JOURNAL OF BACTERIOLOGY 



Contents 



NOVEMBER, 1921— VOL. VI— No. 6 



George E. Holm and James M. Seierman. Salt Effects in Bacterial Growth. 

 I. Preliminary Paper. 



Hilda Hempl Hbllrr. SiipKCstions ConccrninR .1 Rational Basis for the Classi- 

 fication of the Anaerobic Becteris. Studies in Pathogenic Anaerobes. IV. 

 I. Prelimin.ary Paper. 



J. Howard Brown. Hydrogen Ions, Titr.ition and the Buffer Index of Bacterio- 

 logical .Media. 



J. E. Rcan and G. A. Palmbr. On Decreasing the Exposure Necessary for the 

 Gelatin Determination. 



n.\ni->i.r> Macv. Chart of the Families .and Genera of the Bacteria. 



SEPTEMBER, 1921— VOL. VI— No. 5 



G. P. Plaisance and B. W. Hammer. The Mannitol-Producing Organisms in 



Sil.ige. 

 Hilda Hempl Heller. Principles Concerning the Isolation of Anaerobes. Studies 



in Pathogenic Anaerobes. II. 

 John F. Xoutox and Mary V. Sawyer. Indol Production by Bacteria. 

 Anou.sTo BoxAzzi. On Nitrification. IV. The Carbon and Nitrogen Relations 



of the Nitrite Ferment. 

 Th. Thjotta AND Odd F.\l8en Sundt. Toxins of Bact. Dysenterias, Group III. 



JULY, 1921— VOL. VI— No. 4 



Laura Florence. Spiral Bodies in Bacterial Cultures. 



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



or Swiss Cheese. 

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

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



Concentration. 

 Harriet Leslie Wilcox. The Effect of Pepton upon the Production of Tetanus 



Toxin. 

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



Certain .\naerobes. 



MAY, 1921— VOL. VI— No. 3 



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



Kan-Icuiro Morishima. Variations in Typhoid Bacilli. 



Frederick A. Wolf and I. V. Siiunk. Solid Culture Media with a Wide Range of 



Hydrogen or Hydroxyl Ion Concentration. 

 AuousTO Bonazzi. Studies on Azotobacter Chroococum Beji. 



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