Bergey's manual of determinative bacteriology : a key for the identification of organisms of the class schizomycetes / arranged by a committee of the Society of American Bacteriologists.

  • Bergey, D. H. (David Hendricks), 1860-1937.
Date:
1923
Catalogue details

Licence: In copyright

Credit: Bergey's manual of determinative bacteriology : a key for the identification of organisms of the class schizomycetes / arranged by a committee of the Society of American Bacteriologists. Source: Wellcome Collection.

    332/496 (page 316)
    75. Bacillus tostus Blau. (Centralblatt f. Bakteriologie, II Abt., XV, 1906, 97.) Rods: 1.4 to 1.5 by 4.5 to 5.0 microns, occurring singly, in pairs and short chains. Motile by means of peritrichous flagella. Spores polar, 0.4 by 2.0 microns. Cells store glycogen as reserve material. Gram¬ positive. Gelatin stab. Agar colonies: Small, white to yellowish-white, circular, raised. Agar slant: Thin, grayish-white, spreading, smooth, glistening. Broth: Turbid. Litmus milk. Potato: No growth. Indol not formed. Nitrates not reduced. Starch hydrolyzed. Aerobic. Optimum temperature 60° to 70°C. Habitat: Soil. Genus II. Clostridium Prazmowski Anaerobes or microaerophiles, often parasitic. Rods frequently en¬ larged at sporulation, producing clostridium or plectridium forms. The type species is Clostridium butyricum Prazmowski. Key to the species of genus Clostridium {Hall) A. Spores central or excentric. 1. Rods not swollen at sporulation. a. Motile. b. Coagulated albumen not liquefied. c. Brain not blackened. d. Gelatin not liquefied. e. Acid and gas in simple sugars. f. Glycerol not fermented. 1. Clostridium butyricum. dd. Gelatin liquefied. e. Acid and gas in simple sugars. f. Glycerol not fermented. 2. Clostridium kleinii. ee. Acid but no gas in simple sugars. f. Glycerol not fermented. 3. Clostridium pruchii. bb. Coagulated albumin liquefied. c. Brain blackened. d. Gelatin liquefied.