CONTENTS V 



Note on Cross-Agglutination of B. coli communis and B. dysenteriae Shiga. 

 I. J. Kligler 441 



Comments on the Evolution and Classification of Bacteria. R. S. Breed, 



H. J. Conn and J. C. Baker 445 



Studies in the Nomenclature and Classification of the Bacteria. IX. The 

 Subgroups and Genera of the Thiobacteriales 461 



Studies on Proteolytic Activities of Soil Microorganisms with Special Ref- 

 erence to Fungi. Selman A. Waksman 475 



A Modification of the Technique of the Voges and Proskauer Reaction. 



Geo. C. Bunker, Edward J. Tucker and Howard W. Green 493 



Number 6, November, 1918 



Ozena and Distemper: Comparative Study of Coccobacilhis foetidus-ozaene 



and Bacillus bronchisepticus. N. S. Ferry and Arlyle Noble 499 



Studies on the Proteolytic Enzymes of Soil Fungi and Actinomyces. Sel- 

 man A. Waksman 509 



Some Observations on the Efficiency of the Present Standard Agar for the 

 Estimation of Bacteria in Milk. H. J. Sears and Lulu L. Case 531 



Sterilized Measured Amounts of Water in the Autoclave. H. A. Noyes. . . . 537 



Studies in the Nomenclature and Classification of the Bacteria. X. Sub- 

 groups and Genera of the Myxobacteriales and Spirochaetales. R. E. 

 Buchanan 541 



A Note on the Nature of the Reaction of B. coli on Endo Medium. Reuben 



L. Kahn 547 



A Simplified Confirmatory Test for B. coli. Reuben L. Kahn 555 



The Differentiation of Lactose Fermenting Anaerobes from B. coli. Reuben 

 L. Kahn 561 



Index 565 



