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 Hitchens 



Editor-in-Chiej 

 C.-E. A. WINSLOW 



Yale Medical School, New Haven, Conn. 



Dr. Charles Krtjmwiede, 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. LiPMAN 



C. E. Marshall 



V. A. Moore 

 M. E.Penington 

 F. B. Phelps 

 L. F. Rettger 

 L. A. Rogers 



M. J. Rosenaxj 

 W. T. Sedgwick 

 F. L. Stevens 

 A. W. Williams 

 H. Zinsser 



CONTENTS 



H. J. Conn, Chairman, K. N. Atkins, I. J. Kligler, J. F. Norton, and G. E. 



Harmon. Progress Report for 1920 Committee on Bacteriological Technic 135 



Laurence F. Foster and Samuel B. Randall. A Study of the Variations in Hydro- 

 gen-Ion Concentration of Broth Media 143 



Laurence F. Foster. The Relation of Hydrogen-Ion Concentration to the Growth, 



Viability, and Fermentative Activity of Streptococcus hemolyticus 161 



Laurence F. Foster. The Biochemistry of Streptococcus hemolyticus 211 



Ivan V. Shunk. Notes on the Flagellation of the Nodule Bacteria of Leguminosae 239 



George B. Roth. Method for the Intravenous Injection of Guinea-Pigs 249 



H. J. Conn. Rose Bengal as a General Bacterial Stain " 253 



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

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

 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; $18.75, Canada; $19.50, other countries. Subscriptions are in 

 order for Volume IV, 1920. Price, per volume, $5.00, United States, Mexico, Cuba; $5.25, 

 Canada; $5.50, other countries. 



