GROUPING. 



49 



The bacilli comprise all oval or rod-formed bacteria. 

 (See Fig. 3.) 



oo. 



m 



Fig. 2. 



oooooO 



^ooo 



uO 



00 

 IJW ID . 



ffi S8 



'eg 



oa, 



£ 



'» ® 0^0 Cg:> 



c d e 



a. Staphylococci. 6. Streptococci, c. Diplococci. d. Tetrads, e. Sarcinss. 



*'.>'. 



Ka. S. 











a. Bacilli in pairs. 5. Single bacilli, c and c?. Bacilli in threads. 

 e and /. Bacilli of variable morphology. 



Fig. 4, 



^~ jX*^ \SV, 



j)-v^ \^^ ^H^^,i' 



(I 6 c ff 



aandd. Spirillainshort segments and longer threads— the so-called comma 

 forms and spirals. 6. The forms known as spirochfeta. c. The thick spirals 

 sometimes known as vibrios. 





-'"^-h. 



^-^ 



