JOURNAL OF BACTERIOLOGY 



OFPICIAL ORGAN OF THE SOCIETY OF AMERICAN BACTERIOLOGISTS 



DEVOTED TO THE ADVANCEMENT AND DIS- 

 SEMINATION OF KNOWLEDGE IN nEGAKD TO 

 THE BACTERIA AND OTHER MICRO-ORGANISMS 



Editorial Board 



EditOT-in-Chie) 



C.-E. A. WINSLOW 



Yale Medical School, New Haven, Conn. 



A. Pabker IIitchens Lore A. Rogers, IOx officio 



Advisory Editors 



C. C. Bass F. P. Gorham C. E. Marshall M. J. Rosenatj 



R. E. Bdchanan F (":. llAiiRisoN V. A. Moorb A. W. Williams 



P. F. Clark E. O. Jordan L. F. Rettger IT. Zinsser 



F. P. Gay C. B. Lipman L. A. Rooers 



CONTENTS 



L. D. BuSHNELL. Quantitative Determinations of Some of the Biochemical Changes 



Produceci by a Saprophytic Anaerobe 373 



G. S. Wilson. The Proportion of \iablc Bacteria in Young Cultures with Especial 

 Reference to the Technique Employed in Counting 40.5 



H. J. Co.VN. A Method of Detecting Rennet Production by Bacteria 447 



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 IV. Price per set, net, postpaid, $24.00, 

 United States, Mexico, Cuba ; S2.5.00, Canada; $2').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. 



