602 INDEX 



Inhibition, Bacterial. I. Germicidal action in milk 527 



Ishii, O. The fate of bacteria of the colon-typhoid group on carbohydrate 

 media 437 



Joffe, Jacob S., and Waksman, Selman A. Studies in the metabolism of 



actinomycetes 31 



Jones, Dan H. Further studies on the growth cycle of azotobacter 325 



Kligler, I. J., Conn, H. J., Chairman, Harding, H. A., Frost, W. D., Prucha, 

 M. J., and Atkins, K. N. Report of the Committee on the Descriptive 

 Chart for 1919 127 



1 f . Report of Committee on Descriptive Chart. Part II. 



Report of progress during 1919 315 



Krumwiede, Charles, Jr., Winslow, C.-E. A., Chairman, Broadhurst, Jean, 

 Buchanan, R. E., Rogers, L. A., and Smith, G. H. The families and 

 genera of the bacteria. Final report of the Committee of the Society 

 of American Bacteriologists on Characterization and Classification of 

 Bacterial Types 191 



Loeffler's flagella stain, A modification of 181 



Meacham, M. R., Brightman, Charles L., and Acree, S. F. A spectrophoto- 

 metric study of the "salt effects" of phosphates upon the color of 



phenolsulfonphthalein salts and some biological applications 169 



, Hopfield, J. H., and Acree, S. F. A method of determining the rela- 

 tive toxicity of sodium, potassium, lithium, and other ions toward 



Endothia parasitica: Data on sodium chloride 309 



} , . 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 



, 1 . The relative effect of phosphate-acetate and of phosphate- 



phthalate buffer mixtures upon the growth of Endothia parasitica on 



malt extract and corn meal media 305 



Medalia, Leon S. "Color standards" for the colorimetric measurement of 



H-ion concentration of pH 1.2 to pH 9.8 441 



Meta-colon-bacillus, A. On the bacillus of Morgan No. 1 67 



Metabolism, Studies in the, of Actinomycetes. III. Nitrogen metabolism. 1 

 , , . IV. Changes in reaction as a result of the growth of actino- 

 mycetes upon culture media 31 



Method A., of determining the relative toxicity of sodium, potassium, lith- 

 ium, and other ions toward Endothia parasitica: Data on sodium chloride 309 



Milk, 1. Germicidal action in. Bacterial inhibition 527 



-powder agar for the determination of bacteria in milk 565 



, Milk-powder agar for the determination of bacteria in 565 



Modification, A, of Loeffler's flagella stain 181 



Modified, A, procedure for the preparation of testicular infusion agar 99 



Morgan No. 1. On the bacillus of, — a meta-colon-bacillus 67 



