SUBJECT INDEX 



433 



Lime, influence of, on nitrification, 219 



on nitrogen fixation, 255 

 requirements of soil, Azotobacter 



as an indicator of, 254 

 Lipases, 80 

 Listerism, 26 

 Longevity of bacteria, 45 



M 



MAGNESIUM carbonate, influence of, on 



nitrification, 219 



salts, influence of, on bacteria, 143 

 Maltose, 79, 80 , 



Manganese salts, influence of, on bac- 

 teria, 143, 144 ( 



Manure, denitrifying organisms in, 240 

 green, ill effects from use of, 158 



influence of, on soil, 152, 156, 159 

 influence of, on ammonification, 153 

 on Azotobacter, 266, 267 

 on bacteria, 151-153 

 on bacterial activities, 150-159 

 on moisture of soil, 151 

 on nitrification, 153 

 on nitrogen fixation, 153, 154 

 on temperature of soil, 151 

 products of decomposition, 330 

 Mass and enzyme action, 78 

 Matzoon, 411 



Micrococcus acidi in cheese, 394 

 albicans amplus, 361 

 candicans in beef, 394 

 candidus in baked beans, 394 

 casei in sewage, 361 

 cereus in beans, 394 

 fervidosus amplus in sewage, 361 

 flavus liquefaciens in putrefaction, 



190 

 gonorrhese nitrogen requirements, 68 



temperature relationship of, 98 

 lactis in cheese, 394 

 luteus in corn, 394 

 meningitidis, vitamine requirements 



of, 70 



pyogenes in corn, 394 

 stellatus in beef, 394 

 tetragenus mobilis ventriculi, 361 

 ureae, 81 

 Micron, 39 



Microorganisms, kinds of, in soil, 164 

 Microspira sestuarii, action of, on sul- 

 phates, 179 



desulphuricans, action of, on sul- 

 phates, 179 



Mills Reincke phenomenon, 353 

 Milk, abnormal changes in, 376 

 acid-forming bacteria in, 376, 377 

 bacteria in, 372 

 bacteriology of, 368-377 

 bitter, 376 

 certified, 371 

 28 



Milk, changes produced in, by bacteria, 

 375-376 



classes of, 371 

 of bacteria in, 376, 377 



common, 371 



composition of, 368 



disease and, 378-386 



factors influencing number of bac- 

 teria in, 372, 373 



as food, 368, 369, 370 



growth of bacteria in, 374, 375 



influence of, on intestinal microflora, 

 371 



pasteurization of, 385, 386 



pathogenic bacteria in, 377, 378 



peptonizing bacteria in, ^77 



quantity consumed, 368 



sources of infection in, 378, 379 



tubercle bacilli in, 382 



tuberculosis due to, 381 

 Milk-borne disease, character of, 379. 



380 



extent of, 380, 381 

 Mineralization of soil constituents, 



171-180 

 Moisture in bacteria, 58, 65 



function of, in organism, 66 



influence of manure on soil, 151 



requirements of nitrifiers, 226-230 

 Molds, acid produced by, 87 



as denitrifiers, 241 



difference of, from bacteria, 30 



in eggs, 393 

 Morphology of Azotobacter, 271 



of bacteria, 37-45 



of cellulose ferments, 331 



of clostridium pasteurianum, 271 



of mtrifiers, 225, 226 

 Motility, organs of, 42 

 Mustard, as green manure, 157 



N 



NITRATE accumulations, relationship 



of, to Azotobacter, 284 

 influence on loss from soil, 247 

 losses of, from soil, 236, 237 



prevention of, 238 

 quantities formed in soil, 153, 158, 



235 236 



used by legumes, 323, 324 

 Nitrification, 28, 34, 208, 238 

 of calcium cyanamid, 221 

 chemistry of process, 223, 224 

 discovery of organisms concerned, 



209, 210 

 early knowledge of, 208 



theories of, 208, 209 

 energy transformations in, 223 

 influence of aeration, 230, 231 



of antiseptics on, 134 



of arsenic on, 119 



