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Fig. 68. A group of Bacteria, the bodies being black, and bearing motile cilia in 

 various ways. .1, the two to the left the common hay BacUhis (B. srihtilis), the 

 one to the right a Spirilliwi ; B, a Coccus form {Planococcus)\ C, D, E, species of 

 Pseudomonas : F, G, species of Bacillus, i^" being that of tyjjhoid fever; II, Micro- 

 spira ; J, A', L, M, species of Spirillum.— After Engler and Pkantl. 



