VARIOUS KINDS OF BACTERIA. 



A. To the left the common hay bacillus {Bacillus subtilis) \ to the right a Spiril- 

 lum. B. A Coccus form (Planococcus). C, D, E. 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.) 



