INDEX TO VOLUME VI 



Anaerobes, On the growth and the proteolytic enzymes of certain 419 



, Pathogenic, Studies in, II. Principles concerning the isolation of 



anaerobes 445 



, Pathogenic, Studies in, IV. Suggestions concerning a rational basis for 



the classification of the anaerobic bacteria 521 



, Principles concerning the isolation of. Studies in pathogenic anaer- 

 obes II - 445 



Anaerobic bacteria, Suggestions concerning a rational basis for the classifi- 

 cation of the. Studies in pathogenic anaerobes IV 521 



Anaerobiosis, Chemical criteria of, with special reference to methylene blue 1 

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

 Harmon, G. E. Progress report for 1920 committee on bacteriological 



technic 135 



Azotobacter chroococcum Beij, Studies on 331 



Bacilli, typhoid, Variations in 275 



Bacillus megatherium. The antigens of Cory neb acterium diphtheriae and, 



and their relation to toxin. The nature of toxin 103 



Bad. dysenteriae, group III, Toxins of 501 



Bacteria, anaerobic. Suggestions concerning a rational basis for the classifi- 

 cation of the. Studies in pathogenic anaerobes IV 521 



, Chart of the families and genera of the 575 



concerned in the ripening of corn silage 45 



, The importance of preserving the original types of newly described 



species of 133 



, Indol production by 471 



, nodule, of Leguminosae, Notes on the flagellation of the 239 



Bacterial cultures. Spiral bodies in 371 



growth. Salt effects in. I. Preliminary paper 511 



system, The main lines of the natural 263 



Bacteriological media. Hydrogen ions, titration and the buffer index of . . . . 555 



Bacteriological technic. Progress report for 1920 committee on 135 



Barthel, Chr. Note on the indol test in tryptophane solution 85 



Biochemistry, The, of Streptococc^lfi hcmolyiicus 211 



Blanc, J., and Dernby, K. G. On the growth and the proteolytic enzymes of 



certain anaerobes 419 



Bonazzi, Augusto. On Nitrification. IV. The carbon and nitrogen rela- 

 tions of the nitrite ferment 479 



. Studies on Azotobacter Chroococcum Beij 331 



Botulism in cattle > 69 



Broth media, A study of the variations in hydrogen-ion concentration of. . 143 



577 



