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 



EditOT'in-Chief 

 C.-E. A. WINSLOW 



Yale Medical School, New Haven, Conn. 



A. Parker Kitchens 



F. C. Harrison, Ex oflBcio 



Principal, MacDonald College, 



P. Q., Canada 



C. C. Bass 

 R. E. Buchanan 

 P. F. Clark 

 F. P. Gay 



F. P. GORHAM 



F. 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. Rosenau 

 W. T. Sedgwick 

 F. L. Stevens 

 A. W. Williams 

 H. Zinsser 



CONTENTS 



Laura Florence. Spiral Bodies in Bacterial Cultures 371 



James M. Sherman. The Cause of Eyes and Characteristic Flavor in Emmental or 



Swiss Cheese 379 



G. J. HucKER. A New Modification and Application of the Gram Stain 395 



Louis J. Gillespie. Color Standards for the Colorimetric Measurement of H-Ion 



Concentration 399 



Harriet Leslie Wilcox. The Effect of Pe|)ton upon the Production of Tetanus 



Toxin 407 



K. G. Dernby and J. Blanc. On the Growth and the Proteolytic Enzymes of 



Certain Anaerobes 419 



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

 Abstracts of Bacteriology, published 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, III and 1\ . Price per set, net, postpaid, $24.00. 

 United States, Mexico, Cuba ; .S25.00, Canada; $2f3.00, other countries. Subscriptions are in 

 order for Volume V, 1921. Price, per volume, $5.00, United States, Mexico, Cuba; $5.25, 

 Canada; $5.50, other countries. 



