Explanation of Plate 53. 



VIBRIO CHOLERA (Koch) Buchner. 

 (Comma bacillus.) 



I. Pure culture from bouillon, twenty -four hours at 



37. Fuchsin stain, x 1,000. 



II. Pure culture from agar, twenty-four hours, x 

 1,000. Loffler's stain of flagella. 



III. Pure culture on gelatin, forty-eight hours. Per- 



fectly fresh preparation from water. (Copied 

 from Fraenkel and Pfeiffer, Fig. 94.) 



IV. Pure agar culture, four weeks old. Involution 



forms stained with fuchsin. 



V. Vibrio Metschnikovii Gamaleia. Smear prepara- 

 tion from pigeon's blood. (Copied from Fraen- 

 kel and Pfeiffer, Fig. 102.) 



VI. Vibrio proteus Buchner. Pure culture in bouil- 

 lon, twenty- four hours. Stained with fuchsin. 



53 



