JOURNAL OF BACTERIOLOGY 



OFFICIAL ORGAN OF THE SOCIETY OF AMERICAN BACTERIOLOGISTS 



DEVOTED TO THE ADVANCEMENT AND DIS- 

 SEMINATION OF KNOWLEDGE IN REGARD TO 

 THE BACTERIA AND OTHER MICRO-ORGANISMS 



Editorial Board 



A. Parker Kitchens 



Edit(yr-in-Chiej 



C.-E. A. WINSLOW 



Yale Medical School, New Haven, Conn. 



Dr. Charles Krumwiede, Jr., Ex officio 



C. C. Bass 

 R. E. Buchanan 

 P. F. Clark 

 F. P. Gay 



F. P. GORHAM 



P. C. Harrison 



Advisory Editors 



H. W. Hill 

 E. O Jordan 

 A. I. Kendall 

 C. B. Ltpman 

 C. E. Marshall 



V. A. Moore 

 M. E.Penington 

 F. B. Phelps 

 L. F. Rettger 

 L. A. Rogers 



M, J. Rosenau 

 W. T. Sedgwick 

 F. L. Stevens 

 A. W. Williams 

 H. Zinsser 



CONTENTS 



William Thompson Sedgwick, 1855-1921 255 



S. Orla-Jensen. The Main Lines of the Natural Bacterial System 26.3 



Kan-Ichiro Morishima. Variations in Typhoid Bacilli 275 



Frederick A. Wolf and I. V. Shunk. Solid Culture Media with a W^ide Range of Hj'dro 



gen or Hydroxyl Ion Concentration 325 



AuGUSTO BoNAzzi Studies on Azotobacter Chroococcum Beij 331 



Abstracts of American and foreign bacteriological literature appear in, a separate journal. 

 Abstracts of Bacteriology, published bi-monthly by the Williams & Wilkins- Company, undei 

 the editorial direction of the Society of American Bacteriologists. Back volumes can be 

 furnished in sets consisting of Volumes I, II and III. Price per set, net, postpaid, $18.00, 

 United States, Mexico, Cuba;S18.75, Canada; S19.50, other countries. Subscriptions are in 

 order for Volume IV, 1920. Price, per volume, S5.00, United States, Mexico, Cuba; $5.25, 

 Canada; $5.50. other countries. 



