26 



Veterinary Medicine. 



Hog Cholera. 



McFadyean's. 



Swine Plague. 



B. Choleree Suis Swine Fever B. B Pestis Suis 



1.2 tO 2/1 X 5 tO 0.8/4 I tO 2/1 X o.6/u o.8 to 1.5/* X o.6 to o.8/t 



Endsrounded Ends rounded Ends rounded 



Involution forms Involution forms 



Actively motile in liquids Actively motile Nonmotile 



Flagella 



Stains throughout, light- 

 er in center 



Bleaches in Gram's (I) 

 Solu ___ 



^Erobic (Fac. Anaerobic) 

 Vigorous growth in alka- 

 line nutrient fluids 



Active growth on potato 

 yellowish, becoming 

 darker 



On gelatine, small, round 

 brownish colonies 



Nonliquefying . 



On agar conical colonies, 

 grayish white, semi- 

 translucent, shining__ 



In milk grows freely, no 

 acid, no clot : Saponi- 

 fies in 3 or 4 weeks 



Forms no indol in pan- 

 creatic bouillon 



Ferments glucose, form- 

 ing acid and gas 



Lactose not fermented 



Saccharose not ferment- 

 ed ; alkalinity ; no gas 



Thermal death point 

 (moist) 58 C. in 15 

 minutes 



Desiccated it dies accord- 

 ing to bulk in 7 to 49 

 days . 



Dies in water in 3 to 4 

 months 



Dies in soil in 2 to 3 

 months 



No Flagella 



Polar or uniform faint From fresh organs polar 



stain stain, from old cultures 



uniform 



Bleaches in Gram's (I) Bleaches in Gram's (I) 



Solu Solu 



^Erobic ^Erobic, ( Fac. Anaerobic) 



Slight growth in alkaline Weak growth in alkaline 

 nutrient fluids nutrient fluids 



No growth on potato. 



On gelatine light bluish 

 colonies shading off in- 

 sensibly at edges 



Nonliquefying 



On agar slight, transpar- 

 ent, almost invisible 

 growth 



Grows in milk, no clot_ 



On potato at 37°C. a 

 slight, thin gray, waxy 

 layer 



O u gelatine feeble 

 growth or none 



Nonliquefying 



On agar, grayish trans- 

 lucent, or brown, 

 knobbed, waving edges 

 Grows in milk, no acid, 

 no clot 



Forms no indol in pan- 

 creatic bouillon 



Does not ferment glu- 

 cose, forms acid, no gas 



Lactose not fermented__ 



Saccharose fermented, 



forms acid, no gas 



Thermal death point 58 Thermal death point 

 C. in 10 minutes (moist) 58°C. in 7 min- 

 utes 



Dies quickly, if dried at Dies in 3 days if dried __ 

 body temperature 



Dies in water in 10 to 15 



days 



Dies iu soil in 4 to 6 days 



Pathogenic to swine, rab- Pathogenic to swine and Pathogenic to swine, 



bits, guinea pigs, mice, rabbits hens, pigeons, pheas- 



pigeons ants, sparrows, mice, 



rabbits, cattle, deer, 



guineapigs, etc 



Guineapigs immune 



