2 28 MANUAL OF BACTERIOLOGY. 



branous inflammation of the pharynx has been attributed to 

 an organism called the fusiform bacillus or spirillum of Vin- 

 cent.* 



Higher Bacteria. — Certain organisms (beggiatoa, thiothrix, 

 leptothrix, cladothrix, actinomyces or streptothrix) of more 

 complicated structure than most bacteria, but resembling them 

 in many respects, are called "higher bacteria." They con- 

 sist of definite filaments which are usually made up of rod- 



s'*^. 



\^} 





Fig. 56. — Spimlla from Swamp Water Showing Flagella (Lofelee 

 Stain). (X 1000.) 



shaped elements, but the relation between these elements is 

 very intimate. Some of them (beggiatoa, thiothrix) contain 

 sulphur granules. Many of them occur in water. There are 

 forms among them which are found attached to some object 

 by one end of the filament (thiothrix). Some of them (actino- 

 myces or streptothrix) have branching filaments, which are 

 rarely seen among the lower bacteria (see page 108). Often 



* Mayer. American Journal Medical Sciences. Vol. CXXIII. 1902. 

 P. 187. 



