370 MANUAL OF BACTERIOLOGY. 



chiefly under the name of streptothrix. In man they have been found in a 

 variety of suppurative and necrotic lesions, in particular, bronchopneumonias.* 



Bacillus Typhosus (Bacillus of Eberth). A bacillus with 

 rounded ends, varying in length, sometimes making very short, 

 oval forms, sometimes growing out into long threads. It is 

 very actively motile, and possesses numerous flagella which 

 arise from all parts of the surface. It does not form spores. 

 It is not stained by Gram's method, but it may be colored with 



FIG. 95. Bacillus of typhoid fever. (X 1000.) 



the ordinary aniline dyes, when the stain will frequently be 

 somewhat irregular. It may be stained in sections of tissues 

 from cases of typhoid fever, with the aniline dyes, such as 

 Loffler's alkaline methylene-blue. It is a facultative anaerobe. 

 It grows at ordinary temperatures, better in the incubator, but 

 grows rather more slowly than B. coli communis. Gelatin is 

 not liquefied. Young surface colonies in gelatin appear 



*Norris and Larkin. Journal Experimental Medicine. Vol. V., p. 155. 

 Musser. Philadelphia Medical Journal. September 7, 1901. Flexner. 

 Journal Experimental Medicine. Vol. III. MacCallum. Centralblatt jur 

 Bakteriologie. Orginal. Bd. XXXI. 1902. 



