FAMILY XIII. BACILLACEAE 639 



d. Milk acidified. 



e. Milk slowly and softlj- coagulated, not stormily. Clot not 

 digested. 



43. Closlridium sphcnoides. 

 ee. Milk not coagulated. 



44. Clostridium innominalmn. 

 dd. Milk neither acidified nor coagulated. 



45. Clostridium microsporum. 



cc. Rods not swollen at sporulation. Non-motile. Gelatin and/or glu- 

 cose-gelatin not liquefied. Glucose fermented. Coagulated albumin 

 not liquefied. Milk acidified but not coagulated. 



46. Clostridium filiforme. 

 aa. Terminal spores. 



b. Distinctly ovoid to ellipsoid spores. Rods distinctly swollen at sporula- 

 tion. 

 c. Motile. 



d. Gelatin and/or glucose-gelatin not liquefied. 



e. Glucose fermented. Coagulated albumin not liquefied. 



f. Milk slowly coagulated. Clot not digested. Glycerol not 

 fermented, 

 g. Mannitol fermented. 



47. Clostridium sartagoformum.. 

 gg. Mannitol not fermented. 



48. Clostridium paraputrificum. 

 ff. Milk unchanged. 



49. Clostridium indologenes. 

 ee. Glucose not fermented. 



f. Coagulated albumin not liquefied. Milk unchanged. 



50. Clostridium cochleariuvi . 



ff. Action on coagulated albumin not recorded. No growth 

 on milk or on iron-milk (Spray). Carbohydrates not fer- 

 mented, 

 g. Ethyl alcohol fermented chiefly to caproic acid. 



51. Clostridium kluyveri. 



gg. Ethyl alcohol not fermented to caproic acid. Requires 

 uric acid or other purines as primary source of car- 

 bon and energy 



52. Clostridium acidiurici. 



dd. Gelatin and/or glucose-gelatin liquefied. Glucose fermented, 

 e. Coagulated albumin liquefied. 



f . Milk often, but not always, coagulated. Clot, if produced, 

 not digested. 



53. Clostridium capiiovale. 



ff. Milk partially coagulated, later partially digested. 



54. Clostridium cadaveris. 

 ee. Coagulated albumin not liquefied. 



55. Clostridium saprogenes. 

 cc. Non-motile. 



56. Clostridiwn perenne. 

 bb. Spores spherical, or nearly so. 



c. Rods distinctly swollen at sporulation. 

 d. Motile. 



e. Action on gelatin definitely established. 



