested. The 

 horseman says that " he is breeding strangles," and time confirms the 

 correctness of this opinion, the local signs of the disease becoming de- 

 yeloped, and very often to a more severe extent than in the first form. 



dd. The premonitory signs are those Avhich have given the name to 

 the disease, namely, those simulating strangulation, with great diiiiculty 

 of respiration, accompanied by a loud trumpet-like sound, emitted more 

 especially during inspiration. This sound may arise from spasm of the 

 muscles that close the glottis, namely, the crico-thyroideus, crico- 

 arytenoideus lateralis, tliyro-arytenoideus, etc.; or from an oedema- 



