THE CLASSIFICATION OF BACTERIA 149 



B. Milk coagulated (28 days) only after boiling. 



78. Bact. crassum (Kreibohm). 



C. Milk coagulation variable. 



79. Bact. rhinosclermatis (Trevisan) Migula. 



D. Milk not coagulated. 



1. Bacilli with capsules. 



80. Bact. Bordonii (Trevisan). 



2. Bacilli not distinctly surrounded by capsules. 



82. Bact. Bossonis. 



83. Bact. Czaplewskii. 



III. Gas production in glucose bouillon not stated. 



A. Obligate aerobic. Grow very slowly. 



84. Bact. urea (Miquel) Leube. 



B. Not strictly aerobic, as before. 



1. Grow best on blood serum at 37 C. 



85. Bact. Grawitzii (Trevisan). 



2. Grow well on ordinary media. 



a. Grow at ordinary room temperatures. 

 * Milk coagulated, acid. 



86. Bact. tenue (Pansini). 

 ** Milk becomes thick, viscous. 



87. Bact. subviscorum Migula. 



b. Growth only takes place at temperatures above 27 C 



88. Bact. sanguinis (Sternberg). 



BACT. ACIDI-LACTICI GROUP 



73. Bact. acidi-lacti Zopf 



Milchs&urebacillus Hueppe: Mitteilungen Kaiserl. Gesundheitsamte, II, 1882, 337. 

 Bact. acidi-lactici Zopf: Spaltpilze, 1883, 65. 



Morphology. Bacilli 0.5-0.6: 1.0-2.0 /*; often in twos. Optimum tempera- 

 ture 37 C. 

 Gelatin colonies. Coli-like. 

 Gelatin stab. A nail, flat-topped. 

 Agar slant. Growth white yellow. 

 Potato. Growth yellowish brown. 



Milk. Coagulated, acid, with production of C0 2 and alcohol. 

 Lactose bouillon. Gas. Non-pathogenic. 

 Habitat. Milk. 



