22 Veterinary Medicine. 



The technique of the Pasteurian inoculation is to inject, sub- 

 cutem, on the inside of the thigh, o.icc. of the weaker prepara 

 tion (premier vaccin), and twelve days after a similar dose of the 

 stronger one (deuxienie vaccin). 



This produces a mild attack of the disease from which the great 

 majority recover, and though they still react somewhat to a sec- 

 ond and third inoculation yet the disease so produced is rarely 

 fatal. 



CHOLERA SUIS ; HOG CHOLERA. 



Definition, Synonyms, History, Losses. Bacillus cholera suis, 1.2— 2/*., 

 aerobic, biology, table of germs ; accessory causes, roaming pigs, railways, 

 car litter and manure , boats, trucks, loading banks, chutes, runways, stock- 

 yards, pens, fairs, watershed, butchers, dealers, etc., wagons, dogs, birds, 

 vermin, insects, offal of abattoirs, butcher's and kitchen scraps, unburied 

 carcasses of dead hogs, convalescent and immune hogs, susceptibility, para- 

 sites and infection atria, putrid food, infection from ground carried into 

 feeding trough by snout and feet, large herds, rapid carriage of swine for 

 long distances. Lesions : haemorrhagic spots and petechise on skin, mucosae 

 and serosffi, circumscribed capillary congestions, congestion of spleen, 

 lymph glands, stomach, intestines, necrotic processes. Button like ulcers 

 on intestinal mucosae. Incubation, 6 to 14 days. Symptoms : fulminant 

 cases. Acute Cases : dulness, anorexia, recumbency on belly, weakness, 

 paresis behind, thirst, tenderness of skin and abdomen, hyperthermia, 

 easily blown, blush on skin, dark red spots and patches, enlarged inguinal 

 glands, cutaneous exudate — greasy or drying black, bowels costive, later 

 pultaceous and finally diarrhceaic, petechis on mucosae, emaciation. 

 Chronic Cases : symptoms more slight, but great loss of condition. Diagno- 

 sis : from swine erysipelas, swine plague, Widal test, table of differential 

 symptoms. Prevention : expense of extinction prevents effective measures ; 

 removal of accessory causes, comfort, air, light, food, salt, powdered soaps, 

 mouldy bread, cotton seed, space, green food, precautions against introduc- 

 tion of bacillus, special shipping provisions for fat hogs, exclusion of stock 

 hogs from infected localities, precautions by purchasers. Immunization, 

 Disinfection. Certificates. Extinction in herds and districts. Treatment : 

 chronic cases, food, antiseptic medication, antithermics stimulants, tonics. 

 Serum therapy, method, merits, demerits. 



Definition. A contagious bacteridian disease of swine, acute 

 or subacute, and characterized by hyperthermia and other febrile 

 disorders, — congestion, exudation, ecchymosis and necrotic ulcera- 



