4IO 



]\IICRO-ORGAXIS:\IS AND DISEASE [chap. 



the necrotic tissue of the tumour in noma of a child a motile 

 vibrio, which does not liquefy gelatine ; it forms on it in 

 streak a moist brownish growth ; in film specimens the 

 vibrios are found as commas, as S-shaped forms, and as 

 wavy or corkscrewlike longer or shorter spirilla. It grows 

 well at 37" C. on Agar and forms also here in streak a 

 brownish moist filmy growth. In gelatine plate it forms 



Fig. i6S. — Film Specimen of a Flake of a Rice-watfr Stool, showing the 

 ViLKios IN Linear Rous ; one shows a Flagellu.m. 



greyish round colonies which slowly enlarge, and after a 

 week or ten days are not more than a few millimetres in 

 diameter. {Bacteria in Asiatic Cholo-a. Macmillan, 1889, 

 p. ro3.) 



(/) Vibrio or spirillum ciiolcrce Asiaticcc (Koch), comma 

 bacillus of Koch. — Examining microscopically the intestinal 

 discharges of acute cases of cholera one notices, besides 



