THE CLASSIFICATION. OF BACTERIA 191 



Bouillon. Clear, with a heavy, flocculent growth. 



Milk. Coagulated, peptonized, slightly alkaline. 



Potato. Growth grayish white, elevated, dense. Spore germination polar. 

 Indol negative. HjS, negative or slight. 



Pathogenesis. iVIice inoculated subcutaneously die in 24 hours, of general 

 septicaemia. Guinea pigs and rabbits die in 48 hours ; spleen greatly en- 

 larged, bacilli in blood and organs. 



Habitat. Blood, etc., of anthrax subjects. 



190. Bact. anthracoides (Kruse) 



Described but not named Hueppe-Wood : Berliner Iclin. Woclienschrift, 1889, No. 16. 

 B. anthracoides Kruse : Die Milcroorganismen, 1896, 232. 



Morphology and cultural characters like anthrax. 



Pathogenesis . Subcutaneous inoculation of large doses into guinea pigs give 



only a local reaction. 

 Habitat. Earth and water. 



191. Bact. crystaloides (Dyar) 



B. crystaloides Dyar : I.e., 371, 



Morphology and cultural characters like the preceding. 

 Habitat. Isolated from a contaminated plate. 



192. Bact. aerophilum (FlUgge) 



B. aerofhilus Flugge : Die Milcroorganismen, 1886. 



Morphology. Bacilli slender, rods of variable length. 



Gelatin colonies. In 40 hours, small, punctiform, oval to pyriform ; no great 



increase of size. 

 Gelatin stab. Liquefaction broadly saccate. 



Potato. Growth dull yellow, smooth, parafEn-like, becoming dry to granular. 

 Habitat. Air and water. 



193. Bact. Trichomii (Trevisan) 



Bacillo delta gangrena senile Tricliomi : Riv. internaz. di Med. e. Chir., Ill, 1886, 73. 

 B. Trichomii Trevisan : Genera,'i889, 13. 

 Bacillus of Trichomi Sternberg : Manual, 1892, 473. 



Morphology. Bacilli 1.0-3.0 ju.; solitary — pairs; rods often show a club- 

 shaped thickening. Stained by Gram's method. Grow at 37° 



Gelatin colonies. In 24 hours, round, slightly dirty yellow ; liquefaction begins 

 in 36 to 48 hours. 



Gelatin stab. Liquefaction funnel-formed in 48 hours, with gas bubbles. 



