INDEX 623 



Quantitative determination of some of the biochemical changes produced by 

 a saprophytic anaerobe 373 



Rapid measurement of surface tension, An apparatus for the 367 



Reddish, George F. and Rettger, Leo F. Clostridium piUrificum (B. putri- 



ficus Bienstock), a distinct species 605 



Reduction of nitrates, The use of agar slants in detecting ammonia pro- 

 duction and its relation to the S15 



Reed, Guilford B. A binocular microscope arranged for the study of col- 

 onies of bacteria 121 



Relation, The, of vitamines to the growth of a streptococcus 449 



Rennet production, A method of detecting, by bacteria 447 



Report of committee on bacteriological technic. An investigation of Ameri- 

 can gentian violets 529 



. An investigation of American stains 127 



. Method of pure culture study 519 



Rettger, Leo F. and Reddish, George F. Clostridium putrificum (B. jnUri- 



ficus Bienstock), a distinct species 505 



and Sturges, William S. Bacterial autolysis 551 



Rivers, T. M. Bacillus hemoglobinophiltis canis (Friedberger) (Hemophilus 



canis emend) 579 



Robertson, A. H. and Wall, W. A. The use of domestic methylene blue in 



staining milk by the Breed method 30T 



Salmon, The sources and characteristics of the bacteria in decomposing. ... 85 



Salt effects in bacterial growth. IL The growth of Bad. colt in relation to 

 Il-ion concentration 4C5 



. in. Salt effects in relation to the lag period and 



velocity of growth 583 



Salt effects in relation to the lag period and velocity of growth. Salt effects 

 in bacterial growth. III 583 



Saprophytic anaerobe. Quantitative determination of some of the bio- 

 chemical changes produced by a 373 



Sauerkraut, pink, The production of, by yeasts 257 



Sherman, James M. and Holm, George E. Salt effects in bacterial growth. 



II. The growth of Bad. c.oli in relation to H-ion concentration 465 



Sherman, J. M., Holm, G. E. and Albus, W. R. Salt effects in bacterial 

 growth. III. Salt effects in relation to the lag period and velocity of 

 growth 583 



Single cells, Method for the isolation of bacteria in pure culture from, and 

 procedure for the direct tracing of bacterial growth on a solid medium. . 537 



Skinner, W. W. and Koser, S. A. Viability of the colon-typhoid group in 

 carbonated water and carbonated beverages Ill 



Society, Our 149 



Soil, A method for counting the number of fungi in the 339 



, sulfur in the. Microorganisms concerned in the oxidation of. I. In- 

 troductory 231 



, , . II. Thiobacillus Ihio- 



oxidans, a new sulfur-oxidizing organism isolated from the soil 239 



