i 



rs 



»A # ^ 



<^>p^Q 





v> (k 



<V0 





Fig. 1.— a-A. Different types of cocci, a. Single round cocci and simple diplococcal 

 forms, b. Lancet-shaped cocci (type of pneumococcus). c. Biscuit cocci (gonococcus). 

 d. Streptococci, e. Staphylococci. /. Tetrads (micrococcus tetragenus). g. Sarcina forms. 

 h. Gapsulated cocci. iM7. Bacilli. i l -i s . Ordinary types of different shapes, i 4 , i 5 . Bacilli 

 with granular or vacuolated protoplasm, i"*, i 1 . Large forms, fc-n. Spirochetes. fc 1 . Spiro- 

 chete with open turns (spirochete refringens). & a . Possible longitudinal splitting of 

 spirochete. «3, Two individuals separating, m. Spirochete with irregular turns, n. 

 Spirochete with close turns (spirochete pallida), o. Mixed type of fusiform bacilli and 

 spirilla (see Chapter XVII.). p. Spirilla. p\ Comma type. p2. Spirillary type. (/.Differ- 

 ent types of flagellum formation, q 1 . Terminal flagella. q 2 . Peritrichous formation. 

 q s . Flagella on spirillum, o 4 . Large flagellated spirillum. r\ Wreathed mass of flagella. 

 r 2 . Detached flagellum. r*. Detached flagella assuming ring form. s. Types of sporula- 

 tion. *i. Terminal, a 2 , s 4 . Mesial, s 3 . Subtenninal. s». Detached spores, i 1 , t' 2 . Involu- 

 tion forms (b? diphtherie). u. Hofmann's bacillus. i>M;3- Involution forms (b. pestis). 

 w. Streptothrix actinomyces. x. Leptothrix innominata. y. Thiothrix tenuis. 



13 



