252 MICRO-ORGANISMS AND DISEASE [chap. 



very susceptible, and of which about 60 per cent, succumb. 

 When affected the animals are quiet, the voice is hoarse, 

 and the temperature is much raised ; on the skin of the 

 neck, chest, abdomen, and thighs extensive red patches of 

 swollen cedematous skin are noticed; under convulsions — 



Fig. 94 — St.'^b Culture in Gelatine of the Bacillus of Swine Erysipelas. 

 Natural size. 



occasionally paralysis of the hind extremities — the animals 

 die from between twelve hours and three or four days since 

 the first symptom. On post-mortem examination is found 

 haemorrhage in the affected patches of the skin, the lymph 

 glands are swollen and much congested, the peritoneum is 

 inflamed ; the mucous membrane of the intestine is much 



