28 



Veterinary Medicine. 



Hog Cholera. 



Hen or pigeon has slough 

 where inoculated, diar- 

 rhoea, ruffled plumage, 

 somnolence 



Rabbits getting o.icc. 

 virulent culture sub- 

 cutem die in 5 to 7 days 

 with enlarged spleen 

 and necrotic liver feci. 



Weaker culture kills in 

 10 to 20 days with en- 

 larged spleen, or re- 

 covery ensues 



Guineapigs die in 7 to 12 

 days 



Swine inoculated subcu- 

 tem have often local 

 lesions and bacilli, also 

 in lymph glands, only 

 exceptionally fatal 



Ingestion of virulent cul- 

 tures by fasting pig 

 causes bowel lesions 

 and death 



Intravenous inoculation 

 in pig causes septicse- 

 mic lesions and death, 

 or chronic diseases and 

 typical bowel ulcers. _ 



McFadyean's. 



Rabbits getting 0.5 to 

 ice. culture subcutem 

 had tumor like walnut 

 but recovered 



Not pathogenic to Guin- 

 eapig 



Ingestion of 30 cc. by 

 pigs proved always 

 fatal 



Swine erysipelas kills inoculated pigeon in 3 to 8 

 days. 



Swine Plague. 



Hen or pigeon dies in 48 

 hours, after drowsi- 

 ness, drooping wings, 

 sunken head, ruffled 

 plumage, liquid stools, 

 soft black comb and 

 wattles, prostration 



Rabbits getting o.oicc. 

 culture subcutem die 

 in 16 to 20 hours, with 

 inflamed serosae and 

 lung; Petechias 



Weak cultures kill in 4 

 to 10 days, with in- 

 flamed serosse and sup- 

 puration 



Guineapigs die in 1 to 4 

 days 



Swine inoculated have 

 local lesions only, only 

 exceptionally fatal 



Ingestion of virulent cul- 

 tures by pigs is usually 

 harmless 



Intravenous inoculation 

 causes septicaemia and 

 death in 1 or 2 days__ 



Intrapulmonary infec- 

 tion causes pleuro- 

 pneumonia 



days, and rabbit in 4 to 8 



Accessory Causes. These are especially those conditions which 

 favor the transmission of the germ from animal to animal. They 

 include the reprehensible habit of allowing swine to run at large 

 so that herd mingles with herd ; the freedom to wander along 

 the lines of railroad by which hogs are carried, and where the 

 infected excretions fall on the ground ; the scattering of infected 

 litter or manure from a car or boat ; the use of the same cars, 

 boats or trucks for the conveyance of infected and sound pigs in 

 succession, without intermediate disinfection ; the use of the 

 same loading banks, chutes, runways, yards, pens and feeding 

 and watering troughs by strange pigs from all sources in succes- 



