BACILLI RESEMBLING TYPHOID BACILLUS. 517 



Bacillus F^calis Alcaligenks ( Petruschky 1 ) . 



This bacillus lias been occasionally isolated from feces 

 by Petruschky and others. It closely resembles the 

 typhoid bacillus, being short and stout, with round 

 ends ; forming spores ; staining with the usual dyes, but 

 not by Gram's method, being actively motile, and hav- 

 ing numerous flagella. It grows similarly upon gelatin, 

 which it does not liquefy. It does not coagulate milk, 

 produce gas, nor form indol. Its pathogenic powers are 

 similar to those of the typhoid bacillus. 



It grows more luxuriantly than the typhoid bacillus 

 upon potato, producing a brown color, and produces a 

 strong alkali when grown in litmus-whey. Its cultures 

 are not agglutinated by the typhoid serums. 



1 Centralbl. fur Bakt. und Parasiienk., xix., 187. 



