580 Bacilli Resembling the Typhoid Bacillus 



offering strong resistance to the disease process. Abscess 

 of the liver is also rare in epidemic, though common in 

 amebic dysentery. 



PSEUDO-DYSENTERY BACILLUS. 



Kruse* has observed in dysenteric diseases of the insane 

 a new (?) bacillus which he has called the pseudo- dysentery 

 bacillus. The morphologic and cultural differences be- 

 tween it and B. dysenterise are slight, but the agglutina- 

 tion reactions are quite different and form the ground for 

 separation. 



BACILLUS F^CALIS ALKALIGENES (PETRUSCHKY). 



General Characteristics. A motile, flagellated, non-sporogenous, 

 non-liquefying, non-chromogenic, non-aerogenic, aerobic and option- 

 ally anaerobic, non-pathogenic bacillus of the intestine, staining by 

 ordinary methods, but not by Gram's method. 



This bacillus has occasionally been isolated by Pe- 

 truschky f and others from feces. It closely resembles 

 the typhoid bacillus, being short, stout, with round ends, 

 forming no spores, staining with the usual dyes, but not by 

 Gram's method, being actively motile, and having numerous 

 flagella. It does not liquefy gelatin, does not coagulate 

 milk, produce gas, or 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 generates a strong 

 alkali when grown in litmus-whey. Its cultures are not 

 agglutinated by the typhoid serums. 



BACILLUS PSITTACOSIS (NOCARD). 



General Characteristics. A motile, flagellated, non-sporogenous, 

 aerobic, optionally anaerobic, non-chromogenic, aerogenic, pathogenic, 

 non-liquefying bacillus, staining by the ordinary methods, but not 

 by Gram's method. 



This micro-organism was discovered by Nocard, { who first 

 observed it in 1 892 in certain cases of psittacosis, or epidemic 

 pneumonia traceable to infection from diseased parrots. The 



* "Deutsche med. Wochenschrift," 1901, Nos. 23 and 24. 

 f "Centralbl. f. Bakt. u. Parasitenk.," xix, 187. 

 { Seance du Conseil d'hygiene publique et Salubrite du Departe- 

 ment de la Seine, March 24, 1893. 



