THE STRUCTURE OF BACTERIA. 19 



when fermentation is at its height. In such 

 cases they may be regarded as true develop- 

 mental forms. In other species such an ap- 

 pearance foreshadows spore-formation. Even 



Fig. 9. Degeneration forms. J, lactic acid bacteria after Maddox. 

 B, Clpstridium polymyxa, after Pra/mowski. C. Bacterium 

 Zopfii, after Kurth. D, B. Snbtilis and E, B. anthracis, after 

 BLichner. F, Vibrio nigula, after Warming. G, V. cholerce 

 asiaticce, after van Ermenghem and Hueppe. 



more frequently such forms appear as the 

 forerunners of death, as degeneration forms 

 due to the swelling up of the membrane (Fig. 

 9). Death is also sometimes accompanied by 



