INVOLUTION FORMS 29 



types already drawn up ( 27), and have no regular outline, but frequently 

 exhibit the most surprising shapes ; generally they are strongly bulged and 



FIG. 6. Involution Forms. 



A, of Lactic acid bacteria, after Maddox. 



B, of Clostridium Polymyxa, after Prazmo/rs/ci. 



C, of Bacterium Zopfii, after Kurth. 



D, of Bacillus subtilis, and 



E, of Bacillus anthracis, after H. Biichner. 



F, of Vibrio rugula, after Warming. 



distended, as can be seen in the examples given in Fig. 6. The faculty of form- 

 ing spores is no longer one of their attributes, and they must be regarded as 

 a diseased condition preceding dissolution. In the following pages frequent 

 occasions will arise of calling attention to similar degeneration forms. 



