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 



Editor-in-Chief 

 C.-E. A. WINSLOW 



Yale Medical School, New Haven, Conn. 



A. Parker Hitchens 



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. Rosenah 

 W. T. Sedgwick 

 F. L. Stevens 

 A. W. Williams 

 H. Zinsser 



CONTENTS 



O. Ishii. The Fate of Bacteria of the Colon-Typhoid Group on Carbohydrate Media. . 437 



Leon S. Medalia. "Color Standards" for the Colorimetric Measurement of H-Ion 

 Concentration pH 1.2 to pH 9.8 441 



C. P. Fitch and W. A. Billings. A Study of the Action of Eight Strains of Bad. 



Abortivo-Equinus on Certain of the Carbohydrates 469 



Lewis Davis. Bacteriologic Peptone in Relation to the Production of Diphtheria 



Toxin and Antitoxin 477 



R. S. Breed and H. J. Conn. The Nomenclature of the Actinomycetaceae (Addenda). 489 



M. R. Meacham, J. H. Hopfield and S. F. Acree. Preliminary Note on the Use of 

 Some Mixed Buffer Materials for Regulating the Hydrogen Ion Concentrations of 

 Culture Media and of Standard Buffer Solutions 491 



Th. Thj0tta and Odd Kinck Eide. A Mutating, Mucoid Paratyphoidbacillus Iso- 

 lated from the Urine of a Carrier 501 



J. H. Richards. Bacteriologic Studies in Chronic Arthritis and Chorea 511 



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. 



