428 



SUBJECT INDEX 



Bacillus mesentericus, survive pasteur- 

 ization, 392 



vulgatus, 106 



in sewage, 361 

 methanicus, 334 

 monadiformis in sewage, 361 

 mucosus in eggs, 393 

 mycoides, 166, 167 



action on cyanamid, 221 

 on phosphates, 174 



ammonia produced by, 194-196 



cultural characteristics of, 167 



denitrifier, 241, 242 



morphology of, 166 



optimum conditions for, 195 



physiology of, 167 



in soil, 165 



nibilus in sewage, 361 

 nitrator, 225 



nitrovorum, denitrifier, 241 

 ochracens in water, 346 

 orthobutylicus, formation of butyric 



acid by, 411 



pammellii in cheese, 394 

 paratyphosus, in food, 397 



in milk, 377 



perfringens in putrefaction, 190 

 pestis, influence of salt on, 408 

 phosphore?cens, influence of temper- 

 ature on, 96, 98 

 pneumonic, nitrogen fixer, 251 

 prodigiosus, denitrifier, 241, 243 



in milk, 376 



nitrogen fixer, 251 



pigment produced by, 93 



in water, 346 



proteus, indol and skatol formation 

 by, 89 



in putrefaction, 190 



vulgaris, action on phosphates, 174 

 ammonia-producing, 196 

 denitrifier, 241 



in water, 346 



zenkeri, as denitrifier, 241 



in sewage, 361 



pseudodiphtnerise, influence of press- 

 ure on, 107 



punctatus in water, 346 

 putidum, action on cyanamid, 221 

 putidus in putrefaction, 190 

 putrificus in putrefaction, 190 

 pyocyaneus, carbon requirements of, 

 242 



denitrifier, 241 



pigment produced by, 93 

 radicicola (See Ps. radicicola) 



nitrogen fixer, 251 

 ramosus, ammonia-producing, 196 



in eggs, 393 



non-liquefaciens, as 'denitrifier, 241 

 rubcfaciens in water, 346 

 rubcr in water, 346 

 rubescens in water, 346 



Bacillus simplex in soil, 165 

 sporogenes in sewage, 361 

 stillatus in sewage, 361 

 stutzrri, as denitrifier, 241 

 subtilis, action on cyanamid, 221 

 on phosphates, 174 



in corn, 394 



as denitrifier, 241, 243 



physiological solution for, 142 



in soil, 165 



survives pasteurization, 392 



temperature relationship of, 98 



in water, 346 

 tenus in cheese, 394 

 tetani, acid produced by, 86 

 thermophilis, temperature relations 



of, 96, 98 



tumescens, ammonia-producing, 196 

 typhosus, acid produced by, 85 



action of copper on, 123 



in cheese, 390 



in cream, 391 



as denitrifier, 241 



in ice, 350 



influence of freezing on, 100 

 of salt on, 408 



longevity of, in butter, 387 



in milk, 377 



in sewage, 364 



in water, 344 

 vilatis in spinach, 394 

 violaceus, pigment production by, 93 



in water, 346 

 viscosus in cheese, 394 

 vulgaris, action on cyanamid, 221 



ammonia-producing, 196 



in putrefaction, 190 

 vulgatus, ammonia-producing, 196 



in corn, 394 



weichselbaumii in sewage, 361 

 welchii in corn, 394 

 zopfi lepsiense, action of, on cyana- 

 mid, 221 



in putrefaction, 190 

 Bacteria, acid production by, 84 

 action of drying on, 105 



on fats, 87 



on hippuric acid, 92 



on minerals, 92 



on proteins, 87, 88, 89 



on sulphur, 175, 178 



on urea, 91 



on uric acid, 91 

 in air, 336-339 



expired, 339 



inspired, 339 



methods of entering, 336 



number and kind of, 336, 337 

 amins, formation of, 90 

 in arts and industries, 411, 416 

 autotrophic, 67 

 in body, 31 32 

 in bread, 392 



