INDEX 625 



Thermophilic bacteria, Studies on, I. Aerobic thermophilic bacteria from 

 water 343 



Thiobacillus thiooxidans, a new sulfur-oxidizing organism isolated from the 

 soil. Microorganisms concerned in the oxidation of sulfur in the soil, II. 239 



, A solid medium for the isolation and cultivation of. Microorgan- 

 isms concerned in the oxidation of sulfur in the soil, IV 605 



Transparent milk as a bacteriological medium 511 



Use, The, of agar slants in detecting ammonia production and its relation 



to the reduction of nitrates 515 



, The, of domestic methylene blue in staining milk by the Breed method . . 307 



Vacuum, Influence of, upon growth of some anaerobic spore-bearing bacteria. 283 

 Velocity of growth, Salt effects in relation to the lag period and, Salt effects 



in bacterial gjrowth, III 583 



Viability of Bad. coli and Bad. typhosum in water, The effects of temperat- 

 ure and hydrogen ion concentration upon the. Disinfection studies.. 183 



of the colon-typhoid group in carbonated water and carbonated 



beverages Ill 



Viable bacteria, The proportion of, in young cultures with especial refer- 

 ence to the technique employed in counting 405 



Vitamines, The relation of, to the growth of a streptococcus 449 



Waksman, Selman A. A method for counting the nvunbcr of fungi in the 

 soil 339 



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

 troductory ^ 231 



. . IV. A solid medium 



for the isolation and cultivation of Thiobacillus thiooxidans 605 



. . V. Bacteria oxidiz- 

 ing sulfur under acid and alkaline conditions 609 



and Joffe, J. S. Microorganisms concerned in the oxidation of sulfur 



in the soil. II. Thiobacillus thiooxidans, a new sulfur-oxidizing organ- 

 ism isolated from the soil 239 



Wall, W. A. and Hucker, G. J. The use of agar slants in detecting ammonia 



production and its relation to the reduction of nitrates 515 



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



milk by the Breed method 307 



Wallin, Ivan E. A note on the morphology of bacteria symbiotic in the 



tissues of higher organisms 471 



Water, Aerobic thermophilic bacteria from. Studies on thermophilic 



bacteria, 1 343 



, carbonated, and carbonated beverages, Viability of the colon-typhoid 



group in Ill 



, The effects of temperature and hydrogen ion concentration upon the 



viability of Bad. coli and Bad. typhosum in. Disinfection studies 183 



Weinzirl, John. The cause of explosion in chocolate candies 599 



