D » ^ 



0000000000000000% 



Cultures of B. alvei (after Cheyne). A. Colonies on the surface of gela- 

 tine {6 diameters). B. The same colonies 24 hours later. C. Culture 

 tube ; gl. gelatine ; p. cotton wool plug. D. Spore becoming 

 bacillus (1800 diameters.) E. Bacillus becoming a spore. F. Spores 

 in line, taken from a gelatine culture. G. Colony developing. 



