INDEX TO VOLUME VII 



Aerobic spore-bearing bacteria, Influence of vacuum upon growth of some. . 283 



thermophilic bacteria from water. Studies on thermophilic bacteria, I, 343- 



Agar slants. The use of, in detecting ammonia production and its relation 



to the reduction of nitrates 515 



Agglutination, spontaneous, A study of, in the colon-typhoid group of 



bacilli 71 



, Studies upon, in the colon-typhoid group of bacilli 39 



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

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



growth 583 



American gentian violets. An investigation of. Report of committee on 



bacteriological technic 52& 



stains, An investigation of. Report of committee on bacteriological 



technic 127 



Ammonia production and its relation to the reduction ot nitrates, The use 



of agar slants in detecting 515 



Anaerobe, saprophytic. Quantitative determination of some of the bio- 

 chemical changes produced by a 373 



Anaerobes, A method for the cultivation of 277 



, pathogenic, Studies in, V. Certain genera of the clostridiaceae 1 



Apparatus, An, for the rapid measurement of surface tension 367 



Autolysis, Bacterial 551 



Ayers, S. Henry and Mudge, Courtland S. The relation of vitamines to the 

 growth of a streptococcus , 449 



B. pulrificus Bienstock, Clostridium putrificum, a distinct species 505 



Bacilli, A study of spontaneous agglutination in the colon-typhoid group of 71 



Bacilli, Studies upon agglutination in the colon-typhoid group of 39 



Bacillus hemoglobinophilus cams (Friedbergcr) {Hemophilus canis emend).. 579 

 Bad. coli, The effects of temperature and hydrogen ion concentration upon 



the viability of, and Bad. ti/phosum in water. Disinfection studies 183 



, The growth of, in relation to H-ion concentration. Salt effects in 



bacterial growth, II 465. 



Bad. lyphosum in water. The effects of temperature and hydrogen ion 



concentration upon the viability of Bad. coli and. Disinfection studies 183 



Bacteria, A binocular microscope arranged for the study of colonies of 121 



, Influence of vacuum upon growth of some spore-bearing 283 



, Lactic acid, Studies on the biology of, a summary of personal investi- 

 gations 271 



, Method for the isolation of, in pure culture from single cells and pro- 

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



617 



