42 



OYSTERS AND DISEASE. 



Table showing Differences of Reaction. 



Source. 



I. — B. typhosus. 



1 Institut Pasteur 



2 From spleen of Typhoid patient 



3 Prof. Delepine 



4 Prof. Wright (Netley) 



Fermentation, 

 Glucose 

 Gelatine. 



None. 



Dr. Sims Woodhead 



7 



8 I 



9 J Dr. Kanthack 



io Institute of Preventive 

 Medicine 



II.— B. coli. 



1 Institut Pasteur 



2 Prof. Deldpine ... 



3 Prof. Wright ... 

 4 

 5 



Well marked. 



6 



7 

 8 



9 

 io 

 ii 



Dr. Sims Woodhead 



; 



12 Dr. Kanthack ... 



>3 



14 Institute of Preventive 

 Medicine 



Indol 

 Reaction. 



Coagulation. 



None. 

 » 



Slight trace. 

 None. 



Marked pink. 



Slight pink. 



Pink. 

 Slight pink. 

 Marked pink. 



Pink. 



Slight pink. 

 Absent. 



None. 



Clot slowly 

 formed. 



None. 



Marked. 



Potassium 

 Iodide 

 Potato 



Gelatine. 



Very small 

 growth. 



Growth 

 abundant. 



Summary of Constancy or Variability of Reactions. 

 B. typhosus.— -(i) Fermentation test; no gas formation. (2) Indol reaction; slight 

 indication in one case. (3) Milk coagulation ; slight clot in one case. (4) Potassic 

 iodide potato gelatine ; characteristic invariably. (5) Potato ; constant with usual 

 precautions. (6) Reaction in gelatine; marked differences of rate of diffusion. 



