PLATE 56. 

 Spirilla. 



I. Spirillum serpens Muller. With difficulty stain- 

 ing protoplasmic border. X about 1000. Stained with 

 fuchsin. Copied after Zettnow (C. B. x, Taf. 5). 



II. Spirilla from Nasal Mucus. Smear preparation 

 with two cells. X about 1000. Copied after Weibel (C. B. 

 11, p. 468, Fig. 1). 



III. Spirilla from Nasal Mucus. Agar plate. Pure 

 culture. X about 1000. (Copied C. B. 11, p. 468, Fig. 2.) 



IV. Spirilla from Nasal Mucus. Gelatin plate. 

 Pure culture. X about 1000. (Copied C. B. 11, p. 468, 

 Fig. 3.) 



V. Spirillum undula Muller. With flagella. X 

 about 800. Copied after Loffler (C. B. vi, Taf. 1, Fig. 2). 



VI. Vibrio spermatozoides Loffler. X about 1000. 

 Copied after Loffler (C. B. vn, Taf. 111, Fig. 7). 



VII. Spirochete from Mucus of the Mouth. 

 (Copied after Loffler: Bakterien, Taf. 1, Fig. 4.) 



VIII. Spirochaete Obermeieri Cohn. Smear prepara- 

 tion from human blood. (Copied after Frankel and Pfeif- 

 fer, Atlas, No. 134.) 



IX. Spirilla of relapsing fever. Human blood. Spi- 

 rilla grouped in the form of a star. (Copied after M. J. Sou- 

 dakewitsch: Annales de l'instit. Pasteur, Bd. v, 1891, p. 

 514, plate 14, Fig. 1.) 



