S-7/. <V r^i? 



c V" * 



VARIOUS KINDS OF BACTERIA. 



/I. To the left the common hay bacillus (Bacillus subtilis)\ to the right a Spiril- 

 lum. B. A Coccus form (Planococcus). C, Z>, .fi 1 . Species of Pseudomonas. 

 F, G. Species of Bacillus^ F being that of typhoid fever. H. Microspira. 

 /, K, L, M. Species of Spirillum. (After Engler and Prantl.) 



