BACILLUS CHAUVEI. 



529 



FIG. 92. 



a peculiar emphysematous swelling of the muscular 

 and subcutaneous cellular tissues over the quarters. 

 The muscles and cellular tissues at the points af- 

 fected are seen on section to be saturated 

 with bloody serum, and the muscles par- 

 ticularly are of a dark, almost black color. 

 In these areas, in the bloody transudates 

 of the serous cavities, in the bile, and, after 

 death, in the internal organs, the organism 

 to be described can always be detected. 

 It is manifest from this that the soil of 

 localities over which infected herds are 

 grazing may readily become contaminated 

 through a variety of channels, and thus 

 serve as a source of further dissemination 

 of the disease. 



The organism was first observed by 

 Feser, and subsequently by Bollinger and 

 others. The most complete description of 

 its morphological and biological peculiari- 

 ties is that of Kitasato. 1 The following 

 is from Kitasato's contributions : it is an 

 actively motile rod about 3 to 5 p. long by 

 0.5 to 0.6 fj. thick. It has rounded ends, 

 and, as a rule, is seen singly, though now colonies of the 



. . T , bacillus of symp- 



and then pairs joined end to end may oc- tomatic anthrax, 

 cur. It has no tendency to form very in dee P s elatin 



' culture. (After 



long threads. (Fig. 91, A.) FRANKEL and 



It forms spores, and when in this stage p 

 is seen to be slightly swollen at or near one of its poles, the 

 location in which the spore usually appears. (Fig. 91, B.) 



i Kitasato : Zeitschrift fur Hygiene, Bd. vi, S, 105 : Bd. viii. S. $5. 

 34 



