726 INDEX 



American Bacteriologists, Society of. Abstracts of papers presented at sev- 

 enteenth annual meeting 81 



Systematic bacteriology. 



Characteristics of bacteria of the colon type occurring in human feces, 



The. L. A. Rogers, Wm. Mansfield and H. A. Lubs 82 



Chromogenic bacillus, The. Frank L. Rector 86 



Correlation of the Voges-Proskauer and the methyl red reaction, On the. 



Max Levine 87 



Hemolytic streptococci found in milk, The. Their significance and 



their relation to streptococci of human origin. David John Davis. . 83 

 Hydrogen-ion concentrations in cultures of streptococci. S. Henry 



Ayers 84 



Some problems in bacterial nomenclature. R. E. Buchanan 82 



Studies on the classification of the colon-typhoid group. C.-E. A. 



Winslow and I. J. Kligler 81 



Type of colon bacillus occurring in surface waters, The. L.A.Rogers. 82 

 Value of lactose bile for the B. coli presumptive test, The. John W. M. 



Bunker 85 



Technique. 



Acidity of media. H. A. Noyes 87 



Amniotic fluid as a bacterial culture medium. Ward Giltner and L. C. 



Ludlum 91 



Another use of the double plate method. W. D. Frost and Freda M. 



Bachmann 92 



Culture medium for maintaining stock cultures of the meningococcus, A. 



C. G. A. Roos 88 



Modification in staining technic. Zae Northrup 91 



Pasteurization applied to mold spores. Charles Thorn and S. H. Ayers. 89 



Simple apparatus for isolating anaerobes. Zae Northrup 90 



Study of effect of dilution water on bacterial suspensions. H. M. 



Weeter 92 



Use of 0.01 cubic centimeter pipettes in bacterial milk analj'sis, The. 



James D. Brew 89 



Variation in plant counts under research conditions. M. J. Prucha 92 



Industrial bacteriology. 

 Are spore-forming bacteria of any significance in soil under normal 



conditions. H. Joel Conn 95 



Bacteria, actinomyces and fungi in soils. Selman A. Waksman 101 



Coli-like organisms of the soil. B. R. Johnson 96 



Ferrification in soils. P. E. Brown and G. E. Corson 95 



Indirect effect of certain soil treatments upon bacterial activity, The. 



P. L. Gainey 98 



Influence of soil solution on the longevity of microorganisms subjected 



to desiccation. The. Ward Giltner and Virginia Langworthy 96 



Media for soil bacteria. H. A. Noyes 93 



Possible function of actinomycetes in soil, A. H. Joel Conn 93 



Quantitative media for the estimation of bacteria in soil. R. C. Cook. . 100 



