. Pathogenic micro-organisms, including bacteria and Protozoa; a practical manual for students, physicians and health officers. Bacilli showing one polar flagellum. Bacilli showing multiple flagella. So far, in only a few bacteria (the largest spirilla) have flagella been demon-strated during life, and then only under special conditions (see K. Reichertfor bibliography). We have, however, an organism belonging to the B. alveigroup, which shows its flagella very distinctly during hfe when a smallportion of the viscid growth in a liquefying Lofflers blood-scrum tube istransferred to a hanging ma
. Pathogenic micro-organisms, including bacteria and Protozoa; a practical manual for students, physicians and health officers. Bacilli showing one polar flagellum. Bacilli showing multiple flagella. So far, in only a few bacteria (the largest spirilla) have flagella been demon-strated during life, and then only under special conditions (see K. Reichertfor bibliography). We have, however, an organism belonging to the B. alveigroup, which shows its flagella very distinctly during hfe when a smallportion of the viscid growth in a liquefying Lofflers blood-scrum tube istransferred to a hanging mass of agar (p. 42) and examined under highmagnification. The flagella on this organism may also be seen with dark-field illumination. In a recent article Reichert claims that all motilebacteria show their flagella by this method. Physiologic Characteristics of Bacteria.—With the study of theorgans of locomotion we pass naturally to the consideration of theessential physiologic activities of bacteria, namely, motility (irritabil-ity), growth, reproduction, and spore formation. Some consider that every fla
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