524 



BACTERIOLOGY. 



both ends are rounded. (How does it differ in this 

 respect from bacterium anthracisf) It is slowly motile, 

 and its flagella are located both at the ends and along 



FIG. 89. 



f 



Bacillus cedematis. A. CEdema-fluid, from siteof Inoculation of guinea- 

 pig, showing long and short threads. B. Spore-formation, from culture. 



the sides of the rod. It forms spores that are usually 

 located in or near the middle of the cells, causing fre- 

 quently a swelling at the points at which they are 

 located and giving to the cell a more or less oval, 

 spindle, or lozenge shape. (Fig. 89, B.) 



It is an obligate anaerobe, growing on all the ordinary 

 media, but not with access of oxygen. It grows well in an 

 atmosphere of hydrogen. It causes liquefaction of gelatin. 



