226 



WHITMORE. 

 Table X. 



Culture. 



Is agglutinated in rabbit serum L. I in a 

 dilution of — 





d 



x-l 



d 



1 



r-t 



O 

 1-H 



i 



8 



o 



s 



o 



00 



8 



rH 



P. S. I -. _ _ 



_ 



+ 

 ± 

 4: 



+ 

 ± 



+ 

 + 

























P. S. II .. . 



























S. S. I 



























S. S. II . 



























P. A. I 



± 

 + 

























P. A. II. ... .. . 

























S. A. I . 

























S. A. II 



+ 























L. I .. -.- 



-|- 



+ 



+ 



+ 



+ 



+ 



+ 



+ 



± 



— 



L. II 



L. Ill 

























L. IV 



— 

























L. V 

























L. VI 



— 

















































From the foregoing tables it is evident that the first four strains are 

 identical; also that the next four are identical among themselves, but 

 are entirely different from the first four. Two of the first four strains 

 (S. S. I and S. S. II) are known to be of the Shiga-Kruse variety, 

 while two of the next four (S. A. I and S. A. II) are Flexner strains. 



I was interested in finding that non-dysentery strains L. Y and L. 

 VI were both agglutinated in a dilution above 1 : 1,000 of serum 

 L. V and serum L. VI. On checking them, I found that L. V and L. 

 VI both came from the same patient and that, owing to an error in 

 the spelling of the name, two stools from the same patient had been 

 examined as coming from different ones. 



SUMMARY. 



1. In an epidemic of bacillary dysentery with a high death rate in 

 Luzon, Province of Batangas, P. I., it has been shown that the Shiga- 

 Kruse type of dysentery bacillus was the causative agent. 



2. At the same time, the Flexner- Strong type of dysentery bacillus was 

 found in some cases of d3'sentery around Manila. 



3. The Bacillus Y and the Strong type with which Leutz worked were 

 not found. 



4. Great care is necessary in describing types of the dysentery bacillus 

 from their reactions in sugar media alone, as the amount of sugar present 

 and the length of time the organism has been on artificial media often 

 affect the reaction. 



