Essentials of bacteriology; being a concise and systematic introduction to the study of bacteria and allied microörganisms . a. Pathogenesis.—^Is not usually pathogenic for rabbits andmice, though in guinea-pigs and birds it produces gas phleg-mons. It is sometimes found in autopsies on human sub-jects, producing bubbles or cavities in the viscera (Schaum-organe), but this is probably due to postmortem migrationof the germ from the intestine. It has been recovered fromthe blood during life, however, and is the most frequentcause of emphysematous gangrene. In man, infection ofwounds, through d
Essentials of bacteriology; being a concise and systematic introduction to the study of bacteria and allied microörganisms . a. Pathogenesis.—^Is not usually pathogenic for rabbits andmice, though in guinea-pigs and birds it produces gas phleg-mons. It is sometimes found in autopsies on human sub-jects, producing bubbles or cavities in the viscera (Schaum-organe), but this is probably due to postmortem migrationof the germ from the intestine. It has been recovered fromthe blood during life, however, and is the most frequentcause of emphysematous gangrene. In man, infection ofwounds, through dirt, with this bacUlus causes rapid emphy- ANAEROBIC BACTERIA 187 sema of the wound and a thin offensive discharge and fataloutcome. After death the bacillus develops rapidly andthrough the blood-vessels brings on general emphysema, withlarge accumulation of hydrogen gas in all the organs andsubcutaneous tissue. Various foreign observers have de-scribed organisms having similar properties, and have giventhem such names as Bacillus perfringens, B. enteritidis sporo-genes, Granulobacillus immobUis, B. Fig. 94.—Bacillus aerogenes capsulatus (from photograph by ProfessorSiraon Flexner). but they were probably dealing with the Bacillus aerogenescapsulatus. Bacillus Enteritidis Sporogenes (Klein, 1895).—Re-garded as identical with B. aerogenes capsulatus {q. v.). Bacillus Chauvei.—Synonyms.—Bacillus of SymptomaticAnthrax (BoUinger and Feser); Rauschbrand (German); Char-bon symptomatique (Arloing, Cornevin, and Thomas). Origin.—This bacillus, described in 1879, has been isolated,and by animal inoculation shown to be the cause of theblack-leg or quarter-evil disease of cattle. l88 ESSENTIALS OF BACTERIOLOGY Form.—^Large slender rods, which swell up at one end or inthe middle for the spore (Fig. 95). Properties.—They are motile, and liquefy gelatin quiterapidly. A rancid odor is developed in the cultures. Cultures.—The growth occurs slowly, and onl
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