EDWIN O. JORDAN 451 



Bulletin (1923-27). Sometimes, however — as in the case of the white staphylococcus 

 cited above — a hitherto undescribed toxigenic microbe is assigned a definitely etio- 

 logical role. Levin/ for example, attributed six cases of cheese poisoning in Michigan 

 to a toxigenic bacillus of the colon group. No one can review the published reports of 

 "food poisoning" outbreaks, or indeed recall his own experience, without being con- 

 vinced of our almost complete ignorance of the factors concerned in the production of 

 many epidemics and scattered cases. 



' Levin, W.: /. Lab. & Clin. Med., 2, 761. 1916-17. 



