194 



BACTERIA 



The organisms and spores are not so very resistant as any 

 strong germicide or a temperature of 100 acting a few minutes 

 will kill them. 



SYMPTOMATIC ANTHRAX BACILLUS 



Bacillus Chauvoei. 



Bacillus of Symptomatic Anthrax. 

 Rauschbrand Bacillus (Figs. 56 and 57). 



FIG. 56. Rauschbrand bacilli showing spores. (Kolle and Wassermann.) 



The cause of symptomatic anthrax, black-leg, or quarter-evil, 

 in cattle. 



Morphology and Stains. This is a large organism, .5^ in width, 

 and 3 to 5/x in length. It has rounded ends, and grows in pairs, 

 but not in strings or chains. It is motile, and has many peritri- 

 chous flagella. When stained for spores, these bodies may be 

 found distending the organism in the middle or at the end, and the 

 bacillus assumes a drum-stick, or spindle shape. Often chromo- 

 philic granules are present; involution forms also appear, and are 

 of enormous size. This organism stains with all the common 



