BACTERIOLOGICAL EXAMINATION OF MATERIAL 229 



related to the common hay bacillus or Subtilis. It is actively motile, 

 forms spores and grows with great ease on the simplest media. It 

 differs from the ordinary Subtilis bacillus in that it does not ferment 

 dextrose. Kendall 26 has shown that symbiosis of the B. Mesentericus 

 with the Colon bacillus in milk will produce a greatly increased 

 metabolism of both. 



Bacillus Putrificus of Bienstock. 27 This is a Gram-positive 

 anaerobic bacillus which forms end spores, and, therefore, mor- 

 phologically resembles the tetanus bacillus. It is identical probably 

 with Klein's bacillus cadaveris sporogenes. It is capable of produc- 

 ing powerful proteolytic cleavage in milk, cheese, etc. Bienstock 

 believes that it is present constantly in normal feces. 



88 Kendall, Boston Med. and Surg. Jour., 163, 1910. 



27 Bienstock, Archiv. f. Hyg., 36, 335, 1899, and 39, 390, 1901. 



