ee. Milk not fermented stormily. f. Slow, spongy coagulation of milk. Clot slowlj^ digested. 72. Clostridium chromogenes. ff. Milk coagulated rapidly. Clot not digested. 73. Clostridium corallinum. dd. Pink to orange-red pigment produced in maize mash. Nitrites not produced from nitrates. 74. Clostridium aurantibutyricum. cc. Yellowish pigments produced. d. Yellow-orange pigment produced in various media. Indole not produced. Milk actively coagulated but not stormily. Clot not digested. 75. Clostridium Jelsineum. dd. Canary-yellow pigment produced in various media. 76. Clostridium flavum. aa. Terminal spores. b. Ovoid spores. c. Non-motile. Gelatin and/or glucose-gelatin not liquefied. Deep red pigment produced on potato slants. 77. Clostridium carbonei. cc. Motile. 78. Clostridium haumanii. bb. Spherical spores. Produces a soluble, green pigment. 79. Clostridium virens. B. Cellulose typically fermented. Terminal spores. Rods distinctly swollen at sporula- tion. 1. Distinctive pigments not characteristically produced. a. Distinctly ovoid to ellipsoid spores, b. Motile. c. A variety of carbohydrates, other than cellulose, are fermented after prolonged incubation. 80. Clostridium spumarum. cc. Carbohydrates, other than cellulose, not fermented. 81. Clostridium werneri. bb. Non-motile. 82. Clostridium leptinotarsae. aa. Spores spherical, or nearly so. b. Non-motile. Glucose not fermented. 83. Clostridium cellulosolvens. bb. Motile. c. Glucose fermented. 84. Clostridium cellobioparum . cc. Glucose not fermented. 85. Clostridium omelianskii. 2. Distinctive pigments characteristically produced in certain media. a. Distinctlj^ ovoid to ellipsoid spores, b. Non-motile. 86. Clostridium dissolvens. bb. Motile. 87. Clostridium^ thermocellum. aa. Spores spherical, or nearly so. Thermophilic. Glucose fermented. 88. Clostridium, thermocellulaseum.
