Symptoms. 



223 



gangrenous process may extend deeper, affecting the muscles, 

 while on the bridge of the nose and below tlie carpal and tarsal 

 joints it may: extend to the bone, leading to ugly ulcerations, 

 which continually discharge a purulent, ichorous, fetid secretion 

 containing necrotic tissue shreds. 



According to Javorsky's statistics swellings on the abdomen are observed in 

 47.3%, on the posterior extremities in 74.3%, and on all 4 extremities in 45.5% 

 of the cases. 



The swelling impairs the physiological functions and the 

 mobility of the affected part of the body. With the increase of 

 the swelling of 

 the nasal mucous 

 membrane the res- 

 piration becomes 

 snuffling, and is 

 especially difficult 

 during the act of 

 inspiration. The 

 labored respira- 

 tion is still more 

 severe .when the 

 swelling extends to 

 the folds of the 

 mucous membrane 

 in front of the 

 larynx, or to the 

 mucous membrane 

 of the larynx itself. 

 In such cases the 

 animals show all 

 the indications of 

 an inspiratory 

 dyspnoea (anxious 

 look, whistling or 

 rattling respira- 

 tion, spreading of 

 the legs, forced ex- 

 tension of the 

 thorax, with the 

 intercostal spaces sunken in) and with further progress of the 

 stenosis asphyxiation may result. 



The great swelling of the forehead renders the motion of 

 the" jaws and with it mastication more difficult, while the infiltra- 

 tion of the pharyngeal mucous membrane and of its underlying 

 connective tissue interferes with deglutition, so that in severe 

 cases the animals are unable to take nourishment, although their 

 appetite is not impaired, or they succeed only with great effort 

 in swallowing small quantities of food or a little water. 



The swelling of the extremities interferes more or less with 

 the gait of the animals. At first and even later in mild cases, 



Fig. 41. 



Purpura hemorrhagica. Commencing necrosis 

 of the skin on the swollen upper lips. 



