196 IMPORTANT VARIETIES OF FISSION-FUNGI. 



3. Chains of slender rods. Bact. ulceris cancrosi (Kruse), L. and 

 N., page 207. 



(D) Grow well upon all ordinary nutrient media, especially 

 upon agar and gelatin. 



I. Colonies and nutrient media remain colorless. 



(A) Gelatin not liquefied, organisms without flagella, non-mo- 



tile. 

 +. No visible gas formed from grape-sugar. 1 



1. Not stained by Gram's method. When coming from the 



animal body they show polar staining. Form abundant 

 acid from grape- and milk-sugar. Milk often not coagu- 

 lated. Growth on potato usually poor, whitish-gray. 

 Bact. septicaemia? haemorrhagicae, Huppe, page 208. 2 



2. Very similar to 1. Causes tuberculous-like changes in the 



animal. Bact. pseudotuberculosis rodentium, L. and 

 N., page 213. 



3. Very similar to 1 ; usually still more delicate. Tendency 



to formation of involution forms upon chlorid of sodium 

 agar. Bact. pestis (Yersin-Kitasato), L. and N., page 

 213. 



4. Stains by Gram's method. Grows poorly upon solid 



nutrient media ; marked formation of acid from sugar ; 

 milk is coagulated. Bact. Giintheri, L. and N., page 

 223. 



5. Stains by Gram's method. Abundant growth upon solid 



nutrient media. No formation of acid from milk-sugar. 

 Milk becomes slimy. Bact. lactis viscosum ( Adametz), 

 L. and N. , page 230. 

 -\ — f-- Evident gas-formation from grape-sugar ; closely related 

 varieties. 



1. Stains by Gram's method. Marked fermentation of milk- 



sugar. Milk coagulated. Bact. acidi lactici, Huppe, 

 page 220. 



2. Does not stain by Gram's method. 



X'. Phosphorescence when oxygen is admitted. Bact. 



phosphorescens, B. Fischer, page 231. 

 XX- No phosphorescence when oxygen is admitted (group 

 of the Bact. pneumoniae Friedlander). 

 (a) Fermentation of milk-sugar with liberation of gas. 

 Milk coagulated. Bact. aerogenes, Escherich, L. 

 and N., page 221. 

 (P) Fermentation of milk-sugar without liberation of 

 gas. Capsules formed in animal. Bact. pneu- 

 moniae, Friedl., page 225. 



(B) Gelatin not liquefied. Organisms motile, with many peri- 



trichous, rarely with one or a few polar flagella. 

 (a) No fermentation of sugar with formation of gas. Milk not 



1 See the remarks regarding our contradictory findings in connec- 

 tion with Lbffler's swine plague. 



2 See also Bact. bsemorrhagicum (Kolb), L. and N, 



