BACILLI OF THE COLON-TYPHOID-DYSENTERY GROUP 705 



"Y," "Diamond," and "Ferra" there was usually delayed acid fermentation of 

 maltose, never any of dextrin. 



In studying the agglutinative characters of these groups, furthermore, it 

 was found that fermentation tests and agglutinations went hand in hand. 

 The following table will illustrate the point; 16 



SERUM OF RABBIT IMMUNIZED AGAINST GROUP I. (Shiga's culture). 



Bacilli of Group I.: 



"Shiga " (homologous) 20,000 



"Kruse" 20,000 



"New Haven" 20,000 



Bacilli of Group II.: 



"Y" 200 



" Ferra " 200 



"Seal Harbor" 200 



Bacilli of Group IV.: 



" Baltimore " 800 



"Harris" 800 



"Gray" ' 800 



" Wollstein" 800 



SERUM OF RABBIT IMMUNIZED AGAINST GROUP II. ("Y" culture, 

 Hiss and Russell). 



Bacilli of Group I.: 



"Shiga" lessthan 100 



"Kruse" 100 



"New Haven" 100 



Bacilli of Group II.: 



"Y" (homologous) 6,400 



"Ferra" 6,400 



"Seal Harbor 6,400 



Bacilli of Group IV.: 



"Baltimore" 1,600 



"Gray" 1,600 



"Harris" 1,600 



"Wollstein" 1,600 



SERUM OF RABBIT IMMUNIZED AGAINST GROUP IV. ("Baltimore" 

 culture). 



16 Hiss, Jour, of Med. Research, 13, N. S.. viii, 1904. 



