43 6 



Vincent's Angina 



Glucose-bouillon. -No growth when more than i per cent, of glucose 

 is present. The medium is clouded with some sediment. 

 From all of the cultures a somewhat offensive odor is given off. 



Fig. 164. Bacillus fusiformis. Pure culture grown four days in ascites broth 

 (Ruth Tunnicliff in "Journal of Infectious Diseases.") 



Morphology. The Bacillus fusiformis presents the same appear- 

 ances, no matter what medium it grows upon. It measures 3 to 10 ju 

 in length, 0.3 to 0.8 p in thickness. The greatest diameter is at the 



Fig. 165. Bacillus fusiformis. Smear from gum in normal mouth. (Ruth 

 Tunnicliff in "Journal of Infectious Diseases.") 



center, from which the organisms gradually taper to blunt or pointed 

 extremities. 



The organisms stain with Lofner's alkaline methylene blue, with 

 diluted carbol-fuchsin, by Gram's method, and by Giemsa's method. 



