NON-PATHOGENIC BACTERIA. 275 



water; spiral forms of various lengths; sometimes loo to 200 m 

 long; actively motile. 



The spirilla (vibrios or comma-shaped forms) closely re- 

 sembling the spirillum of cholera, will be considered in con- 

 nection with that organism. 



Fusiform Bacillus.— Vincent* was the first to describe 

 fusiform bacilli which he isolated from a case of diphtheroid 

 angina, and since his publication his observations have been 

 more or less corroborated by a number of others. 



t 



Fig. 60. — Spirilla from swamp-water. (X about 500.) 



Weaver and Tunniclifff cultivated fusiform bacilli from a 

 case of ulceromembranous stomatitis and from a case of 

 diphtheria. The cultures were grown under anaerobic condi- 

 tions at 37° C. They were inclined to regard the spiral forms 

 always present along with the fusiform organism as different 

 from these, but upon fuithei observation TunnicliffJ showed 



*Ann. de VInst. Pasteur. 1899. p. 609. (Cited from Gtinther. Loc. cit.) 

 fWeaver and Tunniclitf. Journal Infectiou.': Diseases. Vol. II., 1905. pp 

 446-459. Also Ebenda. Vol. IV., No. i. pp. 8-33. 



JTunnicliff. Journ. Infectious Diseases. Vol. III., igo6. pp. 148-155. 



