36 



1 2 3 



B 



*<? 



* 0* 



34567 



Fig. 19. Cholera asiatica. 



A. Comma bacilli, 1-4 after drawings ; 4, twisted coil, so-called 

 Spirodiscus, (about I : 1200) ; 5, 6, spiral filaments with spir- 

 ulina twistings (after photographs, about I : 700). 



B. Ripe arthrospores (after photographs), about I : 1000. 



C. i and 2, Arthrospores in filaments (after van Ermenghem, 

 from photograph), about i : 700. 



3-7, germinating arthrospores (after photographs by Pertik, 

 I : 1200). 



and Spirochcete to those that form arthrospores 

 (Fig. 19). Under this nomenclature, the 

 specific germ of Asiatic cholera would be de- 

 signated as Spirochcete, although in medical 

 literature the three names, Vibrio, Spiroch&te 

 and Spirillum are used interchangeably and 

 quite arbitrarily. The older usage has no harm- 

 ful effect if only there is a clear understanding 



